有关/etc/resolv.conf、/etc/hosts、/etc/sysconfig/network

╰+哭是因爲堅強的太久メ 2022-05-28 11:29 172阅读 0赞

*  [阿里云 ][Link 1] > [教程中心][Link 2]  >  [linux教程 ][linux_] > [有关/etc/resolv.conf、/etc/hosts、/etc/sysconfig/network ][etc_resolv.conf_etc_hosts_etc_sysconfig_network]
 *  有关/etc/resolv.conf、/etc/hosts、/etc/sysconfig/network
 *  发布时间：2018-01-19 来源：网络 上传者：用户
    
    关键字: [ETC][] [sysconfig][] [network][] [有关][Link 3] [resolv][] [hosts][] [conf][]
    
    [发表文章][Link 4]
 *  **摘要：**1./etc/resolv.conf/etc/resolv.conf设置linux本地的客户端DNS的配置文件DNS可以实现域名和IP的互相解析setup->networkconfiguration->DNSconfiguration上述设置实际上是修改/etc/resolv.cof这个文件\[root@muban~\]\#cat/etc/resolv.conf;generatedby/sbin/dhclient-scriptnameserver8.8.8.8负责域名与
 *  **1./etc/resolv.conf**
    
    /etc/resolv.conf设置linux本地的客户端DNS的配置文件
    
    DNS可以实现域名和IP的互相解析  
    setup->network configuration->DNS configuration
    
    ![有关/etc/resolv.conf、/etc/hosts、/etc/sysconfig/network][etc_resolv.conf_etc_hosts_etc_sysconfig_network 1]
    
    上述设置实际上是修改/etc/resolv.cof这个文件
    
    \[root@muban ~\]\# cat /etc/resolv.conf; generated by /sbin/dhclient-scriptnameserver 8.8.8.8
    
    负责域名与IP互相解析的服务就是DNS(domain name system)  
    www.baidu.com <=>203.71.88.10
    
    小结:
    
    1.  客户端DNS可以在网卡配置文件里设置(ifcfg-eth0)
    2.  客户端DNS也可以在/etc/resolv.conf里设置
    3.  网卡里的设置优先于/etc/resolv.f
    
    **2./etc/hosts**
    
    /etc/hosts设定用户IP与名字(或域名)的对应解析表。主机名和IP解析,相当于DNS工具(手动维护的)。
    
    \[root@muban ~\]\# ping mubanping: unknown host muban
    
    vi /etc/hosts  
    ![有关/etc/resolv.conf、/etc/hosts、/etc/sysconfig/network][etc_resolv.conf_etc_hosts_etc_sysconfig_network 2]
    
    \[ [aliyunzixun@xxx.com][etc_resolv.conf_etc_hosts_etc_sysconfig_network] ~\]\# tail -1 /etc/hosts192.168.31.199 muban\[ [aliyunzixun@xxx.com][etc_resolv.conf_etc_hosts_etc_sysconfig_network] ~\]\# ping mubanPING muban (192.168.31.199) 56(84) bytes of data.64 bytes from muban (192.168.31.199): icmp\_seq=1 ttl=64 time=0.154 ms64 bytes from muban (192.168.31.199): icmp\_seq=2 ttl=64 time=0.023 ms
    
    /etc/hosts类似C:/Windows/System32/drivers/etc/hosts,LAN内IP域名解析文件。  
    开发、测试时做临时的域名解析常用,英文hosts - The static table lookup for host names。  
    host的解析在机房常用的服务器互相调用中也会常用,如门户网站的解析真实案例:  
    alibaba:  
    172.26.58.40 vafd.china.alibaba.com  
    172.23.54.47 normyl.vip.xyi.cn.alidc.net  
    小结:  
    hosts 的作用
    
    1.  开发、产品、测试等人员,用于通过正式的域名测试产品。
    2.  服务器之间的调用可以用域名(内部的DNS),方便迁移。
    
    **3./etc/sysconfig/network**
    
    /etc/sysconfig/network设定主机名与网卡启动、网关配置
    
    \[root@muban ~\]\# cat /etc/sysconfig/networkNETWORKING=yesHOSTNAME=muban
    
    修改主机名:
    
    1.  vi /etc/sysconfig/network 修改HOSTNAME(永久改)
    2.  hostname再修改(临时改)
        
        修改了/etc/sysconfig/network下的HOSTNAME后,然后使用hostname命令使其生效。但是需要注意的是当前会话还是不会变化,但是后续新建会话会生效。  
        结合永久性修改和临时性修改hostname,使其不必重启Linux服务器
    
    ![有关/etc/resolv.conf、/etc/hosts、/etc/sysconfig/network][etc_resolv.conf_etc_hosts_etc_sysconfig_network 3]
    
    ![有关/etc/resolv.conf、/etc/hosts、/etc/sysconfig/network][etc_resolv.conf_etc_hosts_etc_sysconfig_network 4]

以上是[有关/etc/resolv.conf、/etc/hosts、/etc/sysconfig/network][etc_resolv.conf_etc_hosts_etc_sysconfig_network]的内容，更多 [ETC ][ETC][sysconfig ][sysconfig][network ][network][有关 ][Link 3][resolv ][resolv][hosts ][hosts][conf ][conf]的内容，请您使用右上方搜索功能获取相关信息。

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[ETC]: https://www.aliyun.com/jiaocheng/topic_16050.html
[sysconfig]: https://www.aliyun.com/jiaocheng/topic_25063.html
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[resolv]: https://www.aliyun.com/jiaocheng/topic_23646.html
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[conf]: https://www.aliyun.com/jiaocheng/topic_11021.html
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[etc_resolv.conf_etc_hosts_etc_sysconfig_network 1]: /images/20220528/b913168f791a4cdfbb2cabdc770bf9a2.png
[etc_resolv.conf_etc_hosts_etc_sysconfig_network 2]: /images/20220528/10cd306539284d58842a02b4c94ab00e.png
[etc_resolv.conf_etc_hosts_etc_sysconfig_network 3]: /images/20220528/d3ba7129f02442d8b90681409ce2b368.png
[etc_resolv.conf_etc_hosts_etc_sysconfig_network 4]: /images/20220528/75db239db9fd481396130ec2c134a518.png