mystic/source/_posts/raspian.md

title	date	thumbnail	comments	tags	categories
Installing Raspian on a Pi	2018-09-01 22:26:46	/images/raspian.jpg	false	Setup	Install Raspian

Intro

Installing Raspbian on a Pi is super easy. First get hold of Raspbian. I use the “Stretch-Lite” version, as it is smaller and I don't need a GUI.

You’ll need to use a tool to write the image to an SD card. If you have Linux - you can use Linux's dd command. If you use Windows or a Mac, (or you want a GUI for Linux), you can use etcher.

You have two options:

1. Basic

A basic install means that you install Raspbian and it consumes the complete capacity of your SD card. This is by far the easiest and less complex setup.

The image itself as about 1.5G, and when you install it on a (larger) SD card, when Raspbian first boots, it will automatically re-partition the SD card so that the root partition consumes the remaining capacity of the SD card and reboot. On the subsequent reboot it will automatically resize that file system so that it now consumes that remaining capacity.

2. Advanced

An advanced install means that you want to control your file system layout and potentially use more mount points and/or some block devices. I went through this process because I wanted to install glusterFS on my Pi(s) so that I can share a replicated file system with more than 1 Pi. I needed this because I wanted to use Docker Swarm (where your docker containers can float between Pis) and glusterFS provides the consistent persistent storage for those containers. And since glusterFS provides redundancy options, it means I can take a Pi offline (or in case it dies) and my BBS will start on another Pi.

To do this install, I modified the Raspbian image, so that it wouldn't resize the root file system after a reboot. You can achieve this by removing init=/usr/lib/raspi-config/init_resize.sh in cmdline.txt (on the boot partition) - it should be at the end of the line.

After the system boots, you can resize your partitions as you would like, but:

• Dont change the first partition at all, it is your boot partition
• Dont make the second partition any smaller than what it is. You can make it larger, and after you have done so, on the next reboot use resize2fs to adjust the filesystem size.

You can use the rest of your diskspace as partition 3 onwards.

Here is what mine looks like:

Disk /dev/mmcblk0: 59.6 GiB, 64021856256 bytes, 125042688 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x1376769f

Device         Boot   Start       End   Sectors  Size Id Type
/dev/mmcblk0p1         8192     96663     88472 43.2M  c W95 FAT32 (LBA)
/dev/mmcblk0p2        98304   4292607   4194304    2G 83 Linux
/dev/mmcblk0p3      4292608 125042687 120750080 57.6G 8e Linux LVM

Now you can setup Mystic BBS, MBSE BBS or your favourite BBS software, or follow my Docker installation if you want to run your BBS’s in docker.