openstack基础环境准备（一）

 一、环境介绍

操作系统	ip地址	主机名	服务
centos7.5	192.168.56.11	linux-node1	控制节点
centos7.5	192.168.56.12	linux-node2	计算节点

二、环境设置

1、重名网卡

启动操作系统时输入如下信息：

net.ifnames=0  biosdevname=0

 2、禁用网络管理

systemctl   disable   NetworkManager

3、关闭防火墙 

systemctl   disable   firewalld 

 4、禁用selinux

[root@linux-node1 ~]# vi  /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
# SELINUXTYPE= can take one of three two values:
#     targeted - Targeted processes are protected,
#     minimum - Modification of targeted policy. Only selected processes are protected.
#     mls - Multi Level Security protection.
SELINUXTYPE=targeted

5、修改主机名

vi  /etc/hostname

6、设置DNS解析

vi /etc/resolv.conf
nameserver   192.168.56.2

7、修改网卡信息

[root@linux-node1 ~]# vi /etc/sysconfig/network-scripts/ifcfg-eth0 
TYPE=Ethernet
BOOTPROTO=static
DEFROUTE=yes
NAME=eth0
DEVICE=eth0
ONBOOT=yes
IPADDR=192.168.56.11
NETMASK=255.255.255.0
GATEWAY=192.168.56.2

8、安装eprl仓库

rpm   -ivh   http://mirrors.aliyun.com/epel/epel-release-latest-7.noarch.rpm

9、安装常用命令

yum  install  -y net-tools  vim  lrzsz  tree screen   lsof tcpdump  nc mtr  nmap  telnet    wget

10、设置host

192.168.56.11 linux-node1  linux-node1.example.com
192.168.56.12 linux-node2  linux-node2.example.com