Hackerspace PostgreSQL Atolyesi - 3
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The document agenda includes topics on PostgreSQL WAL concepts, streaming replication, point-in-time recovery (PITR), connection pooling with PgBouncer, backups and restores, and PostgreSQL internal tables. Configuration details are provided for setting up streaming replication between a master and slave node, and using PgBouncer for connection pooling. Backup and restore commands using pg_dump and pg_basebackup are also listed.
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PgBouncer
● /etc/pgbouncer/pgbouncer.ini
[databases]
hackerspc = host=127.0.0.1 port=5432 user=basri dbname=hackerspace
● /etc/pgbouncer/userlist.txt
“basri” “basri123”](https://image.slidesharecdn.com/postgresql-atolyesi-3-140728035812-phpapp02/85/Hackerspace-PostgreSQL-Atolyesi-3-6-320.jpg)
Hackerspace PostgreSQL Atolyesi - 3
- 1. PostgreSQL Atölyesi Erkin Çakar erk.cakar@gmail.com Hackerspace – 09.2013 3. oturum
- 2. 2 Ajanda ● PostgreSQL'de WAL kavramı ● PostgreSQL streaming replication ● Point-In-Time Recovery (PITR) ● PgBouncer ile bağlantı havuzlama ● Yedekleme/Geri yükleme ● PostgreSQL'in dahili tabloları
- 4. 4 PostgreSQL Streaming Replication ● postgresql.conf (master) wal_level = hot_standby max_wal_senders > 0 archive_mode = on archive_command = 'cp %p /data/wal_archive/%f' ● pg_hba.conf (master) host replication repuser 192.168.1.20/32 trust ● postgresql.conf (slave) hot_standby = on ● recovery.conf (slave) standby_mode = 'on' primary_conninfo = 'host=192.168.1.21 port=5432 user=repuser' trigger_file = '/tmp/trigger.file' restore_command = 'cp -i /data/wal_archive/%f %p '
- 5. 5 Point-In-Time Recovery (PITR) ● rm -rf /var/lib/pgsql/9.2/data/pg_xlog ● cp 0000000C0000000000000* /data/wal_recovery/ ● recovery.conf restore_command = 'cp -i /data/wal_recovery/%f %p' recovery_target_time = '2013-09-18 18:55:33' ● Tavsiye Araç: pgBarman
- 6. 6 PgBouncer ● /etc/pgbouncer/pgbouncer.ini [databases] hackerspc = host=127.0.0.1 port=5432 user=basri dbname=hackerspace ● /etc/pgbouncer/userlist.txt “basri” “basri123”
- 7. 7 Yedekleme/Geri Yükleme pg_dump -U postgres hackerspace -F c -f /backups/hackerspace20130920.dump pg_restore -U postgres -d hackerspace -j 4 /backups/hackerspace20130920.dump pg_basebackup -D /var/lib/pgsql/9.3/data -P -Ft -x -z -Z9 -c spread -l hackerspace -h 192.168.1.20 -U postgres > /tmp/bckp.log 2>&1
- 8. 8 PostgreSQL'in Dahili Tabloları ● pg_stat_activity ● pg_stat_bgwriter ● pg_stat_database ● pg_stat_user_tables / indexes ● pg_stat_replication ● pg_statistics / pg_stats