def __setMaintenanceMode(host, mode):
try:
print " Setting maintenance mode to %s on %s." % (mode, host.fqdn)
cmd = "pcs property set maintenance-mode=%s" % mode
shell.try_remote_command(host.fqdn, cmd)
except Exception as e:
print " Could not set the cluster to standby mode: %s" % e
shell.cont()
def applyNewPacemakerConfig(host, new_cib_location):
try:
print " Applying new pacemaker config."
shell.try_remote_command(
host.fqdn, "cibadmin --replace --xml-file %s" % new_cib_location)
except Exception as e:
print " Could not apply updated pacemaker configuration: %s" % e
shell.cont()
def __setAgentState(host, action):
try:
print " %s the agent on %s." % (action, host.fqdn)
cmd = "service chroma-agent %s" % action
shell.try_remote_command(host.fqdn, cmd)
except Exception as e:
print " Could not stop the agent: %s" % e
shell.cont()
def backupCurrentPacemakerConfig(host):
try:
print " Backing up pacemaker config on %s" % host.fqdn
ts = int(time.time())
cmd = "cibadmin --query > /tmp/pacemaker_backup_%s" % ts
shell.try_remote_command(host.fqdn, cmd)
except Exception as e:
print " Could not backup the pacemaker config: %s" % e
shell.cont()
def updatePacemakerConfig(host, cib, new_cib_location):
try:
print " Copying %s to /tmp/selected_cib.xml and incrementing \
both epoch and admin epoch." % cib
shell.try_remote_command(
host.fqdn,
"""cat %s | sed "s/\\"/@@/g" | sed -r "s/(^<cib.+)(epoch=@@)([0-9]+)(.+)(admin_epoch=@@)([0-9]+)(.+)(>$)/echo \\"\\1\\2\\$((\\3+1))\\4\\5\\$((\\6+1))\\7\\8\\"/ge" | sed "s/@@/\\"/g" > %s"""
% (cib, new_cib_location) # noqa E501
)
except Exception as e:
print " Could not copy %s to %s. %s" % (cib, new_cib_location, e)
shell.cont()
def stopPacemaker(host):
stop_service = raw_input(" Stop pacemaker service on %s? (y/n)" %
host.fqdn).lower()
if stop_service in ['y', 'yes']:
print " Stopping pacemaker on %s" % host.fqdn
try:
shell.try_remote_command(host.fqdn, 'service pacemaker stop')
except Exception as e:
print " Could not stop pacemaker on %s: %s" % (host.fqdn, e)
try_again = raw_input(" Try again? (y/n)").lower()
if try_again in ['y', 'yes']:
stopPacemaker(host)
def startCorosync(host):
start_service = raw_input(" Start corosync service on %s? (y/n)" %
host.fqdn).lower()
if start_service in ['y', 'yes']:
print " Starting corosync on %s" % host.fqdn
try:
shell.try_remote_command(host.fqdn, 'service corosync start')
except Exception as e:
print " Could not start corosync on %s: %s" % (host.fqdn, e)
try_again = raw_input(" Try again? (y/n)").lower()
if try_again in ['y', 'yes']:
startCorosync(host)