【Linux】【Services】【DNS】使用Bind搭建DNS服务

1. 简介

1.1. 实现的功能：DNS解析以及智能转发

1.2. 官方文档：

1.3. 基础概念：http://www.cnblogs.com/demonzk/p/6494968.html

2. 环境：

2.1. OS：Red Hat Enterprise Linux Server release 7.4 (Maipo)

2.2. Kernel：3.10.0-693.el7.x86_64

2.3. Bind：9.9.4-51.el7_4.1

3. 安装：

3.1. 操作系统：（略）

3.2. 配置yum：（略）

3.2. 安装bind

yum install bind

3.3. 在主节点172.16.0.81上修改配置文件/etc/named.conf，监听端口打开，不必要的选项注释掉或者写no

options {
    listen-on port 53 { 172.16.0.81; };
    listen-on-v6 port 53 { ::1; };
    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";
    //allow-query     { localhost; };

    /* 
     - If you are building an AUTHORITATIVE DNS server, do NOT enable recursion.
     - If you are building a RECURSIVE (caching) DNS server, you need to enable 
       recursion. 
     - If your recursive DNS server has a public IP address, you MUST enable access 
       control to limit queries to your legitimate users. Failing to do so will
       cause your server to become part of large scale DNS amplification 
       attacks. Implementing BCP38 within your network would greatly
       reduce such attack surface 
    */
    recursion yes;

    dnssec-enable no;
    dnssec-validation no;

    /* Path to ISC DLV key */
    bindkeys-file "/etc/named.iscdlv.key";

    managed-keys-directory "/var/named/dynamic";

    pid-file "/run/named/named.pid";
    session-keyfile "/run/named/session.key";
};

logging {
        channel default_debug {
                file "/var/log/named/default.log";
                severity dynamic;
        };
    channel query_logs {
        file "/var/log/named/bind.log";
        severity info;
        print-severity yes;
        print-time yes;
        print-category yes;
    };
};

zone "." IN {
    type hint;
    file "named.ca";
};

include "/etc/named.rfc1912.zones";
include "/etc/named.root.key";

zone "hccos.cn" IN {
    type master;
    file "hccos.cn.zone";
    allow-transfer { 172.16.0.82; };
    notify yes;
    also-notify { 172.16.0.82; };
};

zone "0.16.172.in-addr.arpa" IN {
    type master;
    file "0.16.172.in-addr.arpa.zone";
    allow-transfer { 172.16.0.82; };
    notify yes;
    also-notify { 172.16.0.82; };
};

在主节点上配置正向解析文件/var/named/hccos.cn.zone

$TTL 3600
$ORIGIN hccos.cn.
@        IN    SOA    hctjosinfra01.hccos.cn.    hctjosinfra01.hccos.cn.    (
    2018010301  ; serial
    2H      ; refresh
    10M         ; retry
    1W      ; expire
    1D      ; negative answer ttl
)
;ns server
            IN    NS    hctjosinfra01
            IN    NS    hctjosinfra02
;docker+k8s
hctjosinfra01        IN    A    172.16.0.81
hctjosinfra02        IN    A    172.16.0.82
hctjosetcd01        IN    A    172.16.0.83
hctjosetcd02        IN    A    172.16.0.84
hctjosetcd03        IN    A    172.16.0.85
hctjcephmon01        IN    A    172.16.0.86
hctjcephmon02        IN    A    172.16.0.87
hctjcephmon03        IN    A    172.16.0.88
hctjcephadm01        IN    A    172.16.0.89
hctjosk8smaster01    IN    A    172.16.0.90
hctjosk8sslave01    IN    A    172.16.0.91
hctjosk8sslave02    IN    A    172.16.0.92
hctjcephblock01        IN    A    172.16.0.93
hctjcephblock02        IN    A    172.16.0.94
hctjosk8snode01        IN    A    172.16.0.95
hctjosk8snode02        IN    A    172.16.0.96
hctjosk8snode03        IN    A    172.16.0.97
hctjosk8snode04        IN    A    172.16.0.98
;openstack
hctjosmysql01        IN    A    172.16.0.25
hctjosmysql02        IN    A    172.16.0.26
hctjosmysql03        IN    A    172.16.0.27
hctjoscache01        IN    A    172.16.0.45
hctjoscache02        IN    A    172.16.0.46
hctjoscache03        IN    A    172.16.0.47
hctjosdr01        IN    A    172.16.0.48
hctjosdr02        IN    A    172.16.0.49

在主节点上配置反向解析文件/var/named/0.16.172.in-addr.arpa.zone

$TTL 3600
$ORIGIN 0.16.172.in-addr.arpa.
@    IN    SOA    hctjosinfra01.hccos.cn.    hctjosinfra01.hccos.cn. (
    20180103
    1H
    10M
    3D
    12H
)
    IN    NS    hctjosinfra01.hccos.cn.
    IN    NS    hctjosinfra02.hccos.cn.
;docker+k8s
81    IN    PTR    hctjosinfra01.hccos.cn.
82    IN    PTR    hctjosinfra02.hccos.cn.
83    IN    PTR    hctjosetcd01.hccos.cn.
84    IN    PTR    hctjosetcd02.hccos.cn.
85    IN    PTR    hctjosetcd03.hccos.cn.
86    IN    PTR    hctjcephmon01.hccos.cn.
87    IN    PTR    hctjcephmon02.hccos.cn.
88    IN    PTR    hctjcephmon03.hccos.cn.
89    IN    PTR    hctjcephadm01.hccos.cn.
90    IN    PTR    hctjosk8smaster01.hccos.cn.
91    IN    PTR    hctjosk8sslave01.hccos.cn.
92    IN    PTR    hctjosk8sslave02.hccos.cn.
93    IN    PTR    hctjcephblock01.hccos.cn.
94    IN    PTR    hctjcephblock02.hccos.cn.
95    IN    PTR    hctjosk8snode01.hccos.cn.
96    IN    PTR    hctjosk8snode02.hccos.cn.
97    IN    PTR    hctjosk8snode03.hccos.cn.
98    IN    PTR    hctjosk8snode04.hccos.cn.
;openstack
25    IN    PTR    hctjosmysql01.hccos.cn.
26    IN    PTR    hctjosmysql02.hccos.cn.
27    IN    PTR    hctjosmysql03.hccos.cn.
45    IN    PTR    hctjoscache01.hccos.cn.
46    IN    PTR    hctjoscache02.hccos.cn.
47    IN    PTR    hctjoscache03.hccos.cn.
48    IN    PTR    hctjosdr01.hccos.cn.
49    IN    PTR    hctjosdr02.hccos.cn.

3.4. 在slave节点上配置/etc/named.conf

options {
    listen-on port 53 { 172.16.0.82; };
    listen-on-v6 port 53 { ::1; };
    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";
    //allow-query     { localhost; };

    /* 
     - If you are building an AUTHORITATIVE DNS server, do NOT enable recursion.
     - If you are building a RECURSIVE (caching) DNS server, you need to enable 
       recursion. 
     - If your recursive DNS server has a public IP address, you MUST enable access 
       control to limit queries to your legitimate users. Failing to do so will
       cause your server to become part of large scale DNS amplification 
       attacks. Implementing BCP38 within your network would greatly
       reduce such attack surface 
    */
    recursion yes;

    //dnssec-enable yes;
    //dnssec-validation yes;

    /* Path to ISC DLV key */
    bindkeys-file "/etc/named.iscdlv.key";

    managed-keys-directory "/var/named/dynamic";

    pid-file "/run/named/named.pid";
    session-keyfile "/run/named/session.key";
};

logging {
        channel default_debug {
                file "/var/log/named/default.log";
                severity dynamic;
        };
    channel query_logs {
        file "/var/log/named/bind.log";
        severity info;
        print-severity yes;
        print-time yes;
        print-category yes;
    };

};

zone "." IN {
    type hint;
    file "named.ca";
};

include "/etc/named.rfc1912.zones";
include "/etc/named.root.key";

zone "hccos.cn" IN {
    type slave;
    file "slaves/hccos.cn.zone";
    masters { 172.16.0.81; };
};

zone "0.16.172.in-addr.arpa" IN {
    type slave;
    file "slaves/0.16.172.in-addr.arpa.zone";
    masters { 172.16.0.81; };
};