3 Replies Latest reply on Feb 11, 2015 11:47 AM by kucerarichard

agent fail to start: Plugin [Platforms] is required by plugins [[Apache, Augeas]] but it does not exist in the dependency graph yet

kucerarichard Feb 10, 2015 5:31 PM

Hello!

Most of my agents are failing to start. I have a few known good agents, one of which I just copied for safekeeping, maybe I can use it.

It seems to fail to download plugins. I realize there is a JON ticket open for this very problem but I have no access to support at the moment.

Does this happen a lot? Where is the reset button?

Failed to start the agent

java.lang.RuntimeException: Cannot initialize the plugin container

at org.rhq.core.pc.plugin.PluginManager.<init>(PluginManager.java:191)

at org.rhq.core.pc.PluginContainer.initialize(PluginContainer.java:290)

at org.rhq.enterprise.agent.AgentMain.startPluginContainer(AgentMain.java:2066)

at org.rhq.enterprise.agent.AgentMain.start(AgentMain.java:757)

at org.rhq.enterprise.agent.AgentMain.main(AgentMain.java:461)

Caused by: java.lang.IllegalArgumentException: Plugin [Platforms] is required by plugins [[Apache, Augeas]] but it does not exist in the dependency graph yet

at org.rhq.core.clientapi.agent.metadata.PluginDependencyGraph.getDeepDependencies(PluginDependencyGraph.java:329)

at org.rhq.core.clientapi.agent.metadata.PluginDependencyGraph.getDeepDependencies(PluginDependencyGraph.java:342)

at org.rhq.core.clientapi.agent.metadata.PluginDependencyGraph.getDeploymentOrder(PluginDependencyGraph.java:245)

at org.rhq.core.pc.plugin.PluginManager.<init>(PluginManager.java:169)

... 4 more

Thanks for any help,

Rich

1. Re: agent fail to start: Plugin [Platforms] is required by plugins [[Apache, Augeas]] but it does not exist in the dependency graph yet

kucerarichard Feb 10, 2015 6:40 PM (in response to kucerarichard)

disable/delete Apache and Augeas plugins, start/update agent, re-enable Apache/Augeas, start/update agent again?
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2. Re: agent fail to start: Plugin [Platforms] is required by plugins [[Apache, Augeas]] but it does not exist in the dependency graph yet

pathduck Feb 11, 2015 8:42 AM (in response to kucerarichard)

Rich Kucera wrote:

disable/delete Apache and Augeas plugins, start/update agent, re-enable Apache/Augeas, start/update agent again?

Did this work?

The [Platforms] plugin is required by every other plugin I guess, so without it initalized nothing else works. I guess it fails on Apache/Augeas because they are just first in the list?

Make sure your agent can contact the RHQ Server host on port 7080 or 7443 if using SSL.

Also, is your Agent running on the RHQ Server host displaying the same symptoms?
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3. Re: agent fail to start: Plugin [Platforms] is required by plugins [[Apache, Augeas]] but it does not exist in the dependency graph yet

kucerarichard Feb 11, 2015 11:47 AM (in response to pathduck)

Thanks Stian for you reply...

Ok crisis over. The problem reported in logs here and there, was the Platform plugin deploy desc was not getting parsed, so not loaded. There was no differences, no changed/corrupted jars between the agents that worked and the ones that didn't. Everything the same.

Turning off Augeas/Apache seemed to result in agent starting up, but then it kept trying to download plugins and eventually became unresponsive.

The difference was in the java version used (I had thought problem parsing xml, wtf?). Some of the platforms had an older version of 1.6. So I simply installed java 7 and the alternative was set to that. The agents all run again without problem...

we had a recent kernel upgrade, perhaps related perhaps not. The version of JON was also upgraded recently without changing to jdk 1.7 on agent machines.

The sinking feeling of losing all your agents... it's called "doubt" I think
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