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Post: Monitoring with GitHub actions #14

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@ds0nt ds0nt commented Apr 1, 2022

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Github actions has a CRON schedule trigger we can use run scripts on a custom schedule. It's pretty cool that Github Actions can run jobs on a CRON schedule, and we can use this ability to cover some of our dev-ops needs.

For example, we used this to check if any of our domain certificates were close to their expiry. Each day, a github action runs at 10:45, checks if our certificates are dangerously close to expiring, and posts to our `#monitoring` Slack if any of them are.
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For example, we used this to check if any of our domain certificates were close to their expiry. Each day, a github action runs at 10:45, checks if our certificates are dangerously close to expiring, and posts to our `#monitoring` Slack if any of them are.
For example, we use this to check if any of our domain certificates are close to their expiry. Each day, a github action runs at 10:45, checks if our certificates are dangerously close to expiring, and posts to our `#monitoring` Slack if any of them are.

probably should use present tense I think


name: check_weather
on:
schedule: # run at 010:45 UTC daily
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schedule: # run at 010:45 UTC daily
schedule: # run at 10:45 UTC daily


This is a simple monitoring flow really; Run Check -> Alert if Problem.

To do this, were going to use three Github actions.
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@anhpngt anhpngt Apr 18, 2022

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To do this, were going to use three Github actions.
To do this, we are going to use a Github action with 3 sequential jobs.

```yaml
# github/workflows/check_weather.yml`

name: check_weather
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@anhpngt anhpngt Apr 18, 2022

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The previous section was talking about certificate expiry, but this section is checking weather instead. This flow is a bit awkward and confusing to me.

Maybe we can add this paragraph:

For simplification and to focus on Github Action, the following example checks and 
reports bad weather instead of our server's certificate. In practice, we can use the 
example to check anything necessary.

shell: bash
run: ./check-weather.sh

# post results
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# post results
# post results
# note that this step only runs when the previous step fails

```
Once your ready to run your workflow, make sure it's merged into your main github branch, for us it's `develop`.

Then it will run on it's CRON schedule, and you can also dispatch it manually from the actions page to run the check immediately.
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@anhpngt anhpngt Apr 18, 2022

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Then it will run on it's CRON schedule, and you can also dispatch it manually from the actions page to run the check immediately.
Then it will run on its CRON schedule, and you can also trigger it manually from the actions page to run the check immediately.

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anhpngt commented Apr 18, 2022

I finished with my comments. Not much really 😂

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