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>
97 lines
3.2 KiB
Plaintext
97 lines
3.2 KiB
Plaintext
# lib/node_exporter
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# Functions to control the installation and configuration of node_exporter
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# Save trace setting
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_XTRACE_NODE_EXPORTER=$(set +o | grep xtrace)
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set +o xtrace
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NODE_EXPORTER_BINARY="/usr/local/bin/node_exporter"
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NODE_EXPORTER_SYSTEMD_SERVICE="devstack@node-exporter.service"
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NODE_EXPORTER_PORT=${NODE_EXPORTER_PORT:-9100}
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function pre_install_node_exporter {
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# Install OS packages
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install_package wget tar
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}
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function install_node_exporter {
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local ne_tarball=node_exporter-${NODE_EXPORTER_VERSION}.linux-amd64.tar.gz
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local ne_url=https://github.com/prometheus/node_exporter/releases/download/v${NODE_EXPORTER_VERSION}/${ne_tarball}
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# Download node_exporter
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local ne_dest
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ne_dest=`get_extra_file ${ne_url}`
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# Extract the tarball
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tar xzf ${ne_dest} -C $DEST
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# Move binaries to /usr/local/bin
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sudo mv $DEST/node_exporter-${NODE_EXPORTER_VERSION}.linux-amd64/node_exporter /usr/local/bin/
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# Set ownership
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sudo chown $(whoami):$(whoami) ${NODE_EXPORTER_BINARY}
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}
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function init_node_exporter {
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node_exporter_cmd=${NODE_EXPORTER_BINARY}
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node_exporter_cmd+=" --collector.systemd"
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node_exporter_cmd+=" --collector.systemd.unit-include=(edpm_.*|ovs.*|openvswitch|virt.*|rsyslog)\.service"
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node_exporter_cmd+=" --web.disable-exporter-metrics"
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node_exporter_cmd+=" --no-collector.dmi --no-collector.entropy --no-collector.thermal_zone --no-collector.time"
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node_exporter_cmd+=" --no-collector.timex --no-collector.uname --no-collector.stat --no-collector.hwmon"
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node_exporter_cmd+=" --no-collector.os --no-collector.selinux --no-collector.textfile --no-collector.powersupplyclass"
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node_exporter_cmd+=" --no-collector.pressure --no-collector.rapl"
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if [[ $NODE_EXPORTER_COLLECTOR_EXCLUDE != "" ]]; then
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collector_list=$(echo $NODE_EXPORTER_COLLECTOR_EXCLUDE | tr "," "\n")
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for COLLECTOR in ${collector_list[@]}
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do
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node_exporter_cmd+=" --no-collector.${COLLECTOR}"
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done
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fi
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write_user_unit_file $NODE_EXPORTER_SYSTEMD_SERVICE "$node_exporter_cmd" "" "$STACK_USER"
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enable_service $NODE_EXPORTER_SYSTEMD_SERVICE
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}
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function start_node_exporter {
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start_service $NODE_EXPORTER_SYSTEMD_SERVICE
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}
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function stop_node_exporter {
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stop_service $NODE_EXPORTER_SYSTEMD_SERVICE
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}
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function cleanup_node_exporter {
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stop_node_exporter
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disable_service $NODE_EXPORTER_SYSTEMD_SERVICE
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# Remove systemd unit files
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local unitfile="$SYSTEMD_DIR/$NODE_EXPORTER_SYSTEMD_SERVICE"
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sudo rm -f $unitfile
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$SYSTEMCTL daemon-reload
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# Remove Node Exporter binaries
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sudo rm -rf $NODE_EXPORTER_BINARY
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# Remove untar location
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sudo rm -rf $DEST/node_exporter-${NODE_EXPORTER_VERSION}.linux-amd64
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}
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function wait_for_data {
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# Adding sleep time so that metrics is pushed by node exporter
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sleep 60
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}
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function check_data_node_exporter {
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if curl -s --head --request GET "http://$HOST_IP:$NODE_EXPORTER_PORT/metrics" | grep "200 OK" > /dev/null; then
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echo "#### Metrics data ####"
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curl "http://$HOST_IP:$NODE_EXPORTER_PORT/metrics"
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else
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die $LINENO "Couldn't get data from node_exporter"
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fi
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}
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# Restore xtrace
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$_XTRACE_NODE_EXPORTER
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