489d13fc17
DevStack provides get_extra_file[1] to download node_exporter/prometheus tarballs and cache them in ci for further use. Let's reuse the same instead of wget the binary. This CR also adds cleanup phase under unstack step. Links: [1]. https://github.com/openstack/devstack/blob/master/functions#L50-L79 Closes-Bug: #2102666 Change-Id: I858eea3584794fdc10e45c9f80bfacdabdd537e2 Signed-off-by: Chandan Kumar (raukadah) <chkumar@redhat.com>
118 lines
3.4 KiB
Plaintext
118 lines
3.4 KiB
Plaintext
# lib/prometheus
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# Functions to control the installation and configuration of prometheus
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# Save trace setting
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_XTRACE_PROMETHEUS=$(set +o | grep xtrace)
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set +o xtrace
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PROMETHEUS_SYSTEMD_SERVICE="devstack@prometheus.service"
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PROMETHEUS_DATA_DIRECTORY="/var/lib/prometheus"
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PROMETHEUS_PORT=${PROMETHEUS_PORT:-9090}
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function pre_install_prometheus {
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# Install OS packages
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install_package wget tar jq
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}
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function install_prometheus {
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local prom_tarball=prometheus-${PROMETHEUS_VERSION}.linux-amd64.tar.gz
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local prom_url=https://github.com/prometheus/prometheus/releases/download/v${PROMETHEUS_VERSION}/${prom_tarball}
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# Download Prometheus
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local prom_dest
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prom_dest=`get_extra_file ${prom_url}`
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# Extract the tarball
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tar xzf ${prom_dest} -C $DEST
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# Move binaries to /usr/local/bin
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sudo mv $DEST/prometheus-${PROMETHEUS_VERSION}.linux-amd64/prometheus /usr/local/bin/
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sudo mv $DEST/prometheus-${PROMETHEUS_VERSION}.linux-amd64/promtool /usr/local/bin/
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# Set ownership
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sudo chown $(whoami):$(whoami) /usr/local/bin/prometheus
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sudo chown $(whoami):$(whoami) /usr/local/bin/promtool
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}
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function configure_prometheus {
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# Configure prometheus
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sudo mkdir /etc/prometheus
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sudo chown $(whoami):$(whoami) /etc/prometheus
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# Copy User's prometheus config
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sudo cp ${PROMETHEUS_CONFIG_FILE} /etc/prometheus
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# Change the permission of prometheus config
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sudo chmod 0644 /etc/prometheus/$(basename ${PROMETHEUS_CONFIG_FILE})
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# Show User's prometheus config
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sudo cat /etc/prometheus/$(basename ${PROMETHEUS_CONFIG_FILE})
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# Create data directory
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sudo mkdir ${PROMETHEUS_DATA_DIRECTORY}
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sudo chown $(whoami):$(whoami) ${PROMETHEUS_DATA_DIRECTORY}
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}
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function init_prometheus {
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prometheus_command="/usr/local/bin/prometheus"
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prometheus_command+=" --config.file=/etc/prometheus/prometheus.yml"
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prometheus_command+=" --storage.tsdb.path=${PROMETHEUS_DATA_DIRECTORY}"
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prometheus_command+=" --web.enable-admin-api"
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prometheus_command+=" --web.enable-remote-write-receiver"
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write_user_unit_file $PROMETHEUS_SYSTEMD_SERVICE "$prometheus_command" "" "$STACK_USER"
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enable_service $PROMETHEUS_SYSTEMD_SERVICE
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}
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function start_prometheus {
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start_service $PROMETHEUS_SYSTEMD_SERVICE
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}
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function stop_prometheus {
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stop_service $PROMETHEUS_SYSTEMD_SERVICE
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}
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function cleanup_prometheus {
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stop_prometheus
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disable_service $PROMETHEUS_SYSTEMD_SERVICE
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# Remove systemd unit files
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local unitfile="$SYSTEMD_DIR/$PROMETHEUS_SYSTEMD_SERVICE"
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sudo rm -f $unitfile
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$SYSTEMCTL daemon-reload
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# Remove Prometheus directories
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sudo rm -rf /etc/prometheus
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sudo rm -rf ${PROMETHEUS_DATA_DIRECTORY}
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# Remove binaries
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sudo rm /usr/local/bin/prometheus
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sudo rm /usr/local/bin/promtool
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# Remove untar location
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sudo rm -rf $DEST/prometheus-${PROMETHEUS_VERSION}.linux-amd64
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}
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function wait_for_data {
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# Adding sleep time so that data is scrapped by prometheus
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sleep 60
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}
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function check_data_prometheus {
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local url="http://$HOST_IP:$PROMETHEUS_PORT/api/v1/label/__name__/values"
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if curl -s --head --request GET "$url" | grep "200 OK" > /dev/null; then
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echo "#### List of metrics names ####"
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curl -s "$url" | jq -r '.data[]'
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else
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die $LINENO "Couldn't get data from prometheus"
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fi
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}
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# Restore xtrace
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$_XTRACE_PROMETHEUS
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