BIND（Berkeley Internet Name Domain）作为一款目前市面是最主流的开源DNS软件，占据了市面上DNS服务器软件的九成，目前由 互联网系统协会 (Internet Systems Consortium) 负责开发和维护。目前，最新的稳定版BIND已经更新到了 BIND 9 版本。
DNS ZONE
DNS Zone，DNS区域是构成DNS命名空间的一部分，可以对权威性域名服务器等DNS组件更加精细的控制。 域名空间是一个分层树，其中DNS的根域位于顶部，DNS区域始于该树中的一个域，并且可以扩展到下边的子域。
# 下载DNS压力测试工具 wget https://ftp.isc.org/isc/bind9/9.12.4/bind-9.12.4.tar.gz tar zaxf bind-9.12.4.tar.gz cd bind-9.12.4/contrib/queryperf/ ./configure make chmod +x queryperf cp queryperf /usr/local/bin/ # 使用帮助 [root@infra ~]# queryperf -h
DNS Query Performance Testing Tool Version: $Id: queryperf.c,v 1.12 2007/09/05 07:36:04 marka Exp $
Usage: queryperf [-d datafile] [-s server_addr] [-p port] [-q num_queries] [-b bufsize] [-t timeout] [-n] [-l limit] [-f family] [-1] [-i interval] [-r arraysize] [-u unit] [-H histfile] [-T qps] [-e] [-D] [-R] [-c] [-v] [-h] -d specifies the input data file (default: stdin) -s sets the server to query (default: 127.0.0.1) -p sets the port on which to query the server (default: 53) -q specifies the maximum number of queries outstanding (default: 20) -t specifies the timeout for query completion in seconds (default: 5) -n causes configuration changes to be ignored -l specifies how a limit for how long to run tests in seconds (no default) -1 run through input only once (default: multiple iff limit given) -b set input/output buffer size in kilobytes (default: 32 k) -i specifies interval of intermediate outputs in seconds (default: 0=none) -f specify address family of DNS transport, inet or inet6 (default: any) -r set RTT statistics array size (default: 50000) -u set RTT statistics time unit in usec (default: 100) -H specifies RTT histogram data file (default: none) -T specify the target qps (default: 0=unspecified) -e enable EDNS 0 -D set the DNSSEC OK bit (implies EDNS) -R disable recursion -c print the number of packets with each rcode -v verbose: report the RCODE of each response on stdout -h print this usage # 创建测试文件，生成5000个域名解析请求 [root@infra ~]# cat touchdnstest.sh #!/bin/sh var=1 while [ $var -le 5000 ] do cat>>test<<EOF git.contoso.com A EOF
