Server fails to start (nginx start failed)

[mack3457]

Hi!

About 10 hours ago, our web server stopped working. When restarting it, we see an error message:

nginx start failed. reason: No available memcached servers could be contacted

Funnily, we disabled memcached completely, so there shouldn't be any reason to look for memcached. I then activated memcached and told it to bind to localhost only. Testing with telnet was successful, but the error message didn't change.

I'm a little confused on what is going on. In trace.log I found a possible hint, when the failure started:

21:26:45.459:qtp1286783232-100491:http://localhost:8080/service/soap/AuthRequest REQUEST 127.0.0.1 POST null; zclient 8.8.9_GA_3006
21:26:45.467:qtp1286783232-100491:http://localhost:8080/service/soap/AuthRequest RESPONSE 200 text/xml;charset=utf-8
21:26:45.473:qtp1286783232-100535:http://localhost:8080/service/soap/GetInfoRequest REQUEST 127.0.0.1 POST null; zclient 8.8.9_GA_3006
21:26:45.476:qtp1286783232-100535:http://localhost:8080/service/soap/GetInfoRequest RESPONSE 500 text/xml;charset=utf-8

and repeating the last two REQUEST/RESPONS pairs multiple times.

What can I do to resolve the problem?

Thomas Mack

PS: This is version Release 8.8.9_GA_2055.RHEL7_64_20180703080917 RHEL7_64 FOSS edition, Patch 8.8.9_P1.

[mack3457]

So, I switch off proxy and remapped the ports - this is the "quick" solution.

Still don't know, why proxy doesn't like to start.

(And why proxy looks for memchached, when memcached isn't enabled. And why it cannot connect to memcached, even when it is installed?)

Maybe a reinstallation might clear this up...?


Thanks,
Thomas

[phoenix]

Proxy & memcached have both been required since ZCS 8.8.7, I'd suggest you make sure they're both installed and configured correctly: https://wiki.zimbra.com/wiki/Enabling_Z ... _memcached

[mack3457]

Yes, it looks like this. Still had accesses to memcached, even though it wasn't enabled.

So, finally re-ran install.sh and now it seems to work properly.

Thanks for the hint - didn't notice the necessity for it since 8.8.7.

Thomas

[phoenix]

These things are often easy to miss in the Release Notes. I'm glad you've fixed it and it's working.

[msisami]

zmmemcachedctl start
Starting memcached...memcached is already running.

zmprov ms "mail.domain.com" +zimbraServiceEnabled memcached


zmcontrol restart

zmcontrol status