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--- docker_advanced_k8s_intro [2020/04/20 11:36] – created andonovj
+++ docker_advanced_k8s_intro [2020/05/30 15:17] (current) – [Overview] andonovj
@@ Line 3: / Line 3: @@
 So let's get it going. We will use 3 machines:
-  - 1 Master
+  * 1 Master
-  - 2 Nodes (not slaves or workers)
+  * 2 Nodes (not slaves or workers)
-To configure our kubernetes, but first, let's configure the repo.
+To configure our kubernetes, we have to install the following:
+  * Docker (or rkt) - Container runtime.
+  * Kubelet - Kubernetes Node Agent.
+  * Kubeadm - The tool used to build the cluster.
+  * Kubectl - The Kubernetes Client
+  * CNI - Install support for CNI network (Container network Interface / Spec or Model for Kubernetes Network)
+Furhtermore, Kubernetes have various objects, but let's examine the main ones:
+  * Pods
+  * Replication Controllers / Replication Sets (When Deployment)
+  * ClusterIP
+=====Package Installation=====
+To install the packages we have to:
+  - Configure the Repos
+  - Actuall install the packages.
+So let's get going :)
+====Configure the Repos====
 The repo is configured very easy using the following script:
@@ Line 19: / Line 40: @@
 Please bare in mind, this is for Ubuntu Xenial 64. If you have different distribution please adjust....the last entry :)
+<sxh bash>
+vagrant@node-1:~$ sudo su -
+root@node-1:~# apt-get update && apt-get install -y apt-transport-https
+% [Working]
+Hit:1 http://archive.ubuntu.com/ubuntu xenial InRelease
+Get:2 http://security.ubuntu.com/ubuntu xenial-security InRelease [109 kB]
+Get:3 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [109 kB]
+Get:4 http://archive.ubuntu.com/ubuntu xenial-backports InRelease [107 kB]
+Get:5 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages [850 kB]
+Get:6 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages [7,532 kB]
+Get:7 http://security.ubuntu.com/ubuntu xenial-security/universe amd64 Packages [489 kB]
+Get:8 http://security.ubuntu.com/ubuntu xenial-security/universe Translation-en [200 kB]
+Get:9 http://security.ubuntu.com/ubuntu xenial-security/multiverse amd64 Packages [5,728 B]
+Get:10 http://security.ubuntu.com/ubuntu xenial-security/multiverse Translation-en [2,708 B]
+Get:11 http://archive.ubuntu.com/ubuntu xenial/universe Translation-en [4,354 kB]
+Get:12 http://archive.ubuntu.com/ubuntu xenial/multiverse amd64 Packages [144 kB]
+Get:13 http://archive.ubuntu.com/ubuntu xenial/multiverse Translation-en [106 kB]
+Get:14 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages [1,129 kB]
+Get:15 http://archive.ubuntu.com/ubuntu xenial-updates/universe amd64 Packages [796 kB]
+Get:16 http://archive.ubuntu.com/ubuntu xenial-updates/universe Translation-en [333 kB]
+Get:17 http://archive.ubuntu.com/ubuntu xenial-updates/multiverse amd64 Packages [16.8 kB]
+Get:18 http://archive.ubuntu.com/ubuntu xenial-updates/multiverse Translation-en [8,468 B]
+Get:19 http://archive.ubuntu.com/ubuntu xenial-backports/main amd64 Packages [7,280 B]
+Get:20 http://archive.ubuntu.com/ubuntu xenial-backports/main Translation-en [4,456 B]
+Get:21 http://archive.ubuntu.com/ubuntu xenial-backports/universe amd64 Packages [8,064 B]
+Get:22 http://archive.ubuntu.com/ubuntu xenial-backports/universe Translation-en [4,328 B]
+Fetched 16.3 MB in 12s (1,318 kB/s)
+Reading package lists... Done
+Reading package lists... Done
+Building dependency tree
+Reading state information... Done
+apt-transport-https is already the newest version (1.2.32).
+upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
+root@node-1:~# curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -
+OK
+root@node-1:~# cat <<EOF >/etc/apt/sources.list.d/kubernetes.list
+> deb http://apt.kubernetes.io/ kubernetes-xenial main
+> EOF
+root@node-1:~# apt-get update
+Hit:1 http://archive.ubuntu.com/ubuntu xenial InRelease
+Hit:3 http://archive.ubuntu.com/ubuntu xenial-updates InRelease
+Hit:4 http://archive.ubuntu.com/ubuntu xenial-backports InRelease
+Hit:5 http://security.ubuntu.com/ubuntu xenial-security InRelease
+Get:2 https://packages.cloud.google.com/apt kubernetes-xenial InRelease [8,993 B]
+Get:6 https://packages.cloud.google.com/apt kubernetes-xenial/main amd64 Packages [35.3 kB]
+Fetched 44.3 kB in 2s (20.6 kB/s)
+Reading package lists... Done
+root@node-1:~#
+</sxh>
+Please run this command on all 3 machines.
+====Install the packages====
+So let's install the packages now:
+<Code:shell|Install packages>
+root@k8s-master:~# apt-get install -y docker.io kubeadm kubectl kubelet kubernetes-cni
+Reading package lists... Done
+Building dependency tree
+Reading state information... Done
+The following additional packages will be installed:
+  bridge-utils cgroupfs-mount conntrack containerd cri-tools ebtables pigz runc socat ubuntu-fan
+Suggested packages:
+  mountall aufs-tools debootstrap docker-doc rinse zfs-fuse | zfsutils
+The following NEW packages will be installed:
+  bridge-utils cgroupfs-mount conntrack containerd cri-tools docker.io ebtables kubeadm kubectl kubelet kubernetes-cni pigz runc socat ubuntu-fan
+upgraded, 15 newly installed, 0 to remove and 0 not upgraded.
+Need to get 104 MB of archives.
+After this operation, 532 MB of additional disk space will be used.
+Do you want to continue? [Y/n] y
+Get:1 http://archive.ubuntu.com/ubuntu xenial/universe amd64 pigz amd64 2.3.1-2 [61.1 kB]
+Get:2 http://archive.ubuntu.com/ubuntu xenial/main amd64 bridge-utils amd64 1.5-9ubuntu1 [28.6 kB]
+**************************************************************************************************************
+</Code>
+Please execute that on all 3 machines