Getting Started, Converting the OVF for VMware ESXi

09/01/2020 |

NOTE – We do not support OVA import to VMware ESXi directly or via VMware vCenter using a browser.

NOTE – We require the VMware OVF Tool if importing to VMware ESXi directly or via VMware vCenter:

Importing the OVA file directly to ESXi using VMware OVF Tool

You can import the OVA file directly into ESXi using VMware ovftool, from the PC or server you run ovftool.
Remember to set the Virtual Machine name you like, the datastore you want, the network you want, and point it at the server you want to deploy to.
Run the command like this:

ovftool –name=”NMIS9″ -dm=”thin” -ds=datastore_name-number -nw=”network_name-number” Opmantek-20200708-VM9-Centos7.2003-3-64bit.ova vi://user:escaped_password@host_ip_address
Opening OVA source: Opmantek-20200708-VM9-Centos7.2003-3-64bit.ova
Opening VI target: vi://user@host_ip_address:443/
Deploying to VI: vi://user@host_ip_address:443/
Transfer Completed
Warning:
– No supported manifest(sha1, sha256, sha512) entry found for: ‘omk-vm8-centos7-disk001.vmdk’.
– No supported manifest(sha1, sha256, sha512) entry found for: ‘omk-vm8-centos7-disk002.vmdk’.
– No manifest file found.
Completed successfully
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Getting Started, Converting the OVF for VMware Desktop Applications

09/01/2020 |
These VMware Desktop products  will import directly from an OVF/OVA file so you can just start up the software and select “File → Open” and select the OVA file for import. 

VMware Fusion 11

Even though, there are no caveats in relation to importing the Virtual Appliance using VMware Fusion,
it is important to remind users to grant permission to VMware Fusion to fully execute on OSX, specially after installing it.

Broken Pipe MSG
The following message is displayed while running the VM without the permission granted.
Security Settings - 700

The permission should be granted on System Preferences > Security & Privacy

Upgrade the Virtual machine hardware version (optional)

The Opmantek Virtual Appliance ships with the virtual machine hardware version set very low for maximum compatibility, but you may want to upgrade the hardware version to a higher level (to leverage performance benefits, remove memory limitations, etc.) as described on the VMware website

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Getting Started, Converting the OVF for VirtualBox

09/01/2020 |
VirtualBox will import directly from an OVF/OVA file so you can just start up VirtualBox and select “Import Appliance…”
VM Guide 01 - 700
Browse to where you unzipped the file and select the ovf file, you should see a screen something like this:
vm-settings
The import process may take a couple of minutes to complete, just enough time to grab a cup of coffee I’d say.If you have any trouble the VirtualBox documentation is here: https://www.virtualbox.org/manual/ch01.html#ovf
NOTE – The virtual machine is configured to use 8GB memory and the network interface may appear as NAT. Please revise the memory to suit and change the NAT adapter to Bridged.
Important Note regarding Ext4:
If your Virtualbox host is Linux and your VMs are stored on XFS or Ext4 file systems, then it is absolutely necessary that you enable the “Host I/O Cache” for all virtual disk controllers after importing the OVF file, or you run the risk of file system corruption in your guest. On one of our test systems (Linux kernel 3.14.23, Virtualbox 4.3.14) the VM wouldn’t even fully get through the first boot before the virtual disks got corrupted – but with Host I/O Cache on everything is fine. 

Below is an example of how to enable Host I/O Cache using VirtualBox:

SCSI-Host-I_O-Cache
Note – In some cases the system will log you out over and over due to the OVA by default having Automatic time synchronization enabled that may cause some authentication cookie issues. To avoid this issue simply check the “Hardware Clock in UTC Time” box in the settings menu under “System” before starting the appliance.
VM Guide 03 - 700
CentOS 7 on VirtualBox 

It’s now highly unlikely that VirtualBox users will find themselves at the dracut emergency shell prompt when first booting our vm that runs CentOS 7.
We continue to provide this information in case needed:

rescueKernel - 700
When faced with this obstacle reboot the vm selecting the rescue kernel.
dracutCommand - 700

After it boots login as normal and try the try the following dacut command (you can find login credentials here).
dracut -f /boot/ <kernel_image> <kernel_name>

dracutPrompt - 700
If the command completes successfully reboot the vm normally. Be aware that future kernel updates may require this maneuver be done again.
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NMIS9 Inteligencia Redefinida

08/05/2020 |

Aumenta tu eficiencia con la automatización a través de la potencia del motor NMIS 9. Perfecto para los MSP, el NMIS 9 de Opmantek resolverá problemas de escala mediante una arquitectura flexible y la integración con las herramientas existentes. Descarga una prueba gratis aquí: t.ly/Mfka
t.ly/zpQO

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Una Guía Para Profesionales de TI Sobre Automatización de Procesos de Red

07/27/2020 |

Esta guía está diseñada para los gerentes de TI que buscan implementar la automatización de procesos de red en su organización.

Puntos clave:

  • Centrarse en buenas prácticas operativas.
  • Escogiendo las tareas correctas.
  • Manejo de problemas comunes a través de la automatización.
  • Mapeo del proceso de automatización.
  • Ahorro de tiempo.
  • Lista de Verificación.

La guía habla de el mejor enfoque para la gestión del cambio y la aceptación del equipo, proporciona un marco metodológico para usar cuando se considera la automatización de una tarea manual en un entorno de red y los pasos a seguir para identificar un caso de prueba efectivo para tu organización.

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Cómo escalar el Monitoreo de Red de Manera Efectiva

07/27/2020 |

Esta guía está diseñada para gerentes de TI que buscan escalar su monitoreo de red en su organización.

 

Puntos clave:

  • Los pros y los contras de escalar agregando miembros del personal.
  • Los pros y los contras de escalar cambiando los procesos.
  • Riesgos de escalar su red.
  • Tiempo medio entre fallas (MTBF)
  • Tiempo medio de resolución (MTTR)

La guía analiza el mejor enfoque para aumentar tus capacidades de monitoreo y aumentar tu capacidad de generar ingresos, al tiempo que garantiza que los costos de hacer negocios no se inflen al mismo ritmo.

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