Ubuntu Linux agent instructions

pirates

@Russ Not working for me. I did all your steps, but I am getting this on final check:

alt text

And it was server when I installed base system for VM, but after all this command, it turn to GUI and can't open terminal anymore.

Russ

@pirates, please try this. Switch to root with this command:

sudo su -

Run this:

node /usr/lib/triggercmdagent/resources/app/src/agent.js --console

It should prompt for your token, then start running. If it does, CTRL-C, then restart your triggercmdagent daemon with this command:

systemctl restart triggercmdagent

You can also watch the full log for the agent in another window with:

journalctl -u triggercmdagent -n 100 -f

Please send me any errors you see.

pirates

@Russ I will try but why is it switching to GUI version of my install from headless I had initially?

Russ

@pirates, are you saying you installed Linux without the X-Windows GUI, then when you installed the TRIGGERcmd agent it installed X-Windows with it?

If that's the case, I'd like to try to reproduce that. What Linux are you using?

pirates

@Russ I am using ubuntu server 20.4 on proxmox vm to test. And yes from server to x-windows.. tried twice and happened both time.

Russ

Thanks @pirates. I'll try to reproduce and see if I can fix that. I suspect the agent depends on a package that depends on X-Windows, so it automatically installed X-Windows.

In the meantime, you could disable X-Windows at boot.

EDIT: @pirates, I reproduced the issue. I had a non-GUI, no X-Windows Ubuntu 20 VM, then installed the agent and it installed X-Windows. I'll get back to you soon because there should be a way to run the agent as a background service without X-Windows, like you can on a Raspberry Pi.

EDIT2: @pirates, this procedure worked for me to install the background agent without X-Windows:

sudo su -
git clone https://github.com/rvmey/TRIGGERcmd-Agent.git
cp ubuntupackage.json package.json
apt install -y npm
cd /root/TRIGGERcmd-Agent
npm install
node /root/TRIGGERcmd-Agent/src/agent.js --console
  (enter your token, then press CTRL-C to exit the foreground agent)
/bin/sh /root/TRIGGERcmd-Agent/src/daemonmgr.sh --add /root/.TRIGGERcmdData
systemctl enable triggercmdagent
systemctl status triggercmdagent

I copied these instructions to a new article here.

pirates

I will try as soon as I get some free time and I will get back to you. Thanks for reply.

pirates

Is this normal?

root@fox:~/TRIGGERcmd-Agent# npm install
npm WARN deprecated chokidar@1.7.0: Chokidar 2 will break on node v14+. Upgrade                                   to chokidar 3 with 15x less dependencies.
npm WARN deprecated request@2.88.2: request has been deprecated, see https://git                                  hub.com/request/request/issues/3142
npm WARN deprecated posix-argv-parser@2.0.0: No longer maintained
npm WARN deprecated gulp-util@2.2.20: gulp-util is deprecated - replace it, foll                                  owing the guidelines at https://medium.com/gulpjs/gulp-util-ca3b1f9f9ac5
npm WARN deprecated gulp-util@3.0.8: gulp-util is deprecated - replace it, follo                                  wing the guidelines at https://medium.com/gulpjs/gulp-util-ca3b1f9f9ac5
npm WARN deprecated react-tools@0.13.3: react-tools is deprecated. For more info                                  rmation, visit https://fb.me/react-tools-deprecated
npm WARN deprecated fsevents@1.2.13: fsevents 1 will break on node v14+ and coul                                  d be using insecure binaries. Upgrade to fsevents 2.
npm WARN deprecated har-validator@5.1.5: this library is no longer supported
npm WARN deprecated chokidar@2.1.8: Chokidar 2 will break on node v14+. Upgrade                                   to chokidar 3 with 15x less dependencies.
npm WARN deprecated core-js@1.2.7: core-js@<3 is no longer maintained and not re                                  commended for usage due to the number of issues. Please, upgrade your dependenci                                  es to the actual version of core-js@3.
npm WARN deprecated buffer@2.1.13: This version of 'buffer' is out-of-date. You                                   must update to v2.8.3 or newer
npm WARN deprecated circular-json@0.3.3: CircularJSON is in maintenance only, fl                                  atted is its successor.
npm WARN deprecated core-js@2.6.11: core-js@<3 is no longer maintained and not r                                  ecommended for usage due to the number of issues. Please, upgrade your dependenc                                  ies to the actual version of core-js@3.
npm WARN deprecated urix@0.1.0: Please see https://github.com/lydell/urix#deprec                                  ated
npm WARN deprecated minimatch@0.3.0: Please update to minimatch 3.0.2 or higher                                   to avoid a RegExp DoS issue
npm WARN deprecated resolve-url@0.2.1: https://github.com/lydell/resolve-url#dep                                  recated
npm ERR! code EBADPLATFORM
npm ERR! notsup Unsupported platform for node-windows@0.1.14: wanted {"os":"win3                                  2","arch":"any"} (current: {"os":"linux","arch":"x64"})
npm ERR! notsup Valid OS:    win32
npm ERR! notsup Valid Arch:  any
npm ERR! notsup Actual OS:   linux
npm ERR! notsup Actual Arch: x64

npm ERR! A complete log of this run can be found in:
npm ERR!     /root/.npm/_logs/2020-10-23T21_32_13_991Z-debug.log
root@fox:~/TRIGGERcmd-Agent#

Russ

@pirates, to avoid that problem, copy the ubuntupackage.json file to package.json before you run npm install. I'll update the steps above with that. It looks like the default package.json was the Windows version.

@Russ I have this installed and functional on a Debian 10 Raspberry Pi. The default commands work great, as well as a custom one that triggers a bash script that sends a WOL command to my PC.

Question for you: Does triggercmd run the script as root, or as the user with elevated privileges via sudo?

Russ

@Tim-Manochehri, it runs them as root. If you run this command you'll see that the agent runs as root, and the agent runs the commands:

ps -ef | grep triggercmdagent

Daniel Machín

Hi,

I have followed the instructions in a headless Ubuntu, getting some errors:

dpkg: error al procesar el paquete triggercmdagent (--install):
installed triggercmdagent package post-installation script subprocess returned error exit status 127

Triggercmd is installed but now, every time I try to apt upgrade it tries to reinstall triggercmd...

Is this the normal behaviour?

Russ

@Daniel-Machín, that's not normal. I'd like to try to reproduce that problem and fix it. Can you tell me the commands you ran, and which specific operating system you installed it on? You wrote "headless" so I understand you did not install X-Windows on it.

Daniel Machín

Hi Russ,

Thanks for your reply!

System is an Ubuntu 18.04.5 LTS (bionic) without X-Windows

Anyway, I finally managed to make it work. Issue was dependencies:

apt install npm

solved the problem

Perhaps, including npm as a dependency within .deb package could solve potential future issues (currently, only nodejs is a dependency):

daniel@servidor:~$ sudo apt-cache depends triggercmdagent
triggercmdagent
  Depende: nodejs

Thanks!
Daniel

Russ

Thanks @Daniel-Machín. Good call. I'll add that.

https://github.com/rvmey/TRIGGERcmd-Agent/blob/master/ubuntupackage.json#L52

Pr0k0

@Russ One question does the agent automatically open in Linux at startup like windows? Because every time I boot I need to open it manually and it does not start up automatically. I followed the installation steps above, uninstalled, installed again but the same problem.... in windows and raspberry it is working fine with no issues... Do i need to install with no UI in Linux like raspberry??

Russ

@Pr0k0, the foreground Linux agents do not run automatically in X-Windows. I researched it but couldn't find a standard way to do that. If you install the background service, that will start during boot, but you'll need to make set the "ground" field in your commands.json file to "background" instead of "foreground" because the background agent adds/removes/runs background commands.

Pr0k0

@Russ thnx for the reply, i understand, i tried to make a .sh file to execute the application in a cronjob when boot but it does not start......i cannot understand why, if execute manually the sh file starts normally, i also tried to create a service with some name pointing to the file.....service is active but again in boot, it does not start... the problem is because in the foreground i can make routines and not need to say the computer name everytime....that's why the foreground is helpful...the background service is not visible in the Home Skills so i cannot make a routine. Anyway thanks again for the reply.

Russ

@Pr0k0, background commands should show up as Alexa Smart Home devices, just like foreground commands, so I wonder if you didn't install the background service yet. This command should it:

sudo sh /usr/lib/triggercmdagent/resources/app/src/installdaemon.sh