Hi Emir, thanks for the infos, it works for the Admin UI. But it fills the Admin UI pretty heavy with log messages.
I think it is a misunderstanding on my side because I was hoping to change the log level for solr.log with Admin UI. Would be cool if that would be possible, to change the log level for solr.log from the Admin UI. Imagine, a running system with problems, you can change log level and get more logging info into solr.log without restarting the system and overloading the Logging Admin UI: In my C and C++ programs I use SIGUSR1 and SIGUSR2 to change log levels during runtime. Regards Bernd Am 18.04.2018 um 17:18 schrieb Emir Arnautović: > Hi, > It is not exposed in the admin console (would be nice if it is!), but there > is a way to set threshold for admin UI logs. You can simply execute > following: > http://localhost:8983/solr/admin/info/logging?since=0&threshold=INFO > <http://localhost:8983/solr/admin/info/logging?since=0&threshold=INFO> and > INFO logs will start appearing in admin UI. > > HTH, > Emir > -- > Monitoring - Log Management - Alerting - Anomaly Detection > Solr & Elasticsearch Consulting Support Training - http://sematext.com/ > > > >> On 18 Apr 2018, at 16:30, Shawn Heisey <apa...@elyograg.org> wrote: >> >> On 4/18/2018 8:03 AM, Bernd Fehling wrote: >>> I just tried to change the log level with Solr Admin UI but it >>> does not change any logging on my running SolrCloud. >>> It just shows the changes in the Admin UI and the commands in the >>> request log, but no changes in the level of logging. >>> >>> Do I have to RELOAD the collection after changing log level? >>> >>> I tried all setting from ALL, TRACE, DEBUG, ... >>> >>> Also the Reference Guide 6.6 shows the Admin UI as I see it, but >>> the table below the image has levels FINEST, FINE, CONFIG, ... >>> https://lucene.apache.org/solr/guide/6_6/configuring-logging.html >>> This is confusing. >> >> What exact setting in the logging tab did you change, and what did you >> expect to happen that didn't happen? >> >> The logging events that show up in the admin UI will never include anything >> with a severity lower than WARN. Anything lower would be far too much >> information for the admin UI to handle. Changing the level shown in the >> admin UI is likely possible, but probably requires a code change. If >> changed, I think it would result in a UI page that's unusable because it >> contains far too many events. >> >> Assuming that log4j.properties hasn't been altered, you will find lower >> severity events in solr.log, a file on disk. The default logging level that >> Solr uses is INFO, but INFO logs never show up in the admin UI. >> >> Also, changes made to logging levels in the admin UI only last as long as >> Solr is running. When Solr is restarted, those changes are gone. Only >> changes made in log4j.properties will survive a restart. >> >> Thanks, >> Shawn >> > >
