vzctl – A Quick Guide to Everyday Use Commands

vzctl – A Quick Guide to Everyday Use Commands

Certainly! vzctl is a utility used for managing containers in Virtuozzo, a virtualization platform. Here’s a quick guide to everyday vzctl commands:

1. Creating a Container:

vzctl create <CTID> --ostemplate <OS_template>
  • Replace <CTID> with the Container ID.
  • <OS_template> is the OS template to use for creating the container.

2. Starting a Container:

vzctl start <CTID>
  • Start the container with the specified <CTID>.

3. Stopping a Container:

vzctl stop <CTID>
  • Stop the running container with the specified <CTID>.

4. Entering a Container:

vzctl enter <CTID>
  • Enter the container’s shell to execute commands.

5. Setting Resources:

vzctl set <CTID> --cpus <number>:<limit> --save vzctl set <CTID> --ram <amount>:<limit> --swap <amount>:<limit> --save
  • Set CPU, RAM, and swap limits for the container.

6. Mounting Directories:

vzctl mount <CTID> vzctl umount <CTID>
  • Mount and unmount directories in the container.

7. Setting IP Address:

vzctl set <CTID> --ipadd <IP_address> --save
  • Assign an IP address to the container.

8. Removing a Container:

vzctl destroy <CTID>
  • Remove the container with the specified <CTID>.

9. Listing Containers:

vzlist -a
  • List all containers, including those not currently running.

10. Container Information:

vzctl exec <CTID> df -h vzctl exec <CTID> ps aux
  • Execute commands within the container to get disk space or process information.

11. Snapshotting a Container:

vzctl suspend <CTID> vzctl resume <CTID>
  • Suspend and resume a container to create a snapshot.

12. Setting Hostname:

vzctl set <CTID> --hostname <new_hostname> --save
  • Change the hostname of the container.

13. Applying Configurations:

vzctl applyconfig <CTID> --save
  • Apply changes made to the container’s configuration.

These are basic commands for everyday use with vzctl in Virtuozzo. Adjust parameters and options based on your specific requirements and Virtuozzo setup.

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