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Healthcheck using Host and Port from zoo.cfg #17

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Healthcheck using Host and Port from zoo.cfg #17

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Healthcheck using Host and Port from zoo.cfg
j3k0 Oct 18, 2018
58986d5
Merge branch 'master' into master
j3k0 Jun 8, 2021
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3 changes: 2 additions & 1 deletion Dockerfile
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Original file line number Diff line number Diff line change
Expand Up @@ -22,7 +22,8 @@ WORKDIR /opt/zookeeper

# Only checks if server is up and listening, not quorum.
# See https://zookeeper.apache.org/doc/r3.5.5/zookeeperAdmin.html#sc_zkCommands
HEALTHCHECK CMD [ $(echo ruok | nc 127.0.0.1:2181) == "imok" ] || exit 1
COPY healthcheck /healthcheck
HEALTHCHECK CMD /healthcheck

VOLUME ["/opt/zookeeper/conf", "/tmp/zookeeper"]

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11 changes: 11 additions & 0 deletions healthcheck
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@@ -0,0 +1,11 @@
#!/bin/bash
# Read bound host and port from the config file (if any)
set -e

CFG=/opt/zookeeper/conf/zoo.cfg
if [ -e "$CFG" ]; then
H="$(awk -F= '/^clientPortAddress=/{ print $2 }' "$CFG")"
P="$(awk -F= '/^clientPort=/{ print $2 }' "$CFG")"
fi

[ "$(echo ruok | nc "${H:-127.0.0.1}" "${P:-2181}")" == "imok" ] || exit 1