I have a situation where I need to set up GitLab behind an IIS.
The GitLab instance is working perfectly fine within the LAN, but trying to set it up through IIS reverse proxy doesn't work.
I get 502 / Bad Gateway no matter what I try.
Any idea how to solve this?
It can be incorrectly specified docker ip address. Here is my working web.config:
<?xml version="1.0" encoding="UTF-8"?> <configuration> <system.webServer> <rewrite> <rules> <clear /> <rule name="Let's encypt" stopProcessing="true"> <match url="^\.well-known.*$" /> <conditions logicalGrouping="MatchAll" trackAllCaptures="false" /> <action type="None" /> </rule> <rule name="gitlab forwarding" stopProcessing="true"> <match url="(.*)" /> <conditions logicalGrouping="MatchAll" trackAllCaptures="false" /> <serverVariables> <set name="HTTP_X_FORWARDED_HOST" value="your.public.domain" /> </serverVariables> <action type="Rewrite" url="http://192.168.99.100:10080/{R:1}" /> </rule> </rules> </rewrite> </system.webServer> </configuration> 
The server variable "HTTP_X_FORWARDED_HOST" is not allowed to be set. Add the server variable name to the allowed server variable list., removed the <serverVariables> section and it works!