428b9050c1
A previous change (cf2d127) set SERVICE_HOST for constructing
exporter URLs, but SERVICE_HOST references to the controller
node IP. This breaks multinode deployments where exporters are
running on subnodes, as the health checks would try to reach the
controller instead of the local node.
This change properly checks SERVICE_IP_VERSION and uses HOST_IPV6
for IPv6 environments or HOST_IP for IPv4, ensuring the URL points
to the correct node where the exporter is actually running.
Additionally, IPv6 addresses are wrapped in square brackets as
required for URLs (e.g., http://[2001:db8::1]:9100/metrics).
A common get_host_ip_for_url function is introduced in lib/common
to centralize IP version handling and avoid code duplication across
all exporter modules.
Assisted-By: Claude (claude-sonnet-4-5)
Closes-Bug: #2141918
Change-Id: Icff76c7dc52d6444aa1c049dd6eada27016f4166
Signed-off-by: Douglas Viroel <viroel@gmail.com>
85 lines
2.4 KiB
Plaintext
85 lines
2.4 KiB
Plaintext
# lib/podman_exporter
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# Functions to control the installation and configuration of podman_exporter
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# Save trace setting
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_XTRACE_PODMAN_EXPORTER=$(set +o | grep xtrace)
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set +o xtrace
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PODMAN_EXPORTER_BINARY="/usr/local/bin/prometheus-podman-exporter"
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PODMAN_EXPORTER_SYSTEMD_SERVICE="devstack@podman-exporter.service"
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PODMAN_EXPORTER_PORT=${PODMAN_EXPORTER_PORT:-9882}
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PE_REPO=${PE_REPO:-https://github.com/containers/prometheus-podman-exporter.git}
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PE_REPO_NAME=${PE_REPO_NAME:-prometheus-podman-exporter}
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function pre_install_podman_exporter {
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# Install OS packages
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install_package libgpgme-dev libassuan-dev libbtrfs-dev libdevmapper-dev pkg-config build-essential golang podman uidmap netavark
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}
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function install_podman_exporter {
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# Clone prometheus-podman-exporter
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PE_DIR=$DEST/$PE_REPO_NAME
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git_timed clone $PE_REPO $PE_DIR
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# Generate Binary
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cd $PE_DIR
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make binary
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# Move binaries to /usr/local/bin
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sudo mv $PE_DIR/bin/prometheus-podman-exporter /usr/local/bin/
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# Set ownership
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sudo chown $(whoami):$(whoami) ${NODE_EXPORTER_BINARY}
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}
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function init_podman_exporter {
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podman_exporter_cmd=${PODMAN_EXPORTER_BINARY}
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podman_exporter_cmd+=" --collector.enable-all"
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write_user_unit_file $PODMAN_EXPORTER_SYSTEMD_SERVICE "$podman_exporter_cmd" "" "$STACK_USER"
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enable_service $PODMAN_EXPORTER_SYSTEMD_SERVICE
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}
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function start_podman_exporter {
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start_service $PODMAN_EXPORTER_SYSTEMD_SERVICE
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}
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function stop_podman_exporter {
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stop_service $PODMAN_EXPORTER_SYSTEMD_SERVICE
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}
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function cleanup_podman_exporter {
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stop_podman_exporter
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disable_service $PODMAN_EXPORTER_SYSTEMD_SERVICE
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# Remove systemd unit files
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local unitfile="$SYSTEMD_DIR/$PODMAN_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 $PODMAN_EXPORTER_BINARY
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}
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function wait_for_podman_data {
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# Adding sleep time so that metrics is pushed by podman exporter
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sleep 60
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}
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function check_data_podman_exporter {
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local host_ip
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host_ip=$(get_host_ip_for_url)
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if curl -s --head --request GET "http://$host_ip:$PODMAN_EXPORTER_PORT/metrics" | grep "200 OK" > /dev/null; then
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echo "#### Metrics data ####"
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curl "http://$host_ip:$PODMAN_EXPORTER_PORT/metrics"
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else
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die $LINENO "Couldn't get data from podman_exporter"
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fi
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}
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# Restore xtrace
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$_XTRACE_PODMAN_EXPORTER
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