Hey Guy's,
Wondering if there is a way to setup an HA NFSv4 server using HAPROXY
and keepalived or if anyone tried that doesn't result in the client
disconnecting with this error even when using the VIP through a basic
HAPROXY + keepalived config:
[root@ipaclient01 ~]# cd /n
-bash: cd: /n: Stale file handle
[root@ipaclient01 ~]#
is the result when using the VIP while failing the active node.
192.168.0.80 nfs-c01 (nfs01, nfs02) VIP
192.168.0.131 nfs01
192.168.0.119 nfs02
My google searches might be lacking as I don't get many results on this
topic.
Looking for an example I could bounce off of. My trial config is below:
[root@nfs01 haproxy]# cat haproxy.cfg|grep -v "#"
global
log 127.0.0.1 local2
chroot /var/lib/haproxy
pidfile /var/run/haproxy.pid
maxconn 4000
user haproxy
group haproxy
daemon
stats socket /var/lib/haproxy/stats
defaults
mode http
log global
option httplog
option dontlognull
option http-server-close
option forwardfor except 127.0.0.0/8
option redispatch
retries 3
timeout http-request 10s
timeout queue 1m
timeout connect 10s
timeout client 1m
timeout server 1m
timeout http-keep-alive 10s
timeout check 10s
maxconn 3000
frontend main *:80
acl url_static path_beg -i /static /images /javascript
/stylesheets
acl url_static path_end -i .jpg .gif .png .css .js
default_backend app
backend static
balance roundrobin
server static 127.0.0.1:4331 check
backend app
balance roundrobin
server nfs01.nix.dom.loc 192.168.0.131:80 check
server nfs02.nix.dom.loc 192.168.0.119:80 check
[root@nfs01 haproxy]#
[root@nfs01 haproxy]#
[root@nfs01 haproxy]#
[root@nfs01 haproxy]# cat /etc/keepalived/keepalived.conf
vrrp_script chk_haproxy {
script "killall -0 haproxy"
interval 2
weight 2
}
vrrp_instance VI_1 {
interface eth0
state MASTER
virtual_router_id 51
priority 101
virtual_ipaddress {
192.168.0.80
}
track_script {
chk_haproxy
}
}
[root@nfs01 haproxy]#
In case it's not possible, I'll attempt the pacemaker / corosync method.
--
Cheers,
Tom K.
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