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Calico is not a network overlay

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This commit is contained in:
Smaine Kahlouch
2015-10-27 15:42:46 +01:00
parent b98227e9a4
commit f216302f95
24 changed files with 86 additions and 45 deletions
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51
README.md
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@@ -1,7 +1,7 @@
kubernetes-ansible
========
Install and configure a kubernetes cluster including network overlay and optionnal addons.
Install and configure a kubernetes cluster including network plugin and optionnal addons.
Based on [CiscoCloud](https://github.com/CiscoCloud/kubernetes-ansible) work.
### Requirements
@@ -32,6 +32,49 @@ Please ensure that you have enough disk space there (about **1G**).
### Variables
The main variables to change are located in the directory ```environments/[env_name]/group_vars/k8s-cluster.yml```.
### Inventory
Below is an example of an inventory.
Note : The bgp vars (local_as, peers) are not mandatory if the var "peer_with_router" is set to false
```
[downloader]
10.99.0.26
[kube-master]
# NB : the br_addr must be in the {{ calico_pool }} subnet
# it will assign a /24 subnet per node
10.99.0.26 br_addr=10.99.64.1
[etcd]
10.99.0.26
[kube-node]
10.99.0.4
10.99.0.5
10.99.0.6
10.99.0.36
10.99.0.37
[itx2]
10.99.0.26 br_addr=10.99.16.1
10.99.0.4 br_addr=10.99.65.1 local_as=xxxxxxxx
10.99.0.5 br_addr=10.99.66.1 local_as=xxxxxxxx
10.99.0.6 br_addr=10.99.69.1 local_as=xxxxxxxx
[rmv]
10.99.0.36 br_addr=10.99.67.1 local_as=xxxxxxxx
10.99.0.37 br_addr=10.99.68.1 local_as=xxxxxxxx
[k8s-cluster:children]
kube-node
kube-master
[itx2:vars]
peers=[{"router_id": "10.99.0.2", "as": "65xxx"}, {"router_id": "10.99.0.3", "as": "65xxx"}]
[rmv:vars]
peers=[{"router_id": "10.99.0.34", "as": "65xxx"}, {"router_id": "10.99.0.35", "as": "65xxx"}]
```
### Playbook
```
---
@@ -44,7 +87,7 @@ The main variables to change are located in the directory ```environments/[env_n
roles:
- { role: etcd, tags: etcd }
- { role: docker, tags: docker }
- { role: overlay_network, tags: ['calico', 'flannel', 'network'] }
- { role: network_plugin, tags: ['calico', 'flannel', 'network'] }
- { role: dnsmasq, tags: dnsmasq }
- hosts: kube-master
@@ -72,13 +115,13 @@ Kubernetes
-------------------------
### Network Overlay
You can choose between 2 network overlays. Only one must be chosen.
You can choose between 2 network plugins. Only one must be chosen.
* **flannel**: gre/vxlan (layer 2) networking. ([official docs]('https://github.com/coreos/flannel'))
* **calico**: bgp (layer 3) networking. ([official docs]('http://docs.projectcalico.org/en/0.13/'))
The choice is defined with the variable '**overlay_network_plugin**'
The choice is defined with the variable '**kube_network_plugin**'
### Expose a service
There are several loadbalancing solutions.