Google Cloud SQL Proxy

cloud-sql-proxy.service

## https://cloud.google.com/sql/docs/mysql/sql-proxy
## install Google cloudsql proxy
# wget https://dl.google.com/cloudsql/cloud_sql_proxy.linux.amd64 -O cloud_sql_proxy
# sudo mv cloud_sql_proxy /usr/local/bin/
# sudo chmod +x /usr/local/bin/cloud_sql_proxy
# sudo nano /etc/systemd/system/cloud-sql-proxy.service
# create sql user '[USER_NAME]'@'cloudsqlproxy~%'
# sudo systemctl daemon-reload
# sudo systemctl enable cloud-sql-proxy
# sudo systemctl start cloud-sql-proxy
# sudo systemctl status cloud-sql-proxy

## This is CentOS, on Debian network.target maybe different.

## [START] /etc/systemd/system/cloud-sql-proxy.service 
[Install]
WantedBy=multi-user.target

[Unit]
Description=Google Cloud Compute Engine SQL Proxy
Requires=network.target
After=network.target

[Service]
Type=simple
WorkingDirectory=/usr/local/bin
# you may need -credential_file=[PATH_TO_KEY_FILE]
ExecStart=/usr/local/bin/cloud_sql_proxy -instances=PROJECT:REGION:SQL_INSTANCE=tcp:3306
Restart=always
StandardOutput=journal
User=root
## [END] /etc/systemd/system/cloud-sql-proxy.service