fatal: unable to commit credential store: Device or resource busy

Scene is jenkins Need to extract current commit Of tag, Run the command ：

$ git fetch --tags -f
fatal: unable to commit credential store: Device or resource busy

Reasons for appearance

stay devops In the assembly line , structure job Its function is to kubernetes pod Accomplished （ Used jenkins kubernetes plug-in unit ）.

however git It's a private warehouse , Run some git Command requires user name and password , I used it credential store.

namely ：

git config --global credential.helper store

This command is simply to record the password to ~/.git-credentials Under the document .git store The plug-in will write the configuration to /root/.gitconfig.

You can take a brief look at the contents of these two files

• .git-credentials

http://root:<your_pass>@gitlab.test.com

• .gitconfig

[[email protected] customagent]# cat /root/.gitconfig 

[credential]
	helper = store

So follow the normal thinking , I mount two files into all the build containers , In this case , There is such a problem . Many processes access this file concurrently , There was this mistake .

How to solve ？

jenkins Provides a git plug-in unit , It can help us run some git command

// git-cloner yes jenkins username/password Type of secret
withCredentials([gitUsernamePassword(credentialsId: 'git-cloner', gitToolName: 'Default')]) {
    
     sh 'git fetch --all'
     sh 'git fetch --tags -f'
}

Post this clip to jenkins pipeline in , So pull to the remote tag list .

Next, through comparison tag Of md5 And the current md5, You can know the current commit Do you have tag.