Class: SmartCloud::Docker

Inherits:
Base
  • Object
show all
Defined in:
lib/smart_cloud/docker.rb

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Logger

configure_logger_for, included, #logger, logger_for

Constructor Details

#initialize ⇒ Docker

Returns a new instance of Docker.



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# File 'lib/smart_cloud/docker.rb', line 4

def initialize
end

Class Method Details

.running? ⇒ Boolean

Below methods are non ssh methods and should be executed on the server only.

Returns:

  • (Boolean) 


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# File 'lib/smart_cloud/docker.rb', line 125

def self.running?
	if system("docker info", [:out, :err] => File::NULL)
		true
	else
		puts "Error: Docker daemon is not running. Have you installed docker? Please ensure docker daemon is running and try again."
		false
	end
end

Instance Method Details

#add_ufw_rules ⇒ Object 



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# File 'lib/smart_cloud/docker.rb', line 72

def add_ufw_rules
	puts '-----> Add the following rules to the end of the file /etc/ufw/after.rules and reload ufw using - sudo ufw reload'
	puts '# BEGIN UFW AND DOCKER
	*filter
	:ufw-user-forward - [0:0]
	:DOCKER-USER - [0:0]
	-A DOCKER-USER -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
	-A DOCKER-USER -m conntrack --ctstate INVALID -j DROP
	-A DOCKER-USER -i eth0 -j ufw-user-forward
	-A DOCKER-USER -i eth0 -j DROP
	COMMIT
	# END UFW AND DOCKER'

	# puts "-----> Adding UFW rules for Docker"
	# interface_name = system("ip route show | sed -e 's/^default via [0-9.]* dev \(\w\+\).*/\1/'")
	# puts interface_name

	# system("sed '/^# BEGIN UFW AND DOCKER/,/^# END UFW AND DOCKER/d' '/etc/ufw/after.rules'")
	# system("sudo tee -a '/etc/ufw/after.rules' > /dev/null <<EOT
	# # BEGIN UFW AND DOCKER
	# *filter
	# :ufw-user-forward - [0:0]
	# :DOCKER-USER - [0:0]
	# -A DOCKER-USER -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
	# -A DOCKER-USER -m conntrack --ctstate INVALID -j DROP
	# -A DOCKER-USER -i eth0 -j ufw-user-forward
	# -A DOCKER-USER -i eth0 -j DROP
	# COMMIT
	# # END UFW AND DOCKER
	# EOT")
	# system("sudo ufw reload")
end

#install ⇒ Object

Installing Docker!

Example:

=> Installation Complete

Arguments:

none



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# File 'lib/smart_cloud/docker.rb', line 14

def install
	ssh = SmartCloud::SSH.new

	puts "-----> Installing Docker"
	commands = [
		"sudo apt-get -y update",
		"sudo apt-get -y install apt-transport-https ca-certificates curl software-properties-common",
		"curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -",
		"sudo apt-key fingerprint 0EBFCD88",
		"sudo add-apt-repository \"deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable\"",
		"sudo apt-get -y update",
		"sudo apt-get -y install docker-ce",
		"sudo usermod -aG docker $USER",
		"docker run --rm hello-world",
		"docker rmi hello-world"
	]
	ssh.run commands

	puts "-----> Installing Docker Compose"
	commands = [
		"sudo curl -L --fail https://github.com/docker/compose/releases/download/1.24.0/run.sh -o /usr/local/bin/docker-compose",
		"sudo chmod +x /usr/local/bin/docker-compose",
		"docker-compose --version",
		"sudo curl -L https://raw.githubusercontent.com/docker/compose/1.24.0/contrib/completion/bash/docker-compose -o /etc/bash_completion.d/docker-compose"
	]
	ssh.run commands

	self.add_ufw_rules

	puts "-----> Installation Complete"
end

#remove_ufw_rules ⇒ Object 



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# File 'lib/smart_cloud/docker.rb', line 105

def remove_ufw_rules
	puts '-----> Remove the following rules at the end of the file /etc/ufw/after.rules and reload ufw using - sudo ufw reload'
	puts '# BEGIN UFW AND DOCKER
	*filter
	:ufw-user-forward - [0:0]
	:DOCKER-USER - [0:0]
	-A DOCKER-USER -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
	-A DOCKER-USER -m conntrack --ctstate INVALID -j DROP
	-A DOCKER-USER -i eth0 -j ufw-user-forward
	-A DOCKER-USER -i eth0 -j DROP
	COMMIT
	# END UFW AND DOCKER'

	# puts "-----> Removing UFW rules for Docker"
	# system("sed '/^# BEGIN UFW AND DOCKER/,/^# END UFW AND DOCKER/d' '/etc/ufw/after.rules'")
	# system("sudo ufw reload")
end

#uninstall ⇒ Object

Uninstalling Docker!

Example:

=> Uninstallation Complete

Arguments:

none



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# File 'lib/smart_cloud/docker.rb', line 53

def uninstall
	ssh = SmartCloud::SSH.new

	puts "-----> Uninstalling Docker Compose"
	ssh.run "sudo rm /usr/local/bin/docker-compose"

	puts "-----> Uninstalling Docker"
	commands = [
		"sudo apt-get purge docker-ce",
		"sudo rm -rf /var/lib/docker"
	]
	ssh.run commands

	self.remove_ufw_rules

	puts "-----> Uninstallation Complete"
	puts "-----> You must delete any edited configuration files manually."
end