[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["很难理解","hardToUnderstand","thumb-down"],["信息或示例代码不正确","incorrectInformationOrSampleCode","thumb-down"],["没有我需要的信息/示例","missingTheInformationSamplesINeed","thumb-down"],["翻译问题","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["最后更新时间 (UTC)：2025-09-03。"],[[["\u003cp\u003eAn OS version progresses through two primary lifecycle stages: Mainstream Support/General Availability (GA) and Deprecated/End of Support (EOS), with the EOS stage potentially including an Extended Support phase.\u003c/p\u003e\n"],["\u003cp\u003eDuring the GA stage, image providers create new OS images and image families, frequently applying critical security or bug fixes, and when an update occurs a new image is created while the old is deprecated, and the image family now points to the latest version.\u003c/p\u003e\n"],["\u003cp\u003eWhen an OS reaches the Deprecated/EOS stage, image updates cease, and while the deprecated OS images may remain usable, users become responsible for acquiring updates, with the latest image in the image family being deleted or deprecated, and image families become unusable; Windows is an exception to this, where all OS images are deleted at EOS.\u003c/p\u003e\n"],["\u003cp\u003eCertain OS versions offer an Extended Support phase, providing paid maintenance packages such as Red Hat's Extended Lifecycle Support (ELS), Ubuntu Pro's Extended Security Maintenance (ESM), or Windows' Extended Security Updates.\u003c/p\u003e\n"],["\u003cp\u003eOperating systems that reach the End of Lifecycle (EOL) stage have their latest images deprecated or deleted, and VMs using EOL OS versions can no longer download or install software updates, while continued compatibility and support are not guaranteed.\u003c/p\u003e\n"]]],[],null,["# Operating systems lifecycle\n\nLinux Windows\n\n*** ** * ** ***\n\nThis document describes the lifecycle of an operating system (OS) version,\nstarting from its creation through to its end of lifecycle (EOL) stage.\n\nAn OS version transitions through two main stages as part of its\nlifecycle:\n\n1. Mainstream support or general availability (GA)\n2. Deprecated or end of support (EOS): which is further divided into the\n following two sub-stages:\n\n 1. Extended support\n 2. End of lifecycle (EOL)\n\nFor some OS versions, after they are marked deprecated, they might also have an\nextended support phase before they reach full EOL.\n\nThe following sections outline the lifecycle stages of an OS version on\nCompute Engine.\n\nMainstream support or general availability (GA)\n-----------------------------------------------\n\nIn this stage the following processes take place:\n\n1. With the introduction of a new OS version, the OS image provider creates a new OS image and assigns a name by using the naming convention for that OS distribution. For example, `debian-11-bullseye-v20230801`.\n2. The image provider then creates a new image family. For example,\n `debian-11.`\n\n *Image families* help you manage OS images in your\n project by grouping related images together, so that you can roll forward and\n roll back between specific OS image versions. For more information, see\n [Image families best practices](/compute/docs/images/image-families-best-practices).\n\n All calls to the image family references this recently created OS image.\n For example, if you specify an image family during VM creation by\n using the `--image-family` flag with the appropriate `--image-project`, then\n the latest version of the image is used.\n3. Occasionally, the image provider applies critical security or bug\n fixes, that are sent by the OS provider, to the OS image. In these updates,\n new features might be introduced.\n When an update is sent, the following takes place:\n\n - The current OS image is updated and a new name is generated. For example, the `debian-11-bullseye-v20230801` with the updates becomes `debian-11-bullseye-v20230901.`\n - The `debian-11` image family now points to the new `debian-11-bullseye-v20230901` OS image.\n - The previous OS image (`debian-11-bullseye-v20230801`) is marked `deprecated`.\n\nDeprecated or End of Support (EOS)\n----------------------------------\n\nAt some point, each OS version reaches the deprecation phase. For OS version\ndeprecation dates, see [Operating system details](/compute/docs/images/os-details).\n\nDeprecated OS versions can either be in an extended supported or end of\nlifecycle phase.\n\nIn this stage, OS providers stop providing image updates and the OS images are\nmarked deprecated. You might still be able to use these OS images, but you are\nresponsible for acquiring updates, which are subject to availability from the\nOS distribution, vendor, or open source community.\n\nWhen an OS version reaches EOS, the following takes place:\n\n- The latest image in the image family is either deleted or marked deprecated.\n- You can no longer use the image family. However, you can still\n use some or all of the OS images by referencing them directly with the\n exception of Windows where all OS images are deleted at EOS.\n\n To create a VM from a deprecated image, you must use the\n gcloud CLI or REST. When specifying the image,\n you must use the `--image` flag because image families don't point to\n deprecated images. For more information about creating VMs, see\n [Create a VM instance from a public image](/compute/docs/instances/create-start-instance#publicimage).\n- When an OS version reaches or goes past the extended lifecycle stage, Google\n doesn't guarantee feature compatibility with new machine families or CPU\n platforms, to these deprecated versions.\n\n All VMs that use OS images that belong to this EOS OS version continue to work on\n Compute Engine and are still eligible for\n [Google Cloud support](/compute/docs/images/support-maintenance-policy#support-scope)\n beyond their EOS date.\n However, if any issues with the VM is identified to be associated with\n the deprecated OS version, Google might not be able to resolve the issue\n as OS provider support is no longer available.\n\nDeprecated OS versions can either be in an extended supported phase or end of\nlifecycle.\n\n### Extended support\n\nFor some operating systems, when they reach the deprecation phase,\nOS distributors provide a maintenance, extended or long-term paid package that\ncan be applied to your OS:\n\n- For Red Hat Enterprise Linux (RHEL) OS: Maintenance support, Extended life phase, Extended Lifecycle support ELS (Add-On), or Extended Update Support (EUS)\n- For Rocky Linux: Long Term Support can be [purchased from CIQ](https://ciq.com/products/rocky-linux/)\n- For SUSE Linux Enterprise Server (SLES) OS: Long Term Service Pack Support, Extended Service Pack Overlap Support (ESPOS)\n- For Ubuntu Pro OS: Extended Security Maintenance (ESM)\n- For Windows OS: Extended Security Updates\n\nFor more details on these extended lifecycle packages, see the documentation for\nthe OS provider.\n\n### End of lifecycle (EOL)\n\nFor operating systems that have reached the end of the extended support period,\nor operating systems that don't support an extended support period, the\nfollowing takes place:\n\n- The latest image in the image family is marked deprecated, or is deleted\n from Google Cloud.\n\n- The guest environment software provided by Google won't be\n updated for EOL OS versions, and repositories are no longer updated or maintained.\n\n- For existing VMs that use EOL OS versions, the following takes place:\n\n - The VM can't download or install software packages or updates from the OS vendor and security updates are no longer available. This occurs because content from the OS vendor might no longer be available from the existing channels as the configured software repository infrastructure from the OS vendor might be turned down or archived.\n - The VM continues to run but continued compatibility is not guaranteed. Active support might not be available from the OS vendor or Google. Google can provide options for migration or upgrades to newer OS versions.\n\nOS image naming convention, update schedule, and deprecation policy\n-------------------------------------------------------------------\n\nThe following table outlines the naming convention for OS images\nand image families, the update schedule, and the applicable EOS\npolicy.\n\n### Definitions\n\nThe following notations are used in the table:\n\n- `V` is the numeric version for the OS. For example `RHEL-7` where `7` is the numeric version\n- `R` is the release string sometimes referred to as the development codename for the OS. For example, `debian-12-bookworm-v20240213` where `bookworm` is the release string. *Release strings only apply to Debian and Ubuntu OS images*.\n- `N` is the numeric build number. *Build numbers only apply to\n Container-Optimized OS and Fedora CoreOS*.\n- `YYYYMMDD` is the Year/Month/Day that identifies the date that the OS image was built or published. For some OS, the date is preceded by a lowercase `v`. For example, `vYYYYMMDD`.\n\nWhat's next\n-----------\n\n- Learn more about the [operating systems](/compute/docs/images/os-details) that are available on Compute Engine."]]
