kubernetes的搭建以及dashboard页面的启动

###查看kubernetes状态

```

kubectl get pods -A #查看相关状态

kubectl get cs #查看k8s的ready状态

kubectl get node #查看k8s节点状态

kubectl -n kube-system get service kubernetes-dashboard #获取端口信息

```

###运维事项

```

kubectl get pods --all-namespaces 获取状态

journalctl -f -u kubelet.service 查看 kubernetes 日志

kubectl apply -f 部署某个组件

kubectl delete 删除某个组件

kubectl get node 获取所有节点状态

kubectl describe pod kubernetes-dashboard-7d75c474bb-zvc85 -n kube-system

查看 pod 的状态的原因

kubectl logs -f kubernetes-dashboard-7d75c474bb-zvc85 -n kube-system 查看容

器日志

```

###初始化

```

kubeadm init --kubernetes-version=v1.15.0 --pod-network-cidr=172.16.0.0/16 --apiserver-advertise-address=192.168.1.239

#添加k8s节点

kubeadm join 192.168.1.239:6443 --token mcpg7g.hosgnl6ljwconxxe \

--discovery-token-ca-cert-hash sha256:864cf0a1b8ee307a557f780ef30856278898dbe36259575699134d5389d9e935

#安装

yum install -y yum-utils device-mapper-persistent-data lvm2

yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

#获取pods状态

kubectl get pods coredns-5c98db65d4-6hbhd -n kube-system -o yaml

kubectl get pods coredns-5c98db65d4-6hbhd --namespace=kube-system -o yaml | grep resources

###初始化获取pods状态查看日志按照yaml删除k8s节点

sudo kubeadm init --kubernetes-version=v1.15.0 --apiserver-advertise-address=192.168.1.239 --pod-network-cidr=192.168.0.0/16

kubectl get pods --all-namespaces

kubectl get node

journalctl -f -u kubelet.service 日志

kubectl delete rbac-kdd.yaml

kubectl delete calico.yaml

kubectl delete pod calico-node-zplqs -n kube-system

kubectl describe pod kubernetes-dashboard-7d75c474bb-zvc85 -n kube-system

kubectl logs -f kube-apiserver-server -n kube-system

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

kubectl delete -f calico.yaml

kubectl apply -f https://docs.projectcalico.org/v3.1/getting-started/kubernetes/installation/hosted/rbac-kdd.yaml

kubectl apply -f https://docs.projectcalico.org/v3.1/getting-started/kubernetes/installation/hosted/kubernetes-datastore/calico-networking/1.7/calico.yaml

```

###kubernetes的安装

```

1.机器安装准备

关闭selinux，防火墙、虚拟内存（所有节点执行）

关闭防火墙

systemctl stop firewalld.service

systemctl disable firewalld.service

关闭selinux

setenforce 0

sed -i 's/^SELINUX=enforcing$/SELINUX=permissive/' /etc/selinux/config

编辑文件

swapoff -a

编辑 /etc/fstab

设置ip6

cat <<EOF > /etc/sysctl.d/k8s.conf

net.bridge.bridge-nf-call-ip6tables = 1

net.bridge.bridge-nf-call-iptables = 1

EOF

安装docker

yum install -y yum-utils device-mapper-persistent-data lvm2

yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

yum update

yum install docker -y

systemctl start docker

systemctl enable docker

vi /etc/docker/daemon.json

{

"registry-mirrors": [

"https://dockerhub.azk8s.cn",

"https://reg-mirror.qiniu.com"

]

}

sudo systemctl daemon-reload

sudo systemctl restart docker

docker info 验证

k8s 安装

cat <<EOF > /etc/yum.repos.d/kubernetes.repo

[kubernetes]

name=Kubernetes

baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64

enabled=1

gpgcheck=1

repo_gpgcheck=1

gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg

exclude=kube*

EOF

cat <<EOF > /etc/sysctl.d/k8s.conf

net.bridge.bridge-nf-call-ip6tables = 1

net.bridge.bridge-nf-call-iptables = 1

EOF

yum install -y kubelet kubeadm kubectl --disableexcludes=kubernetes

systemctl enable kubelet && systemctl start kubelet

cat <<EOF > /etc/sysctl.d/k8s.conf

net.bridge.bridge-nf-call-ip6tables = 1

net.bridge.bridge-nf-call-iptables = 1

EOF

sysctl --system

kubeadm config images list

k8s 加速器

#!/bin/bash

images=(

kube-apiserver:v1.15.0

kube-controller-manager:v1.15.0

kube-scheduler:v1.15.0

kube-proxy:v1.15.0

pause:3.1

etcd:3.3.10

coredns:1.3.1

)

for imageName in ${images[@]} ; do

docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/$imageName

docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/$imageName k8s.gcr.io/$imageName

done

kubeadm init --kubernetes-version v1.15.0 --pod-network-cidr=10.244.0.0/16

mkdir -p $HOME/.kube

sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config

sudo chown $(id -u):$(id -g) $HOME/.kube/config

允许master 节点运行node

kubectl taint nodes --all node-role.kubernetes.io/master-node/kube untainted

kubeadm join 192.168.1.116:6443 --token plrite.69a1a1jwrb7bjonb --discovery-token-ca-cert-hash sha256:91af313ecdf8f14832e0cc199bc4576af58b6c6f609270904d10c377326db1a3 --ignore-preflight-errors=Swap

docker pull quay.io/coreos/flannel:v0.11.0-amd64

kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml

openssl x509 -pubkey -in /etc/kubernetes/pki/ca.crt | openssl rsa -pubin -outform der 2>/dev/null | openssl dgst -sha256 -hex | sed 's/^.* //'

kubectl create clusterrolebinding tiller-cluster-rule --clusterrole=cluster-admin --serviceaccount=kube-system:tiller

kubectl patch deploy --namespace kube-system tiller-deploy -p '{"spec":{"template":{"spec":{"serviceAccount":"tiller"}}}}'

kubectl -n kube-system describe secret $(kubectl -n kube-system get secret | grep admin-user | awk '{print $1}') 生成令牌

```

巴特西

kubernetes的搭建以及dashboard页面的启动

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