达梦DataWatch主备环境搭建

1. 配置信息
   1. 信息表

主机名	ip（私网）	ip（外网）	实例名	服务端口	心跳端口	守护监听端口	守护进程端口
dm-dw1	192.168.1.25	192.168.2.25	DMWAT	5236	5238	5237	5239
dm-dw2	192.168.1.26	192.168.2.26	DMWAT2	5236	5238	5237	5239
dm-mon	192.168.1.27						5239

1. 1. hosts表

192.168.1.25 dm-dw1 192.168.1.26 dm-dw2 192.168.1.27 dm-mon 192.168.2.25 dm-dw1-pub 192.168.2.26 dm-dw2-pub

1. 1. 概念说明

服务端口：对外提供数据库服务的端口

心跳端口：用于数据同步的端口

守护监听端口：数据守护监听数据库的端口

守护进程端口：datawatch收集数据守护信息的端口

1. 基础准备
   1. 时间同步

#虚拟机无操作，仅修改了时区 timedatectl set-timezone Asia/Shanghai

1. 1. 同版本软件安装

所有数据库节点均需要安装数据库软件

单实例静默安装示范

#组 groupadd dinstall #用户 useradd -g dinstall dmdba #目录 mkdir -p /opt/dm8 chown dmdba:dinstall /opt/dm8 #介质挂载 mount dm8_20210818_x86_rh6_64_ent_8.4.2.18_pack14.iso /mnt cd /mnt #安装 [dmdba@dm-mon mnt]$ ./DMInstall.bin -i Please select the installer's language (E/e:English C/c:Chinese) [E/e]: Extract install files.......... core file size          (blocks, -c) 0 data seg size           (kbytes, -d) unlimited scheduling priority             (-e) 0 file size               (blocks, -f) unlimited pending signals                 (-i) 31096 max locked memory       (kbytes, -l) 64 max memory size         (kbytes, -m) unlimited open files                      (-n) 1024 pipe size            (512 bytes, -p) 8 POSIX message queues     (bytes, -q) 819200 real-time priority              (-r) 0 stack size              (kbytes, -s) 8192 cpu time               (seconds, -t) unlimited max user processes              (-u) 4096 virtual memory          (kbytes, -v) unlimited file locks                      (-x) unlimited The max number of open files is too little, suggest to set 65536 or more to number of open files. Welcome to DM DBMS Installer Whether to input the path of Key File? (Y/y:Yes N/n:No) [Y/y]:n Whether to Set The TimeZone? (Y/y:Yes N/n:No) [Y/y]:n Installation Type: 1 Typical 2 Server 3 Client 4 Custom Please Input the number of the Installation Type [1 Typical]: Require Space: 1178M Please Input the install path [/home/dmdba/dmdbms]:/opt/dm8 No write permission! Please Input the install path [/home/dmdba/dmdbms]:/opt/dm8 Available Space:47G Please Confirm the install path(/opt/dm8)? (Y/y:Yes N/n:No) [Y/y]:y Pre-Installation Summary Installation Location: /opt/dm8 Require Space: 1178M Available Space: 47G Version Information: Expire Date: Installation Type: Typical Confirm to Install? (Y/y:Yes N/n:No): Confirm to Install? (Y/y:Yes N/n:No):y 2022-08-26 16:24:15 [INFO] Installing DM DBMS... 2022-08-26 16:24:15 [INFO] Installing BASE Module... 2022-08-26 16:24:17 [INFO] Installing SERVER Module... 2022-08-26 16:24:18 [INFO] Installing CLIENT Module... 2022-08-26 16:24:19 [INFO] Installing DRIVERS Module... 2022-08-26 16:24:19 [INFO] Installing MANUAL Module... 2022-08-26 16:24:19 [INFO] Installing SERVICE Module... 2022-08-26 16:24:20 [INFO] Move log file to log directory. 2022-08-26 16:24:20 [INFO] Installed DM DBMS completely. Please execute the commands by root: /opt/dm8/script/root/root_installer.sh End [dmdba@dm-mon mnt]$ exit logout [root@dm-mon soft]# /opt/dm8/script/root/root_installer.sh Move /opt/dm8/bin/dm_svc.conf to /etc Modify the files' mode of DM Server Create the DmAPService service Created symlink from /etc/systemd/system/multi-user.target.wants/DmAPService.service to /usr/lib/systemd/system/DmAPService.service. Finished to create the service (DmAPService) Start the DmAPService service #环境变量 vi /home/dmdba/.bash_profile export PATH=$PATH:$DM_HOME/bin #增加上面环境变量

1. 搭建主备
   1. 主库阶段
      1. 主库初始化

#初始化数据库 dminit PATH=/opt/dm8/data DB_NAME=dmwat INSTANCE_NAME=dmwat PORT_NUM=5236  PAGE_SIZE=32 EXTENT_SIZE=32 CHARSET=1 CASE_SENSITIVE=0 LENGTH_IN_CHAR=0 BLANK_PAD_MODE=1 #初次启动 dmserver /opt/dm8/data/dmwat/dm.ini ……. ctrl+c 退出 #配置服务后，可以用DmService 管理 DmServicedmwat start

1. 1. 1. 主库开启配置归档

#登录，静默安装可以用以下方式登录 disql sysdba #切换到mount alter database mount; #添加归档路径 alter database add archivelog 'DEST=/opt/dm8/data/dmwat/arch,TYPE=local,FILE_SIZE=128,space_limit=0'; #开启归档 alter database archivelog; #开启数据库 alter database open; #查询归档状态 SQL> select arch_mode from v$database; LINEID     arch_mode ---------- --------- 1          Y

1. 1. 1. 主库备份

#关闭数据库 DmServicedmwat stop #备份数据库 RMAN> backup database '/opt/dm8/data/dmwat/dm.ini' full; backup database '/opt/dm8/data/dmwat/dm.ini' full; file dm.key not found, use default license! Database mode = 0, oguid = 0 Normal of FAST Normal of DEFAULT Normal of RECYCLE Normal of KEEP Normal of ROLL EP[0]'s cur_lsn[29710], file_lsn[29710] Processing backupset /opt/dm8/data/dmwat/bak/DB_dmwat_FULL_20220826_153412_280474                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     [Percent:100.00%][Speed:0.00M/s][Cost:00:00:00][Remaining:00:00:00] backup successfully! time used: 00:00:01.358 RMAN>

1. 1. 1. 配置服务（可选，disable掉）

#配置服务 /opt/dm8/script/root/dm_service_installer.sh -t dmserver -dm_ini /opt/dm8/data/dmwat/dm.ini -p dmwat [root@dm-dw1 yum.repos.d]# /opt/dm8/script/root/dm_service_installer.sh -t dmserver -dm_ini /opt/dm8/data/dmwat/dm.ini -p dmwat Created symlink from /etc/systemd/system/multi-user.target.wants/DmServicedmwat.service to /usr/lib/systemd/system/DmServicedmwat.service. Finished to create the service (DmServicedmwat) [root@dm-dw1 yum.repos.d]# systemctl enable DmServicedmwat.service [root@dm-dw1 yum.repos.d]# systemctl status DmServicedmwat.service ● DmServicedmwat.service - Dameng Database Service(DmServicedmwat).    Loaded: loaded (/usr/lib/systemd/system/DmServicedmwat.service; enabled; vendor preset: disabled)    Active: inactive (dead) [root@dm-dw1 yum.repos.d]# systemctl start DmServicedmwat.service [root@dm-dw1 yum.repos.d]# systemctl status DmServicedmwat.service ● DmServicedmwat.service - Dameng Database Service(DmServicedmwat).    Loaded: loaded (/usr/lib/systemd/system/DmServicedmwat.service; enabled; vendor preset: disabled)    Active: active (running) since Fri 2022-08-26 15:21:24 CST; 9s ago   Process: 2021 ExecStart=/opt/dm8/bin/DmServicedmwat start (code=exited, status=0/SUCCESS)  Main PID: 2045 (dmserver)    CGroup: /system.slice/DmServicedmwat.service            └─2045 /opt/dm8/bin/dmserver /opt/dm8/data/dmwat/dm.ini -noconsol... Aug 26 15:21:09 dm-dw1.novalocal systemd[1]: Starting Dameng Database Servi.... Aug 26 15:21:24 dm-dw1.novalocal DmServicedmwat[2021]: [36B blob data] Aug 26 15:21:24 dm-dw1.novalocal systemd[1]: Started Dameng Database Servic.... Hint: Some lines were ellipsized, use -l to show in full. [root@dm-dw1 yum.repos.d]# systemctl disable DmServicedmwat.service

1. 1. 备库阶段
      1. 初始化实例

dminit PATH=/opt/dm8/data DB_NAME=dmwat INSTANCE_NAME=dmwat2 PORT_NUM=5236  PAGE_SIZE=32 EXTENT_SIZE=32 CHARSET=1 CASE_SENSITIVE=0 LENGTH_IN_CHAR=0 BLANK_PAD_MODE=1

1. 1. 1. 恢复备库

#拷贝备份 [dmdba@dm-dw1 bak]$ scp -r DB_dmwat_FULL_20220826_153412_280474 dm-dw2:/home/dmdba dmdba@dm-dw2's password: DB_dmwat_FULL_20220826_153412_280474.bak     100%   16MB  63.2MB/s   00:00 DB_dmwat_FULL_20220826_153412_280474.meta    100%   77KB  16.4MB/s   00:00 #回复数据库 dmrman restore database '/opt/dm8/data/dmwat/dm.ini' from backupset '/home/dmdba/DB_dmwat_FULL_20220826_153412_280474'; recover database '/opt/dm8/data/dmwat/dm.ini' from backupset '/home/dmdba/DB_dmwat_FULL_20220826_153412_280474'; recover database '/opt/dm8/data/dmwat/dm.ini' update db_magic;

1. 1. 1. 配置服务（可选，disable掉）

#配置服务 /opt/dm8/script/root/dm_service_installer.sh -t dmserver -dm_ini /opt/dm8/data/dmwat/dm.ini -p dmwat #disable服务 [root@dm-dw1 yum.repos.d]# systemctl disable DmServicedmwat.service

1. 1. 配置阶段
      1. 配置参数文件dm.ini

主备均修改

vi /opt/dm8/data/dmwat/dm.ini

主库

INSTANCE_NAME            =DMWAT MAL_INI                  =1 ARCH_INI         =1 PORT_NUM       =5236 ALTER_MODE_STATUS    =0 ENABLE_OFFLINE_TS      =2

备库

INSTANCE_NAME            =DMWAT2 MAL_INI                  =1 ARCH_INI         =1 PORT_NUM       =5236 ALTER_MODE_STATUS    =0 ENABLE_OFFLINE_TS      =2

1. 1. 1. 配置参数文件dmmal.ini

主备均修改，主备一致

vi /opt/dm8/data/dmwat/dmmal.ini

主备一致

[MAL_INST1] MAL_INST_NAME = DMWAT         MAL_HOST = 192.168.1.25     MAL_PORT = 5238                 MAL_DW_PORT = 5239              MAL_INST_HOST = 192.168.2.25   MAL_INST_PORT = 5236            MAL_INST_DW_PORT = 5237      [MAL_INST2] MAL_INST_NAME = DMWAT2         MAL_HOST = 192.168.1.26     MAL_PORT = 5238                 MAL_DW_PORT = 5239              MAL_INST_HOST = 192.168.2.26   MAL_INST_PORT = 5236            MAL_INST_DW_PORT = 5237

1. 1. 1. 配置参数文件dmarch.ini

主备均修改

vi /opt/dm8/data/dmwat/dmarch.ini

主库

#DaMeng Database Archive Configuration file #this is comments [ARCHIVE_LOCAL1]         ARCH_TYPE            = LOCAL         ARCH_DEST            = /opt/dm8/data/dmwat/arch         ARCH_FILE_SIZE       = 128         ARCH_SPACE_LIMIT     = 0         ARCH_FLUSH_BUF_SIZE  = 0 [ARCHIVE_REALTIME]         ARCH_TYPE       = REALTIME         ARCH_DEST       = DMWAT2

备库

#DaMeng Database Archive Configuration file #this is comments [ARCHIVE_LOCAL1]         ARCH_TYPE            = LOCAL         ARCH_DEST            = /opt/dm8/data/dmwat/arch         ARCH_FILE_SIZE       = 128         ARCH_SPACE_LIMIT     = 0         ARCH_FLUSH_BUF_SIZE  = 0 [ARCHIVE_REALTIME]         ARCH_TYPE       = REALTIME         ARCH_DEST       = DMWAT

1. 1. 同步阶段
      1. 启动主备库到mount

启动数据库到mount

#主库 DmServicedmwat start mount #备库 DmServicedmwat start mount

1. 1. 1. 设置oguid与数据库角色

主库

[dmdba@dm-dw1 dmwat]$ disql sysdba Server[LOCALHOST:5236]:mode is normal, state is mount login used time : 3.867(ms) disql V8 SQL> sp_set_oguid(3721886); DMSQL executed successfully used time: 18.406(ms). Execute id is 0. SQL>alter database parimary;

备库

[dmdba@dm-dw2 ~]$ disql sysdba Server[LOCALHOST:5236]:mode is normal, state is mount login used time : 4.093(ms) disql V8 SQL> SQL> sp_set_oguid(3721886); DMSQL executed successfully used time: 19.548(ms). Execute id is 0. SQL> alter database standby; SQL>

1. 1. 1. 关闭主备库
2. 搭建datawatch
   1. 配置参数文件dmwatch.ini

主备修改dmwatch.ini，主备一致

vi /opt/dm8/data/dmwat/dmwatch.ini

主备一致

[GRP1] DW_TYPE = GLOBAL                            DW_MODE = MANUAL                            DW_ERROR_TIME = 10                          INST_RECOVER_TIME = 60                      INST_ERROR_TIME = 10                        INST_OGUID = 3721886                         INST_INI = /opt/dm8/data/dmwat/dm.ini      INST_AUTO_RESTART = 1                       INST_STARTUP_CMD = /opt/dm8/bin/dmserver    RLOG_SEND_THRESHOLD = 0                     RLOG_APPLY_THRESHOLD = 0

设置oguid，sp_set_oguid(3721886) 一致

1. 1. 配置datawatch服务

主备库均配置该服务，由该服务来启停数据库

#主备一致 /opt/dm8/script/root/dm_service_installer.sh -t dmwatcher -watcher_ini /opt/dm8/data/dmwat/dmwatcher.ini -p mon

1. 1. 配置datawatch监控台

在dm-mon上配置

配置监控台参数

[dmdba@dm-mon data]$ mkdir -p /opt/dm8/data/dmmon [dmdba@dm-mon data]$ cd /opt/dm8/data/dmmon [dmdba@dm-mon mon]$ vi dmmonitor.ini

参数配置

MON_DW_CONFIRM = 1                   MON_LOG_PATH = /opt/dm8/log          MON_LOG_INTERVAL = 60                MON_LOG_FILE_SIZE = 32              MON_LOG_SPACE_LIMIT = 0              [GRP1] MON_INST_OGUID = 3721886             MON_DW_IP = 192.168.1.25:5239 MON_DW_IP = 192.168.1.26:5239

与设置oguid，sp_set_oguid(3721886) 一致

使用dmmonitor监控

[dmdba@dm-mon data]$ dmmonitor /opt/dm8/data/dmmon/dmmonitor.ini [monitor]         2022-08-26 16:49:43: DMMONITOR[4.0] V8 [monitor]         2022-08-26 16:49:43: DMMONITOR[4.0] IS READY. Input command illegal, please input help to get the help information! Input command illegal, please input help to get the help information! [monitor]         2022-08-26 16:54:38: Received message from(DMWAT2) [monitor]         2022-08-26 16:54:46: Received message from(DMWAT)

1. 1. 使用datawatch服务启动主备

关闭主备库

#先关闭数据库 DmServicedmwat stop

启动watcher服务

#启动datawatch服务 systemctl start DmWatcherServicemon

1. 验证同步
   1. datawatch验证

监控台命令，dm-mon上

[dmdba@dm-mon data]$ dmmonitor /opt/dm8/data/dmmon/dmmonitor.ini [monitor]         2022-08-26 16:49:43: DMMONITOR[4.0] V8 [monitor]         2022-08-26 16:49:43: DMMONITOR[4.0] IS READY. Input command illegal, please input help to get the help information! Input command illegal, please input help to get the help information! [monitor]         2022-08-26 16:54:38: Received message from(DMWAT2) [monitor]         2022-08-26 16:54:46: Received message from(DMWAT) show global info 2022-08-26 16:57:19 #================================================================================# GROUP            OGUID       MON_CONFIRM     MODE            MPP_FLAG GRP1             3721886     TRUE            MANUAL          FALSE <> DW_IP               MAL_DW_PORT  WTIME                WTYPE     WCTLSTAT  WSTATUS        INAME            INST_OK   N_EP  N_OK  ISTATUS     IMODE     DSC_STATUS     RTYPE     RSTAT 192.168.1.25        5239         2022-08-26 16:57:18  GLOBAL    VALID     OPEN           DMWAT            OK        1     1     OPEN        PRIMARY   DSC_OPEN       REALTIME  VALID DW_IP               MAL_DW_PORT  WTIME                WTYPE     WCTLSTAT  WSTATUS        INAME            INST_OK   N_EP  N_OK  ISTATUS     IMODE     DSC_STATUS     RTYPE     RSTAT 192.168.1.26        5239         2022-08-26 16:57:18  GLOBAL    VALID     OPEN           DMWAT2           OK        1     1     OPEN        STANDBY   DSC_OPEN       REALTIME  VALID #================================================================================# ####该界面可随时退出，只是个监控界面输出

1. 1. sql验证

建表验证

##主库 SQL> create table wzy(x int); executed successfully used time: 20.814(ms). Execute id is 304. SQL> insert into wzy values(123); affect rows 1 used time: 1.402(ms). Execute id is 305. SQL> commit; executed successfully used time: 3.339(ms). Execute id is 306. SQL> select mode$ from v$instance; LINEID     mode$ ---------- ------- 1          PRIMARY ##备库 SQL> select * from wzy; LINEID     x ---------- ----------- 1          123 used time: 3.325(ms). Execute id is 1. SQL> insert into wzy values(321); insert into wzy values(321); [-2018]:Error in line: 1 Try to insert/update/delete table table is not temporary or contains lob on standby mode. used time: 0.624(ms). Execute id is 0. SQL> select mode$ from v$instance; LINEID     mode$ ---------- ------- 1          STANDBY ------