Jenkins not executing jobs pending - waiting for next executor

Question

Jenkins won t execute any jobs  Having viewed this question  I have disabled all slave nodes but a simple job won t even run on the Master node   What is wrong

User · Answer

In my case it was caused by number of executors  I had 1  and running Jenkins Job  Project  from Pipeline  my pipeline script started other Job in Jenkins   It caused deadlock - my pipeline held executor and was waiting for its job  but the job was waiting for free executor   The solution may be increasing of   of executors in Jenkins - gt  Manage Jenkins - gt  Manage Nodes - gt  Configure  icon on required node

User · Answer

Short answer  Kill all the jobs which are running on the master   In my case there were 3 jobs hung on the master for more than 10 days which were unnoticed  We usually do not run any jobs directly on the master  everything is run on slaves  I killed these 3 jobs which were hung  automatically the executors on the slave started picking up jobs   Point to note that even though we have 8 slaves only 1 slave was in this affected state    EDIT  We found the answer to why only one slave was in this affected state   When a Jenkins slave goes down  all the pending jobs automatically get transferred over to the master  All the 3 hung jobs which I killed were from this slave  so its likely a connection issue between the master and this particular slave

User · Answer

For me below  solution worked    Jenkins --  Manage Jenkins --  Manage Nodes --  master -  configure --  Node properties --  Restrict Jobs execution at node - is enabled and given access to specific users  I have given access myself and then job started to run    If Restrict Jobs execution at node is enabled scheduled tasks cannot run

User · Answer

go to Jenkins -  Manage Jenkins -  Manage Nodes  examine the  master  node  Click on configure icon    In my case No of executors was set to 0  Increased it and issue got fixed

User · Answer

You may have milestones set up and your job won t run until the previous job is complete

User · Answer

I ran into a similar problem because my master was set to     of executor  The maximum number of concurrent builds that Jenkins may perform on this agent    Go to Jenkins --  Manage Jenkins --  Manage Nodes  and click on the configure button of your master node  increase the number of executor to run mutiple jobs at a time

User · Answer

In my case  I had just installed the  Authorize Project  plugin and incorrectly setup the strategy in  Manage Jenkins -  Configure Global Security -  Access Control for Builds  as  Run as anonymous   So  anonymous  had no rights to execute the job   Setting the first strategy as  Run as User who Triggered Build  unlocked the queued jobs

User · Answer

In my case I ve to set Execute concurrent builds if necessary in job s General settings

User · Answer

I ran into a similar problem because my master was set to  Leave this machine for tied jobs only   So  even though I disabled the Slave  Jenkins kept on bypassing the Master  looking for something else    Go to Jenkins --  Manage Jenkins --  Manage Nodes  and click on the configure button of your master node  looks like a screwdriver and a wrench   Check the Usage and make sure it s on  Utilize this slave as much as possible

User · Answer

For me I have to restart the executors manually  Click on  Dead  under  Build Executor Status  and push the restart button

User · Answer

The Jenkins admin console can run  even with the Master node offline  This can happen when Jenkins runs out of disk space   To confirm  do the following  with thanks to geekride - jenkins-pending-waiting-for-next-available-executor     go to Jenkins -  Manage Jenkins -  Manage Nodes examine the  master  node to see if it is offline  It may be reporting that the master node is out of disk space

User · Answer

What worked for me  I finally noticed the Build Executor Status window on the left on the main Jenkins dashboard  I run a dev test instance on my local system with 2 executors  Both were currently occupied with builds that were not running  Upon cancelling these to jobs  my third  pending  job was able to run

User · Answer

In my case  I had the following set in my JenkinsFile  node  node               There was no node called  node   only master  the value had been left in there after following some basic tutorials   Changing the value to  master  got the build working

User · Answer

In my case it is similar to  Michael Easter  I got a problem in a job due to lack of disk space  I cleared some space  restarted Jenkins but still the problem persisted   The solution was to go to Jenkins -  Manage Jenkins -  Manage Nodes  and just Click on the button to update the status

User · Answer

I m a little late to the game  but this may help others   In my case my jenkins master has a shared external resource  which is allocated to jenkins jobs by the external-resource-dispatcher-plugin  Due to bug JENKINS-19439 in the plugin  which is in beta   I found that my resource had been locked by a previous job  but wasn t unlocked when that previous job was cancelled   To find out if a resource is currently in the locked state  navigate to the affected jenkins node  Jenkins -  Manage Jenkins -  Manage Nodes -  master  You should see the current state of any external resources  If any are unexpectedly locked this may be the reason why jobs are waiting for an executor   I couldn t find any details of how to manually resolve this issue   Restarting jenkins didn t resolve the problem   In the end I went with the brutal approach    Remove the external resource   see Jenkins -  Manage Jenkins -  Manage Nodes -  master -  configure  Restart jenkins Re-create the external resource

User · Answer

In my case  I noticed this behavior when the box was out of memory  RAM  I went to Jenkins -  Manage Jenkins -  Manage Nodes and found an out of memory exception  I just freed up some memory on the machine and the jobs started to go into the executors

[jenkins] Jenkins not executing jobs (pending - waiting for next executor)

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