Hello,
Ive posted this in stackoverflow, with no success. So Im trying here now. I'm seeing the following behaviour in log4j2, not sure if it's the expected. This is part of my log4j.xml: <RollingFile name="ACCESS_LOG" filePattern="${sys:log.dir}vproxy_access.%d{${sys:log.rotateAccess}}" append="true" bufferedIO="true" bufferSize="16384" immediateFlush="false"> <PatternLayout> <Pattern>%m%d{yyyy-MM-dd HH:mm:ss.SSS}%n</Pattern> </PatternLayout> <Policies> <TimeBasedTriggeringPolicy/> </Policies> </RollingFile> The log.rotateAccess is a system property than can have the values of 'yyyy-MM-dd' for daily rotation or 'yyyy-MM-dd.HH' for hourly rotation. So, when I start to send requests to my app at 19:01 the vproxy_access.2017-05-25.19 is correctly created and requests are logged. This is the first line of this log: 1,88.0.193.186,2017-05-25 19:01:31.733,A,56,A,0,A,190,A,60,N,,,,2716,423,0,53,ok,2017-05-25 19:01:31.852 It's ok, but this is the last line: 1,167.114.89.180,2017-05-25 20:59:59.943,A,56,A,66,A,190,A,60,N,,,gzip,213161,323,5853,18,ok,2017-05-25 20:59:59.967 The file has rotated at 21:00 instead of 20:00. So the vproxy_access.2017-05-25.20 contains all requests from 21:00:00 to 21:59:59. And if we check the vproxy_access.2017-05-25.23, the first and last line are: 1,167.114.89.180,2017-05-25 23:59:59.984,A,56,A,0,A,190,A,60,N,,,gzip,165921,323,4683,12,ok,2017-05-26 00:00:00.002 ( . . . ) 1,167.114.89.180,2017-05-26 00:59:59.984,A,56,A,0,A,190,A,60,N,,,,147025,323,0,10,ok,2017-05-26 00:59:59.999 Furthermore, today we have stopped to send requests at 01:00 (vproxy_access.2017-06-02.00). When we have started to send requests again at 12:07, the log file vproxy_access.2017-06-02.01 has been created. This is the first line: 1,167.114.89.180,2017-06-02 12:07:23.561,A,56,A,0,A,190,A,60,N,,167.114.89.180:80,gzip,151749,323,4335,8 ,ok,2017-06-02 12:07:23.575 I need my vproxy_access.yyyy-MM-dd.HH to contain all lines from HH:00:00 to HH:59:59 Any help would be very appreciated. Joan.