单节点rancher快速部署
我们知道kubernetes学习成本非常高,如果想要快速体验Paas云平台的话，连部署搭建对于新手来说都是难以下手。
rancher是一个kubernetes-as-a-service解决方案,也就是说rancher将kubernetes集群搭建与应用编排实现了打包一体化,可以通过图形界面的操作就可以来部署kubernetes集群与应用了。
参考官网: https://rancher.com/
下面我们来使用容器方式快速部署单节点rancher
环境准备
准备工作:
1, 配置静态IP地址(要求能上公网,因为要拉取镜像)
# vim /etc/sysconfig/network-scripts/ifcfg-eth0
BOOTPROTO="static"
name="eth0"
DEVICE="eth0"
ONBOOT="yes"
IPADDR=192.168.122.12
NETMASK=255.255.255.0
GATEWAY=192.168.122.1
DNS1=192.168.122.1
# systemctl stop NetworkManager
# systemctl disable NetworkManager
# systemctl restart network
# systemctl enable network
2, 主机名和主机名绑定
# hostnamectl set-hostname --static rancher
# vim /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.122.12 rancher
3, 所有节点关闭centos7的firewalld防火墙,打开iptables并保存为空规则、
# systemctl stop firewalld
# systemctl disable firewalld
# yum install iptables-services -y
# systemctl restart iptables
# systemctl enable iptables
# iptables -F
# iptables -F -t nat
# iptables -F -t mangle
# iptables -F -t raw
# service iptables save
iptables: Saving firewall rules to /etc/sysconfig/iptables:[ OK ]
4, 所有节点关闭selinux
# vim /etc/selinux/config
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
# enforcing - SELinux security policy is enforced.
# permissive - SELinux prints warnings instead of enforcing.
# disabled - No SELinux policy is loaded.
SELINUX=disabled 确认为disabled,如果不是请改成disabled(需要reboot重启生效)
# SELINUXTYPE= can take one of three values:
# targeted - Targeted processes are protected,
# minimum - Modification of targeted policy. Only selected processes are protected.
# mls - Multi Level Security protection.
SELINUXTYPE=targeted
5, 所有节点 时间同步
# systemctl restart ntpd
# systemctl enabled ntpd
需要保证安装docker,并启动服务
# wget https://download.docker.com/linux/centos/docker-ce.repo -O /etc/yum.repos.d/docker-ce.repo
# yum install docker-ce -y
# systemctl restart docker
# systemctl enable docker
配置镜像加速器
# vim /etc/docker/daemon.json
{
"registry-mirrors": ["https://42h8kzrh.mirror.aliyuncs.com"]
}
# systemctl daemon-reload
# systemctl restart docker
启动rancher
[root@rancher ~]# docker run -d --restart=unless-stopped -p 80:80 -p 443:443 --name rancher -v /var/lib/rancher/:/var/lib/rancher/ rancher/rancher:stable
通过浏览器访问配置
直接访问节点IP即可: https://192.168.122.12
注意: 因为我们没有配置SSL证书, 所以浏览器会报不安全的连接,如果要对公网使用，建议使用CA认证的证书。
添加kubernetes集群
直接在主页面添加集群
选择集群类型
集群名称与选项自定义
定义集群主机选项
安装rancher-agent
**通过下面命令安装rancher-agent后点完成**
