How to restart a node js server

Question

I ve installed and is running a node js server on osx  I ve dled a chat module and is happily running it  I ve altered some pieces and need to restart the server to see the effects   I only know how to restart by closing the terminal window and then reopneing it and then running node chatdemo js again   Any way to restart without closing terminal   Thanks

User · Accepted Answer

If it s just running  not a daemon  then just use Ctrl-C   If it s daemonized then you could try     ps aux   grep node you   PID  1 5  0 2  44172  8260 pts 2    S    15 25   0 00 node app js   kill -2 PID   Where PID is replaced by the number in the output of ps

User · Answer

I had the same problem and then wrote this shell script which kills all of the existing node processes      bin bash echo  The following node processes were found   ps aux   grep   node     grep -v grep nodepids   ps aux   grep   node     grep -v grep   cut -c10-15   echo  OK  so we will stop these process es now      for nodepid in   nodepids     do echo  Stopping PID    nodepid kill -9  nodepid done echo  Done    After this is saved as a shell script  xxx sh  file you might want to add it to your PATH as described here    Please note that this will kill all of the processes with   node   in it s name except grep s own  so I guess in some cases it may also kill some other processes with a similar name

User · Answer

In this case you are restarting your node js server often because it s in active development and you are making changes all the time   There is a great hot reload script that will handle this for you by watching all your  js files and restarting your node js server if any of those files have changed   Just the ticket for rapid development and test   The script and explanation on how to use it are at here at Draco Blue

User · Answer

During development the best way to restart server for seeing changes made is to use  nodemon     npm install nodemon -g      nodemon  your app name     nodemon will watch the files in the directory that nodemon was started  and if they change  it will automatically restart your node application   Check nodemon git repo  https   github com remy nodemon

User · Answer

I understand that my comment relate with windows  but may be someone be useful  For win  run in cmd   wmic process  where  commandline like   my app js   AND name  node exe    CALL Terminate   then you can run your app again    node my app js   Also you can use it in batch file  with escape quotes   wmic process  where  commandline like    my app js    AND name  node exe    CALL Terminate node my app js

User · Answer

Using  kill -9  PID   or  killall -9 node  worked for me where  kill -2  PID   did not work

User · Answer

If I am just run the node app from console  not using forever etc  I use control   C  not sure if OSX has the same key combination to terminate but much faster than finding the process id and killing it  you could also add the following code to the chat app you are using and then type  exit  in the console whenever you want to close down the app   process stdin resume    process stdin setEncoding  utf8     process stdin on  data   function data      if  data     exit n   process exit

User · Answer

To say  nodemon  would answer the question   But on how only to kill  all  node demon s   the following works for me   pkill -HUP node

User · Answer

At first open terminal command line then go to your project directory  now install nodemon by using command npm install nodemon --save-dev this command will make sure it saved as developer dependency  If you are working with expressjs then in your package file it will look like        name    expressjs-app      version    0 0 0      private   true     scripts          start    node   bin www          dependencies          cookie-parser     1 4 4        debug     2 6 9        express     4 16 1        http-errors     1 6 3        morgan     1 9 1        pug     2 0 4          devDependencies          nodemon     2 0 3          now modify the  start  value in your package json file  for production we will use the exsiting value but for development will use nodemon  to track the changes in source file without restarting server  There for new value for start is      start    if    NODE ENV   production     then node   bin www  else nodemon   bin www  fi   final package json file will look like       name    expressjs-app      version    0 0 0      private   true     scripts          start    if    NODE ENV   production     then node   bin www  else nodemon   bin www  fi          dependencies          cookie-parser     1 4 4        debug     2 6 9        express     4 16 1        http-errors     1 6 3        morgan     1 9 1        pug     2 0 4          devDependencies          nodemon     2 0 3          to uninstall nodemon jusy simply run the command npm uninstall nodemon

[macos] How to restart a node.js server

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