This document describes how to create a private PaaS service using tsuru and docker.
This document assumes that tsuru is being installed on a Ubuntu 13.04 64-bit machine. If you want to use Ubuntu LTS vesion see docker documentation on how to install it. You can use equivalent packages for beanstalkd, git, MongoDB and other tsuru dependencies. Please make sure you satisfy minimal version requirements.
You can use the scripts bellow to quick install tsuru with docker:
$ curl -O https://raw.github.com/globocom/tsuru/master/misc/docker-setup.bash; bash docker-setup.bash
Or follow this steps:
You can integrate any DNS server with tsuru. Here: http://docs.tsuru.io/en/latest/misc/dns-forwarders.html you can find a example of how to install a DNS server integrated with tsuru
Install docker:
$ wget -qO- https://get.docker.io/gpg | sudo apt-key add -
$ echo 'deb http://get.docker.io/ubuntu docker main' | sudo tee /etc/apt/sources.list.d/docker.list
$ sudo apt-get update
$ sudo apt-get install lxc-docker
Then edit /etc/init/docker.conf to start docker on tcp://127.0.0.1:4243:
$ cat > /etc/init/docker.conf <<EOF
description "Docker daemon"
start on filesystem and started lxc-net
stop on runlevel [!2345]
respawn
script
/usr/bin/docker -H tcp://127.0.0.1:4243 -d
end script
EOF
Tsuru needs MongoDB stable, distributed by 10gen. It’s pretty easy to get it running on Ubuntu
Tsuru uses Redis to communicate new routes. By default it points to a locally installed Redis server. Install on Ubuntu via apt-get:
$ sudo apt-get install redis-server
If you will use a remote Redis server, skip this and point your server on /etc/tsuru/tsuru.conf
Tsuru uses Beanstalkd as a work queue. Install the latest version, by doing this:
$ sudo apt-get install beanstalkd
Configuring beanstalkd to start, edit the /etc/default/beanstalkd and uncomment this line:
START=yes
Then start beanstalkd:
$ sudo service beanstalkd start
Tsuru uses Gandalf to manage Git repositories, you can install it from Tsuru PPA:
$ sudo apt-add-repository ppa:tsuru/ppa
$ sudo apt-get update
$ sudo apt-get install gandalf-server
Tsuru depends on some Git hooks, you will need to create the bare template directory, and download the hook from Tsuru repository:
$ sudo mkdir -p /home/git/bare-template/hooks
$ curl https://raw.github.com/globocom/tsuru/master/misc/git-hooks/post-receive | sudo tee /home/git/bare-template/hooks/post-receive
$ sudo chown -R git:git /home/git/bare-template
$ cat > /etc/gandalf.conf <<EOF
bin-path: /usr/bin/gandalf-ssh
database:
url: 127.0.0.1:27017
name: gandalf
git:
bare:
location: /var/lib/gandalf/repositories
template: /home/git/bare-template
host: localhost
bind: 127.0.0.1:8000
EOF
Change the host: localhost to your base domain.
This one is easy:
$ sudo start git-daemon
$ sudo start gandalf-server
You can also install Tsuru API and Collector from Tsuru PPA:
$ sudo apt-get install tsuru-server gandalf-server
Before running tsuru, you must configure it. By default, tsuru will look for the configuration file in the /etc/tsuru/tsuru.conf path. You can check a sample configuration file and documentation for each tsuru setting in the “Configuring tsuru” page.
The debian package will create the file, you may open it and customize some settings, or you can download the sample configuration file from Github:
$ sudo curl -sL https://raw.github.com/globocom/tsuru/master/etc/tsuru-docker.conf -o /etc/tsuru/tsuru.conf
By default, this configuration will use the tsuru image namespace, so if you try to create an application using python platform, tsuru will search for an image named tsuru/python. You can change this default behavior by changing the docker:repository-namespace config field.
You’ll also need to enable Tsuru API, Collector and SSH agent on /etc/default/tsuru-server:
$ cat > /etc/default/tsuru-server <<EOF
TSR_API_ENABLED=yes
TSR_COLLECTOR_ENABLED=yes
TSR_SSH_AGENT_ENABLED=yes
TSR_SSH_AGENT_USER=ubuntu
TSR_SSH_AGENT_LISTEN=127.0.0.1:4545
TSR_SSH_AGENT_PRIVATE_KEY=/var/lib/tsuru/.ssh/id_rsa
EOF
Now that you have tsr properly installed, and you configured tsuru, you’re three steps away from running it.
Start api, collector and docker-ssh-agent
$ sudo start tsuru-server-collector
$ sudo start tsuru-server-api
$ sudo start tsuru-ssh-agent
You can see the logs in:
$ sudo tail -f /var/log/syslog
Now it’s time to import the Docker images for your platforms. You can build your own docker image, or you can use our images as following:
# Add an alias for docker to make your life easier (add it to your .bash_profile)
$ alias docker='docker -H 127.0.0.1:4243'
# Build the wanted platform, here we are adding the static platform(webserver)
$ docker build -t tsuru/static https://raw.github.com/flaviamissi/basebuilder/master/static/Dockerfile
# Now you can see if your image is ready - you should see the tsuru/static as an repository
$ docker images
# If you want all the other platforms, just run the command bellow
$ for image in nodejs php python ruby; do docker build -t tsuru/$image https://raw.github.com/flaviamissi/basebuilder/master/$image/Dockerfile;done
# To see if everything went well - just take a look in the repository column
$ docker images
# Now create your apps!
Congratulations! At this point you should have a working tsuru server running on your machine, follow the tsuru client usage guide to start build your apps.
Here you will find a complete step-by-step example of how to install a mysql service with tsuru: http://docs.tsuru.io/en/latest/services/mysql-example.html