ChatGpt developed Module MMM-Dockerstat

[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?