#!/bin/sh # # # OCF resource agent to attach a cinder volume to an instance. # # Copyright (c) 2018 Mathieu GRZYBEK # Based on code of Markus Guertler # 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 # Defaults OCF_RESKEY_openstackcli_default="/usr/bin/openstack" OCF_RESKEY_volume_local_check_default="true" : ${OCF_RESKEY_openstackcli=${OCF_RESKEY_openstackcli_default}} : ${OCF_RESKEY_volume_local_check=${OCF_RESKEY_volume_local_check_default}} ####################################################################### USAGE="usage: $0 {start|stop|status|meta-data}"; ############################################################################### ############################################################################### # # Functions # ############################################################################### metadata() { cat < 2.0 Resource Agent to attach a cinder volume to an instance. It relies on attributes given by openstack-info resource agent (openstack_id attribute). Attach a cinder volume Path to command line tools for openstack. Path to Openstack CLI tool This option allows the cluster to monitor the cinder volume presence without calling the API. Monitor cinder volume locally Valid Openstack credentials as openrc file from api_access/openrc. openrc file Cinder volume identifier to use to attach the bloc storage. Volume ID END } _get_node_id() { node_id=$(${HA_SBIN_DIR}/attrd_updater --query -n openstack_id -N $(crm_node -n) | awk -F= '{gsub("\"","");print $NF}') if ! echo $node_id|grep -P "^[0-9a-f]{8}-([0-9a-f]{4}-){3}[0-9a-f]{12}$"; then ocf_exit_reason "openstack_id attribute must be set for node $crm_node" exit $OCF_ERR_CONFIGURED fi } osvol_validate() { check_binary "$OCF_RESKEY_openstackcli" if [ -z "$OCF_RESKEY_openrc" ]; then ocf_exit_reason "openrc parameter not set" return $OCF_ERR_CONFIGURED fi if [ ! -f "$OCF_RESKEY_openrc" ] ; then ocf_exit_reason "openrc file not found" return $OCF_ERR_CONFIGURED fi . $OCF_RESKEY_openrc if ! $OCF_RESKEY_openstackcli volume list|grep -q $OCF_RESKEY_volume_id ; then ocf_exit_reason "volume-id $OCF_RESKEY_volume_id not found" return $OCF_ERR_CONFIGURED fi ${HA_SBIN_DIR}/attrd_updater --query -n openstack_id -N $(crm_node -n) > /dev/null 2>&1 if [ $? -ne 0 ] ; then ocf_log warn "attr_updater failed to get openstack_id attribute of node $OCF_RESOURCE_INSTANCE" return $OCF_ERR_GENERIC fi return $OCF_SUCCESS } osvol_monitor() { local result local node_id local short_volume_id node_id=$(_get_node_id) if ocf_is_true $OCF_RESKEY_volume_local_check ; then # # Is the volue attached? # We check the local devices # short_volume_id=$(echo $OCF_RESKEY_volume_id | awk '{print substr($0, 0, 20)}') if lsblk /dev/disk/by-id/virtio-$short_volume_id 1>/dev/null 2>&1; then return $OCF_SUCCESS else ocf_log warn "$OCF_RESKEY_volume_id is not attached to instance $node_id" return $OCF_NOT_RUNNING fi fi # # Is the volue attached? # We use the API # result=$($OCF_RESKEY_openstackcli volume show \ --column status \ --column attachments \ --format value \ $OCF_RESKEY_volume_id) if echo "$result" | grep -q available ; then ocf_log warn "$OCF_RESKEY_volume_id is not attached to any instance" return $OCF_NOT_RUNNING else export attached_server_id=$(echo $result|head -n1| grep -P -o "'server_id': '[0-9a-f]{8}-([0-9a-f]{4}-){3}[0-9a-f]{12}'"| grep -P -o "[0-9a-f]{8}-([0-9a-f]{4}-){3}[0-9a-f]{12}") ocf_log info "$OCF_RESKEY_volume_id is attached to instance $attached_server_id" # Compare node_id and the id of the node the volume is attached to if [ "$node_id" != "$attached_server_id" ] ; then ocf_log warn "$OCF_RESKEY_volume_id is not attached to this instance" return $OCF_NOT_RUNNING fi fi return $OCF_SUCCESS } osvol_stop() { local node_id # # Is the volume already attached? # osvol_monitor if [ $? = $OCF_NOT_RUNNING ]; then ocf_log info "Volume $OCF_RESKEY_volume_id already available" return $OCF_SUCCESS fi node_id=$(_get_node_id) # # Detach the volume # if ! $OCF_RESKEY_openstackcli server remove volume $node_id $OCF_RESKEY_volume_id ; then ocf_log error "Couldn't remove volume $OCF_RESKEY_volume_id from instance $node_id" return $OCF_ERR_GENERIC fi ocf_log info "Successfully removed $OCF_RESKEY_volume_id from instance $node_id" return $OCF_SUCCESS } osvol_start() { local node_id # # Is the volume already attached? # osvol_monitor if [ $? = $OCF_SUCCESS ]; then ocf_log info "$OCF_RESKEY_volume_id already attached" return $OCF_SUCCESS fi # # Detach it from another node # TODO: make it optional in case multi-attachment is allowed by Cinder # if [ ! -z $attached_server_id ] ; then if ! $OCF_RESKEY_openstackcli server remove volume $attached_server_id $OCF_RESKEY_volume_id ; then ocf_log error "Couldn't remove volume $OCF_RESKEY_volume_id from instance $attached_server_id" return $OCF_ERR_GENERIC fi fi export attached_server_id="" node_id=$(_get_node_id) # # Attach the volume # $OCF_RESKEY_openstackcli server add volume $node_id $OCF_RESKEY_volume_id if [ $? != $OCF_SUCCESS ]; then ocf_log error "Couldn't add volume $OCF_RESKEY_volume_id to instance $node_id" return $OCF_ERR_GENERIC fi return $OCF_SUCCESS } ############################################################################### # # MAIN # ############################################################################### case $__OCF_ACTION in meta-data) metadata exit $OCF_SUCCESS ;; usage|help) echo $USAGE exit $OCF_SUCCESS ;; esac if ! ocf_is_root; then ocf_log err "You must be root for $__OCF_ACTION operation." exit $OCF_ERR_PERM fi case $__OCF_ACTION in start) osvol_validate || exit $? osvol_start;; stop) osvol_validate || exit $? osvol_stop;; monitor|status) osvol_validate || exit $? osvol_monitor;; validate-all) osvol_validate ;; *) echo $USAGE exit $OCF_ERR_UNIMPLEMENTED ;; esac exit $?