Interface says "connecting", error on console

[coljac]

I have successfully used sshmon on several machines (it's amazing!). On a new machine, after configuring a host and hitting connect, the GUI reports "connecting" and gets stuck there. The following is written to the console. The temp files are there in /tmp.

[2020-01-22T22:11:55.757Z] DEBUG: sshmon/7298 on hubble: register socket 2f_v_ftfAnSJrydkAAAB (scope=api/socket-notify)
[2020-01-22T22:12:07.620Z] DEBUG: sshmon/7298 on hubble: ssh -N -T -M -o ControlPersist=no -o BatchMode=yes -o StreamLocalBindUnlink=yes -o ServerAliveInterval=5 -o ServerAliveCountMax=3 -S /tmp/sshmon-7298wQE0Ol2Rrm5x/1 predator (scope=host/ssh, childPid=7794)
[2020-01-22T22:12:07.620Z] DEBUG: sshmon/7298 on hubble:  (scope=redux)
    action: {
      "type": "HOST_STATE_CHANGE",
      "id": "predator",
      "status": "connecting",
      "pid": 7794,
      "controlPath": "/tmp/sshmon-7298wQE0Ol2Rrm5x/1",
      "reason": "api"
    }
[2020-01-22T22:12:07.622Z]  INFO: sshmon/7298 on hubble: api call success (scope=api/socket-setup)
    apiCall: {
      "key": "hostConnect",
      "args": {
        "id": "predator"
      }
    }
[2020-01-22T22:12:07.624Z] ERROR: sshmon/7298 on hubble: watcher error (scope=host/thunks/connect-thunks, err.code=ENOSPC)
    Error: watch /tmp/sshmon-7298wQE0Ol2Rrm5x ENOSPC
        at _errnoException (util.js:1031:13)
        at FSWatcher.start (fs.js:1397:19)
        at Object.fs.watch (fs.js:1423:11)
        at createFsWatchInstance (/snapshot/sshmon/server/node_modules/chokidar/lib/nodefs-handler.js:37:15)
        at setFsWatchListener (/snapshot/sshmon/server/node_modules/chokidar/lib/nodefs-handler.js:80:15)
        at FSWatcher.NodeFsHandler._watchWithNodeFs (/snapshot/sshmon/server/node_modules/chokidar/lib/nodefs-handler.js:229:14)
        at FSWatcher.NodeFsHandler._handleDir (/snapshot/sshmon/server/node_modules/chokidar/lib/nodefs-handler.js:408:19)
        at FSWatcher.<anonymous> (/snapshot/sshmon/server/node_modules/chokidar/lib/nodefs-handler.js:456:19)
        at FSWatcher.<anonymous> (/snapshot/sshmon/server/node_modules/chokidar/lib/nodefs-handler.js:461:16)
        at FSReqWrap.oncomplete (fs.js:167:5)

[hpello]

ENOSPC means "Device out of space". It probably means that you have reached the maximum number of open file watchers.

Could you try to increase fs.inotify.max_user_watches, like advised in https://stackoverflow.com/questions/22475849/node-js-what-is-enospc-error-and-how-to-solve ?

[coljac]

Correct! Issue was Dropbox using all the file watchers. Sshmon working again fine.