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diskimage-builder/elements/centos-minimal/README.rst

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Create docs site containing element READMEs We currently do not have the ability to create a docs site which outlines all the elements. Change-Id: I77ccf61e0c4b1509b3e7ce9b8f15ea5ccfd50d9b
2015-02-07 10:30:02 +00:00
==============
centos-minimal
==============
Add minimal ubuntu and centos base elements There are times when a much more stripped down base image is desired over the distro cloud images. For instance, Infra would like some base images that do not have cloud-init or really much of anything else. This is easy to accomplish with debootstrap and rinse. Change-Id: I44ff22457165afb048fdaea469210ae47d83dd3f
2014-11-22 23:46:33 +00:00
Create a minimal image based on CentOS 7.
Port centos-minimal to yum-minimal Now that we have a generic yum-minimal element, just use it in centos instead of rinse. Adding base as an element-provides of yum-minimal because this element conflicts with the base element. Co-Authored-By: Gregory Haynes <greg@greghaynes.net> Change-Id: I15275d821781171c118f21aa0c0bca55f65a65b3
2015-03-22 17:45:07 +00:00
Use of this element will require 'yum' and 'yum-utils' to be installed on
Ubuntu and Debian. Nothing additional is needed on Fedora or CentOS.
Add minimal ubuntu and centos base elements There are times when a much more stripped down base image is desired over the distro cloud images. For instance, Infra would like some base images that do not have cloud-init or really much of anything else. This is easy to accomplish with debootstrap and rinse. Change-Id: I44ff22457165afb048fdaea469210ae47d83dd3f
2014-11-22 23:46:33 +00:00
Port centos-minimal to yum-minimal Now that we have a generic yum-minimal element, just use it in centos instead of rinse. Adding base as an element-provides of yum-minimal because this element conflicts with the base element. Co-Authored-By: Gregory Haynes <greg@greghaynes.net> Change-Id: I15275d821781171c118f21aa0c0bca55f65a65b3
2015-03-22 17:45:07 +00:00
This element cannot be used with the base element, therefore must pass the -n
flag to disk-image-create when using this element.
The `DIB_OFFLINE` or more specific `DIB_YUMCHROOT_USE_CACHE`
Add minimal ubuntu and centos base elements There are times when a much more stripped down base image is desired over the distro cloud images. For instance, Infra would like some base images that do not have cloud-init or really much of anything else. This is easy to accomplish with debootstrap and rinse. Change-Id: I44ff22457165afb048fdaea469210ae47d83dd3f
2014-11-22 23:46:33 +00:00
variables can be set to prefer the use of a pre-cached root filesystem
tarball.
yum-minimal: do not configure eth0 & eth1 for DHCP automatically Add an environment variable to control the creation of eth0/1 interface enablement scripts. With a tool such as glean, the presence of these scripts will indicate the interface is configured and configuration-drive settings will not be applied. This means in a non-dhcp situation like on Rackspace, network is broken. On Fedora, where later systemd provides "predictable network interface names" [1] eth0 & eth1 ironically aren't predictable so this just confuses things. You really need cloud-init or glean or something to bring up your interfaces in a sane fashion. This maintains the status-quo on centos-minimal, but disables creation for fedora-minimal. [1] http://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames/ Change-Id: I3f1ffeb6de3b1f952292a144efab9554f7f99a5f
2015-12-14 04:26:11 +00:00
By default, `DIB_YUM_MINIMAL_CREATE_INTERFACES` is set to enable the
creation of `/etc/sysconfig/network-scripts/ifcfg-eth[0|1]` scripts to
enable DHCP on the `eth0` & `eth1` interfaces. If you do not have
these interfaces, or if you are using something else to setup the
network such as cloud-init, glean or network-manager, you would want
to set this to `0`.
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