Configure the DNS service in Liunx and the DNS service in Liunx

Configure the DNS service in Liunx and the DNS service in Liunx

When you Ping the host name, you can map the IP address of the host, and vice versa. Configure and specify the DNS server to quickly deploy the cluster. You do not need to modify the HOSTS file on each host to resolve the IP address and host name. In Linux, DNS is implemented using bind.

• Environment:

Machine IP machine name usage

10.190.60.5 hadoop01.ftgov-DNS host

10.190.60.6 hadoop02.ftgov-DNS Client

10.190.60.7 hadoop03.ftgov-DNS Client

 

Procedure

• Install bind

Command: yum-y install bind-utils bind-chroot

• Modify/etc/named. conf access permission

Command: vim/etc/named. conf

• Modify the/etc/named. rfc1912.zones file and add the forward and reverse resolution configurations.

Command: vim/etc/named. rfc1912.zones

Resolution:

Zone "ftgov" IN {// parse when the input is similar to the "ftgov" suffix, for example, hadoop01.ftgov

Type master; // This is a dns host

File "named.ftgov.com"; // The resolution file will read the domain name and IP ing configuration of the named.ftgov.com file in the/var/named directory (the file will be generated later)

Allow-update {none ;};

};

Zone "60.190.10.in-addr. arpa" IN {// reverse resolution when the input is similar to "10.190.60.xxx". Pay attention to the address order.

Type master;

File "named.10.190.60.zone"; // The Reverse file is located in the configuration of named.10.190.60.zone in the/var/named directory (the file will be generated later)

Allow-update {none ;};

};

• Generate the forward and reverse file required for the above Configuration
  • Open the directory cd/var/named
  • Generate file named.ftgov.com

• Configure named.ftgov.com

• Generate file named.10.190.60.zone

• Configuration

• Configure other DNS clients

1. First Use ifconfig to check which Nic is used by the current client, such as my host: eth1 Nic

2. Modify the file

Vim/etc/sysconfig/network-scripts/ifcfg-eth1 // change to the name of the NIC you are currently using

Add the IP address of the DNS host to the last line.

3. Restart the client NETWORK SERVICE

Command: service network restart

4. perform the same operations on other clients.

• Start the DNS server

Start command: service named start

Check whether the service is normal: tail-n 30/var/log/messages | grep named

• Test DNS Service

Positive Solution:

Reverse Solution:

Done.