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