DNS解析综合学习案例
#图右侧为做题前环境配置
#命令为红色
#命令加载内容为绿色
#vi编辑内容为蓝色
1、用户需把/dev/myvg/mylv逻辑卷以支持磁盘配额的方式挂载到网页目录下
[root@localhost ~]# vi /etc/fstab
/dev/myvg/mylv /usr/local/httpd/htdocs/ xfs defaults,usrquota,grpquota 0 0
[root@localhost ~]# mount -a
2、在网页目录下创建测试文件index.html，内容为用户名称，通过浏览器访问测试
[root@localhost ~]# cd /usr/local/httpd/htdocs/
[root@localhost htdocs]# vi index.html
3、创建用户账户，对LVM配置磁盘配额限制用户磁盘容量为软限制80M；硬限制100M、文件数量软限制为80个；硬限制为100个。
[root@localhost htdocs]# useradd laowang
[root@localhost htdocs]# passwd laowang
[root@localhost ~]# edquota -u laowang /dev/myvg/mylv
Disk quotas for user laowang (uid 1001):
Filesystem blocks soft hard inodes soft hard
/dev/mapper/myvg-mylv 0 81920 102400 0 80 100
[root@localhost ~]# quotaon -auvg
4、构建主从DNS域名解析环境
5、主从DNS都可将www.mareenoire.info域名解析为192.168.200.113
6、客户机可通过浏览器访问www.mareenoire.info得到WEB服务器相应内容
7、主域名服务器要同时担任缓存域名服务器功能
8、客户机通过nslookup域名测试工具可解析到www.mareenoire.info等网站的域名解析结果
4、5、6、7、8结合在一起做了
主服务器加缓存服务器功能配置
[root@localhost ~]rpm -qa | grep -w bind
bind-libs-lite-9.9.4-50.el7.x86_64
bind-utils-9.9.4-50.el7.x86_64
]bind-license-9.9.4-50.el7.noarch
bind-libs-9.9.4-50.el7.x86_64
[root@localhost ~]# yum -y install bind
[root@localhost ~]# vi /etc/named.conf
options {
listen-on port 53 { 192.168.200.111; };
directory "/var/named";
dump-file "/var/named/data/cache_dump.db";
statistics-file "/var/named/data/named_stats.txt";
memstatistics-file "/var/named/data/named_mem_stats.txt";
recursing-file "/var/named/data/named.recursing";
secroots-file "/var/named/data/named.secroots";
allow-query { any; };
recursion yes;
};
zone "." IN {
type hint;
file "www.mareenoire.info";
};
zone "www.mareenoire.info" IN {
type master;
file "study.zheng";
allow-transfer { 192.168.200.112; };
};
zone "www.mareenoire.info" IN {
type master;
file "www.mareenoire.info";
allow-transfer { 192.168.200.112; };
};
[root@localhost ~]# named-checkconf /etc/named.conf
[root@localhost ~]# cd /var/named/
[root@localhost ~]# cp named.localhost study.zheng
$TTL 1D
@ IN SOA www.mareenoire.info. www.mareenoire.info. (
100 ; serial
1D ; refresh
1H ; retry
1W ; expire
3H ) ; minimum
NS www.mareenoire.info.
NS www.mareenoire.info.
MX 10 www.mareenoire.info.
mail A 192.168.200.114
www A 192.168.200.113
ns1 A 192.168.200.111
ns2 A 192.168.200.112
[root@localhost ~]# cp study.zheng www.mareenoire.info
$TTL 1D
@ IN SOA www.mareenoire.info. www.mareenoire.info. (
108 ; serial
1D ; refresh
1H ; retry
1W ; expire
3H ) ; minimum
IN NS www.mareenoire.info.
IN NS www.mareenoire.info.
IN MX 10 www.mareenoire.info.
114 IN PTR www.mareenoire.info.
113 IN PTR www.mareenoire.info.
111 IN PTR www.mareenoire.info.
112 IN PTR www.mareenoire.info.
[root@localhost named]# named-checkzone www.mareenoire.info /var/named/study.zheng
[root@localhost named]# named-checkzone www.mareenoire.info /var/named/www.mareenoire.info
[root@localhost named]# systemctl restart named
主服务器加缓存服务器功能配置完毕
从服务器配置
[root@localhost ~]rpm -qa | grep -w bind
bind-libs-lite-9.9.4-50.el7.x86_64
bind-utils-9.9.4-50.el7.x86_64
bind-license-9.9.4-50.el7.noarch
bind-libs-9.9.4-50.el7.x86_64
[root@localhost ~]# yum -y install bind
[root@localhost ~]# vi /etc/named.conf
options {
directory "/var/named";
};
zone "www.mareenoire.info" IN {
type slave;
file "slaves/study.zheng";
masters { 192.168.200.111; };
};
zone "www.mareenoire.info" IN {
type slave;
file "slaves/www.mareenoire.info";
masters { 192.168.200.111; };
};
[root@localhost ~]# named-checkconf /etc/named.conf
[root@localhost named]# systemctl restart named
从服务器配置完毕
测试机window7测试（正、反解析，主服务器、从服务器为DNS解析）
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