This file is indexed.

postinst is in percona-xtradb-cluster-server-5.6 5.6.21-25.8-0ubuntu3.

This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
#!/bin/bash
set -e
. /usr/share/debconf/confmodule

if [ -n "$DEBIAN_SCRIPT_DEBUG" ]; then set -v -x; DEBIAN_SCRIPT_TRACE=1; fi
${DEBIAN_SCRIPT_TRACE:+ echo "#42#DEBUG# RUNNING $0 $*" 1>&2 }
 
export PATH=$PATH:/sbin:/usr/sbin:/bin:/usr/bin

# This command can be used as pipe to syslog. With "-s" it also logs to stderr.
ERR_LOGGER="logger -p daemon.err -t mysqld_safe -i"

invoke() {
  if [ -x /usr/sbin/invoke-rc.d ]; then
    invoke-rc.d mysql $1
  else
    /etc/init.d/mysql $1
  fi
}

MYSQL_BOOTSTRAP="/usr/sbin/mysqld --bootstrap --user=mysql --skip-grant-tables"

test_mysql_access() {
       mysql --no-defaults -u root -h localhost </dev/null >/dev/null 2>&1
}

# call with $1 = "online" to connect to the server, otherwise it bootstraps
set_mysql_rootpw() {
       # forget we ever saw the password.  don't use reset to keep the seen status
       db_set mysql-server/root_password ""
       db_set mysql-server/root_password_again ""

       tfile=`mktemp`
       if [ ! -f "$tfile" ]; then
               return 1
       fi

       # this avoids us having to call "test" or "[" on $rootpw
       cat << EOF > $tfile
USE mysql;
UPDATE user SET password=PASSWORD("$rootpw") WHERE user='root';
FLUSH PRIVILEGES;
EOF
       if grep -q 'PASSWORD("")' $tfile; then
               retval=0
       elif [ "$1" = "online" ]; then
               mysql --no-defaults -u root -h localhost <$tfile >/dev/null
               retval=$?
       else
               $MYSQL_BOOTSTRAP <$tfile
               retval=$?
       fi
       rm -f $tfile
       return $retval
}

# This is necessary because mysql_install_db removes the pid file in /var/run
# and because changed configuration options should take effect immediately.
# In case the server wasn't running at all it should be ok if the stop
# script fails. I can't tell at this point because of the cleaned /var/run.
set +e; invoke stop; set -e
    
case "$1" in
  configure)
    mysql_datadir=/usr/share/mysql
    mysql_statedir=/var/lib/percona-xtradb-cluster
    mysql_rundir=/var/run/mysqld
    mysql_logdir=/var/log
    mysql_cfgdir=/etc/mysql
    mysql_newlogdir=/var/log/mysql
    mysql_upgradedir=/var/lib/mysql-upgrade

    # New packaging paradigm for my.cnf as of Dec-2014 for sharing mysql
    # variants in Ubuntu.
    /usr/share/mysql-common/configure-symlinks install percona-xtradb-cluster "$mysql_cfgdir/percona-xtradb-cluster.cnf"

    # first things first, if the following symlink exists, it is a preserved
    # copy the old data dir from a mysql upgrade that would have otherwise
    # been replaced by an empty mysql dir.  this should restore it.
    for dir in DATADIR LOGDIR; do
        if [ "$dir" = "DATADIR" ]; then targetdir=$mysql_statedir; else targetdir=$mysql_newlogdir; fi
        savelink="$mysql_upgradedir/$dir.link"
        if [ -L "$savelink" ]; then
            # If the targetdir was a symlink before we upgraded it is supposed
            # to be either still be present or not existing anymore now.
            if [ -L "$targetdir" ]; then
                rm "$savelink"
            elif [ ! -d "$targetdir" ]; then
                mv "$savelink" "$targetdir"
            else
                # this should never even happen, but just in case...
                mysql_tmp=`mktemp -d -t mysql-symlink-restore-XXXXXX`
                echo "this is very strange!  see $mysql_tmp/README..." >&2
                mv "$targetdir" "$mysql_tmp"
                cat << EOF > "$mysql_tmp/README"

if you're reading this, it's most likely because you had replaced /var/lib/mysql
with a symlink, then upgraded to a new version of mysql, and then dpkg
removed your symlink (see #182747 and others).  the mysql packages noticed
that this happened, and as a workaround have restored it.  however, because
/var/lib/mysql seems to have been re-created in the meantime, and because
we don't want to rm -rf something we don't know as much about, we're going
to leave this unexpected directory here.  if your database looks normal,
and this is not a symlink to your database, you should be able to blow
this all away.

EOF
            fi
        fi
	rmdir $mysql_upgradedir 2>/dev/null || true
    done
    
    # Ensure the existence and right permissions for the database and
    # log files.
    if [ ! -d "$mysql_statedir"       -a ! -L "$mysql_statedir"       ]; then mkdir "$mysql_statedir"; fi
    if [ ! -d "$mysql_statedir/mysql" -a ! -L "$mysql_statedir/mysql" ]; then mkdir "$mysql_statedir/mysql"; fi
    if [ ! -d "$mysql_newlogdir"      -a ! -L "$mysql_newlogdir"      ]; then mkdir "$mysql_newlogdir"; fi
    # When creating an ext3 jounal on an already mounted filesystem like e.g.
    # /var/lib/mysql, you get a .journal file that is not modifyable by chown.
    # The mysql_datadir must not be writable by the mysql user under any
    # circumstances as it contains scripts that are executed by root.
    set +e
    chown -R 0:0 $mysql_datadir
    chown -R mysql $mysql_statedir
    chmod 700 $mysql_statedir $mysql_statedir/mysql
    if [ ! -d "$mysql_rundir" ]; then mkdir "$mysql_rundir"; fi
    chown -R mysql $mysql_rundir
    chown -R mysql:adm $mysql_newlogdir;	chmod 2750 $mysql_newlogdir;
    for i in log err; do
      touch             $mysql_logdir/mysql.$i
      chown mysql:adm   $mysql_logdir/mysql.$i
      chmod 0640        $mysql_logdir/mysql.$i
    done
    set -e

    # This is important to avoid dataloss when there is a removed
    # percona-xtradb-cluster-server version from Woody lying around which used the same
    # data directory and then somewhen gets purged by the admin.
    db_set percona-xtradb-cluster-server/postrm_remove_database false || true

    # To avoid downgrades.
    touch $mysql_statedir/debian-5.6.flag

    # initiate databases. Output is not allowed by debconf :-(
    # Debian: beware of the bashisms... 
    # Debian: can safely run on upgrades with existing databases 
    set +e
    /usr//bin/mysql_install_db --user=mysql --rpm 2>&1 |
        $ERR_LOGGER
    if [ "$?" != "0" ]; then
      echo "ATTENTION: An error has occured. More info is in the syslog!"
    fi
    set -e
    
    ## On every reconfiguration the maintenance user is recreated.
    #
    # - It is easier to regenerate the password every time but as people
    #   use fancy rsync scripts and file alteration monitors, the existing
    #   password is used and existing files not touched.
    # - The mysqld statement is like that in mysql_install_db because the
    #   server is not already running. This has some implications:
    # 	- The amount of newlines and semicolons in the query is important!
    #   - GRANT is not possible with --skip-grant-tables and "INSERT
    #     (user,host..) VALUES" is not --ansi compliant
    # - The echo is just for readability. ash's buildin has no "-e" so use /bin/echo.
    # - The Super_priv, Show_db_priv, Create_tmp_table_priv and Lock_tables_priv
    #   may not be present as old Woody 3.23 databases did not have it and the
    #   admin might not already have run mysql_upgrade which adds them.
    #   As the binlog cron scripts to need at least the Super_priv, I do first
    #   the old query which always succeeds and then the new which may or may not.

    # recreate the credentials file if not present or without mysql_upgrade stanza
    dc=$mysql_cfgdir/debian.cnf; 
    if [ -e "$dc" -a -n "`fgrep mysql_upgrade $dc 2>/dev/null`" ]; then
        pass="`sed -n 's/^[     ]*password *= *// p' $dc | head -n 1`"
    else
	pass=`perl -e 'print map{("a".."z","A".."Z",0..9)[int(rand(62))]}(1..16)'`;
        if [ ! -d "$mysql_cfgdir" ]; then install -o 0 -g 0 -m 0755 -d $mysql_cfgdir; fi
        umask 066
        cat /dev/null > $dc
        umask 022
        echo "# Automatically generated for Debian scripts. DO NOT TOUCH!" >>$dc
        echo "[client]"                                                    >>$dc
        echo "host     = localhost"                                        >>$dc
        echo "user     = debian-sys-maint"                                 >>$dc
        echo "password = $pass"                                            >>$dc
        echo "socket   = $mysql_rundir/mysqld.sock"                        >>$dc
        echo "[mysql_upgrade]"                                             >>$dc
        echo "host     = localhost"                                        >>$dc
        echo "user     = debian-sys-maint"                                 >>$dc
        echo "password = $pass"                                            >>$dc
        echo "socket   = $mysql_rundir/mysqld.sock"                        >>$dc
        echo "basedir  = /usr"                                             >>$dc
    fi
    # If this dir chmod go+w then the admin did it. But this file should not.
    chown 0:0 $dc
    chmod 0600 $dc

    # update privilege tables
    password_column_fix_query=`echo -e \
        "USE mysql\n" \
        "ALTER TABLE user CHANGE Password Password char(41) character set latin1 collate latin1_bin DEFAULT '' NOT NULL"`;
    replace_query=`echo -e \
        "USE mysql;\n" \
        "REPLACE INTO user SET " \
        "  host='localhost', user='debian-sys-maint', password=password('$pass'), " \
        "  Select_priv='Y', Insert_priv='Y', Update_priv='Y', Delete_priv='Y', " \
        "  Create_priv='Y', Drop_priv='Y', Reload_priv='Y', Shutdown_priv='Y', " \
        "  Process_priv='Y',  File_priv='Y', Grant_priv='Y', References_priv='Y', " \
        "  Index_priv='Y', Alter_priv='Y', Super_priv='Y', Show_db_priv='Y', " \
        "  Create_tmp_table_priv='Y', Lock_tables_priv='Y', Execute_priv='Y', " \
        "  Repl_slave_priv='Y', Repl_client_priv='Y', Create_view_priv='Y', " \
        "  Show_view_priv='Y', Create_routine_priv='Y', Alter_routine_priv='Y', " \
        "  Create_user_priv='Y', Event_priv='Y', Trigger_priv='Y', Create_tablespace_priv='Y', " \
        "  ssl_cipher='', x509_issuer='', x509_subject=''; " `
    fix_privs=`echo -e \
        "USE mysql;\n" \
        "ALTER TABLE user ADD column Create_view_priv enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N'; " \
        "ALTER TABLE user ADD column Show_view_priv enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N'; " \
        "ALTER TABLE user ADD column Create_routine_priv enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N'; " \
        "ALTER TABLE user ADD column Alter_routine_priv enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N'; " \
        "ALTER TABLE user ADD column Create_user_priv enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N'; " \
        "ALTER TABLE user ADD column Event_priv enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N'; " \
        "ALTER TABLE user ADD column Trigger_priv enum('N','Y') CHARACTER SET utf8 NOT NULL DEFAULT 'N'; " `

    db_get mysql-server/root_password && rootpw="$RET"
    if ! set_mysql_rootpw; then
        password_error="yes"
    fi

    echo "$replace_query"                                    | $MYSQL_BOOTSTRAP 2>&1 | $ERR_LOGGER
  ;;

  abort-upgrade|abort-remove|abort-configure)
  ;;

  *)
    echo "postinst called with unknown argument $1" 1>&2
    exit 1
  ;;
esac

# here we check to see if we can connect as root without a password
# this should catch upgrades from previous versions where the root
# password was not set.  if there is a password, or if the connection
# fails for any other reason, nothing happens.

if [ "$1" = "configure" ]; then
       if test_mysql_access; then
               db_input medium mysql-server/root_password || true
               db_go
               db_get mysql-server/root_password && rootpw="$RET"

               if ! set_mysql_rootpw "online"; then
                       password_error="yes"
               fi
       fi

       if [ "$password_error" = "yes" ]; then
               db_input high mysql-server/error_setting_password || true
               db_go
       fi

fi

db_stop # in case invoke failes

# Automatically added by dh_installinit
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ]; then
	if [ -x "/etc/init.d/mysql" ]; then
		update-rc.d mysql defaults 19 21 >/dev/null
	fi
	if [ -x "/etc/init.d/mysql" ] || [ -e "/etc/init/mysql.conf" ]; then
		invoke-rc.d mysql start || exit $?
	fi
fi
# End automatically added section


exit 0