A shell script to install Concourse on a systemd-based Ubuntu using the plain binary

install-concourse-on-ubuntu.sh

#! /bin/bash -eu
 
EXTERNAL_URL_HOST_NAME="$1"
ADMIN_USERNAME="$2"
ADMIN_PASSWORD="$3"
 
CONCOURSE_VERSION=${CONCOURSE_VERSION:-v1.1.0}
 
apt-get update
apt-get install -y postgresql postgresql-contrib
 
sudo -u postgres createuser -s concourse
sudo -u postgres createdb --owner=concourse concourse
 
curl -L -f -o /usr/local/bin/concourse https://github.com/concourse/concourse/releases/download/$CONCOURSE_VERSION/concourse_linux_amd64
chmod +x /usr/local/bin/concourse
 
mkdir -p /etc/concourse
ssh-keygen -t rsa -f /etc/concourse/host_key -N ''
ssh-keygen -t rsa -f /etc/concourse/session_signing_key -N ''
ssh-keygen -t rsa -f /etc/concourse/worker_key -N ''
cp /etc/concourse/worker_key.pub /etc/concourse/authorized_worker_keys
 
adduser --system --group concourse
chgrp concourse /etc/concourse/*
chmod g+r /etc/concourse/*
 
cat >/etc/systemd/system/concourse_web.service <<-EOF
        [Unit]
        Description=Concourse CI Web
        After=postgres.service
 
        [Service]
        ExecStart=/usr/local/bin/concourse web \
               --basic-auth-username "$ADMIN_USERNAME" \
               --basic-auth-password "$ADMIN_PASSWORD" \
               --session-signing-key /etc/concourse/session_signing_key \
               --tsa-host-key /etc/concourse/host_key \
               --tsa-authorized-keys /etc/concourse/authorized_worker_keys \
               --external-url "http://$EXTERNAL_URL_HOST_NAME:8080" \
               --postgres-data-source 'postgres:///concourse?host=/var/run/postgresql'
 
        User=concourse
        Group=concourse
 
        Type=simple
 
        [Install]
        WantedBy=default.target
EOF
 
cat >/etc/systemd/system/concourse_worker.service <<-EOF
        [Unit]
        Description=Concourse CI Worker
        After=concourse_web.service
 
        [Service]
        ExecStart=/usr/local/bin/concourse worker \
               --work-dir /var/lib/concourse \
               --tsa-host localhost \
               --tsa-public-key /etc/concourse/host_key.pub \
               --tsa-worker-private-key /etc/concourse/worker_key
 
        User=root
        Group=root
 
        Type=simple
 
        [Install]
        WantedBy=default.target
EOF
 
systemctl enable concourse_web.service
systemctl start concourse_web.service
 
systemctl enable concourse_worker.service
systemctl start concourse_worker.service