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1 Changing the Hostname on a Linux Box
2 ====================================
3 :author: Aaron Ball
4 :email: nullspoon@iohq.net
5
6
7 == {doctitle}
8
9 I recently had need to change a server name due to a change in our server
10 naming scheme (local ski resorts to breweries). For the simple comedy of the
11 naming scheme switch, here's how it currently looks (without server prefixes
12 for security purposes of course). If you just want the solution, skip down a
13 paragraph.
14
15 Our current environment is mostly virtualized. The hosts are named after
16 breweries and their virtual guests are named after the beers that each brewery
17 produces. Clever, yeah? I can already feel my morale rising.
18
19
20
21 First off, open up a terminal window
22
23 image:files/terminal001.png[height=400]
24
25 Then type
26
27 image:files/terminal002b.png[height=200]
28
29 The file that comes up should contain nothing but a hostname. In my case this
30 is . (Ctrl + x closes the file, y says to save the file before closing, Enter
31 saves the file under the original filename).
32
33 image:files/terminal003.png[height=300]
34
35 Once you've done this, all you need to do is restart your computer and you
36 should be golden.
37
38 Here's how we fix the aforementioned issue.
39
40 If you've closed your terminal for the restart, open it up again. Type *sudo
41 nano /etc/hosts*
42
43 image:files/terminal004.png[height=300]
44
45 At the top you should see 127.0.0.1, 127.0.1.1 and their associated
46 'hostnames'. The one to the right of 127.0.1.1 should show your old hostname.
47 Change that to the new hostname and save the file (Press Ctrl + x -> y ->
48 Enter). Now your computer's IP address should resolve to its new hostname.
49
50 Enjoy!
51
52 Now for a cup of joe...
53
54
55 Category:Linux
56
57
58 // vim: set syntax=asciidoc:
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