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openGauss备份恢复
2021-09-20openGauss备份恢复
openGauss 备份恢复
gs_probackup
docker
- 1.0.1
docker run --name brm_opengauss \ --privileged=true -d -e GS_PASSWORD=mtkOP@123 \ -v `pwd`/conf/brm.yaml:/etc/brm.yaml \ -v `pwd`/var/lib/brm:/var/lib/brm \ -v `pwd`/var/log/brm:/var/log/brm \ enmotech/opengauss:1.0.11.1.0
docker run --name brm_opengauss_1230 \ --privileged=true -d -e GS_PASSWORD=mtkOP@123 \ -v `pwd`/conf/brm.yaml:/etc/brm.yaml \ -v `pwd`/var/lib/brm:/var/lib/brm \ -v `pwd`/var/log/brm:/var/log/brm \ enmotech/opengauss:1.1.0
初始化
export BACKUP_PATH=/home/omm/backup
gs_probackup init
添加实例
gs_probackup add-instance --instance testdb --pgdata <openData的数据目录>
备份
gs_probackup backup --instance testdb -b full
配置数据库归档
设置参数
目录为 <gs_probackup 的 backup_path>/wal/
archive_mode = on
archive_command = 'cp %p <gs_probackup的backup_path>/wal/<instance>/%f'
# cp %p /usr/local/pgsql/data/pg_archive/%f'
查看备份
gs_probackup show --instance testdb
查看归档备份
gs_probackup show --instance testdb --archive
恢复
gs_probackup restore -B backup-path --instance=instance_name
[-D pgdata-path] [-i backup-id] [-j threads_num] [--progress]
[--force] [--no-sync] [--no-validate] [--skip-block-validation]
[--external-mapping=OLDDIR=NEWDIR] [-T OLDDIR=NEWDIR]
[--skip-external-dirs] [-I incremental_mode]
[--recovery-target-time=time|--recovery-target-xid=xid
|--recovery-target-lsn=lsn|--recovery-target-name=target-name]
[--recovery-target-inclusive=boolean]
[--recovery-target-timeline=timeline]
[--recovery-target=immediate|latest]
[--recovery-target-action=pause|promote|shutdown]
[--restore-command=cmdline]
[--remote-proto=protocol] [--remote-host=destination]
[--remote-path=path] [--remote-user=username]
[--remote-port=port] [--ssh-options=ssh_options]
[--log-level-console=log-level-console]
[--log-level-file=log-level-file]
[--log-filename=log-filename]
[--error-log-filename=error-log-filename]
[--log-directory=log-directory]
[--log-rotation-size=log-rotation-size]
[--log-rotation-age=log-rotation-age]
-B, --backup-path=backup-path location of the backup storage area
--instance=instance_name name of the instance
-D, --pgdata=pgdata-path location of the database storage area
-i, --backup-id=backup-id backup to restore
-j, --threads=threads_num number of parallel threads
--progress show progress
--force ignore invalid status of the restored backup
--no-sync do not sync restored files to disk
--no-validate disable backup validation during restore
--skip-block-validation set to validate only file-level checksum
--external-mapping=OLDDIR=NEWDIR
relocate the external directory from OLDDIR to NEWDIR
-T, --tablespace-mapping=OLDDIR=NEWDIR
relocate the tablespace from directory OLDDIR to NEWDIR
--skip-external-dirs do not restore all external directories
-I, --incremental-mode=none|checksum|lsn
reuse valid pages available in PGDATA if they have not changed
(default: none)
场景
环境配置
gs_probackup export BACKUP_PATH=/var/lib/brm gs_probackup init gs_probackup add-instance --instance testdb01 -D /var/lib/opengauss/data gs_probackup set-config --instance testdb01 --pgdatabase postgres gs_probackup show-config --instance testdb01 # Backup instance information pgdata = /var/lib/opengauss/data system-identifier = 6910097200378281726 # Connection parameters pgdatabase = postgres # Archive parameters archive-timeout = 5min # Logging parameters log-level-console = LOG log-level-file = OFF log-filename = pg_probackup.log log-rotation-size = 0TB log-rotation-age = 0d # Retention parameters retention-redundancy = 0 retention-window = 0 wal-depth = 0 # Compression parameters compress-algorithm = none compress-level = 1 # Remote access parameters remote-proto = ssh数据库设置
[omm@0150b32d2461 ~]$ gsql gsql ((openGauss 1.0.1 build e9da9fb9) compiled at 2020-10-01 13:58:32 commit 0 last mr ) Non-SSL connection (SSL connection is recommended when requiring high-security) Type "help" for help. omm=# show archive_mode; archive_mode -------------- on (1 row) omm=# show archive_command; archive_command ------------------------------------ cp %p /var/lib/brm/wal/testdb01/%f (1 row) omm=# select pg_switch_xlog(); pg_switch_xlog ---------------- 0/72000150 (1 row)查看归档
[omm@0150b32d2461 ~]$ ls -l /var/lib/brm/wal/testdb01/ total 49152 -rw------- 1 omm omm 16777216 Jan 11 03:30 00000001000000000000002F -rw------- 1 omm omm 16777216 Jan 11 03:30 000000010000000000000071 -rw------- 1 omm omm 16777216 Jan 11 03:30 000000010000000000000072模拟基础环境
[omm@0150b32d2461 ~]$ gsql gsql ((openGauss 1.0.1 build e9da9fb9) compiled at 2020-10-01 13:58:32 commit 0 last mr ) Non-SSL connection (SSL connection is recommended when requiring high-security) Type "help" for help. omm=# create table brm_test(t timestamp); CREATE TABLE omm=# insert into brm_test values(now()); INSERT 0 1 omm=# select * from brm_test; t ---------------------------- 2021-01-11 03:33:40.737837 2021-01-11 03:38:46.32794 2021-01-11 03:39:42.466014 2021-01-11 03:40:02.816579 2021-01-11 07:29:21.98839 (5 rows)全备份
[omm@0150b32d2461 ~]$ gs_probackup backup --instance testdb01 -b full INFO: Backup start, pg_probackup version: 2.4.2, instance: testdb01, backup ID: QMRFD9, backup mode: FULL, wal mode: STREAM, remote: false, compress-algorithm: none, compress-level: 1 LOG: Backup destination is initialized WARNING: This PostgreSQL instance was initialized without data block checksums. pg_probackup have no way to detect data block corruption without them. Reinitialize PGDATA with option '--data-checksums'. LOG: Database backup start LOG: started streaming WAL at 0/86000000 (timeline 1) check identify system success send START_REPLICATION 0/86000000 success keepalive message is received INFO: PGDATA size: 317MB INFO: Start transferring data files LOG: Creating page header map "/var/lib/brm/backups/testdb01/QMRFD9/page_header_map" keepalive message is received keepalive message is received keepalive message is received keepalive message is received keepalive message is received keepalive message is received keepalive message is received keepalive message is received keepalive message is received keepalive message is received keepalive message is received keepalive message is received keepalive message is received keepalive message is received keepalive message is received keepalive message is received INFO: Data files are transferred, time elapsed: 31s INFO: wait for pg_stop_backup() keepalive message is received INFO: pg_stop backup() successfully executed LOG: stop_lsn: 0/860001D0 LOG: Looking for LSN 0/860001D0 in segment: 000000010000000000000086 LOG: Found WAL segment: /var/lib/brm/backups/testdb01/QMRFD9/database/pg_xlog/000000010000000000000086 LOG: Thread [0]: Opening WAL segment "/var/lib/brm/backups/testdb01/QMRFD9/database/pg_xlog/000000010000000000000086" LOG: Found LSN: 0/860001D0 (null): not renaming 000000010000000000000087, segment is not complete. LOG: finished streaming WAL at 0/87000130 (timeline 1) LOG: Getting the Recovery Time from WAL LOG: Thread [0]: Opening WAL segment "/var/lib/brm/backups/testdb01/QMRFD9/database/pg_xlog/000000010000000000000086" INFO: Syncing backup files to disk INFO: Backup files are synced, time elapsed: 2s INFO: Validating backup QMRFD9 INFO: Backup QMRFD9 data files are valid INFO: Backup QMRFD9 resident size: 349MB INFO: Backup QMRFD9 completed模拟增量数据
gsql ((openGauss 1.0.1 build e9da9fb9) compiled at 2020-10-01 13:58:32 commit 0 last mr ) Non-SSL connection (SSL connection is recommended when requiring high-security) Type "help" for help. omm=# select pg_current_xlog_location(), pg_xlogfile_name(pg_current_xlog_location()), pg_xlogfile_name(pg_current_xlog_location()), txid_current(), now();omm-# omm-# omm-# omm-# pg_current_xlog_location | pg_xlogfile_name | pg_xlogfile_name | txid_current | now --------------------------+--------------------------+--------------------------+--------------+------------------------------- 0/87000130 | 000000010000000000000087 | 000000010000000000000087 | 11209 | 2021-01-11 07:57:25.414668+00 (1 row) omm=# select pg_switch_xlog(); pg_switch_xlog ---------------- 0/870001D0 (1 row) omm=# insert into brm_test values(now()); INSERT 0 1 omm=# select pg_current_xlog_location(), pg_xlogfile_name(pg_current_xlog_location()), pg_xlogfile_name(pg_current_xlog_location()), txid_current(), now(); omm-# omm-# omm-# omm-# pg_current_xlog_location | pg_xlogfile_name | pg_xlogfile_name | txid_current | now --------------------------+--------------------------+--------------------------+--------------+------------------------------- 0/88000208 | 000000010000000000000088 | 000000010000000000000088 | 11211 | 2021-01-11 07:57:40.428398+00 (1 row) omm=# select pg_switch_xlog(); pg_switch_xlog ---------------- 0/880002A8 (1 row) omm=# select pg_switch_xlog(); pg_switch_xlog ---------------- 0/89000150 (1 row) omm=# insert into brm_test values(now()); INSERT 0 1 omm=# omm=# select pg_current_xlog_location(), pg_xlogfile_name(pg_current_xlog_location()), pg_xlogfile_name(pg_current_xlog_location()), txid_current(), now();omm-# omm-# omm-# omm-# pg_current_xlog_location | pg_xlogfile_name | pg_xlogfile_name | txid_current | now --------------------------+--------------------------+--------------------------+--------------+------------------------------- 0/8A000208 | 00000001000000000000008A | 00000001000000000000008A | 11213 | 2021-01-11 07:58:06.702327+00 (1 row) omm=# select pg_switch_xlog(); pg_switch_xlog ---------------- 0/8A0002A8 (1 row) omm=# select pg_current_xlog_location(), pg_xlogfile_name(pg_current_xlog_location()), pg_xlogfile_name(pg_current_xlog_location()), txid_current(), now(); omm-# omm-# omm-# omm-# pg_current_xlog_location | pg_xlogfile_name | pg_xlogfile_name | txid_current | now --------------------------+--------------------------+--------------------------+--------------+------------------------------- 0/8B000130 | 00000001000000000000008B | 00000001000000000000008B | 11214 | 2021-01-11 07:58:15.204024+00 (1 row) omm=#查看备份信息
[omm@0150b32d2461 ~]$ gs_probackup show --archive ARCHIVE INSTANCE 'testdb01' =============================================================================================================================== TLI Parent TLI Switchpoint Min Segno Max Segno N segments Size Zratio N backups Status =============================================================================================================================== 1 0 0/0 000000010000000000000086 00000001000000000000008A 5 80MB 1.00 1 OK [omm@0150b32d2461 ~]$ gs_probackup show BACKUP INSTANCE 'testdb01' =================================================================================================================================== Instance Version ID Recovery Time Mode WAL Mode TLI Time Data WAL Zratio Start LSN Stop LSN Status =================================================================================================================================== testdb01 9.2 QMRFD9 2021-01-11 07:56:30+00 FULL STREAM 1/0 41s 333MB 16MB 0.95 0/86000028 0/860001D0 OK基于时间点的恢复
恢复全量备份 —> 2 .用户指定了 xid/time/lsn. brm 进行遍历所有备份,找出最近的备份集通过 gs_probackup 进行恢复
[omm@0150b32d2461 ~]$ gs_probackup restore --instance testdb01 -D /home/omm/a1/ -i QMRFD9 LOG: Restore begin. LOG: there is no file tablespace_map LOG: check tablespace directories of backup QMRFD9 LOG: check external directories of backup QMRFD9 INFO: Validating backup QMRFD9 INFO: Backup QMRFD9 data files are valid LOG: Thread [1]: Opening WAL segment "/var/lib/brm/backups/testdb01/QMRFD9/database/pg_xlog/000000010000000000000086" INFO: Backup QMRFD9 WAL segments are valid INFO: Backup QMRFD9 is valid. INFO: Restoring the database from backup at 2021-01-11 07:55:57+00 LOG: there is no file tablespace_map LOG: Restore directories and symlinks... INFO: Start restoring backup files. PGDATA size: 333MB LOG: Start thread 1 INFO: Backup files are restored. Transfered bytes: 349MB, time elapsed: 2s INFO: Restore incremental ratio (less is better): 105% (349MB/333MB) INFO: Syncing restored files to disk INFO: Restored backup files are synced, time elapsed: 0 INFO: Restore of backup QMRFD9 completed.编辑 recover.conf —> 3. 如果没有指定 time/lsn/xid 不生成 recover.conf 文件.如果指定了生成 recover.conf.
vi a1/recover.conf # recovery_target_time = '2021-01-11 03:40:02+00' recovery_target_lsn = '0/880002A8' #recovery_target_action = 'pause' %p --> pg_xlog/000000010000000000000001 %f --> 000000010000000000000001 restore_command = 'cp /var/lib/brm/wal/testdb01/%f %p' # restore_command = 'brm get-wal -f %f -p %p' pause_at_recovery_target = true编辑配置文件（同一台防止端口冲突关闭归档 —> 4. 是否需要配置 postgres.conf 文件
echo "port=6433" >> a1/postgresql.conf echo "archive_mode=off" >> a1/postgresql.conf启动实例
gs_ctl start -D /home/omm/a1 —> 5. 恢复成功进行 gs_ctl start -D 恢复目录
[2021-01-11 08:14:56.533][313][][gs_ctl]: gs_ctl started,datadir is -D "/home/omm/a1" [2021-01-11 08:14:56.576][313][][gs_ctl]: port:5432 already in use. /proc/net/tcp: sl local_address rem_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode 0: 00000000:1538 00000000:0000 0A 00000000:00000000 00:00000000 00000000 70 0 2236132 1 0000000000000000 100 0 0 10 0 [2021-01-11 08:14:56.576][313][][gs_ctl]: CheckPort: popen(command:lsof -i:5432 | grep -E 'COMMAND|LISTEN'). COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME GaussMast 1 omm 7u IPv4 2236132 0t0 TCP *:postgres (LISTEN) GaussMast 1 omm 8u IPv6 2236133 0t0 TCP *:postgres (LISTEN) [2021-01-11 08:14:56.673][313][][gs_ctl]: port conflict when start server [2021-01-11 08:14:56.674][313][][gs_ctl]: waiting for server to start... .0 LOG: The core dump path in core_pattern is an invalid directory. 0 [BACKEND] LOG: Begin to start openGauss Database. 2021-01-11 08:14:56.761 [unknown] [unknown] localhost 139701065868352 0 0 [BACKEND] LOG: Transparent encryption disabled. 2021-01-11 08:14:56.763 [unknown] [unknown] localhost 139701065868352 0 0 [BACKEND] WARNING: could not create any HA TCP/IP sockets 2021-01-11 08:14:56.765 [unknown] [unknown] localhost 139701065868352 0 0 [BACKEND] WARNING: No explicit IP is configured for listen_addresses GUC. 2021-01-11 08:14:56.765 [unknown] [unknown] localhost 139701065868352 0 0 [BACKEND] LOG: InitNuma numaNodeNum: 1 numa_distribute_mode: none inheritThreadPool: 0. 2021-01-11 08:14:56.765 [unknown] [unknown] localhost 139701065868352 0 0 [BACKEND] LOG: shared memory 321 Mbytes, memory context 11454 Mbytes, max process memory 12288 Mbytes 2021-01-11 08:14:56.765 [unknown] [unknown] localhost 139701065868352 0 0 [BACKEND] LOG: Initilize the memory protect with Process Chunks number 11454, change bits 20 2021-01-11 08:14:56.785 [unknown] [unknown] localhost 139701065868352 0 0 [CACHE] LOG: set data cache size(402653184) 2021-01-11 08:14:56.796 [unknown] [unknown] localhost 139701065868352 0 0 [CACHE] LOG: set metadata cache size(134217728) 2021-01-11 08:14:56.848 [unknown] [unknown] localhost 139701065868352 0 0 [BACKEND] LOG: gaussdb: fsync file "/home/omm/a1/gaussdb.state.temp" success 2021-01-11 08:14:56.849 [unknown] [unknown] localhost 139701065868352 0 0 [BACKEND] LOG: create gaussdb state file success: db state(STARTING_STATE), server mode(Normal) 2021-01-11 08:14:56.908 [unknown] [unknown] localhost 139701065868352 0 0 [BACKEND] LOG: max_safe_fds = 976, usable_fds = 1000, already_open = 14 2021-01-11 08:14:56.909 [unknown] [unknown] localhost 139701065868352 0 0 [BACKEND] LOG: The core dump path in core_pattern is an invalid directory. 2021-01-11 08:14:56.910 [unknown] [unknown] localhost 139701065868352 0 0 [BACKEND] LOG: Success to start openGauss Database. If you specify "&", please press any key to exit... [2021-01-11 08:14:57.675][313][][gs_ctl]: waitpid 319 failed, exitstatus is 256, ret is 2 [2021-01-11 08:14:57.675][313][][gs_ctl]: stopped waiting [2021-01-11 08:14:57.675][313][][gs_ctl]: could not start server [2021-01-11 08:14:57.675][313][][gs_ctl]: Examine the log output. [omm@0150b32d2461 ~]$ vi a1/recovery.conf [omm@0150b32d2461 ~]$ gs_ctl start -D /home/omm/a1/ [2021-01-11 08:15:29.342][352][][gs_ctl]: gs_ctl started,datadir is -D "/home/omm/a1" [2021-01-11 08:15:29.401][352][][gs_ctl]: port:5432 already in use. /proc/net/tcp: sl local_address rem_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode 0: 00000000:1538 00000000:0000 0A 00000000:00000000 00:00000000 00000000 70 0 2236132 1 0000000000000000 100 0 0 10 0 [2021-01-11 08:15:29.401][352][][gs_ctl]: CheckPort: popen(command:lsof -i:5432 | grep -E 'COMMAND|LISTEN'). COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME GaussMast 1 omm 7u IPv4 2236132 0t0 TCP *:postgres (LISTEN) GaussMast 1 omm 8u IPv6 2236133 0t0 TCP *:postgres (LISTEN) [2021-01-11 08:15:29.500][352][][gs_ctl]: port conflict when start server [2021-01-11 08:15:29.500][352][][gs_ctl]: waiting for server to start... .0 LOG: The core dump path in core_pattern is an invalid directory. 0 [BACKEND] LOG: Begin to start openGauss Database. 2021-01-11 08:15:29.627 [unknown] [unknown] localhost 140439454434368 0 0 [BACKEND] LOG: Transparent encryption disabled. 2021-01-11 08:15:29.628 [unknown] [unknown] localhost 140439454434368 0 0 [BACKEND] WARNING: could not create any HA TCP/IP sockets 2021-01-11 08:15:29.631 [unknown] [unknown] localhost 140439454434368 0 0 [BACKEND] WARNING: No explicit IP is configured for listen_addresses GUC. 2021-01-11 08:15:29.631 [unknown] [unknown] localhost 140439454434368 0 0 [BACKEND] LOG: InitNuma numaNodeNum: 1 numa_distribute_mode: none inheritThreadPool: 0. 2021-01-11 08:15:29.631 [unknown] [unknown] localhost 140439454434368 0 0 [BACKEND] LOG: shared memory 321 Mbytes, memory context 11454 Mbytes, max process memory 12288 Mbytes 2021-01-11 08:15:29.631 [unknown] [unknown] localhost 140439454434368 0 0 [BACKEND] LOG: Initilize the memory protect with Process Chunks number 11454, change bits 20 2021-01-11 08:15:29.659 [unknown] [unknown] localhost 140439454434368 0 0 [CACHE] LOG: set data cache size(402653184) 2021-01-11 08:15:29.674 [unknown] [unknown] localhost 140439454434368 0 0 [CACHE] LOG: set metadata cache size(134217728) 2021-01-11 08:15:29.741 [unknown] [unknown] localhost 140439454434368 0 0 [BACKEND] LOG: gaussdb: fsync file "/home/omm/a1/gaussdb.state.temp" success 2021-01-11 08:15:29.741 [unknown] [unknown] localhost 140439454434368 0 0 [BACKEND] LOG: create gaussdb state file success: db state(STARTING_STATE), server mode(Normal) 2021-01-11 08:15:29.775 [unknown] [unknown] localhost 140439454434368 0 0 [BACKEND] LOG: max_safe_fds = 976, usable_fds = 1000, already_open = 14 2021-01-11 08:15:29.775 [unknown] [unknown] localhost 140439454434368 0 0 [BACKEND] LOG: The core dump path in core_pattern is an invalid directory. 2021-01-11 08:15:29.777 [unknown] [unknown] localhost 140439454434368 0 0 [BACKEND] LOG: Success to start openGauss Database. If you specify "&", please press any key to exit... [2021-01-11 08:15:30.517][352][][gs_ctl]: done [2021-01-11 08:15:30.517][352][][gs_ctl]: server started (/home/omm/a1)验证
[omm@0150b32d2461 ~]$ gsql -p6433 gsql ((openGauss 1.0.1 build e9da9fb9) compiled at 2020-10-01 13:58:32 commit 0 last mr ) Non-SSL connection (SSL connection is recommended when requiring high-security) Type "help" for help. omm=# select * from brm_test; t ---------------------------- 2021-01-11 03:33:40.737837 2021-01-11 03:38:46.32794 2021-01-11 03:39:42.466014 2021-01-11 03:40:02.816579 2021-01-11 07:29:21.98839 2021-01-11 07:57:36.799356 (6 rows)
lsn
[omm@7ec0d4302ea3 ~]$ gs_probackup validate --instance testdb01 -D /home/omm/a1/ --recovery-target-lsn=0/79000228
LOG: Validate begin.
INFO: Validating backup QMR39R
INFO: Backup QMR39R data files are valid
LOG: Thread [1]: Opening WAL segment "/var/lib/brm/backups/testdb01/QMR39R/database/pg_xlog/000000010000000000000076"
LOG: Extracting pagemap from tli 1 on range from 0/760001D0 to 0/0
LOG: Thread [1]: Opening WAL segment "/var/lib/brm/wal/testdb01/000000010000000000000076"
WARNING: Thread [1]: Could not read WAL record at 0/77000000: read xlog page failed at 0/77000028
ERROR: Thread [1]: WAL segment "/var/lib/brm/wal/testdb01/000000010000000000000076" is absent
WARNING: Recovery can be done up to time 2021-01-11 03:35:03+00, xid 9930 and LSN 0/760001D0
ERROR: Not enough WAL records to lsn 0/79000228
[omm@7ec0d4302ea3 ~]$ ls -l /var/lib/brm/wal/testdb01/000000010000000000000076
-rw------- 1 omm omm 16777216 Jan 11 03:35 /var/lib/brm/wal/testdb01/000000010000000000000076
[omm@0150b32d2461 ~]$ gs_probackup restore --instance testdb01 --recovery-target-lsn='0/880002A8' --restore-command='cp /var/lib/brm/wal/testdb01/%f %p' --no-validate -D /home/omm/a1/
LOG: Restore begin.
LOG: there is no file tablespace_map
LOG: check tablespace directories of backup QMRFD9
# recovery.conf generated by pg_probackup 2.4.2
LOG: check external directories of backup QMRFD9
WARNING: Backup QMRFD9 is used without validation.
ERROR: Backup QMRFD9 was created for version 9.2 which doesn't support recovery_target_lsn --->