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sonic-buildimage/build_debian.sh
Taoyu Li ea372cc7c1 Add get_graph service to fetch minigraph automatically (#288) 
- Add a functionality to get SNMP community from DHCP (option 224)
- Add a functionality to get minigraph from http service instead of using default minigraph
  - The url for graph service is passed through DHCP option 225
  - This feature is by default disabled. Modify rule/config to enable it on build time, or modify /etc/sonic/graph_service_url on run time.
- Fix a bug that getting hostname from DHCP is not working correctly
2017-02-17 13:47:01 -08:00

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#!/bin/bash
## This script is to automate the preparation for a debian file system, which will be used for
## an ONIE installer image.
##
## USAGE:
## ./build_debian USERNAME PASSWORD_ENCRYPTED
## PARAMETERS:
## USERNAME
## The name of the default admin user
## PASSWORD_ENCRYPTED
## The encrypted password, expected by chpasswd command
## Default user
USERNAME=$1
[ -n "$USERNAME" ] || {
echo "Error: no or empty USERNAME argument"
exit 1
}
## Password for the default user, customizable by environment variable
## By default it is an empty password
## You may get a crypted password by: perl -e 'print crypt("YourPaSsWoRd", "salt"),"\n"'
PASSWORD_ENCRYPTED=$2
[ -n "$PASSWORD_ENCRYPTED" ] || {
echo "Error: no or empty PASSWORD_ENCRYPTED argument"
exit 1
}
## Include common functions
. functions.sh
## Enable debug output for script
set -x -e
## docker engine version (with platform)
DOCKER_VERSION=1.11.1-0~jessie_amd64
## Working directory to prepare the file system
FILESYSTEM_ROOT=./fsroot
## Hostname for the linux image
HOSTNAME=sonic
DEFAULT_USERINFO="Default admin user,,,"
## Read ONIE image related config file
. ./onie-image.conf
[ -n "$ONIE_IMAGE_PART_SIZE" ] || {
echo "Error: Invalid ONIE_IMAGE_PART_SIZE in onie image config file"
exit 1
}
[ -n "$ONIE_INSTALLER_PAYLOAD" ] || {
echo "Error: Invalid ONIE_INSTALLER_PAYLOAD in onie image config file"
exit 1
}
[ -n "$FILESYSTEM_SQUASHFS" ] || {
echo "Error: Invalid FILESYSTEM_SQUASHFS in onie image config file"
exit 1
}
## Prepare the file system directory
if [[ -d $FILESYSTEM_ROOT ]]; then
sudo rm -rf $FILESYSTEM_ROOT || die "Failed to clean chroot directory"
fi
mkdir -p $FILESYSTEM_ROOT
## Build a basic Debian system by debootstrap
echo '[INFO] Debootstrap...'
sudo debootstrap --variant=minbase --arch amd64 jessie $FILESYSTEM_ROOT http://ftp.us.debian.org/debian
## Config hostname and hosts, otherwise 'sudo ...' will complain 'sudo: unable to resolve host ...'
sudo LANG=C chroot $FILESYSTEM_ROOT /bin/bash -c "echo '$HOSTNAME' > /etc/hostname"
sudo LANG=C chroot $FILESYSTEM_ROOT /bin/bash -c "echo '127.0.0.1 $HOSTNAME' >> /etc/hosts"
sudo LANG=C chroot $FILESYSTEM_ROOT /bin/bash -c "echo '127.0.0.1 localhost' >> /etc/hosts"
## Config basic fstab
sudo LANG=C chroot $FILESYSTEM_ROOT /bin/bash -c 'echo "proc /proc proc defaults 0 0" >> /etc/fstab'
sudo LANG=C chroot $FILESYSTEM_ROOT /bin/bash -c 'echo "sysfs /sys sysfs defaults 0 0" >> /etc/fstab'
## Note: mounting is necessary to makedev and install linux image
echo '[INFO] Mount all'
## Output all the mounted device for troubleshooting
mount
trap_push 'sudo umount $FILESYSTEM_ROOT/proc || true'
sudo LANG=C chroot $FILESYSTEM_ROOT mount proc /proc -t proc
## Pointing apt to public apt mirrors and getting latest packages, needed for latest security updates
sudo cp files/apt/sources.list $FILESYSTEM_ROOT/etc/apt/
sudo cp files/apt/apt.conf.d/{81norecommends,apt-{clean,gzip-indexes,no-languages}} $FILESYSTEM_ROOT/etc/apt/apt.conf.d/
sudo LANG=C chroot $FILESYSTEM_ROOT bash -c 'apt-mark auto `apt-mark showmanual`'
## Note: set lang to prevent locale warnings in your chroot
sudo LANG=C chroot $FILESYSTEM_ROOT apt-get -y update
sudo LANG=C chroot $FILESYSTEM_ROOT apt-get -y upgrade
echo '[INFO] Install packages for building image'
sudo LANG=C chroot $FILESYSTEM_ROOT apt-get -y install makedev psmisc
## Create device files
echo '[INFO] MAKEDEV'
sudo LANG=C chroot $FILESYSTEM_ROOT /bin/bash -c 'cd /dev && MAKEDEV generic'
## Install initramfs-tools and linux kernel
## Note: initramfs-tools recommends depending on busybox, and we really want busybox for
## 1. commands such as touch
## 2. mount supports squashfs
## However, 'dpkg -i' plus 'apt-get install -f' will ignore the recommended dependency. So
## we install busybox explicitly
sudo LANG=C chroot $FILESYSTEM_ROOT apt-get -y install busybox
echo '[INFO] Install SONiC linux kernel image'
## Note: duplicate apt-get command to ensure every line return zero
sudo dpkg --root=$FILESYSTEM_ROOT -i target/debs/initramfs-tools_*.deb || \
sudo LANG=C DEBIAN_FRONTEND=noninteractive chroot $FILESYSTEM_ROOT apt-get -y install -f
sudo dpkg --root=$FILESYSTEM_ROOT -i target/debs/linux-image-3.16.0-4-amd64_*.deb || \
sudo LANG=C DEBIAN_FRONTEND=noninteractive chroot $FILESYSTEM_ROOT apt-get -y install -f
## Update initramfs for booting with squashfs+aufs
cat files/initramfs-tools/modules | sudo tee -a $FILESYSTEM_ROOT/etc/initramfs-tools/modules > /dev/null
## Hook into initramfs: change fs type from vfat to ext4 on arista switches
sudo mkdir -p $FILESYSTEM_ROOT/etc/initramfs-tools/scripts/init-premount/
sudo cp files/initramfs-tools/arista-convertfs $FILESYSTEM_ROOT/etc/initramfs-tools/scripts/init-premount/arista-convertfs
sudo chmod +x $FILESYSTEM_ROOT/etc/initramfs-tools/scripts/init-premount/arista-convertfs
sudo cp files/initramfs-tools/mke2fs $FILESYSTEM_ROOT/etc/initramfs-tools/hooks/mke2fs
sudo chmod +x $FILESYSTEM_ROOT/etc/initramfs-tools/hooks/mke2fs
## Hook into initramfs: after partition mount and loop file mount
## 1. Prepare layered file system
## 2. Bind-mount docker working directory (docker aufs cannot work over aufs rootfs)
sudo cp files/initramfs-tools/union-mount $FILESYSTEM_ROOT/etc/initramfs-tools/scripts/init-bottom/union-mount
sudo chmod +x $FILESYSTEM_ROOT/etc/initramfs-tools/scripts/init-bottom/union-mount
sudo cp files/initramfs-tools/union-fsck $FILESYSTEM_ROOT/etc/initramfs-tools/hooks/union-fsck
sudo chmod +x $FILESYSTEM_ROOT/etc/initramfs-tools/hooks/union-fsck
sudo chroot $FILESYSTEM_ROOT update-initramfs -u
## Install latest intel igb driver
sudo cp target/debs/igb.ko $FILESYSTEM_ROOT/lib/modules/3.16.0-4-amd64/kernel/drivers/net/ethernet/intel/igb/igb.ko
## Install docker
echo '[INFO] Install docker'
## Install apparmor utils since they're missing and apparmor is enabled in the kernel
## Otherwise Docker will fail to start
sudo LANG=C chroot $FILESYSTEM_ROOT apt-get -y install apparmor
docker_deb_url=https://apt.dockerproject.org/repo/pool/main/d/docker-engine/docker-engine_${DOCKER_VERSION}.deb
docker_deb_temp=`mktemp`
trap_push "rm -f $docker_deb_temp"
wget $docker_deb_url -qO $docker_deb_temp && { \
sudo dpkg --root=$FILESYSTEM_ROOT -i $docker_deb_temp || \
sudo LANG=C DEBIAN_FRONTEND=noninteractive chroot $FILESYSTEM_ROOT apt-get -y install -f; \
}
## Add docker config drop-in to select aufs, otherwise it may select other storage driver
sudo mkdir -p $FILESYSTEM_ROOT/etc/systemd/system/docker.service.d/
## Note: $_ means last argument of last command
sudo cp files/docker/docker.service.conf $_
## Create default user
## Note: user should be in the group with the same name, and also in sudo/docker group
sudo LANG=C chroot $FILESYSTEM_ROOT useradd -G sudo,docker $USERNAME -c "$DEFAULT_USERINFO" -m -s /bin/bash
## Create password for the default user
echo $USERNAME:$PASSWORD_ENCRYPTED | sudo LANG=C chroot $FILESYSTEM_ROOT chpasswd -e
## Pre-install hardware drivers
sudo LANG=C chroot $FILESYSTEM_ROOT apt-get -y install \
firmware-linux-nonfree
## Pre-install the fundamental packages
## Note: gdisk is needed for sgdisk in install.sh
## Note: parted is needed for partprobe in install.sh
## Note: ca-certificates is needed for easy_install
sudo LANG=C DEBIAN_FRONTEND=noninteractive chroot $FILESYSTEM_ROOT apt-get -y install \
file \
ifupdown \
iproute2 \
isc-dhcp-client \
sudo \
vim \
tcpdump \
ntp \
ntpstat \
openssh-server \
python \
python-setuptools \
rsyslog \
python-apt \
traceroute \
iputils-ping \
net-tools \
bsdmainutils \
ca-certificates \
i2c-tools \
efibootmgr \
usbutils \
pciutils \
iptables-persistent \
logrotate \
curl
## Remove sshd host keys, and will regenerate on first sshd start
sudo rm -f $FILESYSTEM_ROOT/etc/ssh/ssh_host_*_key*
sudo cp files/sshd/host-ssh-keygen.sh $FILESYSTEM_ROOT/usr/local/bin/
sudo cp -f files/sshd/sshd.service $FILESYSTEM_ROOT/lib/systemd/system/ssh.service
## Config sshd
sudo augtool --autosave "set /files/etc/ssh/sshd_config/UseDNS no" -r $FILESYSTEM_ROOT
## Config sysctl
sudo mkdir -p $FILESYSTEM_ROOT/var/core
sudo augtool --autosave "
set /files/etc/sysctl.conf/kernel.core_pattern '|/usr/bin/coredump-compress %e %p'
set /files/etc/sysctl.conf/net.ipv4.conf.default.forwarding 1
set /files/etc/sysctl.conf/net.ipv4.conf.all.forwarding 1
set /files/etc/sysctl.conf/net.ipv4.conf.eth0.forwarding 0
set /files/etc/sysctl.conf/net.ipv4.conf.default.arp_accept 0
set /files/etc/sysctl.conf/net.ipv4.conf.default.arp_announce 0
set /files/etc/sysctl.conf/net.ipv4.conf.default.arp_filter 0
set /files/etc/sysctl.conf/net.ipv4.conf.default.arp_notify 0
set /files/etc/sysctl.conf/net.ipv4.conf.default.arp_ignore 0
set /files/etc/sysctl.conf/net.ipv4.conf.all.arp_accept 0
set /files/etc/sysctl.conf/net.ipv4.conf.all.arp_announce 1
set /files/etc/sysctl.conf/net.ipv4.conf.all.arp_filter 0
set /files/etc/sysctl.conf/net.ipv4.conf.all.arp_notify 1
set /files/etc/sysctl.conf/net.ipv4.conf.all.arp_ignore 2
set /files/etc/sysctl.conf/net.ipv6.conf.default.forwarding 1
set /files/etc/sysctl.conf/net.ipv6.conf.all.forwarding 1
set /files/etc/sysctl.conf/net.ipv6.conf.eth0.forwarding 0
set /files/etc/sysctl.conf/net.ipv6.conf.default.accept_dad 0
set /files/etc/sysctl.conf/net.ipv6.conf.all.accept_dad 0
" -r $FILESYSTEM_ROOT
## docker-py is needed by Ansible docker module
sudo LANG=C chroot $FILESYSTEM_ROOT easy_install pip
sudo LANG=C chroot $FILESYSTEM_ROOT pip install 'docker-py==1.6.0'
## Remove pip which is unnecessary in the base image
sudo LANG=C chroot $FILESYSTEM_ROOT pip uninstall -y pip
## Config DHCP for eth0
sudo tee -a $FILESYSTEM_ROOT/etc/network/interfaces > /dev/null <<EOF
auto eth0
allow-hotplug eth0
iface eth0 inet dhcp
EOF
sudo cp files/dhcp/rfc3442-classless-routes $FILESYSTEM_ROOT/etc/dhcp/dhclient-exit-hooks.d
sudo cp files/dhcp/sethostname $FILESYSTEM_ROOT/etc/dhcp/dhclient-exit-hooks.d/
sudo cp files/dhcp/graphserviceurl $FILESYSTEM_ROOT/etc/dhcp/dhclient-exit-hooks.d/
sudo cp files/dhcp/snmpcommunity $FILESYSTEM_ROOT/etc/dhcp/dhclient-exit-hooks.d/
sudo cp files/dhcp/dhclient.conf $FILESYSTEM_ROOT/etc/dhcp/
if [ -f sonic_debian_extension.sh ]; then
./sonic_debian_extension.sh $FILESYSTEM_ROOT
fi
## Clean up apt
sudo LANG=C chroot $FILESYSTEM_ROOT apt-get autoremove
sudo LANG=C chroot $FILESYSTEM_ROOT apt-get autoclean
sudo LANG=C chroot $FILESYSTEM_ROOT apt-get clean
sudo LANG=C chroot $FILESYSTEM_ROOT bash -c 'rm -rf /usr/share/doc/* /usr/share/locale/* /var/lib/apt/lists/* /tmp/*'
## Umount all
echo '[INFO] Umount all'
sudo LANG=C chroot $FILESYSTEM_ROOT fuser -km /proc || true
sudo LANG=C chroot $FILESYSTEM_ROOT umount /proc
## Prepare empty directory to trigger mount move in initramfs-tools/mount_loop_root, implemented by patching
sudo mkdir $FILESYSTEM_ROOT/host
## Compress most file system into squashfs file
sudo rm -f $ONIE_INSTALLER_PAYLOAD $FILESYSTEM_SQUASHFS
## Output the file system total size for diag purpose
sudo du -hs $FILESYSTEM_ROOT
sudo mksquashfs $FILESYSTEM_ROOT $FILESYSTEM_SQUASHFS -e boot -e var/lib/docker
## Compress docker files
pushd $FILESYSTEM_ROOT && sudo tar czf $OLDPWD/$FILESYSTEM_DOCKERFS -C var/lib/docker .; popd
## Compress together with /boot and /var/lib/docker as an installer payload zip file
pushd $FILESYSTEM_ROOT && sudo zip $OLDPWD/$ONIE_INSTALLER_PAYLOAD -r boot/; popd
sudo zip -g $ONIE_INSTALLER_PAYLOAD $FILESYSTEM_SQUASHFS $FILESYSTEM_DOCKERFS
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