Deployment with systemd

To setup sish using systemd, complete the steps as follows:

1. Setup the user that will be running sish:

   # Add the user
   useradd -d /srv/sish -m sish
   
   # Login as the user
   su sish
   
   # Jump into the home folder for the user
   cd /srv/sish
   
   # Create the directory to store public keys
   # Place your public keys here!
   mkdir pubkeys sish
   
   # Download sish. This grabs `v2.0.0`. If you would like to retrieve a
   # different version, change the `2.0.0` to the semantic version you'd like.
   curl -L "https://github.com/antoniomika/sish/releases/download/v2.0.0/sish-2.0.0.$(uname | tr '[:upper:]' '[:lower:]')-$((uname -m | grep -q armv8 && echo arm64) || (uname -m | grep -q aarch64 && echo arm64) || (uname -m | grep -q arm && echo armv6) || echo amd64).tar.gz" | tar -xzC /srv/sish/sish --strip-components=1
   
   # Or build sish from source. This checks out the `v2.0.0` version.
   # Similar to above, change this to the version or branch you'd like.
   git clone https://github.com/antoniomika/sish.git sish && git checkout v2.0.0
   go build .
   
   # switch back to the root user
   exit

2. Setup the unit file at /etc/systemd/system/sish.service:

   💡 These args are not exhaustive: ensure the arguments match your intended use!

   [Unit]
   Description=sish
   
   [Service]
   ExecStart=/srv/sish/sish/sish \
       --ssh-address=:22 \
       --http-address=:80 \
       --authentication-keys-directory=/srv/sish/pubkeys \
       -d sish.example.com \
       --bind-random-subdomains=false
   WorkingDirectory=/srv/sish/sish
   User=sish
   Group=sish
   Restart=on-failure
   RestartSec=5s
   ProtectSystem=strict
   PrivateTmp=true
   PrivateDevices=true
   ProtectKernelTunables=true
   ProtectKernelModules=true
   ProtectControlGroups=true
   AmbientCapabilities=CAP_NET_BIND_SERVICE
   
   [Install]
   WantedBy=multi-user.target

3. Start the sish service

   systemctl start sish

4. Enable the sish service so it restarts on reboots

   systemctl enable sish

5. Check service status

   systemctl status sish