I was doing this to monitor Jenkins's certificate, but since that's
managed by _cert-manager_, there's really practically no risk of it
expiring without warning anymore. Since Jenkins is already being
scraped directly, having this extra check just gernerates extra
notifications when there is an issue without adding any real value.
Using domain names in the "blackbox" probe makes it difficult to tell
the difference between a complete Internet outage and DNS issues. I
switched to using these names when I changed how the firewall routed
traffic to the public DNS servers, since those were the IP addresses
I was using to determine if the Internet was "up." I think it makes
sense, though, to just ping the upstream gateway for that check. If
EverFast changes their routing or numbering, we'll just have to update
our checks to match.
The alerts for Z-Wave device batteries in particular are pretty
annoying, as they tend to "flap" for some reason. I like having the
alerts show up on Alertmanager/Grafana dashboards, but I don't
necessarily need notifications about them. Fortunately, we can create a
special "none" receiver and route notifications there, which does
exactly what we want here.
Using Kustomize, we can define the configuration file separately from
the Kubernetes resources, and use `configMapGenerators` to generate the
ConfigMap for it. Additionally, this will make it possible to update
_ntfy_ using `updatebot`.
Tabitha wants to be able to accept Apple Pay payemnts via stripe, but
this requires an additional "domain verification" step. Apple needs to
make an HTTP request to the domain owned by the vendor, which in the
case of Invoice Ninja, must be the "app URL." Unfortunately, there
does not appear to be a way to tell Apple/Stripe/IN to use the client
portal domain or any other domain besides the app URL. Therefore, we
need to expose Invoice Ninja to the Internet under the public
_pyrocufflink.net_ domain, rather than the internal _pyrocufflink.blue_.
Let's run `updatebot` on Saturday morning, so I can apply the changes
over the weekend if I have time. If I don't, there's no harm in having
the PRs open for a few days until I can get to it during the week.
Restic backups are now stored in MinIO on _chromie.pyrocufflink.blue_.
All data have been migrated from _burp1.p.b_, which is being
decommissioned.
The instance of MinIO on _chromie_ uses a certificate signed by DCH CA,
rather than the _pyrocufflink.blue_ wildcard certificate signed by
ZeroSSL. As such, we need to configure `restic` to trust the DCH Root
CA certificate in order to use the MinIO S3 API.
The latest version of `updatebot` has two major changes:
1. Projects can encompass multiple images, eliminating the need for
multiple configuration files and CronJobs. Projects are now defined
in a YAML documen, since the data structure is very nested and is
cumbersome to express in TOML.
2. Pull requests can now include a diff of the resources that will
change if the PR is merged. This requires the `kubectl` and `diff`
programs (which are not currently included in the _updatebot_
container image, so we bind-mount them from the host) and permission
to compare the local manifests using the Kubernetes API. Oddly,
computing the diff requires permission to use the PATCH method, even
though the client is not requesting any changes. This is apparently
a long-standing bug ([issue #981][0]) that may or may not ever be
fixed.
[0]: https://github.com/kubernetes/kubectl/issues/981
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