kubernetes部署安装

最新推荐文章于 2022-09-27 16:20:56 发布

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最新推荐文章于 2022-09-27 16:20:56 发布 · 589 阅读

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#kubernetes #docker

软硬件要求

硬件要求如下：

CUP：
- Master: 至少2核，推荐4核及以上
- Node：至少4核
内存：
- Master：至少4GB
- Node：至少4GB，推荐16G以上

系统要求

操作系统

基于x86_64版本的Linux发行版，内核版本3.10及以上，推荐 RHEL 7/ CentOS 7

关闭交换分区

先临时关闭
```
[root@localhost ~]# swapoff -a
```

删除系统对swap的加载

打开/etc/fstab, 注释掉 /dev/mapper/centos-swap所在行:

/dev/mapper/centos-root /                       xfs     defaults        0 0
UUID=34ceffd3-4311-4135-bf10-863c6a39568e /boot                   xfs     defaults        0 0
# /dev/mapper/centos-swap swap                    swap    defaults        0 0

关闭防火墙

[root@localhost ~]# systemctl stop firewalld
[root@localhost ~]# systemctl disable firewalld
Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
[root@localhost ~]# systemctl status firewalld
● firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
   Active: inactive (dead)
     Docs: man:firewalld(1)

7月 05 11:49:14 localhost.localdomain systemd[1]: Starting firewalld - dynamic firewall d.....
7月 05 11:49:15 localhost.localdomain systemd[1]: Started firewalld - dynamic firewall daemon.
7月 05 04:29:02 localhost.localdomain systemd[1]: Stopping firewalld - dynamic firewall d.....
7月 05 04:29:02 localhost.localdomain systemd[1]: Stopped firewalld - dynamic firewall daemon.
Hint: Some lines were ellipsized, use -l to show in full.

执行systemctl status firewalld显示Active为inactive (dead)则表明关闭成功

关闭SELINUX

修改系统文件/etc/sysconfig/selinux，将SELINUX的值由enforcing修改为：disabled，然后重启系统

iptables相关设置

打开/etc/sysctl.conf，加入以下内容：

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

执行如下命令，使设置生效：

[root@master ~]# sysctl -p
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1

使用kubeadm工具安装kubernetes集群

安装docker

设置docker yum源

[root@localhost ~]# yum install -y yum-utils # 安装yum-util，提供yum-config-manager功能 
[root@localhost ~]# yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo # 安装docker阿里云yum源
[root@localhost ~]# yum makecache # 创建yum缓存

安装docker-ce

[root@localhost ~]# yum install -y docker-ce

启动docker

[root@localhost ~]# systemctl enable docker
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.
[root@localhost ~]# systemctl start docker
[root@localhost ~]# systemctl status docker
● docker.service - Docker Application Container Engine
   Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
   Active: active (running) since 日 2020-07-05 04:58:22 EDT; 7s ago
     Docs: https://docs.docker.com
 Main PID: 1651 (dockerd)
    Tasks: 8
   Memory: 142.5M
   CGroup: /system.slice/docker.service
           └─1651 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock

7月 05 04:58:22 localhost.localdomain dockerd[1651]: time="2020-07-05T04:58:22.366983035-...pc
7月 05 04:58:22 localhost.localdomain dockerd[1651]: time="2020-07-05T04:58:22.366996606-...pc
7月 05 04:58:22 localhost.localdomain dockerd[1651]: time="2020-07-05T04:58:22.367003590-...pc
7月 05 04:58:22 localhost.localdomain dockerd[1651]: time="2020-07-05T04: