+function install_prometheus_nodeexporter(){
+ sudo useradd --no-create-home --shell /bin/false node_exporter
+ sudo wget -q https://github.com/prometheus/node_exporter/releases/download/v$PROMETHEUS_NODE_EXPORTER_TAG/node_exporter-$PROMETHEUS_NODE_EXPORTER_TAG.linux-amd64.tar.gz -P /tmp/
+ sudo tar -C /tmp -xf /tmp/node_exporter-$PROMETHEUS_NODE_EXPORTER_TAG.linux-amd64.tar.gz
+ sudo cp /tmp/node_exporter-$PROMETHEUS_NODE_EXPORTER_TAG.linux-amd64/node_exporter /usr/local/bin
+ sudo chown node_exporter:node_exporter /usr/local/bin/node_exporter
+ sudo rm -rf node_exporter-$PROMETHEUS_NODE_EXPORTER_TAG.linux-amd64*
+ sudo cp ${OSM_DEVOPS}/installers/docker/files/node_exporter.service /etc/systemd/system/node_exporter.service
+ sudo systemctl daemon-reload
+ sudo systemctl restart node_exporter
+ sudo systemctl enable node_exporter
+ return 0
+}
+