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Complete fencing configurations

This commit is contained in:
Joshua Boniface 2018-06-08 12:19:30 -04:00
parent eb038dfbbb
commit 33e0100687
1 changed files with 25 additions and 16 deletions
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41
fencenode.py
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@ -20,29 +20,21 @@
#
###############################################################################
import os, sys, libvirt, uuid, kazoo.client, time
# ANSII colours for output
class bcolours:
PURPLE = '\033[95m'
BLUE = '\033[94m'
GREEN = '\033[92m'
YELLOW = '\033[93m'
RED = '\033[91m'
ENDC = '\033[0m'
BOLD = '\033[1m'
UNDERLINE = '\033[4m'
import os, sys, libvirt, uuid, kazoo.client, time, subprocess, re, ansiiprint
#
# Trigger function
#
def fence(node_name, zk):
time.sleep(3)
print(bcolours.YELLOW + '>>> ' + bcolours.ENDC + 'Fencing node {} via IPMI reboot signal.'.format(node_name))
ansiiprint.echo('Fencing node "{}" via IPMI reboot signal'.format(node_name), '', 'w')
# DO IPMI FENCE HERE
ipmi_address = zk.get('/nodes/{}/ipmiaddress'.format(node_name))[0].decode('ascii')
ipmi_username = zk.get('/nodes/{}/ipmiusername'.format(node_name))[0].decode('ascii')
ipmi_password = zk.get('/nodes/{}/ipmipassword'.format(node_name))[0].decode('ascii')
rebootViaIPMI(ipmi_address, ipmi_user, ipmi_password)
print(bcolours.BLUE + '>>> ' + bcolours.ENDC + 'Moving VMs from dead hypervisor {} to new hosts.'.format(node_name))
ansiiprint.echo('Moving VMs from dead hypervisor "{}" to new hosts'.format(node_name), '', 'i')
dead_node_running_domains = zk.get('/nodes/{}/runningdomains'.format(node_name))[0].decode('ascii').split()
for dom_uuid in dead_node_running_domains:
most_memfree = 0
@ -58,9 +50,26 @@ def fence(node_name, zk):
most_memfree = memfree
target_hypervisor = hypervisor
print(bcolours.BLUE + '>>> ' + bcolours.ENDC + 'Moving VM "{}" to hypervisor "{}".'.format(dom_uuid, target_hypervisor))
ansiiprint.echo('Moving VM "{}" to hypervisor "{}"'.format(dom_uuid, target_hypervisor), '', 'i')
transaction = zk.transaction()
transaction.set_data('/domains/{}/state'.format(dom_uuid), 'start'.encode('ascii'))
transaction.set_data('/domains/{}/hypervisor'.format(dom_uuid), target_hypervisor.encode('ascii'))
transaction.set_data('/domains/{}/lasthypervisor'.format(dom_uuid), current_hypervisor.encode('ascii'))
transaction.commit()
def getIPMIAddress():
ipmi_command = ['bash', '/fakeipmi.sh']
# Get the IPMI address
ipmi_lan_output = subprocess.run(ipmi_command, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
ipmi_lan_parsed = ipmi_lan_output.stdout.decode('ascii').split('\n')
ipmi_lan_address = [s for s in ipmi_lan_parsed if re.search('IP Address[ ]*:', s)][0].split(':')[-1].strip()
return ipmi_lan_address
def rebootViaIPMI(ipmi_address, ipmi_user, ipmi_password):
ipmi_command = ['ipmitool', '-H', ipmi_address, '-U', ipmi_user, '-P', ipmi_password, 'chassis', 'power', 'reset']
ipmi_command_output = subprocess.run(ipmi_command, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
if ipmi_command_output == 0:
ansiiprint.echo('Successfully rebooted dead node', '', 'o')
else:
ansiiprint.echo('Failed to reboot dead node', '', 'e')