T973: Add build script for node_exporter package

.github/workflows/trigger_rebuild_packages.yml

@@ -52,6 +52,8 @@ jobs:
               - 'scripts/package-build/net-snmp/**'
             netfilter:
               - 'scripts/package-build/netfilter/**'
+            node_exporter:
+              - 'scripts/package-build/node_exporter/**'
             opennhrp:
               - 'scripts/package-build/opennhrp/**'
             openvpn-otp:
@@ -149,6 +151,10 @@ jobs:
             trigger_build "netfilter"
           fi
 
+          if [ "${{ steps.changes.outputs.node_exporter }}" == "true" ]; then
+            trigger_build "node_exporter"
+          fi
+
           if [ "${{ steps.changes.outputs.opennhrp }}" == "true" ]; then
             trigger_build "opennhrp"
           fi

scripts/package-build/node_exporter/.gitignore

@@ -0,0 +1,7 @@
+node_exporter/
+*.buildinfo
+*.build
+*.changes
+*.deb
+*.dsc
+

scripts/package-build/node_exporter/build.py

@@ -0,0 +1 @@
+../build.py

scripts/package-build/node_exporter/package.toml

@@ -0,0 +1,21 @@
+[[packages]]
+name = "node_exporter"
+commit_id = "v1.8.2"
+scm_url = "https://github.com/prometheus/node_exporter"
+
+build_cmd = """
+
+# Create the install directory
+mkdir -p debian/usr/sbin
+make build
+
+# Move the node_exporter binary to the install directory
+mv node_exporter debian/usr/sbin
+
+# Build the Debian package
+fpm --input-type dir --output-type deb --name node-exporter \
+    --version $(git describe --tags --always | cut -c2-) --deb-compression gz \
+    --maintainer "VyOS Package Maintainers <maintainers@vyos.net>" \
+    --description "Prometheus exporter for machine metrics" \
+    --license Apache-2.0 -C debian --package ..
+"""