def status(self, args, options):
master = ocf.ha_master_uname()
myself = ocf.ha_node_uname(ocf.ha_uuid())
status = "unknown"
if master is None:
status = "down"
elif myself == master:
status = "master"
else:
status = "slave"
return status
def apply(self, args, options):
# We follow the steps described at https://wiki.xivo.fr/index.php/Install_XiVO_HA
self.log.debug("** apply HA changes **")
out = ["** apply HA changes **"]
"""
case #1: HA not starter (ha_master_uname == '')
we cannot stand if we have another HA node
: HA configuration is applied
case #2: we are not master node
: configuration not applied
case #3: slave nodes are not stopped
: configuration not applied
"""
master = ocf.ha_node_uname(ocf.ha_uuid())
if ocf.ha_master_uname() is not None and master != ocf.ha_master_uname():
out.append("Changes not applied: current node MUST be master node")
raise HttpReqError(500, "\n".join(out))
slaves = ocf.ha_nodes_uname_except(master)
if slaves is not None:
for slave in slaves:
if ocf.ha_node_status(slave) == "active":
out.append("Changes not applied: slave node '%s' is active" % slave)
raise HttpReqError(500, "\n".join(out))
try:
# 1. stop heartbeat
self._exec("stopping heartbeat", ["/etc/init.d/heartbeat", "stop"], out)
# 2. start mysql
self._exec("start mysql", ["/etc/init.d/mysql", "start"], out)
# 3. execute update-pf-ha
self._exec("executing update-pf-ha", ["/usr/sbin/update-pf-ha"], out)
match = re.match(".*CIB file written:\s+(/tmp/cib.xml.[0-9]+).*", out[-1], re.S | re.M)
if match is None:
out.append("ERROR: no CIB file")
raise HttpReqError(500, "\n".join(out))
cibfile = match.group(1)
if not os.path.isfile(cibfile):
out.append("ERROR: CIB file %s not found" % cibfile)
raise HttpReqError(500, "\n".join(out))
# 4. stopping mysql
self._exec("stop mysql", ["/etc/init.d/mysql", "stop"], out)
# 5. verify CIB file
self._exec("verify %s CIB file" % cibfile, ["/usr/sbin/crm_verify", "-V", "--xml-file=%s" % cibfile], out)
# 6. clean heartbeat state
self._exec("clean heartbeat CRM state", ["/bin/rm", "-Rf", "/var/lib/heartbeat/crm/*"], out)
# 7. install cib file
self._exec("install CIB file", ["cp", "-a", cibfile, "/var/lib/heartbeat/crm/cib.xml"], out)
# 8. start heartbeat
self._exec("start heartbeat", ["/etc/init.d/heartbeat", "start"], out)
except OSError, e:
traceback.print_exc()
raise HttpReqError(500, "\n".join(out))