Expected to have regressed after https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/1008

This patch comes with its own downsides (as described in the comments
for matrix_prometheus_node_exporter_container_http_host_bind_port),
but at least there's:
- no security issue
- metrics remain readable from matrix-prometheus (even if the network metrics are inaccurate)

A better patch is certainly welcome.

This reverts commit 68ca81c8c2.

Supposedly fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/907

Signed-off-by: Ahmad Haghighi <haghighi@fedoraproject.org>

Same reasoning as in 1cd251ed78

These validation tasks should only run when Prometheus is enabled.

It seems like it doesn't cause any issues for any of these services.

Using the hardcoded IP did break while I was
messing with IPv6 stuff on the other branch

By running it in a more privileged container with access to the host network stack and such

Basic system stats, to show stuff the synapse metrics
can't show such as resource usage by bridges, etc

Seems to work fine as well.

This too has only been tested on debian amd64 so far

Initial attempt. Seems to work fine.

Only tested on debian amd64 so far