ruler: add ability to remote_write directly

Add ability to use remote_write directly. This makes the component more
general and makes it possible to use it with Thanos.

Signed-off-by: Giedrius Statkevičius <[email protected]>

Author: GiedriusS

docs/configuration/config-file-reference.md

@@ -5027,12 +5027,19 @@ The `ruler_config` configures the Cortex ruler.
 # CLI flag: -ruler.frontend-address
 [frontend_address: <string> | default = ""]
 
+# Labels to ignore when restoring alert's state. This is only used if you are
+# using the frontend address with some external system like Thanos.
+[restore_ignore_labels: <list of string> | default = []]
+
 # [Experimental] Query response format to get query results from Query Frontend
 # when the rule evaluation. It will only take effect when
 # `-ruler.frontend-address` is configured. Supported values: json,protobuf
 # CLI flag: -ruler.query-response-format
 [query_response_format: <string> | default = "protobuf"]
 
+# What extra headers to send when evaluating rules.
+[frontend_extra_params: <map of string to string> | default = ]
+
 frontend_client:
   # gRPC client max receive message size (bytes).
   # CLI flag: -ruler.frontendClient.grpc-max-recv-msg-size
@@ -5113,6 +5120,9 @@ frontend_client:
 # Labels to add to all alerts.
 [external_labels: <map of string (labelName) to string (labelValue)> | default = []]
 
+# Labels to drop from all alerts.
+[drop_labels: <list of string> | default = []]
+
 ruler_client:
   # gRPC client max receive message size (bytes).
   # CLI flag: -ruler.client.grpc-max-recv-msg-size
@@ -5202,6 +5212,13 @@ ruler_client:
 # CLI flag: -ruler.rule-path
 [rule_path: <string> | default = "/rules"]
 
+remote_write:
+  # Where to remote write samples.
+  [url: <string> | default = ""]
+
+  # Extra headers to set when writing through remote_write.
+  [headers: <map of string to string> | default = ]
+
 # Comma-separated list of URL(s) of the Alertmanager(s) to send notifications
 # to. Each Alertmanager URL is treated as a separate group in the configuration.
 # Multiple Alertmanagers in HA per group can be supported by using DNS

go.mod

@@ -84,6 +84,7 @@ require (
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822
 	github.com/oklog/ulid/v2 v2.1.1
 	github.com/parquet-go/parquet-go v0.25.1
+	github.com/projectdiscovery/retryablehttp-go v1.0.119
 	github.com/prometheus-community/parquet-common v0.0.0-20250801093248-94ad2ac56fa4
 	github.com/prometheus/procfs v0.16.1
 	github.com/sercand/kuberesolver/v5 v5.1.1
@@ -110,6 +111,9 @@ require (
 	github.com/GoogleCloudPlatform/opentelemetry-operations-go/detectors/gcp v1.27.0 // indirect
 	github.com/GoogleCloudPlatform/opentelemetry-operations-go/exporter/metric v0.50.0 // indirect
 	github.com/GoogleCloudPlatform/opentelemetry-operations-go/internal/resourcemapping v0.52.0 // indirect
+	github.com/Mzack9999/gcache v0.0.0-20230410081825-519e28eab057 // indirect
+	github.com/Mzack9999/go-http-digest-auth-client v0.6.1-0.20220414142836-eb8883508809 // indirect
+	github.com/akrylysov/pogreb v0.10.1 // indirect
 	github.com/alecthomas/kingpin/v2 v2.4.0 // indirect
 	github.com/andybalholm/brotli v1.1.1 // indirect
 	github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2 // indirect
@@ -126,11 +130,13 @@ require (
 	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.30.1 // indirect
 	github.com/aws/aws-sdk-go-v2/service/sts v1.33.20 // indirect
 	github.com/aws/smithy-go v1.22.3 // indirect
+	github.com/aymerick/douceur v0.2.0 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/blang/semver/v4 v4.0.0 // indirect
 	github.com/caio/go-tdigest v3.1.0+incompatible // indirect
 	github.com/cenkalti/backoff/v4 v4.3.0 // indirect
 	github.com/cenkalti/backoff/v5 v5.0.2 // indirect
+	github.com/cloudflare/circl v1.6.1 // indirect
 	github.com/cncf/xds/go v0.0.0-20250501225837-2ac532fd4443 // indirect
 	github.com/coder/quartz v0.1.2 // indirect
 	github.com/coreos/go-semver v0.3.0 // indirect
@@ -140,6 +146,7 @@ require (
 	github.com/dennwc/varint v1.0.0 // indirect
 	github.com/dgryski/go-metro v0.0.0-20250106013310-edb8663e5e33 // indirect
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
+	github.com/dimchansky/utfbom v1.1.1 // indirect
 	github.com/docker/go-units v0.5.0 // indirect
 	github.com/edsrzf/mmap-go v1.2.0 // indirect
 	github.com/efficientgo/tools/extkingpin v0.0.0-20230505153745-6b7392939a60 // indirect
@@ -148,6 +155,7 @@ require (
 	github.com/fatih/color v1.18.0 // indirect
 	github.com/felixge/httpsnoop v1.0.4 // indirect
 	github.com/fsnotify/fsnotify v1.9.0 // indirect
+	github.com/gaissmai/bart v0.20.5 // indirect
 	github.com/go-chi/chi/v5 v5.0.7 // indirect
 	github.com/go-ini/ini v1.67.0 // indirect
 	github.com/go-jose/go-jose/v4 v4.0.5 // indirect
@@ -174,6 +182,7 @@ require (
 	github.com/google/s2a-go v0.1.9 // indirect
 	github.com/googleapis/enterprise-certificate-proxy v0.3.6 // indirect
 	github.com/googleapis/gax-go/v2 v2.14.2 // indirect
+	github.com/gorilla/css v1.0.1 // indirect
 	github.com/grpc-ecosystem/go-grpc-middleware/v2 v2.3.2 // indirect
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.26.3 // indirect
 	github.com/hashicorp/errwrap v1.1.0 // indirect
@@ -204,6 +213,7 @@ require (
 	github.com/mdlayher/socket v0.5.1 // indirect
 	github.com/mdlayher/vsock v1.2.1 // indirect
 	github.com/metalmatze/signal v0.0.0-20210307161603-1c9aa721a97a // indirect
+	github.com/microcosm-cc/bluemonday v1.0.27 // indirect
 	github.com/miekg/dns v1.1.66 // indirect
 	github.com/minio/crc64nvme v1.0.1 // indirect
 	github.com/minio/md5-simd v1.1.2 // indirect
@@ -225,15 +235,23 @@ require (
 	github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c // indirect
 	github.com/planetscale/vtprotobuf v0.6.1-0.20240319094008-0393e58bdf10 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
+	github.com/projectdiscovery/blackrock v0.0.1 // indirect
+	github.com/projectdiscovery/fastdialer v0.4.2 // indirect
+	github.com/projectdiscovery/hmap v0.0.91 // indirect
+	github.com/projectdiscovery/networkpolicy v0.1.18 // indirect
+	github.com/projectdiscovery/retryabledns v1.0.104 // indirect
+	github.com/projectdiscovery/utils v0.4.22 // indirect
 	github.com/prometheus-community/prom-label-proxy v0.11.1 // indirect
 	github.com/prometheus/exporter-toolkit v0.14.0 // indirect
 	github.com/prometheus/otlptranslator v0.0.0-20250620074007-94f535e0c588 // indirect
 	github.com/prometheus/sigv4 v0.2.0 // indirect
 	github.com/puzpuzpuz/xsync/v3 v3.5.1 // indirect
 	github.com/rantav/go-grpc-channelz v0.0.4 // indirect
 	github.com/redis/rueidis v1.0.61 // indirect
+	github.com/refraction-networking/utls v1.7.1 // indirect
 	github.com/rs/cors v1.11.1 // indirect
 	github.com/rs/xid v1.6.0 // indirect
+	github.com/saintfish/chardet v0.0.0-20230101081208-5e3ef4b5456d // indirect
 	github.com/sean-/seed v0.0.0-20170313163322-e2103e2c3529 // indirect
 	github.com/seiflotfy/cuckoofilter v0.0.0-20240715131351-a2f2c23f1771 // indirect
 	github.com/shurcooL/httpfs v0.0.0-20230704072500-f1e31cf0ba5c // indirect
@@ -242,14 +260,27 @@ require (
 	github.com/soheilhy/cmux v0.1.5 // indirect
 	github.com/spiffe/go-spiffe/v2 v2.5.0 // indirect
 	github.com/stretchr/objx v0.5.2 // indirect
+	github.com/syndtr/goleveldb v1.0.0 // indirect
+	github.com/tidwall/btree v1.4.3 // indirect
+	github.com/tidwall/buntdb v1.3.0 // indirect
+	github.com/tidwall/gjson v1.18.0 // indirect
+	github.com/tidwall/grect v0.1.4 // indirect
+	github.com/tidwall/match v1.1.1 // indirect
+	github.com/tidwall/pretty v1.2.1 // indirect
+	github.com/tidwall/rtred v0.1.2 // indirect
+	github.com/tidwall/tinyqueue v0.1.1 // indirect
 	github.com/tinylib/msgp v1.3.0 // indirect
 	github.com/trivago/tgo v1.0.7 // indirect
 	github.com/uber/jaeger-lib v2.4.1+incompatible // indirect
 	github.com/vimeo/galaxycache v1.3.1 // indirect
 	github.com/weaveworks/promrus v1.2.0 // indirect
+	github.com/weppos/publicsuffix-go v0.40.3-0.20250408071509-6074bbe7fd39 // indirect
 	github.com/xhit/go-str2duration/v2 v2.1.0 // indirect
 	github.com/yuin/gopher-lua v1.1.1 // indirect
 	github.com/zeebo/errs v1.4.0 // indirect
+	github.com/zmap/rc2 v0.0.0-20190804163417-abaa70531248 // indirect
+	github.com/zmap/zcrypto v0.0.0-20230422215203-9a665e1e9968 // indirect
+	go.etcd.io/bbolt v1.3.7 // indirect
 	go.mongodb.org/mongo-driver v1.17.4 // indirect
 	go.opencensus.io v0.24.0 // indirect
 	go.opentelemetry.io/auto/sdk v1.1.0 // indirect