/usr/bin/wsrep_sst_xtrabackup-v2 is in percona-xtradb-cluster-server-5.7 5.7.20-29.24-0ubuntu2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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# Copyright (C) 2013 Percona Inc
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; see the file COPYING. If not, write to the
# Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston
# MA 02110-1301 USA.
# Documentation: http://www.percona.com/doc/percona-xtradb-cluster/manual/xtrabackup_sst.html
# Make sure to read that before proceeding!
#-------------------------------------------------------------------------------
#
# Step-1: Parse and read input params arguments. These are mainly
# related to role/username/password/etc...
#
. $(dirname $0)/wsrep_sst_common
#-------------------------------------------------------------------------------
#
# Step-2: Setup default global variable that we plan to use during processing.
#
# encryption specific variables.
ealgo=""
ekey=""
ekeyfile=""
encrypt=0
ieopts=""
xbstreameopts=""
xbstreameopts_sst=""
xbstreameopts_other=""
nproc=1
ecode=0
ssyslog=""
ssystag=""
SST_PORT=""
REMOTEIP=""
tca=""
tcert=""
tkey=""
sockopt=""
ncsockopt=""
progress=""
ttime=0
totime=0
lsn=""
ecmd=""
ecmd_other=""
rlimit=""
stagemsg="${WSREP_SST_OPT_ROLE}"
cpat=""
ib_home_dir=""
ib_log_dir=""
ib_undo_dir=""
sfmt=""
strmcmd=""
tfmt=""
tcmd=""
rebuild=0
rebuildcmd=""
payload=0
pvformat="-F '%N => Rate:%r Avg:%a Elapsed:%t %e Bytes: %b %p' "
pvopts="-f -i 10 -N $WSREP_SST_OPT_ROLE "
uextra=0
disver=""
# keyring specific variables.
keyring=""
keyringsid=""
keyringbackupopt=""
keyringapplyopt=""
XB_DONOR_KEYRING_FILE="donor-keyring"
XB_DONOR_KEYRING_FILE_PATH=""
KEYRING_DIR=""
# Root directory for temporary files. This directory (and everything in it)
# will be removed upon exit.
tmpdirbase=""
# tmpdir used as target-dir for xtrabackup by the donor
itmpdir=""
# tmpdir used by the joiner
STATDIR=""
scomp=""
sdecomp=""
ssl_dhparams=""
pxc_encrypt_cluster_traffic=""
ssl_cert=""
ssl_ca=""
ssl_key=""
# thread options
backup_threads=-1
encrypt_threads=-1
# Required for backup locks
# For backup locks it is 1 sent by joiner
# 5.6.21 PXC and later can't donate to an older joiner
sst_ver=1
# pv is used to to meter the data passing through.
# more for statiscally reporting.
if which pv &>/dev/null && pv --help | grep -q FORMAT; then
pvopts+=$pvformat
fi
pcmd="pv $pvopts"
declare -a RC
# default XB (xtrabackup-binary) to use.
INNOBACKUPEX_BIN=xtrabackup
DATA="${WSREP_SST_OPT_DATA}"
# These files carry some important information in form of GTID of the data
# that is being backed up.
XB_GTID_INFO_FILE="xtrabackup_galera_info"
XB_GTID_INFO_FILE_PATH="${DATA}/${XB_GTID_INFO_FILE}"
IST_FILE="xtrabackup_ist"
# Used to send a file containing info about the SST
# Extend this if you want to send additional information
# from the donor to the joiner
SST_INFO_FILE="sst_info"
# Setting the path for ss and ip
# ss: is utility to investigate socket, ip for network routes.
export PATH="/usr/sbin:/sbin:$PATH"
#-------------------------------------------------------------------------------
#
# Step-3: Helper function to carry-out the main workload.
#
#
# time each of the command that we run.
timeit()
{
local stage=$1
shift
local cmd="$@"
local x1 x2 took extcode
if [[ $ttime -eq 1 ]]; then
x1=$(date +%s)
wsrep_log_debug "Evaluating (@ $stage) $cmd"
eval "$cmd"
extcode=$?
x2=$(date +%s)
took=$(( x2-x1 ))
wsrep_log_debug "NOTE: $stage took $took seconds"
totime=$(( totime+took ))
else
wsrep_log_debug "Evaluating (@ $stage) $cmd"
eval "$cmd"
extcode=$?
fi
return $extcode
}
#
# Configures the commands for encrypt=1
# Sets up the parameters (algo/keys) for XB-based encryption
# If the version of PXB is >= 2.4.7, changes the XB parameters
# If the version of PXB is < 2.4.7, use xbcrypt instead
#
get_keys()
{
# $encrypt -eq -1 is for internal purposes only
if [[ $encrypt -ge 2 || $encrypt -eq -1 ]]; then
return
fi
# TODO: it seems like encrypt=1/2/3/4 was not provided
if [[ $encrypt -eq 0 ]]; then
if $MY_PRINT_DEFAULTS -c $WSREP_SST_OPT_CONF xtrabackup | grep -q encrypt; then
wsrep_log_warning "Encryption configuration mis-match. SST may fail. Refer to http://www.percona.com/doc/percona-xtradb-cluster/manual/xtrabackup_sst.html for more details."
fi
return
fi
if [[ $sfmt == 'tar' ]]; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "* Xtrabackup-based encryption (encrypt = 1) cannot be "
wsrep_log_error "* enabled with the tar format. "
wsrep_log_error "****************************************************** "
exit 22
fi
wsrep_log_debug "Xtrabackup based encryption enabled in my.cnf"
if [[ -z $ealgo ]]; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "FATAL: Encryption algorithm empty from my.cnf, bailing out"
wsrep_log_error "****************************************************** "
exit 3
fi
if [[ -z $ekey && ! -r $ekeyfile ]]; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "FATAL: Either key or keyfile must be readable"
wsrep_log_error "****************************************************** "
exit 3
fi
if [[ -n "$ekey" ]]; then
wsrep_log_warning "Using the 'encrypt-key' option causes the encryption key"
wsrep_log_warning "to be set via the command-line and is considered insecure."
wsrep_log_warning "It is recommended to use the 'encrypt-key-file' option instead."
fi
local readonly encrypt_opts=""
if [[ -z $ekey ]]; then
encrypt_opts=" --encrypt-key-file=$ekeyfile "
else
encrypt_opts=" --encrypt-key=$ekey "
fi
# Setup the command for all non-SST transfers
# Encryption is done by xbcrypt for all other (non-SST) transfers
#
ecmd_other="xbcrypt --encrypt-algo=$ealgo $encrypt_opts "
if [[ "$WSREP_SST_OPT_ROLE" == "joiner" ]]; then
# Decryption is done by xbcrypt for all other (non-SST) transfers
ecmd_other+=" -d"
fi
#
# PXB version >= 2.4.7 added encryption support directly in PXB
#
if check_for_version $XB_VERSION "2.4.7"; then
# ensure that ecmd is clear because SST encryption
# goes through xtrabackup, not a separate program
ecmd=""
if [[ "$WSREP_SST_OPT_ROLE" == "joiner" ]]; then
# Decryption is done by xbstream for SST
xbstreameopts_sst=" --decrypt=$ealgo $encrypt_opts --encrypt-threads=$encrypt_threads "
xbstreameopts_other=""
ieopts=""
else
# Encryption is done by xtrabackup for SST
xbstreameopts_sst=""
xbstreameopts_other=""
ieopts=" --encrypt=$ealgo $encrypt_opts --encrypt-threads=$encrypt_threads "
fi
else
#
# For older versions, use xbcrypt for SST encryption/decryption
# (same as for non-SST transfers)
#
ecmd=$ecmd_other
fi
stagemsg+="-XB-Encrypted"
}
#
# If the ssl_dhparams variable is already set, uses that as a source
# of dh parameters for OpenSSL. Otherwise, looks for dhparams.pem in the
# datadir, and creates it there if it can't find the file.
# No input parameters
#
check_for_dhparams()
{
if [[ -z "$ssl_dhparams" ]]; then
if ! [[ -r "$DATA/dhparams.pem" ]]; then
wsrep_check_programs openssl
wsrep_log_info "Could not find dhparams file, creating $DATA/dhparams.pem"
if ! openssl dhparam -out "$DATA/dhparams.pem" 2048 >/dev/null 2>&1
then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "* Could not create the dhparams.pem file with OpenSSL. "
wsrep_log_error "****************************************************** "
exit 22
fi
fi
ssl_dhparams="$DATA/dhparams.pem"
fi
}
#
# verifies that the certificate matches the private key
# doing this will save us having to wait for a timeout that would
# otherwise occur.
#
# 1st param: path to the cert
# 2nd param: path to the private key
#
verify_cert_matches_key()
{
local cert_path=$1
local key_path=$2
wsrep_check_programs openssl diff
# generate the public key from the cert and the key
# they should match (otherwise we can't create an SSL connection)
if ! diff <(openssl x509 -in "$cert_path" -pubkey -noout) <(openssl rsa -in "$key_path" -pubout 2>/dev/null) >/dev/null 2>&1
then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "* The certifcate and private key do not match. "
wsrep_log_error "* Please check your certificate and key files. "
wsrep_log_error "****************************************************** "
exit 22
fi
}
#
# verifies that the CA file verifies the certificate
# doing this here lets us generate better error messages
#
# 1st param: path to the CA file
# 2nd param: path to the cert
#
verify_ca_matches_cert()
{
local ca_path=$1
local cert_path=$2
wsrep_check_programs openssl
if ! openssl verify -verbose -CAfile "$ca_path" "$cert_path" >/dev/null 2>&1
then
wsrep_log_error "******** FATAL ERROR ****************************************** "
wsrep_log_error "* The certifcate and CA (certificate authority) do not match. "
wsrep_log_error "* It does not appear that the certificate was issued by the CA. "
wsrep_log_error "* Please check your certificate and CA files. "
wsrep_log_error "*************************************************************** "
exit 22
fi
}
#
# Checks to see if the file exists
# If the file does not exist (or cannot be read), issues an error
# and exits
#
# 1st param: file name to be checked (for read access)
# 2nd param: 1st error message (header)
# 3rd param: 2nd error message (footer, optional)
#
verify_file_exists()
{
local file_path=$1
local error_message1=$2
local error_message2=$3
if ! [[ -r "$file_path" ]]; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "* $error_message1 "
wsrep_log_error "* Could not find/access : $file_path "
if ! [[ -z "$error_message2" ]]; then
wsrep_log_error "* $error_message2 "
fi
wsrep_log_error "****************************************************** "
exit 22
fi
}
#
# Setup stream to transfer. (Alternative: nc or socat)
get_transfer()
{
if [[ -z $SST_PORT ]]; then
TSST_PORT=4444
else
TSST_PORT=$SST_PORT
fi
if [[ $tfmt == 'nc' ]]; then
if [[ ! -x `which nc` ]]; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "nc(netcat) not found in path: $PATH"
wsrep_log_error "****************************************************** "
exit 2
fi
if [[ $encrypt -eq 2 || $encrypt -eq 3 || $encrypt -eq 4 ]]; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "* Using SSL encryption (encrypt= 2, 3, or 4) "
wsrep_log_error "* is not supported when using nc(netcat). "
wsrep_log_error "****************************************************** "
exit 22
fi
wsrep_log_debug "Using netcat as streamer"
if [[ "$WSREP_SST_OPT_ROLE" == "joiner" ]]; then
if nc -h 2>&1 | grep -q ncat; then
tcmd="nc $ncsockopt -l ${TSST_PORT}"
else
tcmd="nc $ncsockopt -dl ${TSST_PORT}"
fi
else
# netcat doesn't understand [] around IPv6 address
tcmd="nc ${REMOTEIP//[\[\]]/} ${TSST_PORT}"
fi
else
tfmt='socat'
wsrep_log_debug "Using socat as streamer"
if [[ ! -x `which socat` ]]; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "socat not found in path: $PATH"
wsrep_log_error "****************************************************** "
exit 2
fi
donor_extra=""
joiner_extra=""
if [[ $encrypt -eq 2 || $encrypt -eq 3 || $encrypt -eq 4 ]]; then
if ! socat -V | grep -q WITH_OPENSSL; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "* socat is not openssl enabled. "
wsrep_log_error "* Unable to encrypt SST communications. "
wsrep_log_error "****************************************************** "
exit 2
fi
# Determine the socat version
SOCAT_VERSION=`socat -V 2>&1 | grep -oe '[0-9]\.[0-9][\.0-9]*' | head -n1`
if [[ -z "$SOCAT_VERSION" ]]; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "* Cannot determine the socat version. "
wsrep_log_error "****************************************************** "
exit 2
fi
# socat versions < 1.7.3 will have 512-bit dhparams (too small)
# so create 2048-bit dhparams and send that as a parameter
# socat version >= 1.7.3, checks to see if the peername matches the hostname
# set commonname="" to disable the peername checks
#
if ! check_for_version "$SOCAT_VERSION" "1.7.3"; then
if [[ "$WSREP_SST_OPT_ROLE" == "joiner" ]]; then
# dhparams check (will create ssl_dhparams if needed)
check_for_dhparams
joiner_extra=",dhparam=$ssl_dhparams"
fi
fi
if check_for_version "$SOCAT_VERSION" "1.7.3"; then
donor_extra=',commonname=""'
fi
fi
# prepend a comma if it's not already there
if [[ -n "${sockopt}" ]] && [[ "${sockopt}" != ","* ]]; then
sockopt=",${sockopt}"
fi
if [[ $encrypt -eq 2 ]]; then
wsrep_log_warning "**** WARNING **** encrypt=2 is deprecated and will be removed in a future release"
wsrep_log_debug "Using openssl based encryption with socat: with crt and ca"
verify_file_exists "$tcert" "Both certificate and CA files are required." \
"Please check the 'tcert' option. "
verify_file_exists "$tca" "Both certificate and CA files are required." \
"Please check the 'tca' option. "
verify_ca_matches_cert $tca $tcert
stagemsg+="-OpenSSL-Encrypted-2"
if [[ "$WSREP_SST_OPT_ROLE" == "joiner" ]];then
wsrep_log_debug "Decrypting with CERT: $tcert, CA: $tca"
tcmd="socat -u openssl-listen:${TSST_PORT},reuseaddr,cert=${tcert},cafile=${tca}${joiner_extra}${sockopt} stdio"
else
wsrep_log_debug "Encrypting with CERT: $tcert, CA: $tca"
tcmd="socat -u stdio openssl-connect:${REMOTEIP}:${TSST_PORT},cert=${tcert},cafile=${tca}${donor_extra}${sockopt}"
fi
elif [[ $encrypt -eq 3 ]];then
wsrep_log_warning "**** WARNING **** encrypt=3 is deprecated and will be removed in a future release"
wsrep_log_debug "Using openssl based encryption with socat: with key and crt"
verify_file_exists "$tcert" "Both certificate and key files are required." \
"Please check the 'tcert' option. "
verify_file_exists "$tkey" "Both certificate and key files are required." \
"Please check the 'tkey' option. "
verify_cert_matches_key $tcert $tkey
stagemsg+="-OpenSSL-Encrypted-3"
if [[ "$WSREP_SST_OPT_ROLE" == "joiner" ]];then
wsrep_log_debug "Decrypting with CERT: $tcert, KEY: $tkey"
tcmd="socat -u openssl-listen:${TSST_PORT},reuseaddr,cert=${tcert},key=${tkey},verify=0${joiner_extra}${sockopt} stdio"
else
wsrep_log_debug "Encrypting with CERT: $tcert, KEY: $tkey"
tcmd="socat -u stdio openssl-connect:${REMOTEIP}:${TSST_PORT},cert=${tcert},key=${tkey},verify=0${sockopt}"
fi
elif [[ $encrypt -eq 4 ]]; then
wsrep_log_debug "Using openssl based encryption with socat: with key, crt, and ca"
verify_file_exists "$ssl_ca" "CA, certificate, and key files are required." \
"Please check the 'ssl-ca' option. "
verify_file_exists "$ssl_cert" "CA, certificate, and key files are required." \
"Please check the 'ssl-cert' option. "
verify_file_exists "$ssl_key" "CA, certificate, and key files are required." \
"Please check the 'ssl-key' option. "
verify_cert_matches_key $ssl_cert $ssl_key
verify_ca_matches_cert $ssl_ca $ssl_cert
stagemsg+="-OpenSSL-Encrypted-4"
if [[ "$WSREP_SST_OPT_ROLE" == "joiner" ]]; then
wsrep_log_debug "Decrypting with CERT: $ssl_cert, KEY: $ssl_key, CA: $ssl_ca"
tcmd="socat -u openssl-listen:${TSST_PORT},reuseaddr,cert=${ssl_cert},key=${ssl_key},cafile=${ssl_ca},verify=1${joiner_extra}${sockopt} stdio"
else
wsrep_log_debug "Encrypting with CERT: $ssl_cert, KEY: $ssl_key, CA: $ssl_ca"
tcmd="socat -u stdio openssl-connect:${REMOTEIP}:${TSST_PORT},cert=${ssl_cert},key=${ssl_key},cafile=${ssl_ca},verify=1${donor_extra}${sockopt}"
fi
else
if [[ $encrypt -eq 1 ]]; then
wsrep_log_warning "**** WARNING **** encrypt=1 is deprecated and will be removed in a future release"
fi
if [[ "$WSREP_SST_OPT_ROLE" == "joiner" ]]; then
tcmd="socat -u TCP-LISTEN:${TSST_PORT},reuseaddr${sockopt} stdio"
else
tcmd="socat -u stdio TCP:${REMOTEIP}:${TSST_PORT}${sockopt}"
fi
fi
fi
}
#
# read the sst specific options.
read_cnf()
{
sfmt=$(parse_cnf sst streamfmt "xbstream")
tfmt=$(parse_cnf sst transferfmt "socat")
tca=$(parse_cnf sst tca "")
tcert=$(parse_cnf sst tcert "")
tkey=$(parse_cnf sst tkey "")
encrypt=$(parse_cnf sst encrypt 0)
sockopt=$(parse_cnf sst sockopt "")
ncsockopt=$(parse_cnf sst ncsockopt "")
progress=$(parse_cnf sst progress "")
rebuild=$(parse_cnf sst rebuild 0)
ttime=$(parse_cnf sst time 0)
scomp=$(parse_cnf sst compressor "")
sdecomp=$(parse_cnf sst decompressor "")
keyring=$(parse_cnf mysqld keyring-file-data "")
if [[ -z $keyring ]]; then
keyring=$(parse_cnf sst keyring-file-data "")
fi
if [[ -n $keyring ]]; then
KEYRING_DIR=$(dirname "${keyring}")
fi
keyringsid=$(parse_cnf mysqld server-id "")
if [[ -z $keyringsid ]]; then
keyringsid=$(parse_cnf sst server-id "")
fi
# If we can't find a server-id, assume a default of 0
if [[ -z $keyringsid ]]; then
keyringsid=0
fi
# Refer to http://www.percona.com/doc/percona-xtradb-cluster/manual/xtrabackup_sst.html
ealgo=$(parse_cnf xtrabackup encrypt "")
ekey=$(parse_cnf xtrabackup encrypt-key "")
ekeyfile=$(parse_cnf xtrabackup encrypt-key-file "")
if [[ -z $ealgo ]]; then
ealgo=$(parse_cnf sst encrypt-algo "")
ekey=$(parse_cnf sst encrypt-key "")
ekeyfile=$(parse_cnf sst encrypt-key-file "")
fi
# Pull the parameters needed for encrypt=4
ssl_ca=$(parse_cnf sst ssl-ca "")
if [[ -z "$ssl_ca" ]]; then
ssl_ca=$(parse_cnf mysqld ssl-ca "")
fi
ssl_cert=$(parse_cnf sst ssl-cert "")
if [[ -z "$ssl_cert" ]]; then
ssl_cert=$(parse_cnf mysqld ssl-cert "")
fi
ssl_key=$(parse_cnf sst ssl-key "")
if [[ -z "$ssl_key" ]]; then
ssl_key=$(parse_cnf mysqld ssl-key "")
fi
pxc_encrypt_cluster_traffic=$(parse_cnf mysqld pxc-encrypt-cluster-traffic "")
pxc_encrypt_cluster_traffic=$(normalize_boolean "$pxc_encrypt_cluster_traffic" "off")
ssl_dhparams=$(parse_cnf sst ssl-dhparams "")
rlimit=$(parse_cnf sst rlimit "")
uextra=$(parse_cnf sst use-extra 0)
iopts=$(parse_cnf sst inno-backup-opts "")
iapts=$(parse_cnf sst inno-apply-opts "")
impts=$(parse_cnf sst inno-move-opts "")
stimeout=$(parse_cnf sst sst-initial-timeout 100)
ssyslog=$(parse_cnf sst sst-syslog 0)
ssystag=$(parse_cnf mysqld_safe syslog-tag "${SST_SYSLOG_TAG:-}")
ssystag+="-"
# thread options
encrypt_threads=$(parse_cnf sst encrypt-threads -1)
if [[ $encrypt_threads -eq -1 ]]; then
encrypt_threads=$(parse_cnf sst encrypt_threads -1)
fi
if [[ $encrypt_threads -le 0 ]]; then
encrypt_threads=4
fi
backup_threads=$(parse_cnf sst backup-threads -1)
if [[ $backup_threads -eq -1 ]]; then
backup_threads=$(parse_cnf sst backup_threads -1)
fi
if [[ $backup_threads -le 0 ]]; then
backup_threads=4
fi
if [[ $ssyslog -ne -1 ]]; then
if $MY_PRINT_DEFAULTS -c $WSREP_SST_OPT_CONF mysqld_safe | tr '_' '-' | grep -q -- "--syslog"; then
ssyslog=1
fi
fi
# Pull out the buffer pool size to be used by PXB
# and set it in use-memory (if not specified in inno-apply-opts)
#
# Is the use-memory option already specified in inno-apply-opts?
if ! [[ "$iapts" =~ --use-memory= ]]; then
bufferpoolsize=$(parse_cnf xtrabackup use-memory "")
if [[ -z "$bufferpoolsize" ]]; then
bufferpoolsize=$(parse_cnf mysqld innodb-buffer-pool-size "")
fi
if [[ -z "$bufferpoolsize" ]]; then
bufferpoolsize=$(parse_cnf mysqld innodb_buffer_pool_size "")
fi
if [[ -n "$bufferpoolsize" ]]; then
iapts="$iapts --use-memory=$bufferpoolsize"
fi
fi
# Setup # of threads (if not already specified)
if [[ ! "$iopts" =~ --parallel= ]]; then
iopts+=" --parallel=$backup_threads"
fi
# Buildup the list of files to keep in the datadir
# (These files will not be REMOVED on the joiner node)
cpat=$(parse_cnf sst cpat '.*\.pem$\|.*init\.ok$\|.*galera\.cache$\|.*sst_in_progress$\|.*\.sst$\|.*gvwstate\.dat$\|.*grastate\.dat$\|.*\.err$\|.*\.log$\|.*RPM_UPGRADE_MARKER$\|.*RPM_UPGRADE_HISTORY$')
# Keep the donor's keyring file
cpat+="\|.*/${XB_DONOR_KEYRING_FILE}$"
# Keep the KEYRING_DIR if it is a subdir of the datadir
# Normalize the datadir for comparison
local readonly DATA_TEMP=$(dirname "$DATA/xxx")
if [[ -n "$KEYRING_DIR" && "$KEYRING_DIR" != "$DATA_TEMP" && "$KEYRING_DIR/" =~ $DATA ]]; then
# Add the path to each subdirectory, this will ensure that
# the path to the keyring is kept
local CURRENT_DIR=$(dirname "$KEYRING_DIR/xx")
while [[ $CURRENT_DIR != "." && $CURRENT_DIR != "/" && $CURRENT_DIR != "$DATA_TEMP" ]]; do
cpat+="\|${CURRENT_DIR}$"
CURRENT_DIR=$(dirname "$CURRENT_DIR")
done
fi
# Retry the connection 30 times (at 1-second intervals)
if [[ ! "$sockopt" =~ retry= ]]; then
sockopt+=",retry=30"
fi
}
#
# get a feel of how big payload is being used to estimate progress.
get_footprint()
{
pushd $WSREP_SST_OPT_DATA 1>/dev/null
payload=$(find . -regex '.*\.ibd$\|.*\.MYI$\|.*\.MYD$\|.*ibdata1$' -type f -print0 | xargs -0 du --block-size=1 -c | awk 'END { print $1 }')
if $MY_PRINT_DEFAULTS -c $WSREP_SST_OPT_CONF xtrabackup | grep -q -- "--compress"; then
# QuickLZ has around 50% compression ratio
# When compression/compaction used, the progress is only an approximate.
payload=$(( payload*1/2 ))
fi
popd 1>/dev/null
pcmd+=" -s $payload"
adjust_progress
}
#
# progress emitting function. This is just for user to monitor there is
# no programatic use of this monitoring.
adjust_progress()
{
if [[ ! -x `which pv` ]]; then
wsrep_log_error "pv not found in path: $PATH"
wsrep_log_error "Disabling all progress/rate-limiting"
pcmd=""
rlimit=""
progress=""
return
fi
if [[ -n $progress && $progress != '1' ]]; then
if [[ -e $progress ]]; then
pcmd+=" 2>>$progress"
else
pcmd+=" 2>$progress"
fi
elif [[ -z $progress && -n $rlimit ]]; then
# When rlimit is non-zero
pcmd="pv -q"
fi
if [[ -n $rlimit && "$WSREP_SST_OPT_ROLE" == "donor" ]]; then
wsrep_log_debug "Rate-limiting SST to $rlimit"
pcmd+=" -L \$rlimit"
fi
}
#
# Fills in strmcmd, which holds the command used for streaming
#
# Note:
# This code creates a command that uses FILE_TO_STREAM
#
get_stream()
{
if [[ $sfmt == 'xbstream' ]]; then
wsrep_log_debug "Streaming with xbstream"
if [[ "$WSREP_SST_OPT_ROLE" == "joiner" ]]; then
strmcmd="xbstream \$xbstreameopts -x"
else
strmcmd="xbstream \$xbstreameopts -c \${FILE_TO_STREAM}"
fi
else
sfmt="tar"
wsrep_log_debug "Streaming with tar"
if [[ "$WSREP_SST_OPT_ROLE" == "joiner" ]]; then
strmcmd="tar xfi - "
else
strmcmd="tar cf - \${FILE_TO_STREAM} "
fi
fi
}
#
# Some more monitoring and cleanup functions.
get_proc()
{
set +e
nproc=$(grep -c processor /proc/cpuinfo)
[[ -z $nproc || $nproc -eq 0 ]] && nproc=1
set -e
}
sig_joiner_cleanup()
{
wsrep_log_error "Removing $XB_GTID_INFO_FILE_PATH file due to signal"
rm -f "$XB_GTID_INFO_FILE_PATH" 2> /dev/null
wsrep_log_error "Removing $XB_DONOR_KEYRING_FILE_PATH file due to signal"
rm -f "$XB_DONOR_KEYRING_FILE_PATH" 2> /dev/null || true
}
cleanup_joiner()
{
# Since this is invoked just after exit NNN
local estatus=$?
if [[ $estatus -ne 0 ]]; then
wsrep_log_error "Cleanup after exit with status:$estatus"
elif [ "${WSREP_SST_OPT_ROLE}" = "joiner" ]; then
wsrep_log_debug "Removing the sst_in_progress file"
wsrep_cleanup_progress_file
fi
if [[ -n $progress && -p $progress ]]; then
wsrep_log_debug "Cleaning up fifo file $progress"
rm $progress
fi
if [[ -n "${tmpdirbase}" ]]; then
[[ -d "${tmpdirbase}" ]] && rm -rf "${tmpdirbase}" || true
fi
if [[ -r "${XB_DONOR_KEYRING_FILE_PATH}" ]]; then
rm -f "${XB_DONOR_KEYRING_FILE_PATH}"
fi
# Final cleanup
pgid=$(ps -o pgid= $$ | grep -o '[0-9]*')
# This means no setsid done in mysqld.
# We don't want to kill mysqld here otherwise.
if [[ $$ -eq $pgid ]]; then
# This means a signal was delivered to the process.
# So, more cleanup.
if [[ $estatus -ge 128 ]]; then
kill -KILL -$$ || true
fi
fi
exit $estatus
}
cleanup_donor()
{
# Since this is invoked just after exit NNN
local estatus=$?
if [[ $estatus -ne 0 ]]; then
wsrep_log_error "Cleanup after exit with status:$estatus"
fi
rm -f ${DATA}/${IST_FILE} || true
if [[ -n $progress && -p $progress ]]; then
wsrep_log_debug "Cleaning up fifo file $progress"
rm -f $progress || true
fi
wsrep_log_debug "Cleaning up temporary directories"
if [[ -n "${tmpdirbase}" ]]; then
[[ -d "${tmpdirbase}" ]] && rm -rf "${tmpdirbase}" || true
fi
# Final cleanup
pgid=$(ps -o pgid= $$ | grep -o '[0-9]*')
# This means no setsid done in mysqld.
# We don't want to kill mysqld here otherwise.
if [[ $$ -eq $pgid ]]; then
# This means a signal was delivered to the process.
# So, more cleanup.
if [[ $estatus -ge 128 ]]; then
kill -KILL -$$ || true
fi
fi
rm -rf "${KEYRING_DIR}/${XB_DONOR_KEYRING_FILE}" || true
exit $estatus
}
setup_ports()
{
if [[ "$WSREP_SST_OPT_ROLE" == "donor" ]];then
SST_PORT=$WSREP_SST_OPT_PORT
REMOTEIP=$WSREP_SST_OPT_HOST
lsn=$(echo $WSREP_SST_OPT_PATH | awk -F '[/]' '{ print $2 }')
sst_ver=$(echo $WSREP_SST_OPT_PATH | awk -F '[/]' '{ print $3 }')
else
SST_PORT=$WSREP_SST_OPT_PORT
fi
}
# waits ~1 minute for nc/socat to open the port and then reports ready
# (regardless of timeout)
wait_for_listen()
{
local HOST=$1
local PORT=$2
local MODULE=$3
for i in {1..300}
do
ss -p state listening "( sport = :$PORT )" | grep -qE 'socat|nc' && break
sleep 0.2
done
echo "ready ${HOST}:${PORT}/${MODULE}//$sst_ver"
}
#
# check if there are any extra options to parse.
# Note: if port is specified socket is not used.
check_extra()
{
local use_socket=1
if [[ $uextra -eq 1 ]]; then
if $MY_PRINT_DEFAULTS -c $WSREP_SST_OPT_CONF mysqld | tr '_' '-' | grep -- "--thread-handling=" | grep -q 'pool-of-threads'; then
local eport=$($MY_PRINT_DEFAULTS -c $WSREP_SST_OPT_CONF mysqld | tr '_' '-' | grep -- "--extra-port=" | cut -d= -f2)
if [[ -n $eport ]]; then
# Xtrabackup works only locally.
# Hence, setting host to 127.0.0.1 unconditionally.
wsrep_log_debug "SST through extra_port $eport"
INNOEXTRA+=" --host=127.0.0.1 --port=$eport "
use_socket=0
else
wsrep_log_error "Extra port $eport null, failing"
exit 1
fi
else
wsrep_log_warning "Thread pool not set, ignore the option use_extra"
fi
fi
if [[ $use_socket -eq 1 ]] && [[ -n "${WSREP_SST_OPT_SOCKET}" ]]; then
INNOEXTRA+=" --socket=${WSREP_SST_OPT_SOCKET}"
fi
}
#
# JOINER function to recieve data from DONOR.
#
# 1st param: dir
# 2nd param: msg
# 3rd param: tmt : timeout
# 4th param: checkf : file check
# If this is -2, skip the file checks (but still check the return code)
# If this is -1, skip all error checking
# If this is 0, do nothing (no additional checks)
# If this is 1, check to see if the gtid info file exists
# If this is 2, check to see if the keyring file exists
recv_data_from_donor_to_joiner()
{
local dir=$1
local msg=$2
local tmt=$3
local checkf=$4
local ltcmd
if [[ ! -d ${dir} ]]; then
# This indicates that IST is in progress
return
fi
pushd ${dir} 1>/dev/null
set +e
if [[ $tmt -gt 0 && -x `which timeout` ]]; then
if timeout --help | grep -q -- '-k'; then
ltcmd="timeout -k $(( tmt+10 )) $tmt $tcmd"
else
ltcmd="timeout -s9 $tmt $tcmd"
fi
timeit "$msg" "$ltcmd | $strmcmd; RC=( "\${PIPESTATUS[@]}" )"
else
timeit "$msg" "$tcmd | $strmcmd; RC=( "\${PIPESTATUS[@]}" )"
fi
set -e
popd 1>/dev/null
if [[ $checkf -eq -1 ]]; then
# we don't care about errors (or we expect an error to occur)
# just return
return
fi
if [[ ${RC[0]} -eq 124 ]]; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "Possible timeout in receving first data from donor in gtid/keyring stage"
wsrep_log_error "****************************************************** "
exit 32
fi
for ecode in "${RC[@]}";do
if [[ $ecode -ne 0 ]]; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "Error while getting data from donor node: " \
"exit codes: ${RC[@]}"
wsrep_log_error "****************************************************** "
exit 32
fi
done
if [[ $checkf -eq -2 ]]; then
# no file checking
return
fi
if [[ $checkf -eq 1 && ! -r "${XB_GTID_INFO_FILE_PATH}" ]]; then
# this message should cause joiner to abort
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "xtrabackup process ended without creating '${XB_GTID_INFO_FILE_PATH}'"
wsrep_log_error "****************************************************** "
wsrep_log_debug "Contents of datadir"
wsrep_log_debug "$(ls -l ${dir}/*)"
exit 32
fi
if [[ $checkf -eq 2 && ! -r "${XB_DONOR_KEYRING_FILE_PATH}" ]]; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "FATAL: xtrabackup could not find '${XB_DONOR_KEYRING_FILE_PATH}'"
wsrep_log_error "The joiner is using a keyring file but the donor has not sent"
wsrep_log_error "a keyring file. Please check your configuration to ensure that"
wsrep_log_error "both sides are using a keyring file"
wsrep_log_error "****************************************************** "
exit 32
fi
}
#
# Process to send data from DONOR to JOINER
#
# Parameters:
# 1 : dir - the base directory (paths are based on this)
# 2 : msg - descriptive message
#
send_data_from_donor_to_joiner()
{
local dir=$1
local msg=$2
pushd ${dir} 1>/dev/null
set +e
timeit "$msg" "$strmcmd | $tcmd; RC=( "\${PIPESTATUS[@]}" )"
set -e
popd 1>/dev/null
for ecode in "${RC[@]}";do
if [[ $ecode -ne 0 ]]; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "Error while sending data to joiner node: " \
"exit codes: ${RC[@]}"
wsrep_log_error "****************************************************** "
exit 32
fi
done
}
# Returns the version string in a standardized format
# Input "1.2.3" => echoes "010203"
# Wrongly formatted values => echoes "000000"
normalize_version()
{
local major=0
local minor=0
local patch=0
# Only parses purely numeric version numbers, 1.2.3
# Everything after the first three values are ignored
if [[ $1 =~ ^([0-9]+)\.([0-9]+)\.?([0-9]*)([\.0-9])*$ ]]; then
major=${BASH_REMATCH[1]}
minor=${BASH_REMATCH[2]}
patch=${BASH_REMATCH[3]}
fi
printf %02d%02d%02d $major $minor $patch
}
# Compares two version strings
# The first parameter is the version to be checked
# The second parameter is the minimum version required
# Returns 0 (success) if $1 >= $2, 1 (failure) otherwise
check_for_version()
{
local local_version_str="$( normalize_version $1 )"
local required_version_str="$( normalize_version $2 )"
if [[ "$local_version_str" < "$required_version_str" ]]; then
return 1
else
return 0
fi
}
#
# Initiailizes the tmpdir
# Reads the info from the config file and creates the tmpdir as needed.
#
# Sets the $tmpdirbase variable to the root of the temporary directory
# to be used by SST. This directory will be removed upon exiting the script.
#
initialize_tmpdir()
{
local tmpdir_path=""
tmpdir_path=$(parse_cnf sst tmpdir "")
if [[ -z "${tmpdir_path}" ]]; then
tmpdir_path=$(parse_cnf xtrabackup tmpdir "")
fi
if [[ -z "${tmpdir_path}" ]]; then
tmpdir_path=$(parse_cnf mysqld tmpdir "")
fi
if [[ -n "${tmpdir_path}" ]]; then
if [[ ! -d "${tmpdir_path}" ]]; then
wsrep_log_error "Cannot find the directory, ${tmpdir_path}, the tmpdir must exist before startup."
exit 2
fi
if [[ ! -r "${tmpdir_path}" ]]; then
wsrep_log_error "The temporary directory, ${tmpdir_path}, is not readable. Please check the directory permissions."
exit 22
fi
if [[ ! -w "${tmpdir_path}" ]]; then
wsrep_log_error "The temporary directory, ${tmpdir_path}, is not writable. Please check the directory permissions."
exit 22
fi
fi
if [[ -z "${tmpdir_path}" ]]; then
tmpdir_path=$(mktemp -dt pxc_sst_XXXX)
else
tmpdir_path=$(mktemp -p "${tmpdir_path}" -dt pxc_sst_XXXX)
fi
# This directory (and everything in it), will be removed upon exit
tmpdirbase=$tmpdir_path
}
#
# Parses the passed in config file and returns the option in the
# specified group.
#
# 1st param: source_path : path the the source file
# 2nd param: group : name of the config file section, e.g. mysqld
# 3rd param: var : name of the variable in the section, e.g. server-id
# 4th param: - : default value for the param
#
parse_sst_info()
{
local source_path=$1
local group=$2
local var=$3
local reval=""
# print the default settings for given group using my_print_default.
# normalize the variable names specified in cnf file (user can use _ or -
# for example log-bin or log_bin) then grep for needed variable
# finally get the variable value (if variables has been specified
# multiple time use the last value only)
reval=$($MY_PRINT_DEFAULTS -c "$source_path" $group | awk -F= '{if ($1 ~ /_/) { gsub(/_/,"-",$1); print $1"="$2 } else { print $0 }}' | grep -- "--$var=" | cut -d= -f2- | tail -1)
# use default if we haven't found a value
if [[ -z $reval ]]; then
[[ -n $4 ]] && reval=$4
fi
echo $reval
}
#-------------------------------------------------------------------------------
#
# Step-4: Main workload logic starts here.
#
#
# Validation check for xtrabackup binary.
if [[ ! -x `which $INNOBACKUPEX_BIN` ]]; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "$INNOBACKUPEX_BIN not in path: $PATH"
wsrep_log_error "****************************************************** "
exit 2
fi
# XB_REQUIRED_VERSION requires at least major.minor version (e.g. 2.4.1 or 3.0)
#
# 2.4.3 : Starting with 5.7, the redo log format has changed and so XB-2.4.3 or higher is needed
# for performing backup (read SST)
#
# 2.4.4 : needed to support the keyring option
#
XB_REQUIRED_VERSION="2.4.4"
XB_VERSION=`$INNOBACKUPEX_BIN --version 2>&1 | grep -oe '[0-9]\.[0-9][\.0-9]*' | head -n1`
if [[ -z $XB_VERSION ]]; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "Cannot determine the $INNOBACKUPEX_BIN version. Needs xtrabackup-$XB_REQUIRED_VERSION or higher to perform SST"
wsrep_log_error "****************************************************** "
exit 2
fi
if ! check_for_version $XB_VERSION $XB_REQUIRED_VERSION; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "The $INNOBACKUPEX_BIN version is $XB_VERSION. Needs xtrabackup-$XB_REQUIRED_VERSION or higher to perform SST"
wsrep_log_error "****************************************************** "
exit 2
fi
wsrep_log_debug "The $INNOBACKUPEX_BIN version is $XB_VERSION"
# Get our MySQL version
MYSQL_VERSION=$($(dirname $0)/mysqld --version 2>&1 | grep -oe '[0-9]\.[0-9][\.0-9]*' | head -n1)
rm -f "${XB_GTID_INFO_FILE_PATH}"
#
# establish roles. Either it should be JOINER or DONOR.
if [[ ! ${WSREP_SST_OPT_ROLE} == 'joiner' && ! ${WSREP_SST_OPT_ROLE} == 'donor' ]]; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "Invalid role ${WSREP_SST_OPT_ROLE}"
wsrep_log_error "****************************************************** "
exit 22
fi
#
# read configuration and setup ports for streaming data.
read_cnf
setup_ports
#
# If pxc_encrypt_cluster_traffic is set, do the SSL autoconfig
# (overriding any values already in the config file)
if [[ "$pxc_encrypt_cluster_traffic" == "on" ]]; then
encrypt=4
# Look for the [mysqld] files only, not the ones in [sst]
ssl_ca=$(parse_cnf mysqld ssl-ca "")
ssl_cert=$(parse_cnf mysqld ssl-cert "")
ssl_key=$(parse_cnf mysqld ssl-key "")
# Check that we have all the files
# If they have not been explicitly specified, check the datadir
if [[ -z "$ssl_ca" ]]; then
if [[ -r "$DATA/ca.pem" ]]; then
ssl_ca="$DATA/ca.pem"
else
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "* Could not find a CA (Certificate Authority) file. "
wsrep_log_error "* Please specify a CA file with the 'ssl-ca' option. "
wsrep_log_error "**************************************************** "
return 2
fi
fi
if [[ -z "$ssl_cert" ]]; then
if [[ -r "$DATA/server-cert.pem" ]]; then
ssl_cert="$DATA/server-cert.pem"
else
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "* Could not find a certificate file. "
wsrep_log_error "* Please specify a certificate file with the 'ssl-cert' option. "
wsrep_log_error "****************************************************** "
return 2
fi
fi
if [[ -z "$ssl_key" ]]; then
if [[ -r "$DATA/server-key.pem" ]]; then
ssl_key="$DATA/server-key.pem"
else
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "* Could not find a key file. "
wsrep_log_error "* Please specify a key file with the 'ssl-key' option. "
wsrep_log_error "****************************************************** "
return 2
fi
fi
wsrep_log_debug "pxc_encrypt_cluster_traffic is enabled, using PXC auto-ssl configuration"
wsrep_log_debug "with encrypt=4 ssl_ca=$ssl_ca ssl_cert=$ssl_cert ssl_key=$ssl_key"
fi
if ${INNOBACKUPEX_BIN} /tmp --help 2>/dev/null | grep -q -- '--version-check'; then
disver="--no-version-check"
fi
if [[ ${FORCE_FTWRL:-0} -eq 1 ]]; then
wsrep_log_warning "Forcing FTWRL due to environment variable FORCE_FTWRL equal to $FORCE_FTWRL"
iopts+=" --no-backup-locks "
fi
INNOEXTRA=""
#
# Use syslogger (for logging) if configured else continue
# to use file-based logging.
if [[ $ssyslog -eq 1 ]]; then
if [[ ! -x `which logger` ]]; then
wsrep_log_error "logger not in path: $PATH. Ignoring"
else
wsrep_log_info "Logging all stderr of SST/XtraBackup to syslog"
exec 2> >(logger -p daemon.err -t ${ssystag}wsrep-sst-$WSREP_SST_OPT_ROLE)
wsrep_log_error()
{
logger -p daemon.err -t ${ssystag}wsrep-sst-$WSREP_SST_OPT_ROLE "$@"
}
wsrep_log_warning()
{
logger -p daemon.warn -t ${ssystag}wsrep-sst-$WSREP_SST_OPT_ROLE "$@"
}
wsrep_log_info()
{
logger -p daemon.info -t ${ssystag}wsrep-sst-$WSREP_SST_OPT_ROLE "$@"
}
wsrep_log_debug()
{
if [[ -n "$WSREP_LOG_DEBUG" ]]; then
logger -p daemon.debug -t ${ssystag}wsrep-sst-$WSREP_SST_OPT_ROLE "$@"
fi
}
INNOAPPLY="${INNOBACKUPEX_BIN} $disver $iapts --prepare --binlog-info=ON \$rebuildcmd \$keyringapplyopt --target-dir=\${DATA} 2>&1 | logger -p daemon.err -t ${ssystag}innobackupex-apply "
INNOMOVE="${INNOBACKUPEX_BIN} --defaults-file=${WSREP_SST_OPT_CONF} --datadir=\${TDATA} --defaults-group=mysqld${WSREP_SST_OPT_CONF_SUFFIX} $disver $impts --move-back --binlog-info=ON --force-non-empty-directories --target-dir=\${DATA} 2>&1 | logger -p daemon.err -t ${ssystag}innobackupex-move "
INNOBACKUP="${INNOBACKUPEX_BIN} --defaults-file=${WSREP_SST_OPT_CONF} --defaults-group=mysqld${WSREP_SST_OPT_CONF_SUFFIX} $disver $iopts \$ieopts \$INNOEXTRA \$keyringbackupopt --backup --galera-info --binlog-info=ON --stream=\$sfmt --target-dir=\$itmpdir 2> >(logger -p daemon.err -t ${ssystag}innobackupex-backup)"
fi
else
INNOAPPLY="${INNOBACKUPEX_BIN} $disver $iapts --prepare --binlog-info=ON \$rebuildcmd \$keyringapplyopt --target-dir=\${DATA} &>\${DATA}/innobackup.prepare.log"
INNOMOVE="${INNOBACKUPEX_BIN} --defaults-file=${WSREP_SST_OPT_CONF} --defaults-group=mysqld${WSREP_SST_OPT_CONF_SUFFIX} --datadir=\${TDATA} $disver $impts --move-back --binlog-info=ON --force-non-empty-directories --target-dir=\${DATA} &>\${DATA}/innobackup.move.log"
INNOBACKUP="${INNOBACKUPEX_BIN} --defaults-file=${WSREP_SST_OPT_CONF} --defaults-group=mysqld${WSREP_SST_OPT_CONF_SUFFIX} $disver $iopts \$ieopts \$INNOEXTRA \$keyringbackupopt --backup --galera-info --binlog-info=ON --stream=\$sfmt --target-dir=\$itmpdir 2>\${DATA}/innobackup.backup.log"
fi
#
# Setup stream for transfering and streaming.
get_stream
get_transfer
if [ "$WSREP_SST_OPT_ROLE" = "donor" ]
then
#
# signal handler for cleanup-based-exit.
trap cleanup_donor EXIT
initialize_tmpdir
# main temp directory for SST (non-XB) related files
donor_tmpdir=$(mktemp -p "${tmpdirbase}" -dt donor_tmp_XXXX)
# Create the SST info file
# This file contains SST information that is passed from the
# donor to the joiner.
#
# Add more parameters to the file here as needed
# This file has the same format as a cnf file.
#
sst_info_file_path="${donor_tmpdir}/${SST_INFO_FILE}"
echo "[sst]" > "$sst_info_file_path"
echo "galera-gtid=$WSREP_SST_OPT_GTID" >> "$sst_info_file_path"
echo "binlog-name=$(basename "$WSREP_SST_OPT_BINLOG")" >> "$sst_info_file_path"
echo "mysql-version=$MYSQL_VERSION" >> "$sst_info_file_path"
#
# SST is not needed. IST would suffice. By-pass SST.
if [ $WSREP_SST_OPT_BYPASS -eq 0 ]
then
usrst=0
if [[ -z $sst_ver ]]; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "Upgrade joiner to 5.6.21 or higher for backup locks support"
wsrep_log_error "The joiner is not supported for this version of donor"
wsrep_log_error "****************************************************** "
exit 93
fi
# main temp directory for xtrabackup (target-dir)
itmpdir=$(mktemp -p "${tmpdirbase}" -dt donor_xb_XXXX)
if [[ -n "${WSREP_SST_OPT_USER:-}" && "$WSREP_SST_OPT_USER" != "(null)" ]]; then
INNOEXTRA+=" --user=$WSREP_SST_OPT_USER"
usrst=1
fi
if [ -n "${WSREP_SST_OPT_PSWD:-}" ]; then
INNOEXTRA+=" --password=$WSREP_SST_OPT_PSWD"
elif [[ $usrst -eq 1 ]]; then
# Empty password, used for testing, debugging etc.
INNOEXTRA+=" --password="
fi
get_keys
check_extra
ttcmd="$tcmd"
# Add compression to the head of the stream (if specified)
if [[ -n "$scomp" ]]; then
tcmd=" $scomp | $tcmd "
fi
# Add encryption to the head of the stream (if specified)
if [[ $encrypt -eq 1 && -n "$ecmd_other" ]]; then
tcmd=" \$ecmd_other | $tcmd "
fi
if [[ $encrypt -eq 1 ]]; then
xbstreameopts=$xbstreameopts_other
fi
# Before the real SST,send the sst-info
wsrep_log_debug "Streaming SST meta-info file before SST"
FILE_TO_STREAM=$SST_INFO_FILE
send_data_from_donor_to_joiner "$donor_tmpdir" "${stagemsg}-sst-info"
if [[ -n $keyring ]]; then
# Verify that encryption is being used
# Do NOT send a keyring file without encryption
# Need encrypt >= 1
if [[ $encrypt -le 0 ]]; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "FATAL: An unencrypted channel is being used."
wsrep_log_error "Sending/using a keyring requires an encrypted channel."
wsrep_log_error "****************************************************** "
exit 22
fi
# joiner need to wait to receive the file.
sleep 3
cp $keyring $KEYRING_DIR/$XB_DONOR_KEYRING_FILE
wsrep_log_info "Streaming donor-keyring file before SST"
keyringbackupopt=" --keyring-file-data=${KEYRING_DIR}/${XB_DONOR_KEYRING_FILE} --server-id=$keyringsid "
FILE_TO_STREAM=$XB_DONOR_KEYRING_FILE
send_data_from_donor_to_joiner "${KEYRING_DIR}" "${stagemsg}-keyring"
fi
# Restore the transport commmand to its original state
tcmd="$ttcmd"
if [[ -n $progress ]]; then
get_footprint
tcmd="$pcmd | $tcmd"
elif [[ -n $rlimit ]]; then
adjust_progress
tcmd="$pcmd | $tcmd"
fi
wsrep_log_debug "Sleeping before data transfer for SST"
sleep 10
wsrep_log_info "Streaming the backup to joiner at ${REMOTEIP} ${SST_PORT:-4444}"
# Add compression to the head of the stream (if specified)
if [[ -n $scomp ]]; then
tcmd="$scomp | $tcmd"
fi
# Add encryption to the head of the stream (if specified)
if [[ $encrypt -eq 1 && -n "$ecmd" ]]; then
tcmd=" \$ecmd | $tcmd "
fi
if [[ $encrypt -eq 1 ]]; then
xbstreameopts=$xbstreameopts_sst
fi
set +e
timeit "${stagemsg}-SST" "$INNOBACKUP | $tcmd; RC=( "\${PIPESTATUS[@]}" )"
set -e
if [ ${RC[0]} -ne 0 ]; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "${INNOBACKUPEX_BIN} finished with error: ${RC[0]}. " \
"Check ${DATA}/innobackup.backup.log"
echo "--------------- innobackup.backup.log (START) --------------------" >&2
cat ${DATA}/innobackup.backup.log >&2
echo "--------------- innobackup.backup.log (END) ----------------------" >&2
wsrep_log_error "****************************************************** "
exit 22
elif [[ ${RC[$(( ${#RC[@]}-1 ))]} -eq 1 ]]; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "$tcmd finished with error: ${RC[1]}"
wsrep_log_error "****************************************************** "
exit 22
fi
else # BYPASS FOR IST
wsrep_log_info "Bypassing SST. Can work it through IST"
echo "continue" # now server can resume updating data
echo "1" > "${donor_tmpdir}/${IST_FILE}"
get_keys
# Add compression to the head of the stream (if specified)
if [[ -n "$scomp" ]]; then
tcmd=" $scomp | $tcmd "
fi
# Add encryption to the head of the stream (if specified)
if [[ $encrypt -eq 1 && -n "$ecmd_other" ]]; then
tcmd=" \$ecmd_other | $tcmd "
fi
if [[ $encrypt -eq 1 ]]; then
xbstreameopts=$xbstreameopts_other
fi
strmcmd+=" \${IST_FILE}"
FILE_TO_STREAM=$SST_INFO_FILE
send_data_from_donor_to_joiner "$donor_tmpdir" "${stagemsg}-IST"
fi
echo "done ${WSREP_SST_OPT_GTID}"
wsrep_log_debug "Total time on donor: $totime seconds"
elif [ "${WSREP_SST_OPT_ROLE}" = "joiner" ]
then
[[ -e $SST_PROGRESS_FILE ]] && wsrep_log_warning "Found a stale sst_in_progress file: $SST_PROGRESS_FILE"
[[ -n $SST_PROGRESS_FILE ]] && touch $SST_PROGRESS_FILE
ib_home_dir=$(parse_cnf mysqld innodb-data-home-dir "")
ib_log_dir=$(parse_cnf mysqld innodb-log-group-home-dir "")
ib_undo_dir=$(parse_cnf mysqld innodb-undo-directory "")
stagemsg="Joiner-Recv"
nthreads=1
MODULE="xtrabackup_sst"
rm -f "${DATA}/${IST_FILE}"
# May need xtrabackup_checkpoints later on
rm -f ${DATA}/xtrabackup_binary ${DATA}/xtrabackup_galera_info ${DATA}/xtrabackup_logfile
if [[ -n $KEYRING_DIR ]]; then
rm -f "${KEYRING_DIR}/${XB_DONOR_KEYRING_FILE}"
fi
wait_for_listen ${WSREP_SST_OPT_HOST} ${WSREP_SST_OPT_PORT:-4444} ${MODULE} &
trap sig_joiner_cleanup HUP PIPE INT TERM
trap cleanup_joiner EXIT
if [[ -n $progress ]]; then
adjust_progress
tcmd+=" | $pcmd"
fi
get_keys
if [[ $encrypt -eq 1 && -n "$ecmd_other" ]]; then
strmcmd=" \$ecmd_other | $strmcmd"
fi
if [[ -n $sdecomp ]]; then
strmcmd=" $sdecomp | $strmcmd"
fi
if [[ $encrypt -eq 1 ]]; then
xbstreameopts=$xbstreameopts_other
fi
initialize_tmpdir
STATDIR=$(mktemp -p "${tmpdirbase}" -dt joiner_XXXX)
sst_file_info_path="${STATDIR}/${SST_INFO_FILE}"
recv_data_from_donor_to_joiner $STATDIR "${stagemsg}-sst-info" $stimeout -2
#
# Determine which file was received, the GTID or the SST_INFO
#
if [[ -r "${STATDIR}/${SST_INFO_FILE}" ]]; then
#
# Extract information from the sst-info file that was just received
#
XB_GTID_INFO_FILE_PATH="${STATDIR}/${XB_GTID_INFO_FILE}"
parse_sst_info "$sst_file_info_path" sst galera-gtid "" > "$XB_GTID_INFO_FILE_PATH"
DONOR_BINLOGNAME=$(parse_sst_info "$sst_file_info_path" sst binlog-name "")
DONOR_MYSQL_VERSION=$(parse_sst_info "$sst_file_info_path" sst mysql-version "")
elif [[ -r "${STATDIR}/${XB_GTID_INFO_FILE}" ]]; then
#
# For compatibility, we have received the gtid file
#
XB_GTID_INFO_FILE_PATH="${STATDIR}/${XB_GTID_INFO_FILE}"
DONOR_BINLOGNAME=""
DONOR_MYSQL_VERSION=""
else
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "Did not receive expected file from donor: '${SST_INFO_FILE}' or '${XB_GTID_INFO_FILE}'"
wsrep_log_error "****************************************************** "
exit 32
fi
if [ ! -r "${STATDIR}/${IST_FILE}" ]
then
if [[ -n "$DONOR_MYSQL_VERSION" ]]; then
local_version_str=""
donor_version_str=""
# Truncate the version numbers (we want the major.minor version like "5.6", not "5.6.35-...")
local_version_str=$(expr match "$MYSQL_VERSION" '\([0-9]\+\.[0-9]\+\)')
donor_version_str=$(expr match "$DONOR_MYSQL_VERSION" '\([0-9]\+\.[0-9]\+\)')
# Is this node's pxc version < donor's pxc version?
if ! check_for_version $local_version_str $donor_version_str; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "FATAL: PXC is receiving an SST from a node with a higher version."
wsrep_log_error "This node's PXC version is $local_version_str. The donor's PXC version is $donor_version_str."
wsrep_log_error "Upgrade this node before joining the cluster."
wsrep_log_error "****************************************************** "
exit 2
fi
# Is the donor's pxc version < this node's pxc version?
if ! check_for_version $donor_version_str $local_version_str; then
wsrep_log_warning "WARNING: PXC is receiving an SST from a node with a lower version."
wsrep_log_warning "This node's PXC version is $local_version_str. The donor's PXC version is $donor_version_str."
wsrep_log_warning "Run mysql_upgrade in non-cluster (standalone mode) to upgrade."
wsrep_log_warning "Check the upgrade process here:"
wsrep_log_warning " https://www.percona.com/doc/percona-xtradb-cluster/LATEST/howtos/upgrade_guide.html"
fi
fi
# server-id is already part of backup-my.cnf so avoid appending it.
# server-id is the id of the node that is acting as donor and not joiner node.
if [[ -n $keyring ]]; then
# joiner needs to wait to receive the file.
sleep 3
# Ensure that the destination directory exists and is R/W by us
if [[ ! -d "$KEYRING_DIR" || ! -r "$KEYRING_DIR" || ! -w "$KEYRING_DIR" ]]; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "FATAL: Cannot acccess the keyring directory"
wsrep_log_error " $KEYRING_DIR"
wsrep_log_error "It must already exist and be readable/writeable by MySQL"
wsrep_log_error "****************************************************** "
exit 22
fi
XB_DONOR_KEYRING_FILE_PATH="${KEYRING_DIR}/${XB_DONOR_KEYRING_FILE}"
recv_data_from_donor_to_joiner "${KEYRING_DIR}" "${stagemsg}-keyring" 0 2
keyringapplyopt=" --keyring-file-data=$XB_DONOR_KEYRING_FILE_PATH "
wsrep_log_info "donor keyring received at: '${XB_DONOR_KEYRING_FILE_PATH}'"
else
# There shouldn't be a keyring file, since we do not have a keyring here
# This will error out if a keyring file IS found
XB_DONOR_KEYRING_FILE_PATH="${KEYRING_DIR}/${XB_DONOR_KEYRING_FILE}"
recv_data_from_donor_to_joiner "${KEYRING_DIR}" "${stagemsg}-keyring" 5 -1
if [[ -r "${XB_DONOR_KEYRING_FILE_PATH}" ]]; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "FATAL: xtrabackup found '${XB_DONOR_KEYRING_FILE_PATH}'"
wsrep_log_error "The joiner is not using a keyring file but the donor has sent"
wsrep_log_error "a keyring file. Please check your configuration to ensure that"
wsrep_log_error "both sides are using a keyring file"
wsrep_log_error "****************************************************** "
exit 32
fi
fi
if ! ps -p ${WSREP_SST_OPT_PARENT} &>/dev/null
then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "Parent mysqld process (PID:${WSREP_SST_OPT_PARENT}) terminated unexpectedly."
wsrep_log_error "****************************************************** "
exit 32
fi
get_stream
if [[ $encrypt -eq 1 && -n "$ecmd" ]]; then
strmcmd=" \$ecmd | $strmcmd"
fi
if [[ -n $sdecomp ]]; then
strmcmd=" $sdecomp | $strmcmd"
fi
if [[ $encrypt -eq 1 ]]; then
xbstreameopts=$xbstreameopts_sst
fi
# For compatibility, if the tmpdir is not specified, then use
# the datadir to hold the .sst directory
if [[ -z "$(parse_cnf sst tmpdir "")" ]]; then
if [[ -d ${DATA}/.sst ]]; then
wsrep_log_info "WARNING: Stale temporary SST directory: ${DATA}/.sst from previous state transfer. Removing"
rm -rf ${DATA}/.sst
fi
mkdir -p ${DATA}/.sst
JOINER_SST_DIR=$DATA/.sst
else
JOINER_SST_DIR=$(mktemp -p "${tmpdirbase}" -dt sst_XXXX)
fi
(recv_data_from_donor_to_joiner "$JOINER_SST_DIR" "${stagemsg}-SST" 0 0) &
jpid=$!
wsrep_log_info "Proceeding with SST........."
wsrep_log_debug "Cleaning the existing datadir and innodb-data/log directories"
# Avoid emitting the find command output to log file. It just fill the
# with ever increasing number of files and achieve nothing.
find $ib_home_dir $ib_log_dir $ib_undo_dir $DATA -mindepth 1 -regex $cpat -prune -o -exec rm -rfv {} 1>/dev/null \+
# Clean the binlog dir (if it's explicitly specified)
# By default it'll be in the datadir
tempdir=$(parse_cnf mysqld log-bin "")
if [[ -n "$tempdir" ]]; then
binlog_dir=$(dirname "$tempdir")
binlog_file=$(basename "$tempdir")
if [[ -n ${binlog_dir:-} && "$binlog_dir" != '.' && "$binlog_dir" != "$DATA" ]];then
pattern="$binlog_dir/$binlog_file\.[0-9]+$"
wsrep_log_debug "Cleaning the binlog directory $binlog_dir as well"
find "$binlog_dir" -maxdepth 1 -type f -regex $pattern -exec rm -fv {} 1>&2 \+ || true
rm -f $binlog_dir/*.index || true
fi
fi
TDATA=$DATA
DATA=$JOINER_SST_DIR
XB_GTID_INFO_FILE_PATH="${DATA}/${XB_GTID_INFO_FILE}"
wsrep_log_info "............Waiting for SST streaming to complete!"
wait $jpid
get_proc
if [[ ! -s ${DATA}/xtrabackup_checkpoints ]]; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "xtrabackup_checkpoints missing. xtrabackup/SST failed on DONOR. Check DONOR log"
wsrep_log_error "****************************************************** "
exit 2
fi
# Rebuild indexes for compact backups
if grep -q 'compact = 1' ${DATA}/xtrabackup_checkpoints; then
wsrep_log_info "Index compaction detected"
rebuild=1
fi
if [[ $rebuild -eq 1 ]]; then
nthreads=$(parse_cnf xtrabackup rebuild-threads $nproc)
wsrep_log_debug "Rebuilding during prepare with $nthreads threads"
rebuildcmd="--rebuild-indexes --rebuild-threads=$nthreads"
fi
if test -n "$(find ${DATA} -maxdepth 1 -type f -name '*.qp' -print -quit)"; then
wsrep_log_info "Compressed qpress files found"
if [[ ! -x `which qpress` ]]; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "qpress not found in path: $PATH"
wsrep_log_error "****************************************************** "
exit 22
fi
if [[ -n $progress ]] && pv --help | grep -q 'line-mode'; then
count=$(find "${DATA}" -type f -name '*.qp' | wc -l)
count=$(( count*2 ))
if pv --help | grep -q FORMAT; then
pvopts="-f -s $count -l -N Decompression -F '%N => Rate:%r Elapsed:%t %e Progress: [%b/$count]'"
else
pvopts="-f -s $count -l -N Decompression"
fi
pcmd="pv $pvopts"
adjust_progress
dcmd="$pcmd | xargs -n 2 qpress -T${nproc}d"
else
dcmd="xargs -n 2 qpress -T${nproc}d"
fi
# Decompress the qpress files
wsrep_log_debug "Decompression with $nproc threads"
timeit "Joiner-Decompression" "find ${DATA} -type f -name '*.qp' -printf '%p\n%h\n' | $dcmd"
extcode=$?
if [[ $extcode -eq 0 ]]; then
wsrep_log_debug "Removing qpress files after decompression"
find "${DATA}" -type f -name '*.qp' -delete
if [[ $? -ne 0 ]]; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "Something went wrong with deletion of qpress files. Investigate"
wsrep_log_error "****************************************************** "
fi
else
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "Decompression failed. Exit code: $extcode"
wsrep_log_error "****************************************************** "
exit 22
fi
fi
if [[ -n "$WSREP_SST_OPT_BINLOG" && -n "$DONOR_BINLOGNAME" ]]; then
binlog_dir=$(dirname "$WSREP_SST_OPT_BINLOG")
binlog_file=$(basename "$WSREP_SST_OPT_BINLOG")
donor_binlog_file=$DONOR_BINLOGNAME
# rename the donor binlog to the name of the binlogs on the joiner
if [[ "$binlog_file" != "$donor_binlog_file" ]]; then
pushd "$DATA" &>/dev/null
for f in $donor_binlog_file.*; do
if [[ ! -e "$f" ]]; then continue; fi
f_new=$(echo $f | sed "s/$donor_binlog_file/$binlog_file/")
mv "$f" "$f_new" 2>/dev/null || true
done
popd &> /dev/null
fi
# To avoid comparing data directory and BINLOG_DIRNAME
mv $DATA/${binlog_file}.* "$binlog_dir"/ 2>/dev/null || true
pushd "$binlog_dir" &>/dev/null
for bfiles in $binlog_file.*; do
if [[ ! -e "$bfiles" ]]; then continue; fi
echo "${binlog_dir}/${bfiles}" >> "${binlog_file}.index"
done
popd &> /dev/null
fi
wsrep_log_info "Preparing the backup at ${DATA}"
timeit "Xtrabackup prepare stage" "$INNOAPPLY"
if [ $? -ne 0 ];
then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "${INNOBACKUPEX_BIN} apply finished with errors." \
"Check ${DATA}/innobackup.prepare.log"
echo "--------------- innobackup.prepare.log (START) --------------------" >&2
cat "${DATA}/innobackup.prepare.log" >&2
echo "--------------- innobackup.prepare.log (END) --------------------" >&2
wsrep_log_error "****************************************************** "
exit 22
fi
XB_GTID_INFO_FILE_PATH="${TDATA}/${XB_GTID_INFO_FILE}"
set +e
rm "$TDATA/innobackup.prepare.log" "$TDATA/innobackup.move.log" 2> /dev/null
set -e
wsrep_log_info "Moving the backup to ${TDATA}"
timeit "Xtrabackup move stage" "$INNOMOVE"
if [[ $? -eq 0 ]]; then
# Did we receive a keyring file?
if [[ -r "${XB_DONOR_KEYRING_FILE_PATH}" ]]; then
wsrep_log_info "Moving sst keyring into place: moving $XB_DONOR_KEYRING_FILE_PATH to $keyring"
mv "${XB_DONOR_KEYRING_FILE_PATH}" "$keyring"
wsrep_log_debug "Keyring move successful"
fi
wsrep_log_debug "Move successful, removing ${DATA}"
rm -rf "$DATA"
DATA=${TDATA}
else
if [[ -r "${XB_DONOR_KEYRING_FILE_PATH}" ]]; then
rm -f "${XB_DONOR_KEYRING_FILE_PATH}"
fi
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "Move failed, keeping ${DATA} for further diagnosis" \
"Check ${DATA}/innobackup.move.log for details"
echo "--------------- innobackup.move.log (START) --------------------" >&2
cat "${DATA}/innobackup.move.log" >&2
echo "--------------- innobackup.move.log (END) --------------------" >&2
wsrep_log_error "****************************************************** "
exit 22
fi
else
wsrep_log_info "${IST_FILE} received from donor: Running IST"
fi
if [[ ! -r ${XB_GTID_INFO_FILE_PATH} ]]; then
wsrep_log_error "******************* FATAL ERROR ********************** "
wsrep_log_error "SST magic file ${XB_GTID_INFO_FILE_PATH} not found/readable"
wsrep_log_error "****************************************************** "
exit 2
fi
wsrep_log_info "Galera co-ords from recovery: $(cat "${XB_GTID_INFO_FILE_PATH}")"
cat "${XB_GTID_INFO_FILE_PATH}" # output UUID:seqno
wsrep_log_debug "Total time on joiner: $totime seconds"
fi
exit 0
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