+deb http://download.proxmox.com/debian/pve buster pvetest
+----
+
+WARNING: The `pvetest` repository should (as the name implies) only be used for
+testing new features or bug fixes.
+
+[[sysadmin_package_repositories_ceph]]
+{pve} Ceph Repository
+~~~~~~~~~~~~~~~~~~~~~
+
+This repository holds the main {pve} Ceph packages. They are suitable for
+production. Use this repository if you run the Ceph client or a full Ceph
+cluster on {pve}.
+
+.File `/etc/apt/sources.list.d/ceph.list`
+----
+deb http://download.proxmox.com/debian/ceph-nautilus buster main
+----
+
+
+{pve} Ceph Testing Repository
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+This Ceph repository contains the Ceph packages before they are moved to the
+main repository. It is used to test new Ceph releases on {pve}.
+
+.File `/etc/apt/sources.list.d/ceph.list`
+----
+deb http://download.proxmox.com/debian/ceph-nautilus buster test
+----
+
+{pve} Ceph Luminous Repository For Upgrade
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+If Ceph is deployed this repository is needed for the upgrade from {pve} 5.x to
+{pve} 6.0. It provides packages for the older Ceph Luminous release for {pve}
+6.0.
+
+The https://pve.proxmox.com/wiki/Upgrade_from_5.x_to_6.0[Upgrade 5.x to 6.0]
+document explains how to use this repository in detail.
+
+.File `/etc/apt/sources.list.d/ceph.list`
+----
+deb http://download.proxmox.com/debian/ceph-luminous buster main
+----
+
+SecureApt
+~~~~~~~~~
+
+The 'Release' files in the repositories are signed with GnuPG. APT is using
+these signatures to verify that all packages are from a trusted source.
+
+If you install {pve} from an official ISO image, the key for verification is
+already installed.
+
+If you install {pve} on top of Debian, download and install
+the key with the following commands:
+
+----
+ # wget http://download.proxmox.com/debian/proxmox-ve-release-6.x.gpg -O /etc/apt/trusted.gpg.d/proxmox-ve-release-6.x.gpg
+----
+
+Verify the checksum afterwards with:
+
+----
+# sha512sum /etc/apt/trusted.gpg.d/proxmox-ve-release-6.x.gpg
+----
+
+The output should be:
+
+----
+acca6f416917e8e11490a08a1e2842d500b3a5d9f322c6319db0927b2901c3eae23cfb5cd5df6facf2b57399d3cfa52ad7769ebdd75d9b204549ca147da52626 /etc/apt/trusted.gpg.d/proxmox-ve-release-6.x.gpg
+----
+
+or:
+
+----
+# md5sum /etc/apt/trusted.gpg.d/proxmox-ve-release-6.x.gpg
+----
+The output should be:
+
+----
+f3f6c5a3a67baf38ad178e5ff1ee270c /etc/apt/trusted.gpg.d/proxmox-ve-release-6.x.gpg
+----
+
+
+ifdef::wiki[]
+
+// include note about older releases, but only for wiki
+
+
+{pve} 5.x Repositories
+~~~~~~~~~~~~~~~~~~~~~~
+
+{pve} 5.x is based on Debian 9.x (``stretch''). Please note that this release is
+out of date. Existing installations should be updated. Nevertheless access to
+these repositories is still provided.
+
+[width="100%",cols="<d,3m",options="header"]
+|===========================================================
+|Repository | sources.list entry
+|{pve} 5.x Enterprise |
+deb https://enterprise.proxmox.com/debian stretch pve-enterprise
+|{pve} 5.x No-Subscription |
+deb http://download.proxmox.com/debian stretch pve-no-subscription
+|{pve} 5.x Test |
+deb http://download.proxmox.com/debian stretch pvetest
+|===========================================================
+
+
+{pve} 4.x Repositories
+~~~~~~~~~~~~~~~~~~~~~~
+
+{pve} 4.x is based on Debian 8.x (``jessie''). Please note that this release is
+out of date. Existing installations should be updated. Nevertheless access to
+these repositories is still provided.
+
+[width="100%",cols="<d,3m",options="header"]
+|===========================================================
+|Repository | sources.list entry
+|{pve} 4.x Enterprise |
+deb https://enterprise.proxmox.com/debian jessie pve-enterprise
+|{pve} 4.x No-Subscription |
+deb http://download.proxmox.com/debian jessie pve-no-subscription
+|{pve} 4.x Test |