From bb55463aee35dc4bafd70161b58161c8341b4afb Mon Sep 17 00:00:00 2001 From: Julien Girardin Date: Fri, 6 Dec 2019 16:40:00 +0100 Subject: [PATCH] Add a Pod anatomy set of slides --- slides/images/kubernetes_pods.drawio | 1 + slides/images/kubernetes_pods.svg | 3 +++ slides/intro-fullday.yml | 1 + slides/k8s/Pods_anatomy.md | 27 +++++++++++++++++++++++++++ 4 files changed, 32 insertions(+) create mode 100644 slides/images/kubernetes_pods.drawio create mode 100644 slides/images/kubernetes_pods.svg create mode 100644 slides/k8s/Pods_anatomy.md diff --git a/slides/images/kubernetes_pods.drawio b/slides/images/kubernetes_pods.drawio new file mode 100644 index 00000000..05573b10 --- /dev/null +++ b/slides/images/kubernetes_pods.drawio @@ -0,0 +1 @@ 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 \ No newline at end of file diff --git a/slides/images/kubernetes_pods.svg b/slides/images/kubernetes_pods.svg new file mode 100644 index 00000000..b878be95 --- /dev/null +++ b/slides/images/kubernetes_pods.svg @@ -0,0 +1,3 @@ + + +
host (/var/lib/kubelet/...)
<div>host (/var/lib/kubelet/...)<br></div>
Pod
Pod
pause container
pause container
nginx
nginx
prometheus exporter
prometheus exporter
Network & IPC
namespace sharing
[Not supported by viewer]
:80
:80
private IP
private IP \ No newline at end of file diff --git a/slides/intro-fullday.yml b/slides/intro-fullday.yml index c0d73495..1196b7fc 100644 --- a/slides/intro-fullday.yml +++ b/slides/intro-fullday.yml @@ -65,6 +65,7 @@ chapters: - containers/Logging.md - - containers/Container_Engines.md + - k8s/Pods_anatomy.md #- containers/Ecosystem.md - containers/Orchestration_Overview.md - shared/thankyou.md diff --git a/slides/k8s/Pods_anatomy.md b/slides/k8s/Pods_anatomy.md new file mode 100644 index 00000000..6c4db842 --- /dev/null +++ b/slides/k8s/Pods_anatomy.md @@ -0,0 +1,27 @@ +# container super-structure (Pods) + +A container super-structure supported by many container engine seems to emerge, +we will see how it maps in the docker worlds + + + +--- +class: pic + +## Pod + +![Pods](images/kubernetes_pods.svg) +--- +# Anatomy of a Pod + +- The containers inside a pod share the network namespace (`--net=container:`) + + => the one of the "pause" containers + +- This means that if the container "pause" is killed all other container are killed + +- This is the reason for this container to do nothing but being alive + +- Containers can contact other container port via `localhost` + +- Containers don't share filesystem except the volumes you want to mount on each of them