Compress and Deleting AMQ Broker Logs Regularly
AMQ Broker, or its Open Source product which is ActiveMQ Artemis, can generate a log to a specific file and can be use for auditing purpose. However sometimes we ned to maintain some log retentions by archieving and deleting logs after some period of time to prevent logs filling up our storage.
We can achieve that by using log4j2 configuration which is comes out of the box in AMQ instance. For example, this configuration below would create a new log file every 5 minutes, compress old logs, and deleting logs that is older than 10 minutes.
# Log file appender
appender.log_file.type = RollingFile
appender.log_file.name = log_file
appender.log_file.fileName = ${sys:artemis.instance}/log/artemis.log
appender.log_file.filePattern = ${sys:artemis.instance}/log/artemis.log.%d{yyyyMMdd.HHmm}.gz
appender.log_file.layout.type = PatternLayout
appender.log_file.layout.pattern = %d %-5level [%logger] %msg%n
appender.log_file.policies.type = Policies
appender.log_file.policies.cron.type = CronTriggeringPolicy
appender.log_file.policies.cron.schedule = 0 */5 * ? * *
appender.log_file.policies.cron.evaluateOnStartup = true
appender.log_file.strategy.type = DefaultRolloverStrategy
appender.log_file.strategy.action.type = Delete
appender.log_file.strategy.action.basePath = ${sys:artemis.instance}/log/
appender.log_file.strategy.action.maxDepth = 1
appender.log_file.strategy.action.condition.type = IfFileName
appender.log_file.strategy.action.condition.glob = artemis.log.*.gz
appender.log_file.strategy.action.ifAny.type = IfAny
appender.log_file.strategy.action.ifAny.ifLastModified.type = IfLastModified
appender.log_file.strategy.action.ifAny.ifLastModified.age = PT10M
We can change 10minutes period into something else by changing the value of “age” following ISO-8601 duration format,
https://logging.apache.org/log4j/2.x/javadoc/log4j-core/org/apache/logging/log4j/core/appender/rolling/action/Duration.html#parse(java.lang.CharSequence)
While log compressing, can be modified by changing the “cron schedule” value,
https://logging.apache.org/log4j/2.12.x/log4j-core/apidocs/org/apache/logging/log4j/core/util/CronExpression.html