Monitora containers

#!/bin/bash

# Author: Haukur Kristinsson / Erik Kristensen

# Email: haukur@hauxi.is / 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

if [ "$RUNNING" == "false" ]; then

echo "CRITICAL - $CONTAINER is not running."

exit 2

STARTED=$(docker inspect --format="{{ .State.StartedAt }}" $CONTAINER)

NAME=$(docker inspect --format="{{ .Name }}" $CONTAINER)

NETWORKMODE=$(docker inspect --format="{{ .HostConfig.NetworkMode }}" $CONTAINER)

NETWORK=$(docker inspect --format="{{ .NetworkSettings.Networks."$NETWORKMODE".IPAddress }}" $CONTAINER)

echo "OK - $CONTAINER is running. IP: $NETWORK, StartedAt: $STARTED, Named: $NAME"