diff --git a/heartbeat/docker b/heartbeat/docker index 138cfcead..6dd83a259 100755 --- a/heartbeat/docker +++ b/heartbeat/docker @@ -1,278 +1,278 @@ #!/bin/sh # # The docker HA resource agent creates and launches a docker container # based off a supplied docker image. Containers managed by this agent # are both created and removed upon the agent's start and stop actions. # # Copyright (c) 2014 David Vossel # All Rights Reserved. # # This program is free software; you can redistribute it and/or modify # it under the terms of version 2 of the GNU General Public License as # published by the Free Software Foundation. # # This program is distributed in the hope that it would be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. # # Further, this software is distributed without any warranty that it is # free of the rightful claim of any third person regarding infringement # or the like. Any license provided herein, whether implied or # otherwise, applies only to this software file. Patent licenses, if # any, provided herein do not apply to combinations of this program with # other software, or any other product whatsoever. # # You should have received a copy of the GNU General Public License # along with this program; if not, write the Free Software Foundation, # Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. # ####################################################################### # Initialization: : ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat} . ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs ####################################################################### meta_data() { cat < 1.0 The docker HA resource agent creates and launches a docker container based off a supplied docker image. Containers managed by this agent are both created and removed upon the agent's start and stop actions. Docker container resource agent. The docker image to base this container off of. docker image The name to give the created container. By default this will be that resource's instance name prefixed with 'HA-'. docker container name Allow the image to be pulled from the configured docker registry when the image does not exist locally. NOTE, this can drastically increase the time required to start the container if the image repository is pulled over the network. Allow pulling non-local images Add options to be appended to the 'docker run' command which is used when creating the container during the start action. This option allows users to do things such as setting a custom entry point and injecting environment variables into the newly created container. Note the '-d' option is supplied regardless of this value to force containers to run in the background. run options Specifiy a command to launch within the container once it has initialized. run command - - + + - + END } ####################################################################### REQUIRE_IMAGE_PULL=0 docker_usage() { cat <&1 | grep '^ *\"Running.*:.*true' > /dev/null 2>&1 if [ $? -eq 0 ]; then return $OCF_SUCCESS fi # check for left over containers that may be inactive but left over after a reboot. docker inspect $CONTAINER 2>&1 | grep '^ *\"Running.*:.*false' > /dev/null 2>&1 if [ $? -eq 0 ]; then ocf_log notice "Cleaning up inactive container, ${CONTAINER}. Container exists but is not running." docker rm $CONTAINER > /dev/null 2>&1 return $OCF_NOT_RUNNING fi return $OCF_NOT_RUNNING } docker_start() { local run_opts="-d --name=${CONTAINER}" # check to see if the container has already started docker_monitor if [ $? -eq $OCF_SUCCESS ]; then return $OCF_SUCCESS fi if [ -n "$OCF_RESKEY_run_opts" ]; then run_opts="$run_opts $OCF_RESKEY_run_opts" fi if [ $REQUIRE_IMAGE_PULL -eq 1 ]; then ocf_log notice "Beginning pull of image, ${OCF_RESKEY_image}" docker pull "${OCF_RESKEY_image}" if [ $? -ne 0 ]; then ocf_log err "failed to pull image ${OCF_RESKEY_image}" return $OCF_ERR_GENERIC fi fi ocf_run docker run $run_opts $OCF_RESKEY_image $OCF_RESKEY_run_cmd if [ $? -ne 0 ]; then ocf_log err "docker run command failed to launch container" return $OCF_ERR_GENERIC fi docker_monitor if [ $? -ne $OCF_SUCCESS ]; then ocf_log err "Newly created docker container exited after start" return $OCF_ERR_GENERIC fi return $OCF_SUCCESS } docker_stop() { local timeout=60 docker_monitor if [ $? -eq $OCF_NOT_RUNNING ]; then return $OCF_SUCCESS fi if [ -n "$OCF_RESKEY_CRM_meta_timeout" ]; then timeout=$((($OCF_RESKEY_CRM_meta_timeout/1000) -5 )) if [ $timeout -lt 10 ]; then timeout=10 fi fi ocf_log debug "waiting $timeout seconds before killing container" ocf_run docker stop -t=$timeout $CONTAINER if [ $? -ne 0 ]; then ocf_log err "Failed to stop container, ${CONTAINER}, based on image, ${OCF_RESKEY_image}." return $OCF_ERR_GENERIC fi ocf_run docker rm $CONTAINER if [ $? -ne 0 ]; then ocf_log err "Failed to remove stopped container, ${CONTAINER}, based on image, ${OCF_RESKEY_image}." return $OCF_ERR_GENERIC fi return $OCF_SUCCESS } image_exists() { local res=1 echo "${OCF_RESKEY_image}" | grep -q ":" if [ $? -eq 0 ]; then docker images | awk '{print $1 ":" $2}' | grep "^${OCF_RESKEY_image}\$" > /dev/null 2>&1 else docker images | awk '{print $1}' | grep "^${OCF_RESKEY_image}\$" > /dev/null 2>&1 fi if [ $? -eq 0 ]; then return 0 fi if ocf_is_true "$OCF_RESKEY_allow_pull"; then REQUIRE_IMAGE_PULL=1 ocf_log notice "Image (${OCF_RESKEY_image}) does not exist locally but will be pulled during start" return 0 fi # image not found. return 1 } docker_validate() { check_binary docker if [ -z "$OCF_RESKEY_image" ]; then ocf_log err "'image' option is required" exit $OCF_ERR_CONFIGURED fi image_exists if [ $? -ne 0 ]; then ocf_log err "base image, ${OCF_RESKEY_image}, could not be found." exit $OCF_ERR_CONFIGURED fi return $OCF_SUCCESS } : ${OCF_RESKEY_container=HA-${OCF_RESOURCE_INSTANCE}} CONTAINER=$OCF_RESKEY_container case $__OCF_ACTION in meta-data) meta_data exit $OCF_SUCCESS;; start) docker_validate docker_start;; stop) docker_stop;; monitor) docker_monitor;; validate-all) docker_validate;; usage|help) docker_usage exit $OCF_SUCCESS ;; *) docker_usage exit $OCF_ERR_UNIMPLEMENTED ;; esac rc=$? ocf_log debug "${OCF_RESOURCE_INSTANCE} $__OCF_ACTION : $rc" exit $rc