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[WIP] Add optional http health check for elasticsearch. #35

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[WIP] Add optional http health check for elasticsearch. #35

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c9e1459
Add optional http health check for elasticsearch.
jmcarp Feb 14, 2017
d7b3996
Check cluster health if not master.
jmcarp Feb 14, 2017
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12 changes: 12 additions & 0 deletions jobs/elasticsearch/monit
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Original file line number Diff line number Diff line change
@@ -1,8 +1,20 @@
<% if p("elasticsearch.monitor.type") == "process" %>
check process elasticsearch
with pidfile /var/vcap/sys/run/elasticsearch/elasticsearch.pid
start program "/var/vcap/jobs/elasticsearch/bin/monit_debugger elasticsearch_ctl '/var/vcap/jobs/elasticsearch/bin/elasticsearch_ctl start'" with timeout 120 seconds
stop program "/var/vcap/jobs/elasticsearch/bin/monit_debugger elasticsearch_ctl '/var/vcap/jobs/elasticsearch/bin/elasticsearch_ctl stop'"
group vcap
<% elsif p("elasticsearch.monitor.type") == "host" %>
check host elasticsearch with address 127.0.0.1
start program "/var/vcap/jobs/elasticsearch/bin/monit_debugger elasticsearch_ctl '/var/vcap/jobs/elasticsearch/bin/elasticsearch_ctl start'" with timeout 120 seconds
stop program "/var/vcap/jobs/elasticsearch/bin/monit_debugger elasticsearch_ctl '/var/vcap/jobs/elasticsearch/bin/elasticsearch_ctl stop'"
if failed url http://127.0.0.1:9200/_cluster/health
<% if p("elasticsearch.node.allow_data") and not p("elasticsearch.node.allow_master") %>and content = '"status":"green"'<% end %>
timeout <%= p("elasticsearch.monitor.host_timeout") %> seconds
for <%= p("elasticsearch.monitor.host_cycles") %> cycles
then stop
group vcap
<% end %>

check device elasticsearch-ephemeral_disk with path /var/vcap/data
if SPACE usage > 80% then alert
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9 changes: 9 additions & 0 deletions jobs/elasticsearch/spec
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Expand Up @@ -40,6 +40,15 @@ properties:
elasticsearch.limits.fd:
description: Maximum file descriptors
default: 65536
elasticsearch.monitor.type:
description: Monit check type; must be "process" or "host"
default: process
elasticsearch.monitor.host_timeout:
description: Host check timeout, in seconds
default: 15
elasticsearch.monitor.host_cycles:
description: Host check cycles
default: 5
elasticsearch.discovery.minimum_master_nodes:
description: The minimum number of master eligible nodes a node should "see" in order to operate within the cluster. Recommended to set it to a higher value than 1 when running more than 2 nodes in the cluster.
default: 1
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