{"id":233374,"date":"2026-04-20T11:01:00","date_gmt":"2026-04-20T15:01:00","guid":{"rendered":"https:\/\/news-you-need.com\/index.php\/2026\/04\/20\/ubuntu-26-04-will-block-your-upgrade-on-thursday-if-your-containers-still-use-cgroup-v1\/"},"modified":"2026-04-20T11:30:12","modified_gmt":"2026-04-20T15:30:12","slug":"ubuntu-26-04-will-block-your-upgrade-on-thursday-if-your-containers-still-use-cgroup-v1","status":"publish","type":"post","link":"https:\/\/news-you-need.com\/index.php\/2026\/04\/20\/ubuntu-26-04-will-block-your-upgrade-on-thursday-if-your-containers-still-use-cgroup-v1\/","title":{"rendered":"Ubuntu 26.04 will block your upgrade on Thursday if your containers still use cgroup v1"},"content":{"rendered":"<p><a href=\"https:\/\/www.xda-developers.com\/ubuntu-2604-will-block-your-upgrade-on-thursday-if-your-containers-still-use-cgroup-v1\/\">Ubuntu 26.04 will block your upgrade on Thursday if your containers still use cgroup v1<\/a><\/p>\n<p><a href=\"https:\/\/www.xda-developers.com\/ubuntu-2604-will-block-your-upgrade-on-thursday-if-your-containers-still-use-cgroup-v1\/\">https:\/\/www.xda-developers.com\/ubuntu-2604-will-block-your-upgrade-on-thursday-if-your-containers-still-use-cgroup-v1\/<\/a><\/p>\n<p>Publish Date: <a href=\"publish_date]\">2026-04-20 11:01:00<\/a><\/p>\n<p>Source Domain: <a href=\"www.xda-developers.com\">www.xda-developers.com<\/a><\/p>\n<h3 class=\"title icon i-list\">Summary<\/h3>\n<ul>\n<li>\n                                        Ubuntu 26.04 will refuse to upgrade systems using cgroup v1; migrate containers to cgroup v2 first.\n                        <\/li>\n<li>\n                                        Containers won&#8217;t run on hosts booted with cgroup v1; older runtimes (Docker\n                        <\/li>\n<li>\n                                        No gradual wind-down, the cutover is immediate\u2014check and migrate containers before April 23 upgrade.\n                        <\/li>\n<\/ul>\n<p>There are a lot of reasons why I like Linux, and one of my faves is how it respects legacy hardware. We&#8217;ve only just seen the Linux kernel officially drop support for the i486, which was released all the way back in 1989, and only because Linus believes nobody is running Linux on an i486 these days.<\/p>\n<p>However, Ubuntu&#8217;s upcoming 26.04 update this coming Thursday is ditching some legacy software, and it&#8217;s not going to be a slow wind-down of older apps. Long story short, if your Ubuntu installation uses cgroup v1 for its containers, you won&#8217;t get the 26.04 update unless you manually migrate your container runtime to cgroup v2 before upgrading.<\/p>\n<p>                    <span data-field=\"label\" class=\"article-card-label\">Related<\/span><\/p>\n<h5 class=\"display-card-title \">\n<p>\t\t\tUbuntu 26.04 now needs more RAM than Windows 11, which says more about Microsoft than Canonical<\/p>\n<\/h5>\n<p class=\"display-card-excerpt\">There&#8217;s more under the&#8230;<\/p>\n<p><a href=\"https:\/\/www.xda-developers.com\/ubuntu-2604-will-block-your-upgrade-on-thursday-if-your-containers-still-use-cgroup-v1\/\">Source<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ubuntu 26.04 will block your upgrade on Thursday if your containers still use cgroup v1&#8230;<\/p>\n","protected":false},"author":1,"featured_media":233375,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/static0.xdaimages.com\/wordpress\/wp-content\/uploads\/wm\/2026\/01\/ubuntu-pro-6.jpg?w=1600&h=900&fit=crop","fifu_image_alt":"","footnotes":""},"categories":[48],"tags":[71,79],"class_list":["post-233374","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-linux","tag-linux","tag-ubuntu"],"_links":{"self":[{"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/posts\/233374"}],"collection":[{"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/comments?post=233374"}],"version-history":[{"count":1,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/posts\/233374\/revisions"}],"predecessor-version":[{"id":233376,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/posts\/233374\/revisions\/233376"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/media\/233375"}],"wp:attachment":[{"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/media?parent=233374"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/categories?post=233374"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/news-you-need.com\/index.php\/wp-json\/wp\/v2\/tags?post=233374"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}