架构师成长之路6.3 DNS服务器搭建(部署主从DNS)
部署主DNS : 点击
部署从DNS : 如下步骤
1.与主DNS一样,安装bind
yum -y install bind-utils bind bind-devel bind-chroot bind-libs
2.与主DNS一样,编辑/etc/named.conf
options {
version "1.1.1";
listen-on port 53 {any;}; #表示使用53端口
directory "/var/named/chroot/etc/";#用来指定zone(A记录/MX记录等)文件配置路径,注意chroot加强安全性
pid-file "/var/named/chroot/var/run/named/named.pid"; #当服务起来的时候,pid的位置
allow-query { any; };#允许解析访问的权限,可以是ip地址或ip段
Dump-file "/var/named/chroot/var/log/binddump.db";
Statistics-file "/var/named/chroot/var/log/named_stats";#可以看到解析数量/成功率等,用于监控
zone-statistics yes;# 配置yes,才能写入
memstatistics-file "log/mem_stats";
empty-zones-enable no; #不允许配置zone,却没有记录
forwarders {202.106.196.115;8.8.8.8; };#外部转发至以下IP地址
}; key "rndc-key" { # 生成rndc控制命令的key文件,rndc与bind之间使用md5认证
algorithm hmac-md5;
secret "Eqw4hClGExUWeDkKBX/pBg==";
}; controls {
inet 127.0.0.1 port 953 #连接的实际是953,不是53
allow { 127.0.0.1; } keys { "rndc-key"; };
}; logging { #指定日志记录分类和他们的目标位置
channel warning {
file "/var/named/chroot/var/log/dns_warning" versions 10 size 10m;#日志轮转10次,每次10M
severity warning;
print-category yes;
print-severity yes;
print-time yes;
};
channel general_dns {
file "/var/named/chroot/var/log/dns_log" versions 10 size 100m;#日志轮转10次,每次100M
severity info;
print-category yes;
print-severity yes;
print-time yes;
};
category default {
warning;
};
category queries {
general_dns;
};
}; include "/var/named/chroot/etc/view.conf"; # viem简单实现智能DNS功能
3.与主DNS一样,编辑/etc/rndc.key
key "rndc-key" {
algorithm hmac-md5;
secret "Eqw4hClGExUWeDkKBX/pBg==";
};
4.与主DNS一样,编辑/etc/rndc.conf
key "rndc-key" {
algorithm hmac-md5;
secret "Eqw4hClGExUWeDkKBX/pBg==";
}; options {
default-key "rndc-key";
default-server 127.0.0.1;
default-port 953;
};
5.编辑/var/named/chroot/etc/view.conf
view "SlaveView1" {
allow-transfer {
#dns-ip-list;
};
notify yes;
also-notify {
#dns-ip-list;
}; # ixfr-from-differences yes;
zone "carlos.com" {
type slave; #master:表示定义的是主域名服务器,slave :表示定义的是辅助域名服务器
masters {192.168.56.13;}
file "carlos.com.zone";
};
};
6.修改目录权限
cd /var && chown -R named.named named/ #修改目录权限
/etc/init.d/named start #启动
chkconfig named on #加开机启动
回到主DNS,master设备,执行rndc reload
回到从DNS,在/etc/chroot/etc 下面是否生成slave.carlos.com.zone文件,若有表示已经自动同步过来。
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