[ClusterLabs] Floating IP active in both nodes

Gabriel Buades gbuades at soffid.com
Fri Oct 26 12:36:37 EDT 2018


Thanks Dileep.

I've modified the setup to match your suggestion, but I've got the same
result.

Executing ifconfig -a, I can see node 1 has the floating IP added to the
ethernet device.
Executing ifconfig -a in node 2, the floating IP is missing, as expected.

But when node 2 tries to connect to the floating IP, it connects to itself.

Any other suggestion?



El vie., 26 oct. 2018 a las 15:27, Dileep V Nair (<dilenair at in.ibm.com>)
escribió:

> Hello Gabriel,
>
> I have a similar cluster configuration running fine. I am using the
> virtual IP to NFS mount a filesystem from Node 1 to node 2. The differences
> I could see from your configuration ..
>
>    > primitive site_one_ip ocf:heartbeat:IPaddr \
>    > params ip="192.168.2.200" cidr_netmask="255.255.252.0" nic="eth0" \
>    > op monitor interval="40s" timeout="20s"
>
>
>    I use ocf:heartbeat:IPaddr2
>    I have given only the IP parameter, no netmask and nic
>    I have a virtual hostname associated with the IP addr using /etc/hosts
>    and use the virtual hostname to connect.
>
>
>
> Thanks & Regards
>
> *Dileep Nair*
> Squad Lead - SAP Base
> IBM Services for Managed Applications
> +91 98450 22258 Mobile
> dilenair at in.ibm.com
>
> IBM *Services*
>
> [image: Inactive hide details for Gabriel Buades ---10/26/2018 06:34:46
> PM---Hello Andrei. I did not add lvs_support at first. I added]Gabriel
> Buades ---10/26/2018 06:34:46 PM---Hello Andrei. I did not add lvs_support
> at first. I added it later when noticed the
>
> From: Gabriel Buades <gbuades at soffid.com>
> To: users at clusterlabs.org
> Date: 10/26/2018 06:34 PM
> Subject: Re: [ClusterLabs] Floating IP active in both nodes
> Sent by: "Users" <users-bounces at clusterlabs.org>
> ------------------------------
>
>
>
> Hello Andrei.
>
>
> I did not add lvs_support at first. I added it later when noticed the
> problem to test if something changes, but I got same result
>
> Gabriel
>
>
> El vie., 26 oct. 2018 a las 11:47, Andrei Borzenkov (<
> *arvidjaar at gmail.com* <arvidjaar at gmail.com>>) escribió:
>
>    26.10.2018 11:14, Gabriel Buades пишет:
>    > Dear cluster labs team.
>    >
>    > I previously configured a two nodes cluster with replicated maria Db.
>    > To use one database as the active, and the other one as failover, I
>    > configured a cluster using heartbeat:
>    >
>    > root at logpmgid01v:~$ sudo crm configure show
>    > node $id="59bbdb76-be67-4be0-aedb-9e27d65f371e" logpmgid01v
>    > node $id="adbc5972-c491-4fc4-b87d-8170e1b2d4d0" logpmgid02v \
>    > attributes standby="off"
>    > primitive site_one_ip ocf:heartbeat:IPaddr \
>    > params ip="192.168.2.200" cidr_netmask="255.255.252.0" nic="eth0" \
>    > op monitor interval="40s" timeout="20s"
>    > location site_one_ip_pref site_one_ip 100: logpmgid01v
>    > property $id="cib-bootstrap-options" \
>    > dc-version="1.1.10-42f2063" \
>    > cluster-infrastructure="heartbeat" \
>    > stonith-enabled="false"
>    >
>    > Now, I've done a similar setup using corosync:
>    > root at 908soffid02:~# crm configure show
>    > node 1: 908soffid01
>    > node 2: 908soffid02
>    > primitive site_one_ip IPaddr \
>    > params ip=10.6.12.118 cidr_netmask=255.255.0.0 nic=ens160
>    lvs_support=true \
>
>    What is the reason you added lvs_support? Previous configuration did
>    not
>    have it.
>
>    > meta target-role=Started is-managed=true
>    > location cli-prefer-site_one_ip site_one_ip role=Started inf:
>    908soffid01
>    > location site_one_ip_pref site_one_ip 100: 908soffid01
>    > property cib-bootstrap-options: \
>    > have-watchdog=false \
>    > dc-version=1.1.14-70404b0 \
>    > cluster-infrastructure=corosync \
>    > cluster-name=debian \
>    > stonith-enabled=false \
>    > no-quorum-policy=ignore \
>    > maintenance-mode=false
>    >
>    > Apparently, it works fine, and floating IP address is active in
>    node1:
>    > root at 908soffid02:~# crm_mon -1
>    > Last updated: Fri Oct 26 10:06:12 2018 Last change: Fri Oct 26
>    10:02:53
>    > 2018 by root via cibadmin on 908soffid02
>    > Stack: corosync
>    > Current DC: 908soffid01 (version 1.1.14-70404b0) - partition with
>    quorum
>    > 2 nodes and 1 resource configured
>    >
>    > Online: [ 908soffid01 908soffid02 ]
>    >
>    >  site_one_ip (ocf::heartbeat:IPaddr): Started 908soffid01
>    >
>    > But when node2 tries to connect to the floating IP address, it gets
>    > connected to itself, despite the IP address is bound to the first
>    node:
>    > root at 908soffid02:~# ssh *root at 10.6.12.118* <root at 10.6.12.118>
>    hostname
>    > root at soffiddb's password:
>    > 908soffid02
>    >
>    > I'd want the second node connects to the actual floating IP address,
>    but I
>    > cannot see how to set it up. Any help is welcome.
>    >
>    > I am using pacemaker 1.1.14-2ubuntu1.4 and corosync 2.3.5-3ubuntu2.1
>    >
>    > Kind regards.
>    >
>    >
>    >
>    > Gabriel Buades
>    >
>    >
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