cli: nomad agent does not show configured host_network

[deblasis]

This commit should address #11223.
Specifically it enhances the CLI in order to return two flavours
(default,verbose) of the node status command that include host_network information
as defined in the client stanza of a node.

Signed-off-by: Alessandro De Blasis alex@deblasis.net

[tgross]

Hi @deblasis! I left one comment about the API struct but other than that this looks great.

Tested end-to-end with a host network:

$ nomad node status -self
ID              = 059d16c0-b748-8134-e9b2-0cfbb537eb97
Name            = linux
Class           = <none>
DC              = dc1
Drain           = false
Eligibility     = eligible
Status          = ready
CSI Controllers = <none>
CSI Drivers     = <none>
Uptime          = 15m15s
Host Volumes    = shared_data
Host Networks   = public
CSI Volumes     = <none>
Driver Status   = docker,exec,java,mock_driver,qemu
...

I've also verified this displays properly as <none> if there's no host network. And the verbose output looks good too:

$ nomad node status -self -verbose
ID              = 059d16c0-b748-8134-e9b2-0cfbb537eb97
Name            = linux
Class           = <none>
DC              = dc1
Drain           = false
Eligibility     = eligible
Status          = ready
CSI Controllers = <none>
CSI Drivers     = <none>
Uptime          = 15m24s

Host Volumes
Name         ReadOnly  Source
shared_data  false     /srv/data

Host Networks
Name    CIDR             Interface
public  10.199.0.200/24  <none>
...

[tgross]

Usually we try to have the api struct match the internal struct pretty closely; is there a reason to exclude the reserved ports in this struct?

[tgross]

Oh, and can we add this new object to the Read Node API docs in https://github.com/hashicorp/nomad/blob/main/website/content/api-docs/nodes.mdx as well?

[deblasis]

Usually we try to have the api struct match the internal struct pretty closely; is there a reason to exclude the reserved ports in this struct?

Hi @tgross! No, you are right, it was a genuine mistake.
I am gonna add ReservedPorts, update the tests accordingly and also add your test cases for the <none> values following Hashicorp principles... 😉 codify, codify, codify!

Oh, and can we add this new object to the Read Node API docs in https://github.com/hashicorp/nomad/blob/main/website/content/api-docs/nodes.mdx as well?

Sure, I'll use your example as a template

[tgross]

LGTM! Thanks @deblasis!

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