转载：kubeasz 制作k8s 集群离线安装包

kubeasz 制作k8s 集群离线安装包

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本文介绍了，利用 ezdown 制作 kubeasz 离线部署 k8s 集群所需的离线安装包。

使用 kubeasz 离线安装 k8s 集群需要下载四个部分：

• kubeasz 项目代码

• 二进制文件（k8s、etcd、containerd 等组件）

• 容器镜像文件（calico、coredns、metrics-server 等容器镜像）

• 系统软件安装包（ipset、libseccomp2 等，仅无法使用本地 yum/apt 源时需要）

1. 离线文件准备

1.1 下载工具脚本 ezdown

本文使用 kubeasz 版本 3.6.1

在一台能够访问互联网的服务器上执行下面的命令（这不是废话么）

export release=3.6.1
wget https://github.com/easzlab/kubeasz/releases/download/${release}/ezdown
chmod +x ./ezdown
export release=3.6.1
wget https://github.com/easzlab/kubeasz/releases/download/${release}/ezdown
chmod +x ./ezdown

脚本在 GitHub上 可能需要多次尝试

看看 ezdown 都有哪些命令参数

注意：以下输出受限于规则而造成了缺失，请以实际结果为准。

[root@localhost ~]# ./ezdown
Usage: ezdown [options] [args]
  option:
    -C         stop&clean all local containers
    -D         download default binaries/images into "/etc/kubeasz"
    -P <OS>    download system packages of the OS (ubuntu_22,debian_11,...)
    -R         download Registry(harbor) offline installer
    -S         start kubeasz in a container
    -X <opt>   download extra images
    -d <ver>   set docker-ce version, default "20.10.24"
    -e <ver>   set kubeasz-ext-bin version, default "1.7.1"
    -k <ver>   set kubeasz-k8s-bin version, default "v1.27.2"
    -z <ver>   set kubeasz version, default "3.6.1"

1.2 使用工具脚本下载离线文件

• 下载 kubeasz 代码、二进制、默认容器镜像

# 国内环境
./ezdown -D

• 下载额外插件

./ezdown -X prometheus
./ezdown -X nfs-provisioner

其他可用的插件，没有找到文档介绍，可以查看源代码 https://github.com/easzlab/kubeasz/blob/master/ezdown

function usage-down-ext-img(){
  echo -e "\033[33mUsage:\033[0m ezdown -X <opt>"
  cat <<EOF
available options:
    cilium                   to download images of cilium
    flannel                  to download images of flannel
    kube-ovn                 to download images of kube-ovn
    kube-router              to download images of kube-router
    kubeapps                 to download images of kubeapps
    local-path-provisioner   to download images of local-path-provisioner
    network-check            to download images of network-check
    nfs-provisioner          to download images of nfs-provisioner
    prometheus               to download images of prometheus 
examples:
    ./ezdown -X prometheus
EOF
}

• 下载离线操作系统包

# 文本选用centos7
./ezdown -P centos_7

具体支持的操作系统类型和对应参数，需要查看源码 https://github.com/easzlab/kubeasz/blob/master/ezdown

function usage-down-sys-pkg(){
  echo -e "\033[33mUsage:\033[0m ezdown -P <OS>"
  cat <<EOF
available OSes:
    almalinux_8       to download package of AlmaLinux 8
    almalinux_9       to download package of AlmaLinux 9
    centos_7          to download package of CentOS 7
    debian_10         to download package of Debian 10
    debian_11         to download package of Debian 11
    fedora_34         to download package of Fedora 34
    fedora_35         to download package of Fedora 35
    fedora_36         to download package of Fedora 36
    fedora_37         to download package of Fedora 37
    opensuse_leap_15  to download package of openSUSE Leap 15
    rocky_8           to download package of Rocky Linux 8
    rocky_9           to download package of Rocky Linux 9
    ubuntu_16         to download package of Ubuntu 16.04
    ubuntu_18         to download package of Ubuntu 18.04
    ubuntu_20         to download package of Ubuntu 20.04
    ubuntu_22         to download package of Ubuntu 22.04
examples:
    ./ezdown -P ubuntu_22
EOF
}

上述脚本运行成功后，所有文件（kubeasz代码、二进制、离线镜像）均已整理好放入目录/etc/kubeasz

• /etc/kubeasz 包含 kubeasz 版本为 ${release} 的发布代码

• /etc/kubeasz/bin 包含 k8s/etcd/docker/cni 等二进制文件

• /etc/kubeasz/down 包含集群安装时需要的离线容器镜像

• /etc/kubeasz/down/packages 包含集群安装时需要的系统基础软件

[root@localhost ~]# ll -h /etc/kubeasz/
total 104K
-rw-rw-r--.  1 root root  20K May 28 00:32 ansible.cfg
drwxr-xr-x.  4 root root 4.0K Jul 11 02:51 bin
drwxrwxr-x.  8 root root   94 May 28 00:38 docs
drwxr-xr-x.  4 root root 4.0K Jul 11 03:28 down
drwxrwxr-x.  2 root root   70 May 28 00:38 example
-rwxrwxr-x.  1 root root  26K May 28 00:32 ezctl
-rwxrwxr-x.  1 root root  32K May 28 00:32 ezdown
drwxrwxr-x. 10 root root  145 May 28 00:38 manifests
drwxrwxr-x.  2 root root   94 May 28 00:38 pics
drwxrwxr-x.  2 root root 4.0K May 28 00:38 playbooks
-rw-rw-r--.  1 root root 5.9K May 28 00:32 README.md
drwxrwxr-x. 22 root root 4.0K May 28 00:38 roles
drwxrwxr-x.  2 root root   74 May 28 00:38 tools
[root@localhost ~]# ll -h /etc/kubeasz/bin/
total 1.1G
-rwxr-xr-x. 1 root root  57M Nov  7  2022 calicoctl
-rwxr-xr-x. 1 root root  14M Apr  1 19:05 cfssl
-rwxr-xr-x. 1 root root  12M Apr  1 19:05 cfssl-certinfo
-rwxr-xr-x. 1 root root 7.5M Apr  1 19:05 cfssljson
-rwxr-xr-x. 1 root root 1.1M Jan 10 04:48 chronyd
-rwxr-xr-x. 1 root root  72M Mar 21 03:30 cilium
drwxr-xr-x. 2 root root  248 Apr  1 19:05 cni-bin
-rwxr-xr-x. 1 root root  38M Jul 11 02:40 containerd
drwxr-xr-x. 2 root root  157 Apr  1 19:05 containerd-bin
-rwxr-xr-x. 1 root root 7.2M Jul 11 02:40 containerd-shim
-rwxr-xr-x. 1 root root 9.4M Jul 11 02:40 containerd-shim-runc-v2
-rwxr-xr-x. 1 root root  52M Mar 15 09:57 crictl
-rwxr-xr-x. 1 root root  21M Jul 11 02:40 ctr
-rwxr-xr-x. 1 root root  46M Jul 11 02:40 docker
-rwxr-xr-x. 1 root root  52M Mar 26 10:37 docker-compose
-rwxr-xr-x. 1 root root  56M Jul 11 02:40 dockerd
-rwxr-xr-x. 1 root root 748K Jul 11 02:40 docker-init
-rwxr-xr-x. 1 root root 2.6M Jul 11 02:40 docker-proxy
-rwxr-xr-x. 1 root root  23M Nov 21  2022 etcd
-rwxr-xr-x. 1 root root  18M Nov 21  2022 etcdctl
-rwxr-xr-x. 1 root root  45M Mar  8 16:17 helm
-rwxr-xr-x. 1 root root  21M Mar 15 08:03 hubble
-rwxr-xr-x. 1 root root 1.8M Jan 10 04:49 keepalived
-rwxr-xr-x. 1 root root 112M May 17 10:33 kube-apiserver
-rwxr-xr-x. 1 root root 104M May 17 10:33 kube-controller-manager
-rwxr-xr-x. 1 root root  47M May 17 10:33 kubectl
-rwxr-xr-x. 1 root root 102M May 17 10:33 kubelet
-rwxr-xr-x. 1 root root  51M May 17 10:33 kube-proxy
-rwxr-xr-x. 1 root root  52M May 17 10:33 kube-scheduler
-rwxr-xr-x. 1 root root 1.8M Jan 10 04:48 nginx
-rwxr-xr-x. 1 root root  14M Jul 11 02:40 runc
[root@localhost ~]# ll -h /etc/kubeasz/down/
total 2.1G
-rw-------. 1 root root 514M Jul 11 02:56 calico_v3.24.6.tar
-rw-------. 1 root root  47M Jul 11 02:57 coredns_1.9.3.tar
-rw-------. 1 root root 238M Jul 11 02:58 dashboard_v2.7.0.tar
drwxrwxr-x. 2 1000 1000    6 Jul 11 02:40 docker
-rw-r--r--. 1 root root  64M Apr  4 17:19 docker-20.10.24.tgz
-rw-------. 1 root root  67M Jul 11 02:57 k8s-dns-node-cache_1.22.20.tar
-rw-------. 1 root root 159M Jul 11 02:42 kubeasz_3.6.1.tar
-rw-------. 1 root root  42M Jul 11 02:59 metrics-scraper_v1.0.8.tar
-rw-------. 1 root root  68M Jul 11 02:59 metrics-server_v0.6.3.tar
-rw-------. 1 root root  43M Jul 11 03:22 nfs-provisioner_v4.0.2.tar
drwxr-xr-x. 2 root root   26 May  5 04:44 packages
-rw-------. 1 root root 738K Jul 11 02:59 pause_3.9.tar
-rw-------. 1 root root 855M Jul 11 03:21 prometheus-chart_45.23.0.tar
-rw-------. 1 root root  24M Jul 11 02:51 registry-2.tar
[root@localhost ~]# ll -h /etc/kubeasz/down/packages/
total 3.1M
-rw-r--r--. 1 root root 3.1M May  5 04:44 centos_7.tgz

通过执行上面的操作，我们完成了 kubeasz 离线部署 k8s 集群所需离线包的下载，下一期我们实战如何利用离线包安装部署 3 个 Master 节点 的 k8s 集群。