Shulou(Shulou.com)06/02 Report--

Building full record of Kubernetes v1.11.2 based on Kubeadm

Required mirror image

K8s.gcr.io/pause:3.1

K8s.gcr.io/coredns

Quay.io/coreos/flannel:v0.10.0-amd64

K8s.gcr.io/etcd-amd64:3.2.18

K8s.gcr.io/kube-proxy-amd64:v1.11.2

K8s.gcr.io/kube-apiserver-amd64:v1.11.2

K8s.gcr.io/kube-controller-manager-amd64:v1.11.2

K8s.gcr.io/kube-scheduler-amd64:v1.11.2

Monitor and control

Gcr.io/google_containers/heapster-grafana-amd64:v4.4.3

Gcr.io/google_containers/heapster-influxdb-amd64:v1.3.3

Gcr.io/google_containers/heapster-amd64:v1.5.3

Quay.io/calico/cni:v2.0.5

Quay.io/calico/kube-controllers:v2.0.4

The main purpose of this paper is to record the steps of individuals in the configuration of K8S cluster, as well as the problems encountered and the corresponding solutions, from cluster building to Kubernetes-Dashboard installation, role permissions configuration.

First, let's briefly introduce the environment. The situation of the four nodes is as follows:

Node name IP OS installation software

Master 10.211.55.6 Centos7 kubeadm,kubelet,kubectl,docker

Node1 10.211.55.7 Centos7 kubeadm,kubelet,kubectl,docker

Node2 10.211.55.8 Centos7 kubeadm,kubelet,kubectl,docker

Node3 10.211.55.9 Centos7 kubeadm,kubelet,kubectl,docker

The version of kubeadm,kubectl,kubelet is v1.10.0 and the version of Docker is 1.13.1.

one。 The preparatory work of each node:

1. Turn off and deactivate the firewall

Systemctl stop firewalld.service

Systemctl disable firewalld.service

two。 Permanently close SELinux

Vim / etc/selinux/config

SELINUX=disabled

3. Synchronize cluster system time

Yum-y install ntp

Ntpdate 0.asia.pool.ntp.org

4 optimization

Set up ipv4 forwarding:

Vim / etc/sysctl.d/k8s.conf: add a line net.ipv4.ip_forward = 1

Sysctl-p / etc/sysctl.d/k8s.conf

Net-bridge settings under centos7:

Echo 1 > / proc/sys/net/bridge/bridge-nf-call-iptables

Echo 1 > / proc/sys/net/bridge/bridge-nf-call-ip6tables

5. Restart the machine

Reboot

two。 Software installation and configuration:

Note ⚠️: software sources are configured on demand. Three sources are given below, of which the kubernetes yum source must be configured, and the docker source needs to be installed if you need to install the docker-ce version, otherwise a maximum of 1.13.1 version is supported.

# Ali Cloud yum source: wget-O / etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo yum clean all yum makecache

# docker yum Source cat > > / etc/yum.repos.d/docker.repo / etc/yum.repos.d/kubernetes.repo

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