postgresql-9.3的增量备份

1.修改postgresql.conf

vim /var/lib/pgsql/9.3/data/postgresql.conf，修改以下内容：

wal_level = archive

archive_mode = on

archive_command = 'test ! -f /data/pgsql-9.3-backup/increament/%f && cp %p /data/pgsql-9.3-backup/increament/%f'

max_wal_senders = 4

wal_keep_segments = 4

2.重启postgresql

service postgresql restart

3.创建备份用户

su - postgresql

psql

  db=>create role replicator login password 'password';
  db=>alter role replicator replication;

4.修改pg_hba.conf

vim /var/lib/pgsql/9.3/data/pg_hba.conf

增加一行：host replication replicator 127.0.0.1/32 md5

5. 得到基础备份

pg_basebackup -D basebackup -U replicator -P -x -R -Ft -z -h 127.0.0.1 -l 20150715