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systemctl enable --runtime /media/state/units/docker-local.service
systemctl daemon-reload
systemctl start docker-local

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rootfs=/dev/xvda3
ro_compat_offset=$((0x464 + 3))
printf '\000' |     sudo dd of="${rootfs}" seek=$((offset + ro_compat_offset)) \
  conv=notrunc count=1 bs=1

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Setup your ssh client so it can ssh into your vagrant machine like a regular host:

vagrant ssh-config --host coreos-vagrant >> ~/.ssh/config
vagrant ssh-config --host coreos-vagrant | sed -n "s/IdentityFile//gp" | xargs ssh-add

Login! Using 'ssh -A' forwards an agent from your host machine into your vagrant machine.

philips

This causes rethink to eat 100% cpu:

r.db('roller').table('app_event').groupedMapReduce(
  r.js('(function(row) { return row.Version })'),
  function(event) { return 1; },
  function(acc, count) { return acc.add(count); }, 0)
  
RqlRuntimeError: Cannot convert javascript `undefined` to ql::datum_t. in:
r.db("roller").table("app_event").groupedMapReduce(r.js("this.Version"), function(var_12) { return 1; }, function(var_13) { return var_13.add(var_14); }, {base: 0})
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  

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$ docker run busybox echo foo
2014/02/19 02:12:37 Error: create: create: command not found

core@localhost ~ $ docker run -i -t busybox exit 1  
2014/02/19 02:14:00 Unable to locate exit
[error] client.go:2279 Error getting size: bad file descriptor
core@localhost ~ $ echo $?
0

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r.db('roller').table('app_event').groupedMapReduce(
  function(event) { return event('DateTime').minutes(); },
  function(event) { return 1; },
  function(acc, count) { return acc.add(count); }, 0)

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r.db('roller').table('app_event').filter(function(event) {
  return event("DateTime").minutes().eq(15);
}).count

Return 52

r.db('roller').table('app_event').groupedMapReduce(
  function(event) { return event('DateTime').minutes(); },
  function(event) { return 1; },
  function(acc, event) { acc.add(1); return acc; }, r.expr(0))

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This is a temporary workaround to disable auto updates. As we move out of the alpha there will be a nicer method.

Add a unit file to stop update-engine-reboot-manager

There is a single simple script called "update-engine-reboot-manager" that does an automatic reboot after update-engine applies an update to your CoreOS machine. To stop automatic reboots after an update has been applied you need to stop this daemon. You can do this via a service file that is started at boot.

Create a file called /media/state/units/stop-reboot-manager.service that has the following contents:

[Unit]

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// example: go run ssh.go core myhost:22 "ps aux | head -n 5"
package main

import (
	"log"
	"net"
	"os"

	"code.google.com/p/go.crypto/ssh"
)

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NAME=Rackspace
ID=rackspace
VERSION_ID=168.0.0
PRETTY_NAME="Rackspace Cloud Servers"
HOME_URL="http://www.rackspace.com/cloud/servers/"
BUG_REPORT_URL="https://github.com/coreos/coreos-overlay"

NAME=Brightbox
ID=brightbox
VERSION_ID=168.0.0