Hi Emilio
This has just happened again. It has followed immediately after me
changing the Sticky Client options for another farm, not sure if this is
related..?
All servers are showing GREEN in the GUI summary page, Client Sessions
173 Active, and Active connections 550 max, 0 used, 69 last (but non
showing).
The interface is also GREEN, edit, no change then UP - made no
difference.
I can PING the virtual interface of the Farm
I can PING from the ZLB CLI to all my real servers.
I have tried CHECK_HTTP and the response is 'OK'
I can also hit the 'real' servers directly from my laptop, they respond
OK.
Marco suggested MTU 500 - not sure what that means, I have asked him
directly.
Tried: PING 192.168.1.20 -s 500
Here is the ZLB Log for the last 20 minutes, from just before it went
off:-
Mon Feb 20 13:24:39 2012 - * - 192.168.10.137 - admin - running
'/usr/local/zenloadbalancer/app/pen/bin/penctl 127.0.0.1:15381
clients_max'
Mon Feb 20 13:24:40 2012 - * - 192.168.10.137 - admin - running
'/usr/local/zenloadbalancer/app/pen/bin/penctl 127.0.0.1:15381
clients_max'
Mon Feb 20 13:24:40 2012 - * - 192.168.10.137 - admin - running
'/usr/local/zenloadbalancer/app/pen/bin/penctl 127.0.0.1:15381
clients_max'
Mon Feb 20 13:24:41 2012 - * - 192.168.10.137 - admin - running
'/usr/local/zenloadbalancer/app/pen/bin/penctl 127.0.0.1:15381
clients_max'
Mon Feb 20 13:24:42 2012 - * - 192.168.10.137 - admin - running
'/usr/local/zenloadbalancer/app/pen/bin/penctl 127.0.0.1:15381
clients_max'
Mon Feb 20 13:24:43 2012 - * - 192.168.10.137 - admin - running
'/usr/local/zenloadbalancer/app/pen/bin/penctl 127.0.0.1:15381
clients_max'
Mon Feb 20 13:24:45 2012 - * - 192.168.10.137 - admin - running
'/usr/local/zenloadbalancer/app/pen/bin/penctl 127.0.0.1:15381
clients_max'
Mon Feb 20 13:24:46 2012 - * - 192.168.10.137 - admin - running
'/usr/local/zenloadbalancer/app/pen/bin/penctl 127.0.0.1:15381
clients_max'
Mon Feb 20 13:24:47 2012 - * - 192.168.10.137 - admin - running
'/usr/local/zenloadbalancer/app/pen/bin/penctl 127.0.0.1:15381
clients_max'
Mon Feb 20 13:24:48 2012 - * - 192.168.10.137 - admin - running
'/usr/local/zenloadbalancer/app/pen/bin/penctl 127.0.0.1:15381
clients_max'
Mon Feb 20 13:24:59 2012 - * - 192.168.10.137 - admin - running
'/usr/local/zenloadbalancer/app/pen/bin/penctl 127.0.0.1:15381
clients_max'
Mon Feb 20 13:25:01 2012 - * - 192.168.10.137 - admin - running
'/usr/local/zenloadbalancer/app/pen/bin/penctl 127.0.0.1:15381
clients_max'
Mon Feb 20 13:25:07 2012 - * - 192.168.10.137 - admin - loading the
TIM-Clustered Farm data
Mon Feb 20 13:25:07 2012 - * - 192.168.10.137 - admin - running
'/usr/local/zenloadbalancer/app/pen/bin/penctl 127.0.0.1:15381
clients_max'
Mon Feb 20 13:25:07 2012 - * - 192.168.10.137 - admin - running
'/usr/local/zenloadbalancer/app/pen/bin/penctl 127.0.0.1:15381 timeout'
for TIM-Clustered farm tcp
Mon Feb 20 13:25:07 2012 - * - 192.168.10.137 - admin - running
'/usr/local/zenloadbalancer/app/pen/bin/penctl 127.0.0.1:15381 servers'
Mon Feb 20 13:25:07 2012 - * - 192.168.10.137 - admin - running
'/usr/local/zenloadbalancer/app/pen/bin/penctl 127.0.0.1:15381
blacklist' for TIM-Clustered farm
Mon Feb 20 13:25:07 2012 - * - 192.168.10.137 - admin - running
'/usr/local/zenloadbalancer/app/pen/bin/penctl 127.0.0.1:15381 servers'
Mon Feb 20 13:26:46 2012 - * - 192.168.10.137 - admin - loading the
TIM-Clustered Farm data
Mon Feb 20 13:26:46 2012 - * - 192.168.10.137 - admin - setting
'MaxClientTime 500 3600' for TIM-Clustered farm tcp
Mon Feb 20 13:26:46 2012 - * - 192.168.10.137 - admin - running 'Stop
write true' for TIM-Clustered farm tcp
Mon Feb 20 13:26:46 2012 - * - 192.168.10.137 - admin - running 'kill
15, 30556
'
Mon Feb 20 13:26:46 2012 - * - 192.168.10.137 - admin - running 'Start
write true' for TIM-Clustered farm tcp
Mon Feb 20 13:26:46 2012 - * - 192.168.10.137 - admin - running
/usr/local/zenloadbalancer/app/pen/bin/pen -S 2 -c 500 -x 500 -F
'/usr/local/zenloadbalancer/config/TIM-Clustered_pen.cfg' -C
127.0.0.1:15381 192.168.1.49:80
Mon Feb 20 13:26:46 2012 - * - 192.168.10.137 - admin - The max number
of clients has been modified, the farm TIM-Clustered has been restarted
Mon Feb 20 13:26:46 2012 - * - 192.168.10.137 - admin - running
'/usr/local/zenloadbalancer/app/pen/bin/penctl 127.0.0.1:15381
clients_max'
Mon Feb 20 13:26:46 2012 - * - 192.168.10.137 - admin - running
'/usr/local/zenloadbalancer/app/pen/bin/penctl 127.0.0.1:15381 timeout'
for TIM-Clustered farm tcp
Mon Feb 20 13:26:46 2012 - * - 192.168.10.137 - admin - running
'/usr/local/zenloadbalancer/app/pen/bin/penctl 127.0.0.1:15381 servers'
Mon Feb 20 13:26:46 2012 - * - 192.168.10.137 - admin - running
'/usr/local/zenloadbalancer/app/pen/bin/penctl 127.0.0.1:15381
blacklist' for TIM-Clustered farm
Mon Feb 20 13:26:46 2012 - * - 192.168.10.137 - admin - running
'/usr/local/zenloadbalancer/app/pen/bin/penctl 127.0.0.1:15381 servers'
Mon Feb 20 13:27:19 2012 - * - 192.168.10.137 - admin - running
'/usr/local/zenloadbalancer/app/pen/bin/penctl 127.0.0.1:15185
clients_max'
Mon Feb 20 13:27:21 2012 - * - 192.168.10.137 - admin - running
'/usr/local/zenloadbalancer/app/pen/bin/penctl 127.0.0.1:15185
clients_max'
Mon Feb 20 13:27:31 2012 - * - 192.168.10.137 - admin - running
'/usr/local/zenloadbalancer/app/pen/bin/penctl 127.0.0.1:15185
clients_max'
Mon Feb 20 13:28:06 2012 - * - 192.168.10.137 - admin - running
'/usr/local/zenloadbalancer/app/pen/bin/penctl 127.0.0.1:15185
clients_max'
Mon Feb 20 13:28:10 2012 - * - 192.168.10.137 - admin - running
'/usr/local/zenloadbalancer/app/pen/bin/penctl 127.0.0.1:15185
clients_max'
Mon Feb 20 13:41:08 2012 - * - 192.168.10.137 - admin - running
'/sbin/ip rule del from 192.168.1.46 table table_eth0'
Mon Feb 20 13:41:08 2012 - * - 192.168.10.137 - admin - running
'/sbin/ifconfig eth0:PNagent 192.168.1.46 netmask 255.255.255.0'
Mon Feb 20 13:41:08 2012 - * - 192.168.10.137 - admin - running
'/sbin/ip link set eth0:PNagent up'
Mon Feb 20 13:41:08 2012 - * - 192.168.10.137 - admin - Network
interface eth0:PNagent is now UP
Mon Feb 20 13:41:08 2012 - * - 192.168.10.137 - admin - running
'/sbin/ip rule del from 192.168.1.46 table table_eth0'
Mon Feb 20 13:41:08 2012 - * - 192.168.10.137 - admin - running
'/sbin/ip rule add from 192.168.1.46 table table_eth0'
Mon Feb 20 13:41:08 2012 - * - 192.168.10.137 - admin - All is ok,
saved eth0:PNagent interface config file
Any more thoughts?
Nick
>>> "Emilio Campos" <[email protected]> 20/02/2012 10:48
>>>
Nick, for the next time, before restarting It could be very useful to
know the number of active connections , the max value and used value in
manage farm section of farm is failing:
Table with header "Active connections 257 max, 0 used, 0 last "
Other question, is there a firewall between your vip zlb and your
backends? or are they in the same subnet?
Regards
2012/2/20 Nick Furnell <[email protected]>
Hi Laura
This was a TCP farm on port 80 (today) and SMTP port (25) on Friday.
When the SMTP server was down, I tried Telnet from my laptop direct to
the real servers (ok) and via ZLB address (nothing). I didn't try
directly from the ZLB CLI
Thanks
Nick
>>> "Laura Garcia" <[email protected]> 20/02/2012 08:44 >>>
Has been detected in tcp or http farms?
El 20/02/2012 9:12, "Nick Furnell"
<[email protected]> escribió:
Hi Guys
I have found this situation twice now, once on Friday and now again
Monday morning. The Zen servers are fine, but they do not process any
traffic to the 'real' servers?
Real servers are ok - tested them directly
Both ZLB servers are ok - logged in to both of them.
Communication between ZLB serves looked ok.
Decided to push the 'Test Failover button'.... it fixed it on BOTH
occasions.
Any thoughts as to why ZLB is stopping processing?
Nick
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