本篇文章给大家分享的是有关如何理解Oracle Linux中的machine-id,小编觉得挺实用的,因此分享给大家学习,希望大家阅读完这篇文章后可以有所收获,话不多说,跟着小编一起来看看吧。
Oracle Linux7machine-id
machine-id的介绍:
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The "machine-id" parameter is added from Oracle Linux 7.1 to identify the machine in the network. Therefor this parameter must be unique.
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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".
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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".
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The "machine-id" value is written in "/etc/machine-id".
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User have to clear the original value of "machine-id" befor changing.
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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.
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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".
#
以上就是如何理解Oracle Linux中的machine-id,小编相信有部分知识点可能是我们日常工作会见到或用到的。希望你能通过这篇文章学到更多知识。更多详情敬请关注亿速云行业资讯频道。
原创文章,作者:奋斗,如若转载,请注明出处:https://blog.ytso.com/200133.html