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7355535ee1
The format option of pg_dump enables tar and custom archive file formats in addition to the default plain-text file containing SQL commands. When either the tar or custom format are selected the behaviour of database=all is changed to no longer dump a single file via pg_dumpall. Instead pg_dumpall is called once to export the "global" data (roles & tablespaces) and then pg_dump is called once for each non-template table in the database. To support the GZIP and GZIP_OPTS variables in backupninja and to give the default --rsyncable gzip compression flag a chance at working on a PostgreSQL backup, the custom output is forced to not use compression. Instead compression is done via a pipe to gzip. Hopefully this benefits rsync and rdiff-backup style backups for reduced backup and storage costs that outweigh the restoration ones.
139 lines
4.7 KiB
Bash
139 lines
4.7 KiB
Bash
# -*- mode: sh; sh-basic-offset: 3; indent-tabs-mode: nil; -*-
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# vim: set filetype=sh sw=3 sts=3 expandtab autoindent:
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HELPERS="$HELPERS pgsql:postgresql_database_backup"
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do_pgsql_vserver() {
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choose_one_vserver "$pgsql_title"
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[ $? = 0 ] || return 1
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pgsql_vsname="vsname = $REPLY"
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}
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do_pgsql_databases() {
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REPLY=
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while [ -z "$REPLY" ]; do
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formBegin "$pgsql_title: databases"
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formItem "Database:"
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formItem "Database:"
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formItem "Database:"
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formItem "Database:"
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formItem "Database:"
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formItem "Database:"
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formItem "Database:"
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formItem "Database:"
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formItem "Database:"
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formItem "Database:"
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formDisplay
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[ $? = 0 ] || return 1
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pgsql_databases="databases = "
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for i in $REPLY; do
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[ -n "$i" ] && pgsql_databases="$pgsql_databases $i"
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done
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done
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}
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pgsql_wizard() {
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# constants
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pgsql_title="PostgreSQL action wizard"
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# backup the host system or a Vserver?
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choose_host_or_one_vserver "$pgsql_title"
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[ $? = 0 ] || return 1
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if [ $host_or_vservers == vservers ]; then
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do_pgsql_vserver
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[ $? = 0 ] || return 1
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fi
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# backupdir
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inputBox "$pgsql_title" "Directory where to store the backups:`[ -z \"$pgsql_vsname\" ] || echo \"\n(In respect to chosen vserver's root directory)\"`" "/var/backups/postgres"
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[ $? = 1 ] && return
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pgsql_backupdir="backupdir = $REPLY"
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# databases
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booleanBox "$pgsql_title" "Do you want to backup the whole cluster? If not, you'll be offered to choose the databases to backup."
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if [ $? = 0 ]; then
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pgsql_databases="databases = all"
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else
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do_pgsql_databases
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[ $? = 0 ] || return 1
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fi
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# compress
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booleanBox "$pgsql_title" "Do you want to compress the backups?"
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if [ $? = 0 ]; then
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pgsql_compress="compress = yes"
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else
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pgsql_compress="compress = no"
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fi
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# pg_dump format, defaults to plain, custom is recommended by PostgreSQL
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menuBox "$pgsql_title" "Choose a pg_dump format:" \
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plain "Default plain-text sql script, use with psql." \
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tar "More flexible than the plain, use with pg_restore." \
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custom "The most flexible format, use with pg_restore."
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if [ $? = 0 ]; then
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result="$REPLY"
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case "$result" in
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"tar") pgsql_format="format = tar";;
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"custom") pgsql_format="format = custom";;
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*) pgsql_format = "format = plain";;
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esac
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fi
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# write config file
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get_next_filename $configdirectory/20.pgsql
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cat >> $next_filename <<EOF
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### backupninja PostgreSQL config file ###
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# vsname = <vserver> (no default)
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# what vserver to operate on, only used if vserver = yes in /etc/backupninja.conf
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# if you do not specify a vsname the host will be operated on
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# Note: if operating on a vserver, $VROOTDIR will be prepended to backupdir.
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EOF
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if [ $host_or_vservers == vservers ]; then
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echo -e "$pgsql_vsname\n" >> $next_filename
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fi
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cat >> $next_filename <<EOF
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# backupdir = <dir> (default: /var/backups/postgres)
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# where to dump the backups
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$pgsql_backupdir
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# databases = < all | db1 db2 db3 > (default = all)
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# which databases to backup. should either be the word 'all' or a
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# space separated list of database names.
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# Note: when using 'all', pg_dumpall is used instead of pg_dump, which means
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# that cluster-wide data (such as users and groups) are saved.
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$pgsql_databases
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# compress = < yes | no > (default = yes)
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# if yes, compress the pg_dump/pg_dumpall output.
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$pgsql_compress
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# format = < plain | tar | custom > (default = plain)
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# plain - Output a plain-text SQL script file with the extension .sql.
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# When dumping all databases, a single file is created via pg_dumpall.
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# tar - Output a tar archive suitable for input into pg_restore. More
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# flexible than plain and can be manipulated by standard Unix tools
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# such as tar. Creates a globals.sql file and an archive per database.
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# custom - Output a custom PostgreSQL pg_restore archive. This is the most
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# flexible format allowing selective import and reordering of database
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# objects at the time the database is restored via pg_restore. This
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# option creates a globals.sql file containing the cluster role and
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# other information dumped by pg_dumpall -g and a pg_restore file
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# per selected database. See the pg_dump and pg_restore man pages.
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$pgsql_format
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### You can also set the following variables in backupninja.conf:
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# PSQL: psql path (default: /usr/bin/psql)
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# PGSQLDUMP: pg_dump path (default: /usr/bin/pg_dump)
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# PGSQLDUMPALL: pg_dumpall path (default: /usr/bin/pg_dumpall)
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# PGSQLUSER: user running PostgreSQL (default: postgres)
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EOF
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chmod 600 $next_filename
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}
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