3)生成BASE BACKUP命令,并向主发送。得到wal起始位置xlogstart和起始时间线starttli,表空间个数tablespacecount和循环计算得到文件总数totalsize? 4)如果时流复制拉取,那么调用函数StartLogStreamer初始化后台进程用于接收WAL,会启动一个进程。 这里请求的开始时间线9.3及之后版本为BASE_BACKUP获取的时间线值,否则为IDENTIFY...
3.3.2 查看backup_label文件 cat /opt/data5412/backup_label START WAL LOCATION: 0/2000060 (file 000000010000000000000002) CHECKPOINT LOCATION: 0/2000098 BACKUP METHOD: streamed BACKUP FROM: master START TIME: 2020-10-21 16:57:06 CST LABEL: pg_basebackup base backup START TIMELINE: 1 1. 2. 3...
pg_basebackup --help pg_basebackup takes a base backup of a running PostgreSQL server. Usage: pg_basebackup [OPTION]... Options controlling the output: -D, --pgdata=DIRECTORY receive base backup into directory -F, --format=p|t output format (plain (default), tar) -r, --max-rate=RATE...
pg_basebackup takes a base backup of a running PostgreSQL server. Usage: pg_basebackup [OPTION]... Options controlling the output: -D, --pgdata=DIRECTORY receive base backup into directory 指定把备份写到那个目录,如果这个目录或这个目录路径中的各级父目录不存在,则pg_basebackup就会自动创建这个目录,...
在备份的开始时,需要向从中拿去备份的服务器写一个检查点。尤其在没有使用选项--checkpoint=fast时,这可能需要一点时间,在其间pg_basebackup看起来处于闲置状态。 那就有可能是checkpoint的阶段卡住了 /* * Start the actual backup */ PQescapeStringConn(conn, escaped_label, label, sizeof(escaped_label), &...
/opt/pg124/bin/pg_basebackup \ --pgdata=/home/postgres/databackup \ --host=/tmp --port=5412 --username=postgres \ --format=t --gzip --compress=9 \ --wal-method=fetch \ --verbose --progress pg_basebackup: initiating base backup, waiting for checkpoint to complete pg_basebackup: check...
/opt/pg124/bin/pg_basebackup \ --pgdata=/home/postgres/databackup \ --host=/tmp --port=5412 --username=postgres \ --format=t --gzip --compress=9 \ --wal-method=fetch \ --verbose --progress pg_basebackup: initiating base backup, waiting for checkpoint to complete pg_basebackup: check...
# 通过查询备份信息,可以定位删除操作的大概位置为003文件之后 $ more backup_label START WAL LOCATION: 0/3000028 (file 000000010000000000000003) CHECKPOINT LOCATION: 0/3000060 BACKUP METHOD: streamed BACKUP FROM: primary START TIME: 2024-09-14 11:16:19 CST LABEL: pg_basebackup base backup START TIM...
3.pg_stop_backup(); pg_basebackup工具对数据库实例级别进行物理备份,此工具需要超级用户权限或者replication权限,注意max_wal_sender的参数配置,因为pg_basebackup将至少消耗一个wal发送进程 在备库做一个基准备份 [postgres@localhost pg10]$ pg_basebackup -D /database/pg10/pg_root -Fp -Xs -v -P -h ...
${pgstandby_slotname}-bash-4.2$ cat backup_label.old //查看标签信息START WAL LOCATION: 0/2000028 (file 000000010000000000000002)CHECKPOINT LOCATION: 0/2000060BACKUP METHOD: streamedBACKUP FROM: masterSTART TIME: 2020-09-05 13:06:31 CSTLABEL: pg_basebackup base backupSTART TIMELINE: 1-bash-4.2...