docs(ins): adds troubleshouting for scaleway-vmagent metrics (int-add-vmagent)

Author: Rémy Noel

pages/instances/troubleshooting/filling-memory-and-gpu-metrics-on-the-cockpit-dashboard.mdx

@@ -0,0 +1,19 @@
+---
+title: Missing memory and GPU metrics on the cockpit dashboard
+tags: cockpit instance
+dates:
+  validation:
+  posted:
+---
+
+When no metrics can be seen on the cocpit's `Instance Overview` or
+`Instance GPUs` dashboards, you should check the vmagent (folded-by default)
+row. It will tell you on which vm the scaleway-vmagent is answering  requests.
+
+If the vmagent is not installed on your machine, you can install it by adding
+the [scaleway ppa (on ubuntu)](https://launchpad.net/~scaleway/+archive/ubuntu/stable) or
+[copr (if RHEL based)](https://copr.fedorainfracloud.org/coprs/g/scaleway/stable/)
+and install the `scaleway-vmagent` package (respectively with apt or dnf).
+
+If installed, you may check that the service is running with
+`systemctl status scaleway-vmagent`.

pages/instances/troubleshooting/index.mdx

@@ -74,4 +74,5 @@ productIcon: InstanceProductIcon
   - [Fix unreachable IPv6 RHEL-based Instances after transitioning to routed IP](/instances/troubleshooting/fix-unreachable-ipv6-rhel-based-instance)
   - [Fix unreachable Ubuntu Noble Instances following a reboot](/instances/troubleshooting/fix-unreachable-noble-after-reboot)
   - [Troubleshooting issues with faulty kernel installations](/instances/troubleshooting/reboot-from-faulty-kernel)
+  - [Missing memory and GPU metrics on the cockpit dashboard](/instances/troubleshooting/filling-memory-and-gpu-metrics-on-the-cockpit-dashboard)
 </LinksList>