kuberxy opened a new issue #4649:
URL: https://github.com/apache/apisix/issues/4649
### Issue description
What is the difference between an active health check and a passive health
check that you implement? Is there a detailed documentation?
The following is my uptream configuration:
```
$ cat apisix.yaml
upstreams:
-
id: 1
name: "nginx"
nodes:
"nginx1:8080": 1
"nginx2:8080": 1
"nginx3:8080": 1
type: roundrobin
checks:
active:
http_path: "/web.healthy"
healthy:
interval: 2
successes: 1
-
id: 2
name: "tomcat"
nodes:
"tomcat1:8081": 1
"tomcat2:8081": 1
"tomcat3:8081": 1
type: roundrobin
checks:
active:
http_path: "/app.healthy"
healthy:
interval: 2
successes: 1
routes:
-
uri: /*
vars:
-
- uri
- ~*
- .(jpg|gif|png|css|js|html|ico|ttf)$
upstream_id: 1
-
uri: /*
upstream_id: 2
#END
```
With this configuration, requests are forwarded to unhealthy nodes when the
backend node network does not work.
Do both active and passive checks have to exist?
### Environment
* apisix version (cmd: `apisix version`): 2.3
* OS (cmd: `uname -a`): 4.15.0-111-generic Ubuntu 18.04
* OpenResty / Nginx version (cmd: `nginx -V` or `openresty -V`):
openresty/1.15.8.3
* etcd version, if have (cmd: run `curl
http://127.0.0.1:9090/v1/server_info` to get the info from server-info API):
Stand-Alone
* apisix-dashboard version, if have: not have
* luarocks version, if the issue is about installation (cmd: `luarocks
--version`): 2.4.2
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