HELP Problem DHCP - Ubuntu 18.04
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@ultralivre I’m not sure I understand 100% of what you said. I can tell you that FOG will image correctly on a fully routable network with vlans. For DNSMASQ to work across VLANs, you need to update your subnet router and put the FOG’s IP address as the last server in the dhcp-helper/dhcp-relay service on your router. Then you can image across the subnets.
Now there are reasons to turn this option on and reasons to keep fog imaging isolated. You make the settings that work best for your company.
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@george1421 Boa noite !
A aplicação FOG funciona na rede através do protocolo DHCP?
cliente vs servidor trocam informações primeiramente com DHCP?Estou tentando procurar a documentação para descobrir como o FOG funciona.
Obrigado.
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@ultralivre FOG doesn’t use or interact with dhcp directly. The PXE booting client computer uses dhcp to get its IP address and the hint how to find the FOG server. This is via dhcp options 66 and 67. The client computer then connects to the fog server using the tftp protocol to download the network boot loader (iPXE). That is where the FOG server firsts connects to the workflow.
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Boa tarde,
Trocando de assunto !
É possível movimentar imagens criadas em diferentes servidores FOG ?
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@ultralivre Yes its possible.
There are two parts
- Raw data stored in /images/<image_name> directory
- Meta data that is stored in the database. You can export this info using the web ui
Move the /images files to your new server
Export the metadata from old server then import into new server all using the web ui. -
Você consegue mostrar o que são estes metadados?
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@ultralivre said in HELP Problem DHCP - Ubuntu 18.04:
Você consegue mostrar o que são estes metadados?
Anything stored in the FOG database. From the web ui you can export and import this metadata.
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@george1421
Boa noite !Recentemente recebi uma quantidade grande de equipamentos da Dell optplex 5000 e ao tentar utilizar o servidor FOG recebi a seguinte mensagem:
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@ultralivre If you make a new FOG server then be sure to update the FOS Linux kernel to 5.15.x version. FOG Web UI -> FOG Configuration -> Kernel update.
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@george1421
Bom dia,
Executei a atualização do kernel, porém fiquei na duvida se: a atualização precisar aparecer no fog?
Como pode ver eu atualizei mas continua aparecendo a versão 4.19.145
Esta certo?
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@ultralivre Yes you are still running on the old FOS linux kernel and that is causing the error message you see.
When you select the buttons for 5.15.71 (or whatever version) it should download and install in FOG.
If the auto update is not working for you, then you can get the kernels from here: https://github.com/FOGProject/fos/releases
They need to be renamed as bzImage and bzImage32 and placed in the following directory on the fog server.
/var/www/html/fog/service/ipxedirectory. You can also run this command to verify the version of the kernel from the FOG server’s linux command promptfile bzImageit will print the kernel version. -
Bom dia,
Perfeito
Vou aproveitar o contato e perguntar:
Tenho muitos computadores e pouca memória ram no meu servidor fog, porém gostaria de colocar todos ao mesmo tempo mas que o servidor fog fosse administrando a clonagem, de 5 em 5 ou de 4 em 4, para não sobrecarregar o meu servidor físico. É possível ?
Obrigado
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@ultralivre I’ve never really looked at ram usage during a single unicast deployment to know how many you can send at one time for a limit.
I have done testing with how many unicast images can I send at one time without impacting performance of the 1GbE network connection. The answer is 3. Above 3 you can saturate a 1GbE network connection.
How much ram do you have in your fog server?
There is another method to deploy many computers at one time with FOG its called multicast imaging. This method configures the target computer with a receiver program and then FOG server sends out a single image to all computers running the receiver program. This method you can image 25 computers using no more fog server resources than a single unicast image. The multicast deployments require more configuration on the network side and all target computers must be on the same IP subnet as the FOG server.
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@george1421
Muito bem, você consegue me dar um exemplo de como utilizar o cliente multicast ? -
@ultralivre said in HELP Problem DHCP - Ubuntu 18.04:
Muito bem, você consegue me dar um exemplo de como utilizar o cliente multicast ?
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@george1421
Boa Noite,Eu olhei o link que você enviou e acredito que entendi a teoria, você tem ou conhece algum tutorial ou vídeo explicativo em funcionamento ?
