Oracle
发布时间：2022-05-17 发布网站：大佬教程 code.js-code.com
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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)
@H_626_2
@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".
# 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". #
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