Over the years I fell in love with Vagrant and wanted to have the same workflow for ec2, kvm, internal clouds etc..
Therefore Mccloud aims to be the equivalent of vagrant but extending it to use providers:
- aws/ec2
- kvm
- simple scripts
- and of course vagrant itself.
I'm aware vagrant might extend it's providers in the future; still as they are currently not yet implemented I thought I'd share this code with you. As new provider will become available in vagrant they will also be available in mccloud through the vagrant provider
Without the following opensource software this would not be that awesome!
- Vagrant is great for testing machines on your local machines
- Fog is a great fog library for managing cloud systems
- Fission is a gem to interact with vmware fusion machines
Kudos to the authors!
NOTE: mccloud is meant to be complementary to vagrant - we truely love @mitchellh
- Main reason - this code has been around way before there was discussion on vagrant new providers
- Companies are using it now as it supports EC2, KVM, scripts, NOW
- Vagrant is (currently) focused on desktop vm types only - this extends it to server based cloud solution
- Once providers are available in vagrant, you can easily switch: the effort is not in the Mccloudfile or Vagrantfile syntax but in the provisioning
- Vagrant moves away from the 'gem ' support and targets fat installers - I need this code available as a library
- Vagrant new setup requires root to be installed - not what I want
- Vagrant builder (might) replace veewee with new setup - I want to continue working with it now
Bottom line - if vagrant has the new plugin architecture going and documented I'm happy to review again
- You currently need ruby installed. Either use the system ruby or install rvm
- libxml, libxslt and nokogiri
$ gem install mccloud
$ git clone [email protected]:jedi4ever/mccloud.git
$ cd mccloud
# Note when you use rvm , there is an .rvmrc that will set some aliases
$ bundle install
$ bundle exec mccloud
Similar to a Vagrantfile, mccloud has a Mccloudfile where all is configured.
TODO: there is currently no mccloud init as it's hard to guess your preferred options
A mccloudfile is actually a ruby code file with a specific block
Mccloud::Config.run do |config|
end
As mccloud supports multiple providers , the first part you need to do it define the providers you want to use
You can use this provider to create/manage ec2 instances.
As this relies on fog, you first have to create a fog configuration file
$ cat $HOME/.fog
:default:
:aws_access_key_id: <your id here>
:aws_secret_access_key: <your acess key here>
The syntax to use for an ec2
Mccloud::Config.run do |config|
# Define a :aws provider 'aws-us-east'
config.provider.define "aws-us-east" do |provider_config|
#Note: this are option provided to fog for creation
provider_config.provider.options = { }
provider_config.provider.flavor = :aws
# Region in which to create the VM
provider_config.provider.region = "us-east-1"
## Check if necessary keypairs exist
## To speed things up, set it to false
provider_config.provider.check_keypairs = false
## Disable check if required security groups exist
## To speed things up, set it to false
provider_config.provider.check_security_groups = false
## If you share an amazon account with multiple people
## You can use namespaces to separate resources
## All resources will take this prefix
provider_config.provider.namespace = ""
## Fog credential pair to use in .fog file
provider_config.provider.credential = :default
end
end
If using the aws/ec see also the section about defining keystores and keypairs
Useful with machines that are only ssh-able and where you don't have create options
Mccloud::Config.run do |config|
# Define a :host provider 'host-provider' that is ssh-able
config.provider.define "host-provider" do |provider_config|
provider_config.provider.flavor = :host
end
end
Have mccloud pick up your Vagrantfile
Mccloud::Config.run do |config|
# Define a :vagrant provider 'vagrant-provider'
config.provider.define "vagrant-provider" do |provider_config|
provider_config.provider.flavor = :vagrant
end
end
Usefull if your cloud doesn't have an ip, but you can create start,stop, etc... scripts to do the work
Mccloud::Config.run do |config|
datacenter_settings = {
:DATACENTER => 'belgium',
:ENVIRONMENT => 'test'
}
# Define a :script provider 'script-provider'
config.provider.define "script-provider" do |provider_config|
provider_config.provider.flavor = :script
# environment variables to pass to the scripts
# these are passed as MCCLOUD_<varname>
provider_config.provider.variables = datacenter_settings
# No need for a namespace
provider_config.provider.namespace = ""
# location of the start, stop etc.. scripts
provider_config.provider.script_dir = "myscript-provider"
end
end
this works together with veewee that support creating kvm template machines. Like on vagrant, mccloud clones a veewee created vm
config.provider.define "kvm-libvirt" do |config|
config.provider.flavor=:libvirt
config.provider.options={ :libvirt_uri => "qemu+ssh://ubuntu@kvmbox/system" }
config.provider.namespace="test"
end
Currently only used by aws provider. Allows you to define a re-usable name for keypairs for each aws region
config.keypair.define "mccloud" do |key_config|
key_config.keypair.public_key_path = "#{File.join(ENV['HOME'],'.ssh','mccloud_rsa.pub')}"
key_config.keypair.private_key_path = "#{File.join(ENV['HOME'],'.ssh','mccloud_rsa')}"
end
Currently only used by aws provider. Allows you to define multiple keystores for your aws keys
config.keystore.define "aws-us-east-key-store" do |keystore_config|
keystore_config.keystore.provider = "aws-us-east"
keystore_config.keystore.keypairs = [
# :name is the name as it will be displayed on amazon
# :keypair is the named as defined in the mccloudfile
{ :name => "mccloud", :keypair => "mccloud"},
]
end
config.ip.define "ip-demo1" do |config|
config.ip.provider="aws-eu-west"
config.ip.address="46.137.72.170"
config.ip.vmname = "aws-demo1"
end
config.lb.define "mccloud-development-patrick-lb" do |config|
config.lb.provider="aws-eu-west"
config.lb.members=["aws-demo2","aws-demo1"]
config.lb.sorry_members=["aws-demo2"]
end
TODO
Sharing of files is done over rsync because cloud based architectures don't have the ability to mount local folders
vm_config.vm.share_folder("somename", "/source/inthemachinepath", "localmachinepath")
vm_config.vm.bootstrap = "somescript"
vm_config.vm.bootstrap_user = "root"
vm_config.vm.bootstrap_password = "blabla"
vm_config.vm.user = "ubuntu"
vm_config.vm.name
vm_config.vm.port
vm_config.vm.private_key_path
vm_config.vm.public_key_path
vm_config.vm.agent_forwarding
vm_config.vm.autoselection
vm_config.vm.bootstrap
vm_config.vm.bootstrap_user
vm_config.vm.bootstrap_password
vm_config.vm.forward_port
vm.ami
vm.key_name
vm.security_groups = Array
vm.user_data
vm.flavor
vm.user
config.vm.define "demo" do |config|
config.vm.provider="aws-eu-west"
config.vm.ami="ami-e59ca991"
config.vm.flavor="t1.micro"
config.vm.zone="eu-west-1a"
config.vm.user="ubuntu"
config.vm.security_groups=["thesecuritygroup"]
config.vm.key_name="mccloud-key-patrick"
config.vm.bootstrap="definitions/ubuntu/bootstrap-ubuntu-system.sh"
config.vm.private_key_path="keys/mccloud_rsa"
config.vm.public_key_path="keys/mccloud_rsa.pub"
end
this is the way we are currently mounting EBS Volumes with Mccloud. For attaching an EBS volume created from a Snaphot;
# see http://fog.io/1.1.2/rdoc/Fog/Compute/AWS/Servers.html
# and https://github.com/fog/fog/blob/v1.1.2/lib/fog/aws/requests/compute/run_instances.rb
config.vm.create_options = {
:block_device_mapping => [
{ "DeviceName" => "/dev/sdf", "Ebs.SnapshotId" =>
"snap-d056d786", "Ebs.DeleteOnTermination" => true } ] }
Or, for attaching a newly created EBS volume:
config.vm.create_options = {
:block_device_mapping => [
{ "DeviceName" => "/dev/sdf", "Ebs.VolumeSize" => "100",
"Ebs.DeleteOnTermination" => false }
]
}
The mounting we then do our provision.sh script:
echo "/dev/sdf1 /mnt/ebs ext4 defaults 0 0" >> /etc/fstab
mkdir -p /mnt/ebs
mount -a
config.vm.define "compute1" do |vm_config|
vm_config.vm.provider = "vagrant"
end
config.vm.define "mycoolhost.com" do |config|
config.vm.provider=:hosts
config.vm.ip_address="mycoolhost.com"
config.vm.user="ubuntu"
config.vm.port = "2222"
config.vm.bootstrap = "bootstrap/centos-603"
config.vm.agent_forwarding = true
end
config.vm.define "backend" do |config|
config.vm.provider="juno-libvirt"
config.vm.create_options={
:network_interface_type => "bridge",
:volume_template_name => "test-baseimage.img",
:cpus => "3",
:memory_size => 2*1024*1024, #2 GB
}
config.vm.user="ubuntu"
config.vm.bootstrap="definitions/ubuntu/bootstrap-ubuntu-system.sh"
config.vm.private_key_path="keys/mccloud_rsa"
config.vm.public_key_path="keys/mccloud_rsa.pub"
end
need to check this
You can use multiple provisioners per vm
manifest_file
manifest_path
module_paths = Array
pp_path
options
vm_config.vm.provision :puppet do |puppet|
puppet_flags = "--verbose --show_diff"
puppet.manifest_file = "site.pp"
puppet.pp_path = "/var/tmp/puppet"
puppet.manifests_path = "puppet/manifests"
puppet.module_path = [ "puppet/modules" ,"puppet/my-modules"]
puppet.options = puppet_flags
end
cookbooks_path
roles_path
provisioning_path
data_bags_path
encrypted_data_bag_secret_key_path
json
json_erb
clean_after_run
roles
mccloud server is added to json
add_role(name)
add_recipe(name)
# Read chef solo nodes files
require 'chef'
nodes = []
Dir["data_bags/node/*.json"].each do |n|
nodes << JSON.parse(IO.read(n))
end
nodes.each do |n|
config.vm.define n.name do |vm_config|
vm_config.vm.provider = "host"
vm_config.vm.ip_address = n.automatic_attrs[:ipaddress]
vm_config.vm.user = n.automatic_attrs[:sudo_user]
vm_config.vm.bootstrap = File.join("bootstrap","bootstrap-#{n.automatic_attrs[:platform]}.sh")
vm_config.vm.bootstrap_user = n.automatic_attrs[:bootstrap_user]
vm_config.vm.bootstrap_password = n.automatic_attrs[:bootstrap_password]
vm_config.vm.provision :chef_solo do |chef|
chef.cookbooks_path = [ "cookbooks", "site-cookbooks" ]
chef.roles_path = "roles"
chef.data_bags_path = "data_bags"
chef.encrypted_data_bag_secret_key_path = "my_databag_secret"
chef.clean_after_run = false
chef.json.merge!(n.default_attrs)
chef.json.merge!(n.automatic_attrs)
chef.json.merge!(n.override_attrs)
chef.add_role n.chef_environment
chef.add_role n.automatic_attrs[:platform]
n.run_list.run_list_items.each do |r|
chef.add_role r.name if r.type == :role
chef.add_recipe r.name if r.type == :recipe
end
end #end provisioner
end #end vm define
end # nodes.each
# Using ips in erb json
chef.json.merge!({
:logger => {
:redis_host_ip => "<%= private_ips['frontend'] %>"
}
})
# Defining a default node
def default_node(chef)
chef.add_recipe("ntp")
chef.add_recipe("timezone")
chef.json.merge!({
:nagios_host_ip => "<%= private_ips['monitoring'] %>",
:ruby => {
:version => "1.9.2",
:patch_level => "p180"}}
})
end
option command.sudo = true|false
config.vm.provision :shell do |command|
command.inline="uptime"
end
config.vm.provision :shell do |command|
command.path="script.sh"
end
Some functions are there in the CLI, but they are left overs from previous coding sessions.
Tasks:
mccloud version # Prints the Mccloud version information
mccloud bootstrap [NAME] [FILENAME] # Executes the bootstrap sequence
mccloud destroy [NAME] # Destroys the machine
mccloud forward [NAME] # Forwards ports from a machine to localhost
mccloud halt [NAME] # Shutdown the machine
mccloud help [TASK] # Describe available tasks or one specific task
mccloud image # Subcommand to manage images
mccloud up [NAME] # Starts the machine and provisions it
mccloud provision [NAME] # Provisions the machine
mccloud reload [NAME] # Reboots the machine
mccloud ssh [NAME] [COMMAND] # Ssh-shes into the box
mccloud status [name] # Shows the status of the current Mccloud environment
mccloud lb # Subcommand to manage Loadbalancers
mccloud balance [LB-NAME] # Balances loadbalancers
mccloud sorry [LB-NAME] # Puts loadbalancers in a sorry state
mccloud ip # Subcommand to manage IP's
mccloud ips [NAME] # Associate IP addresses
mccloud define NAME TEMPLATE-NAME # Creates a new definition based on a tempate
mccloud init # Initializes a new Mccloud project
mccloud keypair # Subcommand to manage keypairs
mccloud keystore # Subcommand to manage keystores
mccloud package [NAME] # Packages the machine
mccloud template # Subcommand to manage templates
mccloud vm # Subcommand to manage vms
this is eternal beta sofware . Don't trust it:) And don't complain if it removes all your EC instances at once....