tsuru Installer

tsuru Installer provides a way to install tsuru API and it’s required components locally or on remote hosts.

Note

tsuru Installer is distributed inside the tsuru client. To use it, you must first install the client. Check the tsuru client documentation for a full reference, including how to install it: https://tsuru-client.readthedocs.org.

To install tsuru locally, one can simply run (requires VirtualBox):

$ tsuru install

After a couple of minutes you will have a full tsuru installation, inside a local VirtualBox VM, where you can start deploying your applications and experience the tsuru workflow.

How it works

tsuru installer uses docker machine to provision docker hosts, this means that it’s possible to use any of the core or 3rd party docker machine drivers on the installation.

It will create a directory inside your ~/.tsuru/installs, with every file created and needed by docker machine to manage and provision your hosts: certificates, configuration files, your CA file etc.

After provisioning the hosts, the installer will install and start every tsuru component as a docker container on those hosts.

Docker Machine drivers

Docker Machine drivers are responsible for provisioning docker hosts on different iaas’. The installer comes bundled with all docker machine core drivers and also supports the 3rd party ones; just make sure they are available in your $PATH.

For a list of 3rd party plugins supported by the community check here.

What is installed

Currently, the installer installs the following components:

  • MongoDB

  • Redis

  • PlanB router

  • Docker Registry

  • tsuru API

After all basic components are installed, it will:

  • Create a root user on tsurud

  • Point your tsuru client to the newly created api using tsuru target-set

  • Configure a docker node to run your applications

  • Create and deploy a tsuru-dashboard

Security

The installer needs to issue commands to the tsuru api during the installation and, to do so, the host is configured to have the 8080/tcp port opened to the internet. This is probably not recommended and should be changed as soon as possible after the installation.

It is also recommended to change the root user login and password that the installer uses to bootstrap the installation.

Customizing the installation

The install command accepts a configuration file as parameter to customize the installation.

For example, to install tsuru on amazon ec2, one could create the following file:

driver:
    name: amazonec2
    options:
        amazonec2-access-key: myAmazonAccessKey
        amazonec2-secret-key: myAmazonSecretKey
        amazonec2-vpc-id: vpc-abc1234
        amazonec2-subnet-id: subnet-abc1234

And pass it to the install command as:

$ tsuru install -c config.yml

Configuration reference

Note

tsuru uses a colon to represent nesting in YAML. So, whenever this document says something like key1:key2, it refers to the value of the key2 that is nested in the block that is the value of key1. For example, database:url means:

database:
  url: <value>

name

The name of the installation, e.g, tsuru-ec2, tsuru-local. This will be the name of the directory created inside ~/.tsuru/installs and the tsuru target name for the api.

docker-hub-mirror

Url of a docker hub mirror used to fetch the components docker images. The default is to use no mirror.

ca-path

A path to a directory containing a ca.pem and ca-key.pem files that are going to be used to sign certificates used by docker and docker registry. If not set, one will be created.

driver:name

Name of the driver to be used by the installer. This can be any core or 3rd party driver supported by docker machine. If a 3rd party driver name is used, it’s binary must be available on the user path. The default is to use virtualbox.

driver:options

Under this namespace every driver parameters can be set. Refer to the driver configuration for more information on what parameter are available. For exemple, the AWS docker machine driver accepts the --amazonec2-secret-key argument and this can be set using driver:options:amazonec2-secret-key entry.