[solr] branch main updated: SOLR-15610: mention JsonTemplateLayout as a log4j option in ref-guide

[ho...@apache.org]

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hossman pushed a commit to branch main
in repository https://gitbox.apache.org/repos/asf/solr.git


The following commit(s) were added to refs/heads/main by this push:
     new f784a9e  SOLR-15610: mention JsonTemplateLayout as a log4j option in ref-guide
f784a9e is described below

commit f784a9e5738bcc24b68e295f06efadd836bf17d9
Author: Chris Hostetter <ho...@apache.org>
AuthorDate: Tue Sep 7 10:18:20 2021 -0700

    SOLR-15610: mention JsonTemplateLayout as a log4j option in ref-guide
---
 solr/solr-ref-guide/src/configuring-logging.adoc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/solr/solr-ref-guide/src/configuring-logging.adoc b/solr/solr-ref-guide/src/configuring-logging.adoc
index 2df8611..1acaa39 100644
--- a/solr/solr-ref-guide/src/configuring-logging.adoc
+++ b/solr/solr-ref-guide/src/configuring-logging.adoc
@@ -105,7 +105,9 @@ bin/solr start -f -q
 
 Solr uses http://logging.apache.org/log4j/2.x/[Log4J version {ivy-log4j-version}] for logging which is configured using `server/resources/log4j2.xml`.
 Take a moment to inspect the contents of the `log4j2.xml` file so that you are familiar with its structure.
+
 By default, Solr log messages will be written to `SOLR_LOGS_DIR/solr.log`.
+The format of the log messages can be changed by https://logging.apache.org/log4j/2.x/manual/layouts.html#PatternLayout[modifying the pattern] used in the `<PatternLayout/>`, or by changing the layout implementation -- e.g., a https://logging.apache.org/log4j/2.x/manual/json-template-layout.html[`<JsonTemplateLayout/>`] can be used to configure JSON formatted log files.
 
 When you're ready to deploy Solr in production, set the variable `SOLR_LOGS_DIR` to the location where you want Solr to write log files, such as `/var/solr/logs`.
 You may also want to tweak `log4j2.xml`.