Solr Log Overview

Log Description

Log path: The default storage path of Solr log files is /var/log/Bigdata/solr/Role name.

SolrServerAdmin:
- /var/log/Bigdata/solr/SolrServerAdmin (run logs)
- /var/log/Bigdata/solr/SolrHAServer (run logs)
- /var/log/Bigdata/audit/solr/SolrServerAdmin (audit logs)
SolrServer1:
- /var/log/Bigdata/solr/SolrServer1 (run logs)
- /var/log/Bigdata/audit/solr/SolrServer1 (audit logs)
SolrServer2:
- /var/log/Bigdata/solr/SolrServer2 (run logs)
- /var/log/Bigdata/audit/solr/SolrServer2 (audit logs)
SolrServer3:
- /var/log/Bigdata/solr/SolrServer3 (run logs)
- /var/log/Bigdata/audit/solr/SolrServer3 (audit logs)
SolrServer4:
- /var/log/Bigdata/solr/SolrServer4 (run logs)
- /var/log/Bigdata/audit/solr/SolrServer4 (audit logs)
SolrServer5:
- /var/log/Bigdata/solr/SolrServer5 (run logs)
- /var/log/Bigdata/audit/solr/SolrServer5 (audit logs)
HbaseIndexer:
- /var/log/Bigdata/solr/HBaseIndexer (run logs)

Log archive rule: The automatic Solr log compression function is enabled. By default, when the size of logs exceeds 5 MB, logs are automatically compressed into a log file named in the following format: <Original log file name>-<yyyy-mm-dd_hh-mm-ss>.[ID].log.zip. A maximum of 20 latest compressed files are reserved. The number of compressed files can be configured on the Manager portal.

**Table 1** Solr log list
Log Type	Name	Description
Run logs	solr-<hostname>.log	Solr system log file, which records most logs generated when the Solr system is running
	SolrServer1~5/solr-process-check.log SolrServerAdmin/solr-process-check.log	Solr process check log file
	solr-service-check.log	Solr service check log file
	SolrServer1~5/solr-startup.log SolrServeAdmin/solr-startup.log	Solr startup log file
	SolrServer1~5/solr-stop.log SolrServerAdmin/solr-stop.log	Solr stop log file
	SolrServer1~5/solr-<date>_gc.log.<index> SolrServerAdmin/solr-<date>_gc.log.<index>	GC log file of the SolrServer instance
	solrhaserverDetail.log	Log file that records the startup and stop status check of Solr HA
	SolrServer1~5/postinstallDetail.log SolrServerAdmin/postinstallDetail.log	Work log file generated after the Solr service installation and before the Solr service startup
	SolrServer1~5/prestartDetail.log SolrServerAdmin~5/prestartDetail.log	Log file that records the preparation before the startup of the Solr service
	SolrServer1~5/solr-catalina-<hostname>.log SolrServerAdmin/solr-catalina-<hostname>.log	Catalina engine startup log file
	SolrServer1~5/solr-catalina-<hostname>.out SolrServerAdmin/solr-catalina-<hostname>.out	Log that records the environment information required for Catalina engine startup
	SolrServer1~5/solr-threadDump-<date>.log SolrServerAdmin/solr-threadDump-<date>.log	Solr instance stack log
	ha.log	HA run log
	rs-floatip.log	Log file that records the floating IP address configuration
	rs-sendAlarm.log	Log file that records HA alarms
	ha_monitor.log	HA monitoring log file
	hbaseindexer.out	Log that records the running environment information of the HBaseIndexer service
	hbaseindexer-service-check.log	HBaseIndexer service check log
	HBaseIndexer-threadDump-<date>.log	HBaseIndexer stack log
	hbaseindexer-omm-<hostname>.log	HBaseIndexer system log file that records most of the logs generated when HBaseIndexer is running
	hbaseindexer-omm-<date>-gc.log.<index>	GC log file of the HBaseIndexers instance
	HBaseIndexer/postinstallDetail.log	Work log file generated after the HBaseIndexer service installation and before the HBaseIndexer service startup
	HBaseIndexer/prestartDetail.log	Log file that records the preparation before the startup of the HBaseIndexer service
	HBaseIndexer/startDetail.log	HBaseIndexer startup log file
	HBaseIndexer/stopDetail.log	HBaseIndexer stop log file
Audit log	solr-audit-<hostname>.log	Audit log file that records the Solr operations (such as creating, deleting, modifying, and querying files)

Log levels

Table 2 describes the log levels provided by Solr.

The priorities of log levels are FATAL, ERROR, WARN, INFO, and DEBUG in descending order. Logs whose levels are higher than or equal to the set level are printed. The number of printed logs decreases as the configured log level increases.

**Table 2** Log levels
Level	Description
FATAL	Logs of this level record all log information about the current event processing.
ERROR	Error information about the current event processing
WARN	Exception information about the current event processing
INFO	Logs of this level record normal running status information about the system and events.
DEBUG	Logs of this level record the system information and system debugging information.

To modify log levels, perform the following operations:

Log in to Manager.
Choose Cluster > Name of the desired cluster > Service > Solr > Configuration.
Select All Configurations.
On the menu bar on the left, select the log menu of the target role.
Select a desired log level.
Click Save. In the displayed dialog box, click OK to make the configuration take effect.

Log Format

The Solr log formats are as follows:

**Table 3** Log Format
Log Type	Format	Example
Run logs	<yyyy-MM-dd HH:mm:ss,SSS>\|<Log level>\|<Name of the thread that generates the log>\|<Message in the log>\|<Location where the log event occurs>	2016-02-18 21:31:24,227 \| INFO \| http-bio-192.168.0.227-21101-exec-9 \| [admin] webapp=null path=/admin/cores params={wt=json&_=1432906471360} status=0 QTime=3 \| org.apache.solr.servlet.SolrDispatchFilter.handleAdminRequest(SolrDispatchFilter.java:757)
Audit logs	<yyyy-MM-dd HH:mm:ss,SSS>\|<Log level>\|<Name of the thread that generates the log>\|<Message in the log>\|<Location where the log event occurs>	2016-02-18 09:45:00,093 \| INFO \| http-nio-21101-exec-5 \| RemoteAddr=192.168.0.221:37976 UserName=admin ResourceType=Core Detail=wt=json&_=1458612365349 Result=Success \| com.*.solr.security.audit.AuditLogAppender.auditLogInfo(AuditLogAppender.java:20)