En
Es
Description
Cron record error.
Contents
Error 5166, Bad cron expressionPossible solutions
- Check the cron record format in the schedule settings.
- FAQ
- Virtual machines
- How to reset password on a Windows VM?
- How to change timeout for operations with VMs?
- If the VMs status is “Unavailable”
- If the VMs status is "Suspended"
- If VMs are not created in an LXD cluster
- How to limit VM bandwidth when traffic threshold is exceeded?
- Reinstalling the operating system on a VM fails
- How to create a VM without IP addresses?
- If a VM cannot be deleted
- How to connect a USB device to a VM?
- libguestfs errors
- Virtual machines with connected USB devices do not boot after the hypervisor reboot
- Task registration error when performing VM operations
- Clusters
- How many VMs can be created in a high availability cluster?
- How to change netfilter parameters?
- How to get the list of free IP addresses of a cluster node?
- How to configure a cluster node in OVH data center?
- If the cluster node is unavailable
- "Attempt to migrate guest to the same host" error
- How to prepare the server for a KVM cluster node
- How to disable nested virtualization?
- If the SSH key file on the cluster node is deleted
- LXD
- How to expand the port range for VNC and SPICE?
- Node status: "Issues with libvirt"
- False node inaccessibility in the web interface
- Package update error: dependency conflict between mesa-va-drivers and the devel repository
- Users
- Backups
- Troubleshooting
- "Creating snapshot failed" error
- "Failed to get cgroup backend" error
- Almalinux repositories GPG key validation error
- A standard operating system template is missing
- Backup is under 1 MB in size
- Basic diagnostics
- CPU core number exceeded
- Data not displayed in Swagger
- Diagnosing the network availability of VMs
- Error #3009 Forbidden under administrator account
- Error when deleting dataset: dataset is busy
- Failed to add default bridge
- Guest OS cannot detect virtual machine UUID
- If "Creating snapshot fail" error appears
- If a getrandom error occurs during installation
- If the LDAP server has a self-signed SSL certificate
- Known issues
- Possible issues with migration from VMmanager 5
- Possible issues with Windows OS images
- Problems of increasing CPU and RAM without rebooting the VM
- QEMU Guest Agent cannot be installed on AlmaLinux 10 from ISO
- Registry resource unavailable
- Script terminates with the error “No complete agent response found”
- Statistics not displayed
- Ubuntu 16.04 fails to boot after reinstallation
- Unidentified SCSI device during VMware migration
- VM disk size is not decreasing
- VM fails to start with error "can't add memory device"
- VMs fail to start after enabling dynamic resource changes
- Error "Cannot delete inactive domain with snapshots" when deleting VM
- Error "RuntimeError: Not found os on node" when creating or reinstalling a VM
- IP address addition model not detected when Installing OS from an ISO repository
- VM displays incorrect uptime
- Time synchronization troubleshooting
- Error "Timed out during operation: cannot acquire state change lock" when stopping or starting a VM
- Let's Encrypt certificate cannot be issued
- RAM display issue for Windows Server virtual machines
- Sudo hangs on nodes with a large number of network interfaces
- Error during VM migration "Target domain net card does not match source"
- "Duplicate mount points" error during platform update
- Unable to create a VM without an OS or from a custom ISO image
- After updating to version 2026.02.2 and higher, the platform does not work
- Errors when creating a VM from a NoOS image
- Incorrect VM status after migration
- Virtual machines cannot be created or deleted on a cluster node. Kernel log message: "table full, dropping packet"
- VMmanager license failure: vault data retrieval error
- Unable to start the libvirt pool. "Duplicate hash table key" error
- Error "Time is not synchronized" due to missing chrony or ntp packages
- How-to guides
- How to change the node's main network interface?
- How do I change the IP address of the server with the platform?
- How to restart a frozen LXD container
- How to change the OS repository URL
- How to restore a deleted VM from a backup copy
- How to change a MAC address generation pattern for VM
- How to create your own script repository?
- How to change SSH keys on nodes
- How to migrate IP addresses from IPmanager 6?
- How to set up an IP check before allocation?
- How to add a physical network with a gateway from another subnet?
- How to change the VMmanager license?
- How to sign in to the platform with a key?
- How to check and restore QEMU Guest Agent?
- Disabling high availability
- How to change the network used by Docker?
- How to avoid VM disk corruption in Ceph v.16 (Pacific) or higher?
- How to change the platform's web interface ports?
- How to block access to a particular website
- How to block access to a website (IP address) for all VMs on a node
- How to group VMs by keyword
- How to edit a username for the node
- How to set up the period for automatic deletion of notifications
- How to pin libvirt and QEMU versions on cluster nodes
- How to change IP addressing in a cluster if the platform has been migrated to a VM
- How to increase disk performance in Windows VMs
- How to manage SSH keys on cluster nodes
- Errors
- Errors list
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