一、安裝docker(目前登入的是root使用者)
1、下載 https://download.docker.com/linux/centos/7/x86_64/stable/Packages/
本次使用 20.10.9版本
2、解壓
tar xfz docker-20.10.9.tgz
3、複製到 /usr/bin
cp -rf docker/* /usr/bin/
4、將docker註冊為系統服務
vi /usr/lib/systemd/system/docker.service
寫入內容
點選檢視內容
[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network-online.target firewalld.service
Wants=network-online.target
[Service]
Type=notify
# the default is not to use systemd for cgroups because the delegate issues still
# exists and systemd currently does not support the cgroup feature set required
# for containers run by do cker
ExecStart=/usr/bin/dockerd
ExecReload=/bin/kill -s HUP $MAINPID
# Having non-zero Limit*s causes performance problems due to accounting overhead
# in the kernel. We recommend using cgroups to do container-local accounting.
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
# Uncomment TasksMax if your systemd version supports it.
# Only systemd 226 and above support this version.
#TasksMax=infinity
TimeoutStartSec=0
# set delegate yes so that systemd does not reset the cgroups of docker containers
Delegate=yes
# kill only the docker process, not all processes in the cgroup
KillMode=process
# restart the docker process if it exits prematurely
Restart=onfailure
StartLimitBurst=3
StartLimitInterval=60s
[Install]
WantedBy=multi-user.target
儲存
5、新增檔案許可權
chmod u+x /usr/lib/systemd/system/docker.service
6、過載unit配置檔案
systemctl daemon-reload
7、啟動docker
systemctl enable docker
8、檢視docker狀態
systemctl status docker
二、安裝kubectl v1.30.0
1、新建使用者
useradd kube
2、給予許可權
vi /etc/sudoers
在這兩行下面
## Allow root to run any commands anywhere
root ALL=(ALL) ALL
新增內容
kube ALL=(ALL) NOPASSWD:ALL
儲存,這裡需要強制儲存 wq!
3、切換使用者
su kube
接下來所有操作都是kube使用者
4、新建組docker,kube使用者加入docker組
sudo groupadd docker
sudo usermod -aG docker $USER && newgrp docker
5、下載
curl -LO https://dl.k8s.io/release/v1.30.0/bin/linux/amd64/kubectl
6、安裝 kubectl
sudo install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl
7、測試是否安裝成功
kubectl version --client
三、安裝minikube
1、下載(如果不能下載去阿里雲下載)
curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64
2、安裝
sudo install minikube-linux-amd64 /usr/local/bin/minikube && rm minikube-linux-amd64
3、測試是否安裝成功
minikube version
4、啟動
minikube start
啟動過程大致如下,會自動拉取映象
**在centos7下會有pod啟動不起來的情況**
issues
按照官方說法是kubectl的版本和centos7的相容性問題,預設安裝的minikube版本為 1.33.0,kubectl的版本為1.30.0
降低kubectl的版本即可，使用如下命令啟動
minikube start --container-runtime=docker --kubernetes-version=1.28.3 -p k8s-1.28.3