[config-setup]: create a SONiC configuration management service (#3227)
* Create a SONiC configuration management service * Perform config db migration after loading config_db.json to redis DB * Migrate config-setup post migration hooks on image upgrade config-setup post migration hooks help user to migrate configurations from old image to new image. If the installed hooks are user defined they will not be part of the newly installed image. So these hooks have to be migrated to new image and only then they can be executing when the new image is booting. The changes in this fix migrate config-setup post-migration hooks and ensure that any hooks with the same filename in newly installed image are not overwritten. It is expected that users install new hooks as per their requirement and not edit existing hooks. Any changes to existing hooks need to be done as part of new image and not post bootup.
This commit is contained in:
rajendra-dendukuri
Abhishek
parent
a29a2a4977
commit
bb34edf1af
18
files/build_templates/config-setup.service.j2
Normal file
18
files/build_templates/config-setup.service.j2
Normal file
@ -0,0 +1,18 @@
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[Unit]
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Description=Config initialization and migration service
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After=rc-local.service
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After=database.service
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Requires=database.service
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{% if sonic_asic_platform == 'mellanox' -%}
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Requires=hw-management.service
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{% endif -%}
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[Service]
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Type=oneshot
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ExecStart=/usr/bin/config-setup boot
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RemainAfterExit=yes
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[Install]
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WantedBy=multi-user.target
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@ -258,6 +258,11 @@ sudo bash -c "echo '{ \"DEVICE_METADATA\": { \"localhost\": { \"default_bgp_stat
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\"{{crm_res}}_threshold_type\": \"percentage\", \"{{crm_res}}_low_threshold\": \"70\", \"{{crm_res}}_high_threshold\": \"85\"{% if not loop.last %}, {% endif %}
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{%- endfor %} } } }' >> $FILESYSTEM_ROOT/etc/sonic/init_cfg.json"
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# Copy config-setup script and service file
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j2 files/build_templates/config-setup.service.j2 | sudo tee $FILESYSTEM_ROOT/etc/systemd/system/config-setup.service
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sudo cp $IMAGE_CONFIGS/config-setup/config-setup $FILESYSTEM_ROOT/usr/bin/config-setup
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sudo LANG=C chroot $FILESYSTEM_ROOT systemctl enable config-setup.service
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# Copy SNMP configuration files
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sudo cp $IMAGE_CONFIGS/snmp/snmp.yml $FILESYSTEM_ROOT/etc/sonic/
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@ -1,12 +1,7 @@
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[Unit]
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Description=Update minigraph and set configuration based on minigraph
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After=rc-local.service
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After=database.service
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Requires=database.service
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{% if sonic_asic_platform == 'mellanox' -%}
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Requires=hw-management.service
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{% endif -%}
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After=config-setup.service
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Requires=config-setup.service
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[Service]
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Type=oneshot
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399
files/image_config/config-setup/config-setup
Executable file
399
files/image_config/config-setup/config-setup
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@ -0,0 +1,399 @@
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#!/bin/bash
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###########################################################################
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# Copyright 2019 Broadcom. The term "Broadcom" refers to Broadcom Inc. #
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# and/or its subsidiaries. #
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# #
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# Licensed under the Apache License, Version 2.0 (the "License"); #
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# you may not use this file except in compliance with the License. #
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# You may obtain a copy of the License at #
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# #
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# http://www.apache.org/licenses/LICENSE-2.0 #
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# #
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# Unless required by applicable law or agreed to in writing, software #
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# distributed under the License is distributed on an "AS IS" BASIS, #
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.#
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# See the License for the specific language governing permissions and #
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# limitations under the License. #
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# #
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###########################################################################
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# SONiC Configuration Setup #
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# #
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# This script is used to initialize configuration used #
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# by SONiC SWSS. It also performs configuration #
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# migration. #
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# #
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###########################################################################
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# Initialize constants
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CONFIG_DB_INDEX=4
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UPDATEGRAPH_CONF=/etc/sonic/updategraph.conf
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CONFIG_DB_JSON=/etc/sonic/config_db.json
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MINGRAPH_FILE=/etc/sonic/minigraph.xml
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TMP_ZTP_CONFIG_DB_JSON=/tmp/ztp_config_db.json
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FACTORY_DEFAULT_HOOKS=/etc/config-setup/factory-default-hooks.d
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CONFIG_PRE_MIGRATION_HOOKS=/etc/config-setup/config-migration-pre-hooks.d
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CONFIG_POST_MIGRATION_HOOKS=/etc/config-setup/config-migration-post-hooks.d
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CONFIG_SETUP_VAR_DIR=/var/lib/config-setup
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CONFIG_SETUP_PRE_MIGRATION_FLAG=${CONFIG_SETUP_VAR_DIR}/pending_pre_migration
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CONFIG_SETUP_POST_MIGRATION_FLAG=${CONFIG_SETUP_VAR_DIR}/pending_post_migration
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CONFIG_SETUP_INITIALIZATION_FLAG=${CONFIG_SETUP_VAR_DIR}/pending_initialization
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# Command usage and help
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usage()
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{
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cat << EOF
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Usage: config-setup < backup | boot | factory >
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backup - Take a backup copy of SONiC configuration.
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boot - Initialize/migrate SONiC configuration during system boot.
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factory - Create factory default SONiC configuration and save it to
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to ${CONFIG_DB_JSON}.
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EOF
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}
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# run given script
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run_hook() {
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local script="$1"
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local exit_status=0
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if [ -f $script ]; then
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# Check hook for syntactical correctness before executing it
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/bin/bash -n $script
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exit_status=$?
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if [ "$exit_status" -eq 0 ]; then
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. $script
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fi
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exit_status=$?
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fi
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if [ -n "$exit_status" ] && [ "$exit_status" -ne 0 ]; then
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echo "$script returned non-zero exit status $exit_status"
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fi
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return $exit_status
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}
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# run scripts in given directory
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run_hookdir() {
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local dir="$1"
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local progress_file="$2"
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local exit_status=0
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if [ -d "$dir" ]; then
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if [ -n $progress_file ]; then
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[ ! -d $(dirname $progress_file) ] && mkdir -p $(dirname $progress_file)
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[ ! -e $progress_file ] && run-parts --list $dir > $progress_file
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SCRIPT_LIST=$(cat $progress_file)
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else
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SCRIPT_LIST=$(run-parts --list $dir)
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fi
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for script in $SCRIPT_LIST; do
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run_hook $script
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exit_status=$((exit_status|$?))
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script_name=$(basename $script)
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sed -i "/$script_name/d" $progress_file
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done
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[ -n $progress_file ] && [ "$(cat ${progress_file})" = "" ] && rm -f ${progress_file}
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fi
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return $exit_status
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}
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# Reload minigraph.xml file on disk
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reload_minigraph()
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{
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echo "Reloading minigraph..."
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if [ ! -f /etc/sonic/init_cfg.json ]; then
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echo "{}" > /etc/sonic/init_cfg.json
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fi
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redis-cli -n $CONFIG_DB_INDEX FLUSHDB
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sonic-cfggen -H -m -j /etc/sonic/init_cfg.json --write-to-db
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redis-cli -n $CONFIG_DB_INDEX SET "CONFIG_DB_INITIALIZED" "1"
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if [ -f /etc/sonic/acl.json ]; then
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acl-loader update full /etc/sonic/acl.json
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fi
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config qos reload
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pfcwd start_default
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if [[ -x /usr/bin/db_migrator.py ]]; then
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# Set latest version number
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/usr/bin/db_migrator.py -o set_version
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fi
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}
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# Restore SONiC configuration from a backup copy
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function copy_config_files_and_directories()
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{
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for file_dir in $@; do
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if [ -f /etc/sonic/old_config/${file_dir} ] || [ -d /etc/sonic/old_config/${file_dir} ]; then
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echo "Copying SONiC configuration ${file_dir} ..."
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cp -ar /etc/sonic/old_config/${file_dir} /etc/sonic/
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else
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echo "Missing SONiC configuration ${file_dir} ..."
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fi
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done
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}
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# Check if SONiC swich has booted after a warm reboot request
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check_system_warm_boot()
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{
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SYSTEM_WARM_START=`/usr/bin/redis-cli -n 6 hget "WARM_RESTART_ENABLE_TABLE|system" enable`
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# SYSTEM_WARM_START could be empty, always make WARM_BOOT meaningful.
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if [[ x"$SYSTEM_WARM_START" == x"true" ]]; then
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WARM_BOOT="true"
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else
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WARM_BOOT="false"
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fi
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}
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# Check if updategraph service is administratively enabled
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updategraph_is_enabled()
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{
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rv=1
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if [ -e ${UPDATEGRAPH_CONF} ]; then
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updategraph_mode=$(grep enabled ${UPDATEGRAPH_CONF} | head -n 1 | cut -f2 -d=)
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[ "${updategraph_mode}" = "true" ] && rv = 0
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fi
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return $rv
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}
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# Disable updategraph admininistratively
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disable_updategraph()
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{
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sed -i "/enabled=/d" ${UPDATEGRAPH_CONF}
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echo "enabled=false" >> ${UPDATEGRAPH_CONF}
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}
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# Check if Zero Touch Provisioning is available and is administratively enabled
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ztp_is_enabled()
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{
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rv=1
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if [ -e /usr/bin/ztp ]; then
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status=$(ztp status -c)
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[ "$status" != "0:DISABLED" ] && [ "$status" != "" ] && rv=0
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fi
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return $rv
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}
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# Load requested SONiC configuration into config DB and initialize it
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# Usage: load_config <config_file>
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#
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#
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load_config()
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{
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CONFIG_FILE=${1}
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if [ "${CONFIG_FILE}" = "" ]; then
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return 1
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fi
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redis-cli -n $CONFIG_DB_INDEX FLUSHDB
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sonic-cfggen -j ${CONFIG_FILE} --write-to-db
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if [ $? -ne 0 ]; then
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return $?
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fi
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if [[ -x /usr/bin/db_migrator.py ]]; then
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# Migrate the DB to the latest schema version if needed
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/usr/bin/db_migrator.py -o migrate
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fi
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redis-cli -n $CONFIG_DB_INDEX SET "CONFIG_DB_INITIALIZED" "1"
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return 0
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}
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# Generate requested SONiC configuration and save it as destination file
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# Usage: generate_config < factory | ztp > <destination_file>
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#
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# factory - Create factory default configuration
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# ztp - Create Zero Touch Provisioning Configuration
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# used for provisioning data discovery.
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#
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generate_config()
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{
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# Collect all information needed to generate configuration
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PLATFORM=`sonic-cfggen -H -v DEVICE_METADATA.localhost.platform`
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PRESET=(`head -n 1 /usr/share/sonic/device/$PLATFORM/default_sku`)
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HW_KEY=${PRESET[0]}
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DEFAULT_PRESET=${PRESET[1]}
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# Parse arguments passed
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CONFIG_TYPE=$1
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DEST_FILE=$2
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if [ "$1" = "ztp" ]; then
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/usr/lib/ztp/ztp-profile.sh create ${DEST_FILE}
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elif [ "$1" = "factory" ]; then
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rv=1
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# Execute config initialization hooks
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run_hookdir ${FACTORY_DEFAULT_HOOKS} ${CONFIG_SETUP_INITIALIZATION_FLAG}
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# Use preset defined in default_sku
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if [ ! -e ${DEST_FILE} ]; then
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sonic-cfggen -H -k ${HW_KEY} --preset ${DEFAULT_PRESET} > ${DEST_FILE}
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rv=$?
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if [ $rv -ne 0 ]; then
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return $rv
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fi
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fi
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fi
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return 0
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}
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# Create SONiC configuration for first time bootup
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# - If ZTP is enabled, ZTP configuraion is created
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# - If ZTP is disabled and updategraph is disabled, factory default configuration
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# is created
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# - If updategraph is enabled and ZTP is disabled, updategraph initializes
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# configuration
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do_config_intialization()
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{
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if ! updategraph_is_enabled ; then
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if ! ztp_is_enabled ; then
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echo "No configuration detected, generating factory default configuration..."
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generate_config factory ${CONFIG_DB_JSON}
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load_config ${CONFIG_DB_JSON}
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fi
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fi
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if ztp_is_enabled ; then
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echo "No configuration detected, initiating zero touch provisioning..."
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generate_config ztp ${TMP_ZTP_CONFIG_DB_JSON}
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load_config ${TMP_ZTP_CONFIG_DB_JSON}
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rm -f ${TMP_ZTP_CONFIG_DB_JSON}
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fi
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rm -f /tmp/pending_config_initialization
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}
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# Restore config-setup post migration hooks from a backup copy
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copy_post_migration_hooks()
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{
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BACKUP_DIR=/etc/sonic/old_config/config-migration-post-hooks.d
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if [ -d ${BACKUP_DIR} ]; then
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[ -d ${CONFIG_POST_MIGRATION_HOOKS} ] || mkdir -p ${CONFIG_POST_MIGRATION_HOOKS}
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for hook in $(ls -1 ${BACKUP_DIR}) ; do
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if [ ! -e ${CONFIG_POST_MIGRATION_HOOKS}/$hook ]; then
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cp -ar ${BACKUP_DIR}/$hook ${CONFIG_POST_MIGRATION_HOOKS}
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fi
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done
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fi
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}
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# Perform configuration migration from backup copy.
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# - This step is performed when a new image is installed and SONiC switch boots into it
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do_config_migration()
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{
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# Identify list of files to migrate
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copy_list="minigraph.xml snmp.yml acl.json config_db.json frr"
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# Migrate all configuration files from old to new
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copy_config_files_and_directories $copy_list
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# Migrate post-migration hooks
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copy_post_migration_hooks
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# Execute custom hooks if present
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run_hookdir ${CONFIG_POST_MIGRATION_HOOKS} ${CONFIG_SETUP_POST_MIGRATION_FLAG}
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if [ x"${WARM_BOOT}" == x"true" ]; then
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echo "Warm reboot detected..."
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disable_updategraph
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rm -f /tmp/pending_config_migration
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exit 0
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elif [ -r ${CONFIG_DB_JSON} ]; then
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echo "Use config_db.json from old system..."
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sonic-cfggen -j ${CONFIG_DB_JSON} --write-to-db
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if [[ -x /usr/bin/db_migrator.py ]]; then
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# Migrate the DB to the latest schema version if needed
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/usr/bin/db_migrator.py -o migrate
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fi
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elif [ -r ${MINGRAPH_FILE} ]; then
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echo "Use minigraph.xml from old system..."
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reload_minigraph
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sonic-cfggen -d --print-data > ${CONFIG_DB_JSON}
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# Disable updategraph
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disable_updategraph
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else
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echo "Didn't found neither config_db.json nor minigraph.xml ..."
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fi
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rm -f /tmp/pending_config_migration
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}
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# Take a backup of current SONiC configuration
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do_config_backup()
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{
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echo "Taking backup of curent configuration"
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rm -rf /host/old_config
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cp -ar /etc/sonic /host/old_config
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[ -d ${CONFIG_POST_MIGRATION_HOOKS} ] && cp -arL ${CONFIG_POST_MIGRATION_HOOKS} /host/old_config
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# Execute custom hooks if present
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run_hookdir ${CONFIG_PRE_MIGRATION_HOOKS} ${CONFIG_SETUP_PRE_MIGRATION_FLAG}
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}
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# Process switch bootup event
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# - Check if it is warm boot and take no further action
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# - Perform configuration migration if requested
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# - Perform configuration initialization if requested
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# - If no saved SONiC configuration is found and ZTP is enabled,
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# start ZTP
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boot_config()
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{
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check_system_warm_boot
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if [ -e /tmp/pending_config_migration ] || [ -e ${CONFIG_SETUP_POST_MIGRATION_FLAG} ]; then
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do_config_migration
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fi
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if [ -e /tmp/pending_config_initialization ] || [ -e ${CONFIG_SETUP_INITIALIZATION_FLAG} ]; then
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do_config_intialization
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fi
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# If no startup configuration is found, create a configuration to be used
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if [ ! -e ${CONFIG_DB_JSON} ]; then
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do_config_intialization
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# force ZTP to restart
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if ztp_is_enabled ; then
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ztp_status=$(ztp status -c)
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if [ "$ztp_status" = "5:SUCCESS" ] || \
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[ "$ztp_status" = "6:FAILED" ]; then
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# Clear completed ztp information, before starting a new one
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ztp erase -y
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else
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touch /tmp/pending_ztp_restart
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fi
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fi
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fi
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}
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### Execution starts here ###
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CMD=$1
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# Default command is boot
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if [ "$CMD" = "" ] || [ "$CMD" = "help" ] || \
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[ "$CMD" = "-h" ] || [ "$CMD" = "--help" ]; then
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usage
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exit 1
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fi
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# Process switch bootup event
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if [ "$CMD" = "boot" ]; then
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boot_config
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fi
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# Process factory default configuration creation request
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if [ "$CMD" = "factory" ]; then
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generate_config factory ${CONFIG_DB_JSON}
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fi
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# Take a backup of current configuration
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if [ "$CMD" = "backup" ]; then
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do_config_backup
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fi
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exit 0
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@ -26,32 +26,6 @@ reload_minigraph()
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fi
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}
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function copy_config_files_and_directories()
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{
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for file_dir in $@; do
|
||||
if [ -f /etc/sonic/old_config/${file_dir} ] || [ -d /etc/sonic/old_config/${file_dir} ]; then
|
||||
logger "Copying SONiC configuration ${file_dir} ..."
|
||||
cp -ar /etc/sonic/old_config/${file_dir} /etc/sonic/
|
||||
else
|
||||
logger "Missing SONiC configuration ${file_dir} ..."
|
||||
fi
|
||||
done
|
||||
|
||||
sync
|
||||
}
|
||||
|
||||
function check_system_warm_boot()
|
||||
{
|
||||
SYSTEM_WARM_START=`/usr/bin/redis-cli -n 6 hget "WARM_RESTART_ENABLE_TABLE|system" enable`
|
||||
# SYSTEM_WARM_START could be empty, always make WARM_BOOT meaningful.
|
||||
if [[ x"$SYSTEM_WARM_START" == x"true" ]]; then
|
||||
WARM_BOOT="true"
|
||||
else
|
||||
WARM_BOOT="false"
|
||||
fi
|
||||
}
|
||||
|
||||
|
||||
if [ ! -f /etc/sonic/updategraph.conf ]; then
|
||||
echo "No updategraph.conf found, generating a default one."
|
||||
echo "enabled=false" >/etc/sonic/updategraph.conf
|
||||
@ -59,46 +33,6 @@ fi
|
||||
|
||||
. /etc/sonic/updategraph.conf
|
||||
|
||||
check_system_warm_boot
|
||||
copy_list="minigraph.xml snmp.yml acl.json config_db.json frr"
|
||||
if [ -f /tmp/pending_config_migration ]; then
|
||||
copy_config_files_and_directories $copy_list
|
||||
if [ x"${WARM_BOOT}" == x"true" ]; then
|
||||
echo "Warm reboot detected..."
|
||||
elif [ -r /etc/sonic/config_db.json ]; then
|
||||
echo "Use config_db.json from old system..."
|
||||
sonic-cfggen -j /etc/sonic/config_db.json --write-to-db
|
||||
|
||||
if [[ -x /usr/bin/db_migrator.py ]]; then
|
||||
# Migrate the DB to the latest schema version if needed
|
||||
/usr/bin/db_migrator.py -o migrate
|
||||
fi
|
||||
elif [ -r /etc/sonic/minigraph.xml ]; then
|
||||
echo "Use minigraph.xml from old system..."
|
||||
reload_minigraph
|
||||
sonic-cfggen -d --print-data > /etc/sonic/config_db.json
|
||||
else
|
||||
echo "Didn't found neither config_db.json nor minigraph.xml ..."
|
||||
fi
|
||||
rm -f /tmp/pending_config_migration
|
||||
sed -i "/enabled=/d" /etc/sonic/updategraph.conf
|
||||
echo "enabled=false" >> /etc/sonic/updategraph.conf
|
||||
exit 0
|
||||
fi
|
||||
|
||||
if [ -f /tmp/pending_config_initialization ]; then
|
||||
rm -f /tmp/pending_config_initialization
|
||||
if [ "$enabled" != "true" ]; then
|
||||
PLATFORM=`sonic-cfggen -H -v DEVICE_METADATA.localhost.platform`
|
||||
PRESET=(`head -n 1 /usr/share/sonic/device/$PLATFORM/default_sku`)
|
||||
sonic-cfggen -H -k ${PRESET[0]} --preset ${PRESET[1]} > /etc/sonic/config_db.json
|
||||
redis-cli -n $CONFIG_DB_INDEX FLUSHDB
|
||||
sonic-cfggen -j /etc/sonic/config_db.json --write-to-db
|
||||
redis-cli -n $CONFIG_DB_INDEX SET "CONFIG_DB_INITIALIZED" "1"
|
||||
exit 0
|
||||
fi
|
||||
fi
|
||||
|
||||
if [ "$enabled" = "reload_only" ]; then
|
||||
reload_minigraph
|
||||
sed -i "/enabled=/d" /etc/sonic/updategraph.conf
|
||||
@ -111,6 +45,12 @@ if [ "$enabled" != "true" ]; then
|
||||
exit 0
|
||||
fi
|
||||
|
||||
# If ZTP package is available and enabled, use ZTP to download and load the graph.
|
||||
if [ -e /usr/bin/ztp ] && [ "$(ztp status -c)" != "0:DISABLED" ]; then
|
||||
echo "ZTP is available and enabled. Skipping graph update."
|
||||
exit 0
|
||||
fi
|
||||
|
||||
ACL_URL=$acl_src
|
||||
|
||||
if [ "$src" = "dhcp" ]; then
|
||||
|
||||
Loading…
Reference in New Issue
Block a user