From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from firstgate.proxmox.com (firstgate.proxmox.com [212.224.123.68]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.proxmox.com (Postfix) with ESMTPS id 09413C06DA for ; Thu, 11 Jan 2024 11:52:01 +0100 (CET) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id 69A0AF9C7 for ; Thu, 11 Jan 2024 11:51:51 +0100 (CET) Received: from proxmox-new.maurer-it.com (proxmox-new.maurer-it.com [94.136.29.106]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by firstgate.proxmox.com (Proxmox) with ESMTPS for ; Thu, 11 Jan 2024 11:51:50 +0100 (CET) Received: from proxmox-new.maurer-it.com (localhost.localdomain [127.0.0.1]) by proxmox-new.maurer-it.com (Proxmox) with ESMTP id B0F17490A4 for ; Thu, 11 Jan 2024 11:51:50 +0100 (CET) From: =?UTF-8?q?Fabian=20Gr=C3=BCnbichler?= To: pve-devel@lists.proxmox.com Date: Thu, 11 Jan 2024 11:51:20 +0100 Message-Id: <20240111105123.370028-7-f.gruenbichler@proxmox.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240111105123.370028-1-f.gruenbichler@proxmox.com> References: <20240111105123.370028-1-f.gruenbichler@proxmox.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-SPAM-LEVEL: Spam detection results: 0 AWL 0.065 Adjusted score from AWL reputation of From: address BAYES_00 -1.9 Bayes spam probability is 0 to 1% DMARC_MISSING 0.1 Missing DMARC policy KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_PASS -0.001 SPF: sender matches SPF record T_SCC_BODY_TEXT_LINE -0.01 - Subject: [pve-devel] [PATCH docs 2/2] ssh: document PVE-specific setup X-BeenThere: pve-devel@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox VE development discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 11 Jan 2024 10:52:01 -0000 such as adapted configs and managed files. Signed-off-by: Fabian Grünbichler --- Notes: actual version needs to be inserted! pvecm.adoc | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/pvecm.adoc b/pvecm.adoc index 5b5b27b..3a32cfb 100644 --- a/pvecm.adoc +++ b/pvecm.adoc @@ -918,6 +918,24 @@ transfer memory and disk contents. * Storage replication +SSH setup +~~~~~~~~~ + +On {pve} systems, the following changes are made to the SSH configuration/setup: + +* the `root` user's SSH client config gets setup to prefer `AES` over `ChaCha20` + +* the `root` user's `authorized_keys` file gets linked to + `/etc/pve/priv/authorized_keys`, merging all authorized keys within a cluster + +* `sshd` is configured to allow logging in as root with a password + +NOTE: Older systems might also have `/etc/ssh/ssh_known_hosts` set up as symlink +pointing to `/etc/pve/priv/known_hosts`, containing a merged version of all +node host keys. This system was replaced with explicit host key pinning in +`pve-cluster <>`, the symlink can be deconfigured if still in +place by running `pvecm updatecerts --unmerge-known-hosts`. + Pitfalls due to automatic execution of `.bashrc` and siblings ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -- 2.39.2