Feature request: LXC docker-script hostname and mDNS support

[joriws]

As proxmox helper script makes on all LXC named as "docker" or "alpine-docker". So my suggestion is to allow setting LXC hostname directly, and which also sets PVE LXC name. Also Avahi daemon should be installed to support mDNS to help reaching to your set hostname.

Now all is manual work, although not a lot of work but still if PVE hosts are running DHCP. And I understand not everyone is fan of mDNS, but it should be optional.

on pve console
pct set 101 --hostname pihole

then on pihole console (I use alpine-docker or docker-alpine)
apk update
apk add avahi
rc-update add avahi-daemon
rc-service avahi-daemon start

Then I could just simply control pihole by http://pihole.local. I know there is pihole-helper script already - pihole is not the case but the idea of hostnames, just randomly used pihole as an example. Container could be anything like TeslaLogger or Birdnet-Go or ...

[joriws]

This is also very relevant to MeTube LXC - it creates with metube hostname but it is not easy to resolve IP-address it got. Also adding qemu client to list of automatically installed packages, I think it reports IP at least to proxmox.

[tremor021]

Qemu agent works only for VM's, not LXC's

[michelroegl-brunner]

You can use the advanced settings and change the hostname there? This also affects the name shown on your pve node.

[joriws]

Why this was closed? mDNS/Avahi install was the biggest part along with creation time name setting.

[michelroegl-brunner]

Why should we for a fraction of the user install software they prob. never use nor want?

The hostname you can set as stated above with advanced settings

[joriws]

I am sorry if you don't see benefits of mDNS in home environment. I though the repository was proxmox helper scripts and most of the scripts could be made better if script offers "do you need mdns?" - if you do script install and don't then work as usual. I was just trying to help you make base script engine better. As with LXC and DHCP containers get what ever IP-address which you need to find by trying or from router/modem.

[michelroegl-brunner]

I heare what you are saying but i gose against one of aoir principles, keep it simple. We tend to only install what is needed for a given app to run, and idealy the whole setup should be hands free after the initial dialouge. But what i can see to do is, to create a script wich you can run inside the lxc if you neede mdns. Just like the pve post install, but not on the host but insde the lxc.
This would spare the manual install, but also dose not bloat the initial install.
Would this something be what you would use? And one thing to add, dhcp is a built in os/network function and i would not compare this to our scripts

[joriws]

What I was thinking a bit similar to "docker-install.sh" with question of installing portainer or pihole with unbound question. Like if avahi-routines were in "source <(curl -s https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/misc/build.func)" (or similar), so it would not bloat that much. Like single routine for changing container & hostname and installing avahi and enable&run it.

But if separate helper script is easy to communicate with potential users why not.