How to solve jenkins 'Disk space is too low' issue?

Question

I have deployed Jenkins in my CentOS machine, Jenkins was working well for 3 days, but yesterday there was a Disk space is too low. Only 1.019GB left.

Answer 1

To check the free space as Jenkins Job:

Parameters

• FREE_SPACE: Needed free space in GB.

Job

#!/usr/bin/env bash

free_space="$(df -Ph . | awk 'NR==2 {print $4}')"

if [[ "${free_space}" = *G* ]]; then
  free_space_gb=${x/[^0-9]*/}

  if [[ ${free_space_gb} -lt ${FREE_SPACE} ]]; then
    echo "Warning! Low space: ${free_space}"
    exit 2
  fi
else
  echo "Warning! Unknown: ${free_space}"
  exit 1
fi


echo "Free space: ${free_space}"

Plugins

Set build description

Post-Build Actions

• Regular expression: Free space: (.*)

• Description: Free space: \1

• Regular expression for failed builds: Warning! (.*)

• Description for failed builds: \1

Answer 2

Beside above solutions, there is a more "COMMON" way - directly delete the largest space consumer from Linux machine. You can follow the below steps:

1. Login to Jenkins machine (Putty)
2. cd to the Jenkins installation path

Using ls -lart to list out hidden folder also, normally jenkin installation is placed in .jenkins/ folder

[xxxxx ~]$ ls -lart

drwxrwxr-x 12 xxxx 4096 Feb 8 02:08 .jenkins/

3. list out the folders spaces

Use df -h to show Disk space in high level

du -sh ./*/ to list out total memory for each subfolder in current path.

du -a /etc/ | sort -n -r | head -n 10 will list top 10 directories eating disk space in /etc/

4. Delete old build or other large size folder

Normally ./job/ folder or ./workspace/ folder can be the largest folder. Please go inside and delete base on you need (DO NOT delete entire folder).

rm -rf theFolderToDelete