A collection of playbooks for deploying/managing/upgrading a Kubernetes cluster onto machines, they are fully automated command to bring up a Kubernetes cluster on bare-metal or VMs.
Feature list:
- Support Kubernetes v1.10.0+.
- Highly available Kubernetes cluster.
- Full of the binaries installation.
- Kubernetes addons:
- Promethues Monitoring.
- EFK Logging.
- Metrics Server.
- NGINX Ingress Controller.
- Kubernetes Dashboard.
- Support container network:
- Calico.
- Flannel.
- Support container runtime:
- Docker.
- NVIDIA-Docker.(Require NVIDIA driver and CUDA 9.0+)
- Containerd.
- CRI-O.
In this section you will deploy a cluster via vagrant.
Prerequisites:
- Ansible version: v2.5 (or newer).
- Vagrant: >= 2.0.0.
- VirtualBox: >= 5.0.0.
- Mac OS X need to install
sshpass
tool.
$ brew install http://git.io/sshpass.rb
The getting started guide will use Vagrant with VirtualBox to deploy a Kubernetes cluster onto virtual machines. You can deploy the cluster with a single command:
$ ./hack/setup-vms
Cluster Size: 1 master, 2 worker.
VM Size: 1 vCPU, 2048 MB
VM Info: ubuntu16, virtualbox
CNI binding iface: eth1
Start to deploy?(y):
- You also can use
sudo ./hack/setup-vms -p libvirt -i eth1
command to deploy the cluster onto KVM.
If you want to access API you need to create RBAC object define the permission of role. For example using cluster-admin
role:
$ kubectl create clusterrolebinding open-api --clusterrole=cluster-admin --user=system:anonymous
Login the addon's dashboard:
- Dashboard: https://API_SERVER:8443/api/v1/namespaces/kube-system/services/https:kubernetes-dashboard:/proxy/
- Logging: https://API_SERVER:8443/api/v1/namespaces/kube-system/services/kibana-logging/proxy/
As of release 1.7 Dashboard no longer has full admin privileges granted by default, so you need to create a token to access the resources:
$ kubectl -n kube-system create sa dashboard
$ kubectl create clusterrolebinding dashboard --clusterrole cluster-admin --serviceaccount=kube-system:dashboard
$ kubectl -n kube-system get sa dashboard -o yaml
apiVersion: v1
kind: ServiceAccount
metadata:
creationTimestamp: 2017-11-27T17:06:41Z
name: dashboard
namespace: kube-system
resourceVersion: "69076"
selfLink: /api/v1/namespaces/kube-system/serviceaccounts/dashboard
uid: 56b880bf-d395-11e7-9528-448a5ba4bd34
secrets:
- name: dashboard-token-vg52j
$ kubectl -n kube-system describe secrets dashboard-token-vg52j
...
token: eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJrdWJlcm5ldGVzL3NlcnZpY2VhY2NvdW50Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9uYW1lc3BhY2UiOiJrdWJlLXN5c3RlbSIsImt1YmVybmV0ZXMuaW8vc2VydmljZWFjY291bnQvc2VjcmV0Lm5hbWUiOiJkYXNoYm9hcmQtdG9rZW4tdmc1MmoiLCJrdWJlcm5ldGVzLmlvL3NlcnZpY2VhY2NvdW50L3NlcnZpY2UtYWNjb3VudC5uYW1lIjoiZGFzaGJvYXJkIiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9zZXJ2aWNlLWFjY291bnQudWlkIjoiNTZiODgwYmYtZDM5NS0xMWU3LTk1MjgtNDQ4YTViYTRiZDM0Iiwic3ViIjoic3lzdGVtOnNlcnZpY2VhY2NvdW50Omt1YmUtc3lzdGVtOmRhc2hib2FyZCJ9.bVRECfNS4NDmWAFWxGbAi1n9SfQ-TMNafPtF70pbp9Kun9RbC3BNR5NjTEuKjwt8nqZ6k3r09UKJ4dpo2lHtr2RTNAfEsoEGtoMlW8X9lg70ccPB0M1KJiz3c7-gpDUaQRIMNwz42db7Q1dN7HLieD6I4lFsHgk9NPUIVKqJ0p6PNTp99pBwvpvnKX72NIiIvgRwC2cnFr3R6WdUEsuVfuWGdF-jXyc6lS7_kOiXp2yh6Ym_YYIr3SsjYK7XUIPHrBqWjF-KXO_AL3J8J_UebtWSGomYvuXXbbAUefbOK4qopqQ6FzRXQs00KrKa8sfqrKMm_x71Kyqq6RbFECsHPA
Copy and paste the
token
to dashboard.
In this section you will manually deploy a cluster on your machines.
Prerequisites:
- Ansible version: v2.5 (or newer).
- Linux distributions: Ubuntu 16+/Debian/CentOS 7.x.
- All Master/Node should have password-less access from
deploy
node.
For machine example:
IP Address | Role | CPU | Memory |
---|---|---|---|
172.16.35.9 | vip | - | - |
172.16.35.10 | k8s-m1 | 4 | 8G |
172.16.35.11 | k8s-n1 | 4 | 8G |
172.16.35.12 | k8s-n2 | 4 | 8G |
172.16.35.13 | k8s-n3 | 4 | 8G |
Add the machine info gathered above into a file called inventory/hosts.ini
. For inventory example:
[etcds]
k8s-m1
k8s-n[1:2]
[masters]
k8s-m1
k8s-n1
[nodes]
k8s-n[1:3]
[kube-cluster:children]
masters
nodes
Set the variables in group_vars/all.yml
to reflect you need options. For example:
# overide kubernetes version(default: 1.10.6)
kube_version: 1.11.2
# container runtime, supported: docker, nvidia-docker, containerd.
container_runtime: docker
# container network, supported: calico, flannel.
cni_enable: true
container_network: calico
cni_iface: ''
# highly available variables
vip_interface: ''
vip_address: 172.16.35.9
# etcd variables
etcd_iface: ''
# kubernetes extra addons variables
enable_dashboard: true
enable_logging: false
enable_monitoring: false
enable_ingress: false
enable_metric_server: true
# monitoring grafana user/password
monitoring_grafana_user: "admin"
monitoring_grafana_password: "p@ssw0rd"
If everything is ready, just run cluster.yml
playbook to deploy the cluster:
$ ansible-playbook -i inventory/hosts.ini cluster.yml
And then run addons.yml
to create addons:
$ ansible-playbook -i inventory/hosts.ini addons.yml
Verify that you have deployed the cluster, check the cluster as following commands:
$ kubectl -n kube-system get po,svc
NAME READY STATUS RESTARTS AGE IP NODE
po/haproxy-master1 1/1 Running 0 2h 172.16.35.10 k8s-m1
...
Finally, if you want to clean the cluster and redeploy, you can reset the cluster by reset-cluster.yml
playbook.:
$ ansible-playbook -i inventory/hosts.ini reset-cluster.yml
Pull requests are always welcome!!! I am always thrilled to receive pull requests.