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https://issues.apache.org/jira/browse/CLOUDSTACK-10246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16383336#comment-16383336
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ASF GitHub Bot commented on CLOUDSTACK-10246:
---------------------------------------------

DaanHoogland commented on a change in pull request #2474: CLOUDSTACK-10246 Fix 
Host HA and VM HA issues
URL: https://github.com/apache/cloudstack/pull/2474#discussion_r171784055
 
 

 ##########
 File path: 
engine/orchestration/src/com/cloud/agent/manager/AgentManagerImpl.java
 ##########
 @@ -843,72 +846,103 @@ protected boolean 
handleDisconnectWithInvestigation(final AgentAttache attache,
                 s_logger.debug("Caught exception while getting agent's next 
status", ne);
             }
 
+            // For log and alert purposes later
+            final DataCenterVO dcVO = _dcDao.findById(host.getDataCenterId());
+            final HostPodVO podVO = _podDao.findById(host.getPodId());
+            final String hostDesc = "[name: " + host.getName() + " (id:" + 
host.getId() + "), availability zone: " + dcVO.getName() + ", pod: " + 
podVO.getName() + "]";
+            final String hostShortDesc = "Host " + host.getName() + " (id:" + 
host.getId() + ")";
+
+            final ResourceState resourceState = host.getResourceState();
+            if (resourceState == ResourceState.Disabled || resourceState == 
ResourceState.Maintenance || resourceState == ResourceState.ErrorInMaintenance) 
{
+                // If we are in this resourceState, no need to investigate or 
do anything.  AgentMonitor will handle when in these resourceStates
+                s_logger.info(hostShortDesc + " has disconnected with event " 
+ event + ",  but is in Resource State of " + resourceState + ", so doing 
nothing");
+                return true;
+            }
+
             if (nextStatus == Status.Alert) {
-                /* OK, we are going to the bad status, let's see what happened 
*/
-                s_logger.info("Investigating why host " + hostId + " has 
disconnected with event " + event);
+                /* Our next Agent transition state is Alert
+                 * Let's see if the host down or why we had this event
+                 */
+                s_logger.info("Investigating why host " + hostShortDesc + " 
has disconnected with event " + event);
 
 Review comment:
   👍 good improvement, but though it is only (a comment and) a log statement, 
this entails an interface of the system. the ecosystem may query logs for the 
text and no longer find the hostId thus not being able to take mitigating 
actions any more. I'd rather see a less destructive change like 'hostId + " (" 
+ hostShortDesc + ") "'
   
   We may get away with it but it does require extensive testing by the whole 
community :/.

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> VM HA issues
> ------------
>
>                 Key: CLOUDSTACK-10246
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-10246
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the 
> default.) 
>          Components: Management Server
>    Affects Versions: 4.11.0.0
>         Environment: My setup is CentOS 7 Management server with 3 CentOS 7 
> KVM HVs, NFS as primary and secondary storages.
>            Reporter: Nux
>            Priority: Major
>
> VM HA fails to kick in when one of the hypervisors goes down.
> It even fails to restart the system VMs which remain down along with the 
> instances until the affected HV comes back online.
> When I crash or power off the HV the system marks it in the hosts list as 
> "Alert" or "Disconnected" respectively. It should get changed to "Down" after 
> that, but this never happens.
>  
> I have tried various combinations of setups (Adv, Basic), none succeeded.
>  
> My instances use HA enabled offerings.
> Management server DEBUG logs here:
> [http://tmp.nux.ro/CW4-vmhafail-411rc1.txt]
>  
>  
>  
>  
>  



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