kubeadm安装k8s 1.9
安装条件：2台虚机，centos 7.2，一台作为控制节点，一台为计算节点，能访问外网。1. 准备工作，所有节点都执行（1）关闭selinux# vim /etc/sysconfig/selinux# service firewalld stop# systemctl disable firewalld# reboot（2）配置yum源# vim /etc/yum.repos.d/kubernet
2台虚机，centos 7.2，一台作为控制节点，一台为计算节点，能访问外网。
1. 准备工作，所有节点都执行
（1）关闭selinux# vim /etc/sysconfig/selinux
# service firewalld stop
# systemctl disable firewalld
# reboot
（2）配置yum源
# vim /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=0
（3）安装docker
# yum install docker
# systemctl enable docker && systemctl start docker
# cat <<EOF > /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF
# sysctl --system
# CNI_VERSION="v0.6.0"
# mkdir -p /opt/cni/bin
# curl -L "https://github.com/containernetworking/plugins/releases/download/${CNI_VERSION}/cni-plugins-amd64-${CNI_VERSION}.tgz" | tar -C /opt/cni/bin -xz
# RELEASE="$(curl -sSL https://dl.k8s.io/release/stable.txt)"
# echo $RELEASE
v1.9.3
# mkdir -p /opt/bin
# cd /opt/bin
# curl -L --remote-name-all https://storage.googleapis.com/kubernetes-release/release/${RELEASE}/bin/linux/amd64/{kubeadm,kubelet,kubectl}
# chmod +x {kubeadm,kubelet,kubectl}
# curl -sSL "https://raw.githubusercontent.com/kubernetes/kubernetes/${RELEASE}/build/debs/kubelet.service" | sed "s:/usr/bin:/opt/bin:g" > /etc/systemd/system/kubelet.service
# mkdir -p /etc/systemd/system/kubelet.service.d
# curl -sSL "https://raw.githubusercontent.com/kubernetes/kubernetes/${RELEASE}/build/debs/10-kubeadm.conf" | sed "s:/usr/bin:/opt/bin:g" > /etc/systemd/system/kubelet.service.d/10-kubeadm.conf
# systemctl enable kubelet && systemctl start kubelet
# docker info | grep -i cgroup
Cgroup Driver: systemd
# vim /etc/systemd/system/kubelet.service.d/10-kubeadm.conf
Environment="KUBELET_CGROUP_ARGS=--cgroup-driver=systemd"
# systemctl daemon-reload# systemctl restart kubelet
# vim kubeadm.config
apiVersion: kubeadm.k8s.io/v1alpha1
api:
advertiseAddress: "10.132.46.119"
controllerManagerExtraArgs:
horizontal-pod-autoscaler-use-rest-clients: "true"
horizontal-pod-autoscaler-sync-period: "10s"
node-monitor-grace-period: "10s"
apiServerExtraArgs:
runtime-config: "api/all=true"
feature-gates: "TaintBasedEvictions=true"
kubernetesVersion: "v1.9.3"
imageRepository: "registry.cn-hangzhou.aliyuncs.com/zhangoic"
network:
serviceSubnet: 10.96.0.0/12
podSubnet: 192.168.0.0/16
编辑10-kubeadm.conf文件
# cat /etc/systemd/system/kubelet.service.d/10-kubeadm.conf
[Service]
Environment="KUBELET_KUBECONFIG_ARGS=--bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --kubeconfig=/etc/kubernetes/kubelet.conf"
Environment="KUBELET_SYSTEM_PODS_ARGS=--pod-manifest-path=/etc/kubernetes/manifests --allow-privileged=true"
Environment="KUBELET_NETWORK_ARGS=--network-plugin=cni --cni-conf-dir=/etc/cni/net.d --cni-bin-dir=/opt/cni/bin"
Environment="KUBELET_DNS_ARGS=--cluster-dns=10.96.0.10 --cluster-domain=cluster.local"
Environment="KUBELET_AUTHZ_ARGS=--authorization-mode=Webhook --client-ca-file=/etc/kubernetes/pki/ca.crt"
# Value should match Docker daemon settings.
# Defaults are "cgroupfs" for Debian/Ubuntu/OpenSUSE and "systemd" for Fedora/CentOS/RHEL
Environment="KUBELET_CGROUP_ARGS=--cgroup-driver=systemd"
Environment="KUBELET_CADVISOR_ARGS=--cadvisor-port=0"
Environment="KUBELET_CERTIFICATE_ARGS=--rotate-certificates=true"
Environment="KUBELET_EXTRA_ARGS=--fail-swap-on=false --pod-infra-container-image=registry.cn-hangzhou.aliyuncs.com/zhangoic/pause-amd64:3.0"
ExecStart=
ExecStart=/opt/bin/kubelet $KUBELET_KUBECONFIG_ARGS $KUBELET_SYSTEM_PODS_ARGS $KUBELET_NETWORK_ARGS $KUBELET_DNS_ARGS $KUBELET_AUTHZ_ARGS $KUBELET_CGROUP_ARGS $KUBELET_CADVISOR_ARGS $KUBELET_CERTIFICATE_ARGS $KUBELET_EXTRA_ARGS
最后会返回如下信息，其中kubeadm join是增加计算节点时，在计算节点上执行的命令。
根据返回的提示，继续执行命令：
3. 部署计算节点
（1）将master的配置文件拷贝到slave节点
4. 安装cni组件
k8s提供了多种网络插件，这里使用calico
在控制节点执行命令：
完成以上步骤后，一个k8s集群就安装完毕了，可以用kubectl get nodes和kubectl get pods -n kube-system去查看节点和pod的状态了。
#kubectl apply -f \
https://docs.projectcalico.org/v3.0/getting-started/kubernetes/installation/hosted/kubeadm/1.7/calico.yaml
K8S/Kubernetes社区为您提供最前沿的新闻资讯和知识内容
更多推荐
0
0- 0
已为社区贡献2条内容
所有评论(0)