alert expression looks like this:
sum by (hostname, protocol, endpoint, cluster) (
label_replace(lvs_realserver_mss_value, "hostname", "$1", "instance", "(.*):.*")
)
/ ignoring (endpoint) group_left
sum by (hostname, protocol, cluster) (
label_replace(tcp_mss_clamper_mss_cfg{interface="lo"}, "hostname", "$1", "instance", "(.*):.*")
) != 1On ferm based hosts lvs_realserver_mss_value is still being reported as expected but tcp_mss_clamper_mss_cfg isn't
| Status | Subtype | Assigned | Task | ||
|---|---|---|---|---|---|
| Open | Vgutierrez | T332027 Replace current L4LB with with Katran-based alternative | |||
| Resolved | Vgutierrez | T365689 Provide a ferm based alternative to tcp-mss-clamper | |||
| Resolved | CDobbins | T367204 LVSRealserverMSS alert is broken for ferm based hosts |
Change #1062457 had a related patch set uploaded (by CDobbins; author: CDobbins):
[operations/puppet@production] prometheus: add script to check TCP MSS clamping value
Change #1082553 had a related patch set uploaded (by CDobbins; author: CDobbins):
[operations/puppet@production] prometheus: add script to check TCP MSS clamping value
Change #1082553 abandoned by CDobbins:
[operations/puppet@production] prometheus: add script to check TCP MSS clamping value
Reason:
created by mistake
Change #1062457 merged by CDobbins:
[operations/puppet@production] prometheus: add script to check TCP MSS clamping value
Change #1110843 had a related patch set uploaded (by CDobbins; author: CDobbins):
[operations/alerts@master] alerts: add alert for ferm_mss_cfg Prometheus metric
Change #1110843 merged by jenkins-bot:
[operations/alerts@master] alerts: add alert for ferm_mss_cfg Prometheus metric