Hi Vivek,

Please check the CloudStack detected Xenserver version in either UI or database.

You may try an option to reinitialize the Xenserver host by clearing the tags 
on the host and try reconnecting from CloudStack UI.
Run the following command on Xenserver and reconnect the host.

# for host in $(xe host-list | grep ^uuid | awk '{print $NF}') ; do xe 
host-param-clear uuid=$host param-name=tags; done;

Hope this helps.

Regards,
Harikrishna
________________________________
From: Suresh Anaparti <[email protected]>
Sent: Wednesday, June 1, 2022 3:07 PM
To: [email protected] <[email protected]>
Subject: Re: XenServer Agent is not coming up after upgrading from 7.1 to 8.2

Hi Vivek,

This discussion thread might provide you some inputs: 
https://lists.apache.org/thread/7q6yybm3qcms21qcd8945kvrygpr1v86

Also, check the docs here: 
http://docs.cloudstack.apache.org/en/4.16.1.0/installguide/hypervisor/xenserver.html#upgrading-xenserver-versions,
 and see if you have missed any upgrade step.


Regards,
Suresh

On 01/06/22, 2:17 PM, "Vivek Kumar" <[email protected]> wrote:

    Hello Guys,


    We have recently upgraded our XenServer  from 7.1 to 8.2. We are using 
CloudStack 4.16.1. But after the upgradation my status of host is showing 
alert. I have gone through the logs getting below error. Can someone help me 
out for this.



    —————————————————————


    
rZCUKmFN6d4veFOrfeDI3u_9aDd-feyXbqPD-9Ua0Le6m9_Y7LciAVHmSw&command=listSystemVms&response=json&signatureVersion=3&expires=2022-06-01T08%3A43%3A33%2B0000&signature=x7KQg4LW2XPtTf%2BHHVn0Fm599xA%3D
    2022-06-01 14:00:51,613 DEBUG [c.c.u.s.SSHCmdHelper] 
(DirectAgent-13:ctx-797e05c2) (logid:3256e16e) Executing cmd: rm -f 
/opt/xensource/sm/hostvmstats.py 
/opt/xensource/bin/copy_vhd_to_secondarystorage.sh 
/opt/xensource/bin/copy_vhd_from_secondarystorage.sh 
/opt/xensource/bin/create_privatetemplate_from_snapshot.sh 
/opt/xensource/bin/vhd-util /opt/cloud/bin/copy_vhd_to_secondarystorage.sh 
/opt/cloud/bin/copy_vhd_from_secondarystorage.sh 
/opt/cloud/bin/create_privatetemplate_from_snapshot.sh /opt/cloud/bin/vhd-util
    2022-06-01 14:00:52,750 DEBUG [c.c.a.ApiServlet] 
(qtp1850777594-19:ctx-5c391d12) (logid:fb2dbf4b) ===START===  172.31.29.44 -- 
GET  
listall=True&apiKey=W0EWPYRPQu51YPDQ8s_0b4wDDuSqrZCUKmFN6d4veFOrfeDI3u_9aDd-feyXbqPD-9Ua0Le6m9_Y7LciAVHmSw&command=listVpnConnections&response=json&signatureVersion=3&expires=2022-06-01T08%3A43%3A35%2B0000&signature=TBKYjvgMLESFTna9iXeGTJdKtc0%3D
    2022-06-01 14:00:52,756 DEBUG [c.c.a.ApiServer] 
(qtp1850777594-19:ctx-5c391d12 ctx-9cd12123) (logid:fb2dbf4b) CIDRs from which 
account 'Acct[0d808973-19be-11eb-9555-005056961200-admin] -- Account {"id": 2, 
"name": "admin", "uuid": "0d808973-19be-11eb-9555-005056961200"}' is allowed to 
perform API calls: 0.0.0.0/0,::/0
    2022-06-01 14:00:52,761 DEBUG [c.c.a.ApiServlet] 
(qtp1850777594-19:ctx-5c391d12 ctx-9cd12123 ctx-6326bb8c) (logid:fb2dbf4b) 
===END===  172.31.29.44 -- GET  
listall=True&apiKey=W0EWPYRPQu51YPDQ8s_0b4wDDuSqrZCUKmFN6d4veFOrfeDI3u_9aDd-feyXbqPD-9Ua0Le6m9_Y7LciAVHmSw&command=listVpnConnections&response=json&signatureVersion=3&expires=2022-06-01T08%3A43%3A35%2B0000&signature=TBKYjvgMLESFTna9iXeGTJdKtc0%3D
    2022-06-01 14:00:52,862 INFO  [c.c.h.x.r.CitrixResourceBase] 
(DirectAgent-13:ctx-797e05c2) (logid:3256e16e) Host 172.31.21.5 
OpaqueRef:d1a2d70a-25bd-37b3-c581-2249ccf88fc0: Host 172.31.21.5 is already 
setup.
    2022-06-01 14:00:52,868 WARN  [c.c.h.x.r.CitrixResourceBase] 
(DirectAgent-13:ctx-797e05c2) (logid:3256e16e) callHostPlugin failed for cmd: 
setIptables with args  due to The requested plugin could not be found.
    2022-06-01 14:00:52,869 WARN  [c.c.h.x.r.w.x.CitrixSetupCommandWrapper] 
(DirectAgent-13:ctx-797e05c2) (logid:3256e16e) Unable to setup
    com.cloud.utils.exception.CloudRuntimeException: callHostPlugin failed for 
cmd: setIptables with args  due to The requested plugin could not be found.
            at 
com.cloud.hypervisor.xenserver.resource.CitrixResourceBase.callHostPlugin(CitrixResourceBase.java:367)
            at 
com.cloud.hypervisor.xenserver.resource.CitrixResourceBase.setIptables(CitrixResourceBase.java:4706)
            at 
com.cloud.hypervisor.xenserver.resource.wrapper.xenbase.CitrixSetupCommandWrapper.execute(CitrixSetupCommandWrapper.java:63)
            at 
com.cloud.hypervisor.xenserver.resource.wrapper.xenbase.CitrixSetupCommandWrapper.execute(CitrixSetupCommandWrapper.java:45)
            at 
com.cloud.hypervisor.xenserver.resource.wrapper.xenbase.CitrixRequestWrapper.execute(CitrixRequestWrapper.java:122)
            at 
com.cloud.hypervisor.xenserver.resource.CitrixResourceBase.executeRequest(CitrixResourceBase.java:1758)
            at 
com.cloud.agent.manager.DirectAgentAttache$Task.runInContext(DirectAgentAttache.java:315)
            at 
org.apache.cloudstack.managed.context.ManagedContextRunnable$1.run(ManagedContextRunnable.java:48)
            at 
org.apache.cloudstack.managed.context.impl.DefaultManagedContext$1.call(DefaultManagedContext.java:55)
            at 
org.apache.cloudstack.managed.context.impl.DefaultManagedContext.callWithContext(DefaultManagedContext.java:102)
            at 
org.apache.cloudstack.managed.context.impl.DefaultManagedContext.runWithContext(DefaultManagedContext.java:52)
            at 
org.apache.cloudstack.managed.context.ManagedContextRunnable.run(ManagedContextRunnable.java:45)
            at 
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
            at 
java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
            at 
java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304)
            at 
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
            at 
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
            at java.base/java.lang.Thread.run(Thread.java:834)
    2022-06-01 14:00:52,869 DEBUG [c.c.a.m.DirectAgentAttache] 
(DirectAgent-13:ctx-797e05c2) (logid:3256e16e) Seq 1-2294302535168557057: 
Response Received:
    2022-06-01 14:00:52,869 DEBUG [c.c.a.t.Request] 
(DirectAgent-13:ctx-797e05c2) (logid:3256e16e) Seq 1-2294302535168557057: 
Processing:  { Ans: , MgmtId: 345050108278, via: 1(demonew), Ver: v1, Flags: 
110, 
[{"com.cloud.agent.api.SetupAnswer":{"_reconnect":"true","result":"false","details":"callHostPlugin
 failed for cmd: setIptables with args  due to The requested plugin could not 
be found.","wait":"0","bypassHostMaintenance":"false"}}] }
    2022-06-01 14:00:52,871 DEBUG [c.c.a.m.AgentAttache] 
(DirectAgent-13:ctx-797e05c2) (logid:3256e16e) Seq 1-2294302535168557057: No 
more commands found
    2022-06-01 14:00:52,871 DEBUG [c.c.a.t.Request] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Seq 1-2294302535168557057: 
Received:  { Ans: , MgmtId: 345050108278, via: 1(demonew), Ver: v1, Flags: 110, 
{ SetupAnswer } }
    2022-06-01 14:00:52,871 WARN  [c.c.h.x.d.XcpServerDiscoverer] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Unable to setup agent 1 due to 
callHostPlugin failed for cmd: setIptables with args  due to The requested 
plugin could not be found.
    2022-06-01 14:00:52,871 INFO  [c.c.u.e.CSExceptionErrorCode] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Could not find exception: 
com.cloud.exception.ConnectionException in error code list for exceptions
    2022-06-01 14:00:52,871 WARN  [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Monitor XcpServerDiscoverer 
says there is an error in the connect process for 1 due to Reinitialize agent 
after setup.
    2022-06-01 14:00:52,871 INFO  [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Host 1 is disconnecting with 
event AgentDisconnected
    2022-06-01 14:00:52,876 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) The next status of agent 1is 
Alert, current status is Connecting
    2022-06-01 14:00:52,876 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Deregistering link for 1 with 
state Alert
    2022-06-01 14:00:52,876 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Remove Agent : 1
    2022-06-01 14:00:52,876 DEBUG [c.c.a.m.DirectAgentAttache] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Processing disconnect 
1(demonew)
    2022-06-01 14:00:52,876 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Sending Disconnect to 
listener: com.cloud.hypervisor.xenserver.discoverer.XcpServerDiscoverer
    2022-06-01 14:00:52,876 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Sending Disconnect to 
listener: com.cloud.hypervisor.hyperv.discoverer.HypervServerDiscoverer
    2022-06-01 14:00:52,876 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Sending Disconnect to 
listener: com.cloud.storage.listener.StoragePoolMonitor
    2022-06-01 14:00:52,878 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Sending Disconnect to 
listener: org.apache.cloudstack.engine.orchestration.NetworkOrchestrator
    2022-06-01 14:00:52,879 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Sending Disconnect to 
listener: com.cloud.network.security.SecurityGroupListener
    2022-06-01 14:00:52,879 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Sending Disconnect to 
listener: com.cloud.hypervisor.vmware.manager.VmwareManagerImpl
    2022-06-01 14:00:52,879 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Sending Disconnect to 
listener: com.cloud.vm.ClusteredVirtualMachineManagerImpl
    2022-06-01 14:00:52,879 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Sending Disconnect to 
listener: com.cloud.hypervisor.vmware.manager.VmwareManagerImpl
    2022-06-01 14:00:52,879 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Sending Disconnect to 
listener: com.cloud.vm.ClusteredVirtualMachineManagerImpl
    2022-06-01 14:00:52,879 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Sending Disconnect to 
listener: com.cloud.storage.secondary.SecondaryStorageListener
    2022-06-01 14:00:52,879 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Sending Disconnect to 
listener: com.cloud.deploy.DeploymentPlanningManagerImpl
    2022-06-01 14:00:52,879 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Sending Disconnect to 
listener: com.cloud.agent.manager.AgentManagerImpl$BehindOnPingListener
    2022-06-01 14:00:52,879 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Sending Disconnect to 
listener: com.cloud.agent.manager.AgentManagerImpl$SetHostParamsListener
    2022-06-01 14:00:52,879 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Sending Disconnect to 
listener: com.cloud.storage.upload.UploadListener
    2022-06-01 14:00:52,879 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Sending Disconnect to 
listener: com.cloud.network.SshKeysDistriMonitor
    2022-06-01 14:00:52,879 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Sending Disconnect to 
listener: com.cloud.network.router.VpcVirtualNetworkApplianceManagerImpl
    2022-06-01 14:00:52,879 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Sending Disconnect to 
listener: com.cloud.consoleproxy.ConsoleProxyListener
    2022-06-01 14:00:52,879 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Sending Disconnect to 
listener: com.cloud.storage.download.DownloadListener
    2022-06-01 14:00:52,879 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Sending Disconnect to 
listener: com.cloud.network.SshKeysDistriMonitor
    2022-06-01 14:00:52,880 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Sending Disconnect to 
listener: com.cloud.network.router.VirtualNetworkApplianceManagerImpl
    2022-06-01 14:00:52,880 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Sending Disconnect to 
listener: com.cloud.capacity.StorageCapacityListener
    2022-06-01 14:00:52,880 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Sending Disconnect to 
listener: com.cloud.capacity.ComputeCapacityListener
    2022-06-01 14:00:52,880 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Sending Disconnect to 
listener: com.cloud.network.NetworkUsageManagerImpl$DirectNetworkStatsListener
    2022-06-01 14:00:52,880 DEBUG [c.c.n.NetworkUsageManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Disconnected called on 1 with 
status Alert
    2022-06-01 14:00:52,880 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Sending Disconnect to 
listener: com.cloud.storage.LocalStoragePoolListener
    2022-06-01 14:00:52,880 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Sending Disconnect to 
listener: com.cloud.hypervisor.kvm.discoverer.KvmServerDiscoverer
    2022-06-01 14:00:52,880 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Sending Disconnect to 
listener: com.cloud.hypervisor.kvm.discoverer.LxcServerDiscoverer
    2022-06-01 14:00:52,880 DEBUG [c.c.a.m.AgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Transition:[Resource state = 
Enabled, Agent event = AgentDisconnected, Host id = 1, name = demonew]
    2022-06-01 14:00:52,882 DEBUG [c.c.a.m.ClusteredAgentManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Notifying other nodes of to 
disconnect
    2022-06-01 14:00:52,883 WARN  [c.c.r.ResourceManagerImpl] 
(AgentTaskPool-10:ctx-2116547d) (logid:3256e16e) Unable to connect due to
    com.cloud.exception.ConnectionException: Reinitialize agent after setup.
            at 
com.cloud.hypervisor.xenserver.discoverer.XcpServerDiscoverer.processConnect(XcpServerDiscoverer.java:637)
            at 
com.cloud.agent.manager.AgentManagerImpl.notifyMonitorsOfConnection(AgentManagerImpl.java:564)
            at 
com.cloud.agent.manager.AgentManagerImpl.handleDirectConnectAgent(AgentManagerImpl.java:1535)
            at 
com.cloud.resource.ResourceManagerImpl.createHostAndAgent(ResourceManagerImpl.java:2377)
            at 
com.cloud.resource.ResourceManagerImpl.createHostAndAgent(ResourceManagerImpl.java:2510)
            at jdk.internal.reflect.GeneratedMethodAccessor636.invoke(Unknown 
Source)
            at 
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
            at java.base/java.lang.reflect.Method.invoke(Method.java:566)
            at 
org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:344)
            at 
org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:198)
            at 
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
            at 
org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:97)
            at 
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
            at 
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:215)
            at com.sun.proxy.$Proxy194.createHostAndAgent(Unknown Source)
            at 
com.cloud.agent.manager.AgentManagerImpl$SimulateStartTask.runInContext(AgentManagerImpl.java:1159)
            at 
org.apache.cloudstack.managed.context.ManagedContextRunnable$1.run(ManagedContextRunnable.java:48)
            at 
org.apache.cloudstack.managed.context.impl.DefaultManagedContext$1.call(DefaultManagedContext.java:55)
            at 
org.apache.cloudstack.managed.context.impl.DefaultManagedContext.callWithContext(DefaultManagedContext.java:102)
            at 
org.apache.cloudstack.managed.context.impl.DefaultManagedContext.runWithContext(DefaultManagedContext.java:52)
            at 
org.apache.cloudstack.managed.context.ManagedContextRunnable.run(ManagedContextRunnable.java:45)
            at 
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
            at 
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
            at java.base/java.lang.Thread.run(Thread.java:834)





    Vivek Kumar
    Sr. Manager - Cloud & DevOps
    TechOps | Indiqus Technologies

    + 91 7503460090 <tel:++91+7503460090>
         [email protected] <mailto:[email protected]>
         www.indiqus.com<http://www.indiqus.com> <https://www.indiqus.com/>




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