wilke / skycore

Tool to load docker images into the docker engine

Skycore

Tool to push Docker images into Shock and pull from Shock. Preserves some metadata and uses etcd configuration to deploy Docker images.

Get Skycore binary

Either use the Dockerfile in this repository to statically compile skycore (The Dockerfile contains some more comments), or download pre-compiled binary (amd64):

wget https://github.com/wgerlach/Skycore/releases/download/latest/skycore

Skycore from source (requires golang)

go get github.com/wgerlach/Skycore/skycore

Build container

docker build --tag skycore/factory:latest .

Use container to compile and get binary:

mkdir -p ~/skycore_bin
docker run -t -i --name sky_fac -v ~/skycore_bin:/gopath/bin skycore/factory:latest bash
cd /gopath/src/github.com/wgerlach/Skycore && git pull && /compile.sh

skycore execution within container

# container will need access to docker socket
mkdir -p ~/skycore_bin
docker run -t -i -v /var/run/docker.sock:/var/run/docker.sock --name sky_fac -v ~/skycore_bin:/gopath/bin skycore/factory:latest bash

update skycore vendors

go get -v github.com/mjibson/party
cd $GOPATH/src/github.com/wgerlach/
git clone --recursive [email protected]:wgerlach/Skycore.git
cd Skycore/skycore
party -d vendor -c -u

Deploy the skycore binary on your CoreOS machines

get IP addresses: Either a) from fleetctl (if installed)

export MACHINES=`fleetctl list-machines --full --no-legend | cut -f 2 | tr '\n' ' '` ; echo ${MACHINES}

or b) from nova (I admit, this is ugly.)

export MACHINES=`nova list --name <my_coreos> | grep -E -o "([0-9]{1,3}[\.]){3}[0-9]{1,3}" | tr '\n' ' '` ; echo ${MACHINES}

To get rid of the ssh warning "WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED", you can run:

for i in ${MACHINES} ; do ssh-keygen -f "/home/ubuntu/.ssh/known_hosts" -R ${i} ; done

Do some testing (read coreos version or openstack uuid):

for i in ${MACHINES} ; do echo -n "$i: " ; ssh -i ~/.ssh/coreos.pem -o StrictHostKeyChecking=no core@${i} grep PRETTY /etc/os-release  ; done
for i in ${MACHINES} ; do echo -n "$i: " ; ssh -i ~/.ssh/coreos.pem -o StrictHostKeyChecking=no core@${i} curl -s http://169.254.169.254/openstack/2013-10-17/meta_data.json | json_xs | grep uuid  ; done

Finally, copy the binary:

rm -f skycore ; wget https://github.com/wgerlach/Skycore/releases/download/latest/skycore
chmod +x skycore
for i in ${MACHINES} ; do scp -i ~/.ssh/coreos.pem -o StrictHostKeyChecking=no ./skycore core@${i}: ; done