diff options
Diffstat (limited to 'plugin')
| -rw-r--r-- | plugin/forward/README.md | 16 | ||||
| -rw-r--r-- | plugin/pkg/up/up.go | 4 |
2 files changed, 10 insertions, 10 deletions
diff --git a/plugin/forward/README.md b/plugin/forward/README.md index 02da91bcc..77d8e181e 100644 --- a/plugin/forward/README.md +++ b/plugin/forward/README.md @@ -9,14 +9,14 @@ The *forward* plugin re-uses already opened sockets to the upstreams. It supports UDP, TCP and DNS-over-TLS and uses in band health checking. -When it detects an error a health check is performed. This checks runs in a loop, -starting with a *0.5s* interval and exponentially backing off with randomized intervals -up to *60s* for as long as the upstream reports unhealthy. The exponential backoff -will reset to *0.5s* after 15 minutes. Once healthy we stop health checking (until the next -error). The health checks use a recursive DNS query (`. IN NS`) to get upstream health. Any response -that is not a network error (REFUSED, NOTIMPL, SERVFAIL, etc) is taken as a healthy upstream. The -health check uses the same protocol as specified in **TO**. If `max_fails` is set to 0, no checking -is performed and upstreams will always be considered healthy. +When it detects an error a health check is performed. This checks runs in a loop, starting with +a *0.5s* interval and exponentially backing off with randomized intervals up to *15s* for as long +as the upstream reports unhealthy. The exponential backoff will reset to *0.5s* after 2 minutes. +Once healthy we stop health checking (until the next error). The health checks use a recursive +DNS query (`. IN NS`) to get upstream health. Any response that is not a network error (REFUSED, +NOTIMPL, SERVFAIL, etc) is taken as a healthy upstream. The health check uses the same protocol as +specified in **TO**. If `max_fails` is set to 0, no checking is performed and upstreams will always +be considered healthy. When *all* upstreams are down it assumes health checking as a mechanism has failed and will try to connect to a random upstream (which may or may not work). diff --git a/plugin/pkg/up/up.go b/plugin/pkg/up/up.go index 71c128234..031c653b0 100644 --- a/plugin/pkg/up/up.go +++ b/plugin/pkg/up/up.go @@ -79,8 +79,8 @@ func (p *Probe) Start(interval time.Duration) { InitialInterval: interval, RandomizationFactor: backoff.DefaultRandomizationFactor, Multiplier: backoff.DefaultMultiplier, - MaxInterval: backoff.DefaultMaxInterval, - MaxElapsedTime: backoff.DefaultMaxElapsedTime, + MaxInterval: 15 * time.Second, + MaxElapsedTime: 2 * time.Minute, Stop: backoff.Stop, Clock: backoff.SystemClock, } |