sonic-buildimage/files/image_config/platform/rc.local

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#!/bin/sh -x
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.
SONIC_VERSION=$(sonic-cfggen -y /etc/sonic/sonic_version.yml -v build_version)
FIRST_BOOT_FILE="/host/image-${SONIC_VERSION}/platform/firsttime"
# In case the unit is migrating from another NOS, save the logs
log_migration() {
echo $1 >> /host/migration/migration.log
}
# Import files from another NOS's partition onto SONiC
nos_migration_import() {
[ -f $1 ] && cp $1 $2 || log_migration "ERROR: $1 not found!"
}
# While migrating form another NOS, we need to preserve the MAC addresses
# of eth0 (and eventually switchports).
# Update the eth0 mac and also the EEPROM using ethtool so that subsequent
# reboots use the NOS's mac.
# Input : mgmt_interface.cfg file imported from the previous NOS.
update_mgmt_interface_macaddr() {
mgmt_config=$1
if [ ! -f "$mgmt_config" ]; then
log_migration "ERROR : unable update eth0 MAC : $mgmt_config not found!"
return
fi
# Save the previous NOS's mac
old_mac=`ip link show eth0 | grep ether | awk '{print $2}'`
[ -z "$old_mac" ] && log_migration "Unable to retrieve old mac address !" && return
# Extract, validate and set the eth0's mac address for the current session
new_mac=$(grep "macaddr" $mgmt_config | awk -F'=' '{print $2}')
log_migration "Setting eth0 mac as $new_mac."
if [ `echo $new_mac | egrep "^([0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}$"` ]; then
ip link set eth0 down
ip link set eth0 address $new_mac
ip link set eth0 up
else
log_migration "ERROR: mac imported from NOS is invalid : $new_mac !"
return
fi
# Get the ethtool magic and offset for changing the mac address in the EEPROM
ethtool_magic=$(grep "ethtool_magic" $mgmt_config | awk -F'=' '{print $2}')
ethtool_offset=$(grep "ethtool_offset" $mgmt_config | awk -F'=' '{print $2}')
if [ -z "$ethtool_magic" ] || [ -z "$ethtool_offset" ]; then
log_migration "Unable to retrieve ethtool params ($ethtool_magic,$ethtool_offset)"
return
fi
log_migration "eth0 mac in EEPROM before update:"
ethtool -e eth0 offset $ethtool_offset length 6 >> /host/migration/migration.log
# Update the mac address in the EEPROM for subsequent reboots
# Write only changed octets
for i in 1 2 3 4 5 6; do
offset=$(($ethtool_offset+$i-1))
old_mac_octet="$(echo $old_mac | cut -d":" -f$i)"
new_mac_octet="$(echo $new_mac | cut -d":" -f$i)"
if [ "$old_mac_octet" != "$new_mac_octet" ]; then
ethtool -E eth0 magic $ethtool_magic offset $offset value 0x$new_mac_octet
if [ $? != 0 ]; then
log_migration "ERROR: unable to update eth0 EEPROM!"
log_migration "index $i, magic $ethtool_magic offset $offset, value $new_mac_octet"
return
fi
fi
done
log_migration "eth0 mac in EEPROM after update:"
ethtool -e eth0 offset $ethtool_offset length 6 >> /host/migration/migration.log
# Update the 70-persistent-net.rules with the new mac for eth0
log_migration "/etc/udev/rules.d/70-persistent-net.rules : replacing $old_mac with $new_mac for eth0"
sed -i "/eth0/ s/ATTR{address}==\"$old_mac\"/ATTR{address}==\"$new_mac\"/g" /etc/udev/rules.d/70-persistent-net.rules
}
firsttime_exit() {
rm -rf $FIRST_BOOT_FILE
exit 0
}
# Given a string of tuples of the form field=value, extract the value for a field
# In : $string, $field
# Out: $value
value_extract() {
set -- $string
for x in "$@"; do
case "$x" in
$field=*)
value="${x#$field=}"
esac
done
}
program_console_speed()
{
speed=$(cat /proc/cmdline | grep -Eo 'console=ttyS[0-9]+,[0-9]+' | cut -d "," -f2)
if [ -z "$speed" ]; then
CONSOLE_SPEED=9600
else
CONSOLE_SPEED=$speed
fi
sed -i "s|\-\-keep\-baud .* %I| $CONSOLE_SPEED %I|g" /lib/systemd/system/serial-getty@.service
systemctl daemon-reload
}
#### Begin Main Body ####
logger "SONiC version ${SONIC_VERSION} starting up..."
# If the machine.conf is absent, it indicates that the unit booted
# into SONiC from another NOS. Extract the machine.conf from ONIE.
if [ ! -e /host/machine.conf ]; then
mkdir -p /host/migration
onie_dev=$(blkid | grep ONIE-BOOT | head -n 1 | awk '{print $1}' | sed -e 's/:.*$//')
mkdir -p /mnt/onie-boot
mount $onie_dev /mnt/onie-boot
onie_grub_cfg=/mnt/onie-boot/onie/grub/grub-machine.cfg
if [ ! -e $onie_grub_cfg ]; then
log_migration "$onie_grub_cfg not found"
else
. ./$onie_grub_cfg
grep = $onie_grub_cfg | sed -e 's/onie_//' -e 's/=.*$//' | while read var ; do
eval val='$'onie_$var
echo "onie_${var}=${val}" >> /host/machine.conf
done
fi
# Extract the previous NOS's partition that contains the migration artifacts
set -- $(cat /proc/cmdline)
for x in "$@"; do
case "$x" in
nos-config-part=*)
nos_val="${x#nos-config-part=}"
;;
esac
done
if [ -n "$nos_val" ]; then
nos_dev=$(findfs $nos_val)
if [ $? != 0 ]; then
log_migration "ERROR: nos_dev not found. Check grub parameters"
fi
else
log_migration "ERROR: nos_val not found. Check grub parameters"
fi
if [ -n "$nos_dev" ]; then
# Mount the previous NOS's partition
NOS_DIR=/mnt/nos_migration
MG_GZFILE=$NOS_DIR/minigraph.xml.gz.base64.txt
MG_FILE=$NOS_DIR/minigraph.xml
ACL_GZFILE=$NOS_DIR/acl.json.gz.base64.txt
ACL_FILE=$NOS_DIR/acl.json
SNMP_FILE=$NOS_DIR/snmp.yml
mkdir -p $NOS_DIR
mount $nos_dev $NOS_DIR
mkdir -p /host/fast-reboot
# decode & unzip minigraph.xml.gz.base64.txt
[ -f $MG_GZFILE ] && /usr/bin/base64 -d $MG_GZFILE | /bin/gunzip > $MG_FILE
[ -f $ACL_GZFILE ] && /usr/bin/base64 -d $ACL_GZFILE | /bin/gunzip > $ACL_FILE
# Copy relevant files
nos_migration_import $NOS_DIR/mgmt_interface.cfg /host/migration
nos_migration_import $MG_FILE /host/migration
nos_migration_import $ACL_FILE /host/migration
nos_migration_import $SNMP_FILE /host/migration
nos_migration_import $NOS_DIR/arp.json /host/fast-reboot
nos_migration_import $NOS_DIR/fdb.json /host/fast-reboot
nos_migration_import $NOS_DIR/default_routes.json /host/fast-reboot
umount $NOS_DIR
rmdir $NOS_DIR
fi
update_mgmt_interface_macaddr /host/migration/mgmt_interface.cfg
migration="TRUE"
umount /mnt/onie-boot
fi
. /host/machine.conf
program_console_speed
if [ -f $FIRST_BOOT_FILE ]; then
echo "First boot detected. Performing first boot tasks..."
if [ -n "$aboot_platform" ]; then
platform=$aboot_platform
elif [ -n "$onie_platform" ]; then
platform=$onie_platform
else
echo "Unknown SONiC platform"
firsttime_exit
fi
# Try to take old configuration saved during installation
# and create a flag in /tmp/ to let updategraph service know
if [ -d /host/old_config ]; then
mv -f /host/old_config /etc/sonic/
rm -rf /etc/sonic/old_config/old_config
touch /tmp/pending_config_migration
elif [ -f /host/minigraph.xml ]; then
mkdir -p /etc/sonic/old_config
mv /host/minigraph.xml /etc/sonic/old_config/
[ -f /host/acl.json ] && mv /host/acl.json /etc/sonic/old_config/
[ -f /host/snmp.yml ] && mv /host/snmp.yml /etc/sonic/old_config/
touch /tmp/pending_config_migration
elif [ -n "$migration" ] && [ -f /host/migration/minigraph.xml ]; then
mkdir -p /etc/sonic/old_config
mv /host/migration/minigraph.xml /etc/sonic/old_config/
[ -f /host/migration/acl.json ] && mv /host/migration/acl.json /etc/sonic/old_config/
[ -f /host/migration/snmp.yml ] && mv /host/migration/snmp.yml /etc/sonic/old_config/
touch /tmp/pending_config_migration
[ -f /etc/sonic/updategraph.conf ] && sed -i -e "s/enabled=false/enabled=true/g" /etc/sonic/updategraph.conf
else
touch /tmp/pending_config_initialization
fi
# Notify firstboot to Platform, to use it for reboot-cause
touch /tmp/notify_firstboot_to_platform
if [ -d /host/image-$SONIC_VERSION/platform/$platform ]; then
dpkg -i /host/image-$SONIC_VERSION/platform/$platform/*.deb
fi
sync
# If the unit booted into SONiC from another NOS's grub,
# we now install a grub for SONiC.
if [ -n "$onie_platform" ] && [ -n "$migration" ]; then
grub_bin=$(ls /host/image-$SONIC_VERSION/platform/x86_64-grub/grub-pc-bin*.deb 2> /dev/null)
if [ -z "$grub_bin" ]; then
log_migration "Unable to locate grub package !"
firsttime_exit
fi
dpkg -i $grub_bin > /dev/null 2>&1
if [ $? != 0 ]; then
log_migration "Unable to install grub package !"
firsttime_exit
fi
# Determine the block device to install grub
sonic_dev=$(blkid | grep SONiC-OS | head -n 1 | awk '{print $1}' | sed -e 's/[0-9]:.*$//')
if [ -z "$sonic_dev" ]; then
log_migration "Unable to determine sonic partition !"
firsttime_exit
fi
grub-install --boot-directory=/host --recheck $sonic_dev 2>/dev/null
if [ $? != 0 ]; then
log_migration "grub install failed !"
firsttime_exit
fi
# The SONiC "raw" build mode has already generated a proto grub.cfg
# as part of the migration. Platform specific constants need to be
# retrieved from installer.conf (if present) and assigned.
. /usr/share/sonic/device/$platform/installer.conf
if [ ! -z "$CONSOLE_PORT" ]; then
field="\-\-port"
string=$(grep $field /host/grub.cfg)
value_extract $string $field
console_port=$value
if [ ! -z "$console_port" ] && [ "$console_port" != "$CONSOLE_PORT" ]; then
sed -i -e "s/\-\-port=$console_port/\-\-port=$CONSOLE_PORT/g" /host/grub.cfg
fi
log_migration "grub.cfg console port=$console_port & installer.conf CONSOLE_PORT=$CONSOLE_PORT"
fi
if [ ! -z "$CONSOLE_DEV" ]; then
field="console"
string=$(grep $field /host/grub.cfg)
value_extract $string $field
console_dev_name=$(echo $value | sed -e "s/^.*=//" -e "s/,.*//")
console_dev="${console_dev_name#ttyS}"
if [ "$console_dev" != "$CONSOLE_DEV" ]; then
sed -i -e "s/console=ttyS$console_dev/console=ttyS$CONSOLE_DEV/g" /host/grub.cfg
fi
log_migration "grub.cfg console dev=$console_dev & installer.conf CONSOLE_DEV=$CONSOLE_DEV"
fi
if [ ! -z "$VAR_LOG_SIZE" ]; then
field="var_log_size"
string=$(grep $field /host/grub.cfg)
value_extract $string $field
var_log_size=$value
if [ ! -z "$var_log_size" ] && [ "$var_log_size" != "$VAR_LOG_SIZE" ]; then
sed -i -e "s/var_log_size=$var_log_size/var_log_size=$VAR_LOG_SIZE/g" /host/grub.cfg
fi
log_migration "grub.cfg var_log_size=$var_log_size & installer.conf VAR_LOG_SIZE=$VAR_LOG_SIZE"
fi
# Set the root based on the label
sonic_root=$(blkid | grep SONiC-OS | head -n 1 | awk '{print $1}' | sed -e 's/:.*$//')
sonic_root=$(echo "$sonic_root" | sed 's/\//\\\//g')
sed -i -e "s/%%SONIC_ROOT%%/$sonic_root/g" /host/grub.cfg
# Add the Diag and ONIE entries
mount $onie_dev /mnt/onie-boot
. /mnt/onie-boot/onie/grub.d/50_onie_grub >> /host/grub.cfg
umount /mnt/onie-boot
# Initialize the SONiC's grub config
mv /host/grub.cfg /host/grub/grub.cfg
fi
firsttime_exit
fi
exit 0