Readme v2
This commit is contained in:
Smaine Kahlouch
parent
89a25fa3fa
commit
e74ad80fe4
5 changed files with 69 additions and 32 deletions
72
README.md
72
README.md
|
|
@ -4,17 +4,58 @@ kubernetes-ansible
|
|||
Install and configure a kubernetes cluster including network overlay and optionnal addons.
|
||||
Based on [CiscoCloud](https://github.com/CiscoCloud/kubernetes-ansible) work.
|
||||
|
||||
Requirements
|
||||
------------
|
||||
### Requirements
|
||||
Tested on debian Jessie and Ubuntu.
|
||||
The target servers must have access to the Internet in order to pull docker imaqes
|
||||
|
||||
Ansible v1.9.x
|
||||
|
||||
### Components
|
||||
* [kubernetes]('https://github.com/kubernetes/kubernetes/releases') v1.0.6
|
||||
* [etcd]('https://github.com/coreos/etcd/releases') v2.2.0
|
||||
* [calicoctl]('https://github.com/projectcalico/calico-docker/releases') v0.5.1
|
||||
* [flanneld]('https://github.com/coreos/flannel/releases') v0.5.3
|
||||
* [docker-gc]('https://github.com/spotify/docker-gc')
|
||||
|
||||
|
||||
Ansible
|
||||
-------------------------
|
||||
## Variables
|
||||
### Download binaries
|
||||
A role allows to download required binaries which will be stored in a directory defined by the variable
|
||||
'local_release_dir' (by default /tmp).
|
||||
Please ensure that you have enough disk space there (about 1G).
|
||||
|
||||
## Run ansible playbook
|
||||
Note: Whenever you'll need to change the version of a software, you'll have to erase the content of this directory.
|
||||
|
||||
|
||||
### Variables
|
||||
|
||||
### Playbook
|
||||
```
|
||||
---
|
||||
- hosts: downloader
|
||||
sudo: no
|
||||
roles:
|
||||
- { role: download, tags: download }
|
||||
|
||||
- hosts: k8s-cluster
|
||||
roles:
|
||||
- { role: etcd, tags: etcd }
|
||||
- { role: docker, tags: docker }
|
||||
- { role: overlay_network, tags: ['calico', 'flannel', 'network'] }
|
||||
- { role: dnsmasq, tags: dnsmasq }
|
||||
|
||||
- hosts: kube-master
|
||||
roles:
|
||||
- { role: kubernetes/master, tags: master }
|
||||
- { role: addons, tags: addons }
|
||||
|
||||
- hosts: kube-node
|
||||
roles:
|
||||
- { role: kubernetes/node, tags: node }
|
||||
```
|
||||
|
||||
### Run
|
||||
It is possible to define variables for different environments.
|
||||
For instance, in order to deploy the cluster on 'dev' environment run the following command.
|
||||
```
|
||||
|
|
@ -23,16 +64,31 @@ ansible-playbook -i environments/dev/inventory cluster.yml
|
|||
|
||||
Kubernetes
|
||||
-------------------------
|
||||
## Check cluster status
|
||||
### Check cluster status
|
||||
|
||||
### Network Overlay
|
||||
You can choose between 2 network overlays. Only one must be chosen.
|
||||
flannel: gre/vxlan (layer 2) networking
|
||||
calico: bgp (layer 3) networking.
|
||||
|
||||
### Expose a service
|
||||
There are several loadbalancing solution.
|
||||
The main ones i found suitable for kubernetes are [Vulcand]('http://vulcand.io/') and [Haproxy]('http://www.haproxy.org/')
|
||||
|
||||
My cluster is working with haproxy and kubernetes services are configured with the loadbalancing type 'nodePort'.
|
||||
eg: each node opens the same tcp port and forwards the traffic to the target pod wherever it is located.
|
||||
|
||||
Then Haproxy can be configured to request kubernetes's api in order to loadbalance on the proper tcp port on the nodes.
|
||||
|
||||
Please refer to the proper kubernetes documentation on [Services]('https://github.com/kubernetes/kubernetes/blob/release-1.0/docs/user-guide/services.md')
|
||||
|
||||
Known issues
|
||||
-------------
|
||||
## Node reboot and Calico
|
||||
### Node reboot and Calico
|
||||
|
||||
## Monitoring addon
|
||||
### Monitoring addon
|
||||
|
||||
## Etcd failover
|
||||
### Etcd failover
|
||||
|
||||
Author Information
|
||||
------------------
|
||||
|
|
|
|||
|
|
@ -31,11 +31,3 @@
|
|||
# docker login --username={{ dockerhub_user }}
|
||||
# --password={{ dockerhub_pass }}
|
||||
# --email={{ dockerhub_email }}
|
||||
|
||||
#- pause: prompt='WARNING The next task will remove all exited containers, enter to continue'
|
||||
#
|
||||
#- name: Purge all exited containers
|
||||
# shell: >
|
||||
# if [ ! -z "$(docker ps -aq -f status=exited)" ]; then
|
||||
# docker rm $(docker ps -aq -f status=exited);
|
||||
# fi
|
||||
|
|
|
|||
|
|
@ -1,7 +1,4 @@
|
|||
---
|
||||
- name: Configure debian distribution apt repository
|
||||
template: src=debian.list.j2 dest=/etc/apt/sources.list.d/{{ ansible_distribution_release }}.list
|
||||
|
||||
- name: Install prerequisites for https transport
|
||||
apt: pkg={{ item }} state=present update_cache=yes
|
||||
with_items:
|
||||
|
|
@ -28,6 +25,8 @@
|
|||
|
||||
- name: Copy Docker garbage collection script
|
||||
copy: src=docker-gc dest={{ bin_dir }}/docker-gc mode=700
|
||||
when: enable_docker_gc
|
||||
|
||||
- name: Copy Cron for garbage collection script
|
||||
template: src=cron_docker-gc.j2 dest=/etc/cron.hourly/cron_docker-gc
|
||||
when: enable_docker_gc
|
||||
|
|
|
|||
|
|
@ -1,10 +0,0 @@
|
|||
deb http://debian.arkena.net/debian/ {{ ansible_distribution_release }} main contrib non-free
|
||||
deb-src http://debian.arkena.net/debian/ {{ ansible_distribution_release }} main contrib non-free
|
||||
deb http://debian.arkena.net/debian/ {{ ansible_distribution_release }}-updates main contrib non-free
|
||||
deb-src http://debian.arkena.net/debian/ {{ ansible_distribution_release }}-updates main contrib non-free
|
||||
deb http://debian.arkena.net/debian-security/ {{ ansible_distribution_release }}/updates main contrib non-free
|
||||
deb-src http://debian.arkena.net/debian-security {{ ansible_distribution_release }}/updates main contrib non-free
|
||||
deb http://debian.arkena.net/debian/ {{ ansible_distribution_release }}-backports main contrib
|
||||
deb-src http://debian.arkena.net/debian/ {{ ansible_distribution_release }}-backports main contrib
|
||||
deb http://debian.arkena.net/debian-smartjog/ {{ ansible_distribution_release }} smartjog
|
||||
deb-src http://debian.arkena.net/debian-smartjog/ {{ ansible_distribution_release }} smartjog
|
||||
|
|
@ -1,4 +1,4 @@
|
|||
---
|
||||
dockerhub_user: arkenadev
|
||||
dockerhub_pass: 4rk3n4d3v
|
||||
dockerhub_email: smaine.kahlouch@gmail.com
|
||||
#dockerhub_user:
|
||||
#dockerhub_pass:
|
||||
#dockerhub_email:
|
||||
|
|
|
|||
Loading…
Reference in a new issue