/usr/lib/python2.7/dist-packages/cts/CIB.py is in pacemaker 1.1.10+git20130802-1ubuntu2.4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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'''
__copyright__='''
Author: Andrew Beekhof <abeekhof@suse.de>
Copyright (C) 2008 Andrew Beekhof
'''
from UserDict import UserDict
import sys, time, types, syslog, os, struct, string, signal, traceback, warnings, socket
from cts.CTSvars import *
from cts.CTS import ClusterManager
class CibBase:
cts_cib = None
version = "unknown"
feature_set = "unknown"
Factory = None
def __init__(self, CM, factory, tmpfile=None):
self.CM = CM
self.Factory = factory
if not tmpfile:
warnings.filterwarnings("ignore")
tmpfile=os.tmpnam()
warnings.resetwarnings()
self.Factory.tmpfile = tmpfile
def version(self):
return self.version
def NextIP(self):
fields = string.split(self.CM.Env["IPBase"], '.')
fields[3] = str(int(fields[3])+1)
ip = string.join(fields, '.')
self.CM.Env["IPBase"] = ip
return ip
class CibXml:
def __init__(self, Factory, tag, _id, **kwargs):
self.tag = tag
self.name = _id
self.kwargs = kwargs
self.children = []
self.Factory = Factory
def add_child(self, child):
self.children.append(child)
def __setitem__(self, key, value):
self.kwargs[key] = value
def show(self):
text = '''<%s''' % self.tag
if self.name:
text += ''' id="%s"''' % (self.name)
for k in self.kwargs.keys():
text += ''' %s="%s"''' % (k, self.kwargs[k])
if not self.children:
text += '''/>'''
return text
text += '''>'''
for c in self.children:
text += c.show()
text += '''</%s>''' % self.tag
return text
def _run(self, operation, xml, section="all", options=""):
self.Factory.debug("Writing out %s" % self.name)
fixed = "HOME=/root CIB_file="+self.Factory.tmpfile
fixed += " cibadmin --%s --scope %s %s --xml-text '%s'" % (operation, section, options, xml)
rc = self.Factory.rsh(self.Factory.target, fixed)
if rc != 0:
self.Factory.log("Configure call failed: "+fixed)
sys.exit(1)
class FencingTopology(CibXml):
def __init__(self, Factory):
CibXml.__init__(self, Factory, "fencing-topology", None)
def level(self, index, node, devices):
self.add_child(CibXml(self.Factory, "fencing-level", "cts-%s.%d" % (node, index), target=node, index=index, devices=devices))
def commit(self):
self._run("create", self.show(), "configuration", "--allow-create")
class Option(CibXml):
def __init__(self, Factory, name=None, value=None, section="cib-bootstrap-options"):
CibXml.__init__(self, Factory, "cluster_property_set", section)
if name and value:
self.add_child(CibXml(Factory, "nvpair", "cts-%s" % name, name=name, value=value))
def __setitem__(self, key, value):
self.add_child(CibXml(self.Factory, "nvpair", "cts-%s" % key, name=key, value=value))
def commit(self):
self._run("modify", self.show(), "crm_config", "--allow-create")
class Expression(CibXml):
def __init__(self, Factory, name, attr, op, value=None):
CibXml.__init__(self, Factory, "expression", name, attribute=attr, operation=op)
if value:
self["value"] = value
class Rule(CibXml):
def __init__(self, Factory, name, score, op="and", expr=None):
CibXml.__init__(self, Factory, "rule", "%s" % name)
self["boolean-op"] = op
self["score"] = score
if expr:
self.add_child(expr)
class Resource(CibXml):
def __init__(self, Factory, name, rtype, standard, provider=None):
CibXml.__init__(self, Factory, "native", name)
self.rtype = rtype
self.standard = standard
self.provider = provider
self.op=[]
self.meta={}
self.param={}
self.scores={}
self.needs={}
self.coloc={}
if self.standard == "ocf" and not provider:
self.provider = "heartbeat"
elif self.standard == "lsb":
self.provider = None
def __setitem__(self, key, value):
self.add_param(key, value)
def add_op(self, name, interval, **kwargs):
self.op.append(
CibXml(self.Factory, "op", "%s-%s" % (name, interval), name=name, interval=interval, **kwargs))
def add_param(self, name, value):
self.param[name] = value
def add_meta(self, name, value):
self.meta[name] = value
def prefer(self, node, score="INFINITY", rule=None):
if not rule:
rule = Rule(self.Factory, "prefer-%s-r" % node, score,
expr=Expression(self.Factory, "prefer-%s-e" % node, "#uname", "eq", node))
self.scores[node] = rule
def after(self, resource, kind="Mandatory", first="start", then="start", **kwargs):
kargs = kwargs.copy()
kargs["kind"] = kind
if then:
kargs["first-action"] = "start"
kargs["then-action"] = then
if first:
kargs["first-action"] = first
self.needs[resource] = kargs
def colocate(self, resource, score="INFINITY", role=None, withrole=None, **kwargs):
kargs = kwargs.copy()
kargs["score"] = score
if role:
kargs["rsc-role"] = role
if withrole:
kargs["with-rsc-role"] = withrole
self.coloc[resource] = kargs
def constraints(self):
text = "<constraints>"
for k in self.scores.keys():
text += '''<rsc_location id="prefer-%s" rsc="%s">''' % (k, self.name)
text += self.scores[k].show()
text += '''</rsc_location>'''
for k in self.needs.keys():
text += '''<rsc_order id="%s-after-%s" first="%s" then="%s"''' % (self.name, k, k, self.name)
kargs = self.needs[k]
for kw in kargs.keys():
text += ''' %s="%s"''' % (kw, kargs[kw])
text += '''/>'''
for k in self.coloc.keys():
text += '''<rsc_colocation id="%s-with-%s" rsc="%s" with-rsc="%s"''' % (self.name, k, self.name, k)
kargs = self.coloc[k]
for kw in kargs.keys():
text += ''' %s="%s"''' % (kw, kargs[kw])
text += '''/>'''
text += "</constraints>"
return text
def show(self):
text = '''<primitive id="%s" class="%s" type="%s"''' % (self.name, self.standard, self.rtype)
if self.provider:
text += ''' provider="%s"''' % (self.provider)
text += '''>'''
if len(self.meta) > 0:
text += '''<meta_attributes id="%s-meta">''' % self.name
for p in self.meta.keys():
text += '''<nvpair id="%s-%s" name="%s" value="%s"/>''' % (self.name, p, p, self.meta[p])
text += '''</meta_attributes>'''
if len(self.param) > 0:
text += '''<instance_attributes id="%s-params">''' % self.name
for p in self.param.keys():
text += '''<nvpair id="%s-%s" name="%s" value="%s"/>''' % (self.name, p, p, self.param[p])
text += '''</instance_attributes>'''
if len(self.op) > 0:
text += '''<operations>'''
for o in self.op:
key = o.name
o.name = "%s-%s" % (self.name, key)
text += o.show()
o.name = key
text += '''</operations>'''
text += '''</primitive>'''
return text
def commit(self):
self._run("create", self.show(), "resources")
self._run("modify", self.constraints())
class Group(Resource):
def __init__(self, Factory, name):
Resource.__init__(self, Factory, name, None, None)
self.tag = "group"
def __setitem__(self, key, value):
self.add_meta(key, value)
def show(self):
text = '''<%s id="%s">''' % (self.tag, self.name)
if len(self.meta) > 0:
text += '''<meta_attributes id="%s-meta">''' % self.name
for p in self.meta.keys():
text += '''<nvpair id="%s-%s" name="%s" value="%s"/>''' % (self.name, p, p, self.meta[p])
text += '''</meta_attributes>'''
for c in self.children:
text += c.show()
text += '''</%s>''' % self.tag
return text
class Clone(Group):
def __init__(self, Factory, name, child=None):
Group.__init__(self, Factory, name)
self.tag = "clone"
if child:
self.add_child(child)
def add_child(self, resource):
if not self.children:
self.children.append(resource)
else:
self.Factory.log("Clones can only have a single child. Ignoring %s" % resource.name)
class Master(Clone):
def __init__(self, Factory, name, child=None):
Clone.__init__(self, Factory, name, child)
self.tag = "master"
class CIB11(CibBase):
feature_set = "3.0"
version = "pacemaker-1.1"
def _show(self, command=""):
output = ""
(rc, result) = self.Factory.rsh(self.Factory.target, "HOME=/root CIB_file="+self.Factory.tmpfile+" cibadmin -Ql "+command, None, )
for line in result:
output += line
self.Factory.debug("Generated Config: "+line)
return output
def NewIP(self, name=None, standard="ocf"):
ip = self.NextIP()
if not name:
name = "r"+ip
r = Resource(self.Factory, name, "IPaddr2", standard)
r["ip"] = ip
r["cidr_netmask"] = "32"
r.add_op("monitor", "5s")
return r
def install(self, target):
old = self.Factory.tmpfile
# Force a rebuild
self.cts_cib = None
self.Factory.tmpfile = CTSvars.CRM_CONFIG_DIR+"/cib.xml"
self.contents(target)
self.Factory.rsh(self.Factory.target, "chown "+CTSvars.CRM_DAEMON_USER+" "+self.Factory.tmpfile)
self.Factory.tmpfile = old
def contents(self, target=None):
# fencing resource
if self.cts_cib:
return self.cts_cib
if target:
self.Factory.target = target
self.Factory.rsh(self.Factory.target, "HOME=/root cibadmin --empty %s > %s" % (self.version, self.Factory.tmpfile))
#cib_base = self.cib_template % (self.feature_set, self.version, ''' remote-tls-port='9898' remote-clear-port='9999' ''')
nodelist = ""
self.num_nodes = 0
for node in self.CM.Env["nodes"]:
nodelist += node + " "
self.num_nodes = self.num_nodes + 1
no_quorum = "stop"
if self.num_nodes < 3:
no_quorum = "ignore"
self.Factory.log("Cluster only has %d nodes, configuring: no-quroum-policy=ignore" % self.num_nodes)
# Fencing resource
# Define first so that the shell doesn't reject every update
if self.CM.Env["DoFencing"]:
st = Resource(self.Factory, "Fencing", self.CM.Env["stonith-type"], "stonith")
# Set a threshold for unreliable stonith devices such as the vmware one
st.add_meta("migration-threshold", "5")
st.add_op("monitor", "120s", timeout="120s")
st.add_op("stop", "0", timeout="60s")
st.add_op("start", "0", timeout="60s")
entries = string.split(self.CM.Env["stonith-params"], ',')
for entry in entries:
(name, value) = string.split(entry, '=')
if name == "hostlist" and value == "all":
value = string.join(self.CM.Env["nodes"], " ")
elif name == "pcmk_host_list" and value == "all":
value = string.join(self.CM.Env["nodes"], " ")
st[name] = value
st.commit()
# Test advanced fencing logic
if True:
stf_nodes = []
stt_nodes = []
# Create the levels
stl = FencingTopology(self.Factory)
for node in self.CM.Env["nodes"]:
ftype = self.CM.Env.RandomGen.choice(["levels-and", "levels-or ", "broadcast "])
self.CM.log(" - Using %s fencing for node: %s" % (ftype, node))
if ftype == "levels-and":
stl.level(1, node, "FencingPass,Fencing")
stt_nodes.append(node)
elif ftype == "levels-or ":
stl.level(1, node, "FencingFail")
stl.level(2, node, "Fencing")
stf_nodes.append(node)
# Create a Dummy agent that always passes for levels-and
if len(stt_nodes):
self.CM.install_helper("fence_dummy", destdir="/usr/sbin", sourcedir=CTSvars.Fencing_home)
stt = Resource(self.Factory, "FencingPass", "fence_dummy", "stonith")
stt["pcmk_host_list"] = string.join(stt_nodes, " ")
# Wait this many seconds before doing anything, handy for letting disks get flushed too
stt["delay"] = "20"
stt["random_sleep_range"] = "10"
stt["mode"] = "pass"
stt.commit()
# Create a Dummy agent that always fails for levels-or
if len(stf_nodes):
self.CM.install_helper("fence_dummy", destdir="/usr/sbin", sourcedir=CTSvars.Fencing_home)
stf = Resource(self.Factory, "FencingFail", "fence_dummy", "stonith")
stf["pcmk_host_list"] = string.join(stf_nodes, " ")
# Wait this many seconds before doing anything, handy for letting disks get flushed too
stf["delay"] = "20"
stf["random_sleep_range"] = "30"
stf["mode"] = "fail"
stf.commit()
# Now commit the levels themselves
stl.commit()
o = Option(self.Factory, "stonith-enabled", self.CM.Env["DoFencing"])
o["start-failure-is-fatal"] = "false"
o["pe-input-series-max"] = "5000"
o["default-action-timeout"] = "90s"
o["shutdown-escalation"] = "5min"
o["batch-limit"] = "10"
o["dc-deadtime"] = "5s"
o["no-quorum-policy"] = no_quorum
o["expected-quorum-votes"] = self.num_nodes
if self.CM.Env["DoBSC"] == 1:
o["ident-string"] = "Linux-HA TEST configuration file - REMOVEME!!"
o.commit()
# Add resources?
if self.CM.Env["CIBResource"] == 1:
self.add_resources()
if self.CM.cluster_monitor == 1:
mon = Resource(self.Factory, "cluster_mon", "ocf", "ClusterMon", "pacemaker")
mon.add_op("start", "0", requires="nothing")
mon.add_op("monitor", "5s", requires="nothing")
mon["update"] = "10"
mon["extra_options"] = "-r -n"
mon["user"] = "abeekhof"
mon["htmlfile"] = "/suse/abeekhof/Export/cluster.html"
mon.commit()
#self._create('''location prefer-dc cluster_mon rule -INFINITY: \#is_dc eq false''')
# generate cib
self.cts_cib = self._show()
if self.Factory.tmpfile != CTSvars.CRM_CONFIG_DIR+"/cib.xml":
self.Factory.rsh(self.Factory.target, "rm -f "+self.Factory.tmpfile)
return self.cts_cib
def add_resources(self):
# Per-node resources
for node in self.CM.Env["nodes"]:
name = "rsc_"+node
r = self.NewIP(name)
r.prefer(node, "100")
r.commit()
# Migrator
# Make this slightly sticky (since we have no other location constraints) to avoid relocation during Reattach
m = Resource(self.Factory, "migrator","Dummy", "ocf", "pacemaker")
m.add_meta("resource-stickiness","1")
m.add_meta("allow-migrate", "1")
m.add_op("monitor", "P10S")
m.commit()
# Ping the test master
p = Resource(self.Factory, "ping-1","ping", "ocf", "pacemaker")
p.add_op("monitor", "60s")
p["host_list"] = self.CM.Env["cts-master"]
p["name"] = "connected"
p["debug"] = "true"
c = Clone(self.Factory, "Connectivity", p)
c["globally-unique"] = "false"
c.commit()
#master slave resource
s = Resource(self.Factory, "stateful-1", "Stateful", "ocf", "pacemaker")
s.add_op("monitor", "15s", timeout="60s")
s.add_op("monitor", "16s", timeout="60s", role="Master")
ms = Master(self.Factory, "master-1", s)
ms["clone-max"] = self.num_nodes
ms["master-max"] = 1
ms["clone-node-max"] = 1
ms["master-node-max"] = 1
# Require conectivity to run the master
r = Rule(self.Factory, "connected", "-INFINITY", op="or")
r.add_child(Expression(self.Factory, "m1-connected-1", "connected", "lt", "1"))
r.add_child(Expression(self.Factory, "m1-connected-2", "connected", "not_defined", None))
ms.prefer("connected", rule=r)
ms.commit()
# Group Resource
g = Group(self.Factory, "group-1")
g.add_child(self.NewIP())
g.add_child(self.NewIP())
g.add_child(self.NewIP())
# Group with the master
g.after("master-1", first="promote", then="start")
g.colocate("master-1", "INFINITY", withrole="Master")
g.commit()
# LSB resource
lsb_agent = self.CM.install_helper("LSBDummy")
lsb = Resource(self.Factory, "lsb-dummy",lsb_agent, "lsb")
lsb.add_op("monitor", "5s")
# LSB with group
lsb.after("group-1")
lsb.colocate("group-1")
lsb.commit()
class CIB12(CIB11):
feature_set = "3.0"
version = "pacemaker-1.2"
#class HASI(CIB10):
# def add_resources(self):
# # DLM resource
# self._create('''primitive dlm ocf:pacemaker:controld op monitor interval=120s''')
# self._create('''clone dlm-clone dlm meta globally-unique=false interleave=true''')
# O2CB resource
# self._create('''primitive o2cb ocf:ocfs2:o2cb op monitor interval=120s''')
# self._create('''clone o2cb-clone o2cb meta globally-unique=false interleave=true''')
# self._create('''colocation o2cb-with-dlm INFINITY: o2cb-clone dlm-clone''')
# self._create('''order start-o2cb-after-dlm mandatory: dlm-clone o2cb-clone''')
class ConfigFactory:
def __init__(self, CM):
self.CM = CM
self.rsh = self.CM.rsh
self.register("pacemaker11", CIB11, CM, self)
self.register("pacemaker12", CIB12, CM, self)
# self.register("hae", HASI, CM, self)
self.target = self.CM.Env["nodes"][0]
self.tmpfile = None
def log(self, args):
self.CM.log("cib: %s" % args)
def debug(self, args):
self.CM.debug("cib: %s" % args)
def register(self, methodName, constructor, *args, **kargs):
"""register a constructor"""
_args = [constructor]
_args.extend(args)
setattr(self, methodName, apply(ConfigFactoryItem,_args, kargs))
def unregister(self, methodName):
"""unregister a constructor"""
delattr(self, methodName)
def createConfig(self, name="pacemaker-1.0"):
if name == "pacemaker-1.0":
name = "pacemaker10";
elif name == "pacemaker-1.1":
name = "pacemaker11";
elif name == "pacemaker-1.2":
name = "pacemaker12";
elif name == "hasi":
name = "hae";
if hasattr(self, name):
return getattr(self, name)()
else:
self.CM.log("Configuration variant '%s' is unknown. Defaulting to latest config" % name)
return self.pacemaker12()
class ConfigFactoryItem:
def __init__(self, function, *args, **kargs):
assert callable(function), "function should be a callable obj"
self._function = function
self._args = args
self._kargs = kargs
def __call__(self, *args, **kargs):
"""call function"""
_args = list(self._args)
_args.extend(args)
_kargs = self._kargs.copy()
_kargs.update(kargs)
return apply(self._function,_args,_kargs)
# Basic Sanity Testing
if __name__ == '__main__':
import CTSlab
env = CTSlab.LabEnvironment()
env["nodes"] = []
env["nodes"].append("pcmk-1")
env["nodes"].append("pcmk-2")
env["nodes"].append("pcmk-3")
env["nodes"].append("pcmk-4")
env["CIBResource"] = 1
env["IPBase"] = "10.0.0.10"
env["DoStonith"]=1
env["stonith-type"] = "fence_xvm"
env["stonith-params"] = "pcmk_arg_map=domain:uname"
manager = ClusterManager(env)
manager.cluster_monitor = False
CibFactory = ConfigFactory(manager)
cib = CibFactory.createConfig("pacemaker-1.1")
print cib.contents()
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