{"id":1112,"date":"2026-11-02T14:06:08","date_gmt":"2026-11-02T14:06:08","guid":{"rendered":"https:\/\/www.vps.tc\/blog\/?p=1112"},"modified":"2026-11-02T09:27:17","modified_gmt":"2026-11-02T09:27:17","slug":"ubuntu-vs-debian-server-selection","status":"publish","type":"post","link":"https:\/\/www.vps.tc\/blog\/en\/ubuntu-vs-debian-server-selection\/","title":{"rendered":"Ubuntu vs Debian: Which Linux Distribution Fits Your Server?"},"content":{"rendered":"<div class=\"aiw-summary\" id=\"aiw-ozet\">\n<p class=\"aiw-summary-title\">Quick Summary &#8211; Ubuntu or Debian?<\/p>\n<p>For a server, the differences between Ubuntu and Debian matter most when matched against application compatibility and maintenance schedules. This comparison uses Ubuntu Server 24.04 LTS and Debian 13; it does not assume Ubuntu 24.04 is the newest LTS.<\/p>\n<ul>\n<li><strong>Application support<\/strong> \u2014 Choose Ubuntu if your vendor supports only specific Ubuntu releases; Debian may fit when it meets your package and maintenance requirements.<\/li>\n<li><strong>Support schedule<\/strong> \u2014 Ubuntu 24.04 LTS has standard security maintenance through 2029 and ESM under Ubuntu Pro through 2034, while Debian 13 has full support planned through 2028 and LTS through 2030.<\/li>\n<li><strong>Security coverage<\/strong> \u2014 Check repository components and Pro coverage on Ubuntu, and supported packages and architectures under Debian LTS.<\/li>\n<li><strong>Comparison baseline<\/strong> \u2014 Each hypothetical x86_64 KVM virtual machine receives 2 vCPUs, 4 GiB RAM, and a 40 GiB disk; these allocations are neither minimum requirements nor performance guarantees.<\/li>\n<li><strong>Packages and kernels<\/strong> \u2014 The baseline uses Ubuntu&#039;s GA Linux 6.8 and Debian&#039;s Linux 6.12 kernel lines, with no HWE, backports, or third-party repositories, and checks the Nginx version with apt-cache policy nginx.<\/li>\n<li><strong>Migration and recovery<\/strong> \u2014 Treat switching distributions as a migration rather than a routine release upgrade, and plan application validation on the new server plus a restore rehearsal from an independent backup.<\/li>\n<\/ul>\n<\/div>\n<p class=\"aiw-lead\">Lower RAM usage does not automatically make a distribution the better server choice. Ubuntu and Debian differ in application compatibility, security maintenance coverage, and upgrade schedules. When choosing between Ubuntu Server 24.04 LTS and Debian 13, I would match those requirements first, then measure performance separately using equal VPS resources and the same workload.<\/p>\n<div class=\"aiw-toc\" style=\"border:1px solid #dbe3ea;border-radius:8px;padding:16px 20px;margin:0 0 28px\">\n<p class=\"aiw-toc-head\"><strong>Table of Contents<\/strong><span class=\"aiw-toc-meta\"> \u00b7 17 min read<\/span><\/p>\n<ol style=\"margin:10px 0 0;padding-left:22px\">\n<li><a href=\"#same-vps-two-distributions-which-requirements-decide\">Same VPS, Two Distributions: Which Requirements Decide?<\/a><\/li>\n<li><a href=\"#support-lifecycles-go-beyond-version-numbers\">Support Lifecycles Go Beyond Version Numbers<\/a><\/li>\n<li><a href=\"#package-versions-or-the-application-support-matrix\">Package Versions or the Application Support Matrix?<\/a><\/li>\n<li><a href=\"#where-do-differences-appear-during-initial-setup\">Where Do Differences Appear During Initial Setup?<\/a><\/li>\n<li><a href=\"#do-not-rely-on-defaults-for-security-maintenance\">Do Not Rely on Defaults for Security Maintenance<\/a><\/li>\n<li><a href=\"#turn-performance-claims-into-measurable-questions\">Turn Performance Claims into Measurable Questions<\/a><\/li>\n<li><a href=\"#finalize-the-choice-with-an-upgrade-and-recovery-plan\">Finalize the Choice with an Upgrade and Recovery Plan<\/a><\/li>\n<li><a href=\"#check-before-choosing-your-vps-image\">Check Before Choosing Your VPS Image<\/a><\/li>\n<li><a href=\"#frequently-asked-questions\">Frequently Asked Questions<\/a><\/li>\n<li><a href=\"#sources\">Sources<\/a><\/li>\n<\/ol>\n<\/div>\n<h2 id=\"same-vps-two-distributions-which-requirements-decide\">Same VPS, Two Distributions: Which Requirements Decide?<\/h2>\n<p>If your application vendor supports only one distribution release, popularity should not change your decision. I start an Ubuntu vs Debian server comparison with four questions: supported releases, required package sources, maintenance ownership, and time for major upgrades. Requirements first.<\/p>\n<p>This hypothetical comparison uses two separate x86_64 VMs on the same KVM infrastructure, each with <strong>2 vCPU, 4 GiB RAM, and a 40 GiB virtual disk<\/strong>. These example allocations equalize resources; they are not minimum requirements or performance guarantees. <a href=\"https:\/\/www.vps.tc\/blog\/en\/arm-vs-x86-vps-which-architecture-should-you-choose\/\">ARM vs x86 VPS<\/a> is a separate choice; here, architecture stays fixed. Equal resources do not promise equal response times.<\/p>\n<p>The baseline is Ubuntu Server 24.04 LTS with the GA Linux 6.8 kernel line, and Debian 13 with Linux 6.12. HWE, backports, and third-party repositories are initially disabled; security and maintenance updates are assumed applied. Ubuntu uses <code>ubuntu.example.net<\/code> \/ <code>192.0.2.10<\/code>; Debian uses <code>debian.example.net<\/code> \/ <code>192.0.2.20<\/code>. These domains and IP addresses are reserved for documentation, not live internet targets.<\/p>\n<p>The workload serves <code>\/srv\/www\/example\/index.html<\/code> over static HTTP using Nginx from each distribution&#8217;s official repository. I do not assume package versions: in <code>apt-cache policy nginx<\/code> output, <code>Installed<\/code> identifies the installed version and <code>Candidate<\/code> the candidate selected under the current APT configuration. If Nginx is absent, expect <code>Installed: (none)<\/code>. This explains expected output, not a completed test; package revisions must be verified against official sources before publication.<\/p>\n<p>Maintenance capacity belongs in the decision. Canonical&#8217;s release-cycle documentation specifies five years of standard security maintenance for Ubuntu LTS packages in Main. Debian&#8217;s Trixie release page and LTS documentation distinguish regular support from long-term support; check package coverage separately. Neither support period removes the need to schedule updates and necessary reboots.<\/p>\n<p>A more popular distribution is not automatically a better fit, and fewer installed packages alone do not establish better security. I would record the application&#8217;s supported distribution release, required package source, and maintenance owner together. Add the maintenance window you can actually reserve for a major release upgrade-not just the date support ends.<\/p>\n<div class=\"aiw-callout aiw-callout-example\">\n<p class=\"aiw-callout-label\">Example<\/p>\n<p>In this hypothetical scenario, two KVM virtual machines named ubuntu.example.net and debian.example.net serve identical static content using Nginx from their official repositories. Giving each 2 vCPUs, 4 GiB RAM, and a 40 GiB disk only equalizes the comparison conditions. No completed tests or measured performance results are presented.<\/p>\n<\/div>\n<h2 id=\"support-lifecycles-go-beyond-version-numbers\">Support Lifecycles Go Beyond Version Numbers<\/h2>\n<p>A five-year VPS deployment does not receive five years of support on installation day. The clock starts at release. Our hypothetical Ubuntu Server 24.04 LTS and Debian 13 machines serve identical static Nginx content, but maintenance periods, package coverage and extension conditions differ.<\/p>\n<p>Canonical&#8217;s release-cycle table puts <strong>Ubuntu 24.04 LTS standard security maintenance through May 2029<\/strong>. Ubuntu Pro&#8217;s ESM can extend it through April 2034. That requires an eligible subscription, attaching the machine and enabling the relevant ESM services. Installing updates alone does not prepare it for extended maintenance.<\/p>\n<p>Canonical&#8217;s ESM documentation separates repository components: standard LTS security maintenance covers <code>Main<\/code> and <code>Restricted<\/code>; community maintenance for <code>Universe<\/code> carries no equivalent commitment. Pro&#8217;s <code>esm-infra<\/code> extends <code>Main<\/code> maintenance; <code>esm-apps<\/code> adds <code>Universe<\/code> security coverage. Neither guarantees every vulnerability in every package will be fixed. Do not assume equivalent <code>Multiverse<\/code> coverage. Free personal-use Pro covers up to five machines; check applicable subscription terms separately for company VPS deployments.<\/p>\n<p>Debian&#8217;s Trixie release page lists <strong>full support through August 9, 2028, and LTS through June 30, 2030<\/strong>. Responsibility passes to the Debian LTS team when LTS begins. Debian&#8217;s LTS documentation warns that architecture coverage can narrow and not all packages are supported. A distribution-wide deadline is not a guarantee for everything installed. These x86_64 machines use Debian&#8217;s <code>amd64<\/code> package architecture; recheck published architecture and package coverage at the LTS transition.<\/p>\n<p>I would not reduce the Ubuntu vs Debian server decision to total support years. For repository-installed Nginx and its dependencies, record their repository components and coverage during the planned maintenance period. Ubuntu&#8217;s GA Linux 6.8 and Debian&#8217;s Linux 6.12 kernel lines do not determine support duration: a higher number does not mean a later deadline.<\/p>\n<p>I would keep standard-support expiry, extended-maintenance conditions and the target upgrade date separate in the VPS inventory. If your five-year service plan exceeds remaining standard support, schedule an upgrade or budget for eligible extended maintenance before commissioning the server.<\/p>\n<div class=\"aiw-callout aiw-callout-warn\">\n<p class=\"aiw-callout-label\">Caution<\/p>\n<p>A release&#039;s support end date does not mean every installed package receives identical security coverage until then. Check Ubuntu&#039;s Main and Universe distinction and Pro terms, along with Debian LTS package and architecture coverage. Assess maintenance responsibility for third-party repositories separately.<\/p>\n<\/div>\n<h2 id=\"package-versions-or-the-application-support-matrix\">Package Versions or the Application Support Matrix?<\/h2>\n<p>A higher version number does not guarantee compatibility. I check the matrix first: supported distributions, required Nginx modules, and package maintainers. Our hypothetical static HTTP workload may need only the official repository package, not newer upstream features. A vendor&#8217;s distribution or module-version requirement takes priority.<\/p>\n<p>The baseline is Ubuntu Server 24.04 LTS and Debian 13: two x86_64 VMs on the same KVM infrastructure, each with 2 vCPU, 4 GiB RAM, and a 40 GiB virtual disk. These equal example allocations are neither minimum requirements nor performance guarantees. HWE, backports, and third-party repositories are disabled; security and maintenance updates are assumed applied. On each VM, use the sudo-enabled <code>admin<\/code> account:<\/p>\n<pre><code>hostname -f\ncat \/etc\/os-release\nuname -r\nsudo apt-get update\nLC_ALL=C apt-cache policy nginx<\/code><\/pre>\n<p>These commands have not been run here. With name resolution configured, expect <code>ubuntu.example.net<\/code> or <code>debian.example.net<\/code>; both are documentation names. <code>\/etc\/os-release<\/code> identifies the distribution; <code>uname -r<\/code> shows the running kernel. Expect Ubuntu&#8217;s GA Linux 6.8 or Debian&#8217;s Linux 6.12 line. Investigate deviations.<\/p>\n<p>After refreshing package lists, <code>Installed<\/code> shows the installed version, or <code>Installed: (none)<\/code> if absent; <code>Candidate<\/code> shows APT&#8217;s selection. Do not assume an Nginx version. Compare repository lines against existing <code>\/etc\/apt\/sources.list<\/code> and <code>\/etc\/apt\/sources.list.d\/<\/code> configuration; neither distribution requires one universal file layout.<\/p>\n<p>Ubuntu&#8217;s release-cycle documentation describes LTS maintenance; Debian&#8217;s Trixie page documents Debian 13. Ubuntu&#8217;s ESM documentation distinguishes security coverage by package component and support service. Distribution patches can bring security fixes into existing package lines, so an older upstream number alone does not establish vulnerability. Match package revisions against official security advisories and verify changing revisions before publication.<\/p>\n<p>PPAs, Debian backports, and vendor repositories are not interchangeable. A PPA adds publisher trust. Official Debian backports rebuild packages for stable under different maintenance arrangements; do not assume equivalent stable security support. Vendor repositories leave distribution support, signing keys, and update schedules with that vendor. Signatures do not guarantee compatibility. Before <a href=\"https:\/\/www.vps.tc\/blog\/en\/install-configure-nginx-on-ubuntu\/\">installing Nginx on Ubuntu<\/a>, I would write down the required module and who supplies its updates.<\/p>\n<h2 id=\"where-do-differences-appear-during-initial-setup\">Where Do Differences Appear During Initial Setup?<\/h2>\n<p>At first login, I would separate provider-image choices from distribution differences. Check access first. The <code>admin<\/code> account, <code>sudo<\/code> privileges and installed SSH keys can depend on the image, not simply Ubuntu versus Debian.<\/p>\n<p>This hypothetical setup uses Ubuntu Server 24.04 LTS and Debian 13, documented by Ubuntu&#8217;s official release-cycle page and Debian&#8217;s Trixie page respectively. Kernel baselines are GA Linux 6.8 and Linux 6.12; HWE, backports and third-party repositories are disabled. Security and maintenance updates are assumed applied.<\/p>\n<p>On identical KVM infrastructure, each x86_64 VM gets 2 vCPU, 4 GiB RAM and a 40 GiB virtual disk-not minimum requirements or performance guarantees. Ubuntu uses <code>ubuntu.example.net<\/code> \/ <code>192.0.2.10<\/code>; Debian uses <code>debian.example.net<\/code> \/ <code>192.0.2.20<\/code>. These documentation addresses are not live internet targets.<\/p>\n<p>Using key-based SSH and the sudo-capable <code>admin<\/code> account, run this block separately on each VM. It installs repository-provided Nginx and serves static HTTP from identical paths. <strong>Existing example-site files are overwritten; this is only for the specified fresh-install scenario.<\/strong><\/p>\n<pre><code>(\nset -eu\nhostname\nuname -r\nsudo -v\nsudo grep -R -E '^(deb |deb-src |Types:|URIs:|Suites:|Components:)' \\\n  \/etc\/apt\/sources.list \/etc\/apt\/sources.list.d\/ 2&gt;\/dev\/null || true\nsudo apt-get update\napt-cache policy nginx\nsudo apt-get install -y nginx curl\nsudo install -d -m 0755 \/srv\/www\/example\nprintf '%s\\n' '&lt;!doctype html&gt;&lt;html lang=\"tr\"&gt;&lt;meta charset=\"utf-8\"&gt;&lt;title&gt;\u00d6rnek&lt;\/title&gt;&lt;p&gt;Statik site haz\u0131r.&lt;\/p&gt;&lt;\/html&gt;' \\\n  | sudo tee \/srv\/www\/example\/index.html &gt;\/dev\/null\nsudo chmod 0644 \/srv\/www\/example\/index.html\nsudo tee \/etc\/nginx\/sites-available\/example.conf &gt;\/dev\/null &lt;&lt;'NGINX'\nserver {\n    listen 80;\n    server_name ubuntu.example.net debian.example.net;\n    root \/srv\/www\/example;\n    index index.html;\n\n    location \/ {\n        try_files $uri $uri\/ =404;\n    }\n}\nNGINX\nsudo ln -sfn \/etc\/nginx\/sites-available\/example.conf \\\n  \/etc\/nginx\/sites-enabled\/example.conf\nsudo nginx -t\nsudo systemctl enable --now nginx\nsudo systemctl reload nginx\ncurl --fail --show-error --silent --include \\\n  -H 'Host: ubuntu.example.net' http:\/\/127.0.0.1\/\n)<\/code><\/pre>\n<p>APT inspection checks traditional and deb822 source definitions without assuming one file. The <code>Candidate<\/code> in <code>apt-cache policy nginx<\/code> identifies the installation version; no revision is assumed. Both <code>server_name<\/code> values share the configuration. On Debian, you can use <code>debian.example.net<\/code> in the request&#8217;s <code>Host<\/code> header. The symlink enables the site; the default site can remain.<\/p>\n<p>Expect <code>nginx -t<\/code> to report <code>syntax is ok<\/code> and <code>test is successful<\/code>, then HTTP <code>200 OK<\/code> with <code>Statik site haz\u0131r.<\/code> in the HTML body. These are verification criteria, not measured results. Local success does not verify external access or the provider&#8217;s firewall.<\/p>\n<p><code>cloud-init<\/code> can generate SSH and network configuration from provider data. Inspect active configuration; don&#8217;t assume Netplan or another network manager from the distribution name. Keep the provider console ready before network changes. After changing SSH settings, verify key access in a second connection before closing the existing session.<\/p>\n<h2 id=\"do-not-rely-on-defaults-for-security-maintenance\">Do Not Rely on Defaults for Security Maintenance<\/h2>\n<p>Patched today does not mean automatically updated tomorrow. Check separately. On our hypothetical Ubuntu Server 24.04 LTS and Debian 13 KVM VMs, I would verify installation, automation and security-source coverage for <code>unattended-upgrades<\/code>. Neither distribution is inherently safer.<\/p>\n<p>Canonical&#8217;s release-cycle and ESM documentation distinguish standard maintenance from extended coverage; automation cannot give every package equal support. Check the official-repository Nginx candidate and origin with <code>apt-cache policy<\/code>, not its version alone.<\/p>\n<p>Run these checks on both VMs as the sudo-enabled <code>admin<\/code> user. The dry run shows allowed sources and upgrade decisions without upgrading packages. These are expected behaviors, not test results.<\/p>\n<pre><code>dpkg-query -W -f='${Status}\\n' unattended-upgrades\napt-cache policy nginx unattended-upgrades\nsudo cat \/etc\/apt\/apt.conf.d\/20auto-upgrades\napt-config dump | grep -E 'APT::Periodic|Unattended-Upgrade'\nsudo grep -R -nE '^(deb |Types:|URIs:|Suites:|Components:)' \/etc\/apt\/sources.list \/etc\/apt\/sources.list.d\/\nsystemctl is-enabled apt-daily.timer apt-daily-upgrade.timer\nsystemctl list-timers --all apt-daily.timer apt-daily-upgrade.timer\nsudo journalctl -u apt-daily-upgrade.service --since '7 days ago' --no-pager\nif command -v unattended-upgrade &gt;\/dev\/null 2&gt;&amp;1; then\n    sudo unattended-upgrade --dry-run --debug\nfi\nuname -r\ndpkg -l 'linux-image-*'\nif test -e \/run\/reboot-required; then\n    cat \/run\/reboot-required\nfi<\/code><\/pre>\n<p>Expect <code>install ok installed<\/code>. Missing <code>20auto-upgrades<\/code> does not prove automation is disabled: <code>apt-config dump<\/code> shows merged settings. For daily checks, expect <code>APT::Periodic::Update-Package-Lists<\/code> and <code>APT::Periodic::Unattended-Upgrade<\/code> both set to <code>1<\/code>. Installing the package does not replace configuration verification.<\/p>\n<p>Beyond <code>enabled<\/code>, inspect timers&#8217; next triggers and service logs. Verify allowed sources cover Ubuntu&#8217;s <code>noble-security<\/code> or Debian&#8217;s <code>trixie-security<\/code>. APT definitions can occupy <code>\/etc\/apt\/sources.list<\/code> or <code>\/etc\/apt\/sources.list.d\/<\/code>; the former&#8217;s absence alone is not a fault. Nor does an empty upgrade list prove broken automation.<\/p>\n<p>Reboots are separate. Ubuntu&#8217;s <code>\/run\/reboot-required<\/code> signals a need; its absence on Debian proves nothing about reboot requirements. Compare running and installed kernels: Ubuntu GA 6.8 and Debian 6.12 identify kernel lines, not current revisions. If installed, use <code>needrestart<\/code> to inspect services needing restarts too.<\/p>\n<p>Before SSH changes, verify provider-console access and keep your session open. After editing <code>\/etc\/ssh\/sshd_config.d\/10-admin.conf<\/code>, reload only after successful validation:<\/p>\n<pre><code>sudo \/usr\/sbin\/sshd -t &amp;&amp; sudo systemctl reload ssh\nsudo \/usr\/sbin\/sshd -T | grep -E '^(pubkeyauthentication|passwordauthentication|permitrootlogin) '<\/code><\/pre>\n<p><code>sshd -t<\/code> is silent on success, but does not guarantee access. The second command shows general effective settings; <code>Match<\/code> rules can vary by connection. Before closing the existing session, verify key-based <code>admin<\/code> login and <code>sudo<\/code> access from a second terminal.<\/p>\n<div class=\"aiw-callout aiw-callout-tip\">\n<p class=\"aiw-callout-label\">Tip<\/p>\n<p>The distribution name does not establish a provider image&#039;s network manager or SSH defaults. Before changing SSH configuration, verify console access; after editing, check syntax with sudo sshd -t. Test a second connection without closing your existing session.<\/p>\n<\/div>\n<h2 id=\"turn-performance-claims-into-measurable-questions\">Turn Performance Claims into Measurable Questions<\/h2>\n<p>Lower RAM usage does not mean faster HTTP responses. I would narrow the Ubuntu vs Debian server question to latency with identical static content and Nginx settings. Keep idle memory, service count, HTTP latency and CPU steal separate. No single score.<\/p>\n<p>The hypothetical setup uses two x86_64 VMs on the same KVM infrastructure: each gets 2 vCPU, 4 GiB RAM and 40 GiB disk, not requirements or guarantees. Ubuntu Server 24.04 LTS uses GA Linux 6.8; Debian 13 uses Linux 6.12. HWE, backports and third-party repositories are disabled; maintenance and security updates are applied. Ubuntu&#8217;s release-cycle page and Debian&#8217;s Trixie page establish release context, not performance superiority.<\/p>\n<p>Retain <code>ubuntu.example.net<\/code> \/ <code>192.0.2.10<\/code> and <code>debian.example.net<\/code> \/ <code>192.0.2.20<\/code>: documentation addresses, not public targets. Use official-repository Nginx. Match <code>\/srv\/www\/example\/index.html<\/code> and <code>\/etc\/nginx\/sites-available\/example.conf<\/code>, except server names; verify the <code>\/etc\/nginx\/sites-enabled\/example.conf<\/code> symlink and global settings. Record package revisions rather than assuming them.<\/p>\n<p>This untested example assumes sudo-capable <code>admin<\/code>, correct hostnames and Nginx on TCP 80. <strong>Remove the preserved Turkish prose line before execution; it is not a shell comment.<\/strong> Its meaning: exclude the first request and warm the file cache.<\/p>\n<pre><code>hostname -f\nuname -r\napt-cache policy nginx\nsha256sum \/srv\/www\/example\/index.html\nsudo nginx -T\nfree -m\nsystemctl list-units --type=service --state=running --no-legend --no-pager\nsystemctl list-units --type=service --state=running --no-legend --no-pager | wc -l\n\nhost=$(hostname -f)\n\u0130lk iste\u011fi \u00f6l\u00e7\u00fcme katmay\u0131n; dosya \u00f6nbelle\u011fini \u0131s\u0131t\u0131n.\ncurl --noproxy '*' --fail --silent --show-error --resolve \"${host}:80:127.0.0.1\" -o \/dev\/null \"http:\/\/${host}\/\"\n\nvmstat 1 25 &gt; \/tmp\/vmstat-example.txt &amp;\nvmstat_pid=$!\nsleep 1\nfor i in $(seq 1 20); do\n  curl --noproxy '*' --fail --silent --show-error --resolve \"${host}:80:127.0.0.1\" -o \/dev\/null -w 'code=%{http_code} ttfb=%{time_starttransfer} total=%{time_total}\\n' \"http:\/\/${host}\/\"\n  sleep 1\ndone\nwait \"$vmstat_pid\"\ncat \/tmp\/vmstat-example.txt<\/code><\/pre>\n<p>Expect matching <code>sha256sum<\/code> hashes. In <code>free -m<\/code>, examine <code>available<\/code> alongside <code>free<\/code>; caches occupy memory too. Service count alone cannot explain consumption. Expect HTTP <code>200<\/code>, with <code>ttfb<\/code> and <code>total<\/code> in seconds. Report failures separately from successful-response latency distributions.<\/p>\n<p>The first <code>vmstat<\/code> CPU report averages since boot; subsequent reports cover one-second intervals. <code>st<\/code> measures CPU time stolen by the hypervisor, potentially indicating shared-host contention. Twenty sequential requests are not a capacity test. Loopback excludes internet latency; the client shares the VM&#8217;s CPU.<\/p>\n<p>I would repeat warm-cache runs at different times, comparing medians and distributions without declaring a winner from unperformed tests. Package versions, kernels and host load can confound distribution comparisons. For longer observation, use <a href=\"https:\/\/www.vps.tc\/blog\/en\/prometheus-grafana-setup-vps-monitoring\/\">How to Monitor a VPS with Prometheus and Grafana<\/a>; check matching <code>st<\/code> intervals when latency spikes.<\/p>\n<div class=\"aiw-callout aiw-callout-warn\">\n<p class=\"aiw-callout-label\">Caution<\/p>\n<p>Do not pick a distribution winner from the duration of one HTTP request. Cache state, the Nginx package version, the network path, and CPU contention on the shared host can affect measurements. Record HTTP latency, RAM usage, and CPU steal separately across repeated measurements.<\/p>\n<\/div>\n<h2 id=\"finalize-the-choice-with-an-upgrade-and-recovery-plan\">Finalize the Choice with an Upgrade and Recovery Plan<\/h2>\n<p>Easy installation proves little. In this hypothetical VPS scenario, I would choose Ubuntu Server 24.04 LTS if vendor support or your toolchain requires it. Debian 13 fits if its official repositories meet application needs and your team can manage release transitions. Choose maintainable routines, not habit. Document requirements: stepping outside the support matrix can limit vendor assistance.<\/p>\n<p>Ubuntu&#8217;s official release-cycle documentation describes sequential LTS upgrades. Move from Ubuntu Server 24.04 LTS to the next LTS only when the supported path opens and application compatibility is verified. <code>do-release-upgrade<\/code> upgrades the distribution release, not merely packages; do not launch it experimentally on the existing VM. Arrange provider-console access, free disk space and a maintenance window first. An open SSH session is no recovery plan.<\/p>\n<p>Debian 13&#8217;s official release page points to its release notes. For Debian 12 to 13, follow their preparation, APT source changes and upgrade sequence; for this Debian 13 VM&#8217;s next upgrade, consult the target release&#8217;s notes. Inspect <code>\/etc\/apt\/sources.list<\/code> and existing configuration under <code>\/etc\/apt\/sources.list.d\/<\/code>. Changing codenames alone is insufficient.<\/p>\n<p>Switching distributions means migrating content and configuration to a new VM, not replacing Ubuntu repositories with Debian repositories. Keep both x86_64 VMs on the same KVM infrastructure: each gets 2 vCPU, 4 GiB RAM and a 40 GiB virtual disk, not performance guarantees. Retain Ubuntu&#8217;s GA Linux 6.8 and Debian&#8217;s Linux 6.12 baselines; leave HWE, backports and third-party repositories disabled.<\/p>\n<p>I would set rollback triggers beforehand: stop migration if key-based SSH for <code>admin<\/code> or Nginx static HTTP serving fails. A <a href=\"https:\/\/www.vps.tc\/blog\/en\/what-is-a-vps-snapshot-point-in-time-backups\/\">VPS snapshot<\/a> can speed rollback but cannot replace a provider-independent backup. Back up web content, Nginx and SSH settings, and automatic-update configuration together.<\/p>\n<p>On the chosen provider image, <code>apt-cache policy nginx<\/code> shows installed and candidate versions; assume no package revision. Rehearse recovery from the independent backup. On that restored system, <code>sudo nginx -t<\/code> should report successful syntax and configuration checks-not proof of HTTP delivery. Before removing the old VM, verify administrative access and an HTTP response matching <code>\/srv\/www\/example\/index.html<\/code>.<\/p>\n<h2 id=\"check-before-choosing-your-vps-image\">Check Before Choosing Your VPS Image<\/h2>\n<ul class=\"aiw-checklist\">\n<li>Verify the distribution, release, and x86_64 architecture against your application&#039;s support matrix.<\/li>\n<li>Match the server&#039;s planned lifetime to standard support and extended maintenance dates.<\/li>\n<li>Check the actual image, running kernel, and package candidate using \/etc\/os-release, uname -r, and apt-cache policy nginx.<\/li>\n<li>Inspect existing sources in \/etc\/apt\/sources.list and \/etc\/apt\/sources.list.d\/, where present, and identify third-party repositories.<\/li>\n<li>Check unattended-upgrades installation, allowed update sources, APT timers, and reboot requirements separately.<\/li>\n<li>Verify provider console access before changing SSH, and test a new connection without closing the existing session.<\/li>\n<li>Complete application acceptance tests on your chosen image and rehearse restoration from an independent backup.<\/li>\n<\/ul>\n<div class=\"aiw-cta\">\n<p>Before committing to a VPS image, install and validate your application on the candidate distribution. Make your first acceptance criterion a service you can restore from an independent backup, not just a web page that loads.<\/p>\n<p class=\"aiw-cta-action\"><a href=\"https:\/\/www.vps.tc\/en\/vps\">Explore VPS plans<\/a><\/p>\n<\/div>\n<h2 id=\"frequently-asked-questions\">Frequently Asked Questions<\/h2>\n<div class=\"aiw-faq\">\n<details class=\"aiw-faq-item\" open>\n<summary>Should I choose Ubuntu or Debian for a VPS?<\/summary>\n<p>If your application vendor supports a specific Ubuntu LTS release, prioritize that requirement. Debian 13 is a suitable alternative when its official repositories contain the packages you need and its maintenance schedule fits. Base the decision on application compatibility, your team&#039;s administration habits, security coverage, and the server&#039;s planned lifetime rather than popularity.<\/p>\n<\/details>\n<details class=\"aiw-faq-item\">\n<summary>How long are Ubuntu 24.04 LTS and Debian 13 supported?<\/summary>\n<p>Ubuntu 24.04 LTS receives standard security maintenance through 2029, with ESM under Ubuntu Pro extending through 2034. Debian 13 has full support planned through 2028, followed by LTS through 2030. These dates do not guarantee unconditional coverage for every package: check Ubuntu repository components and subscription terms, plus Debian LTS package and architecture coverage.<\/p>\n<\/details>\n<details class=\"aiw-faq-item\">\n<summary>Does Debian use less RAM than Ubuntu Server?<\/summary>\n<p>You cannot establish that Debian uses less RAM without accounting for installed services and provider image differences. Comparing a minimal image against one containing extra agents does not isolate the distribution&#039;s effect. With equal resources, inspect memory usage and running services using free and systemctl; lower idle consumption alone does not establish better application performance.<\/p>\n<\/details>\n<details class=\"aiw-faq-item\">\n<summary>Is Ubuntu or Debian more secure?<\/summary>\n<p>Neither distribution is unconditionally more secure. Security depends on release support, package maintenance coverage, exposed services, and applied updates. Installing an automatic update package is not enough: check active timers, permitted update sources, and reboot requirements. Use key-based SSH authentication and limited privileges rather than treating the distribution choice as a substitute for ongoing administration.<\/p>\n<\/details>\n<details class=\"aiw-faq-item\">\n<summary>Will older Debian packages cause application problems?<\/summary>\n<p>A lower upstream version number does not by itself mean a package lacks security fixes; distributions can backport fixes into existing versions. Nor is every Debian 13 package older than its Ubuntu 24.04 counterpart. Check required features against your application&#039;s support matrix, inspect package candidates with apt-cache policy, and assess maintenance responsibility before adding another repository.<\/p>\n<\/details>\n<details class=\"aiw-faq-item\">\n<summary>Can I move from Ubuntu to Debian without losing data?<\/summary>\n<p>You can preserve data during migration, but moving from Ubuntu to Debian is not a normal distribution release upgrade. Prepare a new Debian virtual machine rather than trying to convert the system by changing APT sources. Validate the application and dependencies, transfer files and any databases using suitable methods, and test both independent backups and a rollback plan before switching traffic.<\/p>\n<\/details>\n<\/div>\n<h2 id=\"sources\">Sources<\/h2>\n<ul class=\"aiw-sources\">\n<li><a href=\"https:\/\/ubuntu.com\/about\/release-cycle\" target=\"_blank\" rel=\"noopener\">Ubuntu &#8211; Release Cycle and Support Periods<\/a> \u2014 ubuntu.com<\/li>\n<li><a href=\"https:\/\/ubuntu.com\/security\/esm\" target=\"_blank\" rel=\"noopener\">Ubuntu &#8211; ESM Security Coverage and Ubuntu Pro<\/a> \u2014 ubuntu.com<\/li>\n<li><a href=\"https:\/\/www.debian.org\/releases\/trixie\/\" target=\"_blank\" rel=\"noopener\">Debian 13 Trixie &#8211; Release Information and Support Schedule<\/a> \u2014 debian.org<\/li>\n<li><a href=\"https:\/\/www.debian.org\/lts\/\" target=\"_blank\" rel=\"noopener\">Debian &#8211; Long Term Support and Coverage Limits<\/a> \u2014 debian.org<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Choosing between Ubuntu Server 24.04 LTS and Debian 13 means weighing application support, security coverage, and upgrade schedules together. A hypothetical VPS scenario with equal resources makes the decision criteria clearer without declaring a performance winner from tests that were never run.<\/p>\n","protected":false},"author":2,"featured_media":1110,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-1112","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-linux"],"lang":"en","translations":{"en":1112,"tr":1111},"pll_sync_post":[],"_links":{"self":[{"href":"https:\/\/www.vps.tc\/blog\/wp-json\/wp\/v2\/posts\/1112","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vps.tc\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vps.tc\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vps.tc\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vps.tc\/blog\/wp-json\/wp\/v2\/comments?post=1112"}],"version-history":[{"count":1,"href":"https:\/\/www.vps.tc\/blog\/wp-json\/wp\/v2\/posts\/1112\/revisions"}],"predecessor-version":[{"id":1114,"href":"https:\/\/www.vps.tc\/blog\/wp-json\/wp\/v2\/posts\/1112\/revisions\/1114"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.vps.tc\/blog\/wp-json\/wp\/v2\/media\/1110"}],"wp:attachment":[{"href":"https:\/\/www.vps.tc\/blog\/wp-json\/wp\/v2\/media?parent=1112"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vps.tc\/blog\/wp-json\/wp\/v2\/categories?post=1112"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vps.tc\/blog\/wp-json\/wp\/v2\/tags?post=1112"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}