X-Git-Url: https://git.josue.xyz/?a=blobdiff_plain;f=ssh-adduser%2FREADME.md;h=06b282a19328827e5d4bd228459d4d46bd65b99d;hb=89e0e89d8934850cf3a421034d8a21f15880d864;hp=133d22bd16575852727e03c95bd7075bd04a1dc5;hpb=cd900667cb0aa8008f9335ad0bc2437023ad68e9;p=webi-installers%2F.git diff --git a/ssh-adduser/README.md b/ssh-adduser/README.md index 133d22b..06b282a 100644 --- a/ssh-adduser/README.md +++ b/ssh-adduser/README.md @@ -4,55 +4,60 @@ homepage: https://webinstall.dev/ssh-adduser tagline: | SSH adduser: Because friends don't let friends login or run stuff as root linux: true -description: | - Many modern web programs (`npm` and `postgres`, for example) will not function correctly if run as root. +--- - `ssh-adduser` will +## Cheat Sheet - 1. add the user `me` - 2. sets a random, 32-character password (as a failsafe) - 3. copy the `root` user's **`~/.ssh/authorized_keys`** (so the same users can still login) - 4. gives the `me` user `sudo` (admin) privileges - 5. allows `me` to `sudo` without a password ---- +> Many modern web programs (`npm` and `postgres`, for example) will not function +> correctly if run as root. + +`ssh-adduser` will + +1. add the user `app` +2. set a random, 32-character password (as a failsafe) +3. copy the `root` user's **`~/.ssh/authorized_keys`** (so the same users can + still login) +4. give the `app` user `sudo` (admin) privileges +5. allow `app` to `sudo` without a password -How to create a new user named 'me': +How to create a new user named 'app': ```bash -# Note: --disable-password means that the user cannot yet login -adduser --disabled-password --gecos "" me +# --disable-password prevents a password prompt +# --gecos "" skips the useless questions +adduser --disabled-password --gecos "" app ``` How to create a and set a random password: ```bash -# store a random 16-byte password into 'my_password' +# sets 'my_password' to 32 random hex characters (16 bytes) my_password=$(openssl rand -hex 16) -# use 'my_password' to set the user 'me's password -printf "$my_password"'\n'"$my_password" | passwd me +# uses 'my_password' for to reset and confirm 'app's password +printf "$my_password"'\n'"$my_password" | passwd app ``` -How to make the user 'me' a "sudo"er (an admin): +How to make the user 'app' a "sudo"er (an admin): ```bash -adduser me sudo +adduser app sudo ``` -How to allow 'me' to run sudo commands without a password: +How to allow 'app' to run sudo commands without a password: ```bash -echo "me ALL=(ALL:ALL) NOPASSWD: ALL" | sudo tee /etc/sudoers.d/me +echo "app ALL=(ALL:ALL) NOPASSWD: ALL" | sudo tee /etc/sudoers.d/app ``` How to copy allowed keys from root to the new user: ```bash -mkdir -p /home/me/.ssh/ -chmod 0700 /home/me/.ssh/ +mkdir -p /home/app/.ssh/ +chmod 0700 /home/app/.ssh/ -cat "$HOME/.ssh/authorized_keys" >> /home/me/.ssh/authorized_keys -chmod 0600 /home/me/.ssh/authorized_keys +cat "$HOME/.ssh/authorized_keys" >> /home/app/.ssh/authorized_keys +chmod 0600 /home/app/.ssh/authorized_keys -chown -R me:me /home/me/.ssh/ +chown -R app:app /home/app/.ssh/ ```