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Re: questions about externalIP usage



Hi Erik,

I configured "externalIPs" with cluster setup using flannel but it didn't work.

Then I reinstalled cluster with openvswitch. This time "externalIP" worked.


Is openvwitch suggested network plugin for openshift origin?

I deployed same application in k8s cluster and it worked.


Thanks,

Jared, (韦煜)
Software developer
Interested in open source software, big data, Linux


From: Erik Jacobs <ejacobs redhat com>
Sent: Wednesday, August 16, 2017 8:16:07 AM
To: Yu Wei
Cc: users lists openshift redhat com; dev lists openshift redhat com
Subject: Re: questions about externalIP usage
 
Hi Jared,

Did you previously configure the cluster for externalip usage?

https://docs.openshift.org/latest/admin_guide/tcp_ingress_external_ports.html

---

ERIK JACOBS

PRINCIPAL TECHNICAL MARKETING MANAGER, OPENSHIFT

Red Hat Inc

ejacobs redhat com    M: 646.462.3745     @: erikonopen


On Thu, Aug 10, 2017 at 4:12 AM, Yu Wei <yu2003w hotmail com> wrote:

Hi guys,

I deployed redis with replication controller successfully on openshift origin cluster.

Then I tried to create service for external clients to connect.

However, it seemed that it didn't work.

How could I debug similar problem? Is there any guidance about using externalIP in openshift?


The detailed information is as below,

[root host-10-1-236-92 gluster]# oc get svc
NAME                CLUSTER-IP     EXTERNAL-IP                           PORT(S)              AGE
glusterfs-cluster   172.30.6.143   <none>                                1/TCP                1d
redis-svc           172.30.51.20   10.1.236.92,10.1.236.93,10.1.241.55   26379/TCP,6379/TCP   24m
[root host-10-1-236-92 gluster]# oc describe svc redis-svc
Name:            redis-svc
Namespace:        openshiift-servicebroker
Labels:            <none>
Selector:        sb-2017-redis-master=master
Type:            ClusterIP
IP:            172.30.51.20
Port:            redis-sen    26379/TCP
Endpoints:        172.30.41.5:26379
Port:            redis-master    6379/TCP
Endpoints:        172.30.41.5:6379
Session Affinity:    None
No events.

[root host-10-1-236-92 gluster]# cat redis-master-svc.yaml
---
kind: Service
apiVersion: v1
metadata:
  name: redis-svc
spec:
    selector:
      sb-2017-redis-master: master
    ports:
      - name: redis-sen
        protocol: TCP
        port: 26379
        targetPort: 26379
      - name: redis-master
        protocol: TCP
        port: 6379
        targetPort: 6379
    externalIPs:
      -  10.1.236.92
      -  10.1.236.93
      -  10.1.241.55



Thanks,

Jared, (韦煜)
Software developer
Interested in open source software, big data, Linux


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