Ruler: Change default evaluation interval to 1m (#5417)

* Change default eval interval to 1m

Signed-off-by: Matej Gera <matejgera@gmail.com>

* Update CHANGELOG

Signed-off-by: Matej Gera <matejgera@gmail.com>

CHANGELOG.md

@@ -23,6 +23,7 @@ We use *breaking :warning:* to mark changes that are not backward compatible (re
 ### Changed
 
 - [#5410](https://github.com/thanos-io/thanos/pull/5410) Query: Close() after using query. This should reduce bumps in memory allocations.
+- [#5417](https://github.com/thanos-io/thanos/pull/5417) Ruler: Change default evaluation interval to 1 minute.
 
 ### Removed
 

cmd/thanos/rule.go

@@ -125,7 +125,7 @@ func registerRule(app *extkingpin.App) {
 	cmd.Flag("resend-delay", "Minimum amount of time to wait before resending an alert to Alertmanager.").
 		Default("1m").DurationVar(&conf.resendDelay)
 	cmd.Flag("eval-interval", "The default evaluation interval to use.").
-		Default("30s").DurationVar(&conf.evalInterval)
+		Default("1m").DurationVar(&conf.evalInterval)
 
 	conf.rwConfig = extflag.RegisterPathOrContent(cmd, "remote-write.config", "YAML config for the remote-write configurations, that specify servers where samples should be sent to (see https://prometheus.io/docs/prometheus/latest/configuration/configuration/#remote_write). This automatically enables stateless mode for ruler and no series will be stored in the ruler's TSDB. If an empty config (or file) is provided, the flag is ignored and ruler is run with its own TSDB.", extflag.WithEnvSubstitution())
 

docs/components/rule.md

@@ -310,7 +310,7 @@ Flags:
                                  record's value. The URL path is used as a
                                  prefix for the regular Alertmanager API path.
       --data-dir="data/"         data directory
-      --eval-interval=30s        The default evaluation interval to use.
+      --eval-interval=1m         The default evaluation interval to use.
       --grpc-address="0.0.0.0:10901"
                                  Listen ip:port address for gRPC endpoints
                                  (StoreAPI). Make sure this address is routable