The plugin file is has been download with umod, and i have started an instance, but the config file does not seem to generate anywhere.
When I run:

umod cfg​

nothing happens.

The configurtion for the plugin would be under umod/config, and would be generated when the server is started successfully with uMod installed. If you don't see that, then uMod is most likely not installed.

Also, I don't think "umod cfg" is a valid command.

it is installed.

when i run "umod", the first command is: "cfg|config - Configure a Toml configuration file"

Ah, oh right. That's for configuring plugins that are loaded, but the plugin would have to be loaded. It will not created a configuration for you.

Make sure you have uMod installed, and that you didn't have any errors during install.

Let me reiterate... I launched a new instance of Valheim with umod. The name of the instance was called something like "Umod Server". Preferably, I would like to launch my old/original server with LGSM.

I assume once umod is installed(from looking at the umod launch script), if any instance is launched from the same installation, any launch script will work(?). I actually prefer LGSM as community resources are linux based and it also has the availability of a discord. I recently spent some time writing my own update script for umod plugins for my rust server, not knowing about this new agent. I very much look foward to the development of it as it helps quite a bit.

You can see what is available for the agent at https://umod.org/guides/getting-started/agent

Keep in mind that this is the only supported method at this time, so using any other scripts or tools wouldn't be recommended as the agent handles installation, updating, etc.

You can skip the launcher creation step if you aren't using our agent to launch, and you can use your own method to start the server.

If you are using any sort of validation and updating with Steam on start though, that will remove uMod from your server.

Would it be possible to just have what we need to manually install umod and then we can write our own script in the meanwhile? Umod did not seem to install cleanly. There is a completion message, but the terminal text freezes up a bit and I have to make a bunch of newlines to be able to wipe the screen.

Merged post

One issue i notice on umod update:

100.00% valheim_server_Data/sharedassets0.assets.resS
Depot 896661 - Downloaded 0 bytes (0 bytes uncompressed)
Total downloaded: 0 bytes (0 bytes uncompressed) from 2 depots
Total downloaded: 0 bytes (0 bytes uncompressed) from 2 depots
Disconnected from Steam
Disconnected from Steam
No resource available to update for package games/valheim (pre-release: no)
Core update failure
App update successful

other than that everything looks fine:

umod show
games/valheim (6246034)
core/webclient (1.0.105)
core/compiler (1.0.110)
core/database (1.0.105)
  name MaxPlayers
  title Max Players
  description Sets the maximum players allowed on the server
  url https://umod.org/plugins/max-players
  tags
     universal
     umod
     maxplayers
     playerlimit
     players

  type plugin
  watchers 1
  license
    name mit

  published_at 02/10/2021 16:08:28
  games
     - Universal

  maintainers
     - Wulf

  branches
     - master

Installed locally
  name MaxPlayers
  version_pattern 0.*-master
  version 0.0.1
  checksum 1dad6d5ad6e88bbafd745b6a5a8dfdc3418df186

umod --version
uMod Agent - (1.2.241)
games/valheim (6246034)
core/webclient (1.0.105)
core/compiler (1.0.110)
core/database (1.0.105)

Yes, you can manually install each component individually, which you can find the info on that at the linked guide. https://umod.org/guides/getting-started/agent

For any commands involving install, you'd need to use the -P for pre-release, which is documented on each game's guide. https://umod.org/games/valheim/guide

Failed to extract Valheim in directory: /home/vhserver/serverfiles/valheim_server_Data/Managed
Access to the path '/System.Core.dll' is denied.
Core update failure
App update successful

The file is owned by the correct user

-rwxrwxr-x 1 vhserver vhserver 59904 Feb 17 05:28 /home/vhserver/serverfiles/valheim_server_Data/Managed/System.Core.dll

Do you have a server running already in that location? The server would need to be shut down to update properly.

it is offline while i am running this.

Hmmm, okay. Passed the info along to the dev to take a look.

Could this be perhaps because ~/serverfiles/umod/umod.lock exists? 

No, that exists for another reason. Could you show me the result of the "umod --version" command?

umod --version
uMod Agent - (1.2.241)
games/valheim (6246034)
core/webclient (1.0.105)
core/compiler (1.0.110)
core/database (1.0.105)

 as stated in a previous post