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Cloud init examples

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  1. Examples: # # Allow a user unrestricted sudo access. # sudo: ALL= (ALL) NOPASSWD:ALL # # Adding multiple sudo rule strings. # sudo: # - ALL= (ALL) NOPASSWD:/bin/mysql # - ALL= (ALL) ALL # # Prevent sudo access for a user. # sudo: False # # Note: Please double check your syntax and make sure it is valid. # cloud-init does not parse/check the.
  2. An example of where this is used in Azure, it is common for the Linux OS images with cloud-init to have an Azure datasource directive, that tells cloud-init what datasource it should use, this saves cloud-init time
  3. cloud-init-example Overview. The aim of this project is to provide a better understanding of the underlying functionality of cloud-init and the order in which it executes various formats provided via user-data. The following formats are used

Cloud-init also works across distributions. For example, you don't use apt-get install or yum install to install a package. Instead you can define a list of packages to install. Cloud-init automatically uses the native package management tool for the distro you select While cloud-init started life in Ubuntu, it is now available for most major Linux and FreeBSD operating systems. For cloud image providers, then cloud-init handles many of the differences between cloud vendors automatically — for example, the official Ubuntu cloud images are identical across all public and private clouds For more information about how cloud-init works natively in Azure and the supported Linux distros, see cloud-init overview. Run a bash script with cloud-init. With cloud-init you do not need to convert your existing scripts into a cloud-config, cloud-init accepts multiple input types, one of which is a bash script The cloud-init documentation for the NoCloud datasource has detailed information and examples. This is not to say that you can't store the configuration files on your network if one is available. For instance, you could provide the NoCloud datasource on the kernel command line, and specify that the data is stored locally or is accessible on.

preserve_sources_list: (boolean) By default, cloud-init will generate a new sources list in /etc/apt/sources.list.d based on any changes specified in cloud config. To disable this behavior and preserve the sources list from the pristine image, set preserve_sources_list to true.. The preserve_sources_list option overrides all other config keys that would alter sources.list or sources.list.d. When false(the default), cloud-init will checkand clean the cache if the instance IDs do not match (this is the default, as discussed above). When true, cloud-init will trustthe existing cache (and therefore not clean it). 1.3.1Manual Cache Cleaning cloud-init ships a command for manually cleaning the cache: cloud-init clean The ability to quickly stand up a guest OS with cloud-init is most often associated with deployment of virtual machines in an IaaS like EC2 or Azure.. But cloud-init is not just for remote cloud providers, and using cloud-init for local images that can be quickly deployed in KVM works great for local development and testing cloud-init has multiple input types, cloud-init will use first line of the customData/userData to indicate how it should process the input, for example #cloud-config indicates a the content should be processed as a cloud-init config. Press ctrl-X to exit the file, type y to save the file and press enter to confirm the file name on exit

Cloud config examples — cloud-init 21

cloud-init. Cloud-init is the industry standard multi-distribution method for cross-platform cloud instance initialization. It is supported across all major public cloud providers, provisioning systems for private cloud infrastructure, and bare-metal installations /var/log/cloud-init.log: The actual process logs for cloud-init's processing of the configuration files. /var/log/cloud-init-output.log: Any output produced by the processing of the configuration can be found here. You can usually find some good information about what happened by using grep to search these files Introduction. The cloud-init program that is available on recent distributions (only Ubuntu 14.04 and CentOS 7 at the time of this writing) is able to consume and execute data from the user-data field of the DigitalOcean metadata service.This process behaves differently depending on the format of the information it finds. One of the most popular formats for scripts within user-data is the. Line 59-63: The power-state section instructs cloud-init in which state the instance shall be left after cloud-init completes. In this example, the system is rebooted on condition that a specific file exists. This file is created by cloud-init when it has decided that a reboot of the instance is required

All Linux virtual machines have Cloud-Init in their boot phase, whether they're as small as a t3.nano instance in AWS, as large as a Standard_HB60rs in Azure, or and on-premise OpenStack instance. Originally designed for Ubuntu in EC2, Cloud-Init provides at-first-boot configuration support across most Linux distributions and all major clouds cloud-init Documentation¶. Cloud-init is the industry standard multi-distribution method for cross-platform cloud instance initialization. It is supported across all major public cloud providers, provisioning systems for private cloud infrastructure, and bare-metal installations Cloud-init is the standard for customizing cloud instances and now multipass can also make use of cloud-init to customize an instance during launch. Below is an example of launching a new VM with cloud-init user-data: multipass launch -n my-test-vm --cloud-init cloud-config.yaml user-data Forma Creating our cloud-init. The resource documentation can be found here. We are going to create this in our Terraform after the provider since it is a data block, and that is the convention that I use. data template_cloudinit_config config { gzip = true base64_encode = true # Main cloud-config configuration file. part { content_type = text. Once the VM has been provisioned, cloud-init will run through all the modules and script defined in --custom-data in order to configure the VM. If you need to troubleshoot any errors or omissions from the configuration, you need to search for the module name (disk_setup or runcmd for example) in the cloud-init log - located in /var/log/cloud.

In the example below, a simple cloud-init network-config is stored in the cloudInitNoCloud Volume's networkData field as clean text. There is a corresponding disks entry that references the cloud-init volume and assigns it to the VM's device For a more complex example, the following configuration would output the init stage to /var/log/cloud-init.out and /var/log/cloud-init.err, for stdout and stderr respectively, replacing anything that was previously there.For the config stage, it would pipe both stdout and stderr through tee-a /var/log/cloud-config.log.For the final stage it would append the output of stdout and stderr to /var. In the following examples, the commands from the Install a LAMP Web Server on Amazon Linux 2 are converted to a shell script and a set of cloud-init directives that run when the instance launches. In each example, the following tasks are performed by the user data: The distribution software packages are updated Using cloud-init is an effective way to configure aspects of a VM (such as networking, yum/apt mirrors, etc.) prior to any software managed by CycleCloud (HPC schedulers) being installed. Below is a simple example of specifying a bash script to run on boot using the CloudInit attribute in a cluster template Networking Config Version 2¶. Cloud-init's support for Version 2 network config is a subset of the version 2 format defined for the netplan tool. Cloud-init supports both reading and writing of Version 2; the latter support requires a distro with netplan present

Understanding cloud-init - Azure Virtual Machines

cloud-init is a piece of software created to help with initializing virtual machines on multiple different cloud software platforms. It is a collection of Python scripts that run on a VM's first boot. It understands and talks to different data providers like Amazons or the Openstack metadata service For more information on creating a cloud-init script, refer to the cloud-init documentation. » Add the cloud-init script to the Terraform configuration Open the main.tf file. Notice how the template_file.user_data data block retrieves the contents of the add-ssh-web-app.yaml file. Then, it is passed into aws_instance.web as a user_data value to be initialized when the instance is created Cloud-init is a widely utilized industry-standard method for initializing cloud instances. Cloud providers use Cloud-init to customize instances with network configuration, instance information, and even user-provided configuration directives. It is also a great tool to use in your private cloud at home to add a little automation to the initial setup and configuration of your homelab's. # label, type and device, then cloud-init will skip the creation of # the file system. # # any: If a file system that matches the file system type and device, # then cloud-init will skip the creation of the file system. # # Devices are selected based on first-detected, starting with partitions # and then the raw disk For an example that shows how to use cfn-init to create a Windows stack, see Bootstrapping AWS CloudFormation Windows stacks. Syntax. The configuration is separated into sections. The following template snippet shows how you can attach metadata for cfn-init to an EC2 instance resource within the template

Cloud Init Example. GitHub Gist: instantly share code, notes, and snippets The following is a simple example of how to provision and pass custom data to an Ubuntu Linux VM: In this example, custom-data.txt could be a cloud-init configuration file, or simply a shell script (as long as it starts with #!, then cloud-init will execute it). Give it a try

Cloud-init Example Configuration. GitHub Gist: instantly share code, notes, and snippets Cloud-init setup. Configure the setup of cloud-init, overriding the defaults. unverified_modules Many of the cloud-init modules specify a list of supported operating systems, ensuring that the module only runs on verified systems. To override this behaviour, you can add a list of modules that should be run anyway. The default list is empty. Another example: if you detach the transient NoCloud vdisk, the script will not detect any meaningful DataSource, and hence will not launch cloud-init into a perpetual loop. After the heuristics are run, the cloud-init services are enabled and only for plausible DataSources. References. cloud-init: project and docs; cloud-init images: Ubuntu image Cloud-Init is an easy way to specify the configuration which needs to be applied to a deployed virtual machine. Executed when the machine is first provisioned, it can easily configure the environment on your behalf. The process of using Cloud-Init with ARM has been documented several times on the Microsoft site I must include mount entries in cloud-init. Changing cloud-init causes hosts to be recreated. This makes deployments take longer and ads more risk. It's a lot of extra code in my Terraform configs. I'm starting to understand why people put up with the complexity of Kubernetes

Examples from OSM Hackfests - OSM Public Wiki

The cloud-init program is a bootstrapping utility for pre-provisioned disk images that run in virtualized environments, usually cloud-oriented services. You use it to. For more information on the specifics of cloud-init user data scripts, see the official cloud-init documentation. For an example of what a cloud-config script or a Bash post-install script looks like, check out these sample scripts listed in our public API documentation The custom script allows for additional Cloud-Init configuration that is supported by Cloud-Init but not available in the Cloud-Init fields. For more information on custom script examples, see Cloud config examples. Using Cloud-Init to Initialize a Virtual Machine. This procedure starts a virtual machine with a set of Cloud-Init settings

cloud-init-example Overview. The aim of this project is to provide a better understanding of the underlying functionality of cloud-init and the order in which it executes various formats provided via user-data. The following formats are used Cloud-init allows you to customize a new server installation during its deployment using data supplied in YAML configuration files. This tutorial will briefly introduce one method of utilizing cloud-init when provisioning servers at ProfitBricks. A quick rundown of the procedure we will follow is: Create the customized meta-data and user-data. The way of how the cloud-init operates on our virtual VCE. Since version 3.3.2, the virtual VCE will mandate to feed it with a valid cloud-init data source so it can initially spun-up on a compute host. Cloud-init is configured to use the following data sources: NoCloud, ConfigDrive, OpenStack, Azure, Ec2 and VCOVF Cloud-init is a great tool if you are a cloud user, if you are spinning up VMs or containers and your cloud provider is kind enough to ask you for a cloud-config, it is great! With a cloud-config file aka your user-data you can add users, run arbitrary commands, install packages right as the VM is being created

The examples subdirectory of cloud-init can be seen in bzr branch lp:cloud-init doc/examples/ Video:- Introduction to cloud-init. Footnotes. The following was output of 'ec2-run-instances --user-data-file=ud.txt' where ud.txt was sufficiently large on 2010-06-28: 'Client Now we should analyze cloud-init.log to verify what modules were run during upon Instance start: [centos@centos-7-ci ~]$ sudo cat /var/log/cloud-init.log Below an example snippet from cloud-init.log presenting some modules, that were executed during boot

WhiteBoard Coder: Amazon AWS Ubuntu cloud-init

GitHub - ukayani/cloud-init-example: Example of setting

The documentation is a bit lacking, but from the comments on the example in the upstream docs you learn: # runcmd contains a list of either lists or a string # each item will be executed in order at rc.local like level with # output to the console # - if the item is a list, the items will be properly executed as if # passed to execve(3) (with the first arg as the command). # - if the item is a. Now that you've enabled Cloud-Init on your templates or images, it's time to look at some examples/possibilities. Cloud-Init starts at the virtual machine's first boot and retrieves the metadata that has been provided from an external provider. In the case of Cloud Automation Services, the metadata or instructions that are needed to. Cloud-init's behavior can be configured via user-data. User-data can be given by the user at instance launch time. This is done via the --user-dataor --user-data-fileargument to ec2-run-instances for example. •Check your local clients documentation for how to provide a user-data string or user-data file for usage b # When cloud-init is finished running including having run # cloud_init_modules, then it will run this command. The default # is to emit an upstart signal as shown below. If the value is a # list, it will be passed to Popen. If it is a string, it will be # invoked through 'sh -c'. # # default value

Tutorial - Customize a Linux VM with cloud-init in Azure

The most common path in Public Cloud today is to leverage Cloud-Init. Cloud-Init is a bootstrapping utility for virtual machines used to apply customizations. A couple of examples of these customizations could be. Injecting specific User data (username, password, SSH key, specific permissions) Cloning down source control (Github, Gitlab, etc. To configure cloud-init we have the nocloud data source. There are two kind of data to provision the image with cloud-init, user-data and meta-data. See cloud config example, cloud-init has a lots of helpers to provision an image. The configuration can be set: in a iso file mounted in the VM; in smbios option when starting qem This chapter includes examples of the most common configuration tasks for cloud-init.. Your cloud-init configuration can require that you add directives to the cloud.cfg file and the cloud.cfg.d directory. Alternatively, your specific data source might require that you add directives to files, such as a user data file and a metadata file Specific examples using cloud-init. Wordpress and LAMP installation via cloud-init. Lets use cloud-init to set up a basic LAMP stack and then download the latest version of Wordpress. While this isn't the most comprehensive example of a Wordpress install, it will give you a good idea of how easy a basic deployment with cloud-init can be

cloud-init ubuntu nocloud example with network config Raw .gitignore *.img *.raw: Raw README.md Boot Ubuntu providing it network config in NoCloud Datasource. Ubuntu images can be booted with an additional disk that provides user-data, meta-data and network configuration. This is described some in the. Define the cloud-init script as a set of runcmd steps. The runcmd section of a cloud-init script contains a list that will be executed in order at the rc.local stage of a Linux VM's first boot. Here's an example script I use to install Java Runtime and configure a Minecraft server Tutorial ¶. Tutorial. First, download your desired type of installer from here , then install it and fill in configuration options which suits you best. Based on the current selected cloudbase-init installer architecture, it'll be available under C:\Program Files or C:\Program Files (x86) as Cloudbase Solutions\Cloudbase-Init directory

How To Configure Netplan (Ubuntu) Network - Examples

cloud-ini

Use cloud-init to run a bash script in a Linux VM on Azure

Cloud-Init directives must begin with #cloud-config, then followed by the the module directives. In this example we use the Write File module to write the text Hello World under the parameter content into the file /index.html specified by the parameter path Alternatively, if you want simply to use cloud-init to run a shell script, you can provide a shell script (complete with shebang (#!) ) instead of providing cloud-init with a '.yaml' file. See this website for examples of how to put shell scripts in bootcmd and runcmd

After a few seconds (maybe minutes depending on your cloud-init file) your VM should be up and running. Now you can check the results by executing vagrant ssh.In my example it is easy to verify that a user test_user_unique_name is present by executing cat /etc/passwords and that a package python-is-python3 was installed with python --version (it outputs Python 3 But you could still use cloud-init for fine tuning and additional configurations. If you use ready-to-run virtualisation images, you need something like the following. This example can be enhanced with all other valid cloud-init options. meta-data instance-id: iid-MICROOS01 network-interfaces: | auto eth0 iface eth0 inet dhcp user-dat By default, cloud-init allows only one content type in user data at a time. However, this example shows both text/cloud-config and text/x-shellscript content-types in a mime-multi part file.. The text/cloud-config content type overrides how frequently user data is run in the cloud-init package by setting the SCRIPTS-USER parameter to ALWAYS.. The text/x-shellscript content type provides the. You can find more configuration options at https://netplan.io/examples. Reload the cloud-init configuration. This will reboot your server. sudo cloud-init clean -r Share. Improve this answer. Follow edited Dec 2 '19 at 7:04. answered Dec 2 '19 at 6:58. Ryan Ryan. 15 4 4 bronze badges The cloud-init provider for Pulumi can be used to render valid MIME-multipart cloud-init config. See the full API documentation for complete details of the available cloud-init provider APIs. Example. const cloudinit = require (@pulumi/cloudinit) const resourceConf = new cloudinit

EC2Cluster with cloud-init¶. When any of the VMCluster based cluster managers, such as EC2Cluster, lauch a new default VM it uses the Ubuntu base image and installs all dependencies with cloud-init.. Instead of doing this every time we could use Packer to do this once, and then reuse that image every time. Each VMCluster cluster manager has a class method called get_cloud_init which takes the. Cloud-Init uses UserData, which is part of instance metadata. With AWS, you can pass two types of user data to Amazon EC2: shell scripts and cloud-init directives. The cloud-config files are text files encoded in base64, with more details covered in the documentation here. cloud-init also works across distributions. For example, you don't use.

What Is cloud-init? How to Use cloud-init CentOS OpenLogi

With Cloud-init it is possible to inject informations such as ssh keys, network information or user profiles in an standarized way at boot time. The benefit of using Cloud-init is the pre-provisioning of necessary configuration items such as a static ip address or a default user with activated ssh public key authentication The Example. To begin, we are going to work in some fairly simple ideas leveraging the code in this repo: Configure our network interface with a static ip address; and; Create a user, and assign a public SSH key for authentication. Cloud Init. You can find a ton of examples for cloud-init on their readthedocs site

Modules — cloud-init 21

Cloud-init Provider. The cloud-init Terraform provider exposes the cloudinit_config data source, previously available as the template_cloudinit_config resource in the template provider, which renders a multipart MIME configuration for use with cloud-init.. Use the navigation to the left to read about the available data sources. Example Usag You can also specify a custom script, a script in YAML format, to run on boot. The custom script allows for additional Cloud-Init configuration that is supported by Cloud-Init but not available in the Cloud-Init fields. For more information on custom script examples, see Cloud config examples ARM Templates and Cloud Init. If you've been spending much time with Linux VMs, you may have encountered Cloud-Init. Cloud-Init is an easy way to specify the configuration which needs to be applied to a deployed virtual machine. Executed when the machine is first provisioned, it can easily configure the environment on your behalf

cloud-init - Read the Doc

Cloud-Init and User-Data. Tagged in. compute. User Data is a way to automatically provision your machine with additional software or settings. You can provide a set of commands (ie. a script) or enter cloud-config information as YAML. It is important to understand that the User Data provided will be used only when the machine is created For now, the second to last part in this series. And although technically not a 'real' cloud-init post, I consider it related to Part 1, Part 2 and Part3 in this series. In this post I'll show how you can run scripts on these 'cattle' stations we just deployed.. Introduction. The purpose of this post is quite straightforward

KVM: Testing cloud-init locally using KVM for an Ubuntu

With the new integrated Cloud-Init experience for Windows Server, you can easily bootstrap an instance with more applications, host configurations, and custom setups. This capability is taken care of by a Cloud-Init custom user data startup script, a feature that is now available on Oracle Cloud Infrastructure compute instances running either. Fortunately, H e tzner allows sending some cloud-init user data. I copy/paste some stuff I cooked up based on examples and fail. How to debug? Turns out it's not exactly straightforward. Cloud-init was designed with cloud providers in mind and its no-cloud provider that accepts files reads them off a dedicated drive

LXDで作ったコンテナをcloud-initで初期化してみる - くろの雑記帳

Overview of cloud-init support for Linux VMs in Azure

C cloud-init-example Project information Project information Activity Labels Members Repository Repository Files Commits Branches Tags Contributors Graph Compare Locked Files Issues 0 Issues 0 List Boards Service Desk Milestones Iterations Merge requests 0 Merge requests 0 Requirements Requirements CI/CD CI/CD Pipelines Jobs Schedules Test Case oh yes, the launchpad one. Anyway, you have summed up all possible Cloud-init docs in one place. This should be really helpful for any one looking for Cloud-init documentation. thanks for your time. - slayedbylucifer Nov 11 '13 at 7:4 Hello cloud-init The purpose of this communication is to provide a status update and highlights for any interesting subjects from cloud-init upstream. If you would like to reach the server team, you can find us at the #cloud-init channel on Freenode. Alternatively, you can sign up and use the cloud-init mailing list cloud-init discourse hub for more discussion. Spotlight: Canonical has started.

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cloud-init already knows how to get a GPG key, how to add an APT source (even if it is HTTPS), how to update APT before installing packages, and how to do all the other stuff you'll find in various shell script heavy ways of doing this Automate creation of VMWare virtual machines In the previous post about VMWare templates with packer and also the revisted post about that topic we introduced the automated generation of VMWare templates. In this posting we are going the next step and also automate the generation of virtual machines on VMWare using terraform and cloud-init Cloud-init with Terraform in vSphere environment. Cloud-init is an interesting industry solution for the distribution of computational resources across the major cloud providers (private included). Starting from an empty template, it's possible to attach and apply every OS configuration, without manual intervention