Hi Olga, Some responses inline/
Erik M Jacobs, RHCA Principal Technical Marketing Manager, OpenShift Enterprise Red Hat, Inc. Phone: 646.462.3745 Email: ejac...@redhat.com AOL Instant Messenger: ejacobsatredhat Twitter: @ErikonOpen Freenode: thoraxe On Mon, Apr 25, 2016 at 9:34 AM, ABDALA Olga <olga.abd...@solucom.fr> wrote: > Hello all, > > > > I am done with my *origin advanced installation* (thanks to your useful > help) which architecture is composed of *4 virtualized servers* (on the > same network): > > - 1 Master > > - 2 Nodes > > - 1 VM hosting Ansible > > > > My next steps are to implement/test some use cases with a *three-tier > App*(each > App’s tier being hosted on a different VM): > > - The * horizontal scalability*; > > - The * load-balancing* of the Nodes : Keep the system running even > if one of the VMs goes down; > > - App’s monitoring using *Origin API*: Allow the Origin API to > “tell” the App on which VM is hosted each tier. (I still don’t know how to > test that though…) > > > > There are some * notions* that are still not clear to me: > > - From my web console, how can I know *on which Node has my App > been deployed*? > If you look in the Browse -> Pods -> select a pod, you should see the node where the pod is running. > - How can I put *each component of my App* on a *separated Node*? > > - How does the “*zones*” concept in origin work? > These two are closely related. 1) In your case it sounds like you would want a zone for each tier: appserver, web server, db 2) This would require a node with a label of, for example, zone=appserver 3) When you create your pod (or replication controller, or deployment config) you would want to specify, via a nodeselector, which zone you want the pod(s) to land in This stuff is scattered throughout the docs: https://docs.openshift.org/latest/admin_guide/manage_nodes.html#updating-labels-on-nodes https://docs.openshift.org/latest/dev_guide/deployments.html#assigning-pods-to-specific-nodes I hope this helps. > > > Content of /etc/ansible/hosts of my Ansible hosting VM: > > [masters] > > sv5305.selfdeploy.loc > > # host group for nodes, includes region info > > [nodes] > > sv5305.selfdeploy.loc openshift_node_labels="{'region': 'infra', 'zone': > 'default'}" openshift_schedulable=false > > sv5306.selfdeploy.loc openshift_node_labels="{'region': 'primary', 'zone': > 'east'}" > > sv5307.selfdeploy.loc openshift_node_labels="{'region': 'primary', 'zone': > 'west'}" > > > > Thank you in advance. > > > > Regards, > > > > Olga > > > > _______________________________________________ > dev mailing list > dev@lists.openshift.redhat.com > http://lists.openshift.redhat.com/openshiftmm/listinfo/dev > >
_______________________________________________ dev mailing list dev@lists.openshift.redhat.com http://lists.openshift.redhat.com/openshiftmm/listinfo/dev
