ChatGpt developed Module MMM-Dockerstat

[sdetweil]

@Rags ssh via program is a tricky thing

[Rags]

@sdetweil Ok, is there any other method of achieving this?

[mumblebaj]

@Rags Welcome to the forum and great start.

Have you tried to run the module and found any issues?

• Node_helper.js must be named node_helper.js

• Your modules defines a bunch of dependent modules in node_helper.js but none of these were installed when you built the module so anybody who clones the module will not get of the dependent modules installed as they are not mentioned in package,js.

• You declare ‘./Logger’ but it is never used. Do you need it?

If you fix the above issues the module starts. I do not run a Docker anywhere but the modules seems to working with the above issues fixed or at least it should get you going.

Always try and run the module first and check for issues and fix them if you can

[Rags]

@mumblebaj Thanks for the encouragement. I made the changes as suggested and updated the files on github. I also did some debugging and tried to resolve issues. However, I guess i am reaching a dead end. So any help will be appreciated greatly.

[mumblebaj]

@Rags Need to be bit more specific with what issues you are experiencing. If you are running you mirror with npm start then list the output from npm. Also check the developer console (shift + ctrl+i) and see if there are any errors there.

[Rags]

@mumblebaj
Thanks for the help, i am running with npm start. The display does not show the status of the docker containers. Instead the rotating arrow is continuously displayed.
I don’t know if the these error messages will indicate something, however here goes

The error msg with npm start;
02.04.2023 17:12.36.528] [LOG] Host 192.168.1.200 is offline.
[02.04.2023 17:12.36.530] [ERROR] (node:11566) UnhandledPromiseRejectionWarning: TypeError: Cannot read properties of undefined (reading ‘info’)
at /home/pi/MagicMirror/modules/MMM-Dockerstat/node_helper.js:59:21
at /home/pi/MagicMirror/modules/MMM-Dockerstat/node_modules/ping/lib/ping-sys.js:40:9
[02.04.2023 17:12.36.531] [ERROR] (node:11566) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag --unhandled-rejections=strict (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 5)
with developer console;

Failed to load resource: the server responded with a status of 404 (Not Found)
0.0.0.0/:1 Refused to execute script from ‘http://0.0.0.0:8088/modules/MMM-Dockerstat/fontawesome.js’ because its MIME type (‘text/html’) is not executable, and strict MIME type checking is enabled.
loader.js:194 Error on loading script: modules/MMM-Dockerstat/fontawesome.js
script.onerror @ loader.js:194

[mumblebaj]

@Rags Lots of issues in the code you had. I created a PR. Check it out.

[Rags]

@mumblebaj
Yes Sir. I noticed the changes committed by you and I immediately approved the merge commit. Please understand this is my first attempt and I had ChatGPT to help me. I guess we both are still learning. Well, I cloned the fresh updated repository and installed it. Now when i run it the constantly rotating arrow is not displayed anymore, but even the status of the containers are not being displayed. The npm start logs do not have any error messages. The dev console is also not indicating any issue. So probably some more debug is required. Sincere request to keep assisting till it is resolved.
Thanks

[mumblebaj]

@Rags Unfortunately I don’t have a docker running here so cannot test that portion of your code. You need to supply the docker name as an input parameter to feed into .exec(`sudo docker ps -f name=${payload.container} --format "{{.Names}} {{.Status}}"`)

Have you added this into the config.js?

[sdetweil]

@mumblebaj can u see the container names from inside a container?

[mumblebaj]

@sdetweil No idea. Never worked with containers before. (Shocking I know :astonished_face: ) Just gave him a bit of code to get the module running correct up until the point he has to check the status of the container code.

[Rags]

@mumblebaj {
module: ‘MMM-Dockerstat’,
header: ‘Docker Status’,
position: ‘top_right’,
config: {
host: ‘192.168.1.200’, // IP address of the second Pi running Docker
interval: 600000, //60 seconds
user:‘pi’,
password:‘mypass’,
container: ‘wireguard’, // just added to check
offlineIcon: ‘fa-times-circle’, // Font Awesome icon for offline status
onlineIcon: ‘fa-check-circle’ // Font Awesome icon for online status
}
},
Yes i added the name of the container. It is still not displaying the status. Anyways the idea was for the module to probe and display the status of all containers running in docker.

[Rags]

@sdetweil said in ChatGpt developed Module MMM-Dockerstat:

@mumblebaj can u see the container names from inside a container?

‘Docker ps’ command list all the containers that are currently running. So i guess the command will execute and should be able to confirm the status with the command
" ‘.exec(sudo docker ps -f name=${payload.container} --format "{{.Names}} {{.Status}}")’"

This command uses the Docker CLI (Command Line Interface) to list the running Docker containers on a host, filtering the results by the name of the container specified in payload.container. The --format option specifies how to format the output of the docker ps command. In this case, {{.Names}} {{.Status}} is used to output only the names and statuses of the containers that match the specified filter. The output is then captured and processed by the SSH library used in the code.

anyways " work in progress ".

[mumblebaj]

@Rags The output from the query does not return a Status of “Online”

See below what it returns.

[Rags]

@mumblebaj said in ChatGpt developed Module MMM-Dockerstat:

@Rags The output from the query does not return a Status of “Online”

See below what it returns.

Yes you are right even i got a similar output when the command was run on the second pi directly. So at least we are getting somewhere. Good news.
sudo docker ps -f name=wireguard --format “{{.Names}} {{.Status}}”
wireguard Up 36 hours.
so now i have to figure out a command line to get status of all containers in a table form with name of container and the uptime.

[sdetweil]

@Rags but are you running this on the docker host? outside any container?

if u run this from INSIDE the container (where MM is running) , does it work?

as I recall, it does not.

I think the command (on the host) is

Usage:  docker exec [OPTIONS] CONTAINER COMMAND [ARG...]

docker exec container_id “docker -ps … rest of parms”

but you will have to use docker command to get the container_id from the name to use in the exec

long time ago, 9 years now, I wrote a whole bunch of scripts to support using docker to deploy and manage a software api testing service…

[mumblebaj]

@Rags you can drop the -f name portion which will then list all containers running. Maybe change the query to something like the following which should give you some JSON type object which you can then work with.

docker ps --format '{"ID":"{{ .ID }}", "Image": "{{ .Image }}", "Names":"{{ .Names }}, "Status": {{.Status}}"}'

This will return something like the below:

{"ID":"4c57d2ba3fd8", "Image": "getting-started", "Names":"silly_hodgkin, "Status": Up 44 minutes"}

From this you can then extract the container you want and check the status. What I have seen the query only returns all running containers

[sdetweil]

@mumblebaj but you don’t need to do all that fancy formatting if you are going to extract the info

awk can do that

11e836525b8d   jshridha/blueiris   "/usr/bin/supervisord"   2 years ago   Up 8 months   0.0.0.0:82->81/tcp, :::82->81/tcp, 0.0.0.0:5901->5900/tcp, :::5901->5900/tcp, 0.0.0.0:8280->8080/tcp, :::8280->8080/tcp   blueiris
(base) sam@sams:~/MagicMirror/config$ 

docker ps | awk ‘{print $1}’

awk can split a string into parts (using some separator char (-F parm, space is default) and then u can print out just the parm u want

also docker ps -q
only displays the container ids.

[mumblebaj]

@sdetweil Thanks Sam. I just installed Docker for the first time earlier and also learning. :-) Looks fun though. I was looking jq but can’t get that to work, How do i install jq on Docker? Or get it to work off the command line?

[sdetweil]

@mumblebaj sorry, no idea on jq

i use terminal commands all the time… jq only in nodejs

when I have a terminal command i need output of, I use terminal command tools.

the thing about docker is you can make an image of a ‘thing’ you want to run, and run it everywhere that supports that processor type. independent of OS and you can run multiple instance at the same time (scale up server?) without changing anything inside the image

start up a web server with this content (mapped source folder)
or that content , or both poof a docker command and up you go.

getting the folders mapped to the right place for the ‘thing’ in the container takes a little (tiny amount) work