kubernetes初始化

master

修改/etc/hosts文件

10.192.45.105 master
10.192.45.195 node1
10.192.45.205 node2

dokube.sh

#！/bin/sh
yum list wget &&
yum -y install wget &&
cd /etc/yum.repos.d/ &&
wget https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo &&
cat >> /etc/yum.repos.d/kubernetes.repo <<EOF 
#!/bin/sh
#
[kubernetes]
name=kubernetes
baseurl=https://mirrors.huaweicloud.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
gpgkey=https://mirrors.huaweicloud.com/kubernetes/yum/doc/rpm-package-key.gpg
gpgcheck=1
enables=1
EOF
yum clean all &&
yum repolist &&
yum list docker-ce kubectl kubelet kubeadm &&
yum -y install docker-ce kubeadm kubectl kubelet

echo > /etc/hostname <<EOF
master
EOF

hostname master &&
systemctl enable docker kubelet &&
mkdir -p /etc/docker &&

cat > /etc/docker/daemon.json <<EOF
{
"registry-mirrors": ["https://qijo5n63.mirror.aliyuncs.com"],
 "exec-opts": ["native.cgroupdriver=systemd"]
}
EOF

systemctl daemon-reload &&
systemctl start docker &&

echo "1" > /proc/sys/net/bridge/bridge-nf-call-iptables

echo "1" > /proc/sys/net/bridge/bridge-nf-call-ip6tables 

systemctl disable firewalld &&
systemctl stop firewalld &&



swapoff -a &&

cat  > /etc/sysconfig/kubelet <<EOF
KUBELET_EXTRA_ARGS="--fail-swap-on=false"
EOF

systemctl enable docker kubelet &&

/bin/sh -x /root/kubeinit.sh

kubeinit.sh

#!/bin/sh
KUBE_VERSION=`kubelet --version | awk -F ' ' '{print $2}'`
list=$(kubeadm config images list --kubernetes-version=${KUBE_VERSION})
for line in ${list}
do
echo ${line}
# docker pull $line
image=`echo ${line} | awk '{ sub(/k8s.gcr.io/,"gcr.azk8s.cn/google_containers"); print $0 }'`
echo ${image}
docker pull ${image}
docker tag ${image} ${line}
docker rmi ${image}
done &&


kubeadm init --kubernetes-version=v1.14.2  --service-cidr=10.96.0.0/12 --ignore-preflight-errors=Swap &&

# --pod-network-cidr=10.244.0.0/16 絨布網絡使用

mkdir -p $HOME/.kube &&
cp -i /etc/kubernetes/admin.conf $HOME/.kube/config &&

# kubectl get
# get爲查詢

# kubectl get cs
# 健康檢查

# kubectl get nodes
# 獲取節點信息，狀態有Ready就緒，NotReady未就緒
# NotReady未就緒的緣由是，沒有網絡組建，flannel或Weave Net

# kubectl get ns
# 查詢名稱空間

#  kubectl get pods -n kube-system 或 
# kubectl get pods --all-namespaces
# 查看當前名稱空間中全部pods


kubectl apply -f "https://cloud.weave.works/k8s/net?k8s-version=$(kubectl version | base64 | tr -d '\n')"

# docker pull quay.azk8s.cn/coreos/flannel:v0.11.0-amd64 &&
# docker tag quay.azk8s.cn/coreos/flannel:v0.11.0-amd64 quay.io/coreos/flannel:v0.11.0-amd64 &&

# cd &&
# kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/v0.11.0/Documentation/kube-flannel.yml &&

node1

修改/etc/hosts文件

10.192.45.105 master
10.192.45.195 node1
10.192.45.205 node2

dokube.sh

#！/bin/sh
yum list wget &&
yum -y install wget &&
cd /etc/yum.repos.d/ &&
wget https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo &&
cat >> /etc/yum.repos.d/kubernetes.repo <<EOF 
#!/bin/sh
#
[kubernetes]
name=kubernetes
baseurl=https://mirrors.huaweicloud.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
gpgkey=https://mirrors.huaweicloud.com/kubernetes/yum/doc/rpm-package-key.gpg
gpgcheck=1
enables=1
EOF
yum clean all &&
yum repolist &&
yum list docker-ce kubectl kubelet kubeadm &&
yum -y install docker-ce kubeadm kubectl kubelet

echo > /etc/hostname <<EOF
node1
EOF

hostname node1 &&
systemctl enable docker kubelet &&
mkdir -p /etc/docker &&

cat > /etc/docker/daemon.json <<EOF
{
"registry-mirrors": ["https://qijo5n63.mirror.aliyuncs.com"],
 "exec-opts": ["native.cgroupdriver=systemd"]
}
EOF

systemctl daemon-reload &&
systemctl start docker &&

echo "1" > /proc/sys/net/bridge/bridge-nf-call-iptables

echo "1" > /proc/sys/net/bridge/bridge-nf-call-ip6tables 

systemctl disable firewalld &&
systemctl stop firewalld &&



swapoff -a &&

cat  > /etc/sysconfig/kubelet <<EOF
KUBELET_EXTRA_ARGS="--fail-swap-on=false"
EOF

systemctl enable docker kubelet &&

/bin/sh -x /root/kubemirror.sh

kubemirror.sh

#!/bin/sh
KUBE_VERSION=`kubelet --version | awk -F ' ' '{print $2}'`
list=$(kubeadm config images list --kubernetes-version=${KUBE_VERSION})
for line in ${list}
do
echo ${line}
# docker pull $line
image=`echo ${line} | awk '{ sub(/k8s.gcr.io/,"gcr.azk8s.cn/google_containers"); print $0 }'`
echo ${image}
docker pull ${image}
docker tag ${image} ${line}
docker rmi ${image}
done

node2

修改/etc/hosts文件

10.192.45.105 master
10.192.45.195 node1
10.192.45.205 node2

dokube.sh

#！/bin/sh
yum list wget &&
yum -y install wget &&
cd /etc/yum.repos.d/ &&
wget https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo &&
cat >> /etc/yum.repos.d/kubernetes.repo <<EOF 
#!/bin/sh
#
[kubernetes]
name=kubernetes
baseurl=https://mirrors.huaweicloud.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
gpgkey=https://mirrors.huaweicloud.com/kubernetes/yum/doc/rpm-package-key.gpg
gpgcheck=1
enables=1
EOF
yum clean all &&
yum repolist &&
yum list docker-ce kubectl kubelet kubeadm &&
yum -y install docker-ce kubeadm kubectl kubelet

echo > /etc/hostname <<EOF
node2
EOF

hostname node2 &&
systemctl enable docker kubelet &&
mkdir -p /etc/docker &&

cat > /etc/docker/daemon.json <<EOF
{
"registry-mirrors": ["https://qijo5n63.mirror.aliyuncs.com"],
 "exec-opts": ["native.cgroupdriver=systemd"]
}
EOF

systemctl daemon-reload &&
systemctl start docker &&

echo "1" > /proc/sys/net/bridge/bridge-nf-call-iptables

echo "1" > /proc/sys/net/bridge/bridge-nf-call-ip6tables 

systemctl disable firewalld &&
systemctl stop firewalld &&



swapoff -a &&

cat  > /etc/sysconfig/kubelet <<EOF
KUBELET_EXTRA_ARGS="--fail-swap-on=false"
EOF

systemctl enable docker kubelet &&

/bin/sh -x /root/kubemirror.sh

kubemirror.sh

#!/bin/sh
KUBE_VERSION=`kubelet --version | awk -F ' ' '{print $2}'`
list=$(kubeadm config images list --kubernetes-version=${KUBE_VERSION})
for line in ${list}
do
echo ${line}
# docker pull $line
image=`echo ${line} | awk '{ sub(/k8s.gcr.io/,"gcr.azk8s.cn/google_containers"); print $0 }'`
echo ${image}
docker pull ${image}
docker tag ${image} ${line}
docker rmi ${image}
done

IP=ip addr show enp0s3 | grep inet | grep -v inet6 | awk '{print $2}' | awk -F '/' '{print $1}'