install_ripe.sh

install_ripe.sh

#!/bin/bash
set -e

# constants
MIRROR='http://mirror.us.leaseweb.net/centos/'
HOSTNAME="$(hostname)"
SSH_KEYS="$(cat /root/.ssh/authorized_keys)"

function decompress_initrd() {
    local initrd_tmp="$(mktemp)"
    wget -O "${initrd_tmp}" "${MIRROR}7/os/x86_64/isolinux/initrd.img"
    wget -O '/boot/vmlinuz_ripe' "${MIRROR}7/os/x86_64/isolinux/vmlinuz"

    local initrd_type="$(file ${initrd_tmp} |grep -o ':.*compressed data' |cut -d' ' -f2 |sed -r 's/(.*)/\L\1/' |head -n1)"
    [[ -z "$initrd_type" ]] && echo "Detect compressed type fail." && exit 1;
    local initrd_compressed='0'
    for comp_type in `echo -en 'gzip\nlzma\nxz'`
    do
        if [[ "${initrd_type}" == "${comp_type}" ]]; then
        initrd_compressed='1'
        if [[ "${comp_type}" == 'gzip' ]]; then
            initrd_new="${initrd_tmp}.gz"
        else
            initrd_new="${initrd_tmp}.${comp_type}"
        fi
        mv -f "${initrd_tmp}" "${initrd_new}"
        break;
        fi
    done
    [[ "$initrd_compressed" != '1' ]] && echo "Detect compressed type not support." && exit 1;
    [[ "$comp_type" == 'lzma' ]] && decompress_cmd='xz --format=lzma --decompress';
    [[ "$comp_type" == 'xz' ]] && decompress_cmd='xz --decompress';
    [[ "$comp_type" == 'gzip' ]] && decompress_cmd='gzip -d';

    $decompress_cmd < "${initrd_new}" | cpio --extract --verbose --make-directories --no-absolute-filenames >>/dev/null 2>&1
    rm -rf "${initrd_new}" "${initrd_tmp}"
}

function build_kickstart() {
cat > ks.cfg <<EOF
text
skipx

install
lang en_US.UTF-8
keyboard us
rootpw --iscrypted !! --lock
firewall --service=ssh
timezone --utc UTC
bootloader --location=mbr --append="crashkernel=auto"
clearpart --drives=/dev/vda --all --initlabel
zerombr
part /boot --fstype=ext4 --size=1024 --ondisk=/dev/vda
part pv.01 --size=1 --grow --ondisk=/dev/vda
volgroup vg01 --pesize=4096 pv.01
logvol / --fstype=ext4 --name=lv_root --vgname=vg01 --size=1 --grow --fsoptions="noatime,nodiratime,discard"
network --bootproto=dhcp --hostname=${HOSTNAME} --onboot=yes
reboot

%packages
%end

%post
# Bootstrap SSH key
mkdir -m 0700 -p /root/.ssh
cat << EEOOFF > /root/.ssh/authorized_keys
${SSH_KEYS}
EEOOFF
restorecon -R /root/.ssh
%end
EOF
}

function build_initrd() {
    find . | cpio -H newc --create --verbose | gzip -9 > /boot/initrd_ripe.img;
}

function update_grub() {
    cat > /etc/grub.d/40_custom <<EOF
#!/bin/sh
exec tail -n +3 \$0
menuentry "Install RIPE Atlas Anchor" {
	linux /boot/vmlinuz_ripe ks=file://ks.cfg text console=tty0 console=ttyS0,115200n8 serial inst.repo=${MIRROR}7/os/x86_64/ 
	initrd /boot/initrd_ripe.img
}
EOF
    chmod +x /etc/grub.d/40_custom
    grub2-mkconfig --output=/boot/grub2/grub.cfg
    grub2-reboot "Install RIPE Atlas Anchor"
}

# create temporary directory
TMP_DIR=$(mktemp -d)
pushd "${TMP_DIR}"

decompress_initrd
build_kickstart
build_initrd
update_grub
reboot

wget -O- https://gist.githubusercontent.com/ym/6af571f704aff35c9ce7ea5597b5f7c1/raw/bf09b21a55cc29e780b55adac85038aca6ea085a/install_ripe.sh | bash