HOWTO: USERSIDE cloning

Copy of system for testing or research

If you need to make a copy of the system to try out the new version before the actual upgrade, or to do anything else, there are a few simple steps to follow:

copy the application files

cd /var/www/
sudo cp -r userside userside-copy

configure the web server to work with the copy - copy the configuration file, edit and re-read the nginx configuration:

sudo cp /etc/nginx/conf.d/userside.conf /etc/nginx/conf.d/userside-copy.conf
sudo sed -i "s@/var/www/userside/userside3@/var/www/userside-copy/userside3@" "/etc/nginx/conf.d/userside-copy.conf"
sudo sed -i "s@/var/log/nginx/userside@/var/log/nginx/userside-copy@" "/etc/nginx/conf.d/userside-copy.conf"
sudo sed -i "s@старое.доменное.имя@новое.доменное.имя@" "/etc/nginx/conf.d/userside-copy.conf"
sudo systemctl reload nginx

Copy the database (or create a new database and restore it from a backup):

sudo -u postgres createdb -e --encoding="UTF-8" --locale="ru_RU.UTF-8" --owner=userside --template=userside userside_copy

If you are copying the database to another server, you will need to create a role, necessarily the same as in the dump, before restoring it:

sudo -u postgres createuser userside -P

In version 3.13 and newer, go to the directory with the new copy, edit the environment variables in the .env file so that they work with the new database and with the other (free) redis database (in the main installation you probably have the redis database number 0; you can use the other 15 available by default). Variables are responsible for this:

US_URL=http://new.domain.name
US_DB_DSN=pgsql:host=localhost;dbname=userside_copy;port=5432
US_REDIS_DB=1

For versions up to 3.13, edit the database connection parameters in common/config/db.php and the URL in userside3/main/config/config.php

In version 3.16 and newer you need to create an additional vhost for RabbitMQ, and then specify it in the .env file for the US_AMQP_DSN variable. The example below uses copy as the name of the new vhost (change to something more convenient for you if necessary). First run the command that creates the vhost, then add permissions for users within that vhost:

sudo rabbitmqctl add_vhost copy
sudo rabbitmqctl set_permissions -p "copy" "admin" ".*" ".*" ".*"
sudo rabbitmqctl set_permissions -p "copy" "userside" ".*" ".*" ".*"
sudo rabbitmqctl set_permissions -p "copy" "websock-user" "^userside-stomp:id-.*" "" "^userside-stomp:id-.*"
sudo rabbitmqctl --vhost copy set_user_tags "userside" "monitoring"

Now change the variable US_AMQP_DSN of the .env file this way:

US_AMQP_DSN=amqp://userside:yourpassword@127.0.0.1:5672/copy

In version 3.16 and newer you will also need to recreate the venv for the poller microservice:

cd /var/www/userside-copy/microservice/poller
sudo rm -rf venv
sudo -H python3 -m venv venv
sudo -H venv/bin/pip install --upgrade -r requirements.txt

Also starting with version 3.16 you will need to copy the supervisor configuration for the kernel background processes and the poller microservice. Also note that before version 3.18 the usm_poller.conf file was called us-poller-microservice.conf:

sudo cp /etc/supervisor/conf.d/us-core-worker.conf /etc/supervisor/conf.d/us-copy-core-worker.conf
sudo sed -i "s@us-core-worker@us-copy-core-worker@" "/etc/supervisor/conf.d/us-copy-core-worker.conf"
sudo sed -i "s@/var/www/userside/@/var/www/userside-copy/@" "/etc/supervisor/conf.d/us-copy-core-worker.conf"

sudo cp /etc/supervisor/conf.d/usm_poller.conf /etc/supervisor/conf.d/usm_poller_copy.conf
sudo sed -i "s@usm_poller@usm_poller_copy@" "/etc/supervisor/conf.d/usm_poller_copy.conf"
sudo sed -i "s@/var/www/userside/@/var/www/userside-copy/@" "/etc/supervisor/conf.d/usm_poller_copy.conf"

sudo systemctl restart supervisor

it is now possible to open your copy in the browser.