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Add serving of scrapes as Prometheus metrics

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This commit is contained in:
Mike Spreitzer
2021-11-06 06:10:05 +00:00
parent dc07025470
commit 4ca4ccdcc2
3 changed files with 174 additions and 5 deletions
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14
hack/lib/etcd.sh
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@@ -95,7 +95,7 @@ kube::etcd::start_scraping() {
if [[ -d "${ARTIFACTS:-}" ]]; then
ETCD_SCRAPE_DIR="${ARTIFACTS}/etcd-scrapes"
else
ETCD_SCRAPE_DIR=$(mktemp -d -t test-etcd-scrapes.XXXXXX)
ETCD_SCRAPE_DIR=$(mktemp -d -t test.XXXXXX)/etcd-scrapes
fi
kube::log::info "Periodically scraping etcd to ${ETCD_SCRAPE_DIR} ."
mkdir -p "${ETCD_SCRAPE_DIR}"
@@ -108,17 +108,21 @@ kube::etcd::start_scraping() {
}
kube::etcd::scrape() {
curl -s -S "${KUBE_INTEGRATION_ETCD_URL}/metrics" > "${ETCD_SCRAPE_DIR}/next" && mv "${ETCD_SCRAPE_DIR}/next" "${ETCD_SCRAPE_DIR}/$(date +%H%M%S).scrape"
curl -s -S "${KUBE_INTEGRATION_ETCD_URL}/metrics" > "${ETCD_SCRAPE_DIR}/next" && mv "${ETCD_SCRAPE_DIR}/next" "${ETCD_SCRAPE_DIR}/$(date +%s).scrape"
}
kube::etcd::stop() {
if [[ -n "${ETCD_SCRAPE_PID:-}" ]]; then
if [[ -n "${ETCD_SCRAPE_PID:-}" ]] && [[ -n "${ETCD_SCRAPE_DIR:-}" ]] ; then
kill "${ETCD_SCRAPE_PID}" &>/dev/null || :
wait "${ETCD_SCRAPE_PID}" &>/dev/null || :
kube::etcd::scrape || :
# shellcheck disable=SC2015
tar czf "${ETCD_SCRAPE_DIR}/scrapes.tgz" "${ETCD_SCRAPE_DIR}"/*.scrape && rm "${ETCD_SCRAPE_DIR}"/*.scrape || :
(
# shellcheck disable=SC2015
cd "${ETCD_SCRAPE_DIR}"/.. && \
tar czf etcd-scrapes.tgz etcd-scrapes && \
rm -rf etcd-scrapes || :
)
fi
if [[ -n "${ETCD_PID-}" ]]; then
kill "${ETCD_PID}" &>/dev/null || :