#!/usr/bin/env bash set -eo pipefail; [[ $TRACE ]] && set -x # A script to bootstrap dokku. # It expects to be run on Ubuntu 14.04 via 'sudo' # If installing a tag higher than 0.3.13, it may install dokku via a package (so long as the package is higher than 0.3.13) # It checks out the dokku source code from Github into ~/dokku and then runs 'make install' from dokku source. # We wrap this whole script in functions, so that we won't execute # until the entire script is downloaded. # That's good because it prevents our output overlapping with wget's. # It also means that we can't run a partially downloaded script. ensure-environment() { local FREE_MEMORY echo "Preparing to install $DOKKU_TAG from $DOKKU_REPO..." if ! command -v apt-get &>/dev/null; then echo "This installation script requires apt-get. For manual installation instructions, consult http://dokku.viewdocs.io/dokku/advanced-installation/" exit 1 fi hostname -f > /dev/null 2>&1 || { echo "This installation script requires that you have a hostname set for the instance. Please set a hostname for 127.0.0.1 in your /etc/hosts" exit 1 } FREE_MEMORY=$(grep MemTotal /proc/meminfo | awk '{print $2}') if [[ "$FREE_MEMORY" -lt 1003600 ]]; then echo "For dokku to build containers, it is strongly suggested that you have 1024 megabytes or more of free memory" echo "If necessary, please consult this document to setup swap: http://dokku.viewdocs.io/dokku/advanced-installation/#vms-with-less-than-1gb-of-memory" fi } install-requirements() { echo "--> Ensuring we have the proper dependencies" apt-get update -qq > /dev/null if [[ $(lsb_release -sr) == "12.04" ]]; then apt-get -qq -y install python-software-properties fi } install-dokku() { if [[ -n $DOKKU_BRANCH ]]; then install-dokku-from-source "origin/$DOKKU_BRANCH" elif [[ -n $DOKKU_TAG ]]; then local DOKKU_SEMVER="${DOKKU_TAG//v}" major=$(echo "$DOKKU_SEMVER" | awk '{split($0,a,"."); print a[1]}') minor=$(echo "$DOKKU_SEMVER" | awk '{split($0,a,"."); print a[2]}') patch=$(echo "$DOKKU_SEMVER" | awk '{split($0,a,"."); print a[3]}') # 0.3.13 was the first version with a debian package if [[ "$major" -eq "0" ]] && [[ "$minor" -eq "3" ]] && [[ "$patch" -ge "13" ]]; then install-dokku-from-package "$DOKKU_SEMVER" echo "--> Running post-install dependency installation" dokku plugins-install-dependencies # 0.4.0 implemented a `plugin` plugin elif [[ "$major" -eq "0" ]] && [[ "$minor" -ge "4" ]] && [[ "$patch" -ge "0" ]]; then install-dokku-from-package "$DOKKU_SEMVER" echo "--> Running post-install dependency installation" sudo -E dokku plugin:install-dependencies --core else install-dokku-from-source "$DOKKU_TAG" fi else install-dokku-from-package echo "--> Running post-install dependency installation" sudo -E dokku plugin:install-dependencies --core fi } install-dokku-from-source() { local DOKKU_CHECKOUT="$1" apt-get -qq -y install git make software-properties-common cd /root if [[ ! -d /root/dokku ]]; then git clone "$DOKKU_REPO" /root/dokku fi cd /root/dokku git fetch origin [[ -n $DOKKU_CHECKOUT ]] && git checkout "$DOKKU_CHECKOUT" make install } install-dokku-from-package() { local DOKKU_CHECKOUT="$1" local NO_INSTALL_RECOMMENDS=${DOKKU_NO_INSTALL_RECOMMENDS:=""} if [[ -n $DOKKU_DOCKERFILE ]]; then NO_INSTALL_RECOMMENDS=" --no-install-recommends " fi echo "--> Initial apt-get update" apt-get update -qq > /dev/null apt-get -qq -y install apt-transport-https echo "--> Installing docker" if uname -r | grep -q linode; then echo "--> NOTE: Using Linode? Docker might complain about missing AUFS support." echo " See http://dokku.viewdocs.io/dokku/getting-started/install/linode/" echo " Installation will continue in 10 seconds." sleep 10 fi wget -nv -O - https://get.docker.com/ | sh echo "--> Installing dokku" wget -nv -O - https://packagecloud.io/gpg.key | apt-key add - echo "deb https://packagecloud.io/dokku/dokku/ubuntu/ trusty main" | tee /etc/apt/sources.list.d/dokku.list apt-get update -qq > /dev/null [[ -n $DOKKU_VHOST_ENABLE ]] && echo "dokku dokku/vhost_enable boolean $DOKKU_VHOST_ENABLE" | sudo debconf-set-selections [[ -n $DOKKU_WEB_CONFIG ]] && echo "dokku dokku/web_config boolean $DOKKU_WEB_CONFIG" | sudo debconf-set-selections [[ -n $DOKKU_HOSTNAME ]] && echo "dokku dokku/hostname string $DOKKU_HOSTNAME" | sudo debconf-set-selections [[ -n $DOKKU_SKIP_KEY_FILE ]] && echo "dokku dokku/skip_key_file boolean $DOKKU_SKIP_KEY_FILE" | sudo debconf-set-selections [[ -n $DOKKU_KEY_FILE ]] && echo "dokku dokku/key_file string $DOKKU_KEY_FILE" | sudo debconf-set-selections if [[ -n $DOKKU_CHECKOUT ]]; then # shellcheck disable=SC2086 apt-get -qq -y $NO_INSTALL_RECOMMENDS install "dokku=$DOKKU_CHECKOUT" else # shellcheck disable=SC2086 apt-get -qq -y $NO_INSTALL_RECOMMENDS install dokku fi } main() { export DEBIAN_FRONTEND=noninteractive export DOKKU_REPO=${DOKKU_REPO:-"https://github.com/dokku/dokku.git"} ensure-environment install-requirements install-dokku } main "$@"