Forum Discussion
jan_de_wachter_
Nimbostratus
NimbostratusLTM show sys ha-mirror command
Hi,
We are facing persistence mirroring problems (persistency is not mirrored) and opened a case with F5.
I had to do following command: tmsh show sys ha-mirror
Giving following result:
--...
Greetings, This seems a newer and not very well documented command, so I took a few minutes to see how this works. I don't think mirroring will work for you based on what you've shown and my testing. Here are the results:
I initially had the "closed" status as well. I set up mirroring and it did not work. I then realized there were no mirroring addresses defined in my CM config. To check:
tmsh list cm device mirror-ip cm device lc.one.test.net { mirror-ip 10.12.23.120 } cm device lc.two.testnet { mirror-ip 10.12.23.121 }Then the status changed to the following:
---------------------------------------------------------------------------------------------------------------- Sys::HA Mirror Status ---------------------------------------------------------------------------------------------------------------- Traffic Group TMM Primary Secondary Aborts Overflows Errors Buffered L4 Mirror L7 Mirror L7 Failed ---------------------------------------------------------------------------------------------------------------- traffic-group-1 [0.0] delay closed 0 0 7 0 0 0 0 traffic-group-1 [0.1] delay closed 0 0 7 0 0 0 0Still no mirroring occurring. I then realized that each LTM had a different number of CPUs. So I corrected that and finally mirroring began to work:
show sys connection type mirror Sys::Connections 10.12.23.139:55523 10.12.23.137:22 10.12.23.121:55523 10.12.23.27:22 tcp 1 (tmm: 1) none Total records returned: 1------------------------------------------------------------------------------------------------------------------ Sys::HA Mirror Status ------------------------------------------------------------------------------------------------------------------ Traffic Group TMM Primary Secondary Aborts Overflows Errors Buffered L4 Mirror L7 Mirror L7 Failed ------------------------------------------------------------------------------------------------------------------ traffic-group-1 [0.0] connected closed 0 0 2 0 0 0 0 traffic-group-1 [0.1] connected closed 0 0 2 0 0 0 0 traffic-group-1 [0.2] connected closed 0 0 2 0 0 0 0 traffic-group-1 [0.3] connected closed 0 0 2 0 0 0 0
Greetings, This seems a newer and not very well documented command, so I took a few minutes to see how this works. I don't think mirroring will work for you based on what you've shown and my testing. Here are the results:
I initially had the "closed" status as well. I set up mirroring and it did not work. I then realized there were no mirroring addresses defined in my CM config. To check:
tmsh list cm device mirror-ip
cm device lc.one.test.net {
mirror-ip 10.12.23.120
}
cm device lc.two.testnet {
mirror-ip 10.12.23.121
}
Then the status changed to the following:
----------------------------------------------------------------------------------------------------------------
Sys::HA Mirror Status
----------------------------------------------------------------------------------------------------------------
Traffic Group TMM Primary Secondary Aborts Overflows Errors Buffered L4 Mirror L7 Mirror L7 Failed
----------------------------------------------------------------------------------------------------------------
traffic-group-1 [0.0] delay closed 0 0 7 0 0 0 0
traffic-group-1 [0.1] delay closed 0 0 7 0 0 0 0
Still no mirroring occurring. I then realized that each LTM had a different number of CPUs. So I corrected that and finally mirroring began to work:
show sys connection type mirror
Sys::Connections
10.12.23.139:55523 10.12.23.137:22 10.12.23.121:55523 10.12.23.27:22 tcp 1 (tmm: 1) none
Total records returned: 1
------------------------------------------------------------------------------------------------------------------
Sys::HA Mirror Status
------------------------------------------------------------------------------------------------------------------
Traffic Group TMM Primary Secondary Aborts Overflows Errors Buffered L4 Mirror L7 Mirror L7 Failed
------------------------------------------------------------------------------------------------------------------
traffic-group-1 [0.0] connected closed 0 0 2 0 0 0 0
traffic-group-1 [0.1] connected closed 0 0 2 0 0 0 0
traffic-group-1 [0.2] connected closed 0 0 2 0 0 0 0
traffic-group-1 [0.3] connected closed 0 0 2 0 0 0 0
jan_de_wachter_Nimbostratus
NimbostratusHi all,
With the help of a f5 network engineer we found the origin of our mirroring problem. We have two viprion F5s with each two baldes, working with VCMP (host and guests).
The problem was caused by the mirror definition (Device management - Device - select self ip - Device Connectivity - Network mirroring).
We replaced Network Mirroring from "within cluster" to "between clusters" (mandatory for VIPRION connection/persistence mirroring) and mirroring connection came up.
Show sys HA-mirror:
------------------------------------------------------------------------------------------------------------------
Sys::HA Mirror Status
------------------------------------------------------------------------------------------------------------------
Traffic Group TMM Primary Secondary Aborts Overflows Errors Buffered L4 Mirror L7 Mirror L7 Failed
------------------------------------------------------------------------------------------------------------------
traffic-group-1 [0.0] connected closed 0 0 0 0 0 0 0
The GUI of our standby system showed the persistency records (with time 0), and after a failover (force to standy) the persistent sessions continued without problems.
Thanks all for the great help!
Jan