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add nginx cookie part extraction to README

This commit is contained in:
Marcel Juhnke 2019-02-01 18:10:44 +01:00
parent a339baf94e
commit c574346086
1 changed files with 34 additions and 0 deletions
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README.md
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@ -424,12 +424,46 @@ server {
auth_request_set $auth_cookie $upstream_http_set_cookie;
add_header Set-Cookie $auth_cookie;
# if you enabled --set-authorization and your cookies are split into multiple parts,
# you also need to extract the additional cookies, because $upstream_http_set_cookie
# only contains the first Set-Cookie header from the auth_request.
auth_request_set $auth_cookie_name_upstream_1 $upstream_cookie_auth_cookie_name_1;
# Extract the Cookie attributes from the first Set-Cookie header and append them
# to the second part ($upstream_cookie_* variables only contain the raw cookie content)
if ($auth_cookie ~* "(; .*)") {
set $auth_cookie_name_0 $auth_cookie;
set $auth_cookie_name_1 "auth_cookie_name_1=$auth_cookie_name_upstream_1$1";
}
# Send both Set-Cookie headers now if there was a second part
if ($auth_cookie_name_upstream_1) {
add_header Set-Cookie $auth_cookie_name_0;
add_header Set-Cookie $auth_cookie_name_1;
}
proxy_pass http://backend/;
# or "root /path/to/site;" or "fastcgi_pass ..." etc
}
}
```
If you use ingress-nginx in Kubernetes (which includes the Lua module), you also can use the following configuration snippet for your Ingress:
```yaml
nginx.ingress.kubernetes.io/auth-response-headers: Authorization
nginx.ingress.kubernetes.io/auth-signin: https://$host/oauth2/start?rd=$request_uri
nginx.ingress.kubernetes.io/auth-url: https://$host/oauth2/auth
nginx.ingress.kubernetes.io/configuration-snippet: |
auth_request_set $name_upstream_1 $upstream_cookie_name_1;
access_by_lua_block {
if ngx.var.name_upstream_1 ~= "" then
ngx.header["Set-Cookie"] = "name_1=" .. ngx.var.name_upstream_1 .. ngx.var.auth_cookie:match("(; .*)")
end
}
```
## Contributing
Please see our [Contributing](CONTRIBUTING.md) guidelines.