jenkins ssh-agent is not working on specific slave machine

Question

Suddenly my sshagent step in jenkins pipeline is not working and throwing below error

But same step with same creds is working fine on master and other slave agents.Also able to see ssh-agent is running on the slave node

$ ps -ef|grep -i ssh-agent
root      8548     1  0 11:40 ?        00:00:00 ssh-agent -s
root      9622     1  0 12:29 ?        00:00:00 ssh-agent -s

stage which failing

stage('Pull ansible roles') {          
                steps {
                    sshagent(credentials:[XX_XX_KEY_ID]){
                        sh '''
                            ansible-galaxy install -r requirements.yml -p roles
                        '''
                    }     
                }
            }

Could you please guide me what may be the issue

Answer 1

I have found the issue is with /tmp permission. Jenkins slave user unable to execute ssh-agent command

[devops@01 ~]$ ssh-agent
mkdtemp: private socket dir: Permission denied
[devops@01 ~]$ sudo chmod 1777 /tmp
[devops@01 ~]$ ssh-agent
SSH_AUTH_SOCK=/tmp/ssh-B3lS2R3p2bpT/agent.10399; export SSH_AUTH_SOCK;
SSH_AGENT_PID=10400; export SSH_AGENT_PID;
echo Agent pid 10400;
[devops@01 ~]$

Reference - https://github.com/babun/babun/issues/815