haproxy/reg-tests/contrib/prometheus.vtc
Christopher Faulet 529b6a3a2c REGTESTS: Fix prometheus script to perform HTTP health-checks
TCP Health-checks are enabled on server "s2". However it expects to receive
an HTTP requests. So HAProxy configuration must be changed to perform HTTP
health-checks instead. Otherwise, depending on the timing, an error can be
triggered if a check is performed before the end of the script.

This scripts never failed because TCP_QUICKACK was disabled, adding some
latency on health-checks. But since the last fix, it is an issue.

This patch should be backported as far as 2.4.
2022-08-24 12:17:34 +02:00

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varnishtest "prometheus exporter test"
#REQUIRE_VERSION=2.4
#REQUIRE_SERVICES=prometheus-exporter
feature ignore_unknown_macro
server s1 {
rxreq
txresp
} -start
server s2 {
rxreq
txresp
} -start
haproxy h1 -conf {
defaults
mode http
timeout connect "${HAPROXY_TEST_TIMEOUT-5s}"
timeout client "${HAPROXY_TEST_TIMEOUT-5s}"
timeout server "${HAPROXY_TEST_TIMEOUT-5s}"
option socket-stats
listen stats
bind "fd@${stats}"
http-request use-service prometheus-exporter if { path /metrics }
frontend fe
bind "fd@${fe}"
default_backend be
backend be
stick-table type ip size 1m expire 10s store http_req_rate(10s)
option httpchk
server s1 ${s1_addr}:${s1_port}
server s2 ${s2_addr}:${s2_port} check inter 5s maxqueue 10 maxconn 12 pool-max-conn 42
} -start
client c1 -connect ${h1_stats_sock} {
txreq -url "/metrics"
rxresp
# test general metrics
expect resp.status == 200
expect resp.body ~ ".*haproxy_process.*"
expect resp.body ~ ".*haproxy_frontend.*"
expect resp.body ~ ".*haproxy_listener.*"
expect resp.body ~ ".*haproxy_backend.*"
expect resp.body ~ ".*haproxy_server.*"
expect resp.body ~ ".*haproxy_sticktable.*"
# test expected NaN values
expect resp.body ~ ".*haproxy_server_check_failures_total{proxy=\"be\",server=\"s1\"} NaN.*"
expect resp.body ~ ".*haproxy_server_check_up_down_total{proxy=\"be\",server=\"s1\"} NaN.*"
expect resp.body ~ ".*haproxy_server_check_failures_total{proxy=\"be\",server=\"s2\"} 0.*"
expect resp.body ~ ".*haproxy_server_check_up_down_total{proxy=\"be\",server=\"s2\"} 0.*"
expect resp.body ~ ".*haproxy_server_queue_limit{proxy=\"be\",server=\"s1\"} NaN.*"
expect resp.body ~ ".*haproxy_server_queue_limit{proxy=\"be\",server=\"s2\"} 10.*"
expect resp.body ~ ".*haproxy_server_limit_sessions{proxy=\"be\",server=\"s1\"} NaN.*"
expect resp.body ~ ".*haproxy_server_limit_sessions{proxy=\"be\",server=\"s2\"} 12.*"
expect resp.body ~ ".*haproxy_backend_downtime_seconds_total{proxy=\"stats\"} NaN.*"
expect resp.body ~ ".*haproxy_backend_downtime_seconds_total{proxy=\"be\"} 0.*"
expect resp.body ~ ".*haproxy_server_downtime_seconds_total{proxy=\"be\",server=\"s1\"} NaN.*"
expect resp.body ~ ".*haproxy_server_downtime_seconds_total{proxy=\"be\",server=\"s2\"} 0.*"
expect resp.body ~ ".*haproxy_server_current_throttle{proxy=\"be\",server=\"s1\"} NaN.*"
expect resp.body ~ ".*haproxy_server_idle_connections_limit{proxy=\"be\",server=\"s1\"} NaN.*"
expect resp.body ~ ".*haproxy_server_idle_connections_limit{proxy=\"be\",server=\"s2\"} 42.*"
# test well known labels presence
expect resp.body ~ ".*haproxy_process_build_info{version=\".*\"} 1.*"
expect resp.body ~ ".*haproxy_frontend_http_responses_total{proxy=\"stats\",code=\"4xx\"} 0.*"
expect resp.body ~ ".*haproxy_frontend_status{proxy=\"fe\",state=\"UP\"} 1.*"
expect resp.body ~ ".*haproxy_listener_status{proxy=\"stats\",listener=\"sock-1\",state=\"WAITING\"} 0.*"
expect resp.body ~ ".*haproxy_backend_status{proxy=\"be\",state=\"UP\"} 1.*"
expect resp.body ~ ".*haproxy_server_status{proxy=\"be\",server=\"s1\",state=\"DOWN\"} 0.*"
expect resp.body ~ ".*haproxy_server_check_status{proxy=\"be\",server=\"s2\",state=\"HANA\"} 0.*"
# test scope
txreq -url "/metrics?scope="
rxresp
expect resp.status == 200
expect resp.bodylen == 0
txreq -url "/metrics?scope=server"
rxresp
expect resp.status == 200
expect resp.body !~ ".*haproxy_process.*"
expect resp.body !~ ".*haproxy_frontend.*"
expect resp.body !~ ".*haproxy_listener.*"
expect resp.body !~ ".*haproxy_backend.*"
expect resp.body ~ ".*haproxy_server.*"
expect resp.body !~ ".*haproxy_sticktable.*"
txreq -url "/metrics?scope=frontend&scope=backend"
rxresp
expect resp.status == 200
expect resp.body !~ ".*haproxy_process.*"
expect resp.body ~ ".*haproxy_frontend.*"
expect resp.body !~ ".*haproxy_listener.*"
expect resp.body ~ ".*haproxy_backend.*"
expect resp.body !~ ".*haproxy_server.*"
expect resp.body !~ ".*haproxy_sticktable.*"
txreq -url "/metrics?scope"
rxresp
expect resp.status == 400
} -run