I got it.
From: Eric Robinson [mailto:eric.robin...@psmnv.com] Sent: Wednesday, August 23, 2017 6:51 PM To: Cluster Labs - All topics related to open-source clustering welcomed <users@clusterlabs.org> Subject: Re: [ClusterLabs] Is there a Trick to Making Corosync Work on Microsoft Azure? I figured out the cause. CMAN got installed by yum, and so none of my changes to corosync.conf had any effect, including the udpu directive. Now I just have to figure out how to enable unicast in cman. -- Eric Robinson From: Eric Robinson [mailto:eric.robin...@psmnv.com] Sent: Wednesday, August 23, 2017 3:16 PM To: Cluster Labs - All topics related to open-source clustering welcomed <users@clusterlabs.org<mailto:users@clusterlabs.org>> Subject: [ClusterLabs] Is there a Trick to Making Corosync Work on Microsoft Azure? I created two nodes on Micrsoft Azure, but I can't get them to join a cluster. Any thoughts? OS: RHEL 6.9 Corosync version: 1.4.7-5.el6.x86_64 Node names: ha001a (172.28.0.4/23), ha001b (172.28.0.5/23) The nodes are on the same subnet and can ping and ssh to each other just fine by either host name or IP address. I have configured corosync to use unicast. corosync-cfgtool looks fine... [root@ha001b corosync]# corosync-cfgtool -s Printing ring status. Local node ID 2 RING ID 0 id = 172.28.0.5 status = ring 0 active with no faults ...but corosync-objctl only shows the local node... [root@ha001b corosync]# corosync-objctl |grep join totem.join=60 runtime.totem.pg.mrp.srp.memb_join_tx=1 runtime.totem.pg.mrp.srp.memb_join_rx=1 runtime.totem.pg.mrp.srp.members.2.join_count=1 runtime.totem.pg.mrp.srp.members.2.status=joined ...pcs status shows... Cluster name: ha001 Stack: cman Current DC: ha001b (version 1.1.15-5.el6-e174ec8) - partition with quorum Last updated: Wed Aug 23 18:04:33 2017 Last change: Wed Aug 23 17:51:07 2017 by root via cibadmin on ha001b 2 nodes and 0 resources configured Online: [ ha001b ] OFFLINE: [ ha001a ] No resources Daemon Status: cman: active/disabled corosync: active/disabled pacemaker: active/disabled pcsd: active/disabled ...it shows the opposite on the other node... [root@ha001a ~]# corosync-objctl |grep join totem.join=60 runtime.totem.pg.mrp.srp.memb_join_tx=1 runtime.totem.pg.mrp.srp.memb_join_rx=1 runtime.totem.pg.mrp.srp.members.1.join_count=1 runtime.totem.pg.mrp.srp.members.1.status=joined [root@ha001a ~]# pcs status Cluster name: ha001 Stack: cman Current DC: ha001a (version 1.1.15-5.el6-e174ec8) - partition with quorum Last updated: Wed Aug 23 18:06:04 2017 Last change: Wed Aug 23 17:51:03 2017 by root via cibadmin on ha001a 2 nodes and 0 resources configured Online: [ ha001a ] OFFLINE: [ ha001b ] No resources Daemon Status: cman: active/disabled corosync: active/disabled pacemaker: active/disabled pcsd: active/disabled ...here is my corosync.conf... compatibility: whitetank totem { version: 2 secauth: off interface { member { memberaddr: 172.28.0.4 } member { memberaddr: 172.28.0.5 } ringnumber: 0 bindnetaddr: 172.28.0.0 mcastport: 5405 ttl: 1 } transport: udpu } logging { fileline: off to_logfile: yes to_syslog: yes logfile: /var/log/cluster/corosync.log debug: off timestamp: on logger_subsys { subsys: AMF debug: off } } I used tcpdump and I see a lot of traffic between them on port 2224, but nothing else. Is there an issue because the bindinetaddr is 172.28.0.0 but the members have a /23 mask? -- Eric Robinson
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