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Add liveness probe for fluentd-gcp #42299

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merged 1 commit into from Mar 22, 2017
Merged

Add liveness probe for fluentd-gcp #42299

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32 changes: 32 additions & 0 deletions cluster/saltbase/salt/fluentd-gcp-gci/fluentd-gcp-gci.yaml
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Expand Up @@ -46,6 +46,38 @@ spec:
mountPath: /var/log/journal
- name: libsystemddir
mountPath: /host/lib
# Liveness probe is aimed to help in situarions where fluentd
# silently hangs for no apparent reasons until manual restart.
# The idea of this probe is that if fluentd is not queueing or
# flushing chunks for 5 minutes, something is not right. If
# you want to change the fluentd configuration, reducing amount of
# logs fluentd collects, consider changing the threshold or turning
# liveness probe off completely.
livenessProbe:
initialDelaySeconds: 600
periodSeconds: 60
exec:
command:
- '/bin/sh'
- '-c'
- >
LIVENESS_THRESHOLD_SECONDS=${LIVENESS_THRESHOLD_SECONDS:-300};
STUCK_THRESHOLD_SECONDS=${LIVENESS_THRESHOLD_SECONDS:-900};
if [ ! -e /var/log/fluentd-buffers ];
then
exit 1;
fi;
LAST_MODIFIED_DATE=`stat /var/log/fluentd-buffers | grep Modify | sed -r "s/Modify: (.*)/\1/"`;
LAST_MODIFIED_TIMESTAMP=`date -d "$LAST_MODIFIED_DATE" +%s`;
if [ `date +%s` -gt `expr $LAST_MODIFIED_TIMESTAMP + $STUCK_THRESHOLD_SECONDS` ];
then
rm -rf /var/log/fluentd-buffers;
exit 1;
fi;
if [ `date +%s` -gt `expr $LAST_MODIFIED_TIMESTAMP + $LIVENESS_THRESHOLD_SECONDS` ];
then
exit 1;
fi;
terminationGracePeriodSeconds: 30
volumes:
- name: varlog
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32 changes: 32 additions & 0 deletions cluster/saltbase/salt/fluentd-gcp/fluentd-gcp.yaml
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Expand Up @@ -37,6 +37,38 @@ spec:
- name: varlibdockercontainers
mountPath: /var/lib/docker/containers
readOnly: true
# Liveness probe is aimed to help in situarions where fluentd
# silently hangs for no apparent reasons until manual restart.
# The idea of this probe is that if fluentd is not queueing or
# flushing chunks for 5 minutes, something is not right. If
# you want to change the fluentd configuration, reducing amount of
# logs fluentd collects, consider changing the threshold or turning
# liveness probe off completely.
livenessProbe:
initialDelaySeconds: 600
periodSeconds: 60
exec:
command:
- '/bin/sh'
- '-c'
- >
LIVENESS_THRESHOLD_SECONDS=${LIVENESS_THRESHOLD_SECONDS:-300};
STUCK_THRESHOLD_SECONDS=${LIVENESS_THRESHOLD_SECONDS:-900};
if [ ! -e /var/log/fluentd-buffers ];
then
exit 1;
fi;
LAST_MODIFIED_DATE=`stat /var/log/fluentd-buffers | grep Modify | sed -r "s/Modify: (.*)/\1/"`;
LAST_MODIFIED_TIMESTAMP=`date -d "$LAST_MODIFIED_DATE" +%s`;
if [ `date +%s` -gt `expr $LAST_MODIFIED_TIMESTAMP + $STUCK_THRESHOLD_SECONDS` ];
then
rm -rf /var/log/fluentd-buffers;
exit 1;
fi;
if [ `date +%s` -gt `expr $LAST_MODIFIED_TIMESTAMP + $LIVENESS_THRESHOLD_SECONDS` ];
then
exit 1;
fi;
terminationGracePeriodSeconds: 30
volumes:
- name: varlog
Expand Down