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Re: How to regenerate ssh key by cloud-init ?

 

Sorry it's my fault. There are not many 'bootcmd` in cloud.cfg. I made a
mistake.

On Fri, Mar 4, 2022 at 9:29 AM luckydog xf <luckydogxf@xxxxxxxxx> wrote:

> One more question, as you can see `bootcmd` appears many times in
> cloud.cfg, like cloud-init/cloud_config/cloud_final stage.
>
> How can I run a command in a specific stage, like cloud_config ?
>
> And  if I want to add datasource like openstack,  I just add lines
> datasource:
>     Openstack:
>       metadata_urls: [ 'http://169.254.169.254:80' ]
>       timeout: 5 # (defaults to 50 seconds)
>      max_wait: 10 # (defaults to 120 seconds)
>
> right?
>
>
> On Fri, Mar 4, 2022 at 9:12 AM luckydog xf <luckydogxf@xxxxxxxxx> wrote:
>
>> I added lines like
>>
>> ssh_authorized_keys:  - ssh-rsa AAAAxxxx  - ssh-rsa AAAxxxxx# new random keys will not be generated#  in addition to 'rsa' and 'dsa' as shown below, 'ecdsa' is also supportedssh_keys:  rsa_private: |    -----BEGIN RSA PRIVATE KEY-----
>>
>> in /var/lib/cloud/instance/user-data.txt and reboot it. Keys were not been  created.
>>
>>
>> On Thu, Mar 3, 2022 at 4:39 PM luckydog xf <luckydogxf@xxxxxxxxx> wrote:
>>
>>> Hello,
>>>    I created ubuntu 20.04 LTS image for openstack by
>>> https://docs.openstack.org/image-guide/ubuntu-image.html.
>>>    There is a sysprep in the final stage which would remove MAC and
>>> ssh_host_xxx of sshd.
>>>     So I have to generate a new one, othewide sshd daemon fails to start.
>>>     This is cloud.cfg created by ubuntu server autoinstall.
>>>
>>>      ===
>>> #cloud-config
>>> disable_root: true
>>> growpart: {mode: 'off'}
>>> locale: en_US.UTF-8
>>> power_state: {mode: reboot}
>>> preserve_hostname: true
>>> resize_rootfs: false
>>> ssh_pwauth: true
>>> timezone: Asia/Hong_Kong
>>> users:
>>> - gecos: ubuntu
>>>   groups: [adm, cdrom, dip, plugdev, lxd, sudo]
>>>   lock_passwd: false
>>>   name: ubuntu
>>>   passwd:
>>> $6$exDY1mhS4KUYCE/2$zmn9ToZwTKLhCw.b4/b.ZRTIZM30JZ4QrOQ2aOXJ8yk96xpcCof0kxKwuX1kqLG/ygbJ1f8wxED22bTL4F46P0
>>>   shell: /bin/bash
>>> ===
>>> How can I generate these keys? Normally it should be generate by `sudo
>>> ssh-keygen -A' manually.
>>>
>>> One more thing, how can I use openstack user-data ?
>>>
>>

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