Add capabilitity to backup only a single database
This PS adds the capability to Mariadb and Postgresql to backup a single database (as an optional parameter to the backup script). Change-Id: I9bc1eb0173063638b2cf58465c063f602ed20bc1
This commit is contained in:
Parsons, Cliff (cp769u)
parent
ba601e0cba
commit
233197fc0b
@ -9,10 +9,12 @@
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# source /tmp/backup_main.sh
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#
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# Then the script should call the main backup function (backup_databases):
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# backup_databases
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# backup_databases [scope]
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# [scope] is an optional parameter, defaulted to "all". If only one specific
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# database is required to be backed up then this parameter will
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# contain the name of the database; otherwise all are backed up.
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#
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# No arguments required. However, the framework will require the
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# following variables to be exported:
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# The framework will require the following variables to be exported:
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#
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# export DB_NAMESPACE Namespace where the database(s) reside
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# export DB_NAME Name of the database system
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@ -44,12 +46,15 @@
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# is 1800 (30 minutes).
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#
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# The database-specific functions that need to be implemented are:
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# dump_databases_to_directory <directory> <err_logfile>
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# dump_databases_to_directory <directory> <err_logfile> [scope]
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# where:
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# <directory> is the full directory path to dump the database files
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# into. This is a temporary directory for this backup only.
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# <err_logfile> is the full directory path where error logs are to be
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# written by the application.
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# [scope] set to "all" if all databases are to be backed up; or
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# set to the name of a specific database to be backed up.
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# This optional parameter is defaulted to "all".
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# returns: 0 if no errors; 1 if any errors occurred
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#
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# This function is expected to dump the database file(s) to the specified
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@ -285,7 +290,11 @@ remove_old_remote_archives() {
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# 1) The directory where the final backup will be kept after it is compressed.
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# 2) A temporary directory to use for placing database files to be compressed.
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# Note: this temp directory will be deleted after backup is done.
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# 3) Optional "scope" parameter indicating what database to back up. Defaults
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# to "all".
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backup_databases() {
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SCOPE=${1:-"all"}
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# Create necessary directories if they do not exist.
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mkdir -p $ARCHIVE_DIR || log_backup_error_exit "Cannot create directory ${ARCHIVE_DIR}!"
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export TMP_DIR=$(mktemp -d) || log_backup_error_exit "Cannot create temp directory!"
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@ -294,7 +303,7 @@ backup_databases() {
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export ERR_LOG_FILE=$(mktemp -p /tmp) || log_backup_error_exit "Cannot create log file!"
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# It is expected that this function will dump the database files to the $TMP_DIR
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dump_databases_to_directory $TMP_DIR $ERR_LOG_FILE
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dump_databases_to_directory $TMP_DIR $ERR_LOG_FILE $SCOPE
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# If successful, there should be at least one file in the TMP_DIR
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if [[ $? -ne 0 || $(ls $TMP_DIR | wc -w) -eq 0 ]]; then
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@ -305,7 +314,7 @@ backup_databases() {
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log INFO "${DB_NAME}_backup" "Databases dumped successfully. Creating tarball..."
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NOW=$(date +"%Y-%m-%dT%H:%M:%SZ")
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TARBALL_FILE="${DB_NAME}.${DB_NAMESPACE}.all.${NOW}.tar.gz"
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TARBALL_FILE="${DB_NAME}.${DB_NAMESPACE}.${SCOPE}.${NOW}.tar.gz"
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cd $TMP_DIR || log_backup_error_exit "Cannot change to directory $TMP_DIR"
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@ -1,5 +1,7 @@
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#!/bin/bash
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SCOPE=${1:-"all"}
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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@ -28,6 +30,7 @@ export ARCHIVE_DIR=${MARIADB_BACKUP_BASE_DIR}/db/${DB_NAMESPACE}/${DB_NAME}/arch
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dump_databases_to_directory() {
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TMP_DIR=$1
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LOG_FILE=$2
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SCOPE=${3:-"all"}
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MYSQL="mysql \
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--defaults-file=/etc/mysql/admin_user.cnf \
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@ -36,9 +39,18 @@ dump_databases_to_directory() {
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MYSQLDUMP="mysqldump \
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--defaults-file=/etc/mysql/admin_user.cnf"
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MYSQL_DBNAMES=( $($MYSQL --silent --skip-column-names -e \
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"show databases;" | \
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egrep -vi 'information_schema|performance_schema|mysql') )
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if [[ "${SCOPE}" == "all" ]]; then
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MYSQL_DBNAMES=( $($MYSQL --silent --skip-column-names -e \
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"show databases;" | \
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egrep -vi 'information_schema|performance_schema|mysql') )
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else
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if [[ "${SCOPE}" != "information_schema" && "${SCOPE}" != "performance_schema" && "${SCOPE}" != "mysql" ]]; then
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MYSQL_DBNAMES=( ${SCOPE} )
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else
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log ERROR "It is not allowed to backup database ${SCOPE}."
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return 1
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fi
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fi
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#check if there is a database to backup, otherwise exit
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if [[ -z "${MYSQL_DBNAMES// }" ]]
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@ -50,19 +62,21 @@ dump_databases_to_directory() {
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#Create a list of Databases
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printf "%s\n" "${MYSQL_DBNAMES[@]}" > $TMP_DIR/db.list
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#Retrieve and create the GRANT file for all the users
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if [[ "${SCOPE}" == "all" ]]; then
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#Retrieve and create the GRANT file for all the users
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{{- if .Values.manifests.certificates }}
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SSL_DSN=";mysql_ssl=1"
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SSL_DSN="$SSL_DSN;mysql_ssl_client_key=/etc/mysql/certs/tls.key"
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SSL_DSN="$SSL_DSN;mysql_ssl_client_cert=/etc/mysql/certs/tls.crt"
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SSL_DSN="$SSL_DSN;mysql_ssl_ca_file=/etc/mysql/certs/ca.crt"
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if ! pt-show-grants --defaults-file=/etc/mysql/admin_user.cnf $SSL_DSN \
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SSL_DSN=";mysql_ssl=1"
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SSL_DSN="$SSL_DSN;mysql_ssl_client_key=/etc/mysql/certs/tls.key"
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SSL_DSN="$SSL_DSN;mysql_ssl_client_cert=/etc/mysql/certs/tls.crt"
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SSL_DSN="$SSL_DSN;mysql_ssl_ca_file=/etc/mysql/certs/ca.crt"
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if ! pt-show-grants --defaults-file=/etc/mysql/admin_user.cnf $SSL_DSN \
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{{- else }}
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if ! pt-show-grants --defaults-file=/etc/mysql/admin_user.cnf \
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if ! pt-show-grants --defaults-file=/etc/mysql/admin_user.cnf \
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{{- end }}
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2>>"$LOG_FILE" > "$TMP_DIR"/grants.sql; then
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log ERROR "Failed to create GRANT for all the users"
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return 1
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2>>"$LOG_FILE" > "$TMP_DIR"/grants.sql; then
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log ERROR "Failed to create GRANT for all the users"
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return 1
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fi
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fi
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#Retrieve and create the GRANT files per DB
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@ -82,22 +96,20 @@ dump_databases_to_directory() {
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done
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#Dumping the database
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DATE=$(date +'%Y-%m-%dT%H:%M:%SZ')
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SQL_FILE=mariadb.$MARIADB_POD_NAMESPACE.all
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TARBALL_FILE=${SQL_FILE}.${DATE}.tar.gz
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SQL_FILE=mariadb.$MARIADB_POD_NAMESPACE.${SCOPE}
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$MYSQLDUMP $MYSQL_BACKUP_MYSQLDUMP_OPTIONS "${MYSQL_DBNAMES[@]}" \
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> $TMP_DIR/${SQL_FILE}.sql 2>>$LOG_FILE
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if [[ $? -eq 0 && -s $TMP_DIR/${SQL_FILE}.sql ]]
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then
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log INFO "Databases dumped successfully."
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log INFO "Database(s) dumped successfully. (SCOPE = ${SCOPE})"
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return 0
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else
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log ERROR "Backup failed and need attention."
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log ERROR "Backup failed and need attention. (SCOPE = ${SCOPE})"
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return 1
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fi
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}
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# Call main program to start the database backup
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backup_databases
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backup_databases ${SCOPE}
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@ -83,9 +83,9 @@ get_tables() {
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TMP_DIR=$2
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TABLE_FILE=$3
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SQL_FILE=mariadb.$MARIADB_POD_NAMESPACE.all.sql
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if [[ -e $TMP_DIR/$SQL_FILE ]]; then
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current_db_desc ${DATABASE} ${TMP_DIR}/${SQL_FILE} \
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SQL_FILE=$TMP_DIR/mariadb.$MARIADB_POD_NAMESPACE.*.sql
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if [ -f $SQL_FILE ]; then
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current_db_desc ${DATABASE} ${SQL_FILE} \
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| grep "^CREATE TABLE" | awk -F '`' '{print $2}' \
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> $TABLE_FILE
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else
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@ -103,9 +103,9 @@ get_rows() {
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TMP_DIR=$3
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ROW_FILE=$4
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SQL_FILE=mariadb.$MARIADB_POD_NAMESPACE.all.sql
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if [[ -e $TMP_DIR/$SQL_FILE ]]; then
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current_db_desc ${DATABASE} ${TMP_DIR}/${SQL_FILE} \
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SQL_FILE=$TMP_DIR/mariadb.$MARIADB_POD_NAMESPACE.*.sql
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if [ -f $SQL_FILE ]; then
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current_db_desc ${DATABASE} ${SQL_FILE} \
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| grep "INSERT INTO \`${TABLE}\` VALUES" > $ROW_FILE
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return 0
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else
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@ -123,10 +123,10 @@ get_schema() {
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TMP_DIR=$3
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SCHEMA_FILE=$4
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SQL_FILE=mariadb.$MARIADB_POD_NAMESPACE.all.sql
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if [[ -e $TMP_DIR/$SQL_FILE ]]; then
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SQL_FILE=$TMP_DIR/mariadb.$MARIADB_POD_NAMESPACE.*.sql
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if [ -f $SQL_FILE ]; then
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DB_FILE=$(mktemp -p /tmp)
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current_db_desc ${DATABASE} ${TMP_DIR}/${SQL_FILE} > ${DB_FILE}
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current_db_desc ${DATABASE} ${SQL_FILE} > ${DB_FILE}
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sed -n /'CREATE TABLE `'$TABLE'`'/,/'--'/p ${DB_FILE} > ${SCHEMA_FILE}
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if [[ ! (-s ${SCHEMA_FILE}) ]]; then
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sed -n /'CREATE TABLE IF NOT EXISTS `'$TABLE'`'/,/'--'/p ${DB_FILE} \
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@ -193,8 +193,8 @@ restore_single_db() {
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return 1
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fi
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SQL_FILE=mariadb.$MARIADB_POD_NAMESPACE.all.sql
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if [[ -f ${TMP_DIR}/$SQL_FILE ]]
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SQL_FILE=$TMP_DIR/mariadb.$MARIADB_POD_NAMESPACE.*.sql
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if [ -f $SQL_FILE ]
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then
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# Restoring a single database requires us to create a temporary user
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# which has capability to only restore that ONE database. One gotcha
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@ -208,7 +208,7 @@ restore_single_db() {
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echo "Restore $SINGLE_DB_NAME failed create restore user."
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return 1
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fi
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$RESTORE_CMD --force < ${TMP_DIR}/$SQL_FILE 2>>$RESTORE_LOG
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$RESTORE_CMD --force < $SQL_FILE 2>>$RESTORE_LOG
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if [[ "$?" -eq 0 ]]
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then
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echo "Database $SINGLE_DB_NAME Restore successful."
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@ -254,10 +254,20 @@ restore_single_db() {
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restore_all_dbs() {
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TMP_DIR=$1
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SQL_FILE=mariadb.$MARIADB_POD_NAMESPACE.all.sql
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if [[ -f ${TMP_DIR}/$SQL_FILE ]]
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SQL_FILE=$TMP_DIR/mariadb.$MARIADB_POD_NAMESPACE.*.sql
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if [ -f $SQL_FILE ]
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then
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$MYSQL < ${TMP_DIR}/$SQL_FILE 2>$RESTORE_LOG
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# Check the scope of the archive.
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SCOPE=$(echo ${SQL_FILE} | awk -F'.' '{print $(NF-1)}')
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if [[ "${SCOPE}" != "all" ]]; then
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# This is just a single database backup. The user should
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# instead use the single database restore option.
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echo "Cannot use the restore all option for an archive containing only a single database."
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echo "Please use the single database restore option."
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return 1
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fi
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$MYSQL < $SQL_FILE 2>$RESTORE_LOG
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if [[ "$?" -eq 0 ]]
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then
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echo "Databases $( echo $DBS | tr -d '\n') Restore successful."
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@ -1,5 +1,7 @@
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#!/bin/bash
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SCOPE=${1:-"all"}
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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@ -40,27 +42,43 @@ export ARCHIVE_DIR=${POSTGRESQL_BACKUP_BASE_DIR}/db/${DB_NAMESPACE}/${DB_NAME}/a
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dump_databases_to_directory() {
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TMP_DIR=$1
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LOG_FILE=$2
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SCOPE=${3:-"all"}
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PG_DUMPALL_OPTIONS=$(echo $POSTGRESQL_BACKUP_PG_DUMPALL_OPTIONS | sed 's/"//g')
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PG_DUMP_OPTIONS=$(echo $POSTGRESQL_BACKUP_PG_DUMPALL_OPTIONS | sed 's/"//g')
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PG_DUMP="pg_dump \
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$PG_DUMP_OPTIONS --create \
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-U $POSTGRESQL_ADMIN_USER \
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-h $POSTGRESQL_SERVICE_HOST"
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PG_DUMPALL="pg_dumpall \
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$PG_DUMPALL_OPTIONS \
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$PG_DUMP_OPTIONS \
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-U $POSTGRESQL_ADMIN_USER \
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-h $POSTGRESQL_SERVICE_HOST"
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SQL_FILE=postgres.$POSTGRESQL_POD_NAMESPACE.all
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SQL_FILE=postgres.${POSTGRESQL_POD_NAMESPACE}.${SCOPE}
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cd $TMP_DIR
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#Dump all databases
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$PG_DUMPALL --file=${TMP_DIR}/${SQL_FILE}.sql 2>>$LOG_FILE
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if [[ "${SCOPE}" == "all" ]]; then
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# Dump all databases
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${PG_DUMPALL} --file=${TMP_DIR}/${SQL_FILE}.sql 2>>${LOG_FILE}
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else
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if [[ "${SCOPE}" != "postgres" && "${SCOPE}" != "template0" && "${SCOPE}" != "template1" ]]; then
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# Dump the specified database
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${PG_DUMP} --file=${TMP_DIR}/${SQL_FILE}.sql ${SCOPE} 2>>${LOG_FILE}
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else
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log ERROR "It is not allowed to backup up the ${SCOPE} database."
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return 1
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fi
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fi
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if [[ $? -eq 0 && -s "${TMP_DIR}/${SQL_FILE}.sql" ]]; then
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log INFO postgresql_backup "Databases dumped successfully."
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log INFO postgresql_backup "Database(s) dumped successfully. (SCOPE = ${SCOPE})"
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return 0
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else
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log ERROR "Backup of the postgresql database failed and needs attention."
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log ERROR "Backup of the postgresql database(s) failed and needs attention. (SCOPE = ${SCOPE})"
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return 1
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fi
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}
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# Call main program to start the database backup
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backup_databases
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backup_databases ${SCOPE}
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@ -38,9 +38,9 @@ get_databases() {
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TMP_DIR=$1
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DB_FILE=$2
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SQL_FILE=postgres.$POSTGRESQL_POD_NAMESPACE.all.sql
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if [[ -e $TMP_DIR/$SQL_FILE ]]; then
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grep 'CREATE DATABASE' $TMP_DIR/$SQL_FILE | awk '{ print $3 }' > $DB_FILE
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SQL_FILE=$TMP_DIR/postgres.$POSTGRESQL_POD_NAMESPACE.*.sql
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if [ -f $SQL_FILE ]; then
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grep 'CREATE DATABASE' $SQL_FILE | awk '{ print $3 }' > $DB_FILE
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else
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# Error, cannot report the databases
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echo "No SQL file found - cannot extract the databases"
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@ -55,9 +55,9 @@ get_tables() {
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TMP_DIR=$2
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TABLE_FILE=$3
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SQL_FILE=postgres.$POSTGRESQL_POD_NAMESPACE.all.sql
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if [[ -e $TMP_DIR/$SQL_FILE ]]; then
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cat $TMP_DIR/$SQL_FILE | sed -n /'\\connect '$DATABASE/,/'\\connect'/p | grep "CREATE TABLE" | awk -F'[. ]' '{print $4}' > $TABLE_FILE
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SQL_FILE=$TMP_DIR/postgres.$POSTGRESQL_POD_NAMESPACE.*.sql
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if [ -f $SQL_FILE ]; then
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cat $SQL_FILE | sed -n /'\\connect '$DATABASE/,/'\\connect'/p | grep "CREATE TABLE" | awk -F'[. ]' '{print $4}' > $TABLE_FILE
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else
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# Error, cannot report the tables
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echo "No SQL file found - cannot extract the tables"
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@ -73,9 +73,9 @@ get_rows() {
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TMP_DIR=$3
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ROW_FILE=$4
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SQL_FILE=postgres.$POSTGRESQL_POD_NAMESPACE.all.sql
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if [[ -e $TMP_DIR/$SQL_FILE ]]; then
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cat $TMP_DIR/$SQL_FILE | sed -n /'\\connect '${DATABASE}/,/'\\connect'/p > /tmp/db.sql
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SQL_FILE=$TMP_DIR/postgres.$POSTGRESQL_POD_NAMESPACE.*.sql
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if [ -f $SQL_FILE ]; then
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cat $SQL_FILE | sed -n /'\\connect '${DATABASE}/,/'\\connect'/p > /tmp/db.sql
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cat /tmp/db.sql | grep "INSERT INTO public.${TABLE} VALUES" > $ROW_FILE
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rm /tmp/db.sql
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else
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@ -93,10 +93,10 @@ get_schema() {
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TMP_DIR=$3
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SCHEMA_FILE=$4
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SQL_FILE=postgres.$POSTGRESQL_POD_NAMESPACE.all.sql
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if [[ -e $TMP_DIR/$SQL_FILE ]]; then
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SQL_FILE=$TMP_DIR/postgres.$POSTGRESQL_POD_NAMESPACE.*.sql
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if [ -f $SQL_FILE ]; then
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DB_FILE=$(mktemp -p /tmp)
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cat $TMP_DIR/$SQL_FILE | sed -n /'\\connect '${DATABASE}/,/'\\connect'/p > ${DB_FILE}
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cat $SQL_FILE | sed -n /'\\connect '${DATABASE}/,/'\\connect'/p > ${DB_FILE}
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cat ${DB_FILE} | sed -n /'CREATE TABLE public.'${TABLE}' ('/,/'--'/p > ${SCHEMA_FILE}
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cat ${DB_FILE} | sed -n /'CREATE SEQUENCE public.'${TABLE}/,/'--'/p >> ${SCHEMA_FILE}
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cat ${DB_FILE} | sed -n /'ALTER TABLE public.'${TABLE}/,/'--'/p >> ${SCHEMA_FILE}
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@ -239,9 +239,9 @@ restore_single_db() {
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return 1
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fi
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SQL_FILE=postgres.$POSTGRESQL_POD_NAMESPACE.all.sql
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if [[ -f $TMP_DIR/$SQL_FILE ]]; then
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extract_single_db_dump $TMP_DIR/$SQL_FILE $SINGLE_DB_NAME $TMP_DIR
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SQL_FILE=$TMP_DIR/postgres.$POSTGRESQL_POD_NAMESPACE.*.sql
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if [ -f $SQL_FILE ]; then
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extract_single_db_dump $SQL_FILE $SINGLE_DB_NAME $TMP_DIR
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if [[ -f $TMP_DIR/$SINGLE_DB_NAME.sql && -s $TMP_DIR/$SINGLE_DB_NAME.sql ]]; then
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# Drop connections first
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drop_connections ${SINGLE_DB_NAME}
|
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@ -308,15 +308,26 @@ restore_all_dbs() {
|
||||
rm -rf ${LOG_FILE}
|
||||
touch ${LOG_FILE}
|
||||
|
||||
SQL_FILE=postgres.$POSTGRESQL_POD_NAMESPACE.all.sql
|
||||
if [[ -f $TMP_DIR/$SQL_FILE ]]; then
|
||||
SQL_FILE=$TMP_DIR/postgres.$POSTGRESQL_POD_NAMESPACE.*.sql
|
||||
if [ -f $SQL_FILE ]; then
|
||||
|
||||
# Check the scope of the archive.
|
||||
SCOPE=$(echo ${SQL_FILE} | awk -F'.' '{print $(NF-1)}')
|
||||
if [[ "${SCOPE}" != "all" ]]; then
|
||||
# This is just a single database backup. The user should
|
||||
# instead use the single database restore option.
|
||||
echo "Cannot use the restore all option for an archive containing only a single database."
|
||||
echo "Please use the single database restore option."
|
||||
return 1
|
||||
fi
|
||||
|
||||
# First drop all connections on all databases
|
||||
drop_connections_on_all_dbs
|
||||
if [[ "$?" -ne 0 ]]; then
|
||||
return 1
|
||||
fi
|
||||
|
||||
$PSQL postgres -f $TMP_DIR/$SQL_FILE 2>>$LOG_FILE >> $LOG_FILE
|
||||
$PSQL postgres -f $SQL_FILE 2>>$LOG_FILE >> $LOG_FILE
|
||||
if [[ "$?" -eq 0 ]]; then
|
||||
if grep "ERROR:" ${LOG_FILE} > /dev/null 2>&1; then
|
||||
cat ${LOG_FILE}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user