mac上kubeadmin安装k8s（完整）

Posted 2022-01-30 DevOperaterVita

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1.安装virtualBox

这个自行百度，安装好后，配置一下

这里我一点开，就这样，没有修改。

mac上kubeadmin安装k8s（完整）_k8s

2.vagrant安装虚拟机

2.1.安装vagrant

dz0400819@MacBook-Pro  ~  brew install vagrant

2.2.vagrant创建虚拟机

这里安装的是ubuntu20.04,如果想要其他版本，可以到https://app.vagrantup.com/ubuntu这里找

创建虚拟机
~/Desktop/docker/host2  vagrant init ubuntu/focal64
A `Vagrantfile` has been placed in this directory. You are now
ready to `vagrant up` your first virtual environment! Please read
the comments in the Vagrantfile as well as documentation on
`vagrantup.com` for more information on using Vagrant.

启动虚拟机
 ~/Desktop/docker/host2  vagrant up
 
 进入虚拟机
 ~/Desktop/docker/host2  vagrant ssh

2.3.内存至少为2G，少了报错

mac上kubeadmin安装k8s（完整）_kubeadm_02

3.安装docker

3.1.安装docker

安装docker
root@ubuntu-focal:~# curl -fsSL https://get.docker.com | bash -s docker --mirror Aliyun

3.2.查看docker的cgroup driver

Cgroup Driver: cgroupfs

root@ubuntu-focal:~# docker info
Client:
 Context:    default
 Debug Mode: false
 Plugins:
  app: Docker App (Docker Inc., v0.9.1-beta3)
  buildx: Docker Buildx (Docker Inc., v0.7.1-docker)
  scan: Docker Scan (Docker Inc., v0.12.0)

Server:
 Containers: 0
  Running: 0
  Paused: 0
  Stopped: 0
 Images: 0
 Server Version: 20.10.12
 Storage Driver: overlay2
  Backing Filesystem: extfs
  Supports d_type: true
  Native Overlay Diff: true
  userxattr: false
 Logging Driver: json-file
 Cgroup Driver: cgroupfs
 Cgroup Version: 1
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
 Swarm: inactive
 Runtimes: io.containerd.runc.v2 io.containerd.runtime.v1.linux runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: 7b11cfaabd73bb80907dd23182b9347b4245eb5d
 runc version: v1.0.2-0-g52b36a2
 init version: de40ad0
 Security Options:
  apparmor
  seccomp
   Profile: default
 Kernel Version: 5.4.0-96-generic
 Operating System: Ubuntu 20.04.3 LTS
 OSType: linux
 Architecture: x86_64
 CPUs: 2
 Total Memory: 1.937GiB
 Name: ubuntu-focal
 ID: QK46:H3FX:EQIZ:QGHG:OLKZ:T3ID:QA65:LXNC:BRXR:HVUK:RCOQ:LDLO
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 Registry: https://index.docker.io/v1/
 Labels:
 Experimental: false
 Insecure Registries:
  127.0.0.0/8
 Live Restore Enabled: false

WARNING: No swap limit support

3.3修改docker的cgroup driver

修改为systemd，要和kubelet的cgroup driver保持一致，不一致kubelet启动不了。

kubelet的1.22.2版本的cgroup driver是systemd，哈哈，因为坑我已经踩过一遍了。

root@ubuntu-focal:~# vim /etc/docker/daemon.json
root@ubuntu-focal:~# cat /etc/docker/daemon.json

  "exec-opts": ["native.cgroupdriver=systemd"]

3.4启动docker并查看状态

启动后最好在docker info查看下cgroup driver是不是systemd

root@ubuntu-focal:~# service docker start
root@ubuntu-focal:~# service docker status
● docker.service - Docker Application Container Engine
     Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)
     Active: active (running) since Sat 2022-01-29 11:27:54 UTC; 3min 28s ago
TriggeredBy: ● docker.socket
       Docs: https://docs.docker.com
   Main PID: 721 (dockerd)
      Tasks: 8
     Memory: 107.7M
     CGroup: /system.slice/docker.service
             └─721 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock

Jan 29 11:27:53 ubuntu-focal dockerd[721]: time="2022-01-29T11:27:53.271733866Z" level=warning msg="Your kernel does not support CPU realtime scheduler"
Jan 29 11:27:53 ubuntu-focal dockerd[721]: time="2022-01-29T11:27:53.271869462Z" level=warning msg="Your kernel does not support cgroup blkio weight"
Jan 29 11:27:53 ubuntu-focal dockerd[721]: time="2022-01-29T11:27:53.272000492Z" level=warning msg="Your kernel does not support cgroup blkio weight_device"
Jan 29 11:27:53 ubuntu-focal dockerd[721]: time="2022-01-29T11:27:53.277560109Z" level=info msg="Loading containers: start."
Jan 29 11:27:53 ubuntu-focal dockerd[721]: time="2022-01-29T11:27:53.948408290Z" level=info msg="Default bridge (docker0) is assigned with an IP address 172.17.0.0/16. Daemon option --bip can be>
Jan 29 11:27:54 ubuntu-focal dockerd[721]: time="2022-01-29T11:27:54.139527485Z" level=info msg="Loading containers: done."
Jan 29 11:27:54 ubuntu-focal dockerd[721]: time="2022-01-29T11:27:54.413437051Z" level=info msg="Docker daemon" commit=459d0df graphdriver(s)=overlay2 version=20.10.12
Jan 29 11:27:54 ubuntu-focal dockerd[721]: time="2022-01-29T11:27:54.415677294Z" level=info msg="Daemon has completed initialization"
Jan 29 11:27:54 ubuntu-focal systemd[1]: Started Docker Application Container Engine.
Jan 29 11:27:54 ubuntu-focal dockerd[721]: time="2022-01-29T11:27:54.503854906Z" level=info msg="API listen on /run/docker.sock"

4.Letting iptables see bridged traffic

$ cat <<EOF | sudo tee /etc/modules-load.d/k8s.conf
br_netfilter
EOF

$ cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF

$ sudo sysctl --system

5.安装相关软件

5.1安装net-tools

因为要查看虚拟机的网络

root@ubuntu-focal:~# ifconfig

Command ifconfig not found, but can be installed with:

apt install net-tools

root@ubuntu-focal:~# apt-get update
root@ubuntu-focal:~# apt install net-tools
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
  net-tools
0 upgraded, 1 newly installed, 0 to remove and 4 not upgraded.
Need to get 196 kB of archives.
After this operation, 864 kB of additional disk space will be used.
Get:1 http://archive.ubuntu.com/ubuntu focal/main amd64 net-tools amd64 1.60+git20180626.aebd88e-1ubuntu1 [196 kB]
Fetched 196 kB in 3s (61.0 kB/s)
Selecting previously unselected package net-tools.
(Reading database ... 63485 files and directories currently installed.)
Preparing to unpack .../net-tools_1.60+git20180626.aebd88e-1ubuntu1_amd64.deb ...
Unpacking net-tools (1.60+git20180626.aebd88e-1ubuntu1) ...
Setting up net-tools (1.60+git20180626.aebd88e-1ubuntu1) ...
Processing triggers for man-db (2.9.1-1) ...

5.2Update the apt package index and install packages needed to use the Kubernetes apt repository:

root@ubuntu-focal:~# apt-get update
Hit:1 https://mirrors.aliyun.com/docker-ce/linux/ubuntu focal InRelease
Hit:2 http://security.ubuntu.com/ubuntu focal-security InRelease
Hit:3 http://archive.ubuntu.com/ubuntu focal InRelease
Hit:4 http://archive.ubuntu.com/ubuntu focal-updates InRelease
Hit:5 http://archive.ubuntu.com/ubuntu focal-backports InRelease
Reading package lists... Done


root@ubuntu-focal:~# apt-get install -y apt-transport-https ca-certificates curl
Reading package lists... Done
Building dependency tree
Reading state information... Done
ca-certificates is already the newest version (20210119~20.04.2).
curl is already the newest version (7.68.0-1ubuntu2.7).
apt-transport-https is already the newest version (2.0.6).
0 upgraded, 0 newly installed, 0 to remove and 4 not upgraded.

5.3Install kubeadm

root@ubuntu-focal:~# curl -s https://mirrors.aliyun.com/kubernetes/apt/doc/apt-key.gpg | sudo apt-key add -
OK

5.4Add the Kubernetes apt repository

$ sudo tee /etc/apt/sources.list.d/kubernetes.list <<-EOF
deb https://mirrors.aliyun.com/kubernetes/apt kubernetes-xenial main
EOF

5.5安装kubelet

更新apt package index

更新apt package index
root@ubuntu-focal:~# apt-get update

查看kubelet有哪些版本

root@ubuntu-focal:~# apt-cache policy kubelet

安装kubelet 1.22.2

因为k8s集群就是安装的这个版本，版本要相同，都则会报错

root@ubuntu-focal:~# apt-get install kubelet=1.22.2-00
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
  conntrack ebtables kubernetes-cni socat
Suggested packages:
  nftables
The following NEW packages will be installed:
  conntrack ebtables kubelet kubernetes-cni socat
0 upgraded, 5 newly installed, 0 to remove and 4 not upgraded.
Need to get 47.3 MB of archives.
After this operation, 227 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 https://mirrors.aliyun.com/kubernetes/apt kubernetes-xenial/main amd64 kubernetes-cni amd64 0.8.7-00 [25.0 MB]
Get:2 http://archive.ubuntu.com/ubuntu focal/main amd64 conntrack amd64 1:1.4.5-2 [30.3 kB]
Get:3 http://archive.ubuntu.com/ubuntu focal/main amd64 ebtables amd64 2.0.11-3build1 [80.3 kB]
Get:4 http://archive.ubuntu.com/ubuntu focal/main amd64 socat amd64 1.7.3.3-2 [323 kB]
Get:5 https://mirrors.aliyun.com/kubernetes/apt kubernetes-xenial/main amd64 kubelet amd64 1.22.2-00 [21.9 MB]
Fetched 47.3 MB in 6s (7442 kB/s)
Selecting previously unselected package conntrack.
(Reading database ... 63534 files and directories currently installed.)
Preparing to unpack .../conntrack_1%3a1.4.5-2_amd64.deb ...
Unpacking conntrack (1:1.4.5-2) ...
Selecting previously unselected package ebtables.
Preparing to unpack .../ebtables_2.0.11-3build1_amd64.deb ...
Unpacking ebtables (2.0.11-3build1) ...
Selecting previously unselected package kubernetes-cni.
Preparing to unpack .../kubernetes-cni_0.8.7-00_amd64.deb ...
Unpacking kubernetes-cni (0.8.7-00) ...
Selecting previously unselected package socat.
Preparing to unpack .../socat_1.7.3.3-2_amd64.deb ...
Unpacking socat (1.7.3.3-2) ...
Selecting previously unselected package kubelet.
Preparing to unpack .../kubelet_1.22.2-00_amd64.deb ...
Unpacking kubelet (1.22.2-00) ...
Setting up conntrack (1:1.4.5-2) ...
Setting up ebtables (2.0.11-3build1) ...
Setting up socat (1.7.3.3-2) ...
Setting up kubernetes-cni (0.8.7-00) ...
Setting up kubelet (1.22.2-00) ...
Created symlink /etc/systemd/system/multi-user.target.wants/kubelet.service → /lib/systemd/system/kubelet.service.
Processing triggers for man-db (2.9.1-1) ...

安装固定版本的kubeadm 和kubectl

root@ubuntu-focal:~# apt-get install -y kubeadm=1.22.2-00 kubectl=1.22.2-00
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
  cri-tools
The following NEW packages will be installed:
  cri-tools kubeadm kubectl
0 upgraded, 3 newly installed, 0 to remove and 5 not upgraded.
Need to get 28.9 MB of archives.
After this operation, 123 MB of additional disk space will be used.
Get:1 https://mirrors.aliyun.com/kubernetes/apt kubernetes-xenial/main amd64 cri-tools amd64 1.19.0-00 [11.2 MB]
Get:2 https://mirrors.aliyun.com/kubernetes/apt kubernetes-xenial/main amd64 kubectl amd64 1.22.2-00 [9038 kB]
Get:3 https://mirrors.aliyun.com/kubernetes/apt kubernetes-xenial/main amd64 kubeadm amd64 1.22.2-00 [8718 kB]
Fetched 28.9 MB in 4s (7822 kB/s)
Selecting previously unselected package cri-tools.
(Reading database ... 63622 files and directories currently installed.)
Preparing to unpack .../cri-tools_1.19.0-00_amd64.deb ...
Unpacking cri-tools (1.19.0-00) ...
Selecting previously unselected package kubectl.
Preparing to unpack .../kubectl_1.22.2-00_amd64.deb ...
Unpacking kubectl (1.22.2-00) ...
Selecting previously unselected package kubeadm.
Preparing to unpack .../kubeadm_1.22.2-00_amd64.deb ...
Unpacking kubeadm (1.22.2-00) ...
Setting up kubectl (1.22.2-00) ...
Setting up cri-tools (1.19.0-00) ...
Setting up kubeadm (1.22.2-00) ...

apt-mark hold

root@ubuntu-focal:~# apt-mark hold kubelet kubeadm kubectl
kubelet was already set on hold.
kubeadm set on hold.
kubectl set on hold.

5.6kubeadm init

查看虚拟机IP：10.0.2.15

root@ubuntu-focal:~# ifconfig
docker0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 172.17.0.1  netmask 255.255.0.0  broadcast 172.17.255.255
        ether 02:42:73:64:74:d0  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

enp0s3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.0.2.15  netmask 255.255.255.0  broadcast 10.0.2.255
        inet6 fe80::cd:1cff:fe36:98  prefixlen 64  scopeid 0x20<link>
        ether 02:cd:1c:36:00:98  txqueuelen 1000  (Ethernet)
        RX packets 93667  bytes 134751544 (134.7 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 22209  bytes 1469134 (1.4 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 140  bytes 16230 (16.2 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 140  bytes 16230 (16.2 KB)
        TX errors 0  dropped 0 overruns 0  carrier 以上是关于mac上kubeadmin安装k8s（完整）的主要内容，如果未能解决你的问题，请参考以下文章 
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