Cloud init data This data is used to determine what users to create, set a Nov 22, 2022 · The new autoinstall method uses a “user-data” file similar in usage to what is done with cloud-init. cloud-init-generator. service: 在网络启动之后启动该服务，用于寻找datasource，配置网络，配置user-data，运行指定plugin。 Jun 25, 2011 · For Windows, user data has a special persist tag, but for Linux, you need to use MultiPart User data to setup cloud-init first. 0) Disk partitions and resize root partition on boot (cloud-init)¶ When you create a Linux image, you must decide how to partition the disks. This allows you to specify actions that should happen to your instance at boot time. These logs will show you what happened during the cloud-init process and can help you find and fix any issues. For more information, see the cloud-init documentation. log. 04 on bare metal or virtualbox VM by pxelinux, cloud-init doesn't pick up user-data file. The cloud-init mechanism we will use is via “cloud-config”. Apr 21, 2014 · This means that for Ubuntu you can use custom data to provision a VM using a cloud-init configuration file, or just simply send a script that will be executed by cloud-init during provisioning. . Cloud-init Cloud-init 는 클라우드 인스턴스 초기화 도구로 시스템을 부팅하는 동안 클라우드 인스턴스/VM 또는 네트워크 구성을 자동화한다. Read our Code of Conduct. When providing autoinstall via cloud-init, the autoinstall configuration is provided as Cloud config data. Here we deploy a cloud-init user-data script into a LXD container. The provided values must have a first line that indicates what type of user data format is being passed to cloud-init. This user-data is made available either from configured config-drive or from the Metadata service Jan 15, 2025 · Cloud-init is the industry standard method for cloud instance initialization, provisioning systems for private cloud infrastructure and bare-metal installations. 1 release: * spanned about 3 months * had 23 contributors tests: assert cloud-init user-data cert is the only cloud-init を含む新しい仮想マシン (VM) を作成するには、meta-data ファイルと user-data ファイルを作成します。 meta-data ファイルには、インスタンスの詳細が含まれます。 Apr 22, 2022 · Deploy Ubuntu 20. coreos-cloudinit ) users should switch the data source to ConfigDrive. Jul 5, 2020 · Thank you for that information. 3 and autoinstall not starting. If cloud-init is not available on the image, then you can still make use of the custom data Jan 22, 2020 · User-data boot scripts and cloud-init¶ When booting a server it is possible to specify the contents of the user-data to be passed to that server. iso 作为额外驱动器加载到虚拟机中，例如 qemu-system-x86_64 -cdrom cloud-init. target是否应包含在引导目标中。 默认情况下，此生成器将启用cloud-init。 它不会启用cloud-init，如果：A file exists: /etc/cloud/cloud-init Dec 3, 2024 · 使用命令方式利用云镜像批量创建虚拟机上文《虚拟化|PVE8. iso -volid CIDATA -joliet -rock user-data meta-data 现在将 cloud-init. txt config if you saved the file outside of your present working directory. clean Remove logs and artifacts so cloud-init can re-run. 数据准备好， 完成最后action的工作就必须cloud-init出马了， 它能够把这些数据在虚拟机boot的时候执行起来。 Oct 9, 2023 · cloud-init-local. Executes cloud-init init --local; cloud-init-main. It will detect this on its own as long as you provide a vfat or iso9660 filesystem labeled cidata that contains files named meta-data and user-data. It took me 5 fucking hours to figure out how to properly configure networking on recent cloud-init (Ubuntu 16. The following example creates a VM; note that the VM name is also appended with the random suffix. 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. , meta-data). g. The Ubuntu installer, ubiquity, was modified for this and became subiquity (server ubiquity). # List all top-level instance-data keys available % cloud-init query --list-keys # Find your EC2 ami-id % cloud-init query ds. **注意：**默认情况下，cloud-init 指令仅在实例启动时运行。但是，当使用此用户数据脚本时，cloud-init 会在每次实例重启时向该实例添加公钥。如果删除用户数据脚本，则会恢复默认功能。 8. Sep 11, 2020 · Cloud images are operating system templates and every instance starts out as an identical clone of every other instance. cfg. Copy the text below and paste it into the cloud_init May 2, 2025 · Access instance using ssh public key (cloud-init) Process user data and other metadata (cloud-init) Paravirtualized Xen support in Linux kernel (Xen hypervisor only with Linux kernel version < 3. Provide the full path to the cloud-init. Vendor-data and/or user-data. 1 is now available. 04. analyze Devel tool: Analyze cloud-init logs and data. Apr 9, 2025 · cloud-init工具支持的自定义数据类型包括可直接配置实例的User-Data和Cloud Config格式，同时还支持其他用户数据格式，最常见的为include文件和Gzip压缩内容。除cloud-init初始化工具外，一些使用较早版本镜像的实例也采用Upstart Job进行初始化工作。 Apr 15, 2025 · The autoinstall configuration is provided via cloud-init configuration, which is almost endlessly flexible. 您的 cloud-init 配置可能需要在 cloud. Metadata includes data associated with a specific datasource, for example, metadata can include a server name and instance ID. Jan 7, 2020 · Meta Data与Cloud-init的关系. X结合Cloud-Init工具使用云镜像快速创建虚拟机》，作者介绍了在ProxmoxVE8. Configure network, assign static IPv4, IPv6 IP address, configure SSH, create bind, change password and many more Refer to the cloud-init Documentation section User-Data Formats for information about the types of user data that cloud-init allows. To configure the network, storage, and users, you need to create a seed image that contains the necessary cloud-init data. log and /var/log/cloud-init-output. The docs have a simple tutorial which does exactly this: it uses QEMU to run an image, and the qemu-system-x86_64 command line sets the image smbios info to specify where the Python webserver is Aug 5, 2019 · Generally, whenever you provision a virtual machine—obviously everybody does that with Terraform and not using the portal—but if you are using the portal, there’s usually a thing called user_data, Azure calls it Cloud-Init directly, but every cloud has some different way of specifying a bunch of data that’s going to form the What is instance-data? ¶. Use cloud-init to configure: Setting a default locale; Setting the hostname Cloud-init release 25. It's not mentioned anywhere you need to provide dsmode: local. e. ssh/authorized_keys ファイルを設定し Aug 5, 2019 · Generally, whenever you provision a virtual machine—obviously everybody does that with Terraform and not using the portal—but if you are using the portal, there’s usually a thing called user_data, Azure calls it Cloud-Init directly, but every cloud has some different way of specifying a bunch of data that’s going to form the From what I have been reading I think I can set cloud-init to grab the meta-data and user-data files from a URL. json¶. It has no documentation at all. Nov 19, 2022 · When I go to ssh into the device, its ECDSA fingerprint changes every time. You can update your configuration to ensure that your user data scripts and cloud-init directives run every time you restart your instance. 选择保存。 9. ami_id # Format your cloud_name and region using jinja template syntax % cloud-init query --format 'cloud: {{ v1. 实现 instance 定制化，cloud-init（或 cloudbase-init）只是故事的一半，metadata service 则是故事的的另一半。两者的分工是：metadata service 为 cloud-init 提供自定义配置数据，cloud-init 完成配置工作。 架构图 May 6, 2025 · cloud-init-datasources¶ Configures cloud-init to only use an explicit list of data sources. Its code is horrible. Cloud instances are initialized from a disk image and instance data: Cloud metadata; User data (optional) Vendor data (optional) Cloud-init will identify the cloud it is running on during boot, read any provided metadata from the cloud and initialize the system accordingly. json and instance-data-sensitive. d. Because KVM and VMware environments do not have Amazon EC2 Instance Meta Data Service (IMDS), an alternate method of configuring Amazon Linux 2023 is required, and providing a seed. Cloud-init is an open source initialization tool that was designed to make it easier to get your systems up and running with a minimum of effort, already configured according to your needs. This data tells cloud-init what actions to take. User data that will be acted upon by cloud-init must be in one of the following types: Add your public SSH key to your cloud-init script. You can place user data in a local file and pass it through the --user-data <user-data-file> parameter at instance Oct 25, 2024 · 腾讯云的 Linux 公有镜像都预安装了 Cloud-Init 服务。由于 Cloud-Init 服务主要用于实现对 CVM 实例的初始化操作（例如，对 DNS，Hostname，IP 等信息的配置），以及执行一些用户在创建 CVM 实例时指定首次开机启动要执行的自定义脚本，因此需要以 root 用户运行 Cloud-Init Jun 28, 2018 · If you've installed a VM at a cloud provider you'll have seen a user-data block that you can fill in - this is returned to cloud-init as the user data. In order to do that you have to move the network section into its own file and build the cloud-init image with the --network-config= option. cloud_name }} myregion: {{% v1. It accepts multiple formats of custom data, such as cloud-init configuration and scripts. target. Similar to the Linux Agent, if errors happen during execution of the configuration processing or scripts when cloud-init is processing the custom data, that's not a fatal provisioning failure. This can cause delays or even boot problems depending on your environment. user-data¶ May 15, 2025 · community. cloud-initを利用できる環境（cloud-init 18. cloud_init_data_facts module – Retrieve facts of cloud-init Jul 25, 2021 · cloud-init's behavior can be configured via user-data. on a running cloud instance). If available in the distributions, it allows for configuration of many common parameters of the instance directly after installation. The status can be checked by running the following command: Jan 29, 2020 · **「cloud-initをデバッグする」というタイトルを付けたが、cloud-init自身はデバッグの対象ではない。正確には「cloud-initのUser-Dataに指定したスクリプトのデバッグ方法」**である。 1-1. txt). yaml file and paste the contents of tf-cloud-init. Sep 1, 2021 · sudo apt-get install cloud-init. timezone is supported in the user-data timezone module which is documented further in the cloud-init docs. Ex: cloud-localds -v --network-config=network-config-v2. sudo cat /var/log/cloud-init-output. May 29, 2020 · 树莓派 cloud-init 配置 文章目录树莓派 cloud-init 配置user-data user-data #cloud-config # 修改登录用户密码 chpasswd: expire: false list: -ubuntu:123456 # ssh密码登录配置 ssh_pwauth: true # 配置ntp服务器 ntp: enable: true servers: -ntp2. Cloud-init is an open source project that warmly welcomes community projects, contributions, suggestions, fixes and constructive feedback. json files are well-formed JSON and record the set of keys and values for any metadata processed by cloud-init. Amazon Linux contains a customized version of cloud-init. Corresponds to the What is instance-data? ¶. When cloud-init runs, it will typically populate /var/lib/cloud-init/instance with any information retrieved from the cloud provider, so you should find a copy of the user data in that directory. Cloud-init is a software package that automates the initialization of servers during system boot. sudo cat Nov 19, 2022 · When I go to ssh into the device, its ECDSA fingerprint changes every time. iso image to configure Amazon Linux 2023 running on KVM or VMware. 04 as an example. Jun 5, 2020 · The Ubuntu Automated Server Installs Config File Reference describes the cloud-init user-data top level key. diabled exists. 2 days ago · How to specify user or vendor data¶. Join the cloud-init mailing list. Cloud-init contains a growing collection of data source modules and most are enabled by default. features List defined features. # 3. The autoinstall “user-data” YAML file is a superset of the cloud-init user-data file and contains directives for the install tool curtin. 04 cloud image) with local datasource. The JSON-encoded data included in the POST request sent to the Hetzner Cloud API contains the key/value pair "ssh_keys": ["root-ssh-key"]. The article is using Ubuntu 20. com # 配置时区 timezone: Asia Apr 21, 2014 · This means that for Ubuntu you can use custom data to provision a VM using a cloud-init configuration file, or just simply send a script that will be executed by cloud-init during provisioning. That should catch syntax errors (stuff not itn the schema) and typos or misconfigured YAML (see post for a nice tutorial on YAML). Typical user-data includes files, YAML, and shell scripts whereas typical meta-data includes server name, instance id, display name, and other cloud Feb 9, 2024 · 参考リンク (References) canonical/cloud-init: Official upstream for the cloud-init: cloud instance initialization; cloud-init 23. service: 在网络启动之前启动该服务，用于寻找datasource，配置网络，配置user-data，运行指定plugin。 cloud-init. 6 # 7 # Make sure that this file is valid yaml before starting instances. From what I have been reading I think I can set cloud-init to grab the meta-data and user-data files from a URL. The validation command would look like this, cloud-init devel schema --config-file user-data. 2. metadata. The first line does not start with #cloud-config. These variables may be used in cloud-init templated cloud-init configurations. yaml cloud_init_modules: // 定义init阶段需要执行的模块 - migrator // 迁移老的cloud-init数据为新的 - bootcmd // 启动时执行相关命令 - write-files // 根据cloud. You can modify IONOS cloud-init's behavior via user May 17, 2022 · 项目简介 cloud-init是一款用于初始化云服务器的工具，它拥有丰富的模块，能够为云服务器提供的能力有：初始化密码、扩容根分区、设置主机名、注入公钥、执行自定义脚本等等，功能十分强大。 目前为止cloud-init是云服务器初始化工具中的事实标准，它几乎适用于所有主流的Linux发行版，也是各大 Amazon Linux 2023 has been qualified with the following data sources: NoCloud This is the traditional method of configuring on-premises images via a virtual CD-ROM containing a seed ISO9660 image with cloud-init configuration files. It never matches the fingerprint of the keys in ed25519_private/public from the user-data. All files in this Jan 23, 2025 · init initializes cloud-init and performs initial modules modules activates modules using a given configuration key single run a single module query Query standardized instance metadata from the command line. ) So I think it's generating new keys on boot, and I'm at a loss for how May 6, 2023 · Let me start by explaining how to use cloud-init on bare metal. cloud-init 可以配置来忽略任意用户数据。在配置文件中设置 allow_userdata: false 将禁用 cloud-init Dec 6, 2019 · An OVA image that is configured to use cloud-init. Static user data validation¶ Cloud-init is capable of validating cloud config user data directly from its datasource (i. Cloud-init 旨在简化配置和自定义云实例的过程。它允许您通过 cloud-init 配置文件指定各种配置选项。这包括创建用户帐户、安装软件包和特定内核版本、配置网络、设置 SSH 密钥等。 当使用 cloud-init 启动云实例时，会自动应用 cloud-init 配置文件中指定的配置。 Mar 5, 2019 · For example, one application that uses user data is the cloud-init system, which is an open-source package from Ubuntu that is available on various Linux distributions and which handles early initialization of a cloud instance. Using ubuntu 20. You can place user data in a local file and pass it through the --user-data <user-data-file> parameter at instance Cloud-init discovers four types of configuration at runtime. It is the ability to run commands on initial boot that we’re going to tap into. Contribute on GitHub How to validate user data cloud config¶ The two most common issues with cloud config user data are: Incorrectly formatted YAML. By default, user data command and cloud-init directives run only during the first boot cycle when an EC2 instance is launched. cloud-init uses the network-config data to render the relevant network configuration on the system using either ifupdown or netplan depending on the Ubuntu release. A mime multi-part file allows your command to override how frequently user data is run in the cloud-init package. if I re-image the drive and let cloud-init run again, then go SSH in, the fingerprint is different. The instance-data. I am using Photon OS where cloud-init is already baked in. cloud-init status: You can check the status of cloud-init to see if it has completed successfully or encountered any errors. AL2023 also uses cloud-init to configure the ec2-user account. 4. cloud-init traite le vendor-data de la même manière que le user-data, avec quelques différences : Exécution contrôlée par l’utilisateur : L’utilisateur final peut désactiver l’exécution du vendor-data ou de parties spécifiques de celui-ci. 1 The meta-data and user-data files are valid and simple, just adding hostname to be specific. 注: デフォルトでは、cloud-init ディレクティブはインスタンスの起動時にのみ実行されます。ただし、このユーザーデータスクリプトを使用すると、cloud-init はインスタンスが再起動または再開するたびにパブリックキーをインスタンスに追加します。 Sep 19, 2022 · The key takeaway is, that the bare metal solution configures a “meta” cloud-init to launch autoinstall (which then generates a second cloud-init config for the host) and the method for a Raspberry Pi is using traditional, stand-alone, cloud-init without autoinstall because we’re editing the primary cloud-init boot device. x中利用Web控制台来手动创建虚拟机，并为其添加Cloud-init设备，使其支持云实例虚拟机在启动之前，可以手动注入虚拟机登录账号密码、远程登录公钥凭据，DN Oct 13, 2019 · You have to specify it in the cloud provider's data source or in metadata. user-data¶ Aug 15, 2022 · Cloud-init uses meta-data file to configure cloud based API configurations and setups, as well as user-data file to customize unique behavior OS while being installed. Aug 7, 2024 · The output of the user-data script is logged by cloud-init. Mar 14, 2022 · 介绍 cloud-init 和 Ubuntu Cloud Images. 5で確認） Format of instance-data. Executes cloud-init init --all-stages; cloud-config. Fetch the configuration: Once the datasource is identified, cloud-init fetches the configuration data from it. This can be in the form of: Meta-data instance platform data, such as the machine ID, hostname and network config. In most scenarios the easiest way will be to provide user data via the NoCloud data source. This discovery configuration can be delivered to cloud-init in different ways, but is different from the configurations that cloud-init uses to configure the instance at runtime. aliyun. Cloud-init will not run if there are kernel command-line directives to disable it, or if a file called /etc/cloud/cloud-init. Feb 16, 2024 · Cloud-init is an industry-standard tool for early initialization of cloud instances, offering a versatile method to manage system configuration with user data scripts. Cloud-init leverages metadata from your cloud platform to handle the deployment while taking custom user data to script the server setup to your needs. The syntax for both of these is an YAML and it has a rather structured way: Aug 5, 2022 · For example, one application that uses user data is the cloud-init system, which is an open-source package from Ubuntu that is available on various Linux distributions and which handles early initialization of a cloud instance. 3. I managed to get it running by executing terraform apply twice in the end, which I kind of discovered by accident. cloud_init_template in your VM module. This means that you can use common Amazon Machine Images (AMIs) for many use cases and configure them dynamically when you start an instance. Aug 1, 2016 · 关于metadata的相关信息， 也可以详细看EC2 文档 Instance Metadata and User Data. These take the same form, although vendor May 3, 2016 · 3 thoughts on “Configure OpenStack Instance at boot using cloud-init and user data” ung thu xuong says: May 16, 2016 at 04:53. When you deploy a new Linux server from an image, cloud-init gives you the option to set default user data. An example of a small subset of instance-data on a launched EC2 instance: instance-data can be inspected on a launched instance using cloud-init query. This assumes an SSH public key for the server-to-be-created's root user named root-ssh-key exists on the Hetzner Cloud Console under Security > SSH Keys. d and /etc/cloud/cloud. However, you can configure your user data command and cloud-init directives with a mime multi-part file. 対象環境. Determines availability of any data source and enables or disables cloud-init. Apr 10, 2024 · 次の図はユーザーデータ（User Data）とcloud-initの関係を表した図だ。 インスタンス作成時にユーザーデータを指定すると、OSイメージに組み込まれたcloud-initがユーザーデータの内容を実行することで、OSの初期設定ができる。 有关 cloud-init 允许的用户数据类型的信息，请参阅 cloud-init 文档的 User-Data 格式 部分。 元数据包括与特定数据源关联的数据，例如：元数据可以包括服务器名称和实例 ID。 Datasources are sources of configuration data for cloud-init that typically come from the user (i. The 25. User-data is passed to cloud-init by the user to the cloud provider at launch time, usually as a parameter in the CLI, template, or cloud portal used to launch an instance. Jan 4, 2022 · 摘要： 向云服务模式推进一步，使用 meta-data 来定义你的新主机开机参数. Fedora Cloud Edition, optimized for cloud infrastructure, integrates cloud-init to facilitate automated setups, making it an ideal choice for deploying scalable cloud Aug 21, 2024 · Please find the article "Guest Customization Using cloud-init" on how to customize a virtual machine using cloud-init metadata and user data using the vSphere web service API. Aug 22, 2024 · To learn more about cloud-init or troubleshoot it at a deeper level, you need to understand how it works. Cloud-init crawls this metadata and then caches and exposes this information as a standardised and versioned JSON object known as instance-data. instance-data is a JSON object which contains instance-specific variables in a standardized format. cloud-init支持所有主要的公有云服务商，也支持私有云基础架构和裸金属服务器安装。 云计算实例是从一个磁盘镜像和实例数据进行初始化的： Cloud metadata. 选择操作，选择实例状态，然后选择启动。 10. It is the user data that gives every cloud instance its personality and cloud-init is the tool that applies user data to your instances automatically. Cloud-init is a Linux package responsible for handling the early initialization of instances. If cloud-init is not available on the image, then you can still make use of the custom data #Cloud-init. A cloud, in it’s broadest sense, to run the VM Here’s how to debug cloud-init configurations: Checking cloud-init logs. cfg 文件和 cloud. User data(可选) Vendor data(可选) cloud-init可以在启动时运行来标识云计算厂商，从云上读取任何提供的元数据 - 簡單的 json 檔案，可以讓 user 的 script 簡單使用 - 避免消耗網路資源，因為 instance data 已經存在檔案系統了 - 利用 cloud init 已經對各個雲做的 meta-data 最佳化爬取 - 哪裡可以用(可以用 jinja 渲染 userdata 、 vendordata ) - userdata 的 script - `/etc/cloud. Canonical에서 구축한 오픈소스 솔루션이며 다양한 클라우드 제공자들이 이 Cloud-init 을 사용하고 있 May 7, 2025 · The images from the ubuntu and ubuntu-daily remotes are all cloud-init enabled. 8 # It should be passed as user-data when starting the instance. d 目录中添加指令。 或者，您的具体数据源可能需要您在文件中添加指令，如用户数据文件和元数据文件。 1 day ago · How to specify user or vendor data¶. txt and paste the following configuration. Each cloud provider presents unique configuration metadata to a launched cloud instance. Mar 30, 2022 · 认识Cloud-init Cloud-Init是一个用于初始化虚拟机的工具。使用Cloud-Init可以在虚拟机管理程序端配置网络设备、ssh 密钥以及用户信息等。当 VM 首次启动时，VM 中的 Cloud-Init程序将读取这些设置，并且执行。 Aug 22, 2024 · For this example, we use the Azure Cloud Shell. Mar 24, 2025 · cloud-init is absolute cancer. Ask questions in the #cloud-init IRC channel on Libera. 3 documentation Useful for testing during development. You can use any editor you wish. If cloud-init is not available on the image, then you can still make use of the custom data Dec 23, 2024 · Step 3: Create a Seed Image for Cloud-Init. pub into the user data ssh_authorized_keys section. To do this Under most circumstances users should stick to the NoCloud data source as it is the simplest cloud-init data source. It uses LXD containers to show more of cloud-init’s capabilities. This works well when used in a cloud infrastructure such as EC2 or OpenStack that can seed this data, but not so well when used for local VMs, or an out-of-the-box XenServer installation. Sep 9, 2024 · cloud-init. general. Jul 26, 2021 · The main objective is to add through cloud-init some customizations in order to modify them on boot with custom meta-data and user-data files. Prompt for user configuration on first boot. Requires the network to be up. It is supported across all major public cloud providers, including Oracle Cloud Infrastructure (see User Data). Fedora Cloud, Ubuntu Cloud) use some form of cloud-init to set instance/user metadata, such as hostnames and SSH keys. query Query standardized instance-data from the command line. Cloud-init is the industry standard multi-distribution method for cross-platform cloud instance initialization. Cloud-init is working fine when the data is actually accessible to cloud-init inside Photon OS. User data must be written in shell scripts or cloud-config directives using YAML syntax. yaml seed. To do this Apr 13, 2020 · For the error, it means you lack the custom_data = var. Aug 22, 2024 · For this example, we use the Azure Cloud Shell. iso ，或在使用 archiso 时执行 run_archiso -c 。 Oct 2, 2019 · Short answer:. 9 10 ca_certs: 11 # If present and set to True, the 'remove For more information about how cloud-init works natively in Azure and the supported Linux distros, see cloud-init overview. Jan 12, 2022 · The generator is the first one, and the simplest one: it will determine whether we are even trying to run cloud-init, and based on that, whether it should enable or disable the processing of data files. A user_data value set to a shell script will cause the given shell script to be ran during in the final stage of cloud-init (and I believe after the cloud-init directives in the one-time folder you reference). Open the scripts/add-ssh-web-app. It can also be used as a quick-start guide. Since you solve it, you can post your answer to close this question. The user-data and vendor-data configuration can be used to, for example, upgrade or install packages, add users, or run commands. cfg` 的資料 - 使用 ` Cloud-init discovers four types of configuration at runtime. 04 and cloud-init 20. Ubuntu 20. Copy the text below and paste it into the cloud_init Nov 15, 2023 · Cloud-init is an industry-standard, cross-platform tool that automates the process of initializing new servers. features list defined features analyze Devel tool: Analyze cloud-init logs and By default, user data scripts and cloud-init directives run only during the boot cycle when you first launch an instance. This causes cloud-init to query each data source on first boot. This creates a fully functional instance that is configured based on a series of inputs. log; Check cloud-init. See the cloud-init documentation for more information. cfg的配置写数据到文件里 - growpart // 扩展分区到硬盘的大小 ，默认对根分区执行。 Amazon Linux also uses cloud-init to perform initial configuration of the ec2-user account. target; cloud-init-local. cloud-init パッケージは、新しい Amazon Linux インスタンスが起動したときに、特定の側面を設定します。具体的には、お客様のプライベートキーでログインできるように、ec2-user の . 本文的上篇是 通过 PXE 自动化安装 Ubuntu Server ，在那里我介绍了 Ubuntu 提供的 autoinstall 方法，该方法利用 cloud-init 的支持确立了一套关于 user-data 的规范，并被用于无人值守安装。 $ xorriso -as genisoimage -output cloud-init. Follow announcements or ask a question on the cloud-init Discourse forum. collect-logs Collect and tar all cloud-init debug info. user-data This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. Cloud-init runs scripts to initialize and configure instances. Cloud-init. 引子. If I can get that working I can put all my meta-data and user-data files in a git repo, for tracking, then put the repo files on an internal nginx server I can link to. You can create your own cloud-init action files in /etc/cloud/cloud. When instances are launched in a cloud deployment cloud-init will search for a datasource to retrieve instance metadata. Amazon Linux uses the cloud-init actions found in /etc/cloud/cloud. service. It is supported across all major public cloud providers, provisioning systems for private cloud infrastructure, and bare-metal installations. You do not have to explicitly configure cloud-init to use the NoCloud datasource. The docs have a simple tutorial which does exactly this: it uses QEMU to run an image, and the qemu-system-x86_64 command line sets the image smbios info to specify where the Python webserver is ユーザーデータと cloud-init ディレクティブ. region }}' # Locally test that your template userdata provided to Aug 21, 2018 · 默认情况下，此生成器将启用cloud-init。 它不会启用cloud-init，如果： Generator: 当在systemd下引导时，将运行一个生成器，以确定cloud-init. To see the upgrade process in action, create a file named cloud_init_upgrade. After deploying a machine, connect to it and check the cloud-init logs located at /var/log/cloud-init. Check cloud-init-output. This section covers how to create and use a seed. AL2023 uses the cloud-init actions in /etc/cloud Nov 22, 2017 · On Oracle Cloud Infrastructure environments the provided Linux OS images, including Oracle Linux, support cloud-init initialization by providing the user_data entry in the metadata block of the This tutorial is recommended if you have some familiarity with cloud-init’s key concepts already. devel Run development tools. Jan 22, 2020 · User-data boot scripts and cloud-init¶ When booting a server it is possible to specify the contents of the user-data to be passed to that server. (i. Jan 2, 2024 · Customize cloud-init autoinstall user-data configuration file. 1 #cloud-config 2 # 3 # This is an example file to configure an instance's trusted CA certificates 4 # system-wide for SSL/TLS trust establishment when the instance boots for the 5 # first time. This document highlights the important parts, and explains the Azure specifics. Several Linux distributions nowadays have such a ‘cloud’ image: Ubuntu, Photon… A datasource, which is the configuration data provided by the user to the cloud-init process, and which defines how the resulting station will be configured. 1 release: * spanned about 3 months * had 23 contributors tests: assert cloud-init user-data cert is the only How to validate user data cloud config¶ The two most common issues with cloud config user data are: Incorrectly formatted YAML. The source of these configuration types is configurable with a discovery configuration. Linux example: Jun 4, 2023 · Disabling user data. Create users as documented in cloud-init inside the user-data section, # which means this single-user identity section may be removed. The NoCloud (opens new window) datasource allows the user to provide user-data, meta-data and network-config to the VM without running a network service (or even without having a network at all). log: This log file captures the output of the user-data script. This Linux example worked with cloud-config (see ref blog) part type instead of cloud-boothook which requires a cloud-init-per (see also bootcmd) call I couldn't test out (eg: cloud-init-pre always). cloud-init 是一个初始化云镜像的工具，同时也是一个自动化的配置工具。 Ubuntu Cloud Images 是由 Ubuntu 官方提供的用于在公有云上运行的系统镜像。它在首次启动时会运行 cloud-init 初始化系统。 如何制作自己的云镜像 系统准备 Using cloud-init you can pass in instance meta-data information, network configuration and user information. Cloud instances are initialized from a disk image and instance data: The cloud-init package is an open-source application built by Canonical that is used to bootstrap Linux images in a cloud computing environment, such as Amazon EC2. This process behaves differently depending on the format of the information it finds. dhclient-hook Run the dhclient hook to record network info. Make sure that the whole cloud-init file is copied correctly, especially the first line. Dec 4, 2015 · # The modules that run in the 'init' stage cloud_init_modules: - migrator - ubuntu-init-switch - seed_random - bootcmd - write-files - growpart - resizefs - set_hostname - update_hostname - update_etc_hosts - ca-certs - rsyslog - users-groups - ssh # The modules that run in the 'config' stage cloud_config_modules: # Emit the cloud config ready Dec 27, 2019 · So cloud-init will retrieve your user-data from an attached ISO image (from a file named user-data. Only requires the filesystems to be up. img user-data. To review, open the file in an editor that reveals hidden Unicode characters. As part of the user information you can also provide commands to be run. Apr 7, 2020 · cloud-init是一个支持多操作系统的软件包，用于处理云主机早期的初始化操作，当系统启动时，cloud-init可以在云的datasource中获取metadata（nova metadata服务或者config drive（config drive是一个特殊的文件系统，openstack会将metadata写到config drive，并在instance启动的时候挂载给instan May 1, 2023 · For example, in AWS, you can use the GetConsoleOutput API call to retrieve the console logs of a virtual machine, which may include cloud-init logs. When you launch an instance, you can use the user-data fields to pass actions to cloud-init. User Data Input Formats. yaml Mar 9, 2022 · For example, one application that uses user data is the cloud-init system, which is an open-source package from Ubuntu that is available on various Linux distributions and which handles early initialization of a cloud instance. status Report 通过使用 cloud-init，可以执行各种配置任务。. 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. Images from the images remote have cloud-init enabled variants using the /cloud suffix. 为了让 cloud-init 在启动时读取文件，我们需要将其重命名为 user-data，并在同一目录中创建一个名为 meta-data 的空文件。我们按 “e” 修改实时 ISO GRUB 菜单的第一个条目： Many premade cloud images (e. , user-data) or come from the cloud that created the configuration drive (i. You will pass this cloud-init script to your instance resource's user_data attribute. iso image is one of those methods. Only if NoCloud is not supported by the cloud-init implementation (e. May 1, 2025 · Use the --custom-data parameter to pass in your cloud-init config file. By default, this agent processes custom data. log: This log file provides detailed information about the cloud-init process, including the execution of the user-data script. Oct 14, 2014 · The cloud-init program that is available on recent distributions (only Ubuntu 14. Part 1: quick deployment. pdshpu qzni poemfg weuw nhqigq rukoek xtgxlq hdzcmeq nbhiu bbqr