Nuxeo Cluster - Load Balancer - Session replication failed

Question

I have configured apache2.4 http load balancer as :

ProxyPass /nuxeo balancer://sticky-balancer   stickysession=JSESSIONID|jsessionid nofailover=On

<Proxy balancer://sticky-balancer >
BalancerMember xxxxxxx.40:8080/nuxeo route=nxworker1
BalancerMember xxxxxxx.41:8080/nuxeo route=nxworker2
</Proxy >
ProxyPreserveHost On

On nuxeo instances I have done config as suggested on nuxeo docs at 40:
nuxeo.server.jvmRoute=nxworker1 and nuxeo.server.jvmRoute=nxworker2 at 41

When one of instances goes down for ex 40, during a user is connected and working on it, it needed to do login again because session seems is not replicated for node 41

Have any body any suggestion?

Thanks

Answer 1

That is expected: the session is sticky, not replicated. As stated in the documentation, you will have to authenticate again or not, depending on your configuration and architecture:

The Nuxeo Platform requires all calls to be authenticated. Depending on your architecture, authentication can be stateless (ex: Basic Auth) or stateful (ex: Form + Cookie). Either way, you probably don't want to replay authentication during all calls.

That's why having a session based authentication + session affinity can make sense: you don't have to re-authenticate each time you call the server.

If the session affinity can not be restored, for example because the target server has been shutdown:

• stateless authentication will be automatically replayed (ex: Basic Auth)
• for stateful authentication:
  • if you have a SSO this will be transparent
  • if you don't have a SSO, user will have to authenticate again.