README.md

# Documentation

- https://www.haproxy.com/doc/aloha/7.0/haproxy/index.html
- https://cbonte.github.io/haproxy-dconv/index.html
- https://cbonte.github.io/haproxy-dconv/1.6/configuration.html

# Instruction to prepare a certificate file

For HaProxy to terminate SSL requests we require a single PEM file with all certificate components chained together.

The seqeuence of those compoenents is this:

- Private Key, e.g. example.com.key.pem
- Domain Certficate, e.g. example.com.crt.pem
- Intermediate Certificate, e.g. example.com.ca.crt.pem

# Watching statistics

Create an SSH tunnel to the haproxy host's port 7000 and then go to `http://127.0.0.1:7000/haproxy_stats` to get live stats.

# Talking to HaProxy Socket
 
HaProxy can communicate with the console through a socket and we provide a script called `hasocket` which can be used for that purpose. You either call that from the proxy's console or run it through Ansible with this command:

```
a -a "hasocket 'help'" --limit=proxyserver
```

Useful commands might be:

- "show info"
  show informations like haproxy version, PID, current connections, session rates, tasks, etc..
- "show stat"
  prints the stats about all frontents and backends (connection statistics etc) in a csv format
- "show errors"
  indeed the following prints informations about errors if there are any
- "show sess"
  show open sessions with the used backend/frontend, the source, etc..