查看状态
查看主机状态
[db2inst1@member1 ~]$ db2 "select varchar(hostname, 10) as host, varchar(state,8) as state,varchar(instance_stopped, 7) as stopped, alert from sysibmadm.db2_cluster_host_state"
HOST STATE STOPPED ALERT
---------- -------- ------- --------
cf2 ACTIVE NO NO
cf1 ACTIVE NO NO
member2 ACTIVE NO NO
member1 ACTIVE NO NO 或者
[db2inst1@member1 ~]$ db2cluster -cm -list -host -state
HOSTNAME STATE
------------------------ -----------
cf2 ONLINE
member2 ONLINE
member1 ONLINE
cf1 ONLINE或者
[db2inst1@member1 ~]$ db2cluster -cfs -list -host -state
HOSTNAME STATE
------------------------ -----------
cf1 STARTED
member1 STARTED
member2 STARTED
cf2 STARTED查看CF和MEMBER信息
实例（db2inst1）用户查看MEMBER信息
[db2inst1@member1 ~]$ db2instance -list
ID TYPE STATE HOME_HOST CURRENT_HOST ALERT PARTITION_NUMBER LOGICAL_PORT NETNAME
-- ---- ----- --------- ------------ ----- ---------------- ------------ -------
0 MEMBER STARTED member1 member1 NO 0 0 member1
1 MEMBER STARTED member2 member2 NO 0 0 member2
128 CF PRIMARY cf1 cf1 NO - 0 cf1
129 CF PEER cf2 cf2 NO - 0 cf2
HOSTNAME STATE INSTANCE_STOPPED ALERT
-------- ----- ---------------- -----
cf2 ACTIVE NO NO
cf1 ACTIVE NO NO
member2 ACTIVE NO NO
member1 ACTIVE NO NOroot用户查看MEMBER信息（查询结果同上）
[root@member1 ~]# db2instance -instance db2inst1 -list
ID TYPE STATE HOME_HOST CURRENT_HOST ALERT PARTITION_NUMBER LOGICAL_PORT NETNAME
-- ---- ----- --------- ------------ ----- ---------------- ------------ -------
0 MEMBER STARTED member1 member1 NO 0 0 member1
1 MEMBER STARTED member2 member2 NO 0 0 member2
128 CF PRIMARY cf1 cf1 NO - 0 cf1
129 CF PEER cf2 cf2 NO - 0 cf2
HOSTNAME STATE INSTANCE_STOPPED ALERT
-------- ----- ---------------- -----
cf2 ACTIVE NO NO
cf1 ACTIVE NO NO
member2 ACTIVE NO NO
member1 ACTIVE NO NOSQL方式查看CF信息
[db2inst1@member1 ~]$ db2 "SELECT ID,varchar(CURRENT_HOST,10) AS CUR_HOST,varchar(STATE,17) AS STATE,ALERT FROM SYSIBMADM.DB2_CF"
ID CUR_HOST STATE ALERT
------ ---------- ----------------- --------
128 cf1 PRIMARY NO
129 cf2 PEER NO 或者
[db2inst1@member1 ~]$ db2 "select id, varchar(state, 17) as state, varchar(home_host, 10) as home_host, varchar(current_host, 10) as cur_host, alert from TABLE(db2_get_instance_info(NULL,'','','CF',NULL)) "
ID STATE HOME_HOST CUR_HOST ALERT
------ ----------------- ---------- ---------- --------
128 PRIMARY cf1 cf1 NO
129 PEER cf2 cf2 NO SQL方式查看MEMBER信息
[db2inst1@member1 ~]$ db2 "select id,varchar(HOME_HOST,10) as home_host,varchar(current_host, 10) as cur_host,varchar(state, 21) as state,alert from sysibmadm.db2_member "
ID HOME_HOST CUR_HOST STATE ALERT
------ ---------- ---------- --------------------- --------
0 member1 member1 STARTED NO
1 member2 member2 STARTED NO 查看CF全局缓冲池
[db2inst1@member1 ~]$ db2 "select substr(host_name, 1, 7) as host, id as hostid, current_cf_gbp_size, configured_cf_gbp_size, target_cf_gbp_size from table(mon_get_cf(NULL))"
HOST HOSTID CURRENT_CF_GBP_SIZE CONFIGURED_CF_GBP_SIZE TARGET_CF_GBP_SIZE
------- ------ ------------------- ---------------------- ------------------
cf1 128 6651 342784 342784
cf2 129 6473 342784 342784查看CF全局缓冲池命中率
[db2inst1@member1 ~]$ db2 "select varchar(BP_NAME,20) as BP_NAME,MEMBER,POOL_DATA_GBP_L_READS+POOL_INDEX_GBP_L_READS AS LOGI_CAL_READS,
POOL_DATA_GBP_P_READS+POOL_INDEX_GBP_P_READS AS PHYSICAL_READS,
((FLOAT(POOL_DATA_GBP_L_READS+POOL_INDEX_GBP_L_READS) -FLOAT(POOL_DATA_GBP_P_READS+POOL_INDEX_GBP_P_READS))/FLOAT(POOL_DATA_GBP_L_READS+POOL_INDEX_GBP_L_READS))
* 100 AS HIT_RATIO FROM TABLE(MON_GET_BUFFERPOOL('',-2))"
BP_NAME MEMBER LOGI_CAL_READS PHYSICAL_READS HIT_RATIO
-------------------- ------ -------------------- -------------------- ------------------------
IBMDEFAULTBP 0 906 906 +0.00000000000000E+000查看CF锁内存使用情况
[db2inst1@member1 ~]$ db2 "select substr(HOST_NAME, 1, 7) as HOST,ID as HOSTID,CURRENT_CF_LOCK_SIZE,CONFIGURED_CF_LOCK_SIZE,TARGET_CF_LOCK_SIZE from table(mon_get_cf(NULL))"
HOST HOSTID CURRENT_CF_LOCK_SIZE CONFIGURED_CF_LOCK_SIZE TARGET_CF_LOCK_SIZE
------- ------ -------------------- ----------------------- -------------------
cf1 128 1312 65792 65792
cf2 129 361 65792 65792查看CF节点CPU使用情况
[db2inst1@member1 ~]$ db2 "select varchar(NAME,20) as HOST_ATTRIBUTE,varchar(VALUE, 25) as VALUES,varchar(UNIT,8) as UNIT from sysibmadm.env_cf_sys_resources"
HOST_ATTRIBUTE VALUES UNIT
-------------------- ------------------------- --------
HOST_NAME cf1 -
MEMORY_TOTAL 3817 MB
MEMORY_FREE 135 MB
MEMORY_SWAP_TOTAL 3951 MB
MEMORY_SWAP_FREE 3905 MB
VIRTUAL_MEM_TOTAL 7769 MB
VIRTUAL_MEM_FREE 4041 MB
CPU_USAGE_TOTAL 0 PERCENT
HOST_NAME cf2 -
MEMORY_TOTAL 3817 MB
MEMORY_FREE 1677 MB
MEMORY_SWAP_TOTAL 3951 MB
MEMORY_SWAP_FREE 3918 MB
VIRTUAL_MEM_TOTAL 7769 MB
VIRTUAL_MEM_FREE 5596 MB
CPU_USAGE_TOTAL 0 PERCENT重启CF
查看CF信息
[db2inst1@cf2 ~]$ db2instance -list
ID TYPE STATE HOME_HOST CURRENT_HOST ALERT PARTITION_NUMBER LOGICAL_PORT NETNAME
-- ---- ----- --------- ------------ ----- ---------------- ------------ -------
0 MEMBER STARTED member1 member1 NO 0 0 member1
1 MEMBER STARTED member2 member2 NO 0 0 member2
128 CF PRIMARY cf1 cf1 NO - 0 cf1
129 CF PEER cf2 cf2 NO - 0 cf2
HOSTNAME STATE INSTANCE_STOPPED ALERT
-------- ----- ---------------- -----
cf2 ACTIVE NO NO
cf1 ACTIVE NO NO
member2 ACTIVE NO NO
member1 ACTIVE NO NO关闭cf2,cf2的ID是129
[db2inst1]# db2stop CF 129
SQL1064N DB2STOP processing was successful.查看CF状态，可以看到cf2的状态为“STOPPED”
[db2inst1@cf2 ~]$ db2instance -list
ID TYPE STATE HOME_HOST CURRENT_HOST ALERT PARTITION_NUMBER LOGICAL_PORT NETNAME
-- ---- ----- --------- ------------ ----- ---------------- ------------ -------
0 MEMBER STARTED member1 member1 NO 0 0 member1
1 MEMBER STARTED member2 member2 NO 0 0 member2
128 CF PRIMARY cf1 cf1 NO - 0 cf1
129 CF STOPPED cf2 cf2 NO - 0 cf2
HOSTNAME STATE INSTANCE_STOPPED ALERT
-------- ----- ---------------- -----
cf2 ACTIVE NO NO
cf1 ACTIVE NO NO
member2 ACTIVE NO NO
member1 ACTIVE NO NO
启动cf2
[db2inst1]# db2start CF 129
SQL1063N DB2START processing was successful.查看CF状态，可以看到CF2的状态变化是"STOPPED"-->"CATCHUP"-->"PEER"
[db2inst1@cf2 ~]$ db2instance -list
ID TYPE STATE HOME_HOST CURRENT_HOST ALERT PARTITION_NUMBER LOGICAL_PORT NETNAME
-- ---- ----- --------- ------------ ----- ---------------- ------------ -------
0 MEMBER STARTED member1 member1 NO 0 0 member1
1 MEMBER STARTED member2 member2 NO 0 0 member2
128 CF PRIMARY cf1 cf1 NO - 0 cf1
129 CF CATCHUP cf2 cf2 NO - 0 cf2
HOSTNAME STATE INSTANCE_STOPPED ALERT
-------- ----- ---------------- -----
cf2 ACTIVE NO NO
cf1 ACTIVE NO NO
member2 ACTIVE NO NO
member1 ACTIVE NO NO
[db2inst1@cf2 ~]$ db2instance -list
ID TYPE STATE HOME_HOST CURRENT_HOST ALERT PARTITION_NUMBER LOGICAL_PORT NETNAME
-- ---- ----- --------- ------------ ----- ---------------- ------------ -------
0 MEMBER STARTED member1 member1 NO 0 0 member1
1 MEMBER STARTED member2 member2 NO 0 0 member2
128 CF PRIMARY cf1 cf1 NO - 0 cf1
129 CF PEER cf2 cf2 NO - 0 cf2
HOSTNAME STATE INSTANCE_STOPPED ALERT
-------- ----- ---------------- -----
cf2 ACTIVE NO NO
cf1 ACTIVE NO NO
member2 ACTIVE NO NO
member1 ACTIVE NO NO重启MEMBER
查看MEMBER信息
[db2inst1@cf1 ~]$ db2instance -list
ID TYPE STATE HOME_HOST CURRENT_HOST ALERT PARTITION_NUMBER LOGICAL_PORT NETNAME
-- ---- ----- --------- ------------ ----- ---------------- ------------ -------
0 MEMBER STARTED member1 member1 NO 0 0 member1
1 MEMBER STARTED member2 member2 NO 0 0 member2
128 CF PRIMARY cf1 cf1 NO - 0 cf1
129 CF PEER cf2 cf2 NO - 0 cf2
HOSTNAME STATE INSTANCE_STOPPED ALERT
-------- ----- ---------------- -----
cf2 ACTIVE NO NO
cf1 ACTIVE NO NO
member2 ACTIVE NO NO
member1 ACTIVE NO NO关闭member2，ID为1
[db2inst1]# db2stop member 1
09/19/2022 03:37:35 1 0 SQL1064N DB2STOP processing was successful.
SQL1064N DB2STOP processing was successful.查看MEMBER信息，可以看到member2的状态为"STOPPED"
[db2inst1@cf1 ~]$ db2instance -list
ID TYPE STATE HOME_HOST CURRENT_HOST ALERT PARTITION_NUMBER LOGICAL_PORT NETNAME
-- ---- ----- --------- ------------ ----- ---------------- ------------ -------
0 MEMBER STARTED member1 member1 NO 0 0 member1
1 MEMBER STOPPED member2 member2 NO 0 0 member2
128 CF PRIMARY cf1 cf1 NO - 0 cf1
129 CF PEER cf2 cf2 NO - 0 cf2
HOSTNAME STATE INSTANCE_STOPPED ALERT
-------- ----- ---------------- -----
cf2 ACTIVE NO NO
cf1 ACTIVE NO NO
member2 ACTIVE NO NO
member1 ACTIVE NO NO启动member2
[db2inst1]# db2start member 1
09/19/2022 03:39:47 1 0 SQL1063N DB2START processing was successful.
SQL1063N DB2START processing was successful.查看MEMBER信息，可以看到member2的状态为"STARTED"
[db2inst1@cf1 ~]$ db2instance -list
ID TYPE STATE HOME_HOST CURRENT_HOST ALERT PARTITION_NUMBER LOGICAL_PORT NETNAME
-- ---- ----- --------- ------------ ----- ---------------- ------------ -------
0 MEMBER STARTED member1 member1 NO 0 0 member1
1 MEMBER STARTED member2 member2 NO 0 0 member2
128 CF PRIMARY cf1 cf1 NO - 0 cf1
129 CF PEER cf2 cf2 NO - 0 cf2
HOSTNAME STATE INSTANCE_STOPPED ALERT
-------- ----- ---------------- -----
cf2 ACTIVE NO NO
cf1 ACTIVE NO NO
member2 ACTIVE NO NO
member1 ACTIVE NO NO维护CF/MEMBER
提示：
1. 此方式不适用于正常关闭操作系统维护，执行“shutdown”后会自动启动
2. 此方式适用于更新数据库补丁，更新操作系统补丁等。
关闭member2
[db2inst1]# db2stop member 1 quiesce
09/19/2022 04:04:04 1 0 SQL1064N DB2STOP processing was successful.
SQL1064N DB2STOP processing was successful.查看MEMBER状态，member2状态为"STOPPED"
[db2inst1@cf1 ~]$ db2instance -list
ID TYPE STATE HOME_HOST CURRENT_HOST ALERT PARTITION_NUMBER LOGICAL_PORT NETNAME
-- ---- ----- --------- ------------ ----- ---------------- ------------ -------
0 MEMBER STARTED member1 member1 NO 0 0 member1
1 MEMBER STOPPED member2 member2 NO 0 0 member2
128 CF PRIMARY cf1 cf1 NO - 0 cf1
129 CF PEER cf2 cf2 NO - 0 cf2
HOSTNAME STATE INSTANCE_STOPPED ALERT
-------- ----- ---------------- -----
cf2 ACTIVE NO NO
cf1 ACTIVE NO NO
member2 ACTIVE NO NO
member1 ACTIVE NO NO此时member2节点上的db2sysc进程还在
[db2inst1@member2 ~]$ ps -ef | grep db2sysc
db2inst1 54613 47343 0 04:06 pts/0 00:00:00 grep db2sysc
db2inst1 71845 71839 0 Sep18 ? 00:00:46 db2sysc (idle 999)
db2inst1 71846 71841 0 Sep18 ? 00:00:40 db2sysc (idle 997)
db2inst1 72229 72227 0 Sep18 ? 00:00:45 db2sysc (idle 998) 关闭member2节点上的实例
[db2inst1@cf1 ~]$ db2stop instance on member2
SQL1064N DB2STOP processing was successful.再次查看member2节点的db2sysc进程
[db2inst1@member2 ~]$ ps -ef | grep db2sysc
db2inst1 55052 47343 0 04:08 pts/0 00:00:00 grep db2sysc
省略维护工作...
启动member2主机上的实例
[db2inst1@member2 ~]$ db2start instance on member2
SQL1063N DB2START processing was successful.启动member2
[db2inst1@member2 ~]$ db2start member 1
09/19/2022 04:14:08 1 0 SQL1063N DB2START processing was successful.
SQL1063N DB2START processing was successful.查看MEMBER信息，此时member2状态为"STARTED"
[db2inst1@member2 ~]$ db2instance -list
ID TYPE STATE HOME_HOST CURRENT_HOST ALERT PARTITION_NUMBER LOGICAL_PORT NETNAME
-- ---- ----- --------- ------------ ----- ---------------- ------------ -------
0 MEMBER STARTED member1 member1 NO 0 0 member1
1 MEMBER STARTED member2 member2 NO 0 0 member2
128 CF PRIMARY cf1 cf1 NO - 0 cf1
129 CF PEER cf2 cf2 NO - 0 cf2
HOSTNAME STATE INSTANCE_STOPPED ALERT
-------- ----- ---------------- -----
cf2 ACTIVE NO NO
cf1 ACTIVE NO NO
member2 ACTIVE NO NO
member1 ACTIVE NO NO单节点维护模式
提示：
1. 适用于主机断电更换硬件等操作。
查看MEMBER状态
[db2inst1@member1 ~]$ db2instance -list
ID TYPE STATE HOME_HOST CURRENT_HOST ALERT PARTITION_NUMBER LOGICAL_PORT NETNAME
-- ---- ----- --------- ------------ ----- ---------------- ------------ -------
0 MEMBER STARTED member1 member1 NO 0 0 member1
1 MEMBER STARTED member2 member2 NO 0 0 member2
128 CF PRIMARY cf1 cf1 NO - 0 cf1
129 CF PEER cf2 cf2 NO - 0 cf2
HOSTNAME STATE INSTANCE_STOPPED ALERT
-------- ----- ---------------- -----
cf2 ACTIVE NO NO
cf1 ACTIVE NO NO
member2 ACTIVE NO NO
member1 ACTIVE NO NO关闭member2
[db2inst1@member1 ~]$ db2stop member 1
09/19/2022 04:31:45 1 0 SQL1064N DB2STOP processing was successful.
SQL1064N DB2STOP processing was successful.再次查看MEMBER状态
[db2inst1@member1 ~]$ db2instance -list
ID TYPE STATE HOME_HOST CURRENT_HOST ALERT PARTITION_NUMBER LOGICAL_PORT NETNAME
-- ---- ----- --------- ------------ ----- ---------------- ------------ -------
0 MEMBER STARTED member1 member1 NO 0 0 member1
1 MEMBER STOPPED member2 member2 NO 0 0 member2
128 CF PRIMARY cf1 cf1 NO - 0 cf1
129 CF PEER cf2 cf2 NO - 0 cf2
HOSTNAME STATE INSTANCE_STOPPED ALERT
-------- ----- ---------------- -----
cf2 ACTIVE NO NO
cf1 ACTIVE NO NO
member2 ACTIVE NO NO
member1 ACTIVE NO NO关闭member2节点的instance
[db2inst1@member1 ~]$ db2stop instance on member2
SQL1064N DB2STOP processing was successful.再次查看MEMBER状态
[db2inst1@member1 ~]$ db2instance -list
ID TYPE STATE HOME_HOST CURRENT_HOST ALERT PARTITION_NUMBER LOGICAL_PORT NETNAME
-- ---- ----- --------- ------------ ----- ---------------- ------------ -------
0 MEMBER STARTED member1 member1 NO 0 0 member1
1 MEMBER STOPPED member2 member2 NO 0 0 member2
128 CF PRIMARY cf1 cf1 NO - 0 cf1
129 CF PEER cf2 cf2 NO - 0 cf2
HOSTNAME STATE INSTANCE_STOPPED ALERT
-------- ----- ---------------- -----
cf2 ACTIVE NO NO
cf1 ACTIVE NO NO
member2 INACTIVE YES YES
member1 ACTIVE NO NO在member2节点上执行，将member2节点的集群管理器置于维护模式
[root@member2 ~]# db2cluster -cm -enter -maintenance
Host 'member2' has entered maintenance mode.在member2节点上执行，将member2节点上的集群文件系统置于维护模式
[root@member2 ~]# db2cluster -cfs -enter -maintenance
Host 'member2' has successfully entered file system maintenance mode此时member2可以正常停机
[root@member2 ~]# shutdown now
member2节点，将集群管理器退出维护模式
[root@member2 ~]# db2cluster -cm -exit -maintenance
Host 'member2' has exited maintenance mode. Domain 'db2domain_20220918082102' has been started.member2节点，将集群文件系统退出维护模式
[root@member2]# db2cluster -cfs -exit -maintenance
Host 'member2' has successfully exited file system maintenance mode.查看CF和MEMBER信息
[db2inst1@member2 ~]$ db2instance -list
ID TYPE STATE HOME_HOST CURRENT_HOST ALERT PARTITION_NUMBER LOGICAL_PORT NETNAME
-- ---- ----- --------- ------------ ----- ---------------- ------------ -------
0 MEMBER STARTED member1 member1 NO 0 0 member1
1 MEMBER STOPPED member2 member2 NO 0 0 member2
128 CF PRIMARY cf1 cf1 NO - 0 cf1
129 CF PEER cf2 cf2 NO - 0 cf2
HOSTNAME STATE INSTANCE_STOPPED ALERT
-------- ----- ---------------- -----
cf2 ACTIVE NO NO
cf1 ACTIVE NO NO
member2 ACTIVE YES NO
member1 ACTIVE NO NO启动member2节点上的实例
[db2inst1@member2 ~]$ db2start instance on member2
SQL1063N DB2START processing was successful.查看CF和MEMBER信息，member2节点上的instance已经启动，member2状态目前还为"STOPPED"
[db2inst1@member2 ~]$ db2instance -list
ID TYPE STATE HOME_HOST CURRENT_HOST ALERT PARTITION_NUMBER LOGICAL_PORT NETNAME
-- ---- ----- --------- ------------ ----- ---------------- ------------ -------
0 MEMBER STARTED member1 member1 NO 0 0 member1
1 MEMBER STOPPED member2 member2 NO 0 0 member2
128 CF PRIMARY cf1 cf1 NO - 0 cf1
129 CF PEER cf2 cf2 NO - 0 cf2
HOSTNAME STATE INSTANCE_STOPPED ALERT
-------- ----- ---------------- -----
cf2 ACTIVE NO NO
cf1 ACTIVE NO NO
member2 ACTIVE NO NO
member1 ACTIVE NO NO启动member2
[db2inst1@member2 ~]$ db2start member 1
09/19/2022 09:53:58 1 0 SQL1063N DB2START processing was successful.
SQL1063N DB2START processing was successful.查看CF和MEMBER信息，member2节点上的instance已经启动，member2状态为"STARTED"
[db2inst1@member2 ~]$ db2instance -list
ID TYPE STATE HOME_HOST CURRENT_HOST ALERT PARTITION_NUMBER LOGICAL_PORT NETNAME
-- ---- ----- --------- ------------ ----- ---------------- ------------ -------
0 MEMBER STARTED member1 member1 NO 0 0 member1
1 MEMBER STARTED member2 member2 NO 0 0 member2
128 CF PRIMARY cf1 cf1 NO - 0 cf1
129 CF PEER cf2 cf2 NO - 0 cf2
HOSTNAME STATE INSTANCE_STOPPED ALERT
-------- ----- ---------------- -----
cf2 ACTIVE NO NO
cf1 ACTIVE NO NO
member2 ACTIVE NO NO
member1 ACTIVE NO NO集群维护模式
查看CF和MEMBER状态
[db2inst1@cf1 ~]$ db2instance -list
ID TYPE STATE HOME_HOST CURRENT_HOST ALERT PARTITION_NUMBER LOGICAL_PORT NETNAME
-- ---- ----- --------- ------------ ----- ---------------- ------------ -------
0 MEMBER STARTED member1 member1 NO 0 0 member1
1 MEMBER STARTED member2 member2 NO 0 0 member2
128 CF PRIMARY cf1 cf1 NO - 0 cf1
129 CF PEER cf2 cf2 NO - 0 cf2
HOSTNAME STATE INSTANCE_STOPPED ALERT
-------- ----- ---------------- -----
cf2 ACTIVE NO NO
cf1 ACTIVE NO NO
member2 ACTIVE NO NO
member1 ACTIVE NO NO在任一节点上执行db2stop，停止所有主机上的数据库管理
[db2inst1@cf1 ~]$ db2stop
09/19/2022 10:00:48 0 0 SQL1064N DB2STOP processing was successful.
09/19/2022 10:00:52 1 0 SQL1064N DB2STOP processing was successful.
SQL1064N DB2STOP processing was successful.查看CF和MEMBER状态，CF和MEMBER状态均为"STOPPED"，但是各节点上的instance状态是"ACTIVE"
[db2inst1@cf1 ~]$ db2instance -list
ID TYPE STATE HOME_HOST CURRENT_HOST ALERT PARTITION_NUMBER LOGICAL_PORT NETNAME
-- ---- ----- --------- ------------ ----- ---------------- ------------ -------
0 MEMBER STOPPED member1 member1 NO 0 0 member1
1 MEMBER STOPPED member2 member2 NO 0 0 member2
128 CF STOPPED cf1 cf1 NO - 0 cf1
129 CF STOPPED cf2 cf2 NO - 0 cf2
HOSTNAME STATE INSTANCE_STOPPED ALERT
-------- ----- ---------------- -----
cf2 ACTIVE NO NO
cf1 ACTIVE NO NO
member2 ACTIVE NO NO
member1 ACTIVE NO NO分别关闭cf1,cf2,member1,member2 节点上的instance
[db2inst1@cf1 ~]$ db2stop instance on cf1
SQL1064N DB2STOP processing was successful.
[db2inst1@cf1 ~]$ db2stop instance on cf2
SQL1064N DB2STOP processing was successful.
[db2inst1@cf1 ~]$ db2stop instance on member1
SQL1064N DB2STOP processing was successful.
[db2inst1@cf1 ~]$ db2stop instance on member2
SQL1064N DB2STOP processing was successful.再次查看CF和MEMBER状态
[db2inst1@cf1 ~]$ db2instance -list
ID TYPE STATE HOME_HOST CURRENT_HOST ALERT PARTITION_NUMBER LOGICAL_PORT NETNAME
-- ---- ----- --------- ------------ ----- ---------------- ------------ -------
0 MEMBER STOPPED member1 member1 NO 0 0 member1
1 MEMBER STOPPED member2 member2 NO 0 0 member2
128 CF STOPPED cf1 cf1 NO - 0 cf1
129 CF STOPPED cf2 cf2 NO - 0 cf2
HOSTNAME STATE INSTANCE_STOPPED ALERT
-------- ----- ---------------- -----
cf2 ACTIVE YES NO
cf1 ACTIVE YES NO
member2 ACTIVE YES NO
member1 ACTIVE YES NO在任一节点执行如下操作，会将所有MEMBER置于维护模式
[root@member1 ~]# db2cluster -cm -enter -maintenance -all
Domain 'db2domain_20220918082102' has entered maintenance mode.在所有节点执行如下操作，将CF置于维护模式
[root@cf1 db2]# db2cluster -cfs -enter -maintenance -all
The shared file system has sucessfully entered maintenance mode.
[root@cf2 license]# db2cluster -cfs -enter -maintenance -all
The shared file system has sucessfully entered maintenance mode.
[root@member1 ~]# db2cluster -cfs -enter -maintenance -all
The shared file system has sucessfully entered maintenance mode.
[root@member2 ~]# db2cluster -cfs -enter -maintenance -all
The shared file system has sucessfully entered maintenance mode.
此时，所有节点可以正常关机。
任一节点执行将全部集群管理器退出维护模式
[root@cf1 ~]# db2cluster -cm -exit -maintenance -all
Domain 'db2domain_20220918082102' has successfully exited maintenance mode.查看集群主机状态
[root@cf1 ~]# db2cluster -cm -list -host -state
HOSTNAME STATE
------------------------ -----------
member1 ONLINE
member2 ONLINE
cf2 ONLINE
cf1 ONLINE每个节点执行，退出CF维护模式
[root@cf1 ~]# db2cluster -cfs -exit -maintenance -all
The shared file system successfully exited from maintenance mode.
[root@cf2 ~]# db2cluster -cfs -exit -maintenance -all
The shared file system successfully exited from maintenance mode.
[root@member1 ~]# db2cluster -cfs -exit -maintenance -all
The shared file system successfully exited from maintenance mode.
[root@member2 ~]# db2cluster -cfs -exit -maintenance -all
The shared file system successfully exited from maintenance mode.启动每个节点上的instance
[db2inst1@cf1 ~]$ db2start instance on cf1
SQL1063N DB2START processing was successful.
[db2inst1@cf1 ~]$ db2start instance on cf2
SQL1063N DB2START processing was successful.
[db2inst1@cf1 ~]$ db2start instance on member1
SQL1063N DB2START processing was successful.
[db2inst1@cf1 ~]$ db2start instance on member2
SQL1063N DB2START processing was successful.任一节点启动数据库管理器，会将集群所有的CF和MEMBER启动
[db2inst1@cf1 ~]$ db2start
09/19/2022 21:39:42 1 0 SQL1063N DB2START processing was successful.
09/19/2022 21:39:43 0 0 SQL1063N DB2START processing was successful.
SQL1063N DB2START processing was successful.查看CF、MEMBER、INSTANCE状态，所有状态均正常
[db2inst1@cf1 ~]$ db2instance -list
ID TYPE STATE HOME_HOST CURRENT_HOST ALERT PARTITION_NUMBER LOGICAL_PORT NETNAME
-- ---- ----- --------- ------------ ----- ---------------- ------------ -------
0 MEMBER STARTED member1 member1 NO 0 0 member1
1 MEMBER STARTED member2 member2 NO 0 0 member2
128 CF PRIMARY cf1 cf1 NO - 0 cf1
129 CF CATCHUP cf2 cf2 NO - 0 cf2
HOSTNAME STATE INSTANCE_STOPPED ALERT
-------- ----- ---------------- -----
cf2 ACTIVE NO NO
cf1 ACTIVE NO NO
member2 ACTIVE NO NO
member1 ACTIVE NO NO此时，DB2 pureScale集群可以正常使用了。
参考：https://www.ibm.com/docs/zh/db2/10.5?topic=administration-instance-management-in-db2-purescale-environment
