目标：

熟悉主要进程的启停顺序了解独占模式 -excl crsctl start crs与crsctl start cluster 区别

1.熟悉主要进程的启停顺序

1.1 启动节点rac1：

1 [root@rac1 bin]# ./crsctl start crs -excl
		
2 CRS-4123: Oracle High Availability Services has been started.  --启动OHASD进程
		
3 CRS-2672: Attempting to start 'ora.gipcd' on 'rac1'
		
4 CRS-2672: Attempting to start 'ora.mdnsd' on 'rac1'
		
5 CRS-2676: Start of 'ora.gipcd' on 'rac1' succeeded             --启动ora.gipcd
		
6 CRS-2676: Start of 'ora.mdnsd' on 'rac1' succeeded             --启动ora.mdnsd
		
7 CRS-2672: Attempting to start 'ora.gpnpd' on 'rac1'
		
8 CRS-2676: Start of 'ora.gpnpd' on 'rac1' succeeded             --启动ora.gpnpd
		
9 CRS-2672: Attempting to start 'ora.cssdmonitor' on 'rac1'
		
10 CRS-2676: Start of 'ora.cssdmonitor' on 'rac1' succeeded       --启动ora.cssdmonitor
		
11 CRS-2672: Attempting to start 'ora.cssd' on 'rac1'
		
12 CRS-2679: Attempting to clean 'ora.diskmon' on 'rac1'
		
13 CRS-2681: Clean of 'ora.diskmon' on 'rac1' succeeded           --清除ora.diskmon
		
14 CRS-2672: Attempting to start 'ora.diskmon' on 'rac1'
		
15 CRS-2676: Start of 'ora.diskmon' on 'rac1' succeeded           --启动ora.diskmon
		
16 CRS-2676: Start of 'ora.cssd' on 'rac1' succeeded              --启动ora.cssd
		
17 CRS-2672: Attempting to start 'ora.ctssd' on 'rac1'
		
18 CRS-2672: Attempting to start 'ora.drivers.acfs' on 'rac1'
		
19 CRS-2676: Start of 'ora.ctssd' on 'rac1' succeeded             --启动ora.ctssd
		
20 CRS-2676: Start of 'ora.drivers.acfs' on 'rac1' succeeded      --启动ora.drivers.acfs
		
21 CRS-2672: Attempting to start 'ora.asm' on 'rac1'            
		
22 CRS-2676: Start of 'ora.asm' on 'rac1' succeeded               --启动ora.asm
		
23 CRS-2672: Attempting to start 'ora.crsd' on 'rac1'            
		
24 CRS-2676: Start of 'ora.crsd' on 'rac1' succeeded              --启动ora.crsd
		
25
		
26 观察节点rac2：                                                 --节点未启动，说明 crsctl start crs -excl 只启动单节点进程
		
27 [root@rac2 bin]# ps -ef|grep grid         
		
28 root      5823  4165  0 23:26 pts/1    00:00:00 grep grid
		
29 [root@rac2 bin]#

1.2 关闭节点rac1

1 [root@rac1 bin]# ./crsctl stop crs -f
		
2 CRS-2791: Starting shutdown of Oracle High Availability Services-managed resources on'rac1'
		
3 CRS-2673: Attempting to stop 'ora.crsd' on'rac1'                                           
		
4 CRS-2677: Stop of 'ora.crsd' on 'rac1' succeeded                               --关闭ora.crsd
		
5 CRS-2673: Attempting to stop 'ora.cssdmonitor' on'rac1'                                     
		
6 CRS-2673: Attempting to stop 'ora.ctssd' on 'rac1'
		
7 CRS-2673: Attempting to stop 'ora.asm' on 'rac1'
		
8 CRS-2673: Attempting to stop 'ora.drivers.acfs' on 'rac1'
		
9 CRS-2673: Attempting to stop 'ora.mdnsd' on 'rac1'
		
10 CRS-2677: Stop of 'ora.cssdmonitor' on 'rac1' succeeded                        --关闭ora.cssdmonitor        
		
11 CRS-2677: Stop of 'ora.mdnsd' on 'rac1' succeeded                              --关闭ora.mdnsd
		
12 CRS-2677: Stop of 'ora.ctssd' on 'rac1' succeeded                              --关闭ora.ctssd
		
13 CRS-2677: Stop of 'ora.drivers.acfs' on 'rac1' succeeded                       --关闭ora.drivers.acfs
		
14 CRS-2677: Stop of 'ora.asm' on 'rac1' succeeded                                --关闭ora.asm  
		
15 CRS-2673: Attempting to stop 'ora.cssd' on 'rac1'
		
16 CRS-2677: Stop of 'ora.cssd' on 'rac1' succeeded                               --关闭ora.cssd
		
17 CRS-2673: Attempting to stop 'ora.gpnpd' on 'rac1'
		
18 CRS-2673: Attempting to stop 'ora.diskmon' on 'rac1'
		
19 CRS-2677: Stop of 'ora.gpnpd' on 'rac1' succeeded                              --关闭ora.gpnpd
		
20 CRS-2673: Attempting to stop 'ora.gipcd' on 'rac1'
		
21 CRS-2677: Stop of 'ora.diskmon' on 'rac1' succeeded                            --关闭ora.diskmon
		
22 CRS-2677: Stop of 'ora.gipcd' on 'rac1' succeeded                              --关闭ora.gipcd
		
23 CRS-2793: Shutdown of Oracle High Availability Services-managed resources on 'rac1' has completed --关闭OHASD进程
		
24 CRS-4133: Oracle High Availability Services has been stopped.
		
25 [root@rac1 bin]#

　　总结：重要进程的启动顺序为：OHASD -> ora.gpnpd -> ora.cssd -> ora.asm -> ora.crsd

2. 了解独占模式 -excl

　　既然是以独占模式启动，那么有些资源一定是不能被其他节点共享的。出现抢占资源会出现什么情况

2.1 启动节点rac1：

1 [root@rac1 bin]# ./crsctl start crs -excl                   -- -excl表示以独占模式启动
		
2 CRS-4123: Oracle High Availability Services has been started.
		
3 CRS-2672: Attempting to start 'ora.gipcd' on 'rac1'
		
4 CRS-2672: Attempting to start 'ora.mdnsd' on 'rac1'
		
5 CRS-2676: Start of 'ora.gipcd' on 'rac1' succeeded
		
6 CRS-2676: Start of 'ora.mdnsd' on 'rac1' succeeded
		
7 CRS-2672: Attempting to start 'ora.gpnpd' on 'rac1'
		
8 CRS-2676: Start of 'ora.gpnpd' on 'rac1' succeeded
		
9 CRS-2672: Attempting to start 'ora.cssdmonitor' on 'rac1'
		
10 CRS-2676: Start of 'ora.cssdmonitor' on 'rac1' succeeded
		
11 CRS-2672: Attempting to start 'ora.cssd' on 'rac1'
		
12 CRS-2679: Attempting to clean 'ora.diskmon' on 'rac1'
		
13 CRS-2681: Clean of 'ora.diskmon' on 'rac1' succeeded
		
14 CRS-2672: Attempting to start 'ora.diskmon' on 'rac1'
		
15 CRS-2676: Start of 'ora.diskmon' on 'rac1' succeeded
		
16 CRS-2676: Start of 'ora.cssd' on 'rac1' succeeded
		
17 CRS-2672: Attempting to start 'ora.ctssd' on 'rac1'
		
18 CRS-2672: Attempting to start 'ora.drivers.acfs' on 'rac1'
		
19 CRS-2676: Start of 'ora.ctssd' on 'rac1' succeeded
		
20 CRS-2676: Start of 'ora.drivers.acfs' on 'rac1' succeeded
		
21 CRS-2672: Attempting to start 'ora.asm' on 'rac1'
		
22 CRS-2676: Start of 'ora.asm' on 'rac1' succeeded
		
23 CRS-2672: Attempting to start 'ora.crsd' on 'rac1'
		
24 CRS-2676: Start of 'ora.crsd' on 'rac1' succeeded
		
25 [root@rac1 bin]#

2.2 RAC1在独占模式下时，看看节点RAC2抢占资源时会发生什么：

1 [root@rac2 bin]# ./crsctl start crs -excl
		
2 CRS-4123: Oracle High Availability Services has been started.
		
3 CRS-2672: Attempting to start 'ora.gipcd' on 'rac2'
		
4 CRS-2672: Attempting to start 'ora.mdnsd' on 'rac2'
		
5 CRS-2676: Start of 'ora.gipcd' on 'rac2' succeeded
		
6 CRS-2676: Start of 'ora.mdnsd' on 'rac2' succeeded
		
7 CRS-2672: Attempting to start 'ora.gpnpd' on 'rac2'
		
8 CRS-2676: Start of 'ora.gpnpd' on 'rac2' succeeded
		
9 CRS-2672: Attempting to start 'ora.cssdmonitor' on 'rac2'
		
10 CRS-2676: Start of 'ora.cssdmonitor' on 'rac2' succeeded
		
11 CRS-2672: Attempting to start 'ora.cssd' on 'rac2'
		
12 CRS-2679: Attempting to clean 'ora.diskmon' on 'rac2'
		
13 CRS-2681: Clean of 'ora.diskmon' on 'rac2' succeeded
		
14 CRS-2672: Attempting to start 'ora.diskmon' on 'rac2'
		
15 CRS-2676: Start of 'ora.diskmon' on 'rac2' succeeded
		
16 CRS-4402: The CSS daemon was started in exclusive mode but found an active CSS daemon on node rac1, number 1, and is terminating
		
17 CRS-2674: Start of 'ora.cssd' on 'rac2' failed
		
18 CRS-2679: Attempting to clean 'ora.cssd' on 'rac2'
		
19 CRS-2681: Clean of 'ora.cssd' on 'rac2' succeeded
		
20 CRS-2673: Attempting to stop 'ora.diskmon' on 'rac2'
		
21 CRS-2677: Stop of 'ora.diskmon' on 'rac2' succeeded
		
22 CRS-2673: Attempting to stop 'ora.cssdmonitor' on 'rac2'
		
23 CRS-2677: Stop of 'ora.cssdmonitor' on 'rac2' succeeded
		
24 CRS-2673: Attempting to stop 'ora.gpnpd' on 'rac2'
		
25 CRS-2677: Stop of 'ora.gpnpd' on 'rac2' succeeded
		
26 CRS-2673: Attempting to stop 'ora.mdnsd' on 'rac2'
		
27 CRS-2677: Stop of 'ora.mdnsd' on 'rac2' succeeded
		
28 CRS-2673: Attempting to stop 'ora.gipcd' on 'rac2'
		
29 CRS-2677: Stop of 'ora.gipcd' on 'rac2' succeeded
		
30 CRS-4000: Command Start failed, or completed with errors.
		
31 [root@rac2 bin]#

　　出现状况了(CRS-4402,CRS-2674),现在看看两个节点的的进程状况.

2.3 查看两个节点此时的进程状况

1 节点RAC1的进程状态：
		
2 [root@rac1 bin]# ps -ef|grep grid
		
3 root     16810     1  0 00:56 ?        00:00:01 /u01/grid/bin/ohasd.bin exclusive
		
4 grid     16944     1  0 00:56 ?        00:00:00 /u01/grid/bin/oraagent.bin
		
5 grid     16959     1  0 00:56 ?        00:00:00 /u01/grid/bin/gipcd.bin
		
6 grid     16964     1  0 00:56 ?        00:00:00 /u01/grid/bin/mdnsd.bin
		
7 grid     16983     1  0 00:56 ?        00:00:00 /u01/grid/bin/gpnpd.bin
		
8 root     17020     1  0 00:56 ?        00:00:00 /u01/grid/bin/orarootagent.bin
		
9 grid     17640     1  0 01:02 ?        00:00:00 /u01/grid/bin/diskmon.bin -d -f
		
10 root     17708 14498  0 01:06 pts/1    00:00:00 grep grid
		
11 [root@rac1 bin]#
		
12
		
13 节点RAC2的进程状态：
		
14 [root@rac2 bin]# ps -ef|grep grid
		
15 root      8557     1  0 01:01 ?        00:00:01 /u01/grid/bin/ohasd.bin exclusive
		
16 root      8929  7581  0 01:08 pts/1    00:00:00 grep grid
		
17 [root@rac2 bin]#

　　哈哈，在争夺资源时RAC1,RAC2两败俱伤！独占模式一般用于数据库恢复，升级时。

以非独占模式启动则是去掉 -excl：crsctl start crs

3. crsctl start crs与crsctl start cluster 区别

1 启动命令：crsctl start  cluster
		
2 --[root@rac1 bin]# ./crsctl start  cluster
		
3 CRS-2672: Attempting to start 'ora.cssdmonitor' on 'rac1'
		
4 CRS-2676: Start of 'ora.cssdmonitor' on 'rac1' succeeded
		
5 CRS-2672: Attempting to start 'ora.cssd' on 'rac1'
		
6 CRS-2672: Attempting to start 'ora.diskmon' on 'rac1'
		
7 CRS-2676: Start of 'ora.diskmon' on 'rac1' succeeded
		
8 CRS-2676: Start of 'ora.cssd' on 'rac1' succeeded
		
9 CRS-2672: Attempting to start 'ora.ctssd' on 'rac1'
		
10 CRS-2676: Start of 'ora.ctssd' on 'rac1' succeeded
		
11 CRS-2672: Attempting to start 'ora.asm' on 'rac1'
		
12 CRS-2672: Attempting to start 'ora.evmd' on 'rac1'
		
13 CRS-2676: Start of 'ora.evmd' on 'rac1' succeeded
		
14 CRS-2676: Start of 'ora.asm' on 'rac1' succeeded
		
15 CRS-2672: Attempting to start 'ora.crsd' on 'rac1'
		
16 CRS-2676: Start of 'ora.crsd' on 'rac1' succeeded
		
17 [root@rac1 bin]#

　　crsctl start/stop cluster 命令只是控制Start CRS stack(ora.cssdmonitor,ora.cssd,ora.diskmon,ora.ctssd,ora.asm,ora.crsd)。

使用命令 crsctl start/stop cluster 的前提是OHASD进程已经被启动

结论：crsctl start/stop crs 管理 CRS 包含进程 OHASD ;

　　　crsctl start/stop cluster 不包含OHASD进程,必须要先启动 OHASD 进程才可以使用

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