| ema added a comment. |
In T179156#3717847, @BBlack wrote:For future reference by another opsen who might be looking at this: one of the key metrics that identifies what we've been calling the "target cache" in eqiad, the one that will (eventually) have issues due to whatever bad traffic is currently mapped through it, is by looking at the connection counts to appservers.svc.eqiad.wmnet + api-appservers.svc.eqiad.wmnet on all the eqiad cache nodes.
I've just added a dashboard plotting per-backend connection count, which should be helpful to pinpoint the "target cache" (cp1054 in the example).
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Cc: ema, Gehel, Smalyshev, TerraCodes, Jay8g, Liuxinyu970226, Paladox, Zppix, Stashbot, gerritbot, thiemowmde, aude, Marostegui, Lucas_Werkmeister_WMDE, Legoktm, tstarling, awight, Ladsgroup, Lydia_Pintscher, ori, BBlack, demon, greg, Aklapper, hoo, Lahi, Lordiis, GoranSMilovanovic, Adik2382, Th3d3v1ls, Hfbn0, Ramalepe, Liugev6, QZanden, Lewizho99, Maathavan, Mkdw, Liudvikas, srodlund, Luke081515, Wikidata-bugs, ArielGlenn, faidon, zeljkofilipin, Alchimista, He7d3r, Mbch331, Rxy, fgiunchedi, mmodell
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