131 lines
4.4 KiB
Bash
Executable File
131 lines
4.4 KiB
Bash
Executable File
#!/bin/bash
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# Rebuild upstream pre-built tinyipa it to be usable with ansible-deploy.
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#
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# Downloads the pre-built tinyipa ramdisk from tarballs.openstack.org or
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# rebuilds a ramdisk under path set as TINYIPA_RAMDISK_FILE shell var.
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# During rebuild this script installs and configures OpenSSH server if needed
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# and makes required changes for Ansible + Python to work in compiled/optimized
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# Python environment.
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#
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# By default, id_rsa or id_dsa keys of the user performing the build
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# are baked into the image as authorized_keys for 'tc' user.
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# To supply different public ssh key, befor running this script set
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# SSH_PUBLIC_KEY environment variable to point to absolute path to the key.
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#
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# This script produces "ansible-<tinyipa-ramdisk-name>" ramdisk that can serve
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# as ramdisk for both ansible-deploy driver and agent-based Ironic drivers,
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set -ex
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WORKDIR=$(readlink -f $0 | xargs dirname)
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REBUILDDIR="$WORKDIR/tinyipaaddssh"
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DST_DIR=$REBUILDDIR
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source ${WORKDIR}/common.sh
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TINYCORE_MIRROR_URL=${TINYCORE_MIRROR_URL:-}
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BRANCH_PATH=${BRANCH_PATH:-master}
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TINYIPA_RAMDISK_FILE=${TINYIPA_RAMDISK_FILE:-}
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SSH_PUBLIC_KEY=${SSH_PUBLIC_KEY:-}
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SSHD_CONFIG_PATH="/usr/local/etc/ssh/sshd_config"
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SSH_RSA_KEY_PATH="/usr/local/etc/ssh/ssh_host_rsa_key"
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SSH_DSA_KEY_PATH="/usr/local/etc/ssh/ssh_host_dsa_key"
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SSH_ED25519_KEY_PATH="/usr/local/etc/ssh/ssh_host_ed25519_key"
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function validate_params {
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echo "Validating location of public SSH key"
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if [ -n "$SSH_PUBLIC_KEY" ]; then
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if [ -r "$SSH_PUBLIC_KEY" ]; then
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_found_ssh_key="$SSH_PUBLIC_KEY"
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fi
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else
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for fmt in rsa dsa; do
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if [ -r "$HOME/.ssh/id_$fmt.pub" ]; then
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_found_ssh_key="$HOME/.ssh/id_$fmt.pub"
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break
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fi
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done
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fi
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if [ -z $_found_ssh_key ]; then
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echo "Failed to find neither provided nor default SSH key"
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exit 1
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fi
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}
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function get_tinyipa {
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if [ -z $TINYIPA_RAMDISK_FILE ]; then
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mkdir -p $WORKDIR/build_files/cache
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cd $WORKDIR/build_files/cache
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wget -N https://tarballs.openstack.org/ironic-python-agent/tinyipa/files/tinyipa${BRANCH_EXT}.gz
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TINYIPA_RAMDISK_FILE="$WORKDIR/build_files/cache/tinyipa${BRANCH_EXT}.gz"
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fi
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}
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function unpack_ramdisk {
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if [ -d "$REBUILDDIR" ]; then
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sudo rm -rf "$REBUILDDIR"
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fi
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mkdir -p "$REBUILDDIR"
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# Extract rootfs from .gz file
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( cd "$REBUILDDIR" && zcat "$TINYIPA_RAMDISK_FILE" | sudo cpio -i -H newc -d )
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}
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function install_ssh {
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if [ ! -f "${REBUILDDIR}${SSHD_CONFIG_PATH}" ]; then
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# tinyipa was built without SSH server installed
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# Install and configure bare minimum for SSH access
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$TC_CHROOT_CMD tce-load -wic openssh
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# Configure OpenSSH
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$CHROOT_CMD cp ${SSHD_CONFIG_PATH}.orig $SSHD_CONFIG_PATH
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echo "PasswordAuthentication no" | $CHROOT_CMD tee -a $SSHD_CONFIG_PATH
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# Generate and configure host keys - RSA, DSA, Ed25519
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# NOTE(pas-ha) ECDSA host key will still be re-generated fresh on every image boot
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$CHROOT_CMD ssh-keygen -q -t rsa -N "" -f $SSH_RSA_KEY_PATH
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$CHROOT_CMD ssh-keygen -q -t dsa -N "" -f $SSH_DSA_KEY_PATH
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$CHROOT_CMD ssh-keygen -q -t ed25519 -N "" -f $SSH_ED25519_KEY_PATH
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echo "HostKey ${SSH_RSA_KEY_PATH}" | $CHROOT_CMD tee -a $SSHD_CONFIG_PATH
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echo "HostKey ${SSH_DSA_KEY_PATH}" | $CHROOT_CMD tee -a $SSHD_CONFIG_PATH
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echo "HostKey ${SSH_ED25519_KEY_PATH}" | $CHROOT_CMD tee -a $SSHD_CONFIG_PATH
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fi
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# setup new user SSH keys anyway
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$CHROOT_CMD mkdir -p /home/tc
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$CHROOT_CMD chown -R tc.staff /home/tc
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$TC_CHROOT_CMD mkdir -p /home/tc/.ssh
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cat $_found_ssh_key | $TC_CHROOT_CMD tee /home/tc/.ssh/authorized_keys
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$CHROOT_CMD chown tc.staff /home/tc/.ssh/authorized_keys
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$TC_CHROOT_CMD chmod 600 /home/tc/.ssh/authorized_keys
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}
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function rebuild_ramdisk {
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# Rebuild build directory into gz file
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ansible_basename="ansible-$(basename $TINYIPA_RAMDISK_FILE)"
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( cd "$REBUILDDIR" && sudo find | sudo cpio -o -H newc | gzip -9 > "$WORKDIR/${ansible_basename}" )
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# Output file created by this script and its size
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cd "$WORKDIR"
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echo "Produced files:"
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du -h "${ansible_basename}"
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}
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sudo -v
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validate_params
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get_tinyipa
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unpack_ramdisk
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setup_tce "$DST_DIR"
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# NOTE (pas-ha) default tinyipa is built without SSH access, enable it here
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install_ssh
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cleanup_tce "$DST_DIR"
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rebuild_ramdisk
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