We use New Relic for JVM, CPU, and disk monitoring. I tried the built-in metrics support in 6.4, but it just didn’t do what we want. We want rates and percentiles for each request handler. That gives us 95th percentile for textbooks suggest or for homework search results page, etc. The Solr metrics didn’t do that. The Jetty metrics didn’t do that.
We built a dedicated servlet filter that goes in front of the Solr webapp and reports metrics. It has some special hacks to handle some weird behavior in SolrJ. A request to the “/srp” handler is sent as “/select?qt=/srp”, so we normalize that. The metrics start with the cluster name, the hostname, and the collection. The rest is generated like this: URL: GET /solr/textbooks/select?q=foo&qt=/auto Metric: textbooks.GET./auto URL: GET /solr/textbooks/select?q=foo Metric: textbooks.GET./select URL: GET /solr/questions/auto Metric: questions.GET./auto So a full metric for the cluster “solr-cloud” and the host “search01" would look like “solr-cloud.search01.solr.textbooks.GET./auto.m1_rate”. We send all that to InfluxDB. We’ve configured a template so that each part of the metric name is mapped to a field, so we can write efficient queries in InfluxQL. Metrics are graphed in Grafana. We have dashboards that mix Cloudwatch (for the load balancer) and InfluxDB. I’m still working out the kinks in some of the more complicated queries, but the data is all there. I also want to expand the servlet filter to report HTTP response codes. wunder Walter Underwood wun...@wunderwood.org http://observer.wunderwood.org/ (my blog) > On Nov 2, 2017, at 9:30 AM, Petersen, Robert (Contr) > <robert.peters...@ftr.com> wrote: > > OK I'm probably going to open a can of worms here... lol > > > In the old old days I used PSI probe to monitor solr running on tomcat which > worked ok on a machine by machine basis. > > > Later I had a grafana dashboard on top of graphite monitoring which was > really nice looking but kind of complicated to set up. > > > Even later I successfully just dropped in a newrelic java agent which had > solr monitors and a dashboard right out of the box, but it costs money for > the full tamale. > > > For basic JVM health and Solr QPS and time percentiles, does anyone have any > favorites or other alternative suggestions? > > > Thanks in advance! > > Robi > > ________________________________ > > This communication is confidential. Frontier only sends and receives email on > the basis of the terms set out at http://www.frontier.com/email_disclaimer.
