skiplee85 / k8s

Kubernetes setting shell

Require

• cfssl
• kubernetes
• etcd
• flannel
• supervisor (optional)

Setting

Step 1

Update config.env setting.

• KUBE_PATH
• HA_PROXY_IP
• MASTERS
• NODES
• BOOTSTRAP_TOKEN
• P12_PASSWORD

You can copy from config.env.example.

cp config.env.example config.env
# BOOTSTRAP_TOKEN
head -c 16 /dev/urandom | od -An -t x | tr -d ' '

Step 2

Download require software and link to bin path.

Master

• etcd
• flannel
• kube-apiserver
• kube-controller-manager
• kube-scheduler

Node

• flannel
• docker
• kubelet
• kube-proxy

# master
ln -s /opt/etcd-v3.2.2-linux-amd64/etcd /usr/local/bin/
ln -s /opt/etcd-v3.2.2-linux-amd64/etcdctl /usr/local/bin/
ln -s /opt/flanneld /usr/local/bin/
ln -s /opt/kubernetes/server/bin/kube-apiserver /usr/local/bin/
ln -s /opt/kubernetes/server/bin/kube-controller-manager /usr/local/bin/
ln -s /opt/kubernetes/server/bin/kube-scheduler /usr/local/bin/
ln -s /opt/kubernetes/server/bin/kubectl /usr/local/bin/

# node
ln -s /opt/flanneld /usr/local/bin/
ln -s /opt/kubernetes/server/bin/kubelet /usr/local/bin/
ln -s /opt/kubernetes/server/bin/kube-proxy /usr/local/bin/
ln -s /opt/kubernetes/server/bin/kubectl /usr/local/bin/

Step 3

Publish setting. (The masters & nodes need to set SSH first.)

./publish.sh -b -a

Step 4

Master start

# etcd
/etc/kubernetes/etcd/start.sh

# flannel
/etc/kubernetes/flannel/start.sh

# apiserver
/etc/kubernetes/etcd/kube-apiserver.sh

# controller-manager
/etc/kubernetes/etcd/kube-controller-manager.sh

# scheduler
/etc/kubernetes/etcd/kube-scheduler.sh

# init-setting. Just only exec once.
/etc/kubernetes/etcd/init-master.sh

Node start

# flannel
/etc/kubernetes/flannel/start.sh

# kubelet
/etc/kubernetes/etcd/kubelet.sh

# proxy
/etc/kubernetes/etcd/kube-proxy.sh

# init-setting. Just only exec once.
/etc/kubernetes/init-node.sh

# Approve this node. Just only exec once.
kubectl get csr
# NAME                                                   AGE       REQUESTOR           CONDITION
# node-csr-5WW3f84N09lX2pkWmfvT833gAXW_RZTf-G6N0L-P5Ms   10s       kubelet-bootstrap   Pending
kubectl certificate approve node-csr-xxxxx

Use supervisor

cp /etc/kubernetes/supervisord.d/* /etc/supervisor/conf.d/
supervisorctl update

# master
supervisorctl start kube_server:*
supervisorctl start flannel
# init-setting. Just only exec once.
/etc/kubernetes/init-master.sh

# node
supervisorctl start kube_node:*
supervisorctl start flannel
# init-setting. Just only exec once.
/etc/kubernetes/init-node.sh
# Approve this node. Just only exec once.
kubectl get csr
# NAME                                                   AGE       REQUESTOR           CONDITION
# node-csr-5WW3f84N09lX2pkWmfvT833gAXW_RZTf-G6N0L-P5Ms   10s       kubelet-bootstrap   Pending
kubectl certificate approve node-csr-xxxxx