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Posted to notifications@apisix.apache.org by GitBox <gi...@apache.org> on 2022/12/22 15:30:09 UTC
[GitHub] [apisix] caibirdme opened a new issue, #8554: bug: discovery/dns cause panic
caibirdme opened a new issue, #8554:
URL: https://github.com/apache/apisix/issues/8554
### Current Behavior
1. config dns dicovery in config.yaml:
```yaml
discovery:
dns:
servers:
- 9.166.239.254:53 # k8s coredns svc
```
2. config tcp proxy:
```yaml
stream_routes:
- server_port: 10000
upstream:
service_name: app-service.namespace:8081
scheme: tcp
discovery_type: dns
type: roundrobin
```
3. send request to xxx:10000
4. apisix aborted with log:
```
2022-12-22T15:07:02.512209987Z 2022/12/22 23:07:02 [error] 56#56: *91098 lua entry thread aborted: runtime error: /usr/local/apisix/apisix/discovery/dns/init.lua:32: attempt to index upvalue 'dns_client' (a nil value)
2022-12-22T15:07:02.512250920Z stack traceback:
2022-12-22T15:07:02.512256678Z coroutine 0:
2022-12-22T15:07:02.512259872Z /usr/local/apisix/apisix/discovery/dns/init.lua: in function 'nodes'
2022-12-22T15:07:02.512263539Z /usr/local/apisix/apisix/upstream.lua:259: in function 'set_upstream'
2022-12-22T15:07:02.512266986Z /usr/local/apisix/apisix/init.lua:959: in function 'stream_preread_phase'
2022-12-22T15:07:02.512270259Z preread_by_lua(nginx.conf:90):2: in main chunk while prereading client data, client: 9.166.233.109, server: 0.0.0.0:10000
```
### Expected Behavior
proxy request to desired k8s service
### Error Logs
2022-12-22T15:07:02.512209987Z 2022/12/22 23:07:02 [error] 56#56: *91098 lua entry thread aborted: runtime error: /usr/local/apisix/apisix/discovery/dns/init.lua:32: attempt to index upvalue 'dns_client' (a nil value)
2022-12-22T15:07:02.512250920Z stack traceback:
2022-12-22T15:07:02.512256678Z coroutine 0:
2022-12-22T15:07:02.512259872Z /usr/local/apisix/apisix/discovery/dns/init.lua: in function 'nodes'
2022-12-22T15:07:02.512263539Z /usr/local/apisix/apisix/upstream.lua:259: in function 'set_upstream'
2022-12-22T15:07:02.512266986Z /usr/local/apisix/apisix/init.lua:959: in function 'stream_preread_phase'
2022-12-22T15:07:02.512270259Z preread_by_lua(nginx.conf:90):2: in main chunk while prereading client data, client: 9.166.233.109, server: 0.0.0.0:10000
### Steps to Reproduce
as current behavior described
### Environment
- APISIX version (run `apisix version`): 2.15.1 (using helm chart v0.11.4)
- Operating system (run `uname -a`): centos7
- OpenResty / Nginx version (run `openresty -V` or `nginx -V`):
- etcd version, if relevant (run `curl http://127.0.0.1:9090/v1/server_info`): no etcd, yaml
- APISIX Dashboard version, if relevant: no
- Plugin runner version, for issues related to plugin runners:
- LuaRocks version, for installation issues (run `luarocks --version`):
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[GitHub] [apisix] ronething commented on issue #8554: bug: discovery/dns cause panic
Posted by GitBox <gi...@apache.org>.
ronething commented on issue #8554:
URL: https://github.com/apache/apisix/issues/8554#issuecomment-1367373212
because of dns service discovery didn't support in the stream subsystem yet, so it will cause error like below.
```
2022-12-22T15:07:02.512209987Z 2022/12/22 23:07:02 [error] 56#56: *91098 lua entry thread aborted: runtime error: /usr/local/apisix/apisix/discovery/dns/init.lua:32: attempt to index upvalue 'dns_client' (a nil value)
```
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[GitHub] [apisix] ronething commented on issue #8554: bug: discovery/dns cause panic
Posted by GitBox <gi...@apache.org>.
ronething commented on issue #8554:
URL: https://github.com/apache/apisix/issues/8554#issuecomment-1379700098
@caibirdme Hi, as PR https://github.com/apache/apisix/pull/8593 is merged, you can pull master branch in your development environment and try dns service discovery in the stream subsystem.
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[GitHub] [apisix] moonming closed issue #8554: bug: discovery/dns cause panic
Posted by "moonming (via GitHub)" <gi...@apache.org>.
moonming closed issue #8554: bug: discovery/dns cause panic
URL: https://github.com/apache/apisix/issues/8554
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[GitHub] [apisix] caibirdme commented on issue #8554: bug: discovery/dns cause panic
Posted by "caibirdme (via GitHub)" <gi...@apache.org>.
caibirdme commented on issue #8554:
URL: https://github.com/apache/apisix/issues/8554#issuecomment-1454624714
@ronething Thx, is this feature included in any releases?
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[GitHub] [apisix] ronething commented on issue #8554: bug: discovery/dns cause panic
Posted by "ronething (via GitHub)" <gi...@apache.org>.
ronething commented on issue #8554:
URL: https://github.com/apache/apisix/issues/8554#issuecomment-1454789101
> @ronething Thx, is this feature included in any releases?
maybe in version 3.2.0 https://github.com/apache/apisix/pull/8988
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[GitHub] [apisix] caibirdme commented on issue #8554: bug: discovery/dns cause panic
Posted by GitBox <gi...@apache.org>.
caibirdme commented on issue #8554:
URL: https://github.com/apache/apisix/issues/8554#issuecomment-1362990820
When I use nodes directly rather than dns service_name, it works as expected. So I think this might be a bug of discovery/dns
```yaml
stream_routes:
- server_port: 10000
upstream:
nodes:
"1.2.3.4:8081": 1
type: roundrobin
```
And the dns server is healthy, I can use nslookup to check:
```
nslookup qwe-trpc.test 9.166.239.254:53
Server: 9.166.239.254
Address: 9.166.239.254#53
Name: qwe-trpc.test.svc.cluster.local
Address: 9.166.239.70
```
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[GitHub] [apisix] moonming commented on issue #8554: bug: discovery/dns cause panic
Posted by "moonming (via GitHub)" <gi...@apache.org>.
moonming commented on issue #8554:
URL: https://github.com/apache/apisix/issues/8554#issuecomment-1650923827
fixed by https://github.com/apache/apisix/pull/8593
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