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a few more things... #32

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Mar 11, 2015
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a few more things... #32

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0800339
fixed typo
albertocsm Mar 10, 2015
cad19b8
a few more things...
AntonioMeireles Mar 9, 2015
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34 changes: 25 additions & 9 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -43,7 +43,7 @@ some points to keep note too:

- If you want to make that persistent across shells and reboots do instead...

`./kubLocalSetup shellinit >> ˜/.bash_profile`
`./kubLocalSetup shellinit >> ~/.bash_profile`
- If you want to validate the environment variables we just set, run...

`./kubLocalSetup shellinit`
Expand Down Expand Up @@ -145,6 +145,12 @@ All aspects of your cluster setup can be customized with environment variables.
You can create/update a *~/.dockercfg* file at any time
by running `docker login <registry>.<domain>`. All nodes will get it automatically,
at 'vagrant up', given any modification or update to that file.

- **ETCD_CLUSTER_SIZE** sets the number of nodes in the default built-in etcd
cluster.

Defaults to **3** (or the total number of nodes of the cluster if lower).

- **KUBERNETES_VERSION** defines the specific kubernetes version being used.

Currently we are defaulting to **0.11.0**, which is the last released version.
Expand All @@ -169,20 +175,30 @@ $(./kubLocalSetup shellinit)
### Set-up cluster

```
vagrant up master
NODE_MEM=2048 NODE_CPUS=1 NUM_INSTANCES=2 vagrant up
```

Wait until ```master``` has finished downloading Kubernetes binaries and provisioned a Docker mirror cache. This can take a few minutes depending on your Internet speed. After that, bring up a couple minions:
This will start the `master` and 2 `minion` nodes. On them a local etcd
cluster will be bootstrapped, Kubernetes binaries will be downloaded and
all needed services started, as a *bonus* a docker mirror cache will be
provisioned in the `master`, to speed up container provisioning. This
can take a little bit depending on your Internet connection speed.

```
NODE_MEM=2048 NODE_CPUS=1 NUM_INSTANCES=2 vagrant up
```
Please do note that, at any time, you can increase the number of running
`minion` VMs by increasing the `NUM_INSTANCES` value in subsequent
`vagrant up` invocations.

### Usage

## Usage
Congratulations! You're now ready to use your Kubernetes cluster.

You're now ready to use your Kubernetes cluster.
If you just want to test something simple, start with [Kubernetes examples]
(https://github.com/GoogleCloudPlatform/kubernetes/blob/master/examples/).

If you just want to test something simple, start with [Kubernetes examples](https://github.com/GoogleCloudPlatform/kubernetes/blob/master/examples/).
For a more elaborate scenario [here]
(https://github.com/pires/kubernetes-elasticsearch-cluster) you'll find all
you need to get a scalable Elasticsearch cluster on top of Kubernetes in no
time.

## Licensing

Expand Down
48 changes: 33 additions & 15 deletions Vagrantfile
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Original file line number Diff line number Diff line change
@@ -1,6 +1,17 @@
# -*- mode: ruby -*-
# vi: set ft=ruby :

require 'fileutils'
require 'net/http'
require 'open-uri'

class Module
def redefine_const(name, value)
__send__(:remove_const, name) if const_defined?(name)
const_set(name, value)
end
end

required_plugins = %w(vagrant-triggers)
required_plugins.each do |plugin|
need_restart = false
Expand All @@ -15,17 +26,6 @@ end
VAGRANTFILE_API_VERSION = "2"
Vagrant.require_version ">= 1.6.0"

require 'fileutils'
require 'net/http'
require 'open-uri'

class Module
def redefine_const(name, value)
__send__(:remove_const, name) if const_defined?(name)
const_set(name, value)
end
end

MASTER_YAML = File.join(File.dirname(__FILE__), "master.yaml")
NODE_YAML = File.join(File.dirname(__FILE__), "node.yaml")

Expand Down Expand Up @@ -65,9 +65,24 @@ MASTER_CPUS = ENV['MASTER_CPUS'] || 1
NODE_MEM= ENV['NODE_MEM'] || 1024
NODE_CPUS = ENV['NODE_CPUS'] || 1

ETCD_CLUSTER_SIZE = ENV['ETCD_CLUSTER_SIZE'] || 3

SERIAL_LOGGING = (ENV['SERIAL_LOGGING'].to_s.downcase == 'true')
GUI = (ENV['GUI'].to_s.downcase == 'true')

(1..(NUM_INSTANCES.to_i + 1)).each do |i|
case i
when 1
ETCD_SEED_CLUSTER = ""
hostname = "master"
else
hostname = ",node-%02d" % (i - 1)
end
if i <= ETCD_CLUSTER_SIZE
ETCD_SEED_CLUSTER.concat("#{hostname}=http://172.17.8.#{i+100}:2380")
end
end

Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
# always use Vagrants' insecure key
config.ssh.insert_key = false
Expand All @@ -77,6 +92,11 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
config.vm.box_version = ">= #{COREOS_VERSION}"
config.vm.box_url = "#{upstream}/coreos_production_vagrant.json"

config.trigger.after [:up, :resume] do
info "making sure ssh agent has the default vagrant key..."
system "ssh-add ~/.vagrant.d/insecure_private_key"
end

["vmware_fusion", "vmware_workstation"].each do |vmware|
config.vm.provider vmware do |v, override|
override.vm.box_url = "#{upstream}/coreos_production_vagrant_vmware_fusion.json"
Expand Down Expand Up @@ -184,13 +204,11 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
inline: <<-EOF
sed -i "s,__RELEASE__,v#{KUBERNETES_VERSION},g" /tmp/vagrantfile-user-data
sed -i "s,__CHANNEL__,v#{CHANNEL},g" /tmp/vagrantfile-user-data
sed -i "s,__NAME__,#{hostname},g" /tmp/vagrantfile-user-data
sed -i "s|__ETCD_SEED_CLUSTER__|#{ETCD_SEED_CLUSTER}|g" /tmp/vagrantfile-user-data
mv /tmp/vagrantfile-user-data /var/lib/coreos-vagrant/
EOF
end
end
end
config.trigger.after [:up, :resume] do
info "making sure ssh agent has the default vagrant key..."
system "ssh-add ~/.vagrant.d/insecure_private_key"
end
end
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