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This article will explain in detail how to install cloud-init in linux. The editor thinks it is very practical, so I share it with you for reference. I hope you can get something after reading this article.

Install cloud-init

If you need to create an ECS instance using existing images, you can complete the configuration by importing images. When importing Linux images, it is recommended that you install cloud-init on the source server, virtual machine or CVM in advance to ensure the successful configuration of the imported images hostname, NTP and Yum sources.

Matters needing attention

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

If your source server, virtual machine or CVM has installed cloud-init, you need to make sure that the cloud-init version number is higher than 0.7.9. The image containing the lower version of cloud-init will cause relevant instance configuration failures, such as NTP, HostName, Yum and so on.

Log in to the source server, virtual machine or CVM.

Run cloud-init-- version to query the cloud-init version.

If your cloud-init version number is higher than 0.7.9, that version is available. Otherwise, you need to install cloud-init.

prerequisite

Before installing cloud-init, your source server, virtual machine, or CVM must install the following software.

Git: download the cloud-init source package

Yum installation method: yum install git

The basis of Python2.7:cloud-init operation and installation

Yum installation method: yum install python

Pip: install Python libraries that cloud-init depends on

Yum installation method: yum install python-pip

The installation of yum is listed here. The package manager for zypper or apt-get is installed in a similar way to yum.

Install cloud-init

You can install cloud-init by following these steps:

Log in to the source server, virtual machine or CVM of the image to be imported.

Run git clone https://git.launchpad.net/cloud-init to download the cloud-init source code package from the cloud-init official website.

Run cd cloud-init to enter the cloud-init directory.

Run the installation file setup.py for the python setup.py install installation cloud-init.

Run vi / etc/cloud/cloud.cfg to modify the configuration file cloud.cfg.

Modify the previous configuration of 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_xen: 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 in different images may be different, which you can install through pip. Repeat step 4 above after installation.

Missing six and oauthlib libraries

During installation, if the following message appears, Python is missing the six library. You can use pip to install the library: pip install six.

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

During installation, if the following message appears, Python is missing the oauthlib library. You can install the oauthlib library: pip install oauthlib using pip.

File "/ root/cloud-init/cloudinit/url_helper.py", line 20, in import oauthlib.oauth2 as oauth2 ImportError: No module named oauthlib.oaut)

There is no explicitly missing dependent library when the error is prompted.

If there is no clear indication of which dependent libraries are missing when the installation error is reported, you can install all dependent libraries according to the libraries shown in cloud-init 's requirements.txt file and run pip install-r requirements.txt.

On how to install linux cloud-init to share here, I hope that the above content can be of some help to you, can learn more knowledge. If you think the article is good, you can share it for more people to see.

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