使Nodejs脚本在gitlab CI中在后台运行

Question

Our dev project start by command npm run serve Is it possible to run it on background mode? I tried to use nohup, & in end of string. It works properly in shell, but when it start by CI on Gitlab, pipeline state always is "running" cause npm output permanently shows on screen

Answer 1

The clean way would be to run a container whose run command is "npm run serve"

I'm not certain running a non-blocking command through your pipeline is the right way but you should try using "&" "npm run serve" will run the command in "detached mode.

Answer 2

I've faced the same problem using nohup and & . It was working well in shell, but not on Gitlab CI, It looks like npm start was not detached.

What worked for me is to call npm start inside a bash script and run it on before_script hook.

test:
  stage: test
  before_script:
    - ./serverstart.sh
  script:
   - npm test
  after_script:
    - kill -9 $(ps aux | grep '\snode\s' | awk '{print $2}')

on the bash script serverstart.sh

# !/bin/bash

# start the server and send the console and error logs on nodeserver.log
npm start > nodeserver.log 2>&1 &

# keep waiting until the server is started 
# (in my case wait for mongodb://localhost:27017/app-test to be logged)
while ! grep -q "mongodb://localhost:27017/app-test" nodeserver.log
do
  sleep .1
done
echo -e "server has started\n"
exit 0

this allowed me to detach npm start and pass to next command while keeping npm start process alive