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Support 3xx HTTP status codes for health check

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Ondrej Flidr 2018-05-23 17:06:04 +02:00 committed by Traefiker Bot
parent c09febfffc
commit d6d795e286
3 changed files with 12 additions and 4 deletions
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4
docs/basics.md
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@ -454,12 +454,12 @@ The deprecated way:
#### Health Check
A health check can be configured in order to remove a backend from LB rotation as long as it keeps returning HTTP status codes other than `2xx` to HTTP GET requests periodically carried out by Traefik.
A health check can be configured in order to remove a backend from LB rotation as long as it keeps returning HTTP status codes other than `2xx` or `3xx` to HTTP GET requests periodically carried out by Traefik.
The check is defined by a path appended to the backend URL and an interval (given in a format understood by [time.ParseDuration](https://golang.org/pkg/time/#ParseDuration)) specifying how often the health check should be executed (the default being 30 seconds).
Each backend must respond to the health check within 5 seconds.
By default, the port of the backend server is used, however, this may be overridden.
A recovering backend returning `2xx` responses again is being returned to the LB rotation pool.
A recovering backend returning `2xx` or `3xx` responses again is being returned to the LB rotation pool.
For example:
```toml

4
healthcheck/healthcheck.go
View file

@ -203,8 +203,8 @@ func checkHealth(serverURL *url.URL, backend *BackendHealthCheck) error {
defer resp.Body.Close()
if resp.StatusCode < http.StatusOK || resp.StatusCode >= http.StatusMultipleChoices {
return fmt.Errorf("received non-2xx status code: %v", resp.StatusCode)
if resp.StatusCode < http.StatusOK || resp.StatusCode >= http.StatusBadRequest {
return fmt.Errorf("received error status code: %v", resp.StatusCode)
}
return nil

8
healthcheck/healthcheck_test.go
View file

@ -47,6 +47,14 @@ func TestSetBackendsConfiguration(t *testing.T) {
expectedNumUpsertedServers: 0,
expectedGaugeValue: 1,
},
{
desc: "healthy server staying healthy (StatusPermanentRedirect)",
startHealthy: true,
healthSequence: []int{http.StatusPermanentRedirect},
expectedNumRemovedServers: 0,
expectedNumUpsertedServers: 0,
expectedGaugeValue: 1,
},
{
desc: "healthy server becoming sick",
startHealthy: true,