Add prometheus to devstack plugin

devstack/observabilityclient-files/prometheus.yaml

@@ -0,0 +1,2 @@
+host: localhost
+port: 9090

devstack/plugin.sh

@@ -1,3 +1,4 @@
+### sg-core ###
 function preinstall_sg-core {
 	install_package $SG_CORE_CONTAINER_EXECUTABLE
 }
@@ -8,44 +9,118 @@ function install_sg-core {
 
 function configure_sg-core {
 	sudo mkdir -p `dirname $SG_CORE_CONF`
-	sudo cp $SG_CORE_DIR/devstack/sg-core.conf.yaml $SG_CORE_CONF
+	sudo cp $SG_CORE_DIR/devstack/sg-core-files/sg-core.conf.yaml $SG_CORE_CONF
 }
 
 function init_sg-core {
 	$SG_CORE_CONTAINER_EXECUTABLE run -v $SG_CORE_CONF:/etc/sg-core.conf.yaml --network host --name sg-core -d $SG_CORE_CONTAINER_IMAGE
 }
 
+### prometheus ###
+function preinstall_prometheus {
+	install_package $SG_CORE_CONTAINER_EXECUTABLE
+}
+
+function install_prometheus {
+	$SG_CORE_CONTAINER_EXECUTABLE pull $PROMETHEUS_CONTAINER_IMAGE
+}
+
+function configure_prometheus {
+	BASE_CONFIG_FILE=$SG_CORE_DIR/devstack/prometheus-files/prometheus.yml
+	RESULT_CONFIG_FILE=$SG_CORE_WORKDIR/prometheus.yml
+
+	cat $BASE_CONFIG_FILE > $RESULT_CONFIG_FILE
+
+	SERVICES=$(echo $PROMETHEUS_SERVICE_SCRAPE_TARGETS | tr "," "\n")
+	for SERVICE in ${SERVICES[@]}
+	do
+		cat $SG_CORE_DIR/devstack/prometheus-files/scrape_configs/$SERVICE >> $RESULT_CONFIG_FILE
+	done
+
+	if [[ $PROMETHEUS_CUSTOM_SCRAPE_TARGETS != "" ]]; then
+		echo "  - job_name: 'custom'" >> $RESULT_CONFIG_FILE
+		echo "    static_configs:" >> $RESULT_CONFIG_FILE
+		echo "      - targets: [$PROMETHEUS_CUSTOM_SCRAPE_TARGETS]" >> $RESULT_CONFIG_FILE
+	fi
+
+	sudo mkdir -p `dirname $PROMETHEUS_CONF`
+	sudo cp $RESULT_CONFIG_FILE $PROMETHEUS_CONF
+
+	sudo cp $SG_CORE_DIR/devstack/observabilityclient-files/prometheus.yaml /etc/openstack/prometheus.yaml
+}
+
+function init_prometheus {
+	$SG_CORE_CONTAINER_EXECUTABLE run -v $PROMETHEUS_CONF:/etc/prometheus/prometheus.yml --network host --name prometheus -d $PROMETHEUS_CONTAINER_IMAGE --config.file=/etc/prometheus/prometheus.yml --web.enable-admin-api
+}
+
+
 # check for service enabled
 if is_service_enabled sg-core; then
 
-    if [[ "$1" == "stack" && "$2" == "pre-install" ]]; then
-        # Set up system services
-        echo_summary "Configuring system services sg-core"
-        preinstall_sg-core
-
-    elif [[ "$1" == "stack" && "$2" == "install" ]]; then
-        # Perform installation of service source
-        echo_summary "Installing sg-core"
-        install_sg-core
-
-    elif [[ "$1" == "stack" && "$2" == "post-config" ]]; then
-        # Configure after the other layer 1 and 2 services have been configured
-        echo_summary "Configuring sg-core"
-        configure_sg-core
-
-    elif [[ "$1" == "stack" && "$2" == "extra" ]]; then
-        # Initialize and start the sg-core service
-        echo_summary "Initializing sg-core"
-        init_sg-core
-    fi
-
-    if [[ "$1" == "unstack" ]]; then
-		$SG_CORE_CONTAINER_EXECUTABLE stop sg-core
-		$SG_CORE_CONTAINER_EXECUTABLE rm sg-core
-    fi
-
-    if [[ "$1" == "clean" ]]; then
-		$SG_CORE_CONTAINER_EXECUTABLE rmi sg-core:latest
-    fi
+	mkdir $SG_CORE_WORKDIR
+	if [[ $SG_CORE_ENABLE = true ]]; then
+		if [[ "$1" == "stack" && "$2" == "pre-install" ]]; then
+			# Set up system services
+			echo_summary "Configuring system services for sg-core"
+			preinstall_sg-core
+
+		elif [[ "$1" == "stack" && "$2" == "install" ]]; then
+			# Perform installation of service source
+			echo_summary "Installing sg-core"
+			install_sg-core
+
+		elif [[ "$1" == "stack" && "$2" == "post-config" ]]; then
+			# Configure after the other layer 1 and 2 services have been configured
+			echo_summary "Configuring sg-core"
+			configure_sg-core
+
+		elif [[ "$1" == "stack" && "$2" == "extra" ]]; then
+			# Initialize and start the sg-core service
+			echo_summary "Initializing sg-core"
+			init_sg-core
+		fi
+
+		if [[ "$1" == "unstack" ]]; then
+			$SG_CORE_CONTAINER_EXECUTABLE stop sg-core
+			$SG_CORE_CONTAINER_EXECUTABLE rm sg-core
+		fi
+
+		if [[ "$1" == "clean" ]]; then
+			$SG_CORE_CONTAINER_EXECUTABLE rmi $SG_CORE_CONTAINER_IMAGE
+		fi
+	fi
+	if [[ $PROMETHEUS_ENABLE = true ]]; then
+		    if [[ "$1" == "stack" && "$2" == "pre-install" ]]; then
+			# Set up system services
+			echo_summary "Configuring system services prometheus"
+			preinstall_prometheus
+
+		elif [[ "$1" == "stack" && "$2" == "install" ]]; then
+			# Perform installation of service source
+			echo_summary "Installing prometheus"
+			install_prometheus
+
+		elif [[ "$1" == "stack" && "$2" == "post-config" ]]; then
+			# Configure after the other layer 1 and 2 services have been configured
+			echo_summary "Configuring prometheus"
+			configure_prometheus
+
+		elif [[ "$1" == "stack" && "$2" == "extra" ]]; then
+			# Initialize and start the prometheus service
+			echo_summary "Initializing prometheus"
+			init_prometheus
+		fi
+
+		if [[ "$1" == "unstack" ]]; then
+			$PROMETHEUS_CONTAINER_EXECUTABLE stop prometheus
+			$PROMETHEUS_CONTAINER_EXECUTABLE rm prometheus
+		fi
+
+		if [[ "$1" == "clean" ]]; then
+			$PROMETHEUS_CONTAINER_EXECUTABLE rmi $PROMETHEUS_CONTAINER_IMAGE
+		fi
+
+	fi
+	rm -rf $SG_CORE_WORKDIR
 fi
 

devstack/prometheus-files/prometheus.yml

@@ -0,0 +1,4 @@
+global:
+  scrape_interval:     15s # By default, scrape targets every 15 seconds.
+
+scrape_configs:

devstack/prometheus-files/scrape_configs/prometheus

@@ -0,0 +1,4 @@
+  - job_name: 'prometheus'
+
+    static_configs:
+      - targets: ['localhost:9090']

devstack/prometheus-files/scrape_configs/sg-core

@@ -0,0 +1,4 @@
+  - job_name: 'sg-core'
+
+    static_configs:
+      - targets: ['localhost:3000']

devstack/settings

@@ -3,12 +3,36 @@ plugin_requires sg-core ceilometer
 enable_service sg-core
 enable_service ceilometer
 
+### sg-core ###
+SG_CORE_ENABLE=${SG_CORE_ENABLE:-true}
+
 SG_CORE_DIR=$DEST/sg-core
 SG_CORE_CONF_DIR=/etc/sg-core
 SG_CORE_CONF=$SG_CORE_CONF_DIR/sg-core.conf.yaml
+SG_CORE_WORKDIR=$SG_CORE_DIR/devstack/workdir
 
 SG_CORE_CONTAINER_REPOSITORY=${SG_CORE_CONTAINER_REPOSITORY:-quay.io/infrawatch/sg-core}
 SG_CORE_CONTAINER_TAG=${SG_CORE_CONTAINER_TAG:-latest}
 SG_CORE_CONTAINER_IMAGE=$SG_CORE_CONTAINER_REPOSITORY:$SG_CORE_CONTAINER_TAG
 
 SG_CORE_CONTAINER_EXECUTABLE="podman"
+
+### prometheus ###
+PROMETHEUS_ENABLE=${PROMETHEUS_ENABLE:-true}
+
+PROMETHEUS_CONF_DIR=/etc/prometheus
+PROMETHEUS_CONF=$PROMETHEUS_CONF_DIR/prometheus.yml
+
+PROMETHEUS_CONTAINER_REPOSITORY=${PROMETHEUS_CONTAINER_REPOSITORY:-quay.io/prometheus/prometheus}
+PROMETHEUS_CONTAINER_TAG=${PROMETHEUS_CONTAINER_TAG:-latest}
+PROMETHEUS_CONTAINER_IMAGE=$PROMETHEUS_CONTAINER_REPOSITORY:$PROMETHEUS_CONTAINER_TAG
+
+# It's assumed, that each service scrape target has its own same named
+# file in the scrape_configs folder
+# List of "," delimited names
+# Currently supported values are "sg-core" and "prometheus"
+PROMETHEUS_SERVICE_SCRAPE_TARGETS=${PROMETHEUS_SERVICE_SCRAPE_TARGETS:="sg-core"}
+
+# List of "," delimited targets. Each target is <ip>:<port>
+PROMETHEUS_CUSTOM_SCRAPE_TARGETS=${PROMETHEUS_CUSTOM_SCRAPE_TARGETS:-""}
+