Hi Chris,
Following are my setup. It seems to work but I am not sure if I did
things correctly:
1. In my server.xml, I followed the setup in javadoc
https://tomcat.apache.org/tomcat-9.0-doc/api/org/apache/catalina/tribes/membership/cloud/DNSMembershipProvider.html
for
the cluster tag.
2. In my service (not sure this is right or wrong),
- metadata.name is the name of my app appended with -membership.
- spec.ports.port I set to my connector port
- spec.selector.app I set it to the name of my app
apiVersion: v1
kind: Service
metadata:
annotations:
service.alpha.kubernetes.io/tolerate-unready-endpoints: "true"
description: "The service for tomcat cluster membership."
name: myapp-membership
spec:
clusterIP: None
ports:
- name: membership
port: 80
selector:
app: myapp
3. In my StatefulSet, I put the env settings in
spec.template.spec.containers:
env:
- name: DNS_MEMBERSHIP_SERVICE_NAME
value: "myapp-membership"
Still not sure if port 80 makes any sense (that's the port for my http
listener which is loadbalanced by an nginx) but it seems to work.
Thanks.
Regards,
Kok Hoor
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On Thu, 18 Aug 2022 at 02:37, Christopher Schultz <
[email protected]> wrote:
> All,
>
> If you are havig issues with the CloudMembershipService, I would highly
> recommend that you continue to have this discussion.
>
> The original author (remm) was mostly targeting OpenShift (he works for
> RedHat, so it's not a surprise) but it doesn't mean that its support
> cannot expand to include other deployments.
>
> If the DNSMembershipService is more appropriate for k8s-on-Azure, that's
> fine, but if there is a community need (and especially if you are
> willing to do the research and contribute code) we'd be happy to
> accomodate you.
>
> -chris
>
> On 8/14/22 03:52, Chew Kok Hoor wrote:
> > Hi,
> >
> > I am trying to setup Tomcat clustering running in AKS, however the
> > standard settings don't seem to work.
> >
> > As per the documentation I have setup following Cluster configuration in
> > server.xml inside my <Host> tag:
> > <Cluster
> className="org.apache.catalina.ha.tcp.SimpleTcpCluster">
> > <Channel
> > className="org.apache.catalina.tribes.group.GroupChannel">
> > <Membership
> >
> className="org.apache.catalina.tribes.membership.cloud.CloudMembershipService"/>
> > </Channel>
> > </Cluster>
> >
> > But I received a 'Failed connection to
> > https://10.0.0.1:443/api/v1/namespaces/tomcat/pods' error. Is there any
> way
> > to resolve this?
> >
> > Error message:
> >
> > INFO: Cluster is about to start
> > Aug 14, 2022 3:44:26 PM org.apache.catalina.tribes.transport.ReceiverBase
> > bind
> > INFO: Receiver Server Socket bound to:[/10.240.0.76:4000]
> > Aug 14, 2022 3:44:26 PM
> > org.apache.catalina.tribes.membership.cloud.CloudMembershipProvider
> > getNamespace
> > WARNING: Namespace not set
> > Aug 14, 2022 3:44:26 PM
> > org.apache.catalina.tribes.membership.cloud.KubernetesMembershipProvider
> > fetchMembers
> > SEVERE: Failed to open stream
> > java.io.IOException: Failed connection to [
> > https://10.0.0.1:443/api/v1/namespaces/tomcat/pods] with token
> > [--redacted--]
> > at
> >
> org.apache.catalina.tribes.membership.cloud.TokenStreamProvider.openStream(TokenStreamProvider.java:56)
> > at
> >
> org.apache.catalina.tribes.membership.cloud.KubernetesMembershipProvider.fetchMembers(KubernetesMembershipProvider.java:136)
> > at
> >
> org.apache.catalina.tribes.membership.cloud.CloudMembershipProvider.heartbeat(CloudMembershipProvider.java:127)
> > at
> >
> org.apache.catalina.tribes.membership.cloud.KubernetesMembershipProvider.start(KubernetesMembershipProvider.java:116)
> > at
> >
> org.apache.catalina.tribes.membership.cloud.CloudMembershipService.start(CloudMembershipService.java:152)
> > at
> >
> org.apache.catalina.tribes.group.ChannelCoordinator.internalStart(ChannelCoordinator.java:192)
> > at
> >
> org.apache.catalina.tribes.group.ChannelCoordinator.start(ChannelCoordinator.java:106)
> > at
> >
> org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInterceptorBase.java:190)
> > at
> >
> org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInterceptorBase.java:190)
> > at
> >
> org.apache.catalina.tribes.group.interceptors.MessageDispatchInterceptor.start(MessageDispatchInterceptor.java:224)
> > at
> >
> org.apache.catalina.tribes.group.ChannelInterceptorBase.start(ChannelInterceptorBase.java:190)
> > at
> >
> org.apache.catalina.tribes.group.GroupChannel.start(GroupChannel.java:504)
> > at
> >
> org.apache.catalina.ha.tcp.SimpleTcpCluster.startInternal(SimpleTcpCluster.java:564)
> > at
> > org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
> > at
> >
> org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:908)
> > at
> >
> org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:835)
> > at
> > org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
> > at
> >
> org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1396)
> > at
> >
> org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1386)
> > at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
> > at
> >
> org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
> > at
> > java.base/java.util.concurrent.AbstractExecutorService.submit(Unknown
> > Source)
> > at
> >
> org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:919)
> > at
> >
> org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:265)
> > at
> > org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
> > at
> >
> org.apache.catalina.core.StandardService.startInternal(StandardService.java:432)
> > at
> > org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
> > at
> >
> org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930)
> > at
> > org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
> > at org.apache.catalina.startup.Catalina.start(Catalina.java:772)
> > at
> > java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native
> > Method)
> > at
> > java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown
> > Source)
> > at
> >
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown
> > Source)
> > at java.base/java.lang.reflect.Method.invoke(Unknown Source)
> > at
> org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:345)
> > at
> org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:476)
> > Caused by: java.io.IOException: Server returned HTTP response code: 403
> for
> > URL: https://10.0.0.1:443/api/v1/namespaces/tomcat/pods
> > at
> >
> java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown
> > Source)
> > at
> >
> java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown
> > Source)
> > at
> >
> java.base/sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown
> > Source)
> > at
> >
> org.apache.catalina.tribes.membership.cloud.AbstractStreamProvider.openStream(AbstractStreamProvider.java:110)
> > at
> >
> org.apache.catalina.tribes.membership.cloud.TokenStreamProvider.openStream(TokenStreamProvider.java:53)
> > ... 35 more
> >
> > Aug 14, 2022 3:44:27 PM
> org.apache.catalina.ha.session.JvmRouteBinderValve
> > startInternal
> > INFO: JvmRouteBinderValve started
> >
> > Thanks.
> >
> > Regards,
> > Kok Hoor
> >
> > [image: width=]
> > <
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> >
>
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