Add logging when a name doesn't resolve

Use UDP instead of (single use) TCP connections
Update go and alpine
2022-11-22 16:12:17 -08:00 · 2022-11-22 16:11:58 -08:00 · 2022-11-19 11:42:07 -08:00 · 2022-11-19 11:41:17 -08:00 · 2022-11-19 11:41:15 -08:00 · 2022-11-19 11:37:57 -08:00
7 changed files with 221 additions and 104 deletions
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@ -0,0 +1,34 @@
+name: prometheus-dnssec-exporter
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+  schedule:
+    - cron: '12 0 * * *'
+
+jobs:
+
+  build:
+    name: Build and Test
+    runs-on: ubuntu-latest
+    steps:
+
+    - name: Set up Go 1.x
+      uses: actions/setup-go@v2
+      with:
+        go-version: ^1.13
+      id: go
+
+    - name: Check out the code
+      uses: actions/checkout@v2
+
+    - name: Get dependencies
+      run: go get -v -t -d ./...
+
+    - name: Build
+      run: go build -v .
+
+    - name: Test
+      run: go test -v .
--- a/4
+++ b/4
@ -1,10 +1,10 @@
-FROM golang:1.17-alpine AS build
+FROM golang:1.19.3-alpine AS build

 WORKDIR /app
 COPY . ./
 RUN go mod download
 RUN go build -o /bin/prometheus-dnssec-exporter

-FROM alpine:3.14.2
+FROM alpine:3.16.3
 COPY --from=build /bin/prometheus-dnssec-exporter /bin/prometheus-dnssec-exporter
 ENTRYPOINT [ "/bin/prometheus-dnssec-exporter" ]
--- a/README.md
+++ b/README.md
@ -30,6 +30,27 @@ Labels:
 * `record`
 * `type`

+If more than one resolver is configured, the metric will be calculated from the
+resolver that is configured first.  If more than one RRSIG covers the record,
+the number of days until the first one expires will be returned.  If the record
+is not signed of the signature cannot be validated, this metric will contain a
+bogus timestamp.
+
+### Gauge: `dnssec_zone_record_earliest_rrsig_expiry`
+
+Earliest expiring RRSIG covering the record on resolver in unixtime.
+
+Labels:
+
+* `resolver`
+* `zone`
+* `record`
+* `type`
+
+If more than one RRSIG covers the record, the expiration time returned will be
+of the one that expires earliest.  If the record does not resolve or cannot be
+validated, this metric will be absent.
+
 ### Gauge: `dnssec_zone_record_resolves`

 Does the record resolve using the specified DNSSEC enabled resolvers.
@ -41,6 +62,8 @@ Labels:
 * `record`
 * `type`

+This metric will return 1 only if the record resolves **and** validates.
+
 ### Examples

    # HELP dnssec_zone_record_days_left Number of days the signature will be valid
@ -53,6 +76,12 @@ Labels:
    dnssec_zone_record_resolves{record="@",resolver="1.1.1.1:53",type="SOA",zone="verisigninc.com"} 1
    dnssec_zone_record_resolves{record="@",resolver="8.8.8.8:53",type="SOA",zone="ietf.org"} 1
    dnssec_zone_record_resolves{record="@",resolver="8.8.8.8:53",type="SOA",zone="verisigninc.com"} 1
+    # HELP dnssec_zone_record_earliest_rrsig_expiry Earliest expiring RRSIG covering the record on resolver in unixtime
+    # TYPE dnssec_zone_record_earliest_rrsig_expiry gauge
+    dnssec_zone_record_earliest_rrsig_expiry{record="@",resolver="1.1.1.1:53",type="SOA",zone="ietf.org"} 1.664872679e+09
+    dnssec_zone_record_earliest_rrsig_expiry{record="@",resolver="1.1.1.1:53",type="SOA",zone="verisigninc.com"} 1.664778306e+09
+    dnssec_zone_record_earliest_rrsig_expiry{record="@",resolver="8.8.8.8:53",type="SOA",zone="ietf.org"} 1.664872679e+09
+    dnssec_zone_record_earliest_rrsig_expiry{record="@",resolver="8.8.8.8:53",type="SOA",zone="verisigninc.com"} 1.664778306e+09

 ## Configuration

--- a/go.mod
+++ b/go.mod
@ -1,18 +1,28 @@
 module go.askask.com/prometheus-dnssec-exporter

-go 1.16
+go 1.18

 require (
+	github.com/miekg/dns v1.1.50
+	github.com/naoina/toml v0.1.1
+	github.com/prometheus/client_golang v1.14.0
+)
+
+require (
+	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cespare/xxhash/v2 v2.1.2 // indirect
 	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/kylelemons/godebug v1.1.0 // indirect
-	github.com/miekg/dns v1.1.43
+	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
 	github.com/naoina/go-stringutil v0.1.0 // indirect
-	github.com/naoina/toml v0.1.1
-	github.com/prometheus/client_golang v1.11.0
-	github.com/prometheus/common v0.30.0 // indirect
-	github.com/prometheus/procfs v0.7.3 // indirect
-	golang.org/x/net v0.0.0-20210903162142-ad29c8ab022f // indirect
-	golang.org/x/sys v0.0.0-20210903071746-97244b99971b // indirect
-	google.golang.org/protobuf v1.27.1 // indirect
+	github.com/prometheus/client_model v0.3.0 // indirect
+	github.com/prometheus/common v0.37.0 // indirect
+	github.com/prometheus/procfs v0.8.0 // indirect
+	golang.org/x/crypto v0.0.0-20210921155107-089bfa567519 // indirect
+	golang.org/x/mod v0.7.0 // indirect
+	golang.org/x/net v0.2.0 // indirect
+	golang.org/x/sys v0.2.0 // indirect
+	golang.org/x/tools v0.3.0 // indirect
+	golang.org/x/xerrors v0.0.0-20220907171357-04be3eba64a2 // indirect
+	google.golang.org/protobuf v1.28.1 // indirect
 )
--- a/go.sum
+++ b/go.sum
@ -63,9 +63,11 @@ github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2
 github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-kit/log v0.1.0/go.mod h1:zbhenjAZHb184qTLMA9ZjW7ThYL0H2mk7Q6pNt4vbaY=
+github.com/go-kit/log v0.2.0/go.mod h1:NwTd00d/i8cPZ3xOwwiv2PO5MOcx78fFErGNcVmBjv0=
 github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
 github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
 github.com/go-logfmt/logfmt v0.5.0/go.mod h1:wCYkCAKZfumFQihp8CzCvQ3paCTfi41vtzG1KdI/P7A=
+github.com/go-logfmt/logfmt v0.5.1/go.mod h1:WYhtIu8zTZfxdn5+rREduYbwxfcBr/Vr6KEVveWlfTs=
 github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
@ -106,7 +108,6 @@ github.com/google/go-cmp v0.4.1/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.1/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/google/martian v2.1.0+incompatible/go.mod h1:9I4somxYTbIHy5NJKHRl3wXiIaQGbYVAs8BPL6v8lEs=
@ -128,6 +129,7 @@ github.com/jpillora/backoff v1.0.0/go.mod h1:J/6gKK9jxlEcS3zixgDgUAsiuZ7yrSoa/FX
 github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
 github.com/json-iterator/go v1.1.10/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
 github.com/json-iterator/go v1.1.11/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
+github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
 github.com/jstemmer/go-junit-report v0.0.0-20190106144839-af01ea7f8024/go.mod h1:6v2b51hI/fHJwM22ozAgKL4VKDeJcHhJFhtBdhmNjmU=
 github.com/jstemmer/go-junit-report v0.9.1/go.mod h1:Brl9GWCQeLvo8nXZwPNNblvFj/XSXhF0NWZEnDohbsk=
 github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w=
@ -139,16 +141,17 @@ github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFB
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
-github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0SNc=
 github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+fNqagV/RAw=
-github.com/matttproud/golang_protobuf_extensions v1.0.1 h1:4hp9jkHxhMHkqkrB3Ix0jegS5sx/RkqARlsWZ6pIwiU=
 github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
-github.com/miekg/dns v1.1.43 h1:JKfpVSCB84vrAmHzyrsxB5NAr5kLoMXZArPSw7Qlgyg=
-github.com/miekg/dns v1.1.43/go.mod h1:+evo5L0630/F6ca/Z9+GAqzhjGyn8/c+TBaOyfEl0V4=
+github.com/matttproud/golang_protobuf_extensions v1.0.4 h1:mmDVorXM7PCGKw94cs5zkfA9PSy5pEvNWRP0ET0TIVo=
+github.com/matttproud/golang_protobuf_extensions v1.0.4/go.mod h1:BSXmuO+STAnVfrANrmjBb36TMTDstsz7MSK+HVaYKv4=
+github.com/miekg/dns v1.1.50 h1:DQUfb9uc6smULcREF09Uc+/Gd46YWqJd5DbpPE9xkcA=
+github.com/miekg/dns v1.1.50/go.mod h1:e3IlAVfNqAllflbibAZEWOXOQ+Ynzk/dDozDxY7XnME=
 github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
 github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
 github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
+github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk=
 github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/naoina/go-stringutil v0.1.0 h1:rCUeRUHjBjGTSHl0VC00jUPLz8/F9dDzYI70Hzifhks=
@ -162,24 +165,29 @@ github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZN
 github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
 github.com/prometheus/client_golang v1.0.0/go.mod h1:db9x61etRT2tGnBNRi70OPL5FsnadC4Ky3P0J6CfImo=
 github.com/prometheus/client_golang v1.7.1/go.mod h1:PY5Wy2awLA44sXw4AOSfFBetzPP4j5+D6mVACh+pe2M=
-github.com/prometheus/client_golang v1.11.0 h1:HNkLOAEQMIDv/K+04rukrLx6ch7msSRwf3/SASFAGtQ=
 github.com/prometheus/client_golang v1.11.0/go.mod h1:Z6t4BnS23TR94PD6BsDNk8yVqroYurpAkEiz0P2BEV0=
+github.com/prometheus/client_golang v1.12.1/go.mod h1:3Z9XVyYiZYEO+YQWt3RD2R3jrbd179Rt297l4aS6nDY=
+github.com/prometheus/client_golang v1.14.0 h1:nJdhIvne2eSX/XRAFV9PcvFFRbrjbcTUj0VP62TMhnw=
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 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
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-github.com/prometheus/procfs v0.7.3 h1:4jVXhlkAyzOScmCkXBTOLRLTz8EeU+eyjrwB/EPq0VU=
 github.com/prometheus/procfs v0.7.3/go.mod h1:cz+aTbrPOrUb4q7XlbU9ygM+/jj0fzG6c1xBZuNvfVA=
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@ -192,6 +200,7 @@ github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81P
 github.com/yuin/goldmark v1.1.25/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.1.32/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
+github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
 go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
 go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8=
 go.opencensus.io v0.22.2/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
@ -203,6 +212,7 @@ golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8U
 golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190510132918-efd6b22b2522/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=
@ -233,6 +243,9 @@ golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzB
 golang.org/x/mod v0.1.1-0.20191107180719-034126e5016b/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
 golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
+golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
+golang.org/x/mod v0.7.0 h1:LapD9S96VoQRhi/GrNTqeBJFrUjs5UHCAtTlgwA5oZA=
+golang.org/x/mod v0.7.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@ -261,16 +274,20 @@ golang.org/x/net v0.0.0-20200520182314-0ba52f642ac2/go.mod h1:qpuaurCH72eLCgpAm/
 golang.org/x/net v0.0.0-20200625001655-4c5254603344/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
 golang.org/x/net v0.0.0-20200707034311-ab3426394381/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
 golang.org/x/net v0.0.0-20200822124328-c89045814202/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
-golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
 golang.org/x/net v0.0.0-20210525063256-abc453219eb5/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/net v0.0.0-20210903162142-ad29c8ab022f h1:w6wWR0H+nyVpbSAQbzVEIACVyr/h8l/BEkY6Sokc7Eg=
-golang.org/x/net v0.0.0-20210903162142-ad29c8ab022f/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.0.0-20210726213435-c6fcb2dbf985/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.0.0-20220127200216-cd36cc0744dd/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk=
+golang.org/x/net v0.0.0-20220225172249-27dd8689420f/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk=
+golang.org/x/net v0.2.0 h1:sZfSu1wtKLGlWI4ZZayP0ck9Y73K1ynO6gqzTdBVdPU=
+golang.org/x/net v0.2.0/go.mod h1:KqCZLdyyvdV855qA2rE3GC2aiw5xGR5TEjj8smXukLY=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20191202225959-858c2ad4c8b6/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20210514164344-f6687ab2804c/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
+golang.org/x/oauth2 v0.0.0-20220223155221-ee480838109b/go.mod h1:DAh4E804XQdzx2j+YRIaUnCqCV2RuMz24cGBJ5QYIrc=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@ -280,7 +297,6 @@ golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201207232520-09787c993a3a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20210220032951-036812b2e83c h1:5KslGYwFpkhGh+Q16bwMP3cOontH8FOep7tGV86Y7SQ=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@ -315,18 +331,25 @@ golang.org/x/sys v0.0.0-20200625212154-ddb9806d33ae/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20200803210538-64077c9b5642/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210303074136-134d130e1a04/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210603081109-ebe580a85c40/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20210903071746-97244b99971b h1:3Dq0eVHn0uaQJmPO+/aYPI/fRMqdrVDbu7MQcku54gg=
-golang.org/x/sys v0.0.0-20210903071746-97244b99971b/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220114195835-da31bd327af9/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.2.0 h1:ljd4t30dBnAvMZaQCevtY0xLLD0A+bRZXbgLMLU1F/A=
+golang.org/x/sys v0.2.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
@ -370,11 +393,14 @@ golang.org/x/tools v0.0.0-20200618134242-20370b0cb4b2/go.mod h1:EkVYQZoAsY45+roY
 golang.org/x/tools v0.0.0-20200729194436-6467de6f59a7/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
 golang.org/x/tools v0.0.0-20200804011535-6c149bb5ef0d/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
 golang.org/x/tools v0.0.0-20200825202427-b303f430e36d/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
+golang.org/x/tools v0.1.6-0.20210726203631-07bc1bf47fb2/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
+golang.org/x/tools v0.3.0 h1:SrNbZl6ECOS1qFzgTdQfWXZM9XBkiA6tkFrH9YSTPHM=
+golang.org/x/tools v0.3.0/go.mod h1:/rWhSS2+zyEVwoJf8YAX6L2f0ntZ7Kn/mGgAWcipA5k=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20220907171357-04be3eba64a2/go.mod h1:K8+ghG5WaK9qNqU5K3HdILfMLy1f3aNYFI/wnl100a8=
 google.golang.org/api v0.4.0/go.mod h1:8k5glujaEP+g9n7WNsDg8QP6cUVNI86fCNMcbazEtwE=
 google.golang.org/api v0.7.0/go.mod h1:WtwebWUNSVBH/HAw79HIFXZNqEvBhG+Ra+ax0hx3E3M=
 google.golang.org/api v0.8.0/go.mod h1:o4eAsZoiT+ibD93RtjEohWalFOjRDx6CVaqeizhEnKg=
@ -450,8 +476,8 @@ google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGj
 google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
-google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+RurQ=
-google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+google.golang.org/protobuf v1.28.1 h1:d0NfwRgPtno5B1Wa6L2DAG+KivqkdutMf1UhdNx175w=
+google.golang.org/protobuf v1.28.1/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
--- a/main.go
+++ b/main.go
@ -37,6 +37,7 @@ type Exporter struct {

 	records  *prometheus.GaugeVec
 	resolves *prometheus.GaugeVec
+	expiry   *prometheus.GaugeVec

 	resolvers []string
 	dnsClient *dns.Client
@ -73,8 +74,22 @@ func NewDNSSECExporter(timeout time.Duration, resolvers []string, logger Logger)
 				"type",
 			},
 		),
+		expiry: prometheus.NewGaugeVec(
+			prometheus.GaugeOpts{
+				Namespace: "dnssec",
+				Subsystem: "zone",
+				Name:      "record_earliest_rrsig_expiry",
+				Help:      "Earliest expiring RRSIG covering the record on resolver in unixtime",
+			},
+			[]string{
+				"resolver",
+				"zone",
+				"record",
+				"type",
+			},
+		),
 		dnsClient: &dns.Client{
-			Net:     "tcp",
+			// Net:     "tcp",
 			Timeout: timeout,
 		},
 		resolvers: resolvers,
@ -85,32 +100,19 @@ func NewDNSSECExporter(timeout time.Duration, resolvers []string, logger Logger)
 func (e *Exporter) Describe(ch chan<- *prometheus.Desc) {
 	e.records.Describe(ch)
 	e.resolves.Describe(ch)
+	e.expiry.Describe(ch)
 }

 func (e *Exporter) Collect(ch chan<- prometheus.Metric) {

 	var wg sync.WaitGroup

-	wg.Add(len(e.Records) * (len(e.resolvers) + 1))
+	wg.Add(len(e.Records) * (len(e.resolvers)))

 	for _, rec := range e.Records {

 		rec := rec

-		// Check the expiration
-
-		go func() {
-
-			exp := e.expiration(rec.Zone, rec.Record, rec.Type)
-
-			e.records.WithLabelValues(
-				rec.Zone, rec.Record, rec.Type,
-			).Set(float64(time.Until(exp)/time.Hour) / 24)
-
-			wg.Done()
-
-		}()
-
 		// Check the configured resolvers

 		for _, resolver := range e.resolvers {
@ -119,12 +121,29 @@ func (e *Exporter) Collect(ch chan<- prometheus.Metric) {

 			go func() {

-				resolves := e.resolve(rec.Zone, rec.Record, rec.Type, resolver)
+				resolves, expires := e.resolve(rec.Zone, rec.Record, rec.Type, resolver)

 				e.resolves.WithLabelValues(
 					resolver, rec.Zone, rec.Record, rec.Type,
 				).Set(map[bool]float64{true: 1}[resolves])

+				// Only return the signature expiry if the record resolves.
+				if resolves {
+					e.expiry.WithLabelValues(
+						resolver, rec.Zone, rec.Record, rec.Type,
+					).Set(float64(expires.Unix()))
+				}
+
+				// For compatibility with historical behaviour, record_days_left
+				// returns the time until the earliest RRSIG expiration on the
+				// first configured resolver.  This value will be bogus if that
+				// resolver fails to resolve and validate the record.
+				if (resolver == e.resolvers[0]) {
+					e.records.WithLabelValues(
+						rec.Zone, rec.Record, rec.Type,
+					).Set(float64(time.Until(expires)/time.Hour) / 24)
+				}
+
 				wg.Done()

 			}()
@ -137,49 +156,11 @@ func (e *Exporter) Collect(ch chan<- prometheus.Metric) {

 	e.records.Collect(ch)
 	e.resolves.Collect(ch)
+	e.expiry.Collect(ch)

 }

-func (e *Exporter) expiration(zone, record, recordType string) (exp time.Time) {
-
-	msg := &dns.Msg{}
-	msg.SetQuestion(hostname(zone, record), dns.TypeRRSIG)
-
-	response, _, err := e.dnsClient.Exchange(msg, e.resolvers[0])
-	if err != nil {
-		e.logger.Printf("while looking up RRSIG for %v: %v", hostname(zone, record), err)
-		return
-	}
-
-	var sig *dns.RRSIG
-
-	for _, rr := range response.Answer {
-
-		if rrsig, ok := rr.(*dns.RRSIG); ok &&
-			rrsig.TypeCovered == dns.StringToType[recordType] {
-
-			sig = rrsig
-			break
-
-		}
-	}
-
-	if sig == nil {
-		e.logger.Printf("didn't find RRSIG for %v covering type %v matching a tag of a DNSKEY", hostname(zone, record), recordType)
-		return
-	}
-
-	exp = time.Unix(int64(sig.Expiration), 0)
-	if exp.IsZero() {
-		e.logger.Printf("zero exp for RRSIG for %v covering type %v", hostname(zone, record), recordType)
-		return
-	}
-
-	return
-
-}
-
-func (e *Exporter) resolve(zone, record, recordType, resolver string) (resolves bool) {
+func (e *Exporter) resolve(zone, record, recordType, resolver string) (resolves bool, expires time.Time) {

 	msg := &dns.Msg{}
 	msg.SetQuestion(hostname(zone, record), dns.StringToType[recordType])
@ -187,14 +168,31 @@ func (e *Exporter) resolve(zone, record, recordType, resolver string) (resolves

 	response, _, err := e.dnsClient.Exchange(msg, resolver)
 	if err != nil {
-		e.logger.Printf("while resolving for %v: %v", hostname(zone, record), err)
+		e.logger.Printf("error resolving %v %v on %v: %v", hostname(zone, record), recordType, resolver, err)
 		return
 	}

-	return response.AuthenticatedData &&
+	resolves = response.AuthenticatedData &&
 		!response.CheckingDisabled &&
 		response.Rcode == dns.RcodeSuccess

+	if !resolves {
+		log.Printf("%s AuthenticatedData: %t", hostname(zone, record), response.AuthenticatedData)
+		log.Printf("%s CheckingDisabled:  %t", hostname(zone, record), response.AuthenticatedData)
+		log.Printf("%s RcodeSuccess    :  %s", hostname(zone, record), dns.RcodeToString[response.Rcode])
+	}
+
+	// If multiple RRSIGs cover our record, return the one that will expire the earliest.
+	for _, rr := range response.Answer {
+		if rrsig, ok := rr.(*dns.RRSIG); ok {
+			sigexp := time.Unix(int64(rrsig.Expiration), 0)
+			if (expires.IsZero() || sigexp.Before(expires) && !sigexp.IsZero()) {
+				expires = sigexp;
+			}
+		}
+	}
+
+	return
 }

 func hostname(zone, record string) string {
--- a/main_test.go
+++ b/main_test.go
@ -16,6 +16,7 @@ type opts struct {
 	expires         time.Time
 	rcode           int
 	unauthenticated bool
+	noedns0support  bool
 }

 func nullLogger() *log.Logger {
@ -66,7 +67,7 @@ func runServer(t *testing.T, opts opts) ([]string, func()) {

 		switch q.Qtype {

-		case dns.TypeRRSIG:
+		case dns.TypeSOA:

 			rrHeader := dns.RR_Header{
 				Name:   q.Name,
@ -74,8 +75,13 @@ func runServer(t *testing.T, opts opts) ([]string, func()) {
 				Class:  dns.ClassINET,
 				Ttl:    3600,
 			}
+			msg.Answer = append(msg.Answer, soa)

-			answer := &dns.RRSIG{
+			if opts.noedns0support {
+				break
+			}
+
+			rrsig := &dns.RRSIG{
 				Hdr:         rrHeader,
 				TypeCovered: dns.TypeSOA,
 				Algorithm:   dnskey.Algorithm,
@ -87,19 +93,15 @@ func runServer(t *testing.T, opts opts) ([]string, func()) {
 				SignerName:  q.Name,
 			}

-			if err := answer.Sign(privkey.(*ecdsa.PrivateKey), []dns.RR{soa}); err != nil {
+			if err := rrsig.Sign(privkey.(*ecdsa.PrivateKey), []dns.RR{soa}); err != nil {
 				t.Fatalf("couldn't sign SOA record: %v", err)
 			}

-			msg.Answer = append(msg.Answer, answer)
-
-		case dns.TypeSOA:
-
-			msg.Answer = append(msg.Answer, soa)
+			msg.Answer = append(msg.Answer, rrsig)

 		}

-		msg.AuthenticatedData = !opts.unauthenticated
+		msg.AuthenticatedData = !opts.unauthenticated && !opts.noedns0support
 		msg.Rcode = opts.rcode

 		rw.WriteMsg(msg)
@ -141,7 +143,7 @@ func TestExpirationOK(t *testing.T) {

 	e := NewDNSSECExporter(time.Second, addr, nullLogger())

-	exp := e.expiration("example.org", "@", "SOA")
+	_, exp := e.resolve("example.org", "@", "SOA", addr[0])

 	if exp.Before(time.Now()) {
 		t.Fatalf("expected expiration to be in the future, was: %v", exp)
@ -160,7 +162,7 @@ func TestExpired(t *testing.T) {

 	e := NewDNSSECExporter(time.Second, addr, nullLogger())

-	exp := e.expiration("example.org", "@", "SOA")
+	_, exp := e.resolve("example.org", "@", "SOA", addr[0])

 	if exp.After(time.Now()) {
 		t.Fatalf("expected expiration to be in the past, was: %v", exp)
@ -179,7 +181,7 @@ func TestValid(t *testing.T) {

 	e := NewDNSSECExporter(time.Second, addr, nullLogger())

-	valid := e.resolve("example.org", "@", "SOA", addr[0])
+	valid, _ := e.resolve("example.org", "@", "SOA", addr[0])

 	if !valid {
 		t.Fatal("expected valid result")
@ -197,7 +199,7 @@ func TestInvalidError(t *testing.T) {

 	e := NewDNSSECExporter(time.Second, addr, nullLogger())

-	valid := e.resolve("example.org", "@", "SOA", addr[0])
+	valid, _ := e.resolve("example.org", "@", "SOA", addr[0])

 	if valid {
 		t.Fatal("expected invalid result")
@ -215,7 +217,25 @@ func TestInvalidUnauthenticated(t *testing.T) {

 	e := NewDNSSECExporter(time.Second, addr, nullLogger())

-	valid := e.resolve("example.org", "@", "SOA", addr[0])
+	valid, _ := e.resolve("example.org", "@", "SOA", addr[0])
+
+	if valid {
+		t.Fatal("expected invalid result")
+	}
+
+}
+
+func TestNoEDNS0Support(t *testing.T) {
+
+	addr, cancel := runServer(t, opts{
+		noedns0support: true,
+	})
+
+	defer cancel()
+
+	e := NewDNSSECExporter(time.Second, addr, nullLogger())
+
+	valid, _ := e.resolve("example.org", "@", "SOA", addr[0])

 	if valid {
 		t.Fatal("expected invalid result")
Author	SHA1	Message	Date
Ask Bjørn Hansen	01b6006a15	Add logging when a name doesn't resolve All checks were successful continuous-integration/drone/push Build is passing Details	2022-11-22 16:12:17 -08:00
Ask Bjørn Hansen	938aff52f7	Use UDP instead of (single use) TCP connections	2022-11-22 16:11:58 -08:00
Ask Bjørn Hansen	0ac0bdb1ab	Update go and alpine All checks were successful continuous-integration/drone/push Build is passing Details	2022-11-19 11:42:07 -08:00
Ask Bjørn Hansen	ad5eef7ef8	Use multi-stage build to get a small docker image	2022-11-19 11:41:17 -08:00
Ask Bjørn Hansen	cfd126731a	Update dependencies	2022-11-19 11:41:15 -08:00
Ask Bjørn Hansen	5c8fc2a3c5	Build with drone	2022-11-19 11:37:57 -08:00
Christian Joergensen	f6fd07b159	Updated github workflow. (#6 )	2022-10-05 06:36:08 -04:00
Philip Paeps	33d7d1aacf	Improve collection of RRSIG expiration times (#3 ) * Improve collection of RRSIG expiration times A new record_earliest_rrsig_expiry metric contains the unixtime of the earliest expiring signature per resolver. This allows for different alerting configurations when monitoring a mix of authoritative and caching resolvers. Use a single DNS query instead of querying for RRSIG separately. While some resolvers (reasonably enough) return REFUSED when queried for type RRSIG, they will include relevant RRSIG records when queried for other types (as required by RFC 4034). * Document the improved RRSIG expiration handling While here, also clarify the limitations of the record_days_left metric.	2022-09-24 19:52:08 -04:00
Christian Joergensen	ad1185ef55	Update DNS dependency. (#5 )	2022-09-24 19:47:45 -04:00
Christian Joergensen	e22c0162b3	Adding go workflow. (#4 )	2022-09-24 19:42:14 -04:00