init commit
This commit is contained in:
72
provision/base.sh
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72
provision/base.sh
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@@ -0,0 +1,72 @@
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#!/bin/bash
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set -euo pipefail
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#
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# Helper functions
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#
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declare -i term_width=80
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h1() {
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declare border padding text
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border='\e[1;34m'"$(printf '=%.0s' $(seq 1 "$term_width"))"'\e[0m'
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padding="$(printf ' %.0s' $(seq 1 $(((term_width - $(wc -m <<<"$*")) / 2))))"
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text="\\e[1m$*\\e[0m"
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echo -e "$border"
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echo -e "${padding}${text}${padding}"
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echo -e "$border"
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}
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h2() {
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printf '\e[1;33m==>\e[37;1m %s\e[0m\n' "$*"
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}
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export DEBIAN_FRONTEND=noninteractive
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# !!!!!!!!!!!!!!!
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# Wyłącz swap!!
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# swapoff -a
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# sed -i -E 's,^([^#]+\sswap\s.+),#\1,' /etc/fstab
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h1 "Debug networking and system uuid"
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ip addr
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cat /sys/class/dmi/id/product_uuid
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h1 "Prepare base system"
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h2 "Install applications and utils"
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# update the package cache.
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apt-get update
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apt-get install -y --no-install-recommends jq curl bash-completion vim tcpdump traceroute iptables
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h2 "Configure vim"
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cat >/etc/vim/vimrc.local <<'EOF'
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syntax on
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set background=dark
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set esckeys
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set ruler
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set laststatus=2
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set nobackup
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EOF
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h2 "Configure shell"
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cat >/etc/profile.d/login.sh <<'EOF'
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[[ "$-" != *i* ]] && return
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export EDITOR=vim
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export PAGER=less
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alias l='ls -lF --color'
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alias ll='l -a'
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alias h='history 25'
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alias j='jobs -l'
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EOF
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cat >/etc/inputrc <<'EOF'
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set input-meta on
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set output-meta on
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set show-all-if-ambiguous on
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set completion-ignore-case on
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"\e[A": history-search-backward
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"\e[B": history-search-forward
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"\eOD": backward-word
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"\eOC": forward-word
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EOF
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42
provision/etcdctl.sh
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42
provision/etcdctl.sh
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@@ -0,0 +1,42 @@
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#!/bin/bash
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set -euo pipefail
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#
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# Helper functions
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#
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declare -i term_width=80
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h1() {
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declare border padding text
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border='\e[1;34m'"$(printf '=%.0s' $(seq 1 "$term_width"))"'\e[0m'
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padding="$(printf ' %.0s' $(seq 1 $(((term_width - $(wc -m <<<"$*")) / 2))))"
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text="\\e[1m$*\\e[0m"
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echo -e "$border"
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echo -e "${padding}${text}${padding}"
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echo -e "$border"
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}
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h2() {
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printf '\e[1;33m==>\e[37;1m %s\e[0m\n' "$*"
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}
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etcd_version="${1:-v3.4.16}"; shift || true
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h1 "Install etcd"
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h2 "Version: ${etcd_version}"
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# install the binaries.
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url="https://github.com/etcd-io/etcd/releases/download/$etcd_version/etcd-$etcd_version-linux-amd64.tar.gz"
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filename="$(basename "$url")"
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wget -q "$url"
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rm -rf etcd && mkdir etcd
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tar xf "$filename" --strip-components 1 -C etcd
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install etcd/etcdctl /usr/local/bin
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rm -rf "$filename" etcd
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h2 "Configure envs to access etcd"
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cat >/etc/profile.d/etcdctl.sh <<'EOF'
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export ETCDCTL_CACERT=/var/lib/rancher/rke2/server/tls/etcd/server-ca.crt
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export ETCDCTL_CERT=/var/lib/rancher/rke2/server/tls/etcd/server-client.crt
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export ETCDCTL_KEY=/var/lib/rancher/rke2/server/tls/etcd/server-client.key
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EOF
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100
provision/example-app.sh
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100
provision/example-app.sh
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@@ -0,0 +1,100 @@
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#!/bin/bash
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set -euo pipefail
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#
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# Helper functions
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#
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declare -i term_width=80
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h1() {
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declare border padding text
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border='\e[1;34m'"$(printf '=%.0s' $(seq 1 "$term_width"))"'\e[0m'
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padding="$(printf ' %.0s' $(seq 1 $(((term_width - $(wc -m <<<"$*")) / 2))))"
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text="\\e[1m$*\\e[0m"
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echo -e "$border"
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echo -e "${padding}${text}${padding}"
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echo -e "$border"
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}
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h2() {
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printf '\e[1;33m==>\e[37;1m %s\e[0m\n' "$*"
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}
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domain="$(hostname --domain)"
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h1 "Deploy example app"
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# deploy.
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kubectl apply -f - <<EOF
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---
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# see https://kubernetes.io/docs/concepts/services-networking/ingress/
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# see https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.21/#ingress-v1-networking-k8s-io
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apiVersion: networking.k8s.io/v1
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kind: Ingress
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metadata:
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name: example-app
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spec:
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rules:
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- host: example-app.$domain
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http:
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paths:
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- path: /
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pathType: Prefix
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backend:
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service:
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name: example-app
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port:
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name: web
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---
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# see https://kubernetes.io/docs/concepts/services-networking/service/
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# see https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.21/#service-v1-core
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apiVersion: v1
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kind: Service
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metadata:
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name: example-app
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spec:
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selector:
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app: example-app
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type: ClusterIP
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ports:
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- name: web
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protocol: TCP
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port: 80
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targetPort: web
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---
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# see https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/
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# see https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.21/#daemonset-v1-apps
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# see https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.21/#podtemplatespec-v1-core
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# see https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.21/#container-v1-core
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apiVersion: apps/v1
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kind: DaemonSet
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metadata:
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name: example-app
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spec:
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selector:
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matchLabels:
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app: example-app
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template:
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metadata:
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labels:
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app: example-app
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spec:
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nodeSelector:
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kubernetes.io/os: linux
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containers:
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- name: example-app
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image: ruilopes/example-docker-buildx-go:v1.2.0
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args:
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- -listen=:8000
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ports:
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- name: web
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containerPort: 8000
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resources:
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requests:
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memory: 20Mi
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cpu: "0.1"
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limits:
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memory: 20Mi
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cpu: "0.1"
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EOF
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35
provision/k9s.sh
Normal file
35
provision/k9s.sh
Normal file
@@ -0,0 +1,35 @@
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#!/bin/bash
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set -euo pipefail
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#
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# Helper functions
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#
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declare -i term_width=80
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h1() {
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declare border padding text
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border='\e[1;34m'"$(printf '=%.0s' $(seq 1 "$term_width"))"'\e[0m'
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padding="$(printf ' %.0s' $(seq 1 $(((term_width - $(wc -m <<<"$*")) / 2))))"
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text="\\e[1m$*\\e[0m"
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echo -e "$border"
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echo -e "${padding}${text}${padding}"
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echo -e "$border"
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}
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h2() {
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printf '\e[1;33m==>\e[37;1m %s\e[0m\n' "$*"
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}
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k9s_version="${1:-v0.24.15}"; shift || true
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h1 "Install k9s"
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h2 "Version: ${k9s_version}"
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# download and install.
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wget -qO- "https://github.com/derailed/k9s/releases/download/$k9s_version/k9s_Linux_x86_64.tar.gz" \
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| tar xzf - k9s
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install -m 755 k9s /usr/local/bin/
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rm k9s
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# try it.
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k9s version
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104
provision/rke2-agent.sh
Normal file
104
provision/rke2-agent.sh
Normal file
@@ -0,0 +1,104 @@
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#!/bin/bash
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set -euo pipefail
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#
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# Helper functions
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#
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declare -i term_width=80
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h1() {
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declare border padding text
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border='\e[1;34m'"$(printf '=%.0s' $(seq 1 "$term_width"))"'\e[0m'
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padding="$(printf ' %.0s' $(seq 1 $(((term_width - $(wc -m <<<"$*")) / 2))))"
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text="\\e[1m$*\\e[0m"
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echo -e "$border"
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echo -e "${padding}${text}${padding}"
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echo -e "$border"
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}
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h2() {
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printf '\e[1;33m==>\e[37;1m %s\e[0m\n' "$*"
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}
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rke2_channel="$1"; shift
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rke2_version="$1"; shift
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rke2_server_url="$1"; shift
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ip_address="$1"; shift
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cat >/etc/motd <<'EOF'
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_ ____ _
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_ __| | _____|___ \ __ _ __ _ ___ _ __ | |_
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||||
| '__| |/ / _ \ __) | / _` |/ _` |/ _ \ '_ \| __|
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||||
| | | < __// __/ | (_| | (_| | __/ | | | |_
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|_| |_|\_\___|_____(_)__,_|\__, |\___|_| |_|\__|
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|___/
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EOF
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h1 "Install rke2 agent"
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h2 "Version: ${rke2_version}"
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h2 "Server: ${rke2_server_url}"
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# install rke2 agent.
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# see https://docs.rke2.io/install/install_options/install_options/
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# see https://docs.rke2.io/install/install_options/linux_agent_config/
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install -d -m 700 /etc/rancher/rke2
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install /dev/null -m 600 /etc/rancher/rke2/config.yaml
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cat >>/etc/rancher/rke2/config.yaml <<EOF
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server: $rke2_server_url
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token: $(cat /vagrant/tmp/node-token)
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||||
node-ip: $ip_address
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||||
EOF
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||||
curl -sfL https://raw.githubusercontent.com/rancher/rke2/$rke2_version/install.sh \
|
||||
| \
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INSTALL_RKE2_CHANNEL="$rke2_channel" \
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INSTALL_RKE2_VERSION="$rke2_version" \
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INSTALL_RKE2_TYPE="agent" \
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sh -
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||||
h2 "Start rke2 agent service"
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||||
systemctl cat rke2-agent
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||||
systemctl enable rke2-agent.service
|
||||
systemctl start rke2-agent.service
|
||||
|
||||
|
||||
h2 "Configure system path for rke2"
|
||||
# symlink the utilities and setup the environment variables to use them.
|
||||
# NB kubectl should not be available in worker nodes as rke2 does not
|
||||
# install a kubeconfig.
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||||
ln -fs /var/lib/rancher/rke2/bin/{kubectl,crictl,ctr} /usr/local/bin/
|
||||
cat >/etc/profile.d/01-rke2.sh <<'EOF'
|
||||
export CONTAINERD_ADDRESS=/run/k3s/containerd/containerd.sock
|
||||
export CONTAINERD_NAMESPACE=k8s.io
|
||||
export CRI_CONFIG_FILE=/var/lib/rancher/rke2/agent/etc/crictl.yaml
|
||||
EOF
|
||||
source /etc/profile.d/01-rke2.sh
|
||||
|
||||
# NB do not try to use kubectl on a agent node, as kubectl does not work on a
|
||||
# agent node without a proper kubectl configuration (which you could copy
|
||||
# from the server, but we do not do it here).
|
||||
|
||||
# install the bash completion scripts.
|
||||
h2 "Bash configure"
|
||||
crictl completion bash >/usr/share/bash-completion/completions/crictl
|
||||
kubectl completion bash >/usr/share/bash-completion/completions/kubectl
|
||||
|
||||
# list runnnig pods.
|
||||
crictl pods
|
||||
|
||||
# list running containers.
|
||||
crictl ps
|
||||
ctr containers ls
|
||||
|
||||
# show listening ports.
|
||||
ss -n --tcp --listening --processes
|
||||
|
||||
# show network routes.
|
||||
ip route
|
||||
|
||||
# show memory info.
|
||||
free
|
||||
|
||||
# show versions.
|
||||
crictl version
|
||||
ctr version
|
||||
223
provision/rke2-server.sh
Normal file
223
provision/rke2-server.sh
Normal file
@@ -0,0 +1,223 @@
|
||||
#!/bin/bash
|
||||
set -euo pipefail
|
||||
#
|
||||
# Helper functions
|
||||
#
|
||||
declare -i term_width=80
|
||||
|
||||
h1() {
|
||||
declare border padding text
|
||||
border='\e[1;34m'"$(printf '=%.0s' $(seq 1 "$term_width"))"'\e[0m'
|
||||
padding="$(printf ' %.0s' $(seq 1 $(((term_width - $(wc -m <<<"$*")) / 2))))"
|
||||
text="\\e[1m$*\\e[0m"
|
||||
echo -e "$border"
|
||||
echo -e "${padding}${text}${padding}"
|
||||
echo -e "$border"
|
||||
}
|
||||
|
||||
h2() {
|
||||
printf '\e[1;33m==>\e[37;1m %s\e[0m\n' "$*"
|
||||
}
|
||||
|
||||
rke2_command="$1"; shift
|
||||
rke2_channel="${1:-latest}"; shift
|
||||
rke2_version="${1:-v1.21.5+rke2r1}"; shift
|
||||
ip_address="$1"; shift
|
||||
krew_version="${1:-v0.4.1}"; shift || true # NB see https://github.com/kubernetes-sigs/krew
|
||||
fqdn="$(hostname --fqdn)"
|
||||
rke2_url="https://server.$(hostname --domain):9345"
|
||||
|
||||
h1 "Install rke2 server"
|
||||
h2 "Version: ${rke2_version}"
|
||||
h2 "Server url: ${rke2_url}"
|
||||
|
||||
cat >/etc/motd <<'EOF'
|
||||
_ ____
|
||||
_ __| | _____|___ \ ___ ___ _ ____ _____ _ __
|
||||
| '__| |/ / _ \ __) | / __|/ _ \ '__\ \ / / _ \ '__|
|
||||
| | | < __// __/ _\__ \ __/ | \ V / __/ |
|
||||
|_| |_|\_\___|_____(_)___/\___|_| \_/ \___|_|
|
||||
|
||||
EOF
|
||||
|
||||
# configure the rke2 server.
|
||||
# see https://docs.rke2.io/install/install_options/install_options/
|
||||
# see https://docs.rke2.io/install/install_options/server_config/
|
||||
install -d -m 700 /etc/rancher/rke2
|
||||
install /dev/null -m 600 /etc/rancher/rke2/config.yaml
|
||||
if [ "$rke2_command" != 'cluster-init' ]; then
|
||||
cat >>/etc/rancher/rke2/config.yaml <<EOF
|
||||
server: $rke2_url
|
||||
token: $(cat /vagrant/tmp/node-token)
|
||||
EOF
|
||||
fi
|
||||
cat >>/etc/rancher/rke2/config.yaml <<EOF
|
||||
node-ip: $ip_address
|
||||
node-taint: CriticalAddonsOnly=true:NoExecute
|
||||
tls-san:
|
||||
- server.$(hostname --domain)
|
||||
- $fqdn
|
||||
cni: calico
|
||||
cluster-cidr: 10.12.0.0/16
|
||||
service-cidr: 10.13.0.0/16
|
||||
cluster-dns: 10.13.0.10
|
||||
cluster-domain: cluster.local
|
||||
EOF
|
||||
|
||||
# install rke2 server.
|
||||
# see https://docs.rke2.io/install/install_options/install_options/
|
||||
# see https://docs.rke2.io/install/install_options/server_config/
|
||||
curl -sfL https://raw.githubusercontent.com/rancher/rke2/$rke2_version/install.sh \
|
||||
| \
|
||||
INSTALL_RKE2_CHANNEL="$rke2_channel" \
|
||||
INSTALL_RKE2_VERSION="$rke2_version" \
|
||||
INSTALL_RKE2_TYPE="server" \
|
||||
sh -
|
||||
|
||||
# start the rke2-server service.
|
||||
systemctl cat rke2-server
|
||||
systemctl enable rke2-server.service
|
||||
systemctl start rke2-server.service
|
||||
|
||||
# symlink the utilities and setup the environment variables to use them.
|
||||
ln -fs /var/lib/rancher/rke2/bin/{kubectl,crictl,ctr} /usr/local/bin/
|
||||
cat >/etc/profile.d/01-rke2.sh <<'EOF'
|
||||
export CONTAINERD_ADDRESS=/run/k3s/containerd/containerd.sock
|
||||
export CONTAINERD_NAMESPACE=k8s.io
|
||||
export CRI_CONFIG_FILE=/var/lib/rancher/rke2/agent/etc/crictl.yaml
|
||||
export KUBECONFIG=/etc/rancher/rke2/rke2.yaml
|
||||
EOF
|
||||
source /etc/profile.d/01-rke2.sh
|
||||
|
||||
# wait for this node to be Ready.
|
||||
# e.g. server Ready control-plane,etcd,master 3m v1.21.5+rke2r1
|
||||
$SHELL -c 'node_name=$(hostname); echo "waiting for node $node_name to be ready..."; while [ -z "$(kubectl get nodes $node_name | grep -E "$node_name\s+Ready\s+")" ]; do sleep 3; done; echo "node ready!"'
|
||||
|
||||
# wait for the kube-dns pod to be Running.
|
||||
# e.g. rke2-coredns-rke2-coredns-7bb4f446c-jksvq 1/1 Running 0 33m
|
||||
$SHELL -c 'while [ -z "$(kubectl get pods --selector k8s-app=kube-dns --namespace kube-system | grep -E "\s+Running\s+")" ]; do sleep 3; done'
|
||||
|
||||
# save the node-token in the host.
|
||||
# NB do not create a token yourself as a simple hex random string, as that will
|
||||
# not include the Cluster CA which means the joining nodes will not
|
||||
# verify the server certificate. rke2 warns about this as:
|
||||
# Cluster CA certificate is not trusted by the host CA bundle, but the
|
||||
# token does not include a CA hash. Use the full token from the server's
|
||||
# node-token file to enable Cluster CA validation
|
||||
if [ "$rke2_command" == 'cluster-init' ]; then
|
||||
install -d /vagrant/tmp
|
||||
cp /var/lib/rancher/rke2/server/node-token /vagrant/tmp/node-token
|
||||
fi
|
||||
|
||||
# install the krew kubectl package manager.
|
||||
echo "installing the krew $krew_version kubectl package manager..."
|
||||
apt-get install -y --no-install-recommends git
|
||||
wget -qO- "https://github.com/kubernetes-sigs/krew/releases/download/$krew_version/krew.tar.gz" | tar xzf - ./krew-linux_amd64
|
||||
wget -q "https://github.com/kubernetes-sigs/krew/releases/download/$krew_version/krew.yaml"
|
||||
./krew-linux_amd64 install --manifest=krew.yaml
|
||||
rm krew-linux_amd64
|
||||
cat >/etc/profile.d/krew.sh <<'EOF'
|
||||
export PATH="${KREW_ROOT:-$HOME/.krew}/bin:$PATH"
|
||||
EOF
|
||||
source /etc/profile.d/krew.sh
|
||||
kubectl krew version
|
||||
|
||||
# install the bash completion scripts.
|
||||
crictl completion bash >/usr/share/bash-completion/completions/crictl
|
||||
kubectl completion bash >/usr/share/bash-completion/completions/kubectl
|
||||
|
||||
# save kubeconfig in the host.
|
||||
if [ "$rke2_command" == 'cluster-init' ]; then
|
||||
mkdir -p /vagrant/tmp
|
||||
python3 - <<EOF
|
||||
import base64
|
||||
import yaml
|
||||
|
||||
d = yaml.load(open('/etc/rancher/rke2/rke2.yaml', 'r'))
|
||||
|
||||
# save cluster ca certificate.
|
||||
for c in d['clusters']:
|
||||
open(f"/vagrant/tmp/{c['name']}-ca-crt.pem", 'wb').write(base64.b64decode(c['cluster']['certificate-authority-data']))
|
||||
|
||||
# save user client certificates.
|
||||
for u in d['users']:
|
||||
open(f"/vagrant/tmp/{u['name']}-crt.pem", 'wb').write(base64.b64decode(u['user']['client-certificate-data']))
|
||||
open(f"/vagrant/tmp/{u['name']}-key.pem", 'wb').write(base64.b64decode(u['user']['client-key-data']))
|
||||
print(f"Kubernetes API Server https://$ip_address:6443 user {u['name']} client certificate in tmp/{u['name']}-*.pem")
|
||||
|
||||
# set the server ip.
|
||||
for c in d['clusters']:
|
||||
c['cluster']['server'] = 'https://$ip_address:6443'
|
||||
|
||||
yaml.dump(d, open('/vagrant/tmp/admin.conf', 'w'), default_flow_style=False)
|
||||
EOF
|
||||
fi
|
||||
|
||||
# show cluster-info.
|
||||
kubectl cluster-info
|
||||
|
||||
# list etcd members.
|
||||
etcdctl --write-out table member list
|
||||
|
||||
# show the endpoint status.
|
||||
etcdctl --write-out table endpoint status
|
||||
|
||||
# list nodes.
|
||||
kubectl get nodes -o wide
|
||||
|
||||
# rbac info.
|
||||
kubectl get serviceaccount --all-namespaces
|
||||
kubectl get role --all-namespaces
|
||||
kubectl get rolebinding --all-namespaces
|
||||
kubectl get rolebinding --all-namespaces -o json | jq .items[].subjects
|
||||
kubectl get clusterrole --all-namespaces
|
||||
kubectl get clusterrolebinding --all-namespaces
|
||||
kubectl get clusterrolebinding --all-namespaces -o json | jq .items[].subjects
|
||||
|
||||
# rbac access matrix.
|
||||
# see https://github.com/corneliusweig/rakkess/blob/master/doc/USAGE.md
|
||||
kubectl krew install access-matrix
|
||||
kubectl access-matrix version --full
|
||||
kubectl access-matrix # at cluster scope.
|
||||
kubectl access-matrix --namespace default
|
||||
kubectl access-matrix --sa kubernetes-dashboard --namespace kubernetes-dashboard
|
||||
|
||||
# list system secrets.
|
||||
kubectl -n kube-system get secret
|
||||
|
||||
# list all objects.
|
||||
# NB without this hugly redirect the kubectl output will be all messed
|
||||
# when used from a vagrant session.
|
||||
kubectl get all --all-namespaces
|
||||
|
||||
# really get all objects.
|
||||
# see https://github.com/corneliusweig/ketall/blob/master/doc/USAGE.md
|
||||
kubectl krew install get-all
|
||||
kubectl get-all
|
||||
|
||||
# list services.
|
||||
kubectl get svc
|
||||
|
||||
# list running pods.
|
||||
kubectl get pods --all-namespaces -o wide
|
||||
|
||||
# list runnnig pods.
|
||||
crictl pods
|
||||
|
||||
# list running containers.
|
||||
crictl ps
|
||||
ctr containers ls
|
||||
|
||||
# show listening ports.
|
||||
ss -n --tcp --listening --processes
|
||||
|
||||
# show network routes.
|
||||
ip route
|
||||
|
||||
# show memory info.
|
||||
free
|
||||
|
||||
# show versions.
|
||||
kubectl version
|
||||
crictl version
|
||||
ctr version
|
||||
Reference in New Issue
Block a user