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Revert "Only perform fencing duties on primary" 

This reverts commit 464c69aac6.

Actually, yea, this made sense - if the primary fails, it can't
fence itself.
This commit is contained in:
Joshua Boniface 2019-06-25 12:36:48 -04:00
parent 85a5a8a0c9
commit 75d0e7f989
1 changed files with 28 additions and 29 deletions
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57
node-daemon/pvcd/Daemon.py
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@ -1120,36 +1120,35 @@ def update_zookeeper():
# Close the Libvirt connection # Close the Libvirt connection
lv_conn.close() lv_conn.close()
# Look for dead nodes and fence them (primary only) # Look for dead nodes and fence them
if this_node.router_state == 'primary' if debug:
if debug: print("Look for dead nodes and fence them")
print("Look for dead nodes and fence them") if config['daemon_mode'] == 'coordinator':
if config['daemon_mode'] == 'coordinator': for node_name in d_node:
for node_name in d_node: try:
try: node_daemon_state = zkhandler.readdata(zk_conn, '/nodes/{}/daemonstate'.format(node_name))
node_daemon_state = zkhandler.readdata(zk_conn, '/nodes/{}/daemonstate'.format(node_name)) node_domain_state = zkhandler.readdata(zk_conn, '/nodes/{}/domainstate'.format(node_name))
node_domain_state = zkhandler.readdata(zk_conn, '/nodes/{}/domainstate'.format(node_name)) node_keepalive = int(zkhandler.readdata(zk_conn, '/nodes/{}/keepalive'.format(node_name)))
node_keepalive = int(zkhandler.readdata(zk_conn, '/nodes/{}/keepalive'.format(node_name))) except:
except: node_daemon_state = 'unknown'
node_daemon_state = 'unknown' node_domain_state = 'unknown'
node_domain_state = 'unknown' node_keepalive = 0
node_keepalive = 0
# Handle deadtime and fencng if needed # Handle deadtime and fencng if needed
# (A node is considered dead when its keepalive timer is >6*keepalive_interval seconds # (A node is considered dead when its keepalive timer is >6*keepalive_interval seconds
# out-of-date while in 'start' state) # out-of-date while in 'start' state)
node_deadtime = int(time.time()) - ( int(config['keepalive_interval']) * int(config['fence_intervals']) ) node_deadtime = int(time.time()) - ( int(config['keepalive_interval']) * int(config['fence_intervals']) )
if node_keepalive < node_deadtime and node_daemon_state == 'run': if node_keepalive < node_deadtime and node_daemon_state == 'run':
logger.out('Node {} seems dead - starting monitor for fencing'.format(node_name), state='w') logger.out('Node {} seems dead - starting monitor for fencing'.format(node_name), state='w')
zk_lock = zkhandler.writelock(zk_conn, '/nodes/{}/daemonstate'.format(node_name)) zk_lock = zkhandler.writelock(zk_conn, '/nodes/{}/daemonstate'.format(node_name))
with zk_lock: with zk_lock:
# Ensures that, if we lost the lock race and come out of waiting, # Ensures that, if we lost the lock race and come out of waiting,
# we won't try to trigger our own fence thread. # we won't try to trigger our own fence thread.
if zkhandler.readdata(zk_conn, '/nodes/{}/daemonstate'.format(node_name)) != 'dead': if zkhandler.readdata(zk_conn, '/nodes/{}/daemonstate'.format(node_name)) != 'dead':
fence_thread = threading.Thread(target=fencing.fenceNode, args=(node_name, zk_conn, config, logger), kwargs={}) fence_thread = threading.Thread(target=fencing.fenceNode, args=(node_name, zk_conn, config, logger), kwargs={})
fence_thread.start() fence_thread.start()
# Write the updated data after we start the fence thread # Write the updated data after we start the fence thread
zkhandler.writedata(zk_conn, { '/nodes/{}/daemonstate'.format(node_name): 'dead' }) zkhandler.writedata(zk_conn, { '/nodes/{}/daemonstate'.format(node_name): 'dead' })
# Display node information to the terminal # Display node information to the terminal
if config['log_keepalives']: if config['log_keepalives']: