案例說明：
本案例採用sys_backup.sh執行物理備份，備份使用如下邏輯架構：資料庫主機採用CentOS 7系統，repo採用kylin V10 Server。

• 單例項+外部備份伺服器

備份邏輯架構是，在單例項環境下，通過專用的備份伺服器執行sys_backup.sh的物理備份。

• 備份架構節點資訊：
  

• 資料庫版本資訊：

test=# select version();
                                                       version                                                    
------------------------------------------------------------------------------------------------------------------
 KingbaseES V008R006C005B0054 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 4.1.2 20080704 (Red Hat 4.1.2-46), 64-
bit
(1 row)
 

一、備份環境配置

1、首先建立repo和資料庫節點之間的ssh互信（kingbase和root使用者）

[kingbase@srv01 bin]$ uname -a
Linux srv01 4.19.90-17.ky10.x86_64 #1 SMP Sun Jun 28 15:41:49 CST 2020 x86_64 x86_64 x86_64 GNU/Linux

[kingbase@srv01 bin]$ ssh node1
Last login: Mon May 30 21:21:11 2022
[kingbase@node1 ~]$ 

[root@srv01 ~]# ssh node1
Last login: Mon May 30 21:42:32 2022 from 192.168.8.100
[root@node1 ~]# 
 

2、在repo節點建立備份相關的目錄及檔案（不需要安裝資料庫軟體）

=注意：目錄結構和資料庫節點儘量一致，並且保證sys_backup.sh能在repo節點正常執行。=
此版本資料庫節點的目錄：

[kingbase@srv01 ~]$  mkdir -p /opt/Kingbase/ES/V8R6_054/KESRealPro/V008R006C005B0054/Server/log

kingbase@node1 zip]$ pwd
/opt/Kingbase/ES/V8R6_054/ClientTools/guitools/DeployTools/zip
[kingbase@node1 zip]$ scp db.zip srv01:/opt/Kingbase/ES/V8R6_054/KESRealPro/V008R006C005B0054/Server/
 

將叢集db.zip拷貝到repo主機後，解壓：

[kingbase@srv01 Server]$ ls -lh
total 338M
drwxr-xr-x 2 kingbase kingbase 4.0K May 31 14:56 bin
-rw------- 1 kingbase kingbase 338M May 31 14:14 db.zip
drwxrwxr-x 5 kingbase kingbase 8.0K Apr  7 16:17 lib
drwx------ 2 kingbase kingbase 4.0K May 31 14:59 log
drwxrwxr-x 8 kingbase kingbase 4.0K Apr  7 16:17 share

二、初始化備份配置

1、檢視資料庫節點的archive_command配置

=注意：此archive_command配置，在kingbase.conf中如果未被註釋，在sys_backup.sh init時會自動配置。=

[kingbase@node1 data]$ cat kingbase.conf |grep archive_com
archive_command='export TZ=Asia/Shanghai;/opt/Kingbase/ES/V8R6_054/KESRealPro/V008R006C005B0054/Server/bin/sys_rman --config /home/kingbase/kbbr1_repo/sys_rman.conf --stanza=kingbase archive-push %p'

2、在repo節點配置sys_backup.conf檔案

[kingbase@srv01 bin]$ cat sys_backup.conf |grep -v ^$|grep -v ^#
_target_db_style="single"
_one_db_ip="192.168.8.200" 
_repo_ip="192.168.8.100"
_stanza_name="kingbase"  
_os_user_name="kingbase" 
_repo_path="/home/kingbase/kbbr1_repo"
_repo_retention_full_count=5 
_crond_full_days=7  
_crond_diff_days=0 
_crond_incr_days=1
_crond_full_hour=2 
_crond_diff_hour=3 
_crond_incr_hour=4 
_band_width=0
_os_ip_cmd="/sbin/ip"
_os_rm_cmd="/bin/rm"
_os_sed_cmd="/bin/sed"
_os_grep_cmd="/bin/grep"
_single_data_dir="/data/kingbase/v8r6_054/data"
_single_bin_dir="/opt/Kingbase/ES/V8R6_054/KESRealPro/V008R006C005B0054/Server/bin"
_single_db_user="system"
_single_db_port="54322"
_use_scmd=off

3、配置資料庫免密登入

[kingbase@node1 ~]$ cat .encpwd
*:*:*:system:MTIzNDU2
*:*:*:esrep:YmVpamluZw==

[kingbase@node1 bin]$ ./ksql -U system test -p 54322
ksql (V8.0)
Type "help" for help.

test=# 

4、執行sys_backup.sh初始化

[kingbase@srv01 bin]$ ./sys_backup.sh init
# generate single sys_rman.conf...DONE
# update single archive_command with sys_rman.archive-push...DONE
# create stanza and check...(maybe 60+ seconds)
# create stanza and check...DONE
# initial first full backup...(maybe several minutes)
# initial first full backup...DONE
# Initial sys_rman OK.
'sys_backup.sh start' should be executed when need back-rest feature.

5、檢視備份初始化後的配置
=注意：對於repo的儲存目錄，在repo和資料庫節點都會建立，只建立sys_rman.conf檔案，備份儲存在備份伺服器。=

[kingbase@srv01 bin]$ cat /home/kingbase/kbbr1_repo/sys_rman.conf 
# Genarate by script at 20220531145653, should not change manually
[kingbase]
kb1-path=/data/kingbase/v8r6_054/data
kb1-port=54322
kb1-user=system
kb1-host=192.168.8.200
kb1-host-user=kingbase

[global]
repo1-path=/home/kingbase/kbbr1_repo
repo1-retention-full=5
log-path=/opt/Kingbase/ES/V8R6_054/KESRealPro/V008R006C005B0054/Server/log
log-level-file=info
log-level-console=info
log-subprocess=y
process-max=4
#### default gz, support: gz none
compress-type=gz
compress-level=3
band-width=0

三、執行sys_backup.sh備份

1、建立備份計劃任務

[kingbase@srv01 bin]$ ./sys_backup.sh start
Enable some sys_rman in crontab-daemon
Authorized users only. All activities may be monitored and reported.
Set full-backup in 7 days
Authorized users only. All activities may be monitored and reported.
Authorized users only. All activities may be monitored and reported.
Authorized users only. All activities may be monitored and reported.
Set incr-backup in 1 days
Authorized users only. All activities may be monitored and reported.
Authorized users only. All activities may be monitored and reported.
0 2 */7 * * kingbase /opt/Kingbase/ES/V8R6_054/KESRealPro/V008R006C005B0054/Server/bin/sys_rman --config=/home/kingbase/kbbr1_repo/sys_rman.conf --stanza=kingbase --archive-copy --type=full backup >> /opt/Kingbase/ES/V8R6_054/KESRealPro/V008R006C005B0054/Server/log/sys_rman_backup_full.log 2>&1
0 4 */1 * * kingbase /opt/Kingbase/ES/V8R6_054/KESRealPro/V008R006C005B0054/Server/bin/sys_rman --config=/home/kingbase/kbbr1_repo/sys_rman.conf --stanza=kingbase --archive-copy --type=incr backup >> /opt/Kingbase/ES/V8R6_054/KESRealPro/V008R006C005B0054/Server/log/sys_rman_backup_incr.log 2>&1

2、手工執行sys_rman備份測試

[kingbase@srv01 ~]$ /opt/Kingbase/ES/V8R6_054/KESRealPro/V008R006C005B0054/Server/bin/sys_rman --config=/home/kingbase/kbbr1_repo/sys_rman.conf --stanza=kingbase --archive-copy --type=full backup
.......
2022-05-31 16:06:13.022 P00   INFO: backup stop archive = 000000010000000000000022, lsn = 0/22000128
2022-05-31 16:06:13.223 P00   INFO: check archive for segment(s) 000000010000000000000022:000000010000000000000022
2022-05-31 16:06:14.409 P00   INFO: new backup label = 20220531-004504F
2022-05-31 16:06:15.475 P00   INFO: full backup size = 460.9MB, file total = 2175
2022-05-31 16:06:15.476 P00   INFO: backup command end: completed successfully (136119ms)
2022-05-31 16:06:15.476 P00   INFO: expire command begin 2.27: --config=/home/kingbase/kbbr1_repo/sys_rman.conf --exec-id=100087-403370e7 --log-level-console=info --log-level-file=info --log-path=/opt/Kingbase/ES/V8R6_054/KESRealPro/V008R006C005B0054/Server/log --repo1-path=/home/kingbase/kbbr1_repo --repo1-retention-full=5 --stanza=kingbase
2022-05-31 16:06:15.864 P00   INFO: expire command end: completed successfully (388ms)

3、檢視備份資訊

[kingbase@srv01 ~]$ /opt/Kingbase/ES/V8R6_054/KESRealPro/V008R006C005B0054/Server/bin/sys_rman --config=/home/kingbase/kbbr1_repo/sys_rman.conf --stanza=kingbase  info
stanza: kingbase
    status: ok
    cipher: none

    db (current)
        wal archive min/max (V008R006C005B0054): 00000001000000000000001E/000000010000000000000022

        full backup: 20220530-233807F
            timestamp start/stop: 2022-05-30 23:38:07 / 2022-05-30 23:40:51
            wal start/stop: 000000010000000000000020 / 000000010000000000000020
            database size: 476.9MB, database backup size: 476.9MB
            repo1: backup set size: 13.4MB, backup size: 13.4MB

        full backup: 20220531-004504F
            timestamp start/stop: 2022-05-31 00:45:04 / 2022-05-31 00:47:16
            wal start/stop: 000000010000000000000022 / 000000010000000000000022
            database size: 476.9MB, database backup size: 476.9MB
            repo1: backup set size: 13.4MB, backup size: 13.4MB

四、總結
對於KingbaseES V8R6 單例項使用sys_backup.sh執行物理備份，可以使用專門的備份伺服器repo，備份的操作在repo上，但實際上還是通過呼叫sys_rman在叢集節點上完成物理備份。