dc33f6ddd0
Cloud-init and simple-init are not meant to play together. Lets disable cloud-init if simple-init is installed. Also guarding cloud-init-datasources against running in an environment where cloud-init is not installed. Change-Id: I5bfa9a3e83d3259db2436404034ad58c780de1c9 |
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environment.d | ||
install.d | ||
element-deps | ||
package-installs.yaml | ||
pkg-map | ||
README.rst | ||
source-repository-simple-init |
=========== simple-init =========== Basic network and system configuration that can't be done until boot Unfortunately, as much as we'd like to bake it in to an image, we can't know in advance how many network devices will be present, nor if DHCP is present in the host cloud. Additionally, in environments where cloud-init is not used, there are a couple of small things, like mounting config-drive and pulling ssh keys from it, that need to be done at boot time. Autodetect network interfaces during boot and configure them ------------------------------------------------------------ The rationale for this is that we are likely to require multiple network interfaces for use cases such as baremetal and there is no way to know ahead of time which one is which, so we will simply run a DHCP client on all interfaces with real MAC addresses (except lo) that are visible on the first boot. The script `/usr/local/sbin/simple-init.sh` will be called early in each boot and will scan available network interfaces and ensure they are configured properly before networking services are started. Processing startup information from config-drive ------------------------------------------------ On most systems, the DHCP approach desribed above is fine. But in some clouds, such as Rackspace Public cloud, there is no DHCP. Instead, there is static network config via `config-drive`. `simple-init` will happily call `glean` which will do nothing if static network information is not there. Finally, glean will handle ssh-keypair-injection from config drive if cloud-init is not installed.