[ClusterLabs] Two-Node Failover IP-Address and Gateway

[Andrei Borzenkov]

22.01.2018 20:54, brainheadz пишет:
> Hello,
> 
> I've got 2 public IP's and 2 Hosts.
> 
> Each IP is assigned to one host. The interfaces are not configured by the
> system, I am using pacemaker to do this.
> 
> fw-managed-01: 100.200.123.166/29
> fw-managed-02: 100.200.123.165/29
> 
> gateway: 100.200.123.161
> 
> I am trying to get some form of active/passive cluster. fw-managed-01 is
> the active node. If it fails, fw-managed-02 has to take over the VIP and
> change it's IPsrcaddr. This works so far. But if fw-managed-01 comes back
> online, the default Gateway isn't set again on the node fw-managed-02.
> 
> I'm quite new to this topic. The Cluster would work that way, but the
> passive Node can never reach the internet cause of the missing default
> gateway.
> 
> Can anyone explain to what I am missing or doing wrong here?
> 
> Output
> 
> # crm configure show
> node 1: fw-managed-01
> node 2: fw-managed-02
> primitive default_gw Route \
>         op monitor interval=10s \
>         params destination=default device=bad gateway=100.200.123.161
> primitive src_address IPsrcaddr \
>         op monitor interval=10s \
>         params ipaddress=100.200.123.166
> primitive vip_bad IPaddr2 \
>         op monitor interval=10s \
>         params nic=bad ip=100.200.123.166 cidr_netmask=29
> primitive vip_bad_2 IPaddr2 \
>         op monitor interval=10s \
>         params nic=bad ip=100.200.123.165 cidr_netmask=29
> primitive vip_managed IPaddr2 \
>         op monitor interval=10s \
>         params ip=172.30.40.254 cidr_netmask=24
> clone default_gw_clone default_gw \
>         meta clone-max=2 target-role=Started
> location cli-prefer-default_gw default_gw_clone role=Started inf:
> fw-managed-01

As far as I can tell this restricts clone to one node only. As it starts
with cli- this was done using something like "crm resource move" or
similar. Try

crm resource clear default_gw_clone

> location src_address_location src_address inf: fw-managed-01
> location vip_bad_2_location vip_bad_2 inf: fw-managed-02
> location vip_bad_location vip_bad inf: fw-managed-01
> order vip_before_default_gw inf: vip_bad:start src_address:start
> symmetrical=true
> location vip_managed_location vip_managed inf: fw-managed-01
> 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 \
>         last-lrm-refresh=1516362207 \
>         start-failure-is-fatal=false
> 
> # crm status
> Last updated: Mon Jan 22 18:47:12 2018          Last change: Fri Jan 19
> 17:04:12 2018 by root via cibadmin on fw-managed-01
> Stack: corosync
> Current DC: fw-managed-01 (version 1.1.14-70404b0) - partition with quorum
> 2 nodes and 6 resources configured
> 
> Online: [ fw-managed-01 fw-managed-02 ]
> 
> Full list of resources:
> 
>  vip_managed    (ocf::heartbeat:IPaddr2):       Started fw-managed-01
>  vip_bad        (ocf::heartbeat:IPaddr2):       Started fw-managed-01
>  Clone Set: default_gw_clone [default_gw]
>      default_gw (ocf::heartbeat:Route): FAILED fw-managed-02 (unmanaged)
>      Started: [ fw-managed-01 ]
>  src_address    (ocf::heartbeat:IPsrcaddr):     Started fw-managed-01
>  vip_bad_2      (ocf::heartbeat:IPaddr2):       Started fw-managed-02
> 
> Failed Actions:
> * default_gw_stop_0 on fw-managed-02 'not installed' (5): call=26,
> status=complete, exitreason='Gateway address 100.200.123.161 is
> unreachable.',
>     last-rc-change='Fri Jan 19 17:10:43 2018', queued=0ms, exec=31ms
> * src_address_monitor_0 on fw-managed-02 'unknown error' (1): call=18,
> status=complete, exitreason='[/usr/lib/heartbeat/findif -C] failed',
>     last-rc-change='Fri Jan 19 17:10:43 2018', queued=0ms, exec=75ms
> 
> 
> best regards,
> Tobias
> 
> 
> 
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