k8s 集群环境之bind 9
1.开始安装11主机bind 9
安装必要软件 #yum -y install wget net-tools telnet tree nmap sysstat lrzsz dos2unix bind-utils -y [root@hdss7-11 ~]# yum install -y bind 配置bind [root@hdss7-11 ~]# vi /etc/named.conf # BIND进程的工作属性，区域的定义 13 listen-on port 53 { 192.168.154.11; }; # 监听本机IP 14 listen-on-v6 port 53 { ::1; }; # 删除，不监听IPV6 20 allow-query { any; }; # 允许所有主机查看 21 forwarders { 192.168.154.2; }; # 办公网上一级的DNS,（生产写运营商dns） 33 recursion yes; # dns采用递归的查询 35 dnssec-enable no; # 关闭，节省资源（生产可能不需要关闭） 36 dnssec-validation no; # 关闭，节省资源，不做互联网认证 检查配置 [root@hdss7-11 ~]# named-checkconf [root@hdss7-11 ~]# echo $? 配置区域配置文件在文件末尾添加 [root@hdss7-11 ~]# vim /etc/named.rfc1912.zones zone "host.com" IN { type master; file "host.com.zone"; allow-update { 192.168.12.11; }; }; zone "od.com" IN { type master; file "od.com.zone"; allow-update { 192.168.12.11; }; }; 配置区域数据文件 [root@hdss7-11 ~]# vi /var/named/host.com.zone [root@hdss7-11 ~]# cat /var/named/host.com.zone $ORIGIN host.com. $TTL 600 ; 10 minutes @ IN SOA dns.host.com. dnsadmin.host.com. ( 20200606 ; serial 10800 ; refresh (3 hours) 900 ; retry (15 minutes) 604800 ; expire (1 week) 86400 ; minimum (1 day) ) NS dns.host.com. $TTL 60 ; 1 minute dns A 192.168.12.11 HDSS7-11 A 192.168.12.11 HDSS7-12 A 192.168.12.12 HDSS7-21 A 192.168.12.21 HDSS7-22 A 192.168.12.22 HDSS7-200 A 192.168.12.200 [root@hdss7-11 ~]# cat /var/named/od.com.zone $ORIGIN od.com. $TTL 600 ; 10 minutes @ IN SOA dns.od.com. dnsadmin.od.com. ( 20200606 ; serial 10800 ; refresh (3 hours) 900 ; retry (15 minutes) 604800 ; expire (1 week) 86400 ; minimum (1 day) ) NS dns.od.com. $TTL 60 ; 1 minute dns A 192.168.12.11 检测区域数据文件 [root@hdss7-11 ~]# named-checkconf [root@hdss7-11 ~]# named-checkzone "host.com" /var/named/host.com.zone zone host.com/IN: loaded serial 20200606 OK [root@hdss7-11 ~]# named-checkzone "od.com" /var/named/od.com.zone zone od.com/IN: loaded serial 20200606 OK 更改文件的属组权限 [root@hdss7-11 ~]# chown root:named /var/named/host.com.zone [root@hdss7-11 ~]# chown root:named /var/named/od.com.zone [root@hdss7-11 ~]# chmod 640 /var/named/host.com.zone [root@hdss7-11 ~]# chmod 640 /var/named/od.com.zone [root@hdss7-11 ~]# systemctl restart named [root@hdss7-11 ~]# systemctl enable named Created symlink from /etc/systemd/system/multi-user.target.wants/named.service to /usr/lib/systemd/system/named.service. [root@hdss7-11 ~]# netstat -lntup|grep 53 tcp 0 0 192.168.12.11:53 0.0.0.0:* LISTEN 1752/named tcp 0 0 127.0.0.1:953 0.0.0.0:* LISTEN 1752/named tcp6 0 0 ::1:953 :::* LISTEN 1752/named udp 0 0 192.168.12.11:53 0.0.0.0:* 1752/named 验证解析 [root@hdss7-11 ~]# dig -t A hdss7-21.host.com @192.168.12.11 +short 192.168.12.21 [root@hdss7-11 ~]# dig -t A hdss7-200.host.com @192.168.12.11 +short 192.168.12.200
2 其他节点DNS指向11
11修改dns [root@hdss7-11 ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0 TYPE=Ethernet BOOTPROTO=none HWRADD=00:0c:29:c7:cd:40 NAME=eth0 DEVICE=eth0 ONBOOT=yes IPADDR=192.168.12.11 GATEWAY=192.168.12.1 DNS1=192.168.12.11 [root@hdss7-11 ~]# /etc/init.d/network restart Restarting network (via systemctl): [ OK ] [root@hdss7-11 ~]# ping baidu.com PING baidu.com (39.156.69.79) 56(84) bytes of data. 64 bytes from 39.156.69.79 (39.156.69.79): icmp_seq=1 ttl=128 time=202 ms [root@hdss7-11 ~]# cat /etc/resolv.conf # Generated by NetworkManager search host.com nameserver 192.168.12.11 12指定DNS [root@hdss7-12 ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth0 DNS=192.168.12.11 [root@hdss7-12 ~]# /etc/init.d/network restart [root@hdss7-12 ~]# curl -I www.baidu.com HTTP/1.1 200 OK [root@hdss7-12 ~]# cat /etc/resolv.conf # Generated by NetworkManager search host.com nameserver 192.168.12.11 21指定dns [root@hdss7-21 ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth0 DNS=192.168.12.11 [root@hdss7-21 ~]# /etc/init.d/network restart Restarting network (via systemctl): [ OK ] [root@hdss7-21 ~]# cat /etc/resolv.conf # Generated by NetworkManager search host.com nameserver 192.168.12.11 [root@hdss7-21 ~]# curl -i baidu.com HTTP/1.1 200 OK 22指定dns [root@hdss7-22 ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth0 DNS=192.168.12.11 [root@hdss7-22 ~]# /etc/init.d/network restart Restarting network (via systemctl): [ OK ] [root@hdss7-22 ~]# curl -i baidu.com HTTP/1.1 200 OK [root@hdss7-22 ~]# cat /etc/resolv.conf # Generated by NetworkManager search host.com nameserver 192.168.12.11 200指定dns [root@hdss7-200 ~]# vi /etc/sysconfig/network-scripts/ifcfg-eth0 DNS=192.168.12.11 [root@hdss7-200 ~]# /etc/init.d/network restart Restarting network (via systemctl): [ OK ] [root@hdss7-200 ~]# cat /etc/resolv.conf # Generated by NetworkManager search host.com nameserver 192.168.12.11 [root@hdss7-200 ~]# curl -i www.baidu.com HTTP/1.1 200 OK windows 10 将本机的网卡DNS也改成192.168.12.11 IPV4 -- 高级 -- 越点改成20 [c:\~]$ ping hdss7-200.host.com 正在 Ping HDSS7-200.host.com [192.168.12.200] 具有 32 字节的数据: 来自 192.168.12.200 的回复: 字节=32 时间<1ms TTL=64 mac 偏好设置---网络---高级---DNS--dns为192.168.12.11 搜索域为od.com
