Hi Pbasan,

Now i too facing the same problem. I am using CentOS-8 (Jenkins & K8s) 
running in same server. But Jenkins running separately(Not running on K8s 
cluster).  My error as follows.

SEVERE: Failed to connect to 
http://jenkins-server/jenkins/tcpSlaveAgentListener/: jenkins-server
java.io.IOException: Failed to connect to 
http://jenkins-serverjenkins/tcpSlaveAgentListener/: jenkins-server
        at 
org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver.resolve(JnlpAgentEndpointResolver.java:217)
        at hudson.remoting.Engine.innerRun(Engine.java:693)
        at hudson.remoting.Engine.run(Engine.java:518)
Caused by: java.net.UnknownHostException: jenkins-server


Please share the fix, it would be helpful. Thanks.

On Tuesday, November 21, 2017 at 4:34:58 PM UTC+5:30, WANG, YAN-HONG wrote:
>
> In my case, we run Jenkins also in K8S. So Jenkins expose with K8S service.
>
> 2017-11-21 11:38 GMT+01:00 <[email protected] <javascript:>>:
>
>> Yes we installed Jenkins separately (not on K8s cluster).
>>
>> On Tuesday, November 21, 2017 at 1:22:55 PM UTC+5:30, YAN-HONG WANG wrote:
>>>
>>> You use Jenkins, but *not using as a service?*
>>>
>>> *Or?*
>>>
>>> 2017-11-21 8:50 GMT+01:00 YAN-HONG WANG <[email protected]>:
>>>
>>>> Hi Basanta,
>>>>
>>>> Because the DNS mechanism seem are different in Ubuntu and CentOS.
>>>> If using CentOS, and install K8S by default way maybe not a problem.
>>>>
>>>> But, in Ubuntu. I need to add nameserver into 
>>>> /etc/resolvconf/resolv.conf.d/head or /etc/resolvconf/resolv.conf.d/tail.
>>>> And then 'resolvconf -u' update /etc/resolv.conf. So kubeadm will also 
>>>> add my nameserver into K8S.
>>>>
>>>> That's my environment condition.
>>>>
>>>> Hope this help you.
>>>>
>>>> Hong
>>>>
>>>>
>>>> Am Dienstag, 21. November 2017 06:06:27 UTC+1 schrieb 
>>>> [email protected]:
>>>>>
>>>>> Hi Hong,
>>>>>
>>>>> Here is the detail of the Environment 
>>>>> Installed k8s and Jenkins on the one Master server (Linux) and the 
>>>>> jobs are running on Master.(with out slave nodes)
>>>>> But when we tried on 1 Master and 2 slave nodes , the jobs are failing 
>>>>> with error 
>>>>> =============
>>>>> Nov 16, 2017 6:22:51 AM hudson.remoting.jnlp.Main$CuiListener error
>>>>> SEVERE: Failed to connect to 
>>>>> http://slc13pef.us.oracle.com:8080/tcpSlaveAgentListener/: 
>>>>> slc13pef.us.oracle.com
>>>>> java.io.IOException: Failed to connect to 
>>>>> http://slc13pef.us.oracle.com:8080/tcpSlaveAgentListener/: 
>>>>> slc13pef.us.oracle.com
>>>>>         at 
>>>>> org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver.resolve(JnlpAgentEndpointResolver.java:161)
>>>>>         at hudson.remoting.Engine.innerRun(Engine.java:495)
>>>>>         at hudson.remoting.Engine.run(Engine.java:447)
>>>>> Caused by: java.net.UnknownHostException: slc13pef.us.oracle.com
>>>>> ==================
>>>>> Here we installed Jenkins and not using as a service.
>>>>> Regards,
>>>>> Basanta
>>>>>
>>>>> On Tuesday, November 21, 2017 at 10:01:24 AM UTC+5:30, 
>>>>> [email protected] wrote:
>>>>>>
>>>>>> Hi Hong,
>>>>>> We are using Linux machine 
>>>>>> But i think the issue reported on this thread is nothing to do with 
>>>>>> Operating System.
>>>>>> Regards,
>>>>>> Basanta
>>>>>>
>>>>>> On Monday, November 20, 2017 at 9:13:08 PM UTC+5:30, YAN-HONG WANG 
>>>>>> wrote:
>>>>>>>
>>>>>>> Hello,
>>>>>>>
>>>>>>> Do you use Ubuntu machine to be your base?
>>>>>>>
>>>>>>> Hong
>>>>>>>
>>>>>>> Am Montag, 20. November 2017 12:14:02 UTC+1 schrieb 
>>>>>>> [email protected]:
>>>>>>>>
>>>>>>>> Hi Hong,
>>>>>>>> We are hitting the Same error as mentioned above .. Can you please 
>>>>>>>> share the steps followed to resolve this error.
>>>>>>>> =============
>>>>>>>> Nov 16, 2017 6:22:51 AM hudson.remoting.jnlp.Main$CuiListener error
>>>>>>>> SEVERE: Failed to connect to 
>>>>>>>> http://slc13pef.us.oracle.com:8080/tcpSlaveAgentListener/: 
>>>>>>>> slc13pef.us.oracle.com
>>>>>>>> java.io.IOException: Failed to connect to 
>>>>>>>> http://slc13pef.us.oracle.com:8080/tcpSlaveAgentListener/: 
>>>>>>>> slc13pef.us.oracle.com
>>>>>>>>         at 
>>>>>>>> org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver.resolve(JnlpAgentEndpointResolver.java:161)
>>>>>>>>         at hudson.remoting.Engine.innerRun(Engine.java:495)
>>>>>>>>         at hudson.remoting.Engine.run(Engine.java:447)
>>>>>>>> Caused by: java.net.UnknownHostException: slc13pef.us.oracle.com
>>>>>>>>  
>>>>>>>> ==================
>>>>>>>> Regards,
>>>>>>>> Basanta
>>>>>>>>
>>>>>>>>
>>>>>>>> On Thursday, October 12, 2017 at 5:40:36 PM UTC+5:30, YAN-HONG WANG 
>>>>>>>> wrote:
>>>>>>>>>
>>>>>>>>> Hello Carlos,
>>>>>>>>>
>>>>>>>>> I fixed problem already.
>>>>>>>>> Thanks.
>>>>>>>>>
>>>>>>>>> Hong
>>>>>>>>>
>>>>>>>>> Am Dienstag, 10. Oktober 2017 14:26:47 UTC+2 schrieb YAN-HONG WANG:
>>>>>>>>>>
>>>>>>>>>> Hello Carlos,
>>>>>>>>>>
>>>>>>>>>> In containerTemplate, I define one container "worker".
>>>>>>>>>>
>>>>>>>>>> --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>>>>>>>>> $ kubectl --namespace=build-env exec -it slave-0cnkz-gv0bg 
>>>>>>>>>> --container=worker *cat /etc/resolv.conf* 
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> *nameserver 10.96.0.10search build-env.svc.cluster.local 
>>>>>>>>>> svc.cluster.local cluster.localoptions ndots:5*
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>>>>>>>>> *FQDN*
>>>>>>>>>> $ kubectl --namespace=build-env exec -it slave-0cnkz-gv0bg 
>>>>>>>>>> --container=worker nslookup *jenkins.build-env.svc.cluster.local*
>>>>>>>>>> nslookup: can't resolve '(null)': Name does not resolve
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> *nslookup: can't resolve 'jenkins.build-env.svc.cluster.local': 
>>>>>>>>>> Try againcommand terminated with exit code 1*
>>>>>>>>>>
>>>>>>>>>> -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>>>>>>>>> And then I append one "*dot*" in the end of jenkins service url
>>>>>>>>>>
>>>>>>>>>> $ kubectl --namespace=build-env exec -it slave-0cnkz-gv0bg 
>>>>>>>>>> --container=worker nslookup 
>>>>>>>>>> *jenkins.build-env.svc.cluster.local.*
>>>>>>>>>> nslookup: can't resolve '(null)': Name does not resolve
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> *Name:      jenkins.build-env.svc.cluster.local.Address 1: 
>>>>>>>>>> 10.100.146.119 jenkins.build-env.svc.cluster.local*
>>>>>>>>>>
>>>>>>>>>> -------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>>>>>>>>> $ kubectl --namespace=build-env exec -it slave-0cnkz-gv0bg 
>>>>>>>>>> --container=worker nslookup *jenkins.build-env*
>>>>>>>>>> nslookup: can't resolve '(null)': Name does not resolve
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> *Name:      jenkins.build-envAddress 1: 10.100.146.119*
>>>>>>>>>>
>>>>>>>>>> -------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>>>>>>>>> kubectl --namespace=build-env exec -it slave-0cnkz-gv0bg 
>>>>>>>>>> --container=worker *curl 
>>>>>>>>>> http://jenkins.build-env:8080/tcpSlaveAgentListener/ 
>>>>>>>>>> <http://jenkins.build-env:8080/tcpSlaveAgentListener/>*
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> *  Jenkins*
>>>>>>>>>>
>>>>>>>>>> ---------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>>>>>>>>>
>>>>>>>>>> So do you know why FQDN can't be resolved by DNS?
>>>>>>>>>> JNLP is also in the same pod.
>>>>>>>>>> Suppose that JNLP container and worker container should have the 
>>>>>>>>>> same behavior, right?
>>>>>>>>>>
>>>>>>>>>> Thanks.
>>>>>>>>>>
>>>>>>>>>> Hong
>>>>>>>>>>
>>>>>>>>>> Am Freitag, 6. Oktober 2017 10:21:09 UTC+2 schrieb YAN-HONG WANG:
>>>>>>>>>>>
>>>>>>>>>>> Hello Carlos,
>>>>>>>>>>>
>>>>>>>>>>> Thanks for reply again.
>>>>>>>>>>> And I obviously have jenkins service expose in namespace 
>>>>>>>>>>> "build-env".
>>>>>>>>>>>
>>>>>>>>>>> $ kubectl --namespace=build-env get *service*
>>>>>>>>>>> NAME      TYPE       CLUSTER-IP      EXTERNAL-IP   
>>>>>>>>>>> PORT(S)                                         AGE
>>>>>>>>>>> *jenkins   *NodePort   10.98.101.107   <none>        
>>>>>>>>>>> *8080*:30808/TCP,8443:30443/TCP,50000:30500/TCP   
>>>>>>>>>>> 15h
>>>>>>>>>>>
>>>>>>>>>>> In my working environment, there are seems some DNS issue.
>>>>>>>>>>> So for example, I use this short workaround to deploy in my 
>>>>>>>>>>> jenkins.yaml.
>>>>>>>>>>> and then "*Test Connection*" can "*Connection successful*"
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> ------------------------------------------------------------------------------------
>>>>>>>>>>> hostAliases:
>>>>>>>>>>> - ip: "10.96.0.1"
>>>>>>>>>>>   hostnames:
>>>>>>>>>>>   - "kubernetes.default.svc.cluster.local"
>>>>>>>>>>>
>>>>>>>>>>> ------------------------------------------------------------------------------------
>>>>>>>>>>>
>>>>>>>>>>> So in podTemplate, is there any similar syntax like above?
>>>>>>>>>>> And that could solve *jenkins.build-env.svc.cluster.local* 
>>>>>>>>>>> naming issue in container JNLP of slave?
>>>>>>>>>>>
>>>>>>>>>>> But, if the service ip address of Jenkins is not static, that is 
>>>>>>>>>>> still a problem in my environment...
>>>>>>>>>>> Thanks.
>>>>>>>>>>>
>>>>>>>>>>> Hong
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> Am Donnerstag, 5. Oktober 2017 17:16:00 UTC+2 schrieb Carlos 
>>>>>>>>>>> Sanchez:
>>>>>>>>>>>>
>>>>>>>>>>>> you are correct your kubernetes DNS can't resolve the name, 
>>>>>>>>>>>> assuming you have a service jenkins in the build-env namespace
>>>>>>>>>>>>
>>>>>>>>>>>> On Thu, Oct 5, 2017 at 4:09 PM, WANG, YAN-HONG <
>>>>>>>>>>>> [email protected]> wrote:
>>>>>>>>>>>>
>>>>>>>>>>>>> Hello,
>>>>>>>>>>>>>
>>>>>>>>>>>>> My environment:
>>>>>>>>>>>>> Jenkins: 2.73.1
>>>>>>>>>>>>> Jenkins plugin (kubernetes: *1.0*).
>>>>>>>>>>>>> Kuberntes Server: *v1.7.7* ( One master and one minion)
>>>>>>>>>>>>> Platform: Ubuntu 16.04 (in *Synnefo *cluster environment)
>>>>>>>>>>>>>
>>>>>>>>>>>>> When I execute pipeline job with kubernetes plugin in Jenkins 
>>>>>>>>>>>>> environment.
>>>>>>>>>>>>>
>>>>>>>>>>>>> The slave-jksnf-q6dlr is stay in "offline" state.
>>>>>>>>>>>>>
>>>>>>>>>>>>> *$ ​kubectl --namespace=build-env logs slave-jksnf-q6dlr jnlp*
>>>>>>>>>>>>> Warning: JnlpProtocol3 is disabled by default, use 
>>>>>>>>>>>>> JNLP_PROTOCOL_OPTS to alter the behavior
>>>>>>>>>>>>> Warning: SECRET is defined twice in command-line arguments and 
>>>>>>>>>>>>> the environment variable
>>>>>>>>>>>>> Warning: AGENT_NAME is defined twice in command-line arguments 
>>>>>>>>>>>>> and the environment variable
>>>>>>>>>>>>> Oct 05, 2017 1:29:32 PM hudson.remoting.jnlp.Main createEngine
>>>>>>>>>>>>> INFO: Setting up slave: slave-jksnf-q6dlr
>>>>>>>>>>>>> Oct 05, 2017 1:29:32 PM hudson.remoting.jnlp.Main$CuiListener 
>>>>>>>>>>>>> <init>
>>>>>>>>>>>>> INFO: Jenkins agent is running in headless mode.
>>>>>>>>>>>>> Oct 05, 2017 1:29:32 PM hudson.remoting.Engine startEngine
>>>>>>>>>>>>> WARNING: No Working Directory. Using the legacy JAR Cache 
>>>>>>>>>>>>> location: /home/jenkins/.jenkins/cache/jars
>>>>>>>>>>>>> Oct 05, 2017 1:29:32 PM hudson.remoting.jnlp.Main$CuiListener 
>>>>>>>>>>>>> status
>>>>>>>>>>>>> INFO: Locating server among [
>>>>>>>>>>>>> http://jenkins.build-env.svc.cluster.local:8080/]
>>>>>>>>>>>>> Oct 05, 2017 1:29:37 PM hudson.remoting.jnlp.Main$CuiListener 
>>>>>>>>>>>>> error
>>>>>>>>>>>>> SEVERE: Failed to connect to 
>>>>>>>>>>>>> http://jenkins.build-env.svc.cluster.local:8080/tcpSlaveAgentListener/:
>>>>>>>>>>>>>  
>>>>>>>>>>>>> jenkins.build-env.svc.cluster.local
>>>>>>>>>>>>> java.io.IOException: Failed to connect to 
>>>>>>>>>>>>> http://jenkins.build-env.svc.cluster.local:8080/tcpSlaveAgentListener/:
>>>>>>>>>>>>>  
>>>>>>>>>>>>> jenkins.build-env.svc.cluster.local
>>>>>>>>>>>>>     at 
>>>>>>>>>>>>> org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver.resolve(JnlpAgentEndpointResolver.java:161)
>>>>>>>>>>>>>     at hudson.remoting.Engine.innerRun(Engine.java:495)
>>>>>>>>>>>>>     at hudson.remoting.Engine.run(Engine.java:447)
>>>>>>>>>>>>> Caused by: java.net.UnknownHostException: 
>>>>>>>>>>>>> jenkins.build-env.svc.cluster.local
>>>>>>>>>>>>>     at java.net
>>>>>>>>>>>>> .AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:184)
>>>>>>>>>>>>>     at 
>>>>>>>>>>>>> java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
>>>>>>>>>>>>>     at java.net.Socket.connect(Socket.java:589)
>>>>>>>>>>>>>     at sun.net.NetworkClient.doConnect(NetworkClient.java:175)
>>>>>>>>>>>>>     at 
>>>>>>>>>>>>> sun.net.www.http.HttpClient.openServer(HttpClient.java:463)
>>>>>>>>>>>>>     at 
>>>>>>>>>>>>> sun.net.www.http.HttpClient.openServer(HttpClient.java:558)
>>>>>>>>>>>>>     at sun.net.www.http.HttpClient.<init>(HttpClient.java:242)
>>>>>>>>>>>>>     at sun.net.www.http.HttpClient.New(HttpClient.java:339)
>>>>>>>>>>>>>     at sun.net.www.http.HttpClient.New(HttpClient.java:357)
>>>>>>>>>>>>>     at 
>>>>>>>>>>>>> sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1202)
>>>>>>>>>>>>>     at 
>>>>>>>>>>>>> sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1138)
>>>>>>>>>>>>>     at 
>>>>>>>>>>>>> sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1032)
>>>>>>>>>>>>>     at 
>>>>>>>>>>>>> sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:966)
>>>>>>>>>>>>>     at 
>>>>>>>>>>>>> org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver.resolve(JnlpAgentEndpointResolver.java:158)
>>>>>>>>>>>>>     ... 2 more
>>>>>>>>>>>>>
>>>>>>>>>>>>> It looks seem DNS can't solve name issue? or?
>>>>>>>>>>>>> But, in minikube environment, there is no this problem...
>>>>>>>>>>>>>
>>>>>>>>>>>>> Thanks very much.
>>>>>>>>>>>>>
>>>>>>>>>>>>> Hong
>>>>>>>>>>>>>
>>>>>>>>>>>>> -- 
>>>>>>>>>>>>> You received this message because you are subscribed to the 
>>>>>>>>>>>>> Google Groups "Jenkins Users" group.
>>>>>>>>>>>>> To unsubscribe from this group and stop receiving emails from 
>>>>>>>>>>>>> it, send an email to [email protected].
>>>>>>>>>>>>> To view this discussion on the web visit 
>>>>>>>>>>>>> https://groups.google.com/d/msgid/jenkinsci-users/CADLWyO2XJG-50ouKNe7yVm6BiQ_-cYoxQQrWg7P2iRRX7FZ%3DAA%40mail.gmail.com
>>>>>>>>>>>>>  
>>>>>>>>>>>>> <https://groups.google.com/d/msgid/jenkinsci-users/CADLWyO2XJG-50ouKNe7yVm6BiQ_-cYoxQQrWg7P2iRRX7FZ%3DAA%40mail.gmail.com?utm_medium=email&utm_source=footer>
>>>>>>>>>>>>> .
>>>>>>>>>>>>> For more options, visit https://groups.google.com/d/optout.
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>> Am Freitag, 6. Oktober 2017 10:21:09 UTC+2 schrieb YAN-HONG WANG:
>>>>>>>>>>>
>>>>>>>>>>> Hello Carlos,
>>>>>>>>>>>
>>>>>>>>>>> Thanks for reply again.
>>>>>>>>>>> And I obviously have jenkins service expose in namespace 
>>>>>>>>>>> "build-env".
>>>>>>>>>>>
>>>>>>>>>>> $ kubectl --namespace=build-env get *service*
>>>>>>>>>>> NAME      TYPE       CLUSTER-IP      EXTERNAL-IP   
>>>>>>>>>>> PORT(S)                                         AGE
>>>>>>>>>>> *jenkins   *NodePort   10.98.101.107   <none>        
>>>>>>>>>>> *8080*:30808/TCP,8443:30443/TCP,50000:30500/TCP   
>>>>>>>>>>> 15h
>>>>>>>>>>>
>>>>>>>>>>> In my working environment, there are seems some DNS issue.
>>>>>>>>>>> So for example, I use this short workaround to deploy in my 
>>>>>>>>>>> jenkins.yaml.
>>>>>>>>>>> and then "*Test Connection*" can "*Connection successful*"
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> ------------------------------------------------------------------------------------
>>>>>>>>>>> hostAliases:
>>>>>>>>>>> - ip: "10.96.0.1"
>>>>>>>>>>>   hostnames:
>>>>>>>>>>>   - "kubernetes.default.svc.cluster.local"
>>>>>>>>>>>
>>>>>>>>>>> ------------------------------------------------------------------------------------
>>>>>>>>>>>
>>>>>>>>>>> So in podTemplate, is there any similar syntax like above?
>>>>>>>>>>> And that could solve *jenkins.build-env.svc.cluster.local* 
>>>>>>>>>>> naming issue in container JNLP of slave?
>>>>>>>>>>>
>>>>>>>>>>> But, if the service ip address of Jenkins is not static, that is 
>>>>>>>>>>> still a problem in my environment...
>>>>>>>>>>> Thanks.
>>>>>>>>>>>
>>>>>>>>>>> Hong
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> Am Donnerstag, 5. Oktober 2017 17:16:00 UTC+2 schrieb Carlos 
>>>>>>>>>>> Sanchez:
>>>>>>>>>>>>
>>>>>>>>>>>> you are correct your kubernetes DNS can't resolve the name, 
>>>>>>>>>>>> assuming you have a service jenkins in the build-env namespace
>>>>>>>>>>>>
>>>>>>>>>>>> On Thu, Oct 5, 2017 at 4:09 PM, WANG, YAN-HONG <
>>>>>>>>>>>> [email protected]> wrote:
>>>>>>>>>>>>
>>>>>>>>>>>>> Hello,
>>>>>>>>>>>>>
>>>>>>>>>>>>> My environment:
>>>>>>>>>>>>> Jenkins: 2.73.1
>>>>>>>>>>>>> Jenkins plugin (kubernetes: *1.0*).
>>>>>>>>>>>>> Kuberntes Server: *v1.7.7* ( One master and one minion)
>>>>>>>>>>>>> Platform: Ubuntu 16.04 (in *Synnefo *cluster environment)
>>>>>>>>>>>>>
>>>>>>>>>>>>> When I execute pipeline job with kubernetes plugin in Jenkins 
>>>>>>>>>>>>> environment.
>>>>>>>>>>>>>
>>>>>>>>>>>>> The slave-jksnf-q6dlr is stay in "offline" state.
>>>>>>>>>>>>>
>>>>>>>>>>>>> *$ ​kubectl --namespace=build-env logs slave-jksnf-q6dlr jnlp*
>>>>>>>>>>>>> Warning: JnlpProtocol3 is disabled by default, use 
>>>>>>>>>>>>> JNLP_PROTOCOL_OPTS to alter the behavior
>>>>>>>>>>>>> Warning: SECRET is defined twice in command-line arguments and 
>>>>>>>>>>>>> the environment variable
>>>>>>>>>>>>> Warning: AGENT_NAME is defined twice in command-line arguments 
>>>>>>>>>>>>> and the environment variable
>>>>>>>>>>>>> Oct 05, 2017 1:29:32 PM hudson.remoting.jnlp.Main createEngine
>>>>>>>>>>>>> INFO: Setting up slave: slave-jksnf-q6dlr
>>>>>>>>>>>>> Oct 05, 2017 1:29:32 PM hudson.remoting.jnlp.Main$CuiListener 
>>>>>>>>>>>>> <init>
>>>>>>>>>>>>> INFO: Jenkins agent is running in headless mode.
>>>>>>>>>>>>> Oct 05, 2017 1:29:32 PM hudson.remoting.Engine startEngine
>>>>>>>>>>>>> WARNING: No Working Directory. Using the legacy JAR Cache 
>>>>>>>>>>>>> location: /home/jenkins/.jenkins/cache/jars
>>>>>>>>>>>>> Oct 05, 2017 1:29:32 PM hudson.remoting.jnlp.Main$CuiListener 
>>>>>>>>>>>>> status
>>>>>>>>>>>>> INFO: Locating server among [
>>>>>>>>>>>>> http://jenkins.build-env.svc.cluster.local:8080/]
>>>>>>>>>>>>> Oct 05, 2017 1:29:37 PM hudson.remoting.jnlp.Main$CuiListener 
>>>>>>>>>>>>> error
>>>>>>>>>>>>> SEVERE: Failed to connect to 
>>>>>>>>>>>>> http://jenkins.build-env.svc.cluster.local:8080/tcpSlaveAgentListener/:
>>>>>>>>>>>>>  
>>>>>>>>>>>>> jenkins.build-env.svc.cluster.local
>>>>>>>>>>>>> java.io.IOException: Failed to connect to 
>>>>>>>>>>>>> http://jenkins.build-env.svc.cluster.local:8080/tcpSlaveAgentListener/:
>>>>>>>>>>>>>  
>>>>>>>>>>>>> jenkins.build-env.svc.cluster.local
>>>>>>>>>>>>>     at 
>>>>>>>>>>>>> org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver.resolve(JnlpAgentEndpointResolver.java:161)
>>>>>>>>>>>>>     at hudson.remoting.Engine.innerRun(Engine.java:495)
>>>>>>>>>>>>>     at hudson.remoting.Engine.run(Engine.java:447)
>>>>>>>>>>>>> Caused by: java.net.UnknownHostException: 
>>>>>>>>>>>>> jenkins.build-env.svc.cluster.local
>>>>>>>>>>>>>     at java.net
>>>>>>>>>>>>> .AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:184)
>>>>>>>>>>>>>     at 
>>>>>>>>>>>>> java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
>>>>>>>>>>>>>     at java.net.Socket.connect(Socket.java:589)
>>>>>>>>>>>>>     at sun.net.NetworkClient.doConnect(NetworkClient.java:175)
>>>>>>>>>>>>>     at 
>>>>>>>>>>>>> sun.net.www.http.HttpClient.openServer(HttpClient.java:463)
>>>>>>>>>>>>>     at 
>>>>>>>>>>>>> sun.net.www.http.HttpClient.openServer(HttpClient.java:558)
>>>>>>>>>>>>>     at sun.net.www.http.HttpClient.<init>(HttpClient.java:242)
>>>>>>>>>>>>>     at sun.net.www.http.HttpClient.New(HttpClient.java:339)
>>>>>>>>>>>>>     at sun.net.www.http.HttpClient.New(HttpClient.java:357)
>>>>>>>>>>>>>     at 
>>>>>>>>>>>>> sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1202)
>>>>>>>>>>>>>     at 
>>>>>>>>>>>>> sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1138)
>>>>>>>>>>>>>     at 
>>>>>>>>>>>>> sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1032)
>>>>>>>>>>>>>     at 
>>>>>>>>>>>>> sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:966)
>>>>>>>>>>>>>     at 
>>>>>>>>>>>>> org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver.resolve(JnlpAgentEndpointResolver.java:158)
>>>>>>>>>>>>>     ... 2 more
>>>>>>>>>>>>>
>>>>>>>>>>>>> It looks seem DNS can't solve name issue? or?
>>>>>>>>>>>>> But, in minikube environment, there is no this problem...
>>>>>>>>>>>>>
>>>>>>>>>>>>> Thanks very much.
>>>>>>>>>>>>>
>>>>>>>>>>>>> Hong
>>>>>>>>>>>>>
>>>>>>>>>>>>> -- 
>>>>>>>>>>>>> You received this message because you are subscribed to the 
>>>>>>>>>>>>> Google Groups "Jenkins Users" group.
>>>>>>>>>>>>> To unsubscribe from this group and stop receiving emails from 
>>>>>>>>>>>>> it, send an email to [email protected].
>>>>>>>>>>>>> To view this discussion on the web visit 
>>>>>>>>>>>>> https://groups.google.com/d/msgid/jenkinsci-users/CADLWyO2XJG-50ouKNe7yVm6BiQ_-cYoxQQrWg7P2iRRX7FZ%3DAA%40mail.gmail.com
>>>>>>>>>>>>>  
>>>>>>>>>>>>> <https://groups.google.com/d/msgid/jenkinsci-users/CADLWyO2XJG-50ouKNe7yVm6BiQ_-cYoxQQrWg7P2iRRX7FZ%3DAA%40mail.gmail.com?utm_medium=email&utm_source=footer>
>>>>>>>>>>>>> .
>>>>>>>>>>>>> For more options, visit https://groups.google.com/d/optout.
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> -- 
>>>> You received this message because you are subscribed to a topic in the 
>>>> Google Groups "Jenkins Users" group.
>>>> To unsubscribe from this topic, visit 
>>>> https://groups.google.com/d/topic/jenkinsci-users/SFMkjuU-ONI/unsubscribe
>>>> .
>>>> To unsubscribe from this group and all its topics, send an email to 
>>>> [email protected].
>>>> To view this discussion on the web visit 
>>>> https://groups.google.com/d/msgid/jenkinsci-users/9fbf3f34-bd14-46aa-b1b9-ba84c917fc25%40googlegroups.com
>>>>  
>>>> <https://groups.google.com/d/msgid/jenkinsci-users/9fbf3f34-bd14-46aa-b1b9-ba84c917fc25%40googlegroups.com?utm_medium=email&utm_source=footer>
>>>> .
>>>>
>>>> For more options, visit https://groups.google.com/d/optout.
>>>>
>>>
>>> -- 
>> You received this message because you are subscribed to a topic in the 
>> Google Groups "Jenkins Users" group.
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>> To unsubscribe from this group and all its topics, send an email to 
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>> .
>>
>> For more options, visit https://groups.google.com/d/optout.
>>
>
>

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