====== Tantor ======
~~NOTOC~~
Si vous effectuez des opérations sur Tantor, merci de vous connectez sur **#postgresqlfr-admin** pour vérifier que personne n'a eu la même idée que vous au même moment !
Merci de respecter les [[règles de base]]
voir aussi -> [[Celeste]]
===== Roles =====
Serveur postgresql esclave.
===== Log =====
==== mises à jour ====
* 9.3.5 le 19/08/2014 par rjuju
==== 5 juin 2012 : install par damien ====
Paquets installés : visudo vim screen
config de base :
* IP : 95.142.169.64 / 2001:4b98:dc0:47:216:3eff:fe22:7666
* CPU : 5 coeurs
* RAM : 1080Mo
* Datacenter : Paris
* distro : debian linux 6 64 bits
==== Mise à jour en 9.3 le 29/04/2014 par rjuju ====
Configuration de postgres:
postgres@tantor:~$ grep -Ev '^\s*(#.*)?$' /etc/postgresql/9.3/main/postgresql.conf
data_directory = '/var/lib/postgresql/9.3/main' # use data in another directory
hba_file = '/etc/postgresql/9.3/main/pg_hba.conf' # host-based authentication file
ident_file = '/etc/postgresql/9.3/main/pg_ident.conf' # ident configuration file
external_pid_file = '/var/run/postgresql/9.3-main.pid' # write an extra PID file
listen_addresses = '*' # what IP address(es) to listen on;
port = 5432 # (change requires restart)
max_connections = 100 # (change requires restart)
unix_socket_directories = '/var/run/postgresql' # comma-separated list of directories
ssl = true # (change requires restart)
ssl_cert_file = '/etc/ssl/certs/ssl-cert-snakeoil.pem' # (change requires restart)
ssl_key_file = '/etc/ssl/private/ssl-cert-snakeoil.key' # (change requires restart)
shared_buffers = 128MB # min 128kB
wal_level = hot_standby # minimal, archive, or hot_standby
checkpoint_completion_target = 0.9 # checkpoint target duration, 0.0 - 1.0
archive_mode = on # allows archiving to be done
archive_command = 'rsync -a %p postgres@celeste.postgresql.fr:/data/backups/postgresql/xlog/%f' # command to use to archive a logfile segment
max_wal_senders = 3 # max number of walsender processes
log_checkpoints = on
log_connections = on
log_disconnections = on
log_line_prefix = '%t [%p]: [%l-1] db=%d,user=%u ' # special values:
log_timezone = 'localtime'
datestyle = 'iso, dmy'
timezone = 'localtime'
lc_messages = 'C' # locale for system error message
lc_monetary = 'fr_FR.UTF-8' # locale for monetary formatting
lc_numeric = 'fr_FR.UTF-8' # locale for number formatting
lc_time = 'fr_FR.UTF-8' # locale for time formatting
default_text_search_config = 'pg_catalog.french'
Crontabs :
postgres@tantor:~$ crontab -l
# m h dom mon dow command
#0 1 * * * pg_dumpall | gzip -c > /var/backups/postgresql/pgsql.daily.sql.gz
#0 2 * * 1 pg_dumpall | gzip -c > /var/backups/postgresql/pgsql.weekly.sql.gz
#0 3 1 * * pg_dumpall | gzip -c > /var/backups/postgresql/pgsql.monthly.sql.gz
#0 4 * 1 * pg_dumpall | gzip -c > /var/backups/postgresql/pgsql.yearly.sql.gz
#0 5 * * * /var/lib/postgresql/backup_pitr.sh
# export vers Tantor
#0 6 * * * rsync -av --delete /var/backups/postgresql/* tantor.postgresql.fr:/var/backups/postgres-celeste/
# purge des backups
0 7 * * * /var/lib/postgresql/purge_pitr.sh
Script de sauvegarde PITR:
#!/bin/bash
SRVDEST="celeste.postgresql.fr"
VERSION="9.3"
INST="main"
SNAPNAME="snapshot_$(date '+%Y_%m_%d_%H_%M_%S')"
PGDIR="/var/lib/postgresql/${VERSION}/${INST}/"
DESTDIR="/data/backups/postgresql/snapshot/${SNAPNAME}/"
rc=0
psql --cluster ${VERSION}/${INST} -c "SELECT pg_start_backup('${SNAPNAME}')"
if [ $? -ne 0 ]; then
echo "Unable to start backup !"
exit 1
fi
rsync -avp --exclude "pg_xlog/*" ${PGDIR} postgres@${SRVDEST}:${DESTDIR}
if [ $? -ne 0 ]; then
echo "Error during rsync of ${PGDIR} to postgres@${SRVDEST}:${DESTDIR} !"
rc=1
fi
psql --cluster ${VERSION}/${INST} -c "SELECT pg_stop_backup()"
if [ $? -ne 0 ]; then
echo "Unable to stop backup !"
rc=1
fi
exit ${rc}
Script de purge PITR :
#!/bin/bash
RETENTION=5
# Suppression des snapshots de plus de $RETENTION jours
find /data/backups/postgresql/snapshot/ -maxdepth 1 -type d -name "snapshot_*" -mtime +${RETENTION} -print -exec rm -rf {} \;
# Suppression des WAL de plus de $RETENTION jours
find /data/backups/postgresql/xlog/ -type f -mtime +${RETENTION} -print -delete
Recovery.conf :
standby_mode = on
primary_conninfo = 'host=celeste.postgresql.fr port=5432 user=repli'
restore_command = 'cp /data/backups/postgresql/xlog/%f %p'
# pas de cleanup comme on a une sauvegarde pitr, ils seront purgés par le cron PITR
# pas de trigger file
Template de recovery.conf :
standby_mode = on
primary_conninfo = 'host=celeste.postgresql.fr port=5432 user=repli'
restore_command = 'cp /data/backups/postgresql/xlog/%f %p'
# pas de cleanup comme on a une sauvegarde pitr, ils seront purgés par le cron PITR
# pas de trigger file
Liens symboliques :
* /data -> /srv/data_tantor
* /var/lib/postgresql -> /data/var/lib/postgresql/
* /var/log -> /data/var/log/
* /var/www -> /data/var/www/