First commit : Add first scripts to build an ISO

README.md

@@ -3,3 +3,33 @@
 Cadoles Kubernetes Operating System
 
 a.k.a. CadolesKube/os
+
+Creating a build server for AlpineLinux
+
+On Alpine server run : at-begining.sh to install necessary tools.
+
+Change to the build user :
+
+su - build
+
+Create signing key:
+
+abuild-keygen -i -a (-i installs them in /etc/apk/keys)
+
+Quick check : 
+
+ls -lah /etc/apk/keys/build-xxxxxxxx.rsa.pub
+
+Clone the git repository : 
+
+git clone --depth=1 https://gitlab.alpinelinux.org/alpine/aports.git
+
+Update : 
+
+sudo apk update
+
+Copy script create-iso.sh in /home/build
+
+You must enter a profile name to launch the creation of the iso. The iso is built with Edge sources to have Kubernetes tools. 
+For example ./create-iso.sh myKube.
+The iso is generated in the ~/iso folder.

at-begining.sh

@@ -0,0 +1,24 @@
+#!/bin/sh
+
+# Install base builder 
+if test $(id -u) -ne 0; then
+  echo "Be root is better for this action !!"
+  exit 1
+fi
+
+if test ! -f /etc/apk/world; then
+  echo "Maybe, You should try on an Alpine !"
+  exit 1
+fi
+
+# Packages needed
+apk add alpine-sdk build-base apk-tools alpine-conf busybox fakeroot syslinux xorriso squashfs-tools sudo
+
+# User setup
+adduser build -G abuild
+
+# Grant unrestricted sudo to abuild group
+echo "%abuild ALL=(ALL) ALL" > /etc/sudoers.d/abuild
+
+# Also, update apk
+apk update

create-iso.sh

@@ -0,0 +1,168 @@
+#!/bin/sh
+
+#if [[ -z $1  || -z  $2 ]]; then
+if [[ -z $1 ]]; then
+        echo -e "ERREUR : paramétre(s) manquant(s) "
+        echo -e "Passer en paramétre : "
+	echo -e "1. Nom du profil (ex : kubauto)"
+#	echo -e "2. Version de l'Alpine (forcé à edge pour le moment)"
+        echo ""
+        exit 1
+else
+PROFILENAME=$1
+ALPINE_VERSION=edge
+export $PROFILENAME
+
+
+cat << EOF > ~/aports/scripts/mkimg.$PROFILENAME.sh
+profile_$PROFILENAME() {
+        profile_standard
+        kernel_cmdline="unionfs_size=512M console=tty0 console=ttyS0,115200"
+        syslinux_serial="0 115200"
+        apks="\$apks mtools parted rsync vim util-linux curl coreutils strace dhcp dhcpcd kubeadm lvm2 dfc cni-plugin-flannel cni-plugins
+	flannel flannel-contrib-cni kubelet kubeadm kubectl uuidgen docker docker-compose
+                "
+        local _k _a
+        for _k in \$kernel_flavors; do
+                apks="\$apks linux-\$_k"
+                for _a in \$kernel_addons; do
+                        apks="\$apks \$_a-\$_k"
+                done
+        done
+        apks="\$apks linux-firmware"
+	hostname="$PROFILENAME"
+	apkovl="genapkovl-$PROFILENAME.sh"
+}
+EOF
+
+chmod +x ~/aports/scripts/mkimg.$PROFILENAME.sh
+
+cat << 'EOP' > ~/aports/scripts/genapkovl-$PROFILENAME.sh
+#!/bin/sh -e
+
+HOSTNAME="$1"
+if [ -z "$HOSTNAME" ]; then
+	echo "usage: $0 hostname"
+	exit 1
+fi
+
+cleanup() {
+	rm -rf "$tmp"
+}
+
+makefile() {
+	OWNER="$1"
+	PERMS="$2"
+	FILENAME="$3"
+	cat > "$FILENAME"
+	chown "$OWNER" "$FILENAME"
+	chmod "$PERMS" "$FILENAME"
+}
+
+rc_add() {
+	mkdir -p "$tmp"/etc/runlevels/"$2"
+	ln -sf /etc/init.d/"$1" "$tmp"/etc/runlevels/"$2"/"$1"
+}
+
+tmp="$(mktemp -d)"
+trap cleanup EXIT
+
+mkdir -p "$tmp"/etc
+makefile root:root 0644 "$tmp"/etc/hostname <<EOF
+$HOSTNAME
+EOF
+
+mkdir -p "$tmp"/etc/network
+makefile root:root 0644 "$tmp"/etc/network/interfaces <<EOF
+auto lo
+iface lo inet loopback
+
+auto eth0
+iface eth0 inet dhcp
+EOF
+
+mkdir -p "$tmp/root/.ssh"
+mkdir -p "$tmp/etc/apk"
+echo '/media/cdrom' >> "$tmp/etc/apk/repositories"
+echo 'http://dl-cdn.alpinelinux.org/alpine/$ALPINE_VERSION/main' >> "$tmp/etc/apk/repositories"
+echo 'http://dl-cdn.alpinelinux.org/alpine/$ALPINE_VERSION/community' >> "$tmp/etc/apk/repositories"
+echo 'http://dl-cdn.alpinelinux.org/alpine/$ALPINE_VERSION/testing' >> "$tmp/etc/apk/repositories"
+
+mkdir -p "$tmp"/etc/apk
+makefile root:root 0644 "$tmp"/etc/apk/world <<EOF
+alpine-base
+util-linux
+xfsprogs
+vim
+dfc
+cni-plugin-flannel
+cni-plugins
+flannel
+flannel-contrib-cni
+kubelet
+kubeadm
+kubectl
+uuidgen
+docker
+docker-compose
+EOF
+
+mkdir -p "$tmp"/etc/local.d
+# =------------------------------------------------------------=
+# Hello preseed script, my new friend.
+#
+# Note the single quotes around the EOF, to avoid evaluation
+# at the time genapkovl runs.
+# =------------------------------------------------------------=
+makefile root:root 0755 "$tmp"/etc/local.d/preseed.start <<'EOF'
+#!/bin/sh
+# Fail fast, if we make it onto a live system.
+test "$(hostname)" = "" || exit 111
+# Here would be the preseed script in earnest. One that sets
+# the hostname to something else than `preseed`, or at least
+# makes sure the /etc/local.d/preseed.start isn't carried over.
+# Lest you're a glutton for punishment.
+echo "preseeded at $(date)" >> /root/preseeded.txt
+EOF
+
+rc_add devfs sysinit
+rc_add dmesg sysinit
+rc_add mdev sysinit
+rc_add hwdrivers sysinit
+rc_add modloop sysinit
+
+rc_add hwclock boot
+rc_add modules boot
+rc_add sysctl boot
+rc_add hostname boot
+rc_add bootmisc boot
+rc_add syslog boot
+# we want our preseed to run & have network while at it
+rc_add networking boot
+rc_add local boot
+
+rc_add mount-ro shutdown
+rc_add killprocs shutdown
+rc_add savecache shutdown
+
+tar -c -C "$tmp" etc | gzip -9n > $HOSTNAME.apkovl.tar.gz
+EOP
+chmod +x ~/aports/scripts/genapkovl-$PROFILENAME.sh
+
+# Create output dir
+if test ! -d ~/iso; then
+  echo "Creating output dir"
+  mkdir -p ~/iso
+fi
+
+echo "ISO generation"
+cd ~/aports/scripts/
+sh mkimage.sh --tag $ALPINE_VERSION \
+ --outdir ~/iso \
+ --arch x86_64 \
+ --repository http://dl-cdn.alpinelinux.org/alpine/$ALPINE_VERSION/main \
+ --repository http://dl-cdn.alpinelinux.org/alpine/$ALPINE_VERSION/community \
+ --repository http://dl-cdn.alpinelinux.org/alpine/$ALPINE_VERSION/testing \
+ --profile $PROFILENAME
+
+fi