這里安裝v1.14.1版本的kubernetes, cni選擇flannel.
安裝系統依賴
yum install conntrack-tools socat ebtables系統環境配置
groupadd docker
useradd -g docker docker可能的配置/etc/default/grub -> GRUB_CMDLINE_LINUX_DEFAULT
cgroup_enable=memory swapaccount=1取消swap
編輯/etc/fstab, 將含有swap字段的那行注釋掉
最后重啟
下載相關文件
下載kubeadm,kubectl, kubelet, kubernetes-cni, docker-ce, kube-flannel.yml
curl -LO https://storage.googleapis.com/kubernetes-release/release/v1.14.1/bin/linux/amd64/kubeadm
curl -LO https://storage.googleapis.com/kubernetes-release/release/v1.14.1/bin/linux/amd64/kubelet
curl -LO https://storage.googleapis.com/kubernetes-release/release/v1.14.1/bin/linux/amd64/kubectl
curl -LO https://download.docker.com/linux/static/stable/x86_64/docker-18.06.3-ce.tgz
curl -LO https://github.com/containernetworking/plugins/releases/download/v0.8.2/cni-plugins-linux-amd64-v0.8.2.tgz
curl -LO https://raw.githubusercontent.com/coreos/flannel/62e44c867a2846fefb68bd5f178daf4da3095ccb/Documentation/kube-flannel.yml安裝
kubernetes相關命令
chmod x kube*
mv kube* /usr/local/bin/
mkdir -p /opt/cni/bin
tar xf cni-plugins-linux-amd64-v0.8.2.tgz -C /opt/cni/bin配置kubelet服務
cat > /usr/lib/systemd/system/kubelet.service << EOF
[Unit]
Description=kubelet: The Kubernetes Node Agent
Documentation=https://kubernetes.io/docs/
[Service]
ExecStart=/usr/local/bin/kubelet
Restart=always
StartLimitInterval=0
RestartSec=10
[Install]
WantedBy=multi-user.target
EOF配置kubeadm環境變量
cat > /etc/systemd/system/kubelet.service.d/10-kubeadm.conf << EOF
# Note: This dropin only works with kubeadm and kubelet v1.11
[Service]
Environment=KUBELET_KUBECONFIG_ARGS=--bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --kubeconfig=/etc/kubernetes/kubelet.conf
Environment=KUBELET_CONFIG_ARGS=--config=/var/lib/kubelet/config.yaml
# This is a file that kubeadm init and kubeadm join generates at runtime, populating the KUBELET_KUBEADM_ARGS variable dynamically
EnvironmentFile=-/var/lib/kubelet/kubeadm-flags.env
# This is a file that the user can use for overrides of the kubelet args as a last resort. Preferably, the user should use
# the .NodeRegistration.KubeletExtraArgs object in the configuration files instead. KUBELET_EXTRA_ARGS should be sourced from this file.
EnvironmentFile=-/etc/sysconfig/kubelet
ExecStart=
ExecStart=/usr/local/bin/kubelet \\\\$KUBELET_KUBECONFIG_ARGS \\\\$KUBELET_CONFIG_ARGS \\\\$KUBELET_KUBEADM_ARGS \\\\$KUBELET_EXTRA_ARGS
EOF讓kublet服務隨系統啟動
systemctl enable kubelet安裝docker
tar xf docker-17.09.1-ce.tgz
mv docker/* /usr/local/bin/配置docker服務
cat > /usr/lib/systemd/system/docker.service
[Unit]
Description=docker: docker
[Service]
ExecStart=/usr/local/bin/dockerd
Restart=always
StartLimitInterval=0
RestartSec=10
[Install]
WantedBy=multi-user.target啟動docker服務并隨系統啟動
systemctl enable docker
systemctl start docker通過docker pull 命令下載以下docker鏡像:
k8s.gcr.io/kube-apiserver:v1.14.1
k8s.gcr.io/kube-controller-manager:v1.14.1
k8s.gcr.io/kube-scheduler:v1.14.1
k8s.gcr.io/kube-proxy:v1.14.1
k8s.gcr.io/pause:3.1
k8s.gcr.io/etcd:3.3.10
k8s.gcr.io/coredns:1.3.1
https://raw.githubusercontent.com/coreos/flannel/62e44c867a2846fefb68bd5f178daf4da3095ccb/Documentation/kube-flannel.yml
quay.io/coreos/flannel:v0.11.0-amd64這些相關鏡像版本可以通過以下命令列出,
kubeadm config images list
k8s集群初始化
kubeadm init -v=8 --alsologtostderr配置自己的admin.conf
mkdir -p $HOME/.kube
cp -i /etc/kubernetes/admin.comf $HOME/.kube讓自身可調度
kubectl taint node hostname node-role.kubernetes.io/master=-
配置pod cidr網絡
編輯/etc/kubernetes/manifests/kube-controller-manager.yaml文件, 在command那項加入
--allocate-node-cidrs=true
--cluster-cidr=10.244.0.0/16重啟kubelet
systemctl restart kubelet安裝cni
kubectl apply -f kube-flannel.yml至此就完成了
最后的說明
純粹記錄，如果按照文檔裝不上或者某些命令式很正常的。
更多關于云服務器，域名注冊，虛擬主機的問題，請訪問三五互聯官網：m.shinetop.cn