Magento 2 Atomic Config Changes

m2_atomic_config_deployment.sh

# Make a backup of the config
cp -a app/etc/env.php app/etc/env.php.bak

# Create new config file to use for replacement
cp -a app/etc/env.php app/etc/env.php.new

# Edit new config
vi app/etc/env.php.new

# Confirm syntax on file
php -l app/etc/env.php.new



# Put site in maintenance mode
bin/magento maintenance:enable

# Atomically replace old config file
mv app/etc/env.php.new app/etc/env.php

# Process config file differences
bin/magento app:config:import

# Take site out of maintenance mode
bin/magento maintenance:disable



# Chained One line Config Deployment
bin/magento maintenance:enable && mv app/etc/env.php.new app/etc/env.php && bin/magento app:config:import && bin/magento maintenance:disable



# Recover from backup
cp -a app/etc/env.php.bak app/etc/env.php