[proxy] enable metrics for Caddy (#19877)

kylos101 · web-flow · commit c0cced2b4a33 · 2024-06-12T20:40:08.000+08:00
* [proxy] enable metrics for Caddy

 Presently we're only getting metrics for caddy_reverse_proxy_upstreams_healthy

* Exclude 502 from /_supervisor
diff --git a/components/proxy/conf/Caddyfile b/components/proxy/conf/Caddyfile
@@ -22,9 +22,18 @@
 
 	servers {
 		protocols h1 h2 h2c
+		metrics
 	}
 }
 
+# Define a matcher to exclude 502 errors on a specific path
+@exclude502 {
+    not {
+        path /_supervisor*
+        status 502
+    }
+}
+
 (compression) {
 	encode zstd gzip
 }
@@ -142,7 +151,7 @@
 
 # TODO: refactor once we can listen only in localhost
 :9545 {
-	metrics /metrics {
+	metrics /metrics @exclude502 {
 		disable_openmetrics
 	}
 }

Original file line number	Diff line number	Diff line change
`@@ -22,9 +22,18 @@`
`22`	`22`
`23`	`23`	`servers {`
`24`	`24`	`protocols h1 h2 h2c`
	`25`	`+ metrics`
`25`	`26`	`}`
`26`	`27`	`}`
`27`	`28`
	`29`	`+# Define a matcher to exclude 502 errors on a specific path`
	`30`	`+@exclude502 {`
	`31`	`+ not {`
	`32`	`+ path /_supervisor*`
	`33`	`+ status 502`
	`34`	`+ }`
	`35`	`+}`
	`36`	`+`
`28`	`37`	`(compression) {`
`29`	`38`	`encode zstd gzip`
`30`	`39`	`}`
`@@ -142,7 +151,7 @@`
`142`	`151`
`143`	`152`	`# TODO: refactor once we can listen only in localhost`
`144`	`153`	`:9545 {`
`145`		`- metrics /metrics {`
	`154`	`+ metrics /metrics @exclude502 {`
`146`	`155`	`disable_openmetrics`
`147`	`156`	`}`
`148`	`157`	`}`