dosubot[bot] commented on issue #7833:
URL:
https://github.com/apache/incubator-devlake/issues/7833#issuecomment-2268668004
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Hello, @ravisanrjy! I'm here to assist you with any bugs, questions, and
contributing to the repository while you wait for a human maintainer.
<!-- Answer -->
To resolve the "502 Bad Gateway" error when trying to log in to Apache
DevLake, follow these steps:
1. **Check Service Dependencies**: Ensure that all dependent services are up
and running. Use the following command to check the status of all services:
```sh
docker-compose -f docker-compose.yml ps
```
2. **Verify Ports and Endpoints**: Ensure that the ports and endpoints are
correctly configured and accessible. For example, `config-ui` should be
accessible on port `4000`, and `devlake` on port `8080`.
3. **Check Logs for Errors**: Inspect the logs of the services to identify
any errors. Use the following command to view the logs:
```sh
docker-compose -f docker-compose.yml logs
```
4. **Network Configuration**: Ensure that the `authproxy` service is
correctly configured to forward requests to the `config-ui` service. The
`authproxy` service should be listening on port `4180` and forwarding to
`http://localhost:4000`.
5. **Environment Variables**: Ensure that all required environment variables
are set correctly in the `.env` file.
6. **Nginx Configuration**: Verify the `nginx.conf` file used by the
`config-ui` service. Ensure that the `DEVLAKE_ENDPOINT` and `GRAFANA_ENDPOINT`
are correctly set and that the proxy settings are properly configured. Here is
a relevant snippet from the `nginx.conf` file:
```conf
server {
${LISTENER}
server_name localhost;
absolute_redirect off;
client_max_body_size 20m;
${SERVER_CONF}
root /usr/share/nginx/html;
location = / {
add_header Cache-Control no-cache;
expires 0;
try_files /index.html =404;
}
location / {
try_files $uri /index.html;
}
location /api/ {
resolver ${DNS} valid=${DNS_VALID};
resolver_timeout 3s;
set $target "${DEVLAKE_ENDPOINT}";
rewrite ^ $request_uri;
rewrite ^/api/(.*) $1 break;
proxy_send_timeout 60s;
proxy_read_timeout 60s;
proxy_pass ${DEVLAKE_ENDPOINT_PROTO}://$target/$uri;
proxy_http_version 1.1;
proxy_set_header "Connection" "";
}
location /api/rest/ {
auth_basic off;
resolver ${DNS} valid=${DNS_VALID};
resolver_timeout 3s;
set $target "${DEVLAKE_ENDPOINT}";
rewrite /api/(.*) /$1 break;
proxy_send_timeout 60s;
proxy_read_timeout 60s;
proxy_pass ${DEVLAKE_ENDPOINT_PROTO}://$target;
proxy_http_version 1.1;
proxy_set_header "Connection" "";
}
location /grafana/ {
auth_basic off;
set $external "${USE_EXTERNAL_GRAFANA}";
if ($external = "true") {
return 302 "${GRAFANA_ENDPOINT}";
}
resolver ${DNS} valid=${DNS_VALID};
resolver_timeout 3s;
set $target "${GRAFANA_ENDPOINT}";
proxy_set_header Host $http_host;
proxy_set_header Authorization "";
proxy_set_header X-Forwarded-Access-Token "${cookie_access_token}";
proxy_send_timeout 60s;
proxy_read_timeout 60s;
proxy_pass ${GRAFANA_ENDPOINT_PROTO}://$target;
proxy_http_version 1.1;
proxy_set_header "Connection" "";
}
location /health/ {
auth_basic off;
return 200;
}
location /health {
auth_basic off;
return 200;
}
}
```
By following these steps and ensuring the configurations are correct, you
should be able to resolve the "502 Bad Gateway" error
<sup>[[1]](https://github.com/apache/incubator-devlake/blob/main/docker-compose-dev.yml)</sup><sup>[[2]](https://github.com/apache/incubator-devlake/blob/main/config-ui/nginx.conf)</sup><sup>[[3]](https://github.com/apache/incubator-devlake/blob/main/devops/releases/lake-v0.15.0/docker-compose.yml)</sup>.
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