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# Setting up the tilde.club IRC server
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We chose to go with `charybdis` , mostly because it's in the Debian/Ubuntu package repository (universe), so we can update it without having to go through the `configure` /`make`/`make install` process.
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## System setup
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The IRC server is an Amazon EC2 instance running Ubuntu. Initial system setup on the IRC server included:
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* Setting the hostname (`sudo hostname irc`) (and perhaps also needing to edit the `/etc/hostname` file -- unclear)
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* updating the `/etc/hosts` file (add `172.30.0.216 irc.tilde.club irc` and `172.30.0.176 tilde.club tilde` )
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* setting the EC2 security group to allow TCP traffic on port 6667 from the `tilde.club` shell server only
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### Setup changes on the tilde.club shell server to access the IRC server
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The `tilde.club` shell server needed a few tweaks as well:
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* updating `/etc/hosts` (add `172.30.0.216 irc.tilde.club irc` so users can reach the IRC server by hostname)
* setting the EC2 security group to allow TCP traffic on port 113 (`identd`) from the IRC server only
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## Installing charybdis
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First we needed to add the "universe" repository to the `apt` repository list:
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```
sudo add-apt-repository "deb http://archive.ubuntu.com/ubuntu $(lsb_release -sc) universe"
```
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Once that was added, `charybdis` could be installed:
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```
sudo apt-get install charybdis
```
