HAProxy

Manage HAProxy backend servers using socket.

Enable HashiCorp Vault audit logs.

Use HAProxy to redirect connection to active HashiCorp Vault cluster.

Ensure that HAProxy keeps up with Docker name resolution.

Create an exception for a regular user to access service socket using systemd.

Use HAProxy with Lua to enforce dynamically generated passwords for basic authentication.

Use simple HAProxy configuration hacks to serve a single static file.

Merge multi-process HAProxy statistics using GNU Awk. This is a duct tape solution, as you should definitely use Lua.

Merge multi-process HAProxy statistics using Lua.

Use HAProxy stats socket to determine current application status.

There are use cases where you need to know which backend server is used, so use a specific header to send the target server name to the backend.

Handle domains that are not defined in the configuration using dedicated backend.

Define backup backend in HAProxy configuration to choose used backend depending on the number of usable servers.

Recently, I have parsed logs of several applications to generate custom weekly reports. It was a fascinating exercise.

Dynamically choose HAProxy backend depending on the HTTP host header, Lua programming language and environment variable.

Recently, I have moved my personal source code to GitLab. It rendered self-hosted git repository at repository.sleeplessbeastie.eu obsolete, so I have created simple redirection on HAProxy load balanced to cover this specific case.

Define and use a variable to dynamically choose HAProxy backend depending on the URL parameter, HTTP header field, and cookie value.

Block particular IP addresses on HAProxy load balancer using simple Access Control List.

Define basic authentication on HAProxy load balancer to limit access to specific backends.

Define allowed HTTP methods on HAProxy load balancer using simple Access Control Lists.

Enable HTTP/2 on HAProxy 1.8 and temporarily fix the bad request problem with the Nginx backend using FastCGI/uWSGI.

Install recent HAProxy version to take advantage of the new fancy features.