2017-03-17补充了CentOS7和CentOS6的差异

Wechat-Group · Mar 17, 2017 · 9cc57ca · 9cc57ca
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diff --git a/CentOS-7-Install.md b/CentOS-7-Install.md
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+# CentOS 安装 
+
+
+## 概括
+
+- 本教程中主要演示了 VMware Workstation 下安装 `CentOS 7.3` 的过程。
+- VMware 的使用细节可以看这篇：[CentOS 6 安装](CentOS-Install.md)
+
+## VMware 下安装 CentOS 过程
+
+- VMware Workstation 的介绍和下载
+ - 官网：<https://www.vmware.com/products/workstation>
+ - wiki：<https://zh.wikipedia.org/wiki/VMware_Workstation>
+ - 百度 wiki：<http://baike.baidu.com/view/555554.htm>
+ - 百度云下载（64 位）：<http://pan.baidu.com/s/1eRuJAFK>
+ - 官网下载：<http://www.vmware.com/products/workstation/workstation-evaluation>
+
+
+- 安装细节开始：
+ - ![VMware 下安装](images/CentOS-7-Install-a-1.jpg) 
+ - ![VMware 下安装](images/CentOS-7-Install-a-2.jpg)
+ - ![VMware 下安装](images/CentOS-7-Install-a-3.jpg)
+ - ![VMware 下安装](images/CentOS-7-Install-a-4.jpg)
+ - ![VMware 下安装](images/CentOS-7-Install-a-5.jpg)
+    - 如上图，默认是最小安装，点击进去，选择桌面安装。
+    - 如上图，默认是自动分区，如果懂得分区，点击进去，进行手动分区，CentOS 7 少了主分区，逻辑分区的选择了。
+ - ![VMware 下安装](images/CentOS-7-Install-a-6.jpg)
+    - 如上图，root 密码必须设置，我习惯测试的时候是：123456
+    - 我没有创建用户，喜欢用 root
+ - ![VMware 下安装](images/CentOS-7-Install-a-7.jpg)
+ - ![VMware 下安装](images/CentOS-7-Install-a-8.jpg)
+    - 如上图，许可证必须点击进去勾选同意相关协议。
+    - 如上图，网络可以稍后在设置，主机名可以现在先填写
+ - ![VMware 下安装](images/CentOS-7-Install-a-9.jpg)
+ - ![VMware 下安装](images/CentOS-7-Install-a-10.jpg)
+ - ![VMware 下安装](images/CentOS-7-Install-a-11.jpg)
+ - ![VMware 下安装](images/CentOS-7-Install-a-12.jpg)
+    - 如上图右上角，一般我们都选择跳过
+ - ![VMware 下安装](images/CentOS-7-Install-a-13.jpg)
+ - ![VMware 下安装](images/CentOS-7-Install-a-14.jpg)
+ - ![VMware 下安装](images/CentOS-7-Install-a-15.jpg)
+ - ![VMware 下安装](images/CentOS-7-Install-a-16.jpg)
+	- 到此完成，其他该做啥就做啥
diff --git a/CentOS-Virtual-Machine-Copy-Settings.md b/CentOS-Virtual-Machine-Copy-Settings.md
@@ -19,7 +19,7 @@
     - 修改 IP 地址
     - 把 HWADDR 的值改为上面要求记下来的：00:0c:29:4c:46:01
 
-- 命令：`nmcli con`
+- 命令：`nmcli con > /opt/info.txt`
     - 如果显示两行 UUID 的信息的话，复制不是 System eth0 的那个 UUID 值，下面有用。
     - 编辑：`sudo vim /etc/sysconfig/network-scripts/ifcfg-eth0`
     - 把文件中的 UUID 值 改为上面要求复制的 UUID 值。

diff --git a/CentOS6-and-CentOS7.md b/CentOS6-and-CentOS7.md
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+# CentOS 6 和 CentOS 7 介绍
+
+## 总体差异
+
+- ![总体差异](images/CentOS6-and-CentOS7-a-1.png)
+
+## 想装回过去的一些工具
+
+- 安装：`yum install -y tree net-tools bind-utils tree sysstat vim-en* lrzsz NetworkManager-tui ntp ntpdate iftop tcpdump telnet traceroute`
+
+## 查看版本号/主机名
+
+- `cat /etc/redhat-release`
+- `cat /etc/hostname`
+
+## 常用配置差异
+
+- [CentOS 网络配置](centos-settings/CentOS-Network-Settings.md)
+- [CentOS 图形界面的关闭与开启](centos-settings/Close-XWindow.md)
+
+## systemctl 的用法
+
+- 相当于 CentOS 6 的：service nginx stop
+- `systemctl is-enabled iptables.service` #查询服务是否开机启动
+- `systemctl enable iptables.service` #开机运行服务
+- `systemctl disable iptables.service` #取消开机运行
+- `systemctl start iptables.service` #启动服务
+- `systemctl stop iptables.service` #停止服务
+- `systemctl restart iptables.service` #重启服务
+- `systemctl reload iptables.service` #重新加载服务配置文件
+- `systemctl status iptables.service` #查询服务运行状态
+- `systemctl --failed` #显示启动失败的服务
+- `systemctl list-units --type=service` #查看所有服务
+- `systemctl is-enabled httpd` #查看httpd服务是否开机启动
+- 对于启动脚本的存放位置，也不再是 `/etc/init.d/`（这个目录也是存在的），而是 `/usr/lib/systemd/system/`
+
+## 关闭 firewall 使用 iptables
+
+- 关闭 firewall
+	- `systemctl stop firewalld.service` #停止firewall
+	- `systemctl disable firewalld.service` #禁止firewall开机启动
+- 安装 iptables
+	- yum install -y iptables-services
+- 启动 iptables
+	- systemctl restart iptables.service #最后重启防火墙使配置生效
+	- systemctl enable iptables.service #设置防火墙开机启动
+	- 其他使用照旧
+
+## ifconfig 没有了
+
+- 查看网络配置：`ip a`
+- 装回 ifconfig：`yum insall -y net-tools`
+
+## 设置时区
+
+- `timedatectl set-timezone Asia/Shanghai`
+- `timedatectl status`
+
+
+## 资料
+
+- <http://blog.topspeedsnail.com/archives/3017>
+- <http://chenbaocheng.com/2015/07/15/Centos-7-%E5%AE%89%E8%A3%85%E9%85%8D%E7%BD%AEiptables/>
+- <http://cuidehua.blog.51cto.com/5449828/1858374>
+- <http://putty.biz/760>
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