Install a virtual machine using the minimal image
Use the virtual machine as a template machine
Configure the template machine, and then clone based on the template machine
Template machine configuration
Configure hostname
vi/etc/sysconfig/network
Note : If the configuration is correct, the hostname is not displayed properly. It can be modified by the following command
# sysctlkernel.hostname=master
Configure the mapping relationship, you can add aliases
vi/etc/hosts
Suggestion: You can plan the cluster in advance, and add the IP and hostname of each node in hosts.
The plan is as follows:
configure ip address
vi/etc/sysconfig/network-scripts/ifcfg-eth0
Notice:
In the minimal version, the network card will start automatically without booting by default, you need to modify ONBOOT to yes
Modified ip configuration: delete mac address information
You can directly delete the mapping relationship configuration file to avoid the conflict of mac addresses.
# rm –rf /etc/udev/rules.d/70-persistent-net.rules
turn off firewall
set snapshot
Snapshots, equivalent to restore points, can be restored if some unrecoverable problems occur.
Right click - Snapshot - Take Snapshot
Supplement: In the production environment, there is no snapshot. It is necessary to back up important files, or write scripts, configure scheduled tasks, and perform a regular backup.
firewall
#View firewall status
serviceiptables status
#Open the firewall
serviceiptables start
#Turn off the firewall
serviceiptables stop
#Restart firewall
service iptables restart
or
Start: /etc/init.d/iptablesstart
shutdown: /etc/init.d/iptablesstop
Restart: /etc/init.d/iptables restart
#View firewall startup status
chkconfigiptables –list
#boot start
chkconfig iptables on
#Turn off the firewall to start
chkconfigiptables off
/sbin/chkconfig --level 2345 iptables off Turn off the automatic operation of the firewall
During the learning phase, it is recommended to turn off the firewall.
Think of this virtual machine as a template machine. Used to generate other machines quickly.
Clone a virtual machine
Use the clone method to quickly generate multiple nodes and form a cluster.
Shut down, right click - manage - clone
Clone source, optional current state or snapshot point.
Cloning is complete.
Right click - settings
Generate MAC address
If the mac address conflicts or is invalid
Solution 1 :
1. Directly delete the mac configuration information in /etc/sysconfig/network-scripts/ifcfg-eth0
2. Directly delete the file /etc/udev/rules.d/70-persistent-net.rules
3. Restart the system
Solution 2 :
1. Find the latest generated mac address
2. Modify the ip address configuration file to the generated mac address:
# vi /etc/sysconfig/network-scripts/ifcfg-eth0
3, vi /etc/udev/rules.d/70-persistent-net.rules modify the configuration file
4. Restart the system