Booting Ubuntu Without External Access
How to install Ubuntu without internet access.
Default Ubuntu ISOs will attempt to check internet repositories, this can cause problems during provisioning if your environment does not have outbound access.
To workaround this problem, you need to supply a DNS and gateway for your subnet. There are several ways to do this:
- Internal to Digital Rebar: Define Options 3 (Gateway) and 6 (DNS) for your Machine Subnet
- External to Digital Rebar: Adding
default_route=trueto the boot parameters and include a DNS server on the local subnet in DHCP
Additional resources and information related to this Knowledge Base article.
- use of the
package-repositoriesParam to specify internal Package Repositories
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