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        <title>Knowledge base</title>
        <description>Information about vpsFree.org, manuals and FAQs.</description>
        <link>https://kb.vpsfree.org/</link>
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       <dc:date>2026-07-20T13:35:06+00:00</dc:date>
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    <item rdf:about="https://kb.vpsfree.org/information/kb?rev=1783889483&amp;do=diff">
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        <dc:date>2026-07-12T20:51:23+00:00</dc:date>
        <dc:creator>aither (aither@undisclosed.example.com)</dc:creator>
        <title>Contributing to the Knowledge Base - Expand the contribution guide and document the vpsAdmin workflow</title>
        <link>https://kb.vpsfree.org/information/kb?rev=1783889483&amp;do=diff</link>
        <description>Contributing to the Knowledge Base

Any vpsFree.cz member can contribute to the Knowledge Base. Below the login form, select “Log in with other services”, click vpsAdmin, and enter your vpsAdmin credentials.

Translations and page linking

Our Knowledge Base is available in two languages,</description>
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        <dc:date>2026-07-12T20:30:51+00:00</dc:date>
        <dc:creator>aither (aither@undisclosed.example.com)</dc:creator>
        <title>VPS recovery - Annotate vpsAdmin navigation paths and update interface labels</title>
        <link>https://kb.vpsfree.org/manuals/vps/vpsadminos/recovery?rev=1783888251&amp;do=diff</link>
        <description>VPS recovery

vpsAdmin allows members to solve most of the problems causing the VPS to not
start or when it does not respond over network. VPS can be broken e.g. during
system upgrade, modification or configuration.

Our support can of course help you recover your VPS,
but we try to give our members tools to be able to help themselves if they can.</description>
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        <dc:date>2026-07-12T20:30:51+00:00</dc:date>
        <dc:creator>aither (aither@undisclosed.example.com)</dc:creator>
        <title>User account management - Annotate vpsAdmin navigation paths and update interface labels</title>
        <link>https://kb.vpsfree.org/manuals/vps/users?rev=1783888251&amp;do=diff</link>
        <description>User account management

E-mail addresses

vpsAdmin allows users to set one primary e-mail address belonging to the
account owner -- a member of our association. This address must be set and
can only be a single address. In addition to the primary e-mail address, you
can set different addresses for certain contact roles, such as an accountant
or system administrator. These settings can be changed in user profile details
(</description>
    </item>
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        <dc:date>2026-07-12T20:30:51+00:00</dc:date>
        <dc:creator>aither (aither@undisclosed.example.com)</dc:creator>
        <title>User Data - Annotate vpsAdmin navigation paths and update interface labels</title>
        <link>https://kb.vpsfree.org/manuals/vps/userdata?rev=1783888251&amp;do=diff</link>
        <description>User Data

When creating or reinstalling a VPS, vpsAdmin can upload a script or configuration for cloud-init into the VPS. This script or configuration is applied on the first startup of the VPS. We support these formats for the initial configuration:

	*  
	*</description>
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    <item rdf:about="https://kb.vpsfree.org/manuals/vps/traffic?rev=1783888250&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2026-07-12T20:30:50+00:00</dc:date>
        <dc:creator>aither (aither@undisclosed.example.com)</dc:creator>
        <title>Data Transfers - Annotate vpsAdmin navigation paths and update interface labels</title>
        <link>https://kb.vpsfree.org/manuals/vps/traffic?rev=1783888250&amp;do=diff</link>
        <description>Data Transfers

Monthly Overviews

In the “Networking -&gt; List monthly traffic” menu, we can check the monthly
overviews of transferred data. 



Under default settings, transfers for all VPS for the current month are displayed.

Using a filter form, it is possible to only display transfers from the past,
choose a specific VPS, node, location, etc.</description>
    </item>
    <item rdf:about="https://kb.vpsfree.org/manuals/vps/repair?rev=1783888250&amp;do=diff">
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        <dc:date>2026-07-12T20:30:50+00:00</dc:date>
        <dc:creator>aither (aither@undisclosed.example.com)</dc:creator>
        <title>Fixing a Broken VPS - Annotate vpsAdmin navigation paths and update interface labels</title>
        <link>https://kb.vpsfree.org/manuals/vps/repair?rev=1783888250&amp;do=diff</link>
        <description>Fixing a Broken VPS

Since version 2.0, vpsAdmin enables members to solve most problems
with a corrupted VPS themselves, i.e. when the VPS won’t start or isn’t accessible on the network. Examples of things that
might cause a VPS to get corrupted are system updates, badly chosen commands or
configurations, etc.</description>
    </item>
    <item rdf:about="https://kb.vpsfree.org/manuals/vps/playgroundvps?rev=1783888250&amp;do=diff">
        <dc:format>text/html</dc:format>
        <dc:date>2026-07-12T20:30:50+00:00</dc:date>
        <dc:creator>aither (aither@undisclosed.example.com)</dc:creator>
        <title>Playground VPS - Annotate vpsAdmin navigation paths and update interface labels</title>
        <link>https://kb.vpsfree.org/manuals/vps/playgroundvps?rev=1783888250&amp;do=diff</link>
        <description>Playground VPS

When you need to test a new application, configuration, perform a system
upgrade in rough or prepare a new production VPS, you can use a playground VPS.
You can create up to two playground VPS, but their lifetime is limited to 1 month.
When the expiration date passes, the playground
VPS is deleted and you can reate another one. If you need more than a month to
test something, please contact the</description>
    </item>
    <item rdf:about="https://kb.vpsfree.org/manuals/vps/metrics?rev=1783888250&amp;do=diff">
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        <dc:date>2026-07-12T20:30:50+00:00</dc:date>
        <dc:creator>aither (aither@undisclosed.example.com)</dc:creator>
        <title>Metrics for Prometheus - Annotate vpsAdmin navigation paths and update interface labels</title>
        <link>https://kb.vpsfree.org/manuals/vps/metrics?rev=1783888250&amp;do=diff</link>
        <description>Metrics for Prometheus

vpsAdmin exports metrics for the monitoring system Prometheus.
You can add these metrics to your own monitoring setup, whether it’s running in your VPS or elsewhere.

The metrics include information about your VPS, such as CPU usage, memory usage, load average, data transfers, OOM reports, node statuses, and more. There are also metrics related to membership, including the date until your membership is paid.</description>
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        <dc:date>2026-07-12T20:30:50+00:00</dc:date>
        <dc:creator>aither (aither@undisclosed.example.com)</dc:creator>
        <title>Creating and Managing a VPS - Annotate vpsAdmin navigation paths and update interface labels</title>
        <link>https://kb.vpsfree.org/manuals/vps/management?rev=1783888250&amp;do=diff</link>
        <description>Creating and Managing a VPS

Creating a VPS

Members are allowed to create VPSs in the playground and the production environment provided
that they have enough resources and their
environment settings allow it. You can gain resources by lowering the parameters of existing VPSs or paying extra for more resources.</description>
    </item>
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        <dc:date>2026-07-12T20:30:50+00:00</dc:date>
        <dc:creator>aither (aither@undisclosed.example.com)</dc:creator>
        <title>IP Addresses - Annotate vpsAdmin navigation paths and update interface labels</title>
        <link>https://kb.vpsfree.org/manuals/vps/ip_addresses?rev=1783888250&amp;do=diff</link>
        <description>IP Addresses

Public IP Addresses

Every member has 1 public IPv4 address and 32 IPv6 addresses available. Additional
public IPv4 addresses are subject to a fee, IPv6 addresses are given upon request.

Private IP Addresses

Private IP addresses access the internet using NAT and are therefore not accessible from
the outside. Private addresses are useful if you divide the allocated</description>
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        <dc:date>2026-07-12T20:30:50+00:00</dc:date>
        <dc:creator>aither (aither@undisclosed.example.com)</dc:creator>
        <title>Exports of datasets and snapshots - Annotate vpsAdmin navigation paths and update interface labels</title>
        <link>https://kb.vpsfree.org/manuals/vps/exports?rev=1783888250&amp;do=diff</link>
        <description>Exports of datasets and snapshots

Exports of datasets or snapshots (backups) are used when we want to mount NAS datasets
or snapshots (backups) to a VPS. The created export will make the dataset/snapshot
available over NFS. Every export has its own IP address and path, which we use to
mount it to VPS, see below.</description>
    </item>
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        <dc:date>2026-07-12T20:30:50+00:00</dc:date>
        <dc:creator>aither (aither@undisclosed.example.com)</dc:creator>
        <title>Environments - Annotate vpsAdmin navigation paths and update interface labels</title>
        <link>https://kb.vpsfree.org/manuals/vps/environment?rev=1783888250&amp;do=diff</link>
        <description>Environments

All nodes are divided into environments. In our
case, the following environments are set up: production, playground and storage praha.
Each member has resources allocated within the environment (memory, CPU,
disk space and IP addresses) – resources that he or she can use on nodes
within that environment. Environments can have different settings – the allowed number of VPSs, etc.</description>
    </item>
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        <dc:date>2026-07-12T20:30:50+00:00</dc:date>
        <dc:creator>aither (aither@undisclosed.example.com)</dc:creator>
        <title>Backups - Annotate vpsAdmin navigation paths and update interface labels</title>
        <link>https://kb.vpsfree.org/manuals/vps/backups?rev=1783888250&amp;do=diff</link>
        <description>Backups

Backups are implemented using ZFS snapshots. A snapshot captures the state
of the dataset and all data in it at the time of its creation.
If the data are later changed, you can still access the data as it was when the snapshot
was created. You can</description>
    </item>
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        <dc:date>2026-07-12T20:30:50+00:00</dc:date>
        <dc:creator>aither (aither@undisclosed.example.com)</dc:creator>
        <title>Secondary DNS Servers - Annotate vpsAdmin navigation paths and update interface labels</title>
        <link>https://kb.vpsfree.org/manuals/server/secondary_dns?rev=1783888250&amp;do=diff</link>
        <description>Secondary DNS Servers

If you are using your own authoritative DNS server in your VPS, you can create a secondary server on our shared infrastructure through vpsAdmin. This is useful, for example, when your domain registrar requires you to have multiple servers on different IP addresses for delegation to your own server.</description>
    </item>
    <item rdf:about="https://kb.vpsfree.org/manuals/server/primary_dns?rev=1783888250&amp;do=diff">
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        <dc:date>2026-07-12T20:30:50+00:00</dc:date>
        <dc:creator>aither (aither@undisclosed.example.com)</dc:creator>
        <title>Primary DNS Servers - Annotate vpsAdmin navigation paths and update interface labels</title>
        <link>https://kb.vpsfree.org/manuals/server/primary_dns?rev=1783888250&amp;do=diff</link>
        <description>Primary DNS Servers

vpsFree.cz operates shared DNS servers that you can use as authoritative servers for your domains. The setup process is as follows:

	*  In the DNS -&gt; Primary zones menu, create a zone for your domain. The zone name is simply the domain name, usually a second-level domain, but you can delegate higher-level domains as well.</description>
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        <dc:date>2026-07-12T20:30:50+00:00</dc:date>
        <dc:creator>aither (aither@undisclosed.example.com)</dc:creator>
        <title>NixOS Impermanence - Annotate vpsAdmin navigation paths and update interface labels</title>
        <link>https://kb.vpsfree.org/manuals/distributions/nixos/impermanence?rev=1783888250&amp;do=diff</link>
        <description>NixOS Impermanence

This page describes usage of NixOS Impermanence module
at vpsFree.cz. We support impermanence with root filesystem in a temporary ZFS dataset that is
provided by our platform. It is necessary to move the Nix store to a subdataset, which can be
done automatically</description>
    </item>
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        <dc:date>2026-07-12T20:30:49+00:00</dc:date>
        <dc:creator>aither (aither@undisclosed.example.com)</dc:creator>
        <title>Everything About Membership Fees - Annotate vpsAdmin navigation paths and update interface labels</title>
        <link>https://kb.vpsfree.org/information/membership_fees?rev=1783888249&amp;do=diff</link>
        <description>Everything About Membership Fees

The board has decided that the payment is made for a period of at least three months in advance. The bank account number is
provided below. For the variable symbol, use the member ID that every member sees in vpsAdmin – the Membership Admin section, first column (ID) (</description>
    </item>
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        <dc:format>text/html</dc:format>
        <dc:date>2026-07-12T14:51:29+00:00</dc:date>
        <dc:creator>aither (aither@undisclosed.example.com)</dc:creator>
        <title>User namespace - Replace outdated vpsAdmin screenshots</title>
        <link>https://kb.vpsfree.org/manuals/vps/userns?rev=1783867889&amp;do=diff</link>
        <description>User namespace

User namespace is a Linux kernel feature used to isolate processes. An unprivileged
user from the host&#039;s point of view can become root in his user namespace. We use
user namespaces extensively: every VPS is running in one such user namespace.
As it is, interaction with user namespaces is necessary only in rare cases.</description>
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        <title>vps-console-boot.png - created</title>
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