# Changing the Hostname

If you have more than one 3D printer and plan on running Klipper on them all, I would recommend that each instance have their own unique 'hostname'. You can change the 'hostname' to whatever you want, for this example I will change the default hostname from 'mainsailos' to 'mainsailos2'.

The hostname is important in the even your IP address changes (DHCP lease time expires) and you want to ping the hostname like in the [Finding Your IP Address](https://sean-dearing.gitbook.io/klipper-installation-for-anycubic-vyper/setting-up-your-raspberry-pi/finding-your-ip-address) section.

* From the Raspberry Pi Software Configuration Tool menu;

  * Select <mark style="color:red;">`System Options`</mark> and press <mark style="color:red;">`Enter`</mark>;

  <div data-gb-custom-block data-tag="hint" data-style="info" class="hint hint-info"><p>Use the arrow keys on your keyboard to navigate the Raspberry Pi Software Configuration Tool menus.</p></div>

![Raspberry Pi Software Configuration Tool - Main Menu](https://3358793419-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FEUZ4ecqSLgI2D4esAcVS%2Fuploads%2Fcc0FZSKPxyBtTf17Zi4K%2F1.png?alt=media\&token=3805af19-cf27-430c-8247-92937c58debb)

* Select <mark style="color:red;">`S4 Hostname`</mark> and press <mark style="color:red;">`Enter`</mark>;

![Hostname](https://3358793419-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FEUZ4ecqSLgI2D4esAcVS%2Fuploads%2F1opUYXBAYU4vLIlIiXQp%2F2.png?alt=media\&token=31410639-9baf-478e-88c7-dd808d235fa3)

* Read the message displayed advising which parameters are acceptable for a 'hostname';
  * Select <mark style="color:red;">`OK`</mark> to continue;

![Hostname Information](https://3358793419-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FEUZ4ecqSLgI2D4esAcVS%2Fuploads%2FmkbyGeKeSosiDvXs2jR9%2F3.png?alt=media\&token=db500adb-1443-40de-8fb9-5f3249b34188)

* At the 'Please enter a hostname' screen;
  * Enter the name you want for your hostname eg. <mark style="color:red;">`mainsailos2`</mark>
  * Select Ok to continue;

![New Hostname](https://3358793419-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FEUZ4ecqSLgI2D4esAcVS%2Fuploads%2FKTQmJMOBn6v4t0tvxtbY%2F4.png?alt=media\&token=a1fb0b45-02e3-462e-8e74-39073d35f0bb)

{% hint style="info" %}
The new 'hostname' will not update until you reboot the Raspberry Pi, you can do this after all of the changes have been made.
{% endhint %}

{% hint style="info" %}
After clicking <mark style="color:red;">`<Ok>`</mark> above, it should return you to the Raspberry Pi Software Configuration Tool main menu.  If it closes the Configuration Tool, type <mark style="color:red;">`sudo raspi-config`</mark> and when prompted enter your new password.
{% endhint %}

![Raspberry Pi Software Configuration Tool - Main Menu](https://3358793419-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FEUZ4ecqSLgI2D4esAcVS%2Fuploads%2Fp3J4lEdZ3uzwgN2Jj19g%2F5.png?alt=media\&token=3c75c606-2b4d-425a-8cc0-4f55962393a7)