關於RAC CRS 自動啓動

關於CRS自動重啓實驗


一.檢查ASM
[root@rac1 ~]# /etc/init.d/oracleasm status
Checking if ASM is loaded: yes
Checking if /dev/oracleasm is mounted: yes
[root@rac1 ~]# /etc/init.d/oracleasm listdisks
ASM01
ASM02
ASM03


二.RAC自動啓動的時候後臺CRS進程
[root@rac1 ~]# ls -l /etc/init.d/init.*
-r-xr-xr-x 1 root root  1951 Aug 20 11:57 /etc/init.d/init.crs
-r-xr-xr-x 1 root root  4722 Aug 20 11:57 /etc/init.d/init.crsd
-r-xr-xr-x 1 root root 35402 Aug 20 11:57 /etc/init.d/init.cssd
-r-xr-xr-x 1 root root  3198 Aug 20 11:57 /etc/init.d/init.evmd




三.我查看一下CRS狀態
節點1
[oracle@rac1 ~]# crs_stat -t
Name           Type           Target    State     Host        
------------------------------------------------------------
ora....B1.inst application    ONLINE    ONLINE    rac1        
ora....B2.inst application    ONLINE    ONLINE    rac2        
ora.RACDB.db   application    ONLINE    ONLINE    rac1        
ora....SM1.asm application    ONLINE    ONLINE    rac1        
ora....C1.lsnr application    ONLINE    ONLINE    rac1        
ora.rac1.gsd   application    ONLINE    ONLINE    rac1        
ora.rac1.ons   application    ONLINE    ONLINE    rac1        
ora.rac1.vip   application    ONLINE    ONLINE    rac1        
ora....SM2.asm application    ONLINE    ONLINE    rac2        
ora....C2.lsnr application    ONLINE    ONLINE    rac2        
ora.rac2.gsd   application    ONLINE    ONLINE    rac2        
ora.rac2.ons   application    ONLINE    ONLINE    rac2        
ora.rac2.vip   application    ONLINE    ONLINE    rac2  

節點2
[oracle@rac2 ~]# crs_stat -t
Name           Type           Target    State     Host        
------------------------------------------------------------
ora....B1.inst application    ONLINE    ONLINE    rac1        
ora....B2.inst application    ONLINE    ONLINE    rac2        
ora.RACDB.db   application    ONLINE    ONLINE    rac1        
ora....SM1.asm application    ONLINE    ONLINE    rac1        
ora....C1.lsnr application    ONLINE    ONLINE    rac1        
ora.rac1.gsd   application    ONLINE    ONLINE    rac1        
ora.rac1.ons   application    ONLINE    ONLINE    rac1        
ora.rac1.vip   application    ONLINE    ONLINE    rac1        
ora....SM2.asm application    ONLINE    ONLINE    rac2        
ora....C2.lsnr application    ONLINE    ONLINE    rac2        
ora.rac2.gsd   application    ONLINE    ONLINE    rac2        
ora.rac2.ons   application    ONLINE    ONLINE    rac2        
ora.rac2.vip   application    ONLINE    ONLINE    rac2   


方法：也可以用crs_stat 查看全部進程信息
[root@rac1 bin]# ./crs_stat
NAME=ora.RACDB.RACDB1.inst
TYPE=application
TARGET=ONLINE
STATE=ONLINE on rac1


NAME=ora.RACDB.RACDB2.inst
TYPE=application
TARGET=ONLINE
STATE=ONLINE on rac2


NAME=ora.RACDB.db
TYPE=application
TARGET=ONLINE
STATE=ONLINE on rac1


NAME=ora.rac1.ASM1.asm
TYPE=application
TARGET=ONLINE
STATE=ONLINE on rac1




NAME=ora.rac2.gsd
TYPE=application
TARGET=ONLINE
STATE=OFFLINE on rac2


NAME=ora.rac2.ons
TYPE=application
TARGET=ONLINE
STATE=UNKNOWN on rac2
。。。


1.對於OFFLINE的進程可以手動啓動
[root@rac1 bin]# ./crs_start ora.rac2.gsd
Attempting to start `ora.rac2.gsd` on member `rac2`
Start of `ora.rac2.gsd` on member `rac2` succeeded.
2.對於UNKNOWN的進程  可以先./crs_stop .... 後再 ./crs_start 

3.如果crs_stop不能結束，crs_start不能啓動的進程，解決方式：
3.1 使用crs_stop -f 參數把crs中狀態是UNKNOWN的服務關掉，然後再用crs_start -f(加一個-f的參數)啓動所有的服務就可以。分別在兩個節點上執行。
3.2 轉換到root用戶下用/etc/init.d/init.crs stop先禁用crs，然後在用/etc/init.d/init.crs start去啓用crs,啓用crs後會自啓動crs的一系列服務，注意：此種方法最好在兩節點都執行。 （但我自己做實驗只在節點1上也可以）
[root@rac1 ~]# /etc/init.d/init.crs stop
Shutting down Oracle Cluster Ready Services (CRS):
Stopping resources.
Successfully stopped CRS resources 
Stopping CSSD.
Shutting down CSS daemon.
Shutdown request successfully issued.
Shutdown has begun. The daemons should exit soon.
[root@rac1 bin]# ./crs_stat -t
CRS-0184: Cannot communicate with the CRS daemon.
[root@rac1 bin]# ./crs_stat -t
Name           Type           Target    State     Host        
------------------------------------------------------------
ora....B1.inst application    ONLINE    ONLINE    rac1        
ora....B2.inst application    ONLINE    ONLINE    rac2        
ora.RACDB.db   application    ONLINE    ONLINE    rac2        
ora....SM1.asm application    ONLINE    ONLINE    rac1        
ora....C1.lsnr application    ONLINE    ONLINE    rac1        
ora.rac1.gsd   application    ONLINE    ONLINE    rac1        
ora.rac1.ons   application    ONLINE    ONLINE    rac1        
ora.rac1.vip   application    ONLINE    ONLINE    rac1        
ora....SM2.asm application    ONLINE    ONLINE    rac2        
ora....C2.lsnr application    ONLINE    ONLINE    rac2        
ora.rac2.gsd   application    ONLINE    ONLINE    rac2        
ora.rac2.ons   application    ONLINE    ONLINE    rac2        
ora.rac2.vip   application    ONLINE    ONLINE    rac2    


2.查看當前關於crs的進程
[root@rac1 ~]$ ps -ef |grep crs
root     23206     1  0 03:05 ?        00:00:00 /u01/app/oracle/product/10.2.0/db_1/bin/crsd.bin restart
oracle   30815 29217  0 03:10 pts/4    00:00:00 grep crs


3.kill 掉crs進程
[root@rac1 ~]# kill -9 23206
[root@rac1 ~]# crs_stat -t
CRS-0184: Cannot communicate with the CRS daemon.


4.此時crs進程秒級的進入boot狀態，還有服務init.crsd 運行
[root@rac1 ~]# ps -ef|grep crs
root       430     1  0 03:12 ?        00:00:00 /bin/sh /etc/init.d/init.crsd run
root       507   474  0 03:12 ?        00:00:00 /bin/su -l oracle -c /u01/app/oracle/product/10.2.0/db_1/bin/crsctl check boot > /tmp/crsctl.474
oracle     508   507  0 03:12 ?        00:00:00 -bash -c /u01/app/oracle/product/10.2.0/db_1/bin/crsctl check boot > /tmp/crsctl.474
oracle     539   508  0 03:12 ?        00:00:00 /u01/app/oracle/product/10.2.0/db_1/bin/crsctl.bin check boot
root       570  2971  0 03:12 pts/4    00:00:00 grep crs


節點2 
[oracle@rac2 ~]$ ps -ef|grep crs
root      4348     1  0 13:56 ?        00:00:01 /u01/app/oracle/product/10.2.0/db_1/bin/crsd.bin reboot
oracle   25981 16487  0 15:16 pts/3    00:00:00 grep crs
[oracle@rac2 ~]$ crs_stat -t
Name           Type           Target    State     Host        
------------------------------------------------------------
ora....B1.inst application    ONLINE    ONLINE    rac1        
ora....B2.inst application    ONLINE    ONLINE    rac2        
ora.RACDB.db   application    ONLINE    ONLINE    rac1        
ora....SM1.asm application    ONLINE    ONLINE    rac1        
ora....C1.lsnr application    ONLINE    ONLINE    rac1        
ora.rac1.gsd   application    ONLINE    ONLINE    rac1        
ora.rac1.ons   application    ONLINE    ONLINE    rac1        
ora.rac1.vip   application    ONLINE    ONLINE    rac1        
ora....SM2.asm application    ONLINE    ONLINE    rac2        
ora....C2.lsnr application    ONLINE    ONLINE    rac2        
ora.rac2.gsd   application    ONLINE    ONLINE    rac2        
ora.rac2.ons   application    ONLINE    ONLINE    rac2        
ora.rac2.vip   application    ONLINE    ONLINE    rac2      


5.再次查看進程 只有init.crsd進程運行
[root@rac1 ~]# ps -ef|grep crs
root       430     1  0 03:12 ?        00:00:00 /bin/sh /etc/init.d/init.crsd run
root       730  2971  0 03:12 pts/4    00:00:00 grep crs
[root@rac1 ~]# ps -ef|grep crs
root       430     1  0 03:12 ?        00:00:00 /bin/sh /etc/init.d/init.crsd run
root       833  2971  0 03:12 pts/4    00:00:00 grep crs


6.一分鐘左右查看
[root@rac1 ~]# ps -ef|grep crs
root       430     1  0 03:12 ?        00:00:00 /u01/app/oracle/product/10.2.0/db_1/bin/crsd.bin restart
root      4813  2971  0 03:14 pts/4    00:00:00 grep crs


此時的crs 服務已經是啓動了
[root@rac1 ~]# crs_stat -t
Name           Type           Target    State     Host        
------------------------------------------------------------
ora....B1.inst application    ONLINE    ONLINE    rac1        
ora....B2.inst application    ONLINE    ONLINE    rac2        
ora.RACDB.db   application    ONLINE    ONLINE    rac1        
ora....SM1.asm application    ONLINE    ONLINE    rac1        
ora....C1.lsnr application    ONLINE    ONLINE    rac1        
ora.rac1.gsd   application    ONLINE    ONLINE    rac1        
ora.rac1.ons   application    ONLINE    ONLINE    rac1        
ora.rac1.vip   application    ONLINE    ONLINE    rac1        
ora....SM2.asm application    ONLINE    ONLINE    rac2        
ora....C2.lsnr application    ONLINE    ONLINE    rac2        
ora.rac2.gsd   application    ONLINE    ONLINE    rac2        
ora.rac2.ons   application    ONLINE    ONLINE    rac2        
ora.rac2.vip   application    ONLINE    ONLINE    rac2