网站建设课程思政,国际新闻最新消息今天时政,小微企业库存管理软件,阳江58同城招聘网DB2 HADR 配置 centos 7配置 DB2 HADR 版本 11.1#xff0c;【亲测可用】全网最细的男人 操作系统 linux centos7 DB2版本 11.1 主库 192.168.46.70 备库 192.168.46.71 参考文章#xff1a;一步一个脚印 DB2 10.5 HADR 主备库配置 前置条件
机器之间时间必须同步#xff0…DB2 HADR 配置 centos 7配置 DB2 HADR 版本 11.1【亲测可用】全网最细的男人 操作系统 linux centos7 DB2版本 11.1 主库 192.168.46.70 备库 192.168.46.71 参考文章一步一个脚印 DB2 10.5 HADR 主备库配置 前置条件
机器之间时间必须同步生产环境配置时钟同步服务建议操作系统版本、DB2数据库版本等保持一致建议db2数据库用户标识等保持一致 关于如何安装db2,请参考我的上一篇文章 centos7安装db2 version11.1
主备均配置
安装完整依赖不然HADR会配置失败
yum install -y bc binutils* compat-libcap1* compat-libstdc* elfutils-libelf* elfutils-libelf-devel* fontconfig-devel* glibc* glibc-devel* ksh libaio* libaio-devel* libX11* libXau* libXi* libXtst* libXrender* libXrender-devel* libgcc* libstdc* libstdc-devel* libxcb* make net-tools nfs-utils smartmontools sysstat unixODBC gcc gcc-c python python-configshell python-rtslib python-six targetcli ntpyum install -y libstdc.i686yum install -y pam.i686配置/etc/hosts主备均配置
192.168.46.70 db2_node1 apple
192.168.46.71 db2_node2 pear配置 /etc/services 主备均配置
vim /etc/servicesdb2_hadr1 60001/tcp
db2_hadr2 60002/tcpdb2网络的配置
su - db2imn
db2set DB2COMMTCPIP
db2set -all主库配置
创建目录
mkdir -p /db2/db2imn/data/dogdb
mkdir -p /db2/db2imn/arch
mkdir /db2/db2imn/data/dogdb/tbs
chown db2inst1:db2iadm1 -R /db2准备测试表
##创建数据库
db2 create db dogdb on /db2/db2imn/data/dogdb using codeset utf8 territory CN
db2 connect to dogdb##创建缓冲区
db2 create bufferpool TB_BP_8k size 4000 pagesize 8k
db2 create bufferpool IDX_BP_8k size 4000 pagesize 8k创建表空间
db2 create regular tablespace TB_TS pagesize 8k managed by database using(file /db2/db2imn/data/dogdb/tbs/TB_TS 10g) bufferpool TB_BP_8k
db2 create regular tablespace IDX_TS pagesize 8k managed by database using(file /db2/db2imn/data/dogdb/tbs/IDX_TS 4g) bufferpool IDX_BP_8k 创建表
db2 connect to dogdbdb2 create table t1(id integer,name varchar(10),sex varchar(10)) IN TB_TS INDEX IN IDX_TS
db2 create table t2(id integer,name varchar(10),sex varchar(10)) IN TB_TS INDEX IN IDX_TSdb2 insert into t1 values(1,aaaa,bbbbb)
db2 insert into t2 values(1,aaaa,bbbbb)db2 select * from t1配置归档
db2 update db cfg for dogdb using logarchmeth1 disk:/db2/db2imn/arch备份数据库
mkdir -p /home/db2imn/db2_backup
chown db2inst1:db2iadm1 -R /home/db2imn/db2_backup
db2 force applications all
db2 backup database dogdb to /home/db2imn/db2_backup重启实例
db2stop
db2startNote配置归档参数需要重启生效。
手动归档
db2 archive log for db dogdb配置备库只读
db2set DB2_HADR_ROSON
db2set DB2_STANDBY_ISOURNote作为备库只读需要配置以上参数。
配置HADR同步参数
HADR_LOCAL_* 为当前机器参数 HADR_REMOT_* 为对方的参数主或者备 HADR_REMOTE_INST 为示例名
db2 update db cfg for dogdb using HADR_LOCAL_HOST db2_node1db2 update db cfg for dogdb using HADR_LOCAL_SVC db2_hadr1db2 update db cfg for dogdb using HADR_REMOTE_HOST db2_node2db2 update db cfg for dogdb using HADR_REMOTE_SVC db2_hadr2db2 update db cfg for dogdb using HADR_REMOTE_INST db2inst1db2 update db cfg for dogdb using HADR_SYNCMODE NEARSYNCdb2 update db cfg for dogdb using HADR_TIMEOUT 120db2 update db cfg for dogdb using LOGINDEXBUILD ON拷贝备份集
scp /home/db2imn/db2_backup/DOGDB.0.db2inst1.DBPART000.20231013052844.001 db2inst1pear:/home/db2imn/db2_backup备库设置
创建目录
mkdir -p /db2/db2imn/data/dogdb
mkdir -p /db2/db2imn/arch
mkdir /db2/db2imn/data/dogdb/tbs
chown db2inst1:db2iadm1 -R /db2恢复数据库
db2 restore database dogdb from /home/db2imn/db2_backup 配置备库只读
db2set DB2_HADR_ROSON
db2set DB2_STANDBY_ISOUR查看备库的状态
db2 get db cfg for dogdb | grep Rollforward
db2 rollforward db dogdb query status[db2inst1pear ~]$ db2 get db cfg for dogdb | grep Rollforward Rollforward pending DATABASE [db2inst1pear ~]$ db2 rollforward db dogdb query status Rollforward StatusInput database alias dogdb Number of members have returned status 1 Member ID 0 Rollforward status DB pending Next log file to be read S0000000.LOG Log files processed - Last committed transaction 2023-10-13-09.28.49.000000 UTC Note开启同步前备库的状态要为pending
配置HADR同步参数
db2 get db cfg for dogdb | grep -i HADRHADR database role STANDARD HADR local host name (HADR_LOCAL_HOST) HADR local service name (HADR_LOCAL_SVC) HADR remote host name (HADR_REMOTE_HOST) HADR remote service name (HADR_REMOTE_SVC) HADR instance name of remote server (HADR_REMOTE_INST) HADR timeout value (HADR_TIMEOUT) 120 HADR target list (HADR_TARGET_LIST) HADR log write synchronization mode (HADR_SYNCMODE) NEARSYNC HADR spool log data limit (4KB) (HADR_SPOOL_LIMIT) AUTOMATIC(0) HADR log replay delay (seconds) (HADR_REPLAY_DELAY) 0 HADR peer window duration (seconds) (HADR_PEER_WINDOW) 0 HADR SSL certificate label (HADR_SSL_LABEL) db2 update db cfg for dogdb using HADR_LOCAL_HOST db2_node2db2 update db cfg for dogdb using HADR_LOCAL_SVC db2_hadr2db2 update db cfg for dogdb using HADR_REMOTE_HOST db2_node1db2 update db cfg for dogdb using HADR_REMOTE_SVC db2_hadr1db2 update db cfg for dogdb using HADR_REMOTE_INST db2inst1db2 update db cfg for dogdb using HADR_SYNCMODE NEARSYNCdb2 update db cfg for dogdb using HADR_TIMEOUT 120db2 update db cfg for dogdb using LOGINDEXBUILD ONNote注意填写主备库的同步节点信息
HADR 启动
先启动备库
db2 start hadr on database dogdb as standby主库启动
db2 start hadr on database dogdb as primary查看HADR状态
db2pd -db dogdb -hadr HADR启停顺序
主
db2 stop hadr on db dogdb备
db2 deactivate db dogdb
db2 stop hadr on db dogdb备
db2 start hadr on db dogdb as standby主
db2 start hadr on db dogdb as primary主备切换
正常接管
db2 takeover hadr on database dogdb Note在备库运行将主库接管过来
故障切换
强制接管
db2 takeover hadr on database dogdb by forceNote故障切换其实就是强制接管主库接管后会把hadr进程杀掉
