标签:resolv.conf 域名解析 /etc/hosts dns
[root@fortress02-new etc]# cat /etc/resolv.conf
# Generated by NetworkManager
# No nameservers found; try putting DNS servers into your
# ifcfg files in /etc/sysconfig/network-scripts like so:
# DNS1=xxx.xxx.xxx.xxx
# DNS2=xxx.xxx.xxx.xxx
# DOMAIN=lab.foo.com bar.foo.com
nameserver 8.8.8.8
nameserver 4.4.4.4
search localdomain
系统优先识别网卡配置文件中dns解析地址,如果没有配置,则去/etc/resolv.conf读取dns的ip地址。
[root@fortress02-new etc]# cat /etc/sysconfig/network-scripts/ifcfg-em1
# Generated by dracut initrd
DEVICE="em1"
ONBOOT=yes
NETBOOT=yes
UUID="17277656-0c5f-4d24-9eb9-ed30ba59d145"
BOOTPROTO=static
IPADDR=122.x.x.2
NETMASK=255.255.255.248
GATEWAY=122.x.x.1
HWADDR="e8:9a:8f:50:4f:40"
TYPE=Ethernet
NAME="em1"
DNS1=8.8.8.8
DNS2=202.106.0.20
IPADDR1=122x.x.3
PREFIX1=29
IPADDR2=122.x.x.4
PREFIX1=29
二、本地host域名解析
[root@fortress02-new etc]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
122.x.x.2:8888 jira.moxxg.com
实践经验:
以后大型服务器集群,最好使用本地域名解析,开发只需要使用固定域名,日后机房迁移,IP改变后只需要修改本地/etc/hosts的映射,例如
淘宝开发时都是指定域名,不使用ip,换机房或服务器后,修改程序中对应ip,麻烦。
taobao:
172.38.18.23 realtime-search.config-vip.taobao.com
/etc/resov.conf域名解析dns配置文件,和/etc/hosts本地域名解析文件
标签:resolv.conf 域名解析 /etc/hosts dns
原文地址:http://jasonzhu.blog.51cto.com/5594807/1750949