综合云平台

DNS 部署:

主机: 192.168.1.200

系统: CentOS 7.4

CPU: 1 vCPU

Memory: 2 G

1. 安装需要的包:

$ yum -y install bind bind-utils

2. 修改配置文件:

# 仅贴出了修改的部分

$ cat /etc/named.conf
options {
    listen-on port 53 { any; };
    ......
    allow-query     { any; };
    forwarders      { 114.114.114.114; };
    ......
};
zone "joshua.com" IN {
        type master;
        file "named.joshua.com";
};

3. 添加解析文件, 短域名(dns. / gluster1. / node1.)之类的仅为了操作方便, 实际环境可以不写这些条目

$ cat /var/named/named.joshua.com
$TTL 1D
@       IN SOA  @ joshua.com. (
                                        0       ; serial
                                        1D      ; refresh
                                        1H      ; retry
                                        1W      ; expire
                                        3H )    ; minimum
                        NS      dns.joshua.com.
dns.joshua.com.         A       192.168.1.200
dns.                    CNAME   dns.joshua.com.
;GlusterFS
gluster1.joshua.com.    A       192.168.1.201
gluster1.               CNAME   gluster1.joshua.com.
gluster2.joshua.com.    A       192.168.1.202
gluster2.               CNAME   gluster2.joshua.com.
gluster3.joshua.com.    A       192.168.1.203
gluster3.               CNAME   gluster3.joshua.com.
;oVirt
ovirt.joshua.com.       A       192.168.1.50
ovirt.                  CNAME   ovirt.joshua.com.
host1.ovirt.joshua.com. A       192.168.1.51
host1.                  CNAME   host1.ovirt.joshua.com.
host2.ovirt.joshua.com. A       192.168.1.52
host2.                  CNAME   host2.ovirt.joshua.com.
;OpenShift
openshift.joshua.com.           A       192.168.1.150
openshift.                      CNAME   openshift.joshua.com.
master1.openshift.joshua.com.   A       192.168.1.151
master1.                        CNAME   master1.openshift.joshua.com.
master2.openshift.joshua.com.   A       192.168.1.152
master2.                        CNAME   master2.openshift.joshua.com.
master3.openshift.joshua.com.   A       192.168.1.153
master3.                        CNAME   master3.openshift.joshua.com.
etcd1.openshift.joshua.com.     A       192.168.1.154
etcd1.                          CNAME   etcd1.openshift.joshua.com.
etcd2.openshift.joshua.com.     A       192.168.1.155
etcd2.                          CNAME   etcd2.openshift.joshua.com.
etcd3.openshift.joshua.com.     A       192.168.1.156
etcd3.                          CNAME   etcd3.openshift.joshua.com.
node1.openshift.joshua.com.     A       192.168.1.157
node1.                          CNAME   node1.openshift.joshua.com.
node2.openshift.joshua.com.     A       192.168.1.158
node2.                          CNAME   node2.openshift.joshua.com.
node3.openshift.joshua.com.     A       192.168.1.159
node3.                          CNAME   node3.openshift.joshua.com.
node4.openshift.joshua.com.     A       192.168.1.160
node4.                          CNAME   node4.openshift.joshua.com.
;OpenStack
openstack.joshua.com.   A       192.168.1.100

4. 启动服务, 同时防火墙开通策略

$ systemctl enable named
$ systemctl start named
$ firewall-cmd --permanent --add-service=dns
$ firewall-cmd --reload

5. 最后可以测试一下, 也是为什么会装 bind-utils 这个包, 因为这个包带了一些 DNS 测试工具

$ dig @localhost gluster1.joshua.com

; <<>> DiG 9.9.4-RedHat-9.9.4-51.el7 <<>> @localhost gluster1.joshua.com
; (2 servers found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 53161
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 2

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;gluster1.joshua.com.           IN      A

;; ANSWER SECTION:
gluster1.joshua.com.    86400   IN      A       192.168.1.201

;; AUTHORITY SECTION:
joshua.com.             86400   IN      NS      dns.joshua.com.

;; ADDITIONAL SECTION:
dns.joshua.com.         86400   IN      A       192.168.1.99

;; Query time: 1 msec
;; SERVER: ::1#53(::1)
;; WHEN: Mon Dec 04 13:37:54 CST 2017
;; MSG SIZE  rcvd: 98