kuberxy opened a new issue #4741:
URL: https://github.com/apache/apisix/issues/4741
### Issue description
I get this error:
```
2021/08/02 18:32:42 [error] 25921#25921: *9160472 [lua] config_yaml.lua:202:
failed to check item data of [upstreams] err:property "checks" validation
failed: property "passive" validation failed: property "unhealthy" validation
failed: property "http_statuses" validation failed: failed to validate item 1:
wrong type: expected integer, got string ,val:
{"nodes":{"nginx3:8091":1,"nginx1:8091":1,"nginx2:8091":1},"id":1,"name":"nginx","checks":{"active":{"unhealthy":{"http_statuses":[429,404,500,501,502,503,504,505],"interval":1,"timeouts":3,"http_failures":2,"tcp_failures":2},"http_path":"\/","timeout":1,"type":"http","healthy":{"successes":1,"interval":2,"http_statuses":[200,302]},"https_verify_certificate":true,"concurrency":10},"passive":{"unhealthy":{"http_failures":3,"http_statuses":["500"],"tcp_failures":3},"healthy":{"successes":3,"http_statuses":["200","201"]}}},"type":"roundrobin"},
context: ngx.timer
```
This is my configuration:
```
upstreams:
-
id: 1
name: "nginx"
nodes:
"nginx1:8091": 1
"nginx2:8091": 1
"nginx3:8091": 1
type: roundrobin
checks:
active:
http_path: "/"
healthy:
interval: 2
successes: 1
unhealthy:
interval: 1
http_failures: 2
passive:
healthy:
http_statuses: [200, 201]
successes: 3
unhealthy:
http_statuses: [500]
http_failures: 3
tcp_failures: 3
routes:
-
uri: /*
upstream_id: 1
#END
```
### 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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