• Recent
  • Tags
  • Unsolved
  • Solved
  • MagicMirror² Repository
  • Documentation
  • 3rd-Party-Modules
  • Donate
  • Discord
  • Register
  • Login
MagicMirror Forum
  • Recent
  • Tags
  • Unsolved
  • Solved
  • MagicMirror² Repository
  • Documentation
  • 3rd-Party-Modules
  • Donate
  • Discord
  • Register
  • Login
A New Chapter for MagicMirror: The Community Takes the Lead
Read the statement by Michael Teeuw here.

Crontab to Restart Magic Mirror does not work

Scheduled Pinned Locked Moved Bug Hunt
11 Posts 3 Posters 2.4k Views 3 Watching
Loading More Posts
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • D Offline
    Desert Rat
    last edited by Nov 27, 2021, 6:20 PM

    I have researched all of the documentation I can find but have failed to resolve this problem.
    I can create a Crontab entry as follows 44 * * * * PM2 restart MagicMirror

    I created a second entry to put a date entry in a file each minute in the same crontab . This one works as expected.

    My research has exposed this kind of issue using pm2 and I’ve attempted to implement suggested resolutions. All were ineffective.

    Forgive me if I missed a posed solution but would greatly appreciate any assistance.

    Thanks

    S E 2 Replies Last reply Nov 27, 2021, 6:35 PM Reply Quote 0
    • S Offline
      sdetweil @Desert Rat
      last edited by sdetweil Nov 27, 2021, 6:36 PM Nov 27, 2021, 6:35 PM

      @desert-rat what is in the pm2 log??

      pm2 logs --lines=50

      what user is the cron entry running as?
      typically root…

      but the pm2 entry is setup for pi probably

      Sam

      How to add modules

      learning how to use browser developers window for css changes

      1 Reply Last reply Reply Quote 0
      • E Offline
        evroom @Desert Rat
        last edited by Nov 27, 2021, 7:11 PM

        @desert-rat

        I would try pm2 iso PM2.
        And even would advise to use the full path, that can be determined using:
        which pm2

        With Debian it would be /usr/local/bin/pm2

        And you can check this log if cron did anything at all:
        /var/log/syslog

        Or edit /etc/rsyslog.conf and remove comment on the line with cron (around line 63)
        Then the dedicated cron log will be in /var/log/cron.log.
        After editing, restart with „sudo systemctl restart rsyslog“.

        Good luck,

        E.J.

        MagicMirror version: 2.30.0
        Raspberry Pi 4 Model B Rev 1.5 (8 GB RAM)
        Raspbian GNU/Linux 12 (bookworm)

        Test environment:
        MagicMirror version: v2.30.0
        Raspberry Pi 3 Model B Plus Rev 1.3 (1 GB RAM)
        Raspbian GNU/Linux 12 (bookworm)

        S 1 Reply Last reply Nov 27, 2021, 7:12 PM Reply Quote 0
        • S Offline
          sdetweil @evroom
          last edited by sdetweil Nov 27, 2021, 7:13 PM Nov 27, 2021, 7:12 PM

          @evroom good catch on the uppercase pm2…

          @Desert-Rat
          everything in Linux is case sensitive

          Sam

          How to add modules

          learning how to use browser developers window for css changes

          D 1 Reply Last reply Nov 27, 2021, 9:24 PM Reply Quote 0
          • D Offline
            Desert Rat @sdetweil
            last edited by Nov 27, 2021, 9:24 PM

            @sdetweil
            Thanks for the quick reply. I changed the crontab. I actually changed it to PM2 START MagicMirror.

            The process I used was to , via the terminal, pm2 stop MagicMirror. This worked and MagicMirror was stopped sucessfully.
            Crontab was updated as above PM2 START MagicMirror.
            It did not start.

            Here are the entries from the log file

            Nov 27 13:44:01 raspberrypi CRON[3620]: (pi) CMD (SUDO PM2 START MagicMirror)
            Nov 27 13:44:01 raspberrypi CRON[3618]: (CRON) info (No MTA installed, discarding output)
            Nov 27 13:55:01 raspberrypi CRON[3661]: (root) CMD (sudo pm2 restart MagicMirror)
            Nov 27 13:55:04 raspberrypi CRON[3659]: (CRON) info (No MTA installed, discarding output)
            Nov 27 14:17:01 raspberrypi CRON[3772]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)

            S E 2 Replies Last reply Nov 27, 2021, 10:01 PM Reply Quote 0
            • S Offline
              sdetweil @Desert Rat
              last edited by Nov 27, 2021, 10:01 PM

              @desert-rat PM2 is not the command

              pm2 is the command and start is the parm

              all lower case

              Sam

              How to add modules

              learning how to use browser developers window for css changes

              1 Reply Last reply Reply Quote 0
              • E Offline
                evroom @Desert Rat
                last edited by Nov 27, 2021, 10:08 PM

                @desert-rat

                Could you please show the crontab ?

                $ crontab -l
                

                To get rid of this:

                (CRON) info (No MTA installed, discarding output)
                

                you have to add >/dev/null 2>&1

                Try:

                44 * * * * /usr/local/bin/pm2 start MagicMirror >/dev/null 2>&1
                

                MagicMirror version: 2.30.0
                Raspberry Pi 4 Model B Rev 1.5 (8 GB RAM)
                Raspbian GNU/Linux 12 (bookworm)

                Test environment:
                MagicMirror version: v2.30.0
                Raspberry Pi 3 Model B Plus Rev 1.3 (1 GB RAM)
                Raspbian GNU/Linux 12 (bookworm)

                1 Reply Last reply Reply Quote 0
                • D Offline
                  Desert Rat
                  last edited by Nov 29, 2021, 11:21 PM

                  Problem resolved! Outstanding.

                  My thanks to all who responded.

                  My mission now is to research the provided solution and try to understand why it worked. Clearly the devil is in the details.

                  Thanks again to all of you

                  S 1 Reply Last reply Nov 29, 2021, 11:26 PM Reply Quote 0
                  • S Offline
                    sdetweil @Desert Rat
                    last edited by Nov 29, 2021, 11:26 PM

                    @desert-rat said in Crontab to Restart Magic Mirror does not work:

                    to understand why it worked.

                    your crontab entry

                    44 * * * * PM2 restart MagicMirror
                    

                    the working crontab entry

                    44 * * * * /usr/local/bin/pm2 start MagicMirror >/dev/null 2>&1
                    

                    could be restart as well…

                    simple, two things

                    cron runs as root, BUT certain folders are not in the path
                    so you need to specify the path to the command

                     /usr/local/bin/
                    

                    second the command is pm2, you tried PM2
                    in linux EVERYTHING is case sensitive

                    so yours is command not found, cause there is no command named PM2

                    Sam

                    How to add modules

                    learning how to use browser developers window for css changes

                    D 1 Reply Last reply Dec 14, 2021, 3:55 PM Reply Quote 0
                    • D Offline
                      Desert Rat @sdetweil
                      last edited by Dec 14, 2021, 3:55 PM

                      @sdetweil Thanks Sam! I clearly need some education. Do you have a favorite set of training documentation for newbies

                      Desert Rat

                      S 1 Reply Last reply Dec 14, 2021, 6:02 PM Reply Quote 0
                      • 1
                      • 2
                      • 1 / 2
                      • First post
                        Last post
                      Enjoying MagicMirror? Please consider a donation!
                      MagicMirror created by Michael Teeuw.
                      Forum managed by Sam, technical setup by Karsten.
                      This forum is using NodeBB as its core | Contributors
                      Contact | Privacy Policy