#!/bin/bash
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# dependencies
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function check-postgresql-localhost-deps {
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if [ ! -e /usr/bin/pg_dump ]; then
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debug "It seems that you dont have psql installed. You may have problems to backup remote databases"
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fi
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numberRegex='^[0-9]+$'
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if ! [[ $(id -u postgres 2>&1) =~ $numberRegex ]] ; then
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debug "It seems that you dont have the user postgres on your computer. You may have problems to backup local postgres databases"
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fi
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}
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# PostgreSQL local
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function pg_local_all {
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# Debugoutput id DEBUG is enabled
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debug "Dump all from Postgres local"
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# Dump all databases in one file as user postgres (Debian)
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sudo -H -u postgres pg_dumpall > "$TMP_DIR"/local_dumpall.pgsql
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debug "Diff alldumps from Postgres local"
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# Check if there are differences between the actual dump and the last dump
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backup_file_handler "$TMP_DIR $BACKUP_DIR" local_dumpall.pgsql
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}
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function pg_local_single {
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# Get a list with all databases on localhost. Do it as user postgres (Debian)
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# parallelize the following
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for DB in $(sudo -H -u postgres /usr/bin/psql -At -c "SELECT datname FROM pg_database WHERE NOT datistemplate AND datallowconn ORDER BY datname;" postgres)
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do
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debug "Dumping local database $DB"
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# Dump each database in a single file
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sudo -H -u postgres /usr/bin/pg_dump -Fp "$DB" > "$TMP_DIR"/local_"$DB".pgsql
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backup_file_handler "$TMP_DIR" "$BACKUP_DIR" local_"$DB".pgsql
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echo ""
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done
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}
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# Do the local backupjobs
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function run_local_pg_backups {
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# Test if the current backupuser has access via sudo to postgres
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# This part has to be improved!
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sudo -l -U "$BACKUPUSER" | grep postgres
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if [ $? -eq 0 ];then
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# If the user has access vi sudo to postgres and a full dump is configured, do it.
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if [ "$POSTGRES_BACKUP_LOCAL_DUMP_ALL" == "TRUE" ]; then
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pg_local_all
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fi
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# If the user has access vi sudo to postgres and dumps for each database is configured , do it.
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if [ "$POSTGRES_BACKUP_LOCAL_SINGLE" == "TRUE" ]; then
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pg_local_single
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fi
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else
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# If the user is not permitted to acces the postgresdatabases vi sudo throw an errormessage
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echo "" | $LOGGER
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echo "The backupuser does not the permission to act as user postgres" | $LOGGER
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echo "Please add the following line to your /etc/sudoers:" | $LOGGER
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echo "backupuser ALL=(postgres) NOPASSWD:/usr/bin/psql,/usr/bin/pg_dump,/usr/bin/pg_dumpall" | $LOGGER
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echo "" | $LOGGER
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fi
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}
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################################################################################
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function postgresql-localhost-main {
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if [ "$POSTGRES_BACKUP_LOCAL" = "TRUE" ]; then
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run_local_pg_backups
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fi
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}
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