https://community.splunk.com/t5/Splunk-Search/How-to-write-a-search-to-track-system-time-change-in-a-Linux/m-p/270817#M81519 <P>Hi vkumar6.<BR /> The way to find if a server system time has changed is to take logs from <CODE>/var/log/messages</CODE> and create a search like this:</P> <PRE><CODE>index=your_index source="/var/log/messages" “Time has been changed” | ... </CODE></PRE> <P>before to do this you have to be sure that system time changes are correctly logged, if not you have to add following to the audit.rules file. Should record any attempt to set or adjust time from on—privileged user or root:</P> <PRE><CODE>-S clock_settime –S settimeofday –S adjtimex </CODE></PRE> <P>Bye.<BR /> Giuseppe</P> Sun, 11 Dec 2016 09:31:21 GMT gcusello 2016-12-11T09:31:21Z https://community.splunk.com/t5/Splunk-Search/How-to-write-a-search-to-track-system-time-change-in-a-Linux/m-p/270815#M81517 <P>I need an example search to track system time change in a Linux system. Please help me.</P> Sun, 11 Dec 2016 00:29:54 GMT https://community.splunk.com/t5/Splunk-Search/How-to-write-a-search-to-track-system-time-change-in-a-Linux/m-p/270815#M81517 vkumar6 2016-12-11T00:29:54Z https://community.splunk.com/t5/Splunk-Search/How-to-write-a-search-to-track-system-time-change-in-a-Linux/m-p/270816#M81518 <P>Would you please be more specific about what you are trying to do?</P> Sun, 11 Dec 2016 01:59:08 GMT https://community.splunk.com/t5/Splunk-Search/How-to-write-a-search-to-track-system-time-change-in-a-Linux/m-p/270816#M81518 richgalloway 2016-12-11T01:59:08Z https://community.splunk.com/t5/Splunk-Search/How-to-write-a-search-to-track-system-time-change-in-a-Linux/m-p/270817#M81519 <P>Hi vkumar6.<BR /> The way to find if a server system time has changed is to take logs from <CODE>/var/log/messages</CODE> and create a search like this:</P> <PRE><CODE>index=your_index source="/var/log/messages" “Time has been changed” | ... </CODE></PRE> <P>before to do this you have to be sure that system time changes are correctly logged, if not you have to add following to the audit.rules file. Should record any attempt to set or adjust time from on—privileged user or root:</P> <PRE><CODE>-S clock_settime –S settimeofday –S adjtimex </CODE></PRE> <P>Bye.<BR /> Giuseppe</P> Sun, 11 Dec 2016 09:31:21 GMT https://community.splunk.com/t5/Splunk-Search/How-to-write-a-search-to-track-system-time-change-in-a-Linux/m-p/270817#M81519 gcusello 2016-12-11T09:31:21Z https://community.splunk.com/t5/Splunk-Search/How-to-write-a-search-to-track-system-time-change-in-a-Linux/m-p/270818#M81520 <P>Thank you ... <span class="lia-unicode-emoji" title=":slightly_smiling_face:">🙂</span> Giuseppe</P> Mon, 12 Dec 2016 10:31:59 GMT https://community.splunk.com/t5/Splunk-Search/How-to-write-a-search-to-track-system-time-change-in-a-Linux/m-p/270818#M81520 vkumar6 2016-12-12T10:31:59Z https://community.splunk.com/t5/Splunk-Search/How-to-write-a-search-to-track-system-time-change-in-a-Linux/m-p/270819#M81521 <P>Thankyou Rich I got answer from Giuseppe..</P> Mon, 12 Dec 2016 10:33:10 GMT https://community.splunk.com/t5/Splunk-Search/How-to-write-a-search-to-track-system-time-change-in-a-Linux/m-p/270819#M81521 vkumar6 2016-12-12T10:33:10Z https://community.splunk.com/t5/Splunk-Search/How-to-write-a-search-to-track-system-time-change-in-a-Linux/m-p/270820#M81522 <P>Hi vkumar6.<BR /> if the solution solves your needs, please accept my answer.<BR /> By.<BR /> Giuseppe</P> Mon, 12 Dec 2016 15:36:23 GMT https://community.splunk.com/t5/Splunk-Search/How-to-write-a-search-to-track-system-time-change-in-a-Linux/m-p/270820#M81522 gcusello 2016-12-12T15:36:23Z https://community.splunk.com/t5/Splunk-Search/How-to-write-a-search-to-track-system-time-change-in-a-Linux/m-p/270821#M81523 <P>Hi Giuseppe,</P> <P>Is there any event code for linux when system time changes. Like windows we have Event code 4616 in the same do we have any event code for linux</P> Tue, 13 Dec 2016 10:40:16 GMT https://community.splunk.com/t5/Splunk-Search/How-to-write-a-search-to-track-system-time-change-in-a-Linux/m-p/270821#M81523 vkumar6 2016-12-13T10:40:16Z https://community.splunk.com/t5/Splunk-Search/How-to-write-a-search-to-track-system-time-change-in-a-Linux/m-p/270822#M81524 <P>Hi vkumar6,<BR /> No, for my knoledge there aren't eventcodes in Linux but the message “Time has been changed” in "/var/log/messages" it's sufficient to trap this event.<BR /> Bye.<BR /> Giuseppe</P> Tue, 13 Dec 2016 10:48:16 GMT https://community.splunk.com/t5/Splunk-Search/How-to-write-a-search-to-track-system-time-change-in-a-Linux/m-p/270822#M81524 gcusello 2016-12-13T10:48:16Z https://community.splunk.com/t5/Splunk-Search/How-to-write-a-search-to-track-system-time-change-in-a-Linux/m-p/270823#M81525 <P>modify your inputs.conf to take also "/var/log/messages".<BR /> Bye.<BR /> Giuseppe</P> Tue, 13 Dec 2016 14:13:26 GMT https://community.splunk.com/t5/Splunk-Search/How-to-write-a-search-to-track-system-time-change-in-a-Linux/m-p/270823#M81525 gcusello 2016-12-13T14:13:26Z https://community.splunk.com/t5/Splunk-Search/How-to-write-a-search-to-track-system-time-change-in-a-Linux/m-p/270824#M81526 <P>Hi Giuseppe,</P> <P>Thnakyou so much i m able to get logs .</P> <P>Thanks,<BR /> Vijay</P> Tue, 13 Dec 2016 14:47:21 GMT https://community.splunk.com/t5/Splunk-Search/How-to-write-a-search-to-track-system-time-change-in-a-Linux/m-p/270824#M81526 vkumar6 2016-12-13T14:47:21Z