• 博客访问: 18580
  • 博文数量: 25
  • 用 户 组: 普通用户
  • 注册时间: 2015-08-15 22:46
  • 认证徽章:
文章分类
文章存档

2017年(12)

2016年(13)

我的朋友

分类: Linux操作系统

2017-04-11 10:36:08

关于Oracle Linux中的machine-id

标签: Oracle Linux7machine-id
 104人阅读 评论(0) 收藏 举报
 分类:
OL7(47)  RHEL7(49) 
关于Oracle Linux中的machine-id
参考自:

How to Change the "machine-id" of Oracle Linux 7.1 and Later (Doc ID 2127429.1)


machine-id的介绍:

  • The "machine-id" parameter is added from Oracle Linux 7.1 to identify the machine in the network. Therefor this parameter must be unique.
  • But when user clone the virtual machine that is installed OL7.1, the cloned virtual machine's "machine-id" is not changed, and some virtual machine have the same "machine-id".
  • User should change the "machine-id" of the cloned virtual machine.

改变machine-id的方法:

To execute the below operations on the cloned virtual machine with the "root" account.

1. Clear the original "machine-id".

  • The "machine-id" value is written in "/etc/machine-id".
  • User have to clear the original value of "machine-id" befor changing.
  • There are some ways to change the "/etc/machine-id" file, in this case, use the "cp" command to change the original value.

Example :

# cat /etc/machine-id
e2bd0adf084a4c289cf335da4cd2f4b4 * Original "machine-id".
#
# cp -f /dev/null /etc/machine-id
cp: overwrite '/etc/machine-id'? * Clear original value.
#
# cat /etc/machine-id
# * Value has been cleared.

 

2. Create the new "machine-id" value.

  • generate a new machine-id by the "systemd-machine-id-setup" command and set up to the "/etc/machine-id".

Example :

# cat /etc/machine-id
# * "/etc/machine-id" is empty.
# systemd-machine-id-setup
Initializing machine ID from random generator. * Success to generate and setup the new value.
#
# cat /etc/machine-id
dab09965986b4ea1ba34dc7a79bb2830 * New value of "machine-id".
#
阅读(1225) | 评论(0) | 转发(0) |
给主人留下些什么吧!~~
评论热议
请登录后评论。

登录 注册