Update Versions of Grafana and Telegraf

[jasonacox]

This is a proposal to upgrade the pinning to newer version of Grafana and Telegraf:

• Grafana (v9.4.14)
• Telegraf (v1.28.2)
• pyPowerwall (v0.6.2t28) - Required to support background color adjustments for newer Grafana versions

During testing, the "look" difference between Grafana v9.1.2 and v9.4.14 are minor. There is a subtle adjustment to the font and labeling (IMHO looks better). No issues with panels. The Power Flow Animation required an update to pyPowerwall to accommodate the grafana-dark background color (transparent settings were in use before, but no longer work).

Related discussions:

• Using more recent versions of Grafana #371
• pypowerwall background color #363
• Docker Desktop Upgrade issue with Telegraf #368

[rcasta74]

Why not use Alpine-based images?

docker.io/grafana/grafana        9.4.14                f69ac1c180a5  7 weeks ago    332 MB
docker.io/grafana/grafana        9.4.14-ubuntu         76a0cce050ec  2 months ago   428 MB

docker.io/library/telegraf       1.28.2-alpine     3d231738b7db  2 weeks ago    210 MB
docker.io/library/telegraf       1.28.2            f10f8ba7295f  3 weeks ago    453 MB

[jasonacox]

Good question. Is there a reason? Key is to make sure we target all architectures (amd64, arm32, arm64) to ensure it they have builds that run on things from Raspberry Pis, x86 to Macs.

[BuongiornoTexas]

Good question. Is there a reason?

I know I ran into an issue when I was doing my ToU service - alpine does not include gcc (required by pandas). Not sure if this could affect any of the core modules in the dashboard. I also have a memory that there is an issue with RPi support for some of the python versions.

[rcasta74]

I have switched to alpine-based image for both grafana and telegraf and no issue so far.
I'm using podman on arm64 (rpi4)

Looking at their page on dockerhub I can see a difference for telegraf, for which the alpine-base image is not available for arm32.
For grafana on the other end I can find the same arch for both ubuntu and alpine version, but it look like that in the last month they have dropped the support to arm32 for both.