Partial Omaha protocol implementation used by CoreOS hosts.
Configure CoreOS update server to point to CoreOS Omaha server:
# /etc/coreos/update.conf
GROUP=stable
SERVER=http://omaha.my-server.com:8000Cloud-init:
#cloud-config
coreos:
update:
group: stable
server: http://omaha.my-server.com:8000The following arguments are mandatory:
--urlbase=<URL>Base URL where CoreOS images should be downloaded--channel=<channel-decl>One channel declaration, may be used once per channel
Optional arguments:
--dateShow date and time when logging--servername=<server>An optional server name used on response objects--listen=<port>Port to listen, default is8000--trustproxyUse when behind a proxy which definesX-Forwarded-Forheader
Use as much --channel arguments as the number of channels.
The argument has the following syntax:
--channel=<name>,<version>,<size>,<sha1-hash>,<sha256-hash>Where:
nameis the name of the channel, likebetaorstableversionis the complete version number, like1122.2.0or1192.0.0sizeis the file size in bytessha1-hashis the base64 encode of the sha1 hash:openssl sha -sha1 -binary update.gz | base64sha256-hashis the base64 encode of the sha256 hash:openssl sha -sha256 -binary update.gz | base64
Download original images from https://update.release.core-os.net/amd64-usr/<VERSION>/update.gz.
This systemd unit has the most common configurations. Change update.my-server.com below to the server where you want CoreOS hosts download the images.
[Unit]
Description=CoreOS Omaha
After=docker.service
Requires=docker.service
[Service]
ExecStartPre=-/usr/bin/docker stop coreos-omaha
ExecStartPre=-/usr/bin/docker rm coreos-omaha
ExecStart=/usr/bin/docker run \
--name coreos-omaha \
-p 8000:8000 \
quay.io/jcmoraisjr/coreos-omaha:latest \
--channel=alpha,1192.0.0,254754856,EVjNyHkg2EtSUSyf477ExtjP/Lo=,VJiWOBmoFECZk1znmglW6HrknpcQ9LJyb+meaimBjjg= \
--channel=beta,1185.1.0,247835613,v333LDdL31kVpWeyv+/PtK7fysg=,zE55qgObyunDfNuF0Ny2zwq9hNz98umv7d43F2YY37A= \
--channel=stable,1122.2.0,212555113,+ZFmPWzv1OdfmKHaGSojbK5Xj3k=,cSBzKN0c6vKinrH0SdqUZSHlQtCa90vmeKC7p/xk19M= \
--urlbase=http://update.my-server.com/coreos/amd64-usr \
--servername=update.my-server.com
ExecStop=-/usr/bin/docker stop coreos-omaha
RestartSec=10s
Restart=always
[Install]
WantedBy=multi-user.target