DirectAdmin安装后named无法启动，会出现如下问题，rndc无法找到key，named服务跑的是正常的，其实本也可以用，但是本着不能放过一个问题的原则，找到了解决办法

[root@server named]# /etc/init.d/named status
rndc: neither /etc/rndc.conf nor /etc/rndc.key was found
named (pid  4086) is running...
[root@server named]# rndc status
rndc: neither /etc/rndc.conf nor /etc/rndc.key was found

提示没有rndc.key，主要原因还是在RHEL6上没有caching-named这个包了，EL5上是把key包含在里面的。所以我们要手动创建key

1）创建key

[root@server named]# rndc-confgen -r /dev/urandom -a
wrote key file "/etc/rndc.key"

2）更改权限

[root@server named]# rndc status
rndc: connect failed: 127.0.0.1#953: connection refused
 
[root@server named]# cat /etc/rndc.key 
key "rndc-key" {
    algorithm hmac-md5;
    secret "MEARtiTMJzFfRwBKlY5lpQ==";
};
 
[root@server named]# ls -l /etc/rndc.key 
-rw------- 1 root root 77 May  1 06:57 /etc/rndc.key
 
[root@server named]# chown root:named /etc/rndc.key 
[root@server named]# chmod 644 /etc/rndc.key 
[root@server named]# rndc status
rndc: connect failed: 127.0.0.1#953: connection refused

重启named服务！

3）验证

[root@server named]# /etc/init.d/named restart
Stopping named: .                                          [  OK  ]
Starting named:                                            [  faild  ]

还是失败，发现named.conf 24行报错，

编辑/etc/named.conf，找到24行，发现这里名字不对

keys { rndckey; };

修改为

keys { rndc-key; };

[root@server named]# /etc/init.d/named restart
Stopping named: . [ OK ]
Starting named: [ OK ]

[root@server ~]# /etc/init.d/named status
version: 9.8.2rc1-RedHat-9.8.2-0.37.rc1.el6_7.4
CPUs found: 1
worker threads: 1
number of zones: 19
debug level: 0
xfers running: 0
xfers deferred: 0
soa queries in progress: 0
query logging is OFF
recursive clients: 0/0/1000
tcp clients: 0/100
server is up and running
named (pid  3200) is running...

[root@server named]# rndc status
version: 9.8.2rc1-RedHat-9.8.2-0.37.rc1.el6_7.4
CPUs found: 1
worker threads: 1
number of zones: 19
debug level: 0
xfers running: 0
xfers deferred: 0
soa queries in progress: 0
query logging is OFF
recursive clients: 0/0/1000
tcp clients: 0/100
server is up and running
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