jbeda

We assume we have a set of master nodes (master-{1..N}) and a set of worker nodes (worker-{1..M}). We also assume that the container runtime (Docker, rkt) is already installed. For now, also assume that networking is configured. In my mind it is an open issue how much networking should be driven by kubernetes.

workstation$ ssh master-1

Start the kubelet. Here we just start it directly in the background for simplicity.

jbeda

gcloud compute instances describe \
  --zone $(/usr/share/google/get_metadata_value zone | cut -d / -f 4) \
  $(/usr/share/google/get_metadata_value hostname | cut -d . -f 1)

jbeda

NB: This is a stream of consciousness after a minimum of thought.  It is possible that the graphviz community has already been over all of this.  Please don't take this too seriously.

Graphviz is awesome.  It allows you to logically describe a graph and then lay it out.

Graphviz is one of the most frustrating pieces of software I've ever used.  It is easy to get everything you *want* in the diagram but increadibly hard to make it actually look the way you imagine it.

The fundamental problem, in my mind, is that there is an unfortunate incosistency around subgraphs.  Most of the layout algorithms tend to do global layout when complex diagrams often times require different layout algorithms for different parts of the project.

To fix this I'd do the following:
* Allow true subgraph layout of nodes and edges completely contained in the subgraph.  Allow users to easily mix and match layout algorithms in the same diagram.

jbeda

user  nginx;
worker_processes  1;

error_log  /var/log/nginx/error.log debug;
pid        /var/run/nginx.pid;


events {
    worker_connections  1024;
}

jbeda

<?xml version="1.0" encoding="utf-8"?>
<?mso-application progid="Word.Document"?>
<pkg:package xmlns:pkg="http://schemas.microsoft.com/office/2006/xmlPackage">
  <pkg:part pkg:contentType="application/vnd.openxmlformats-package.relationships+xml" pkg:name="/_rels/.rels" pkg:padding="512">
    <pkg:xmlData>
      <Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">
        <Relationship Id="rId1" Target="word/document.xml" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument"/>
      </Relationships>
    </pkg:xmlData>
  </pkg:part>

jbeda

This is taken directly from Figure 5.2 in http://nixos.org/~eelco/pubs/phd-thesis.pdf. It is presented here to be more directly linkable.

serialise(fso) = str("nix-archive-1") + serialise1(fso)

serialise1(fso) = str("(") + seralise2(fso) + str(")")

serialise2(type=Regular, exec, contents) =
  str("type") + str("regular")
 + (

jbeda

[jbeda@web:/tmp/foo]$ mkdir -p reala/a
[jbeda@web:/tmp/foo]$ mkdir -p realb/b
[jbeda@web:/tmp/foo]$ mkdir virtual
[jbeda@web:/tmp/foo]$ ln -s v^Ctual ../
[jbeda@web:/tmp/foo]$ cd virtual/
[jbeda@web:/tmp/foo/virtual]$ ln -s ../reala/a a
[jbeda@web:/tmp/foo/virtual]$ ln -s ../realb/b b
[jbeda@web:/tmp/foo/virtual]$ cd a
[jbeda@web:/tmp/foo/virtual/a]$ pwd
/tmp/foo/virtual/a

jbeda

### Keybase proof

I hereby claim:

  * I am jbeda on github.
  * I am jbeda (https://keybase.io/jbeda) on keybase.
  * I have a public key whose fingerprint is 5C24 BBED 521C DD97 489D  6490 01AD FF89 FA0B 63B6

To claim this, I am signing this object:

jbeda

$ gsutil ls -R gs://kubernetes-release/release/v0.5.4 | sed 's|gs://kubernetes-release|https://storage.googleapis.com/kubernetes-release|; /^.*:$/d; /^$/d'
https://storage.googleapis.com/kubernetes-release/release/v0.5.4/kubernetes-client-darwin-386.tar.gz
https://storage.googleapis.com/kubernetes-release/release/v0.5.4/kubernetes-client-darwin-amd64.tar.gz
https://storage.googleapis.com/kubernetes-release/release/v0.5.4/kubernetes-client-linux-386.tar.gz
https://storage.googleapis.com/kubernetes-release/release/v0.5.4/kubernetes-client-linux-amd64.tar.gz
https://storage.googleapis.com/kubernetes-release/release/v0.5.4/kubernetes-client-linux-arm.tar.gz
https://storage.googleapis.com/kubernetes-release/release/v0.5.4/kubernetes-salt.tar.gz
https://storage.googleapis.com/kubernetes-release/release/v0.5.4/kubernetes-server-linux-amd64.tar.gz
https://storage.googleapis.com/kubernetes-release/release/v0.5.4/kubernetes.tar.gz
https://storage.googleapis.com/kubernetes-release/release/v0.5.4/bin/darwin/386/kubecfg

jbeda

function increment_ipv4 {
  local ip_base=$1
  local incr_amount=$2
  local -a ip_components
  local ip_regex="([0-9]+).([0-9]+).([0-9]+).([0-9]+)"
  [[ $ip_base =~ $ip_regex ]]
  ip_components=("${BASH_REMATCH[1]}" "${BASH_REMATCH[2]}" "${BASH_REMATCH[3]}" "${BASH_REMATCH[4]}")
  ip_dec=0
  local comp
  for comp in "${ip_components[@]}"; do