Page Comparison

vNIOS for KVM supports most of the features of the Infoblox NIOS appliances, with the following limitations:

• vNIOS for KVM does not support the following features:
  • Configuration of port settings for MGMT, LAN, LAN2, and HA ports
  • The bloxTools environment
• When

  If you are using NIOS versions earlier than 8.6.x, if you configure an HA pair, both nodes in the HA pair must be

  vNIOS

  NIOS virtual instances. You cannot configure a physical NIOS appliance and a

  vNIOS

  NIOS virtual instance in an HA pair in versions earlier than 8.6.x.

• vNIOS appliances run on virtual hardware. They do not have sensors to monitor the physical CPU temperature, fan speed, and system temperature.
• Changing the vNIOS appliance settings through KVM may violate the terms of the vNIOS licensing and support models. The vNIOS appliance may not join the Grid or function properly.

...

• If the vNIOS instance fails to launch, the ports created for the instance are not deleted automatically. You need to delete them manually.
• When you start an FTP connection on OpenStack with the Listen on port field set to 2021, you need to manually add a rule to allow the 2021 port. This ensures that the connection is successful.
• Connection to the FTP service might fail when the virtual appliance enter the passive mode. To avoid this, do the following:
  • Use active mode instead of passive mode.
  • Modify the vnios-sec-group security group to open ports 1023 and above.
  • Use the FTP client inside the internal network.
• The vNIOS instances deployed in the OpenStack environment do not support HSM Safenet groups.
• IPv6 support in the OpenStack environment is limited by the Juno release and has not been verified by Infoblox.
• You cannot configure the reporting virtual appliance as an HA pair. You also cannot configure it as a Grid Master or Grid Master Candidate. You can use it only as a dedicated reporting server in the Grid.
• At certain times, a power  power failure (or an unexpected reboot) of the VM host may cause a corruption of the VM guest corruption unless writes are correctly persisted.   To do this, you must have an NVRAM-based disk controller on the host system and turn-off guest disk caching. That is, you must set the value of the disk_cachemodes parameter to the  writethrough value. The  The method to set the the disk_cachemodes parameter varies for different hypervisors. 
  
  • The following example pertains to vNIOS
  for KVM
  • for KVM deployed in OpenStack 16.2
  . 
  • :
    Log

    1. Sign in to the system as a root user.

    2. Edit

    the edit

    1. the nova.conf

    and nova-cpu.conf

    1. files by running

    the vim

    1. the following commands:
       vi /var/lib/config-data/puppet-generated/nova/etc/nova/nova.conf

    and vim

    1. 
       vi /var/lib/config-data/puppet-generated/nova_libvirt/etc/nova/nova

    -cpu

    1. .conf

    commands.
    1. Go to the [libvirt] section in both the files.

    2. 1. On a new line,

       add 

       1. add:
          disk_cachemodes =

       "writethrough".Restart the nova services.

       1. file=writethrough,block=writeback,network=writeback

       2. Save the changes and restart all containers related to Nova using the command:
          podman restart container_id

    3. The following example pertains to vNIOS
  for KVM Hypervisor through the KVM Manager:
  
  • In KVM virt-manager, select writethrough from the disk cachemode drop-down list when deploying the instance.
  • Validate the instance by editing the guest XML file and updating for KVM Hypervisor:
    1. Set the cache mode to writethrough by passing the cache=writethrough parameter in the virt-install command:
    2. Validate this setting in the instance by editing the guest XML file as follows:
       Configure the cache mode by updating the cache parameter inside the driver
     tag
    1.  tag to specify a caching
    option to configure the cache mode.
    1. option.
       
       For example, to set
    the
    1. the cache
    parameter to
    1.  parameter to writethrough: 
       <disk type='file' device='disk'>
<driver name='qemu' type='qcow2' cache='writethrough'/>
<source file='/home/vms/mygm.qcow2' index='1'/>
<backingStore/>
<target dev='vda' bus='virtio'/>
<alias name='virtio-disk0'/>
><address type='pci' domain='0x0000' bus='0x07' slot='0x00' function='0x0'/>
</disk>