Avamar：MCS 關機工作流程在排清 ClientRegistryService 時停止回應

 MCS 啟動失敗，因為以下錯誤：

Startup Failed: Closing all connections to database. Server already started on port: 7778 

可使用 ClientRegistryService 當 MCS 關機時，沖洗停止回應。所有服務都會在 MCS 關機期間排清，從 ClientRegistryService.

> 08/13-12:13:51.00900 [RMI TCP Connection(109)-10.241.180.21#904] com.avamar.asn.Node._stop
> FINE: Stopping the service container...
> 08/13-12:13:51.00902 [FlushCacheThread#1042] com.avamar.asn.service.ServiceContainerImpl$FlusherThread.run
> FINE: About to flush com.avamar.mc.cr.ClientRegistryService
> --
> 08/13-12:13:51.00993 [FlushCacheThread#1042] com.avamar.asn.service.ServiceContainerImpl$FlusherThread.run
> FINE: Done flushing com.avamar.mc.cr.ClientRegistryService in 91 ms
> ...
> ...
> FINE: About to flush com.avamar.mc.pdm.ProxyDeploymentManagerService
> 08/13-12:13:52.00031 [FlushCacheThread#1092] com.avamar.asn.service.ServiceContainerImpl$FlusherThread.run
> FINE: Done flushing com.avamar.mc.pdm.ProxyDeploymentManagerService in 0 ms

此記錄僅顯示 ClientRegistryService 正在沖洗而沒有完成。
 

> 08/13-00:06:29.00971 [RMI TCP Connection(3663)-10.241.180.21#68659] com.avamar.asn.Node._stop
> FINE: Stopping the service container...
> 08/13-00:06:29.00972 [FlushCacheThread#68734] com.avamar.asn.service.ServiceContainerImpl$FlusherThread.run
> FINE: About to flush com.avamar.mc.cr.ClientRegistryService 

沖洗的主要工作 ClientRegistryService 是將所有用戶端從快取更新到 mcdb。

> 08/13-00:06:29.00972 [FlushCacheThread#68734] com.avamar.mc.cr.ClientStore.saveAll
> FINE: Start saving clients in ClientStore...
> 08/13-00:06:29.00972 [FlushCacheThread#68734] com.avamar.mc.cr.ClientStore.saveAll
> FINE: Flushing client f6a0975c4854536da1089c6800dc1212b2257a9a due to server shutdown,

尋找 PID "java.*mcserver"

 ps -eaf | grep "java.*mcserver"

手動停止 MCS 進程。 

pkill -9 <PID of "java.*mcserver">

如果在啟動期間發生此情況，請重新開機：

dpnctl start

MCS 沖洗可能會使 MCS 處於不一致的狀態，但可能性不大。若要還原先前的排清：

dpnctl start --force_mcs_restore

若要確保一切正常，且服務已成功啟動，可以檢查狀態。

dpnctl status
Identity added: /home/admin/.ssh/admin_key (/home/admin/.ssh/admin_key)
dpnctl: INFO: gsan status: up
dpnctl: INFO: MCS status: up.
dpnctl: INFO: emt status: up.
dpnctl: INFO: Backup scheduler status: up.
dpnctl: INFO: Maintenance windows scheduler status: enabled.
dpnctl: INFO: Unattended startup status: enabled.
dpnctl: INFO: avinstaller status: up.
dpnctl: INFO: ConnectEMC status: up.
dpnctl: INFO: ddrmaint-service status: up.