Jenkins Console Output log location in filesystem

Question

I want to access and grep Jenkins Console Output as a post build step in the same job that creates this output  Redirecting logs with  gt  gt  log txt is not a solution since this is not supported by my build steps   Build   echo  This is log    Post build step   grep  is  path to console output   Where is the specific log file created in filesystem

User · Answer

Log location     JENKINS HOME  jobs   JOB NAME  builds   BUILD NUMBER  log   Get log as a text and save to workspace   cat   JENKINS HOME  jobs   JOB NAME  builds   BUILD NUMBER  log  gt  gt  log txt

User · Answer

This is designed for use when you have a shell script build step  Use only the first two lines to get the file name   You can get the console log file  using bash magic  for the current build from a shell script this way and check it for some error string  failing the job if found   logFilename   JENKINS HOME    JOB URL    JENKINS URL   logFilename   logFilename  job   jobs   builds   BUILD NUMBER  log  grep    Failure      logFilename    exitCode        exitCode -ne 1     amp  amp  exit 1   You have to build the file name by taking the JOB URL  stripping off the leading host name part  adding in the path to JENKINS HOME  replacing   job   to   jobs   to handle all nested folders  adding the current build number and the file name   The grep returns 0 if the string is found and 2 if there is a file error  So a 1 means it found the error indication string  That makes the build fail

User · Answer

Easy solution would be   curl  http   jenkinsUrl job  lt Build Name gt   lt Build Number gt  consoleText -OutFile  lt FilePathToLocalDisk gt    or for the last successful build     curl  http   jenkinsUrl job  lt Build Name gt  lastSuccessfulBuild consoleText -OutFile  lt FilePathToLocalDisk gt

User · Answer

Bruno Lavit has a great answer  but if you want you can just access the log and download it as txt file to your workspace from the job s URL      BUILD URL  consoleText   Then it s only a matter of downloading this page to your   Workspace    You can use  Invoke ANT  and use the GET target On Linux you can use wget to download it to your workspace etc    Good luck    Edit   The actual log file on the file system is not on the slave  but kept in the Master machine  You can find it under   JENKINS HOME jobs  JOB NAME builds lastSuccessfulBuild log  If you re looking for another build just replace lastSuccessfulBuild with the build you re looking for

User · Answer

Jenkins stores the console log on master   If you want programmatic access to the log  and you are running on master  you can access the log that Jenkins already has  without copying it to the artifacts or having to GET the http job URL   From http   javadoc jenkins io archive jenkins-1 651 hudson model Run html getLogFile    this returns the File object for the console output  in the jenkins file system  this is the  log  file in the build output directory    In my case  we use a chained  child  job to do parsing and analysis on a parent job s build   When using a groovy script run in Jenkins  you get an object named  build  for the run   We use this to get the http   javadoc jenkins io archive jenkins-1 651 hudson model Build html for the upstream job  then call this job s  getLogFile     Added bonus  since it s just a File object  we call  getParent   to get the folder where Jenkins stores build collateral  like test xmls  environment variables  and other things that may not be explicitly exposed through the artifacts  which we can also parse   Double added bonus  we also use matrix jobs   This sometimes makes inferring the file path on the system a pain    getLogFile   getParent   takes away all the pain

User · Answer

You can install this Jenkins Console log plugin to write the log in your workspace as a post build step   You have to build the plugin yourself and install the plugin manually   Next  you can add a post build step like that     With an additional post build step  shell script   you will be able to grep your log   I hope it helped

User · Answer

For very large output logs it could be difficult to open  network delay  scrolling   This is the solution I m using to check big log files       https     URL  jenkins job   jobName    buildNumber     in the left column you see   View as plain text  Do a right mouse click on it and choose save links as  Now you can save your big log as  txt file  Open it with notepad   and you can go through your logs easily without network delays during scrolling

User · Answer

I found the console output of my job in the browser at the following location   http    Jenkins URL  job  Job Name  default  Build Number  console

[jenkins] Jenkins "Console Output" log location in filesystem

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