#!/bin/bash ################################################################################# # # # iscsi-ha - High Availability framework for iSCSI cluster used in conjunction # # with XAPI based Xen Virtualization Environment (Xen Cloud Platform/XenServer) # # Copyright 2021 Salvatore Costantino # # ha@pulsesupply.com # # # # # # iscsi-ha is free software: you can redistribute it and/or modify # # it under the terms of the GNU General Public License as published by # # the Free Software Foundation, either version 3 of the License, or # # (at your option) any later version. # # # # iscsi-ha is distributed in the hope that it will be useful, # # but WITHOUT ANY WARRANTY; without even the implied warranty of # # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # # GNU General Public License for more details. # # # # You should have received a copy of the GNU General Public License # # along with iscsi-ha. If not, see . # # # ################################################################################# ISCSI_HA_INIT='/etc/iscsi-ha/iscsi-ha.load' ISCSI_HA_FUNCTIONS='/etc/iscsi-ha/iscsi-ha.func' IHA_IHA_CONF_FILE='/etc/iscsi-ha/iscsi-ha.conf' IHA_DRBD_CONF_FILE='/etc/drbd.conf' IHA_TGTD_CONF_FILE='/etc/tgt/conf.d/ha-targets.conf' IHA_TGTD_ALTERNATE_CONF_FILE='/etc/tgt/targets.conf' IHA_LVM_CONF_FILE='/etc/lvm/lvm.conf' IHA_LVM_MASTER_CONF_FILE='/etc/lvm/master/lvm.conf' IHA_IPTABLES_CONF_FILE='/etc/sysconfig/iptables' ARCHIVE_FOLDER='/home' LVM_FILTER='' POOL_UUID=$(xe pool-list --minimal) declare -a CONFIG_MAP CONFIG_MAP=(IHA_IHA_CONF IHA_DRBD_CONF IHA_TGTD_CONF IHA_TGTD_ALTERNATE_CONF IHA_LVM_CONF IHA_LVM_MASTER_CONF IHA_IPTABLES_CONF) declare -a CONF_FILE_LIST CONF_FILE_LIST=($IHA_IHA_CONF_FILE $IHA_DRBD_CONF_FILE $IHA_TGTD_CONF_FILE $IHA_TGTD_ALTERNATE_CONF_FILE $IHA_LVM_CONF_FILE $IHA_LVM_MASTER_CONF_FILE) THE_ACTION=$1 SUCCESS=true if [ ! $1 ] then echo "Missing madatory argument[1] save|restore" exit 1 fi function exit_with_error () { echo "$1" exit 1 } function warning () { echo "$1" SUCCESS=false } ############################# ## function insert_into_map ## ## inserts encoded string ## of the file contents ## or string content ## into pool configuration ## for the passed filename ## ## arg1: parameter key ## arg2: configuration file ############################ function insert_into_map () { local PARAM_KEY=$1 if [ -e "$2" ] then #we are processing a file local PARAM_VAL=$(cat $2 | base64 -w 0) else #we are processing a string local PARAM_VAL=$(echo -n $2 | base64 -w 0) fi xe pool-param-set uuid=${POOL_UUID} other-config:${PARAM_KEY}="${PARAM_VAL}" } #End function insert_into_map ############################# ## function restore_from_map ## ## restores configuration ## data from pool database ## into target configuration ## file. ## ## arg1: parameter key ## arg2: configuration file ############################ function restore_from_map () { local PARAM_KEY=$1 local PARAM_VAL=$(xe pool-param-get uuid=${POOL_UUID} param-name=other-config param-key=${PARAM_KEY}) local PARAM_FILE=$2 if [[ "${PARAM_KEY}" == *IPTABLES* ]] then ############################################# ## we are processing a FW sctipt - do not ## restore since future releses of ## XCP/XenServer could change the default ## script and we don't want to get in the way. ## Replication network FW rules are now managed by ## iscsi-ha init script at runtime instead ############################################# echo "Not Restoring file [${PARAM_FILE}]. Use fw_init instead" return 0 elif [[ "${PARAM_KEY}" == *LVM* ]] then local THIS_STRING_CONTENT=$(echo ${PARAM_VAL} | base64 -d) local THIS_PARAM_CONTENT=$(echo ${PARAM_VAL} | base64 -d) if [ ${#THIS_PARAM_CONTENT} -eq 0 ] then echo "Parameter [${PARAM_KEY}] is empty. Not restoring an empty value." return 1 fi ############################################# # we are processing a string in lvm.conf # if filter exists, replace it # else, find position in file and insert new ############################################# if [ $(cat ${PARAM_FILE} | grep -c -E ^[[:space:]]*filter) -eq 0 ] then #insert new filter local LVM_DEVICES_LINE_BEGIN=$(cat /etc/lvm/lvm.conf | grep -n -E ^[[:space:]]*devices | awk -F ':' {'print $1'}) local LVM_INSERT_ROW_NUMBER=$(( $LVM_DEVICES_LINE_BEGIN + 1 )) echo "Inserting filter into [${PARAM_FILE}] row [${LVM_INSERT_ROW_NUMBER}]" sed -i "${LVM_INSERT_ROW_NUMBER}i ${THIS_STRING_CONTENT}" ${PARAM_FILE} else #replace existing filter local FILTER_LINE_NUMBER=$(cat ${PARAM_FILE} | grep -n -E ^[[:space:]]*filter | awk -F ':' {'print $1'}) echo "Replacing filter in [${PARAM_FILE}] row [${FILTER_LINE_NUMBER}]" sed -i "${FILTER_LINE_NUMBER}s!.*!${THIS_STRING_CONTENT}!" ${PARAM_FILE} fi else #we are processing a file local THIS_FILE_CONTENT=$(echo ${PARAM_VAL} | base64 -d) echo "Restoring file [${PARAM_FILE}] from pool configuration" if [ ${#THIS_FILE_CONTENT} -gt 0 ] then echo "${THIS_FILE_CONTENT}" > ${PARAM_FILE} else echo "Parameter [${PARAM_KEY}] is empty. Not restoring an empty file." fi fi } #End function restore_from_map ############################### ## function archive_config ## ## creates a tarball including ## all relevent configuration ## files in a 2-node ## hyperconverged HA-Lizard ## cluster/pool ############################## function archive_config () { local NOW=$(date +%s) local ARCHIVE_FILE="${ARCHIVE_FOLDER}/ha-lizard-nosan-conf-files-all-${NOW}.tgz" local TAR_EXEC="tar -czf ${ARCHIVE_FILE} " for filename in ${CONF_FILE_LIST[@]} do if [ -e $filename ] then echo "Adding [$filename] to archive" TAR_EXEC+="$filename " fi done echo "Creating archive [${ARCHIVE_FILE}]" ${TAR_EXEC} return $? } #End function archive_config ############################# ## Load shared functions ## and environment ############################# if [ -e ${ISCSI_HA_INIT} ] then source ${ISCSI_HA_INIT} else echo "Missing required environment [${ISCSI_HA_INIT}]" exit 1 fi if [ -e ${ISCSI_HA_FUNCTIONS} ] then source ${ISCSI_HA_FUNCTIONS} else echo "Missing shared functions [${ISCSI_HA_FUNCTIONS}]" exit 1 fi ############################# ## Insert config param if ## ! exist already ############################# for param in ${CONFIG_MAP[@]} do xe pool-param-get uuid=${POOL_UUID} param-name=other-config param-key=$param &>/dev/null RETVAL=$? if [ $RETVAL -ne 0 ] then echo "Adding missing configuration parameter [$param]" xe pool-param-add uuid=${POOL_UUID} param-name=other-config $param RETVAL=$? if [ $RETVAL -ne 0 ] then echo "Error adding parameter [$param}] to database" exit 1 fi fi done case ${THE_ACTION} in save) for param in ${CONFIG_MAP[@]} do FILE_NAME=$param FILE_NAME+=_FILE if [ -z ${!FILE_NAME} ] then continue fi echo "Processing [${!FILE_NAME}]" if [[ "${FILE_NAME}" != *LVM* ]] #########&& [[ "${FILE_NAME}" != *IPTABLES* ]] then insert_into_map "${param}" "${!FILE_NAME}" || warning "Error processig [${!FILE_NAME}]" else ########################### ## Special case for LVM ## we only store the filter ## for LVM ########################### if [[ "${FILE_NAME}" == *LVM* ]] then THIS_FILTER=$(cat ${!FILE_NAME} | grep -E ^[[:space:]]*filter) insert_into_map "${param}" "${THIS_FILTER}" || warning "Error processig [${!FILE_NAME}]" fi fi done ;; restore) ############################ ## Archive the current ## config before restoring ############################ archive_config for param in ${CONFIG_MAP[@]} do FILE_NAME=$param FILE_NAME+=_FILE #echo "Processing [${!FILE_NAME}]" restore_from_map "${param}" "${!FILE_NAME}" || warning "Error processig [${!FILE_NAME}]" done ;; delete) ########################### ## WARNING - this deletes ## all cofig data and ## keys from DB ########################### echo "W A R N I N G" echo "Are you sure you want to delete all database paameters and stored configuration data [y|n]?" read N1 if [ "$N1" = "y" ] then for key in ${CONFIG_MAP[@]} do echo "Removing [${key}]" xe pool-param-remove uuid=${POOL_UUID} param-name=other-config param-key=${key} done else echo "Exiting..." exit 0 fi ;; *) echo "[$1] is not a valid input paramter" ;; esac if [ "${SUCCESS}" = "false" ] then echo "Job completed with errors" exit 1 else echo "job completed successfully" exit 0 fi