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Add flush component to fence

This commit is contained in:
Joshua Boniface 2018-06-06 20:36:21 -04:00
parent c3280557ec
commit 6a0e262e96
1 changed files with 25 additions and 1 deletions
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26
fencenode.py
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@ -28,4 +28,28 @@ import os, sys, libvirt, uuid, kazoo.client, time
def fence(node_name, zk):
time.sleep(3)
print('>>> Fencing node {} via IPMI reboot signal.'.format(node_name))
# DO IPMI FENCE HERE
print('>>> Moving VMs from dead hypervisor {} to new hosts.'.format(node_name))
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
hypervisor_list = zk.get_children('/nodes')
current_hypervisor = zk.get('/dom_uuids/{}/hypervisor'.format(dom_uuid))[0].decode('ascii')
for hypervisor in hypervisor_list:
state = zk.get('/nodes/{}/state'.format(hypervisor))[0].decode('ascii')
if state != 'start' or hypervisor == current_hypervisor:
continue
memfree = int(zk.get('/nodes/{}/memfree'.format(hypervisor))[0].decode('ascii'))
if memfree > most_memfree:
most_memfree = memfree
target_hypervisor = hypervisor
print('>>> Moving VM "{}" to hypervisor "{}".'.format(dom_uuid, target_hypervisor))
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()