Add the following key-value pair with an empty line above and below it:
```
no_ssh_fingerprints: true
```
set users to default.
```
users:
     - default
```

Modify the following fields:

disable_root: True
preserve_hostname: false
syslog_fix_perms: root:root

Configure ssh_pwauth. This parameter specifies whether to enable password login in SSH mode.
```
ssh_pwauth: false
```

Use the number sign (#) to comment out the following statements:

mount_default_fields: [~, ~, 'auto', 'defaults', '0', '2']
manual_cache_clean: true

Add network statements.
```
network:
  config: disabled
datasource_list: [ OpenStack ]
```
For SUSE 11 SP4, you also need to add growpart statements.
```
growpart:
  mode: false
```
For Debian 8.6, the following line does not need to be added:
```
datasource_list: [ OpenStack ]
```
Add the following statement after - final-message in cloud_final_modules:
```
- power-state-change
```

Check and modify the information in system info to make it consistent with the following content:

system_info:
   distro: sles
   default_user:
      name: linux  //Username for OS login
      lock_passwd: True   //True indicates that login using a password is disabled. Note that some OSs use value 1 to disable the password login.
     gecos: redhat
groups: [adm, audio, cdrom, dialout, dip, floppy, lxd, netdev, plugdev, sudo, video]   // (Optional) Add the user to other groups that have been configured in etc/group.
      sudo: ["ALL=(ALL) NOPASSWD:ALL"]  //Current user has all the root rights.
      shell: /bin/bash   //Execute shell in bash mode.
    paths:
      cloud_dir: /var/lib/cloud/
      templates_dir: /etc/cloud/templates/
    ssh_svcname: sshd

In the preceding command, change the value of distro based on the OS, such as distro: sles, distro: rhel, distro: ubuntu, distro: debian, and dustro: fedora.

Use the number sign (#) to comment out the following statement:
```
ssh_genkeytypes: ['rsa', 'dsa']
```
(Optional) For Debian 8.6, perform the following operations:
1. Run the following commands to configure the OpenStack source:
  dpkg-reconf igure cloud-init
  
  Run the vim /etc/cloud/cloud.cfg.d/90_dpkg.cfg command to open the configuration file and check whether the items are correctly configured in the file.
```
# to update this file, run dpkg-reconf igure cloud-init
datasource_list: [ OpenStack ]
~
~
~
```
  If the configuration file content is consistent with the preceding command output, the configuration is successful.
(Optional) For EulerOS 2.2 and EulerOS 2.3, perform the following operations:
Check whether the line shown in the following figure has been commented out using the number sign (#) in the /etc/pam.d/su configuration file. If the line has been commented out, skip this step.

Cloud-Init 0.7.6