Take a look at the metrics available starting with 6.4 (https://lucene.apache.org/solr/guide/7_4/performance-statistics-reference.html).
Or just hit: http://blahblahblah/solr/admin/metrics to see them all. WARNING: be prepared to spend an hour looking through the list, there are a _log_ of them..... Erick On Mon, Sep 17, 2018 at 2:45 PM Christopher Schultz <ch...@christopherschultz.net> wrote: > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA256 > > Shawn, > > On 9/17/18 17:21, Shawn Heisey wrote: > > On 9/17/2018 3:01 PM, Christopher Schultz wrote: > >> The basic questions I'd like to have answered on a regular basis > >> are: > >> > >> 1. Is the JVM up (this can be done with a ping, of course) 2. Is > >> the heap healthy? Any OOMEs? 3. Will a sample query return in a > >> reasonable amount of time? > >> > >> 1 and 3 are quite easily done using e.g. /solr/[c]/ping, but #2 > >> is trickier. I can do this via JMX, but I'd prefer to avoid > >> spinning-up a whole JVM just to probe Solr for one or two > >> values. > > > > If your Solr version is at least 5.5.1 and you're NOT on Windows, > > number 2 can also be verified by a ping request. > > Interesting. I did mention 7.4.0 but not my OS. I'm on Debian Linux, > and I'm running Solr using the Solr-supplied init.d scripts (via solr > install). > > > With a new enough version on the correct operating system, Solr is > > started with an option that will kill the process should an > > OutOfMemoryError occur. When that happens, it won't be able to > > answer a ping request. > > > > Here's the issue that fixes a problem with the startup on 5.5.1 or > > later: > > > > https://issues.apache.org/jira/browse/SOLR-8145 > > Given that, I'll go ahead and set things up to do a simple > /solr/[c]/ping request for health-monitoring. > > Thanks, > - -chris > -----BEGIN PGP SIGNATURE----- > Comment: Using GnuPG with Thunderbird - https://www.enigmail.net/ > > iQIzBAEBCAAdFiEEMmKgYcQvxMe7tcJcHPApP6U8pFgFAlugIGMACgkQHPApP6U8 > pFi8YQ//dwJdJG1VtqUgbFI437HzUMhuI+9SBOf0nateQFqQbfoqkLhC/z3dwjvj > qqhqcT68D2x1bYYk/5we7KD9I6PZ50mL5sZlU34NYC9AFMB5QEdTtWljlqGM/Xoe > elvsKYJVmZn9kvc6iwqyLU71clcRX27NhEDAFrPrCmhgZKRTpNqtgYyEOsIJZ/CL > muMml4hV5eNIc+VOle+jcqwTrWY4xtaf6Fmo6NLCsUvC2CB5/QI7JoYzvnLvVVMD > IVn6AnsLd/wIVSJiPyVYDA58/pVj1w6Jb36L8eg0fxfoO+eAkObUU3s71QglZlIx > m9Qkd8lGQ7qNxUDOMSgPNW/j7tZcxn39FRsM9b3z7kWJGriBcz/S5jX9QSNcArmh > pyHIf48y8wOgl/wQsmsGgXsHtdlwJu+84B3sFGjUKQU/2JPO88XJEo+pKluaMFDO > E2yZGdTvfRbXLTqe/XCGN89yKyIOKJAX2ZXP9EU0PmFSFbeod6oqbT/MKO3+DzCm > PpkUV10vlmqnsJ+5edj89hmM5gJOKcwQTDZ2E/U5tvs4DJHZTG578hnZp1coDU/c > m7M80m5SyE/5ycYBODp6oyJNAkEf6suJ+BIyQkr61t9/L7yvwSm80nFheFpVMIMX > N/lRL9ar4U/lLDL00aVhDecyNSFOvDjSUBlIlQ4hUb80bZiz3xY= > =lOp1 > -----END PGP SIGNATURE-----
