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https://issues.apache.org/jira/browse/CLOUDSTACK-3714?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13717712#comment-13717712
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Donal Lafferty commented on CLOUDSTACK-3714:
--------------------------------------------
This issue is due to JSON serialisation changes that were not made backwards
compatible. Look to http://markmail.org/message/5blyteot6nxnju3d for a brief
explanation.
This issue also affects SystemVMs. The default download URL is for system VMs
built with v4.1 serialisation. These are incompatible with the current
managment server code. The issue for this probelm is
https://issues.apache.org/jira/browse/CLOUDSTACK-3377
> 4.2 KVM agent sends wrong StartupRoutingCommand to 4.1 management server
> ------------------------------------------------------------------------
>
> Key: CLOUDSTACK-3714
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-3714
> Project: CloudStack
> Issue Type: Bug
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Components: KVM
> Affects Versions: 4.2.0
> Environment: 4.2 agent with 4.1 management server
> Reporter: Wido den Hollander
> Fix For: 4.2.0
>
>
> When the Agent starts it sends a StartupRoutingCommand to the management
> server, but this has changed it seems:
> In 4.1 the Agent sends this JSON:
> Sending Startup: Seq 4-0: { Cmd , MgmtId: -1, via: 4, Ver: v1, Flags: 1,
> [{"StartupRoutingCommand":{
> In 4.2 however the JSON data starts with:
> Sending Startup: Seq 1-6: { Cmd , MgmtId: -1, via: 1, Ver: v1, Flags: 1,
> [{"com.cloud.agent.api.StartupRoutingCommand":{
> So the Agent sends the full name of the class and this confuses the
> Management server, it throws an Exception:
> Caused by: com.cloud.utils.exception.CloudRuntimeException: can't find
> com.cloud.agent.api.com.cloud.agent.api.StartupRoutingCommand
> at
> com.cloud.agent.transport.ArrayTypeAdaptor.deserialize(ArrayTypeAdaptor.java:79)
> at
> com.cloud.agent.transport.ArrayTypeAdaptor.deserialize(ArrayTypeAdaptor.java:37)
> at
> com.google.gson.JsonDeserializerExceptionWrapper.deserialize(JsonDeserializerExceptionWrapper.java:51)
> ... 15 more
> So it's searching for
> "com.cloud.agent.api.com.cloud.agent.api.StartupRoutingCommand" which
> obviously fails.
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