Simple as a shell script. It allow you to deploy easily k8s for tests or learn purposes.
With Simplekube, you can install Kubernetes on Linux servers without have to plug with any cloud provider.
Just take a Linux empty box, clone the git repo, launch the script and have fun with k8s ! It come with few things like Kube-DNS, Calico, Helm, Firewall and IPv6 !
If you need, you can easily add new workers (from multi-clouds) !
# please change this value :
hostIP="__PUBLIC_OR_PRIVATE_IPV4__"
# -----------------------
k8sVersion="v1.8.1"
etcdVersion="v3.2.9"
dockerVersion="17.05.0-ce"
cniVersion="v0.6.0"
calicoCNIVersion="v1.11.0"
calicoctlVersion="v1.6.1"
cfsslVersion="v1.2.0"
helmVersion="v2.6.2"
./install_k8s.sh --master
$- kubectl get cs
NAME STATUS MESSAGE ERROR
controller-manager Healthy ok
scheduler Healthy ok
etcd-0 Healthy {"health": "true"}
$- kubectl get pod --all-namespaces
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-system calico-policy-controller-4180354049-63p5v 1/1 Running 0 4m
kube-system kube-dns-1822236363-zzkdq 4/4 Running 0 4m
kube-system kubernetes-dashboard-3313488171-lff6h 1/1 Running 0 4m
kube-system tiller-deploy-1884622320-0glqq 1/1 Running 0 4m
$- calicoctl get ippool
CIDR
192.168.0.0/16
fd80:24e2:f998:72d6::/64
$- kubectl run -i -t alpine --image=alpine --restart=Never
/ # ping6 google.com
PING google.com (2404:6800:4003:80d::200e): 56 data bytes
64 bytes from 2404:6800:4003:80d::200e: seq=0 ttl=57 time=2.129 ms
- KubeDNS
- HELM ready
- KubeDashboard
- RBAC only by default
- Calico CNI plugin
- Calico Policy controller
- Calicoctl tool
- UFW to secure access (can be disabled)
- ECDSA cluster certs w/ CFSSL
- IPv4/IPv6
You can expose easily your services with :
- Only reachable on the machine :
ClusterIP
- Expose on high TCP ports :
NodePort
- Expose publicly : Service's
ExternalIPs
You can easily add new nodes to your cluster by launching ./install_new_worker.sh
Before launch the script, be sure to tweak the head of the script :
nodeIP="__PUBLIC_OR_PRIVATE_IPV4__"
sshUser="root"
setupFirewall="True"
CAcountry="US"
This script download each k8s components with wget
and launch k8s with systemd units
.
You will need socat
, conntrack
, sudo
and git
on your servers.
To add a node, you will need to setup key-based
SSH authentification between master & workers.
If you want IPv6 on pods side, you need working IPv6 on hosts.
Simplekube is tested on Debian 8/9
and Ubuntu 16.x/17.x
.
Feel free to open an Issue if you need assistance !