'Apache Log4j2: one log file per day, with old file deletion

I'm using log4j 2.14.1.

What I'd like to do is to have an appender which lets me have one log file per day, but then delete older logs after N days (e.g. I'd like to have at most 10 days of log).

I've tried using the DirectWriteRolloverStrategy, which seems good and creates one log file per day, but apparently has no way of deleting older files, so my log directory gets filled with logs; the maxFiles attribute only seems to set The maximum number of files to allow in the time period matching the file pattern (see https://logging.apache.org/log4j/2.x/manual/appenders.html). The Delete Action only appears to work with the DefaultRolloverStrategy.

My appender configuration:

appender.rolling.type = RollingFile
appender.rolling.name = ROLLING
appender.rolling.filePattern = /var/log/application-%d{yyyy-MM-dd}.log
appender.rolling.layout.type = PatternLayout
appender.rolling.layout.pattern = [%d{yyyy-MM-dd'T'HH:mm:ss,SSS}{UTC}Z][%p][%C:%L] %m%n
appender.rolling.policies.type = Policies
appender.rolling.policies.time.type = TimeBasedTriggeringPolicy
appender.rolling.strategy.type = DirectWriteRolloverStrategy
appender.rolling.strategy.maxFiles = 3

Is there any way to configure the maximum amount (or maximum age) of logs in that directory, using properties?

javalogginglog4jlog4j2


Solution 1:[1]

So, after a bit of fiddling, and with some help from Volkan and Ralph, I was able to discover that the Delete action works for DirectWriteRolloverStrategy as well, even though I wasn't provided a working piece of code. I figured out that the properties go like this for what I requested:

appender.rolling.type = RollingFile
appender.rolling.name = ROLLING
appender.rolling.filePattern = /var/log/application-%d{yyyy-MM-dd}.log
appender.rolling.layout.type = PatternLayout
appender.rolling.layout.pattern = [%d{yyyy-MM-dd'T'HH:mm:ss,SSS}{UTC}Z][%p][%C:%L] %m%n
appender.rolling.policies.type = Policies
appender.rolling.policies.time.type = TimeBasedTriggeringPolicy
appender.rolling.strategy.type = DirectWriteRolloverStrategy
appender.rolling.strategy.action.type = Delete
appender.rolling.strategy.action.condition.type = IfFileName
appender.rolling.strategy.action.basepath = /var/log
appender.rolling.strategy.action.maxdepth = 1
appender.rolling.strategy.action.condition.glob = application*.log
appender.rolling.strategy.action.ifAccumulatedFileCount.type = IfAccumulatedFileCount
appender.rolling.strategy.action.ifAccumulatedFileCount.exceeds = 10

I'll contribute the fix to the doc and the example back to the log4j community.

Solution 2:[2]

As Ralph Goers indicated in the log4j-user mailing list, you need to configure a Delete Action. Search for Delete on Rollover in the RollingFileAppender manual.

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Alan Franzoni
Solution 2 Tilo

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