Install cloud-init

Limits

• Currently, cloud-init supports the Linux distributions of CentOS, Debian, Fedora, FreeBSD, Gentoo,  RHEL (Red Hat Enterprise Linux), SLES (SUSE Linux Enterprise Server), and Ubuntu.

• The AliYun datasource support is present in cloud-init since 0.7.9. If your on-premise server, virtual machine, or cloud host already has cloud-init installed, make sure that the version is later than 0.7.9.

  1. Connect to your on-premise server, virtual machine or cloud host.
  2. Run cloud-init --version to confirm the version.

     If the version is later than 0.7.9, you can skip this tutorial and start to make your image. Otherwise, follow the tutorial to install cloud-initInstall cloud-init.

Prerequisites

Make sure that you have installed the following programs. We use yum as an example to describe the installation. If you manage packages by using zypper or apt-get, the installation methods are similar.

• git: Downloads the source code package of cloud-init.

  Command: yum install git

• Python2.7: The basis of running and installing cloud-init.

  Command: yum install python

• pip: Installs certain Python libraries on which cloud-init depends.

  Command: yum install python-pip

We use yum as an example to describe the installation. If you manage packages by using  zypper or apt-get,  the installation methods are similar to yum.

Install cloud-init

Follow these steps to install cloud-init:

1. Connect to your on-premise server, virtual machine or cloud host.
2. Run git clone https://git.launchpad.net/cloud-init to download the cloud-init project.
3. Run cd cloud-init to change the directory to cloud-init.
4. Run python setup.py install  to install setup.py, which is the installation file of cloud-init.
5. Run vi /etc/cloud/cloud.cfg to modify configuration file cloud.cfg.
   
   

   Change the preceding content of cloud_init_modules cloud_init_modules  to the following:

   
   # Example datasource config
   # The top level settings are used as module
   # and system configuration.
   # A set of users which may be applied and/or used by various modules
   # When a' default' entry is found it will reference the 'default _ user'
   # From the distro configuration specified below
   users:
   -default
   user:
   name: root
   lock_passwd: False
   # If this is set, 'root' will not be able to SSH in and they 
   # Will get a message to login instead as the above $user
   disable_root: false
   # This will cause the set + update hostname module to not operate (if true)
   preserve_hostname: false
   syslog_fix_perms: root:root
   datasource_list: [aliyun]
   # Example datasource config
   datasource:
   Aliyun:
   support x en: false
   timeout: 5 # (defaults to 50 seconds)
   max_wait: 60 # (defaults to 120 seconds)
   # metadata_urls: ['blah. com']
   # The modules that run in the 'init 'stage
   cloud_init_modules:

Troubleshooting

The missing libraries may vary depending on the operating system. You can use pip to install the missing libraries. After you install the missing libraries, install setup.py again.

• If the following message appears, it indicates the six library is missing from Python. Run pip install six to install the six library.

  
  File "/root/cloud-init/cloudinit/log. py", line 19, in 
  import six
  Importerror: No module named Six
  

• If the following message appears, it means the oauthlib library is missing from Python. Run pip install oauthlib to install the oauthlib library.

  
  File "/root/cloud-init/cloudinit/fig", line 20, in 
  import oauthlib.oauth1 as oauth1
  Importerror: No module named oauthlib.oauth1
  

If no dependency library is specified according to the error output, you may pip install -r requirements.txt to install all the dependency libraries listed in file requirements.txt of cloud-init.

Next step

Make an image and Import custom images.

Reference

cloud-init Alibaba Cloud (AliYun)