Node-exporter idempotent installation

[osm/devops.git] / installers / full_install_osm.sh

diff --git a/installers/full_install_osm.sh b/installers/full_install_osm.sh
index 38e50c6..e759c56 100755 (executable)
--- a/installers/full_install_osm.sh
+++ b/installers/full_install_osm.sh
@@ -192,9 +192,9 @@ function uninstall_lightweight() {
             fi
             remove_k8s_namespace $OSM_STACK_NAME
         else
+
             remove_stack $OSM_STACK_NAME
             remove_stack osm_elk
-            uninstall_prometheus_nodeexporter
         fi
         echo "Now osm docker images and volumes will be deleted"
         newgrp docker << EONG
@@ -603,16 +603,28 @@ function install_osmclient(){
 }
 
 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 ${OSM_DEVOPS}/installers/docker/files/node_exporter.service /etc/systemd/system/node_exporter.service
-    sudo systemctl daemon-reload
-    sudo systemctl restart node_exporter
-    sudo systemctl enable node_exporter
+    if (systemctl -q is-active node_exporter)
+        then
+            echo "Node Exporter is already running."
+        else
+            echo "Node Exporter is not active, installing..."
+            if getent passwd node_exporter > /dev/null 2>&1; then
+                echo "node_exporter user exists"
+            else
+                echo "Creating user node_exporter"
+                sudo useradd --no-create-home --shell /bin/false node_exporter
+            fi
+            sudo wget -q https://github.com/prometheus/node_exporter/releases/download/v$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
+            echo "Node Exporter has been activated in this host."
+    fi
     return 0
 }
 
@@ -693,6 +705,7 @@ function install_juju() {
     echo "Installing juju"
     sudo snap install juju --classic
     [ -z "$INSTALL_NOLXD" ] && sudo dpkg-reconfigure -p medium lxd
+    [[ ":$PATH": != *":/snap/bin:"* ]] && PATH="/snap/bin:${PATH}"
     echo "Finished installation of juju"
     return 0
 }
@@ -942,6 +955,13 @@ function generate_docker_env_files() {
         $WORKDIR_SUDO sed -i "s|OSMMON_VCA_SECRET.*|OSMMON_VCA_SECRET=$OSM_VCA_SECRET|g" $OSM_DOCKER_WORK_DIR/mon.env
     fi
 
+    if ! grep -Fq "OSMMON_VCA_CACERT" $OSM_DOCKER_WORK_DIR/mon.env; then
+       echo "OSMMON_VCA_CACERT=${OSM_VCA_CACERT}" | $WORKDIR_SUDO tee -a $OSM_DOCKER_WORK_DIR/mon.env
+    else
+       $WORKDIR_SUDO sed -i "s|OSMMON_VCA_CACERT.*|OSMMON_VCA_CACERT=${OSM_VCA_CACERT}|g" $OSM_DOCKER_WORK_DIR/mon.env
+    fi
+
+
     # POL
     if [ ! -f $OSM_DOCKER_WORK_DIR/pol.env ]; then
         echo "OSMPOL_SQL_DATABASE_URI=mysql://root:${MYSQL_ROOT_PASSWORD}@mysql:3306/pol" | $WORKDIR_SUDO tee -a $OSM_DOCKER_WORK_DIR/pol.env