Hi Nathan, I wrote a complete tutorial showing how to install it here.

Hope it helps you

https://wiki.tiozaodolinux.com/Guide-for-Linux/Zabbix-RaspBerry-PI

The tutorial is definitely useful, but it assumes a 64-bit Raspberry Pi OS installation, whereas the issue has been originally opened due to lack of 32-bit ARM (armhf) packages for Zabbix releases >=7.0.

I can confirm that such packages are not in the official repository, as it can be easily checked by browsing some key locations:

• https://repo.zabbix.com/zabbix/7.0/raspbian/pool/main/z/zabbix/: lots of packages for Raspbian are only built for the arm64 architecture
• https://repo.zabbix.com/zabbix/7.0/: Debian and Ubuntu packages have dedicated subdirectories for ARM architectures, but for arm64 only

Interestingly, some of the Zabbix 7 packages are not even available for Debian releases earlier than the latest (12/Bookworm at the time of writing). In fact:

• for example, no files for the key package zabbix-server-mysql are available for Debian 11/bullseye in this path
• the "Server, Frontend, Agent" Zabbix component is only available for Debian 12/bookworm in the Zabbix download page (just try to pick an earlier OS version and check that it disappears)
• somebody has already noticed this in the forums; for example:
  • https://www.zabbix.com/forum/zabbix-troubleshooting-and-problems/485074-zabbix-upgrade-to-7
  • https://www.zabbix.com/forum/zabbix-troubleshooting-and-problems/487596-upgrade-from-zabbix-6-4-to-7-0-only-upgraded-zabbix-agent
• as suggested in the latter post, a note in the official page for upgrading to release 7 on Debian/Ubuntu states the following:

  For older Debian versions, replace the link above with the correct one from Zabbix repository. Note, however, that packages for those versions may not include all Zabbix components.

As an additional piece of information please note that, while relevent and apparently promising, a suggestion like this one does not work (I have even tested it), because of course 64-bit binaries fail to run in a 32-bit Docker deployment.

Fortunately, there seems to be a workaround for all these issues. While Zabbix 7 seems not to have been .deb-packaged for the armhf architecture, official Docker images do: I have Zabbix 7 up and running on a Raspberry Pi 4B running a 32-bit Raspberry Pi OS (its kernel has the arm_64bit flag set, but this does not matter) with a 32-bit Docker install, just using official Zabbix Docker images.

maxonthenet I tried to follow that link but the proxy-sqlite3 option just throws

no matching manifest for linux/arm/v7 in the manifest list entries

unfortunately.

craigmcfly you are right, but compatible OS/Architectures depend on the specific image tag you are using. armhf images are available only for Ubuntu-based images, whereas they are not available for Alpine or Oracle Linux.
If unspecified, Docker assumes to pull an image with the latest tag (see the documentation) which, for the case of zabbix-proxy-sqlite3 is, again, not available for armhf as you can easily check here.

You therefore want to explicitly specify that you need to get an Ubuntu-based image. For example:

$ sudo docker pull zabbix/zabbix-proxy-sqlite3
Using default tag: latest
latest: Pulling from zabbix/zabbix-proxy-sqlite3
no matching manifest for linux/arm/v8 in the manifest list entries

Instead:

$ sudo docker pull zabbix/zabbix-proxy-sqlite3:ubuntu-latest
ubuntu-latest: Pulling from zabbix/zabbix-proxy-sqlite3
eb7e9efa9f9d: Already exists 
890f7382506b: Pull complete 
7d1dc878d5ae: Pull complete 
ffd102ea4aa5: Pull complete 
7b511ba24709: Pull complete 
4f4fb700ef54: Pull complete 
0ff826b41582: Pull complete 
Digest: sha256:1c7a8a1b4866514d6d2797f852bbb5d6646bae814abcbe48f039edfef301a2b8
Status: Downloaded newer image for zabbix/zabbix-proxy-sqlite3:ubuntu-latest
docker.io/zabbix/zabbix-proxy-sqlite3:ubuntu-latest

I will add support for armhf bookworm, since there is a demand for it.

ETA this - next week.

Available in 6.0.35, 7.0.5 and 7.2.0alpha1