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05bba4cbbd
Original fix proposed by Stanislav German-Evtushenko (giner) CPC Ubuntu cloud images default to enabling a serial console connection via the kernel commandline option `console=ttyS0`. Many clouds support the serial connection, and utilize it for debugging purposes. Virtualbox supports the serial connection as well. In Bionic and earlier images, Vagrant boxes created a serial log file in the directory of the Vagrantfile by default. However this is not standard behaviour for Vagrant images, and so it was removed in Eoan onwards. Starting in Eoan, there were reports of image booting slowdown (1874453 is a single example). After testing, it was determined that the serial connection starting, without a device attached, was the cause of the slow down. However, we did not want to revert to the old functionality of creating a file. Much thanks to <giner> for providing the Ruby syntax for sending to File::NULL. This option will not create a local file, however, the default Vagrantfile configuration is overwritable via a users Vagrantfile. The original syntax for creating a file local to the users Vagrantfile has been included as an example.
246 lines
8.2 KiB
Bash
Executable File
246 lines
8.2 KiB
Bash
Executable File
#!/bin/bash -ex
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# vi: ts=4 noexpandtab
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#
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# Generate a generic Vagrant Box.
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#
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# Vagrant images are essentially nothing more than OVA's with extra-metadata
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# and some preinstalled packages.
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#
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# We can't use the OVA's for Vagrant since Vagrant uses SSH to modify the
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# instance. This build step creates a cloud-config ISO so that Cloud-Init
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# will configure the initial user, creates meta-data that tells Vagrant how
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# to interact with the cloud-init created users, and finally create the OVA.
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#
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# For this step, we make a deriviative of binary/boot/disk.ext4 and install
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# some packages in it, convert it to a vmdk, and then assemble the vagrant
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# box.
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case ${SUBPROJECT:-} in
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minimized)
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echo "Skipping minimized $0 build as images won't boot with linux-kvm"
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exit 0
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;;
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*)
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;;
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esac
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cur_d=${PWD}
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my_d=$(dirname $(readlink -f ${0}))
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# Switch on $ARCH to determine which ID and description to use in the produced
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# OVF. We have fancy Ubuntu-specific IDs in the OVF specification, we might as
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# well use them.
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case $ARCH in
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amd64)
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ovf_id=94
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ovf_os_type="ubuntu64Guest"
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ovf_desc_bits=64 ;;
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*)
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echo "Vagrant images are not supported for $ARCH yet."
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exit 0;;
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esac
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. config/functions
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# Lets be safe about this
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box_d=$(mktemp -d)
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seed_d=$(mktemp -d)
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mount_d=$(mktemp -d)
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create_derivative "disk" "vagrant" #sets ${derivative_img}
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mount_disk_image ${derivative_img} ${mount_d}
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cleanup_vagrant() {
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if [ -d "$mount_d" ]; then
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umount_disk_image "$mount_d"
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fi
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rm -rf ${box_d} ${seed_d} ${mount_d} ${derivative_img}
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}
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trap cleanup_vagrant EXIT
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chroot ${mount_d} apt-get update
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# virtualbox-guest-utils Recommends: virtualbox-guest-x11, which we want to
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# avoid pulling into a cloud image.
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chroot ${mount_d} apt-get install --no-install-recommends -y virtualbox-guest-utils
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chroot ${mount_d} apt-get clean
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# Create and setup users inside the image.
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# Vagrant users expect a "vagrant" user with a "vagrant" username.
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# See https://www.vagrantup.com/docs/boxes/base.html
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# Note: We decided NOT to allow root login with a default password.
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chroot ${mount_d} adduser vagrant --disabled-password --gecos ""
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echo "vagrant:vagrant" | chroot ${mount_d} chpasswd
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# The vagrant user should have passwordless sudo.
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cat << EOF > ${mount_d}/etc/sudoers.d/vagrant
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vagrant ALL=(ALL) NOPASSWD:ALL
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EOF
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# Add the insecure vagrant pubkey to the vagrant user, as is expected by the
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# vagrant ecosystem (https://www.vagrantup.com/docs/boxes/base.html)
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chroot ${mount_d} chmod 0440 /etc/sudoers.d/vagrant
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chroot ${mount_d} mkdir -p /home/vagrant/.ssh
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cat << EOF > ${mount_d}/home/vagrant/.ssh/authorized_keys
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ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEA6NF8iallvQVp22WDkTkyrtvp9eWW6A8YVr+kz4TjGYe7gHzIw+niNltGEFHzD8+v1I2YJ6oXevct1YeS0o9HZyN1Q9qgCgzUFtdOKLv6IedplqoPkcmF0aYet2PkEDo3MlTBckFXPITAMzF8dJSIFo9D8HfdOV0IAdx4O7PtixWKn5y2hMNG0zQPyUecp4pzC6kivAIhyfHilFR61RGL+GPXQ2MWZWFYbAGjyiYJnAmCP3NOTd0jMZEnDkbUvxhMmBYSdETk1rRgm+R4LOzFUGaHqHDLKLX+FIPKcF96hrucXzcWyLbIbEgE98OHlnVYCzRdK8jlqm8tehUc9c9WhQ== vagrant insecure public key
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EOF
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chroot ${mount_d} chown -R vagrant:vagrant /home/vagrant/.ssh
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chroot ${mount_d} chmod 700 /home/vagrant/.ssh
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umount_disk_image "$mount_d"
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rmdir "$mount_d"
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# Used to identify bits
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suite=$(chroot chroot lsb_release -c -s)
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version=$(chroot chroot lsb_release --release --short)
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distro=$(chroot chroot lsb_release --id --short | tr [:upper:] [:lower:])
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# Get the VMDK in place
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prefix="${distro}-${suite}-${version}-cloudimg"
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vmdk_f="${box_d}/${prefix}.vmdk"
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create_vmdk ${derivative_img} ${vmdk_f} 40960
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####################################
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# Create the ConfigDrive
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# This is a cloud-init piece that instructs cloud-init to configure
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# a default user at first boot.
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cdrom_vmdk_f="${box_d}/${prefix}-configdrive.vmdk"
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# Create the user-data. This is totally insecure, but so is Vagrant. To
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# mitigate this insecurity, the vagrant instance is not accessible
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# except via local host.
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cat > ${seed_d}/user-data <<END
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#cloud-config
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manage_etc_hosts: localhost
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END
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# Create the fake meta-data
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cat > ${seed_d}/meta-data <<END
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instance-id: iid-$(openssl rand -hex 8)
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local-hostname: ubuntu-${suite}
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END
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# Pad the cdrom, otherwise the VMDK will be invalid
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dd if=/dev/zero of=${seed_d}/bloat_file bs=1M count=10
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# Create the ISO
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genisoimage \
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-output ${seed_d}/seed.iso \
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-volid cidata \
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-joliet -rock \
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-input-charset utf-8 \
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${seed_d}/user-data \
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${seed_d}/meta-data
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# Make a VMDK out of the seed file.
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create_vmdk ${seed_d}/seed.iso ${cdrom_vmdk_f} 10
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### END Create ConfigDrive
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##########################
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##########################
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# VAGRANT meta-data
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# Create the Vagrant file. This file is used by Vagrant to define how
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# Vagrant uses Virtualbox and how Vagrant interacts with the host.
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macaddr="02$(openssl rand -hex 5 | tr [:lower:] [:upper:])"
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cat > ${box_d}/Vagrantfile <<EOF
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# Front load the includes
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include_vagrantfile = File.expand_path("../include/_Vagrantfile", __FILE__)
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load include_vagrantfile if File.exist?(include_vagrantfile)
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Vagrant.configure("2") do |config|
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config.vm.base_mac = "${macaddr}"
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config.vm.provider "virtualbox" do |vb|
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vb.customize [ "modifyvm", :id, "--uart1", "0x3F8", "4" ]
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# Create a NULL serial port to skip console logging by default
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vb.customize [ "modifyvm", :id, "--uartmode1", "file", File::NULL ]
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# If console logging is desired, uncomment this line and remove prior
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# vb.customize [ "modifyvm", :id, "--uartmode1", "file", File.join(Dir.pwd, "${prefix}-console.log") ]
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# Ubuntu cloud images, by default, enable console=ttyS0. This enables serial consoles to
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# connect to the images. With the change related to LP #1777827, removing a serial
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# file logger, Vagrant image boot times increased and now run greater than 5 minutes
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# Creating a console log file is not an expected default behavior for vagrant boxes.
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# As a workaround, we create a console connection to File:NULL. LP #1874453
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# This is overrideable in user files to write to a local file
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end
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end
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EOF
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# Tag it as a Virtualbox Vagrant
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cat > ${box_d}/metadata.json <<EOF
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{
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"provider": "virtualbox"
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}
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EOF
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# END
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##########################
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##########################
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# Create the actual box
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# Get information about the disks for the OVF
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vmdk_size=$(du -b "${vmdk_f}" | cut -f1)
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vmdk_capacity=$(qemu-img info "${vmdk_f}" | awk '-F[\( ]' '$1 ~ /virtual/ && $NF ~ /bytes.*/ {print$(NF-1)}')
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vmdk_sha256=$(sha256sum ${vmdk_f} | cut -d' ' -f1)
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cdrom_size=$(du -b "${cdrom_vmdk_f}" | cut -f1)
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cdrom_capacity=$(qemu-img info "${cdrom_vmdk_f}" | awk '-F[\( ]' '$1 ~ /virtual/ && $NF ~ /bytes.*/ {print$(NF-1)}')
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cdrom_sha256=$(sha256sum ${cdrom_vmdk_f} | cut -d' ' -f1)
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# Populate the OVF template
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ovf="${box_d}/box.ovf"
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cp ${my_d}/ovf/ubuntu-ova-v1-cloudcfg-vmdk.tmpl ${ovf}
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serial_stamp=$(date +%Y%m%d)
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sed -i "${ovf}" \
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-e "s/@@NAME@@/${prefix}-${serial_stamp}/g" \
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-e "s/@@FILENAME1@@/${vmdk_f##*/}/g" \
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-e "s/@@VMDK_FILE_SIZE@@/${vmdk_size}/g" \
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-e "s/@@VMDK_CAPACITY@@/${vmdk_capacity}/g" \
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-e "s/@@FILENAME2@@/${cdrom_vmdk_f##*/}/g" \
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-e "s/@@VMDK_FILE_SIZE2@@/${cdrom_size}/g" \
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-e "s/@@VMDK_CAPACITY2@@/${cdrom_capacity}/g" \
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-e "s/@@NUM_CPUS@@/2/g" \
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-e "s/@@VERSION@@/${version}/g" \
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-e "s/@@DATE@@/${serial_stamp}/g" \
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-e "s/@@MEM_SIZE@@/1024/g" \
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-e "s/@@OVF_ID@@/${ovf_id}/g" \
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-e "s/@@OVF_OS_TYPE@@/${ovf_os_type}/g" \
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-e "s/@@OVF_DESC_BITS@@/${ovf_desc_bits}/g"
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ovf_sha256=$(sha256sum ${ovf} | cut -d' ' -f1)
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# Generate the manifest
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manifest="${box_d}/${prefix}.mf"
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cat > "${manifest}" <<EOF
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SHA256(${vmdk_f##*/})= ${vmdk_sha256}
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SHA256(${cdrom_vmdk_f##*/})= ${cdrom_sha256}
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SHA256(${ovf##*/})= ${ovf_sha256}
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EOF
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# Now create the box
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echo "Creating OVA with the following attributes:"
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cat <<EOM
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OVA information:
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Name: ${prefix}
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Size: ${vmdk_size}
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VMDK Name: ${vmdk_f##*/}
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VMDK Capacity: ${vmdk_capacity}
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VMDK SHA256: ${vmdk_sha256}
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CDROM Name: ${cdrom_vmdk_f##*/}
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CDROM Capacity: ${cdrom_capacity}
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CDROM SHA256: ${cdrom_sha256}
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EOM
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tar -C ${box_d} \
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--sort=name \
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-cf ${cur_d}/livecd.ubuntu-cpc.vagrant.box \
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box.ovf \
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Vagrantfile \
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metadata.json \
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${prefix}.mf \
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${vmdk_f##*/} \
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${cdrom_vmdk_f##*/}
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