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Bash Script for Nagios to Check Status of Docker Container
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#!/bin/bash | |
# Author: Erik Kristensen | |
# Email: erik@erikkristensen.com | |
# License: MIT | |
# Nagios Usage: check_nrpe!check_docker_container!_container_id_ | |
# Usage: ./check_docker_container.sh _container_id_ | |
# | |
# The script checks if a container is running. | |
# OK - running | |
# WARNING - container is ghosted | |
# CRITICAL - container is stopped | |
# UNKNOWN - does not exist | |
CONTAINER=$1 | |
RUNNING=$(docker inspect --format="{{ .State.Running }}" $CONTAINER 2> /dev/null) | |
if [ $? -eq 1 ]; then | |
echo "UNKNOWN - $CONTAINER does not exist." | |
exit 3 | |
fi | |
if [ "$RUNNING" == "false" ]; then | |
echo "CRITICAL - $CONTAINER is not running." | |
exit 2 | |
fi | |
GHOST=$(docker inspect --format="{{ .State.Ghost }}" $CONTAINER) | |
if [ "$GHOST" == "true" ]; then | |
echo "WARNING - $CONTAINER has been ghosted." | |
exit 1 | |
fi | |
STARTED=$(docker inspect --format="{{ .State.StartedAt }}" $CONTAINER) | |
NETWORK=$(docker inspect --format="{{ .NetworkSettings.IPAddress }}" $CONTAINER) | |
echo "OK - $CONTAINER is running. IP: $NETWORK, StartedAt: $STARTED" |
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