eb395ec558
CentOS 7 reached EOL on 30th June 2024[1] and RHEL 7 ended its maintenance support 2 phase[2] the same date. This change removes the ablity to build images derived from these base images. The centos and centos-minimal elements now default to a DIB_RELEASE value of 9-stream. [1] https://www.redhat.com/en/topics/linux/centos-linux-eol [2] https://www.redhat.com/en/technologies/linux-platforms/enterprise-linux/rhel-7-end-of-maintenance Change-Id: Ic50e08d9f84bbd319129be236d799eade5f40be8
52 lines
2.1 KiB
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52 lines
2.1 KiB
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===================
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dhcp-all-interfaces
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===================
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Autodetect network interfaces during boot and configure them for DHCP
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The rationale for this is that we are likely to require multiple
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network interfaces for use cases such as baremetal and there is no way
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to know ahead of time which one is which, so we will simply run a
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DHCP client on all interfaces with real MAC addresses (except lo) that
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are visible on the first boot.
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On non-Gentoo based distributions the script
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/usr/local/sbin/dhcp-all-interfaces.sh will be called early in each
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boot and will scan available network interfaces and ensure they are
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configured properly before networking services are started.
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On Gentoo based distributions we will install the dhcpcd package and
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ensure the service starts at boot. This service automatically sets
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up all interfaces found via dhcp and/or dhcpv6 (or SLAAC).
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Environment Variables
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---------------------
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DIB_DHCP_TIMEOUT
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:Required: No
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:Default: 30
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:Description: Amount of time in seconds that the systemd service(or dhclient)
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will wait to get an address. Should be increased in networks such as
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Infiniband.
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:Example: DIB_DHCP_TIMEOUT=300
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DIB_DHCP_NETWORK_MANAGER_AUTO
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:Required: No
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:Default: false
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:Description: When NetworkManager is detected, and this is set to true the
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dhcp-all-interfaces service will not be installed. Only the NetworkManager
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configuration will be added. NetworkManager is quite capable to do automatic
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interface configuration. NetworkManager will by default try to
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auto-configure any interface with no configuration, it will use DHCP for
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IPv4 and Router Advertisements to decide how to initialize IPv6.
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:Example: DIB_DHCP_NETWORK_MANAGER_AUTO=true
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DIB_DHCP_CLIENT
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:Required: no
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:Default: internal
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:Description: When NetworkManager is in use, this setting conveys which DHCP
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client is in use for acquiring a DHCP address for the node. In some specific
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cases, where known that dhclient is the tested or most compatible default,
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specifically for Centos 8, and 8-Stream, as well as derived distributions.
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Otherwise, the "internal" dhcp client is the default.
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:Example: DIB_DHCP_CLIENT
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