centos7下www安装与配置

以下是在CentOS 7下安装和配置DNS的步骤：

1.安装DNS

yum install -y bind bind-utils

2.配置主配置文件/etc/named.conf

vi /etc/named.conf

在options块中添加以下内容：

listen-on port 53 { any; };
allow-query { any; };

在zone块中添加以下内容：

zone "lml.com" IN {
    type master;
    file "lml.com.zone";
    allow-update { none; };
};
zone "192.168.159.in-addr.arpa" IN {
    type master;
    file "159.168.192.zone";
    allow-update { none; };
};

3.配置正向解析配置文件/var/named/lml.com.zone

vi /var/named/lml.com.zone

添加以下内容：

$TTL 86400
@   IN  SOA     ns1.lml.com. root.lml.com. (
        2011071001  ;Serial
        3600        ;Refresh
        1800        ;Retry
        604800      ;Expire
        86400       ;Minimum TTL
)
@       IN  NS      ns1.lml.com.
ns1     IN  A       192.168.159.130
www     IN  A       192.168.159.130

4.配置反向解析配置文件/var/named/159.168.192.zone

vi /var/named/159.168.192.zone

添加以下内容：

$TTL 86400
@   IN  SOA     ns1.lml.com. root.lml.com. (
        2011071001  ;Serial
        3600        ;Refresh
        1800        ;Retry
        604800      ;Expire
        86400       ;Minimum TTL
)
@       IN  NS      ns1.lml.com.
130     IN  PTR     www.lml.com.

5.启动DNS服务并设置开机自启动

systemctl start named
systemctl enable named

6.关闭防火墙和SELinux

systemctl stop firewalld && setenforce 0