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Upgrade from v11.6.0 HF4 to v11.6.0 HF6 breaks some monitors
- Nov 16, 2015
I got bit by this last night, which resulted in extended downtime until we found the cause. On our LTM-VE (standalone), it only doubled the backslashes, which allowed it to work on some pools still. Our 2000s HA pair got triple backslashes, though, and marked everything down as a result. Not good.
https://support.f5.com/kb/en-us/products/big-ip_ltm/releasenotes/product/relnote-ltm-11-5-1.htmlrn_ki
ID 453256 seems to point to an issues with double quotes are backslashes in monitors. Seems pretty hard to avoid getting hit by it (I'd probably over/under escape).
https://support.f5.com/kb/en-us/products/big-ip_ltm/releasenotes/product/relnote-ltm-11-6-0.htmlrn_ki
Different ID, 291584, points to another backslash issue where the workaround is to delete the extras.
This upgrade issue is documented in sol91296817: Extra escape characters may be appended to monitor send/receive strings after upgrading
https://support.f5.com/kb/en-us/solutions/public/k/91/sol91296817.html?sr=50677863
- Also affects 11.5.3, 11.5.3 HF1, 11.5.3 HF2
- Peter_BaumannApr 13, 2016CirrostratusHi jbancroft, Thanks, I found the same article not long ago. And I have some news. The issue should be fixed in v11.6.1 which should be released soon, maybe this week. So happy upgrading and testing when it will be released... :-)
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