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Posted to notifications@apisix.apache.org by "kayx23 (via GitHub)" <gi...@apache.org> on 2023/11/22 01:32:22 UTC
[I] bug: environment variable in `apisix.yaml` fails to resolve [apisix]
kayx23 opened a new issue, #10530:
URL: https://github.com/apache/apisix/issues/10530
### Current Behavior
From the [tests](https://github.com/apache/apisix/blob/master/t/cli/test_standalone.sh) it seems that `apisix.yaml` supports the injection of environment variables.
Hence I previously opened https://github.com/apache/apisix/issues/10509 for doc improvement. However, it's been noted from manual testing that env var in `apisix.yaml` did not get resolved when deploying APISIX in standalone mode in Docker.
### Expected Behavior
_No response_
### Error Logs
_No response_
### Steps to Reproduce
```shell
docker run -d \
--name apisix-standalone \
-p9080:9080 -p9443:9443 -p9090:9092 \
-e APISIX_STAND_ALONE=true \
-e UPSTREAM_NODE_HTTPBIN="httpbin.org" \
apache/apisix
```
```shell
docker exec apisix-standalone /bin/sh -c "echo '
routes:
-
id: example-route-to-httpbin
uri: /anything/test
upstream:
nodes:
"${{UPSTREAM_NODE_HTTPBIN}}": 1
type: roundrobin
#END
' > /usr/local/apisix/conf/apisix.yaml"
```
Send a request to the route, if should not go through. In logs you see `failed to resolve variables`:
### Environment
APISIX version 3.6.0 Docker image
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Re: [I] bug: environment variable in `apisix.yaml` fails to resolve [apisix]
Posted by "Revolyssup (via GitHub)" <gi...@apache.org>.
Revolyssup commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1822363904
@kayx23 While you exec and pass on the string, the environment variable is resolved locally from the shell where you're executing the command and not from inside the container.
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Re: [I] bug: environment variable in `apisix.yaml` fails to resolve [apisix]
Posted by "kayx23 (via GitHub)" <gi...@apache.org>.
kayx23 commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1870025034
Just localized the issue a bit more and it doesn't seem to relate to @hanqingwu 's findings too much.
It has something to do with whether you export the env var or not:
* If you set the env var with `export env_var=value`, APISIX will pick up the env var normally.
* If you do not export and just set the env var with `env_var=value`, `apisix init` will fail with `failed to resolve variables`
I installed APISIX on the host machine and tested with `config.yaml` and `apisix.yaml` in standalone mode.
## Successful Test with `apisix.yaml`
First, `export UPSTREAM_NODE_HTTPBIN=httpbin.org`
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Re: [I] bug: environment variable `${{ENV_VAR:=}}` in `apisix.yaml` fails to resolve when using APISIX standalone mode in Docker [apisix]
Posted by "monkeyDluffy6017 (via GitHub)" <gi...@apache.org>.
monkeyDluffy6017 closed issue #10530: bug: environment variable `${{ENV_VAR:=}}` in `apisix.yaml` fails to resolve when using APISIX standalone mode in Docker
URL: https://github.com/apache/apisix/issues/10530
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Re: [I] bug: environment variable `${{ENV_VAR:=}}` in `apisix.yaml` fails to resolve when using APISIX standalone mode in Docker [apisix]
Posted by "shreemaan-abhishek (via GitHub)" <gi...@apache.org>.
shreemaan-abhishek commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1878103390
I will close this once #10755 is merged.
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Re: [I] bug: environment variable `${{ENV_VAR:=}}` in `apisix.yaml` fails to resolve when using APISIX standalone mode in Docker [apisix]
Posted by "shreemaan-abhishek (via GitHub)" <gi...@apache.org>.
shreemaan-abhishek commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1875384575
> can be documented if it works....
https://github.com/apache/apisix/issues/10530#issuecomment-1870025034
<img width="1045" alt="image" src="https://github.com/apache/apisix/assets/61597896/2bc9c060-ed7c-4f84-9d7d-afb3f21d35ea">
this works right?
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Re: [I] bug: environment variable `${{ENV_VAR:=}}` in `apisix.yaml` fails to resolve when using APISIX standalone mode in Docker [apisix]
Posted by "markokocic (via GitHub)" <gi...@apache.org>.
markokocic commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1876676483
> Yes. You need to apisix reload after the config change. Because nginx doesn't inherit all the environment variables.
Shouldn't this be done automatically after detecting that config changed and before re-reading the config?
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Re: [I] bug: environment variable in `apisix.yaml` fails to resolve [apisix]
Posted by "kayx23 (via GitHub)" <gi...@apache.org>.
kayx23 commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1869205425
cc: @monkeyDluffy6017 @shreemaan-abhishek
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Re: [I] help request: environment variable in `apisix.yaml` fails to resolve [apisix]
Posted by "JonathanDagan (via GitHub)" <gi...@apache.org>.
JonathanDagan commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1869102775
I'm also having the same issue using the `3.7.0` image and none of the following worked:
- $ENV://ENV_KEY [as specified here](https://apisix.apache.org/docs/apisix/terminology/secret/)
- ${{ENV_KEY}}
- ${{ENV_KEY:=}}
- ${ENV_KEY}
in all cases, I have made sure that the variable is loaded into the container either by using an outside env set (`docker run -e` or with `docker-compose` environment variables) to make sure that the environment variables where set.
From what I gathered from the logs there is the following error:
```
[lua] config_yaml.lua:112: failed: failed to resolve variables:failed to handle configuration: can't find environment variable REMOTE_API_HOST, context: ngx.timer
```
which indicates that even though the environment variable is set it needs some way to be loaded or be accessed through nginx explicitly
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Re: [I] bug: environment variable in `apisix.yaml` fails to resolve [apisix]
Posted by "kayx23 (via GitHub)" <gi...@apache.org>.
kayx23 commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1869976289
Interesting... thanks for looking into it! @hanqingwu
I'll look into this a bit more later. I'm wondering why `config.yaml` doesn't have the same problem with env var (or does it). APISIX also has test coverage for this and it wasn't failed...
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Re: [I] bug: environment variable `${{ENV_VAR:=}}` in `apisix.yaml` fails to resolve when using APISIX standalone mode in Docker [apisix]
Posted by "markokocic (via GitHub)" <gi...@apache.org>.
markokocic commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1875368071
hi @kayx23 here's my setup full example. I think we are a bit closer to finding out the underlying problem.
docker-compose-standalone.yml:
```
version: "3"
services:
apisix:
image: apache/apisix:${APISIX_IMAGE_TAG:-3.7.0-debian}
restart: always
volumes:
- ./apisix_conf/apisix-standalone.yaml:/usr/local/apisix/conf/apisix.yaml:ro
environment:
- APISIX_STAND_ALONE=true
- EP_MYHOST_1=b92.net
- EP_MYHOST_2=blic.rs
ports:
- "9180:9180/tcp"
- "9080:9080/tcp"
- "9091:9091/tcp"
- "9443:9443/tcp"
- "9092:9092/tcp"
networks:
apisix:
web1:
image: nginx:1.19.0-alpine
restart: always
volumes:
- ./upstream/web1.conf:/etc/nginx/nginx.conf
ports:
- "9081:80/tcp"
environment:
- NGINX_PORT=80
networks:
apisix:
networks:
apisix:
driver: bridge
```
apisix_conf/apisix-standalone.yaml:
```
routes:
- uri: /b92/*
upstream:
nodes:
"${{EP_MYHOST_1:=}}:443": 1
type: roundrobin
scheme: https
#END
```
As you can see, I defined EP_MYHOST_1 and EP_MYHOST_2 environment variables in a standard docker way.
After that, I started docker with `docker compose -f docker-compose-standalone.yml up -d`
When I ran the following right after starting docker, I got success:
```
curl http://localhost:9080/b92/index.html -v
```
However, if I after that change the config file to use EP_MYHOST_2 instead of EP_MYHOST_1 like so:
```
routes:
- uri: /b92/*
upstream:
nodes:
"${{EP_MYHOST_2:=}}:443": 1
type: roundrobin
scheme: https
#END
```
the config gets reloaded successfully, but the environment variable can't be resolved any more, although it is properly defined. If I edit it back to EP_MYHOST_1, it works again.
Looks like something gets wrong after reloading the config file. It seems like it can resolve env variables only if they are present in that file from the beginning, making the whole config reload feature confusing and not practical.
At the beginning, I was thinking environment variable resolution didn't work at all because I was starting with the empty config file and editing and reloading it incrementally, thinking it wouldn't matter if the variable was there from the start or not.
cc: @shreemaan-abhishek , @hanqingwu
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Re: [I] bug: environment variable in `apisix.yaml` fails to resolve [apisix]
Posted by "kayx23 (via GitHub)" <gi...@apache.org>.
kayx23 commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1822388955
In yaml files? But all the docs and test cases suggest in config.yaml and apisix.yaml the env vars get picked up with the ${{...}} syntax.
Sure I can check but I really question it.
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Re: [I] help request: environment variable in `apisix.yaml` fails to resolve [apisix]
Posted by "markokocic (via GitHub)" <gi...@apache.org>.
markokocic commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1871924258
Hi @kayx23 , that was exactly what I tried in https://github.com/apache/apisix/issues/10509#issuecomment-1820482197
apisix.yml is mounted and env variable set directly in docker compose file.
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Re: [I] bug: environment variable `${{ENV_VAR:=}}` in `apisix.yaml` fails to resolve when using APISIX standalone mode in Docker [apisix]
Posted by "shreemaan-abhishek (via GitHub)" <gi...@apache.org>.
shreemaan-abhishek closed issue #10530: bug: environment variable `${{ENV_VAR:=}}` in `apisix.yaml` fails to resolve when using APISIX standalone mode in Docker
URL: https://github.com/apache/apisix/issues/10530
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Re: [I] bug: environment variable `${{ENV_VAR:=}}` in `apisix.yaml` fails to resolve when using APISIX standalone mode in Docker [apisix]
Posted by "markokocic (via GitHub)" <gi...@apache.org>.
markokocic commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1875397943
hi @shreemaan-abhishek
If you look at my comments, both env variables are defined in the same standard docker way in docker compose.
However, looks like Apisix will resolve only variable that were present in apisix.yml when Apisix is started. The variables that are defined in docker compose, but added to apisix.yml after Apisix is started, will be somehow ignored after the config reload task.
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Re: [I] bug: environment variable `${{ENV_VAR:=}}` in `apisix.yaml` fails to resolve when using APISIX standalone mode in Docker [apisix]
Posted by "shreemaan-abhishek (via GitHub)" <gi...@apache.org>.
shreemaan-abhishek commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1876222842
> However, looks like Apisix will resolve only variable that were present in apisix.yml when Apisix is started. The variables that are defined in docker compose, but added to apisix.yml after Apisix is started, will be somehow ignored after the config reload task.
Yes. You need to `apisix reload` after the config change. Because nginx doesn't inherit all the environment variables.
When apisix starts in standalone mode, it adds the env vars from `apisix.yaml` to the `nginx.conf`. And when you add new env vars in the `apisix.yaml` config, the they are added in `nginx.conf` only after `apisix reload` (or equivalent).
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Re: [I] bug: environment variable `${{ENV_VAR:=}}` in `apisix.yaml` fails to resolve when using APISIX standalone mode in Docker [apisix]
Posted by "shreemaan-abhishek (via GitHub)" <gi...@apache.org>.
shreemaan-abhishek commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1878071587
I'll consider it resolved. https://github.com/apache/apisix/issues/10530#issuecomment-1876222842
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Re: [I] bug: environment variable in `apisix.yaml` fails to resolve [apisix]
Posted by "kayx23 (via GitHub)" <gi...@apache.org>.
kayx23 commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1822373410
For the above screenshot I actually went into the container and echo the configs into apisix.yaml. I only updated the command before creating this issue. Sorry for the confusion.
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Re: [I] help request: environment variable in `apisix.yaml` fails to resolve [apisix]
Posted by "markokocic (via GitHub)" <gi...@apache.org>.
markokocic commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1871429936
Well, it still doesn't work with environment variables set in a standard docker way. The fact that docker is the standard and probably most common way of running Apisix, this should either be fixed or explicitly mentioned in documentation that docker -e or env files don't work.
CC: @kayx23 @AlinsRan
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Re: [I] bug: environment variable in `apisix.yaml` fails to resolve [apisix]
Posted by "kayx23 (via GitHub)" <gi...@apache.org>.
kayx23 commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1870027962
cc: @markokocic
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Re: [I] bug: environment variable `${{ENV_VAR:=}}` in `apisix.yaml` fails to resolve when using APISIX standalone mode in Docker [apisix]
Posted by "kayx23 (via GitHub)" <gi...@apache.org>.
kayx23 commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1875042102
@shreemaan-abhishek can be documented if it works....
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Re: [I] bug: environment variable `${{ENV_VAR:=}}` in `apisix.yaml` fails to resolve when using APISIX standalone mode in Docker [apisix]
Posted by "kayx23 (via GitHub)" <gi...@apache.org>.
kayx23 commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1875883583
@shreemaan-abhishek the comment you took a screenshot of mentioned I directly installed on the host. I ran into a sed-related error starting APISIX in standalone mode with mounted volume, which blocked me from testing further: https://github.com/apache/apisix-docker/issues/529
@markokocic 's latest comments are good summaries on the matter. It now seems to not be so Docker related and in line with what @hanqingwu described.
The next step would be to evaluate whether this leads to only a doc improvement, or more.
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Re: [I] bug: environment variable `${{ENV_VAR:=}}` in `apisix.yaml` fails to resolve when using APISIX standalone mode in Docker [apisix]
Posted by "Vacant2333 (via GitHub)" <gi...@apache.org>.
Vacant2333 commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1884331032
looks like we can close this issue now, thanks @shreemaan-abhishek
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Re: [I] bug: environment variable `${{ENV_VAR:=}}` in `apisix.yaml` fails to resolve when using APISIX standalone mode in Docker [apisix]
Posted by "shreemaan-abhishek (via GitHub)" <gi...@apache.org>.
shreemaan-abhishek commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1875026536
@kayx23 I think we should document a reliable way to use ENV VARS in yaml for docker based deployments, what say?
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Re: [I] help request: environment variable in `apisix.yaml` fails to resolve [apisix]
Posted by "kayx23 (via GitHub)" <gi...@apache.org>.
kayx23 commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1871644869
Hi @markokocic , I updated the doc comfortable knowing that apsix.yaml does support env var, but perhaps shouldn't have closed this issue with the doc PR.
Based on @hanqingwu 's suggestions above, I suppose the next step could be to try to mount the apisix.yaml (with initial configurations that use env var) to the container at startup, though I haven't had the chance to give this a go.
We could reopen the issue if everyone thinks it's fitting.
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Re: [I] bug: environment variable in `apisix.yaml` fails to resolve [apisix]
Posted by "hanqingwu (via GitHub)" <gi...@apache.org>.
hanqingwu commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1870129261
yes , if you first set apisix.yaml then start apisix , env var works.
but when you first start apisix , then set apisix.yaml , env var it fails . just like you Initial steps as top .
@kayx23
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Re: [I] help request: environment variable in `apisix.yaml` fails to resolve [apisix]
Posted by "AlinsRan (via GitHub)" <gi...@apache.org>.
AlinsRan closed issue #10530: help request: environment variable in `apisix.yaml` fails to resolve
URL: https://github.com/apache/apisix/issues/10530
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Re: [I] bug: environment variable in `apisix.yaml` fails to resolve [apisix]
Posted by "hanqingwu (via GitHub)" <gi...@apache.org>.
hanqingwu commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1869939834
@kayx23
i have trace this bug . so i find root cause is nginx ,
By default, nginx removes all environment variables inherited from its parent process except the TZ variable. This directive allows preserving some of the inherited variables, changing their values, or creating new environment variables.
The answer in the http://nginx.org/en/docs/ngx_core_module.html#env
so you need modify nginx.conf in apisix/cli/ngx_tpl.lua then add "env UPSTREAM_NODE_HTTPBIN;'"
then update apisix.yaml will work
some reference:
https://github.com/openresty/openresty/issues/171
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Re: [I] bug: environment variable `${{ENV_VAR:=}}` in `apisix.yaml` fails to resolve when using APISIX standalone mode in Docker [apisix]
Posted by "kayx23 (via GitHub)" <gi...@apache.org>.
kayx23 commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1872276960
@markokocic Ok I see. Could you share the complete docker compose file here if you still have it? We could update the issue description with it. Happy year end btw!
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Re: [I] bug: environment variable `${{ENV_VAR:=}}` in `apisix.yaml` fails to resolve when using APISIX standalone mode in Docker [apisix]
Posted by "hanqingwu (via GitHub)" <gi...@apache.org>.
hanqingwu commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1876184108
env directive should be used in nginx.conf. then os.getenv work well
for reference:
https://github.com/openresty/lua-nginx-module#system-environment-variable-support
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Re: [I] bug: environment variable `${{ENV_VAR:=}}` in `apisix.yaml` fails to resolve when using APISIX standalone mode in Docker [apisix]
Posted by "shreemaan-abhishek (via GitHub)" <gi...@apache.org>.
shreemaan-abhishek commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1876748044
reloading apisix everytime the config changes sounds like a very bad bad idea.
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Re: [I] bug: environment variable in `apisix.yaml` fails to resolve [apisix]
Posted by "Revolyssup (via GitHub)" <gi...@apache.org>.
Revolyssup commented on issue #10530:
URL: https://github.com/apache/apisix/issues/10530#issuecomment-1822377196
Can you try with ${} instead of ${{}}. I can assure that my env variable is getting picked up passed inside ${}
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