Linux barebones quickstart: Difference between revisions

Latest revision as of 20:33, 27 January 2023

Install the distro

Set up Ubuntu or Centos or some small embedded whateverism...

(Optional) Change the IP

If this is a VM clone, CHANGE YOUR IP NOW before you tear your hair out.

(Optional) Set up hostname

If you've cloned a VM, or you are using any "lite" OS that doesn't have an installer, you'll need to set your hostname to something unique, as a first step:

sudo emacs /etc/hostname && sudo hostname newname  # use hostname cmd to set it right away
# NOTE that systemd can also be used: sudo hostnamectl set-hostname newname
# /etc/hosts changes should not be needed, if hostnames are properly configured (dnsmasq DNS -or- work DNS will provide resolution)

(Optional) Set up user m

"Lite" OS installs will not add a user for you, so if you don't have user m, add user m now.

(Optional) Limit system log size

Prevent endless system logging here.

Set up IP

On home lan, bitpost dnsmasq doles out the ips based on MAC:

hostname # make note
ip address # make note of MAC - there may be more than one (eg: wired and wifi)
[bitpost#] emacs config/etc/dnsmasq.d/mdm_lan_dnsmasq.conf && sudo service dnsmasq restart
# reacquire IP on new box

Copy ssh keys

sudo apt install openssh-server # if needed (usually)
ssh newbox # via password
# 2022 keys
mkdir -p .ssh/2022
[bitpost#] scp -r .ssh/2022/id_ed25519* newguy:.ssh/2022/
cd .ssh && ln -s 2022/id_ed25519 . && cat 2022/id_ed25519.pub >> authorized_keys

It's time to deprecate this one...

# 2018 keys
mkdir -p .ssh/2018
[bitpost#] scp -r .ssh/2018/id_rsa* newguy:.ssh/2018/
cd .ssh && ln -s 2018/id_rsa . && cat 2018/id_rsa.pub >> authorized_keys

Install basic tools

sudo apt update && sudo apt upgrade -y && sudo apt autoremove -y

sudo apt install git curl emacs-nox # ubuntu server
sudo apt install git curl emacs     # ubuntu desktop
sudo yum install git curl emacs-nox # centos

Set up scripts

cd && mkdir development && cd development
git clone morosoph:development/scripts.git 
./scripts/setup_linux.sh [desktop|nodesk] # to continue bootstrapping

That's it, get on with your life.

@@ Line 2: / Line 2: @@
 Set up [[Ubuntu quickstart|Ubuntu]] or [[Centos quickstart|Centos]] or some small embedded whateverism...
-=== Set up IP and hostname ===
+==== (Optional) Change the IP ====
-Note that a fresh install of ubuntu will set the hostname.  But if you've cloned a VM, for example, you'll need to change hostname:
+If this is a VM clone, [[Set your IP|CHANGE YOUR IP NOW]] before you tear your hair out.
+==== (Optional) Set up hostname ====
+If you've cloned a VM, or you are using any "lite" OS that doesn't have an installer, you'll need to set your hostname to something unique, as a first step:
   sudo emacs /etc/hostname && sudo hostname newname  # use hostname cmd to set it right away
   # NOTE that systemd can also be used: sudo hostnamectl set-hostname newname
   # /etc/hosts changes should not be needed, if hostnames are properly configured (dnsmasq DNS -or- work DNS will provide resolution)
-On home lan, dnsmasq doles out the ips based on MAC:
+==== (Optional) Set up user m ====
-* Add a new line to /etc/dnsmasq.conf with your MAC and an available IP.
-* Add your hostname and IP to hosts file.
+"Lite" OS installs will not add a user for you, so if you don't have user m, [[Add a user|add user m now]].
+==== (Optional) Limit system log size ====
-Or, if this is a VM clone, [[Set your IP|CHANGE YOUR IP NOW]] before you tear your hair out.
+Prevent endless system logging [[Systemd#Log_limit|here]].
-=== Install git ===
+=== Set up IP ===
-  sudo apt install git # ubuntu
-  sudo yum install git # centos
+On home lan, bitpost dnsmasq doles out the ips based on MAC:
+  hostname # make note
+ ip address # make note of MAC - there may be more than one (eg: wired and wifi)
+  [bitpost#] emacs config/etc/dnsmasq.d/mdm_lan_dnsmasq.conf && sudo service dnsmasq restart
+ # reacquire IP on new box
 === Copy ssh keys ===
-  mkdir -p .ssh/20##
+ sudo apt install openssh-server # if needed (usually)
-  bitpost# scp -r .ssh/20##/id_rsa* newguy:.ssh/20##/
+ ssh newbox # via password
-  cd .ssh && ln -s 20##/id_rsa .
+ # 2022 keys
+  mkdir -p .ssh/2022
+ [bitpost#] scp -r .ssh/2022/id_ed25519* newguy:.ssh/2022/
+ cd .ssh && ln -s 2022/id_ed25519 . && cat 2022/id_ed25519.pub >> authorized_keys
+It's time to deprecate this one...
+ # 2018 keys
+ mkdir -p .ssh/2018
+  [bitpost#] scp -r .ssh/2018/id_rsa* newguy:.ssh/2018/
+  cd .ssh && ln -s 2018/id_rsa . && cat 2018/id_rsa.pub >> authorized_keys
+=== Install basic tools ===
+ sudo apt update && sudo apt upgrade -y && sudo apt autoremove -y
+ sudo apt install git curl emacs-nox # ubuntu server
+ sudo apt install git curl emacs     # ubuntu desktop
+ sudo yum install git curl emacs-nox # centos
 === Set up scripts ===
   cd && mkdir development && cd development
-  git clone bitpost.com:development/scripts.git
+  git clone morosoph:development/scripts.git
-  ./scripts/setup_linux.sh # to continue bootstrapping
+  ./scripts/setup_linux.sh [desktop|nodesk] # to continue bootstrapping
 That's it, get on with your life.
-=== MIGRATION IN PROGRESS: config distro machine migration ===
-Start to revamp config from [machine]/[distro] to [distro]/[machine] to match scripts.  It's not hard even though it's dangerous.  You can do each machine separately from others.  Get on it!
- # DO THIS ALL IN ONE SESSION, do not log out
- cd development/config
- mkdir -p distro # prolly not needed
- git mv machine/distro distro/machine
- setup_stow.sh # repeat until it doesn't fail; check each failure to make sure it is a symlink, and simply rm them as you go
-=== OLD ===
-moving all this to setup_linux.sh and mh-setup-linux command...
- cd && ln -s development/scripts scripts
- mkdir scripts/[distro]/[new machine]
- emacs -nw .bashrc
- # export PATH=$HOME/scripts/[distro]/[machine]:$HOME/development/scripts/[distro]/i3:$HOME/development/scripts/[distro]:$PATH
-Set up ssh
- # openssh-server defaults are ok but see /etc/ssh/sshd_config for details
- cd ~/.ssh
- scp [another-working-setup]:.ssh/authorized_keys .
- scp [another-working-setup]:.ssh/id_rsa_3072_nopswd .
- scp [another-working-setup]:.ssh/config .
- ln -s id_rsa_3072_nopswd id_rsa
- # also add any other private keys and run [chmod 400] on them
-Set up config
- cd ~/development
- git clone bitpost.com:development/config.git
- cd config
- mkdir -p [distro] && cd distro
- cp -rp [existing machine] [new machine]
- # EDIT IT ALL
- # WARNING - EDIT ACTUAL SYSTEM FILES, NOT repo files, as those will get clobbered when you stow
- # BACK EVERYTHING UP AS YOU GO until we get really good at this :-)
- git add [new machine]
- git commit -a -m "new machine" && git push
- cd && ln -s /home/m/development/config/  optional:[gig]/  [distro]/[new machine] config