Proxmox: Root Password Changed Randomly on Four-Node Tree with One qDevice
Proxmox is an open-source server virtualization management solution based on Debian GNU/Linux. It enables users to manage virtual machines (VMs) and containers easily. In this article, we will discuss an issue where the root password is changed randomly on a four-node Proxmox cluster with one qDevice.
Background
Proxmox clusters are designed to provide high availability and load balancing for virtualized workloads. A cluster can consist of multiple nodes, each with its own storage device, known as a qDevice. These devices can be shared among nodes in the cluster to provide redundancy and improve performance.
Issue
Recently, a user reported that the root password on their four-node Proxmox cluster was changed randomly. This issue was first observed in the evening, and the user was unable to understand what was happening. The user had one qDevice working properly, but the root password kept changing randomly.
Possible Causes
There are several possible causes for this issue. One possibility is that an attacker has gained access to the Proxmox cluster and is changing the root password to prevent the user from logging in. Another possibility is that a configuration issue is causing the password to be reset randomly. It is also possible that a bug in the Proxmox software is causing the issue.
Solution
To solve this issue, the user should first check the Proxmox logs to see if there are any indications of an attack or configuration issue. If an attack is suspected, the user should take steps to secure the cluster, such as changing all passwords and updating the software. If a configuration issue is suspected, the user should review the Proxmox configuration files to ensure that they are correct.
If a bug in the Proxmox software is suspected, the user should report the issue to the Proxmox community. The community may be able to provide a patch or workaround for the issue. In the meantime, the user can try resetting the root password manually and see if the issue persists.
Prevention
To prevent this issue from occurring in the future, the user should take steps to secure the Proxmox cluster. This includes using strong passwords, keeping the software up to date, and limiting access to the cluster to only trusted users. The user should also regularly review the Proxmox logs to detect any suspicious activity.
The issue of the root password changing randomly on a four-node Proxmox cluster with one qDevice can be caused by several factors, including attacks, configuration issues, or bugs in the software. To solve the issue, the user should check the logs, review the configuration files, and report the issue to the Proxmox community. To prevent the issue from occurring in the future, the user should take steps to secure the cluster and regularly review the logs.
References
# Example Proxmox configuration file
node1:
memory: 4096
cores: 4
disk: 100G
cpu: host
net: vmbr0
node2:
memory: 4096
cores: 4
disk: 100G
cpu: host
net: vmbr0
node3:
memory: 4096
cores: 4
disk: 100G
cpu: host
net: vmbr0
node4:
memory: 4096
cores: 4
disk: 100G
cpu: host
net: vmbr0