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Fix forward metrics for backwards compatibility (#6178)

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Pat Downey
2023-07-04 15:35:55 +01:00
committed by GitHub
parent 6e1263d3d9
commit ea293da1d6
14 changed files with 87 additions and 78 deletions
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plugin/forward/README.md
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@@ -115,20 +115,28 @@ plugin is also enabled:
If monitoring is enabled (via the *prometheus* plugin) then the following metric are exported:
* `coredns_forward_requests_total{to}` - query count per upstream.
* `coredns_forward_responses_total{to}` - Counter of responses received per upstream.
* `coredns_forward_request_duration_seconds{to, rcode, type}` - duration per upstream, RCODE, type
* `coredns_forward_responses_total{to, rcode}` - count of RCODEs per upstream.
* `coredns_forward_healthcheck_failures_total{to}` - number of failed health checks per upstream.
* `coredns_forward_healthcheck_broken_total{}` - counter of when all upstreams are unhealthy,
* `coredns_forward_healthcheck_broken_total{}` - count of when all upstreams are unhealthy,
and we are randomly (this always uses the `random` policy) spraying to an upstream.
* `coredns_forward_max_concurrent_rejects_total{}` - counter of the number of queries rejected because the
* `coredns_forward_max_concurrent_rejects_total{}` - count of queries rejected because the
number of concurrent queries were at maximum.
* `coredns_forward_conn_cache_hits_total{to, proto}` - counter of connection cache hits per upstream and protocol.
* `coredns_forward_conn_cache_misses_total{to, proto}` - counter of connection cache misses per upstream and protocol.
* `coredns_proxy_request_duration_seconds{proxy_name="forward", to, rcode}` - histogram per upstream, RCODE
* `coredns_proxy_healthcheck_failures_total{proxy_name="forward", to, rcode}`- count of failed health checks per upstream.
* `coredns_proxy_conn_cache_hits_total{proxy_name="forward", to, proto}`- count of connection cache hits per upstream and protocol.
* `coredns_proxy_conn_cache_misses_total{proxy_name="forward", to, proto}` - count of connection cache misses per upstream and protocol.
Where `to` is one of the upstream servers (**TO** from the config), `rcode` is the returned RCODE
from the upstream, `proto` is the transport protocol like `udp`, `tcp`, `tcp-tls`.
The following metrics have recently been deprecated:
* `coredns_forward_healthcheck_failures_total{to, rcode}`
* Can be replaced with `coredns_proxy_healthcheck_failures_total{proxy_name="forward", to, rcode}`
* `coredns_forward_requests_total{to}`
* Can be replaced with `sum(coredns_proxy_request_duration_seconds_count{proxy_name="forward", to})`
* `coredns_forward_responses_total{to, rcode}`
* Can be replaced with `coredns_proxy_request_duration_seconds_count{proxy_name="forward", to, rcode}`
* `coredns_forward_request_duration_seconds{to, rcode}`
* Can be replaced with `coredns_proxy_request_duration_seconds{proxy_name="forward", to, rcode}`
## Examples
Proxy all requests within `example.org.` to a nameserver running on a different port: