ubuntu server修改hostname(terminal)

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ubuntu server修改hostname(terminal)

查看hostname命令

1. hostnamectl

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output

1.    Static hostname: pyserver
   
2.          Icon name: computer-vm
   
3.            Chassis: vm
   
4.         Machine ID: 0d172244wer234342552229a5aabf0ba15
   
5.            Boot ID: bdf1a662353f24ff2409ba717256fd0ec15
   
6.     Virtualization: microsoft
   
7.   Operating System: Ubuntu 20.04.1 LTS
   
8.             Kernel: Linux 5.4.0-42-generic
   
9.       Architecture: x86-64

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改hostname

1. sudo hostnamectl set-hostname new_name

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除了修改这个外还要改

1. sudo nano /etc/hosts

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output

1. 127.0.0.1   localhost
   
2. 127.0.0.1   DR  <------change this
   
3. 
   
4. # The following lines are desirable for IPv6 capable hosts
   
5. ::1     localhost ip6-localhost ip6-loopback
   
6. ff02::1 ip6-allnodes
   
7. ff02::2 ip6-allrouters

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接下来

1. sudo vim /etc/cloud/cloud.cfg

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preserve_hostname: false改成true

重启生效