Thank you Shawn.
My configuration is standalone mode.
We are going to use HAproxy and need a metric to determine when to switch
between two servers. The severs are kept "in sync" with each other by copying
the cores from one to another. This works for our use case which only indexes
new content on a schedule which we control.
Since sending this message I read that I can set up my own ping handler. There
appears to be none in the default configuration, but the core does respond to
the ping endpoint (/admin/ping) so there must be some implict request handler
configuration for that endpoint.
So, I guess my first question was is that response to /admin/ping telling me?
(what exactly does "status":"OK" mean)
"responseHeader": {
"zkConnected": null,
"status": 0,
"QTime": 0,
"params": {
"q": "{!lucene}*:*",
"distrib": "false",
"df": "_text_",
"rows": "10",
"echoParams": "all",
"indent": "true",
"rid": "-6"
}
},
"status": "OK"
}
If I setup my own ping handler and configure it to do a query. Does this
indicate any greater health that just sending a query and getting back a 200
response?
I am considering this example from the web:
<requestHandler name="/admin/ping" class="solr.PingRequestHandler">
<lst name="invariants">
<!-- specify the handler to delegate to -->
<str name="qt">/search</str>
<str name="q">some test query</str>
</lst>
<lst name="defaults">
<str name="echoParams">all</str>
<str name="df">article</str>
</lst>
<!-- relative paths are resolved against the data dir -->
<str name="healthcheckFile">server-enabled.txt</str>
</requestHandler>
What do you recommend for ping handler request?
Also, I am wondering about the healthcheckFile, I can't find any information
about what I can put in there other than enabling/disabling the ping endpoint.
Where is there more information on this fiile? Search the doc for
healthcheckFile returns No results found for query "healthcheckFile"
Thank you for your insights.
[cid:1b41aba7-9b3b-4ff1-88f0-9f1d6aaad553]
Matthew Castrigno
IHT Developer II
St. Luke’s Health System
• 208-859-4276
• [email protected]<mailto:[email protected]>
________________________________
From: Shawn Heisey <[email protected]>
Sent: Thursday, January 19, 2023 7:26 PM
To: [email protected] <[email protected]>
Subject: Re: What does "OK" mean in the status of the response of the ping
handler?
On 1/19/23 12: 32, Matthew Castrigno wrote: > Can I assume my index/core is not
corrupt to the extent that SOLR can > detect such condition? > Is this the best
heath indicator? > > https: //urldefense. com/v3/__https: //solr. apache.
org/guide/solr/latest/deployment-guide/ping.
html*ping-api-examples__;Iw!!FkC3_z_N!LmxefpYhLsy8Qy0bSEuC8-rndzi-PlTTbrLNROpVKY9K7DegR0ziz9BbaTFRHldvw3NGj8ZEPUNOkeg$
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On 1/19/23 12:32, Matthew Castrigno wrote:
> Can I assume my index/core is not corrupt to the extent that SOLR can
> detect such condition?
> Is this the best heath indicator?
>
> https://urldefense.com/v3/__https://solr.apache.org/guide/solr/latest/deployment-guide/ping.html*ping-api-examples__;Iw!!FkC3_z_N!LmxefpYhLsy8Qy0bSEuC8-rndzi-PlTTbrLNROpVKY9K7DegR0ziz9BbaTFRHldvw3NGj8ZEPUNOkeg$
>
> <https://urldefense.com/v3/__https://solr.apache.org/guide/solr/latest/deployment-guide/ping.html*ping-api-examples__;Iw!!FkC3_z_N!LmxefpYhLsy8Qy0bSEuC8-rndzi-PlTTbrLNROpVKY9K7DegR0ziz9BbaTFRHldvw3NGj8ZEPUNOkeg$>
How do you have your ping handler configured in solrconfig.xml? What is
the exacy request you are sending to it?
Is Solr in cloud mode or standalone?
Thanks,
Shawn
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