Yiyiyimu opened a new issue #3561:
URL: https://github.com/apache/apisix/issues/3561
### Issue description
Test failed in CI.
```
Error: led test 'TEST 45: set route with key-auth enabled for consumer
metrics - pattern "[error]" should not match any line in error.log but matches
line "2021/02/08 13:52:26 [error] 21196#21196: *3795 [lua] config_yaml.lua:66:
failed to fetch /home/runner/work/apisix/apisix/t/servroot/conf/apisix.yaml
attributes: cannot obtain information from file
'/home/runner/work/apisix/apisix/t/servroot/conf/apisix.yaml': No such file or
directory, context: ngx.timer" (req 0)
# 2021/02/08 13:52:26 [error] 21195#21195: *3798 [lua] config_yaml.lua:66:
failed to fetch /home/runner/work/apisix/apisix/t/servroot/conf/apisix.yaml
attributes: cannot obtain information from file
'/home/runner/work/apisix/apisix/t/servroot/conf/apisix.yaml': No such file or
directory, context: ngx.timer
# 2021/02/08 13:52:26 [info] 21253#21253: *3781 [lua] plugin.lua:547:
checker(): check plugin schema, name: prometheus, configurations: {}, context:
ngx.timer
# 2021/02/08 13:52:26 [info] 21253#21253: *3781 [lua] service.lua:88:
filter(): filter service:
{"value":{"update_time":1612792326,"plugins":{"prometheus":{}},"upstream":{"parent":{"value":"table:
0x7f0dbfc7bc90","clean_handlers":{},"modifiedIndex":8392,"has_domain":false,"key":"\/apisix\/services\/1","createdIndex":8392},"type":"roundrobin","hash_on":"vars","scheme":"http","nodes":[{"host":"127.0.0.1","port":1980,"weight":1}],"pass_host":"pass"},"id":"1","create_time":1612792326},"clean_handlers":"table:
0x7f0dbf867e98","modifiedIndex":8392,"has_domain":false,"key":"\/apisix\/services\/1","createdIndex":8392},
context: ngx.timer
# 2021/02/08 13:52:26 [info] 21253#21253: *3779 [lua] plugin.lua:547:
checker(): check plugin schema, name: prometheus, configurations: {}, context:
ngx.timer
# 2021/02/08 13:52:26 [info] 21253#21253: *3783 [lua] v3.lua:34:
_request_uri(): v3 request uri: http://127.0.0.1:2379/v3/kv/put, timeout: 30,
context: ngx.timer
# 2021/02/08 13:52:26 [info] 21253#21253: *3775 [lua] v3.lua:563:
request_chunk(): http request method: POST path: /v3/watch body:
{"create_request":{"range_end":"L2FwaXNpeC9yb3V0ZXQ=","start_revision":8459,"key":"L2FwaXNpeC9yb3V0ZXM="}}
query: nil, context: ngx.timer
# 2021/02/08 13:52:26 [info] 21253#21253: *3789 [lua] v3.lua:563:
request_chunk(): http request method: POST path: /v3/watch body:
{"create_request":{"range_end":"L2FwaXNpeC9jb25zdW1lcnQ=","start_revision":8459,"key":"L2FwaXNpeC9jb25zdW1lcnM="}}
query: nil, context: ngx.timer
# 2021/02/08 13:52:26 [info] 21253#21253: *3787 [lua] v3.lua:563:
request_chunk(): http request method: POST path: /v3/watch body:
{"create_request":{"range_end":"L2FwaXNpeC9wbHVnaW5fbWV0YWRhdGI=","start_revision":8459,"key":"L2FwaXNpeC9wbHVnaW5fbWV0YWRhdGE="}}
query: nil, context: ngx.timer
# 2021/02/08 13:52:26 [info] 21253#21253: *3777 [lua] v3.lua:563:
request_chunk(): http request method: POST path: /v3/watch body:
{"create_request":{"range_end":"L2FwaXNpeC9zc20=","start_revision":8459,"key":"L2FwaXNpeC9zc2w="}}
query: nil, context: ngx.timer
# '
# at /home/runner/work/apisix/apisix/test-nginx/lib/Test/Nginx/Socket.pm
line 1280.
```
### Environment
* apisix version (cmd: `apisix version`): master
* OS (cmd: `uname -a`): ubunt-18.04
* OpenResty / Nginx version (cmd: `nginx -V` or `openresty -V`): 1.15
* etcd version, if have (cmd: run `curl
http://127.0.0.1:9090/v1/server_info` to get the info from server-info API):
* apisix-dashboard version, if have:
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