Greenplum Command Center (GPCC) is unable to start due to error "port already in use"

Products

• VMware Tanzu Greenplum

Issue/Introduction

gpcc could not be started with error:

[gpadmin@~~~~]$ gpcc start
2022-04-12 17:26:17 Starting the gpcc agents and webserver...
2022-04-12 17:27:05 Failed to detect agent start status, please refer /usr/local/greenplum-cc-6.5.0/logs for details

[gpadmin@~~~~ logs]$ gpcc status
2022-04-12 17:29:56 GPCC webserver: running
2022-04-12 17:29:57 GPCC agents: 0/65 agents running 

 

From webserver.log, we could see the port 28080 was actually in use:

2022-04-12 17:34:42 [CRITICAL]Can't listen on port "28080": listen tcp :28080: bind: address already in use
2022-04-12 17:34:42 [CRITICAL]Can't listen on port "28080": listen tcp :28080: bind: address already in use 

 

This means that there is a process already using the port 28080 and GPCC is unable to start

Environment

Product Version: 6.17

Resolution

Firstly, check the process id with the port 28080 using the command:

netstat -anp | grep 28080 

 

After getting the process id, then check if it is possible to terminate the process and then try "gpcc start" again.