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Virtuozzo 7 User's Guide

Version 7.0.5 — Sep 29, 2017
  • 1. Learning Virtuozzo Basics
    • 1.1. Virtuozzo Overview
    • 1.2. OS Virtualization Layer
    • 1.3. Hardware Virtualization Layer
    • 1.4. Virtuozzo Configuration
    • 1.5. Resource Management
    • 1.6. Understanding Licensing
    • 1.7. Physical Server Availability Considerations
  • 2. Managing Virtual Machines and Containers
    • 2.1. Creating Virtual Machines and Containers
    • 2.2. Performing Initial Configuration of Virtual Machines and Containers
    • 2.3. Starting, Stopping, Restarting, and Querying Status of Virtual Machines and Containers
    • 2.4. Listing Virtual Machines and Containers
    • 2.5. Cloning Virtual Machines and Containers
    • 2.6. Suspending Virtual Machines and Containers
    • 2.7. Running Commands in Virtual Machines and Containers
    • 2.8. Deleting Virtual Machines and Containers
    • 2.9. Viewing Detailed Information About Virtual Machines and Containers
    • 2.10. Managing Virtual Machine and Container Backups
    • 2.11. Managing Templates
    • 2.12. Managing Snapshots
    • 2.13. Migrating Virtual Machines and Containers
    • 2.14. Performing Container-specific Operations
    • 2.15. Performing Virtual Machine-specific Operations
  • 3. Managing Resources
    • 3.1. Managing CPU Resources
    • 3.2. Managing Disk Quotas
    • 3.3. Managing Virtual Disks
    • 3.4. Managing Network Accounting and Bandwidth
    • 3.5. Managing Disk I/O Parameters
    • 3.6. Managing Containers Memory Parameters
    • 3.7. Managing Virtual Machines Memory Parameters
    • 3.8. Managing Container Resource Configuration
    • 3.9. Managing Virtual Machine Configuration Samples
    • 3.10. Monitoring Resources
  • 4. Managing Services and Processes
    • 4.1. What Are Services and Processes
    • 4.2. Main Operations on Services and Processes
    • 4.3. Managing Processes and Services
  • 5. Managing Network
    • 5.1. Managing Network Adapters on the Hardware Node
    • 5.2. Networking Modes in Virtuozzo
    • 5.3. Configuring Virtual Machines and Containers in Host-Routed Mode
    • 5.4. Configuring Virtual Machines and Containers in Bridged Mode
  • 6. Managing Licenses
    • 6.1. Installing the License
    • 6.2. Updating the License
    • 6.3. Transferring the License to Another Server
    • 6.4. Viewing the License
  • 7. Keeping Your System Up To Date
    • 7.1. Updating Virtuozzo
    • 7.2. Updating Virtuozzo Kernel with ReadyKernel
    • 7.3. Updating Software in Virtual Machines
    • 7.4. Updating Containers
  • 8. Managing High Availability Clusters
    • 8.1. Prerequisites for High Availability
    • 8.2. Enabling and Disabling High Availability on Nodes
    • 8.3. Configuring Resource Relocation Modes
    • 8.4. Configuring Resource Relocation Modes on Nodes Participating in S3 or iSCSI Export
    • 8.5. Configuring HA Priority for Virtual Machines and Containers
    • 8.6. Managing CPU Pools
    • 8.7. Monitoring Cluster Status
    • 8.8. Managing Cluster Resources with Scripts
  • 9. Hardening Your Virtuozzo Server
    • 9.1. Update Policy
    • 9.2. Audit Policy
    • 9.3. Mount Policy
    • 9.4. Service Policy
    • 9.5. Account Policy
    • 9.6. Networking Policy
  • 10. Advanced Tasks
    • 10.1. Configuring Automatic Memory Management Policies
    • 10.2. Creating Customized Containers
    • 10.3. Setting Up Docker in Virtuozzo Containers
    • 10.4. Managing Container Virtual Hard Disk Encryption
    • 10.5. Connecting to Virtual Machines and Containers via VNC
    • 10.6. Managing iptables Modules
    • 10.7. Using SCTP in Containers and Virtual Machines
    • 10.8. Creating Configuration Files for New Linux Distributions
    • 10.9. Aligning Disks and Partitions in Virtual Machines
    • 10.10. Enabling Legacy VM Debug Mode
    • 10.11. Installing Optional Virtuozzo Packages
    • 10.12. Integrating Virtuozzo 7 with OpenStack
    • 10.13. Enabling Nested Virtualization in Virtual Machines
    • 10.14. Participating in Customer Experience Program
  • 11. Troubleshooting
    • 11.1. General Considerations
    • 11.2. Kernel Troubleshooting
    • 11.3. Container Management Issues
    • 11.4. Getting Technical Support
  • Virtuozzo 7 User's GuidePDF, 928 KB
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11. Troubleshooting¶

This chapter provides the information about problems that may occur during your work with Virtuozzo and suggests the ways to solve them.

In this chapter:¶

  • 11.1. General Considerations
  • 11.2. Kernel Troubleshooting
    • 11.2.1. Using ALT+SYSRQ Keyboard Sequences
    • 11.2.2. Saving Kernel Faults (OOPS)
    • 11.2.3. Finding a Kernel Function That Caused the D Process State
  • 11.3. Container Management Issues
    • 11.3.1. Failure to Start a Container
      • 11.3.1.1. Solution 1
      • 11.3.1.2. Solution 2
      • 11.3.1.3. Solution 3
      • 11.3.1.4. Solution 4
    • 11.3.2. Failure to Access a Container from Network
      • 11.3.2.1. Solution 1
      • 11.3.2.2. Solution 2
    • 11.3.3. Failure to Log In to a Container
      • 11.3.3.1. Solution 1
      • 11.3.3.2. Solution 2
  • 11.4. Getting Technical Support
Version 7.0.5 — Sep 29, 2017
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