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标题: top查看，发现大部分时间mysql 97%，主备两台DNS服务器同时这样，这样DNS就无法解析了 [打印本页]

作者: soeken 时间: 2017-06-14 10:49
标题: top查看，发现大部分时间mysql 97%，主备两台DNS服务器同时这样，这样DNS就无法解析了
环境：centos6.5+bind-9.9.2-P2+mysql
top查看，发现大部分时间mysql 97%，主备两台DNS服务器同时这样，这样DNS就无法解析了。请教大家帮忙分析原因，，谢谢
------------------------------
  PID USER    PR  NI  VIRT  RES  SHR S %CPU %MEM TIME+  COMMAND
2548 mysql    20 0  136m  14m 3984 S 97.1  0.1 2408:31 mysqld
2707 root    20 0 14028 6520 2856 S  3.3  0.0  83:43.70 named

测试启动bind
/usr/local/named/sbin/named -gc /usr/local/named/etc/named.conf
发现主要以下几种记录，每次出现都是大量的几十个几百（为了隐私，这里对应域名替换成aaaa\bbbb了）

1、--------------------------不固定哪个域名
12-Jun-2017 09:08:13.373 dns_rdata_fromtext: buffer-0xbfa48008:1: near 'www.aaaaa.cn.': extra input text
12-Jun-2017 09:08:13.373 dns_sdlz_putrr returned error. Error code was: extra input text

2、---------------------------IP地址好多
12-Jun-2017 09:28:40.659 client 183.232.120.28#41661 (bbbbbb.com): query (cache) 'bbbbbb.com/AAAA/IN' denied
12-Jun-2017 09:28:40.841 client 183.232.120.28#28072 (bbbbbb.com): query (cache) 'bbbbbb.com/AAAA/IN' denied
12-Jun-2017 09:28:41.422 client 183.232.120.28#19910 (bbbbbb.com): query (cache) 'bbbbbb.com/AAAA/IN' denied
12-Jun-2017 09:28:41.428 client 183.232.120.28#14936 (bbbbbb.com): query (cache) 'bbbbbb.com/A/IN' denied
12-Jun-2017 09:28:41.587 client 117.144.243.119#47870 (bbbbbb.com): query (cache) 'bbbbbb.com/AAAA/IN' denied
12-Jun-2017 09:28:41.615 client 183.232.126.140#24568 (bbbbbb.com): query (cache) 'bbbbbb.com/AAAA/IN' denied

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