powerDNS服務器搭建
1、演示環境
3臺centos7 x86_64 最小化安裝系統html
pdnsserver 192.168.0.22 (DNS server服務器） node01 192.168.0.11 node02 192.168.0.18
2、powerdns 安裝
192.168.0.22 服務器上安裝pdns_servernode
搜索軟件安裝包是否支持安裝
yum search pdns-backend-mysql.x86_64mysql
要是沒搜索到可使用的安裝軟件的話，更換下下yum原便可以 git
yum list | grep epel-release
yum install -y epel-release
cd /etc/yum.repos.d
比原來的安裝源，多個2個文件epel.repo epel-testing.repogithub
使用阿里開源鏡像提供的epel源
#下載阿里開源鏡像的epel源文件redis
wget -O /etc/yum.repos.d/epel-7.repo http://mirrors.aliyun.com/repo/epel-7.repo sql
比原來的安裝源，多個3個文件epel.repo epel-testing.repo epel-7.repo
清除系統yum緩存，並從新生成新的yum緩存
yum makecache
##查看系統可用的yum源和全部的yum源
yum repolist enabled
yum repolist all數據庫
從新安裝
yum install pdns-backend-mysql.x86_64
安裝成功
[root@pdnsserver yum.repos.d]# which pdns_server
/usr/sbin/pdns_servercentos
下載powerdns MySQL數據庫的表結構：緩存
curl https://raw.githubusercontent.com/PowerDNS/pdns/rel/auth-4.1.x/modules/gmysqlbackend/schema.mysql.sql -o powerdns.sql
登陸本機pdns_server MySQL而後建立pdns庫，而且受權給192.168.0.22
grant all on pdns.* to dnsuser@'1192.168.0.22' identified by '654321';flush privileges;
create database pdns;use pdns;
source /root/powerdns.sql;
use pdns;
INSERT INTO domains (name, type) values ('testdns01.com', 'NATIVE');
INSERT INTO records (domain_id, name, content, type,ttl,prio) VALUES (1,'testdns01.com','localhost.dnstest.net 1','SOA',86400,NULL);
INSERT INTO records (domain_id, name, content, type,ttl,prio) VALUES (1,'@','f1g1ns1.dnspod.net','NS',86400,NULL);
INSERT INTO records (domain_id, name, content, type,ttl,prio) VALUES (1,'@','f1g1ns2.dnspod.net','NS',86400,NULL);
INSERT INTO records (domain_id, name, content, type,ttl,prio) VALUES (1,'r.testdns01.com','192.168.0.18','A',120,NULL);
INSERT INTO records (domain_id, name, content, type,ttl,prio) VALUES (1,'w.testdns01.com','192.168.0.11','A',120,NULL);
root@pdns_server [pdns]>select * from records;
+----+-----------+-----------------+------+-------------------------+-------+------+-------------+----------+-----------+------+
| id | domain_id | name | type | content | ttl | prio | change_date | disabled | ordername | auth |
+----+-----------+-----------------+------+-------------------------+-------+------+-------------+----------+-----------+------+
| 8 | 1 | testdns01.com | SOA | localhost.dnstest.net 1 | 86400 | NULL | NULL | 0 | NULL | 1 |
| 9 | 1 | @ | NS | f1g1ns1.dnspod.net | 86400 | NULL | NULL | 0 | NULL | 1 |
| 10 | 1 | @ | NS | f1g1ns2.dnspod.net | 86400 | NULL | NULL | 0 | NULL | 1 |
| 11 | 1 | r.testdns01.com | A | 192.168.0.18 | 120 | NULL | NULL | 0 | NULL | 1 |
| 12 | 1 | w.testdns01.com | A | 192.168.0.11 | 120 | NULL | NULL | 0 | NULL | 1 |
+----+-----------+-----------------+------+-------------------------+-------+------+-------------+----------+-----------+------+
在pdn_server的配置文件pdns.conf 開頭添加剛纔建立的連接pdns庫的帳戶信息：
[root@pdnsserver ~]# head -10 /etc/pdns/pdns.conf launch=gmysql gmysql-host=192.168.0.22 gmysql-user=dnsuser gmysql-dbname=pdns gmysql-password=654321
提示要把默認的#launch=bind 參數註釋掉，而後再添加launch=gmysql 不然啓動pdns服務會報錯
啓動pdns_server:
[root@pdnsserver pdns]# /usr/sbin/pdns_server --daemon=no --guardian=no --loglevel=9 Jun 26 16:11:20 Reading random entropy from '/dev/urandom' Jun 26 16:11:20 Loading '/usr/lib64/pdns/libgmysqlbackend.so' Jun 26 16:11:20 [gmysqlbackend] This is the gmysql backend version 4.1.8 reporting Jun 26 16:11:20 This is a standalone pdns Jun 26 16:11:20 Listening on controlsocket in '/var/run/pdns.controlsocket' Jun 26 16:11:20 UDP server bound to 0.0.0.0:53 Jun 26 16:11:20 UDPv6 server bound to [::]:53 Jun 26 16:11:20 TCP server bound to 0.0.0.0:53 Jun 26 16:11:20 TCPv6 server bound to [::]:53 Jun 26 16:11:20 PowerDNS Authoritative Server 4.1.8 (C) 2001-2018 PowerDNS.COM BV Jun 26 16:11:20 Using 64-bits mode. Built using gcc 4.8.5 20150623 (Red Hat 4.8.5-36). Jun 26 16:11:20 PowerDNS comes with ABSOLUTELY NO WARRANTY. This is free software, and you are welcome to redistribute it according to the terms of the GPL version 2. Jun 26 16:11:20 Set effective group id to 993 Jun 26 16:11:20 Set effective user id to 995 Jun 26 16:11:20 Creating backend connection for TCP Jun 26 16:11:20 gmysql Connection successful. Connected to database 'pdns' on '192.168.0.11'. Jun 26 16:11:20 About to create 3 backend threads for UDP Jun 26 16:11:20 gmysql Connection successful. Connected to database 'pdns' on '192.168.0.11'. Jun 26 16:11:20 gmysql Connection successful. Connected to database 'pdns' on '192.168.0.11'. Jun 26 16:11:21 gmysql Connection successful. Connected to database 'pdns' on '192.168.0.11'. Jun 26 16:11:21 Done launching threads, ready to distribute questions
查看pdnsserver的通訊端口：
[root@pdnsserver ~]# ss -lntup|grep 53
udp UNCONN 0 0 *:53 *:* users:(("pdns_server",pid=16080,fd=6))
udp UNCONN 0 0 :::53 :::* users:(("pdns_server",pid=16080,fd=7))
tcp LISTEN 0 128 *:53 *:* users:(("pdns_server",pid=16080,fd=8))
tcp LISTEN 0 128 :::53 :::* users:(("pdns_server",pid=16080,fd=9))
提示pdns_server是採用tcp和udp協議的53端口進行通訊的,要在防火牆iptables中放開53端口
[root@pdnsserver ~]# grep 53 /etc/sysconfig/iptables -A INPUT -p tcp -m tcp --dport 53 -j ACCEPT -A INPUT -p udp -m udp --dport 53 -j ACCEPT [root@pdnsserver ~]# systemctl restart iptables
到此處pdn_server安裝啓動完成。
pdns_server相關的詳細參數能夠自行網上查找下，仍是有不少說明介紹的，此處再也不贅述
3、實例驗證
在192.168.0.11機器添加dns 服務地址192.168.0.22
[root@node01 ~]# cat /etc/resolv.conf nameserver 192.168.0.22 nameserver 221.228.255.1
ping測試：
[root@node01 ~]# ping w.testdns01.com PING w.testdns01.com (192.168.0.11) 56(84) bytes of data. 64 bytes from 192.168.0.11: icmp_seq=1 ttl=64 time=0.239 ms 64 bytes from 192.168.0.11: icmp_seq=2 ttl=64 time=0.223 ms ^C --- w.testdns01.com ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 1000ms rtt min/avg/max/mdev = 0.223/0.231/0.239/0.008 ms [root@node01 ~]# ping r.testdns01.com PING r.testdns01.com (192.168.0.18) 56(84) bytes of data. 64 bytes from 192.168.0.18: icmp_seq=1 ttl=64 time=0.024 ms 64 bytes from 192.168.0.18: icmp_seq=2 ttl=64 time=0.030 ms ^C --- r.testdns01.com ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 1000ms rtt min/avg/max/mdev = 0.024/0.027/0.030/0.003 ms [root@node01 ~]#
dig測試：
安裝dig命令
yum -y install bind-utils
[root@node01 ~]# dig +trace r.testdns01.com ; <<>> DiG 9.9.4-RedHat-9.9.4-74.el7_6.1 <<>> +trace r.testdns01.com ;; global options: +cmd ;; Received 28 bytes from 192.168.0.22#53(192.168.0.22) in 0 ms [root@node01 ~]# dig +trace w.testdns01.com ; <<>> DiG 9.9.4-RedHat-9.9.4-74.el7_6.1 <<>> +trace w.testdns01.com ;; global options: +cmd ;; Received 28 bytes from 192.168.0.22#53(192.168.0.22) in 0 ms
[root@node01 ~]# dig w.testdns01.com SOA ; <<>> DiG 9.9.4-RedHat-9.9.4-74.el7_6.1 <<>> w.testdns01.com SOA ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 21294 ;; flags: qr aa rd; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 1680 ;; QUESTION SECTION: ;w.testdns01.com. IN SOA ;; AUTHORITY SECTION: testdns01.com. 3600 IN SOA node01.dnstest.net. 1. 0 10800 3600 604800 3600 ;; Query time: 0 msec ;; SERVER: 192.168.0.22#53(192.168.0.22) ;; WHEN: 六 6月 29 14:41:00 CST 2019 ;; MSG SIZE rcvd: 102
[root@node01 ~]# dig w.testdns01.com ; <<>> DiG 9.9.4-RedHat-9.9.4-74.el7_6.1 <<>> w.testdns01.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 44913 ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 1680 ;; QUESTION SECTION: ;w.testdns01.com. IN A ;; ANSWER SECTION: w.testdns01.com. 120 IN A 192.168.0.11 ;; Query time: 3 msec ;; SERVER: 192.168.0.22#53(192.168.0.22) ;; WHEN: 六 6月 29 14:43:19 CST 2019 ;; MSG SIZE rcvd: 60
[root@node01 ~]# dig r.testdns01.com ; <<>> DiG 9.9.4-RedHat-9.9.4-74.el7_6.1 <<>> r.testdns01.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 60953 ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 1680 ;; QUESTION SECTION: ;r.testdns01.com. IN A ;; ANSWER SECTION: r.testdns01.com. 120 IN A 192.168.0.18 ;; Query time: 2 msec ;; SERVER: 192.168.0.22#53(192.168.0.22) ;; WHEN: 六 6月 29 14:43:24 CST 2019 ;; MSG SIZE rcvd: 60 [root@node01 ~]#
192.168.0.18 機器上測試：
[root@node02 ~]# cat /etc/resolv.conf #Generated by NetworkManager nameserver 192.168.0.22
安裝dig命令：
yum -y install bind-utils
[root@node02 ~]# dig r.testdns01.com|grep r.testdns01.com ; <<>> DiG 9.9.4-RedHat-9.9.4-74.el7_6.1 <<>> r.testdns01.com ;r.testdns01.com. IN A r.testdns01.com. 120 IN A 192.168.0.18 [root@node02 ~]# [root@node02 ~]# dig w.testdns01.com|grep w.testdns01.com ; <<>> DiG 9.9.4-RedHat-9.9.4-74.el7_6.1 <<>> w.testdns01.com ;w.testdns01.com. IN A w.testdns01.com. 120 IN A 192.168.0.11 [root@node02 ~]# dig w.testdns01.com SOA|grep testdns01.com ; <<>> DiG 9.9.4-RedHat-9.9.4-74.el7_6.1 <<>> w.testdns01.com SOA ;w.testdns01.com. IN SOA testdns01.com. 3600 IN SOA localhost.dnstest.net. 1. 0 10800 3600 604800 3600 [root@node02 ~]# dig r.testdns01.com SOA|grep testdns01.com ; <<>> DiG 9.9.4-RedHat-9.9.4-74.el7_6.1 <<>> r.testdns01.com SOA ;r.testdns01.com. IN SOA testdns01.com. 3600 IN SOA localhost.dnstest.net. 1. 0 10800 3600 604800 3600 [root@node02 ~]#
後臺運行pdns_server服務：
[root@pdnsserver ~]# /usr/sbin/pdns_server --daemon=yes --guardian=no --loglevel=9 Jun 29 15:24:13 Reading random entropy from '/dev/urandom' Jun 29 15:24:13 Loading '/usr/lib64/pdns/libgmysqlbackend.so' Jun 29 15:24:13 [gmysqlbackend] This is the gmysql backend version 4.1.8 reporting
暫停pdnsserver中的r.testdns01.com A記錄解析：
root@pdnsserver [pdns]>select * from records; +----+-----------+-----------------+------+-------------------------+-------+------+-------------+----------+-----------+------+ | id | domain_id | name | type | content | ttl | prio | change_date | disabled | ordername | auth | +----+-----------+-----------------+------+-------------------------+-------+------+-------------+----------+-----------+------+ | 8 | 1 | testdns01.com | SOA | localhost.dnstest.net 1 | 86400 | NULL | NULL | 0 | NULL | 1 | | 9 | 1 | @ | NS | f1g1ns1.dnspod.net | 86400 | NULL | NULL | 0 | NULL | 1 | | 10 | 1 | @ | NS | f1g1ns2.dnspod.net | 86400 | NULL | NULL | 0 | NULL | 1 | | 11 | 1 | r.testdns01.com | A | 192.168.0.18 | 120 | NULL | NULL | 0 | NULL | 1 | | 12 | 1 | w.testdns01.com | A | 192.168.0.11 | 120 | NULL | NULL | 0 | NULL | 1 | +----+-----------+-----------------+------+-------------------------+-------+------+-------------+----------+-----------+------+ 5 rows in set (0.00 sec) root@pdnsserver [pdns]>update records set disabled=1 where name='r.testdns01.com'; Query OK, 1 row affected (0.01 sec) Rows matched: 1 Changed: 1 Warnings: 0 root@pdnsserver [pdns]> root@pdnsserver [pdns]>select * from records; +----+-----------+-----------------+------+-------------------------+-------+------+-------------+----------+-----------+------+ | id | domain_id | name | type | content | ttl | prio | change_date | disabled | ordername | auth | +----+-----------+-----------------+------+-------------------------+-------+------+-------------+----------+-----------+------+ | 8 | 1 | testdns01.com | SOA | localhost.dnstest.net 1 | 86400 | NULL | NULL | 0 | NULL | 1 | | 9 | 1 | @ | NS | f1g1ns1.dnspod.net | 86400 | NULL | NULL | 0 | NULL | 1 | | 10 | 1 | @ | NS | f1g1ns2.dnspod.net | 86400 | NULL | NULL | 0 | NULL | 1 | | 11 | 1 | r.testdns01.com | A | 192.168.0.18 | 120 | NULL | NULL | 1 | NULL | 1 | | 12 | 1 | w.testdns01.com | A | 192.168.0.11 | 120 | NULL | NULL | 0 | NULL | 1 | +----+-----------+-----------------+------+-------------------------+-------+------+-------------+----------+-----------+------+ 5 rows in set (0.00 sec)
測試：
[root@node01 ~]# ping r.testdns01.com ping: unknown host r.testdns01.com [root@@node01 ~]# ping w.testdns01.com PING w.testdns01.com (192.168.0.11) 56(84) bytes of data. 64 bytes from 192.168.0.11: icmp_seq=1 ttl=64 time=0.243 ms 64 bytes from 192.168.0.11: icmp_seq=2 ttl=64 time=0.232 ms ^C --- w.testdns01.com ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 999ms rtt min/avg/max/mdev = 0.232/0.237/0.243/0.016 ms [root@node02 ~]# ping r.testdns01.com ping: unknown host r.testdns01.com [root@kusou-es11 ~]# ping w.testdns01.com PING w.testdns01.com (192.168.0.11) 56(84) bytes of data. 64 bytes from 192.168.0.11: icmp_seq=1 ttl=64 time=0.024 ms ^C --- w.testdns01.com ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.024/0.024/0.024/0.000 ms [root@node02 ~]#
到此演示完成，說明這次試驗Powerdns服務搭建是成功的
powerDNS優化，壓測能夠參考下面的連接地址：
https://www.cnblogs.com/anpengapple/p/5211557.html
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