Hi Tibz, could you attach the /var/log/messages log file?
Which kind of algorithm are you using? What about the NAT type?
And finally, are you using IP persistence?
Thanks!
On Fri, Dec 19, 2014 at 11:07 AM, tibz <ti...@tibir.net> wrote:
>
> Extra info before someone asks:
>
> Load is very low:
>
> root@VMWZLB003:~# free -m
> total used free shared buffers cached
> Mem: 1010 455 554 0 268 70
> -/+ buffers/cache: 116 893
> Swap: 258 0 258
> root@VMWZLB003:~# uptime
> 11:06:40 up 60 days, 16:47, 2 users, load average: 0.01, 0.01, 0.00
>
> VMtools are installed and running.
>
> Network card used in vmware are E1000
>
> Thanks
> tibz
>
> On 19/12/2014 11:01, tibz wrote:
> > Hello,
> >
> > I've a very strange problem with my ZLB cluster running v3.03 in VMWare.
> > This problem affect only L4 farms.
> >
> > Eth0 from where client are coming is 192.168.135.X
> > Eth1 where the backend servers are is 192.168.118.X
> >
> > At the beginning, when from a client I ping 192.168.135.X ou
> > 192.168.118.X it works with low latency ~1ms (LAN)
> > However after some times (cluster is up for 60 days), there is an extra
> > lantency apparently added by ZLB
> > I've heard issue appeared about 15 days ago, so at uptime around 45 days.
> >
> > ## Ping from client
> > ZLB IP client side: Reply from 192.168.135.231: bytes=32 time<1ms TTL=63
> > ZLB IP backend side: Reply from 192.168.118.254: bytes=32 time<1ms
> TTL=63
> > ZLB L4 VIP: Reply from 192.168.135.4: bytes=32 time=72ms TTL=126
> > Backend IP: Reply from 192.168.118.1: bytes=32 time=77ms TTL=126
> >
> > ## Ping from ZLB itself
> > Backend server: 64 bytes from 192.168.118.1: icmp_req=1 ttl=128
> time=74.6 ms
> > A client IP: 64 bytes from 192.168.162.5: icmp_req=1 ttl=127 time=0.367
> ms
> >
> > ## Ping from Backend
> > To ZLB: Reply from 192.168.118.254: bytes=32 time=72ms TTL=63
> > To another backend: Reply from 192.168.118.2: bytes=32 time<1ms TTL=63
> >
> > So it seems the latency is added somehow between Eth1 and the Backend.
> > The strange thing is that this was running OK for several weeks, with no
> > extra latency, it just happened "all of a sudden".
> >
> > i've tried to vmotion the ZLB to another host and datastore, but it does
> > not help.
> > The other cluster member does NOT have this problem.
> > I've cloned the problematic ZLB, but the clone does NOT have the
> > problem, eventhough it's on the same host and datastore. (that would be
> > normal if the problem happens only after a while)
> >
> > Anyone has an idea what could be causing this?
> >
> > Thanks
> > tibz
> >
> >
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