openstack/openstack-helm
Code Issues Proposed changes

Merge "Use nova's ping method to find out if the service is alive"

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Zuul 2019-05-08 00:37:34 +00:00 committed by Gerrit Code Review
commit 02af9df330
1 changed files with 8 additions and 5 deletions
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13
nova/templates/bin/_health-probe.py.tpl
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@ -17,8 +17,8 @@
"""
Health probe script for OpenStack service that uses RPC/unix domain socket for
communication. Check's the RPC tcp socket status on the process and send
message to service through rpc call method and expects a reply. It is expected
to receive failure from the service's RPC server as the method does not exist.
message to service through rpc call method and expects a reply.
Use nova's ping method that is designed just for such simple purpose.
Script returns failure to Kubernetes only when
a. TCP socket for the RPC communication are not established.
@ -28,7 +28,7 @@ Script returns failure to Kubernetes only when
sys.stderr.write() writes to pod's events on failures.
Usage example for Nova Compute:
# python health-probe-rpc.py --config-file /etc/nova/nova.conf \
# python health-probe.py --config-file /etc/nova/nova.conf \
# --service-queue-name compute
"""
@ -50,12 +50,15 @@ def check_service_status(transport):
"""Verify service status. Return success if service consumes message"""
try:
target = oslo_messaging.Target(topic=cfg.CONF.service_queue_name,
server=socket.gethostname())
server=socket.gethostname(),
namespace='baseapi',
version="1.1")
client = oslo_messaging.RPCClient(transport, target,
timeout=60,
retry=2)
client.call(context.RequestContext(),
'pod_health_probe_method_ignore_errors')
'ping',
arg=None)
except oslo_messaging.exceptions.MessageDeliveryFailure:
# Log to pod events
sys.stderr.write("Health probe unable to reach message bus")