PgBouncer is a popular lightweight connection pooler for PostgreSQL, effectively managing database connections for improved performance. This guide provides detailed steps for installing and configuring PgBouncer for optimal PostgreSQL thread handling.
Update Package List (Ubuntu):
sudo apt-get update
For CentOS/RHEL, use sudo yum update
.
Install PgBouncer:
Ubuntu:
sudo apt-get install pgbouncer
CentOS/RHEL:
sudo yum install pgbouncer
/etc/pgbouncer/pgbouncer.ini
.sudo nano /etc/pgbouncer/pgbouncer.ini
.Set the listening address and port:
[databases]
your_database_name = host=127.0.0.1 port=5432 dbname=your_database_name
[pgbouncer]
listen_addr = 127.0.0.1
listen_port = 6432
your_database_name
should be replaced with your actual database name.
Specify the user authentication file (usually userlist.txt
):
auth_type = md5
auth_file = /etc/pgbouncer/userlist.txt
In userlist.txt
, add users and passwords in the format "username" "password"
.
Choose a pool mode (session, transaction, or statement pooling):
pool_mode = session
Max Client Connections:
max_client_conn = 100
Default Pool Size:
default_pool_size = 20
/etc/pgbouncer/userlist.txt
."username" "md5encryptedpassword"
.pg_md5
to encrypt passwords.Start the PgBouncer Service:
Ubuntu/CentOS:
sudo systemctl start pgbouncer
Ensure the service is enabled to start on boot:
sudo systemctl enable pgbouncer
Verify PgBouncer is Running:
Check the status:
sudo systemctl status pgbouncer
Connect using a PostgreSQL client, specifying PgBouncer's port:
psql -h 127.0.0.1 -p 6432 -U username dbname
By following these steps, you will have successfully installed and configured PgBouncer for PostgreSQL. This setup will help manage database connections more efficiently, leading to improved performance, especially in environments with high concurrent connections. Regular monitoring and fine-tuning of PgBouncer's settings based on your specific workload can further enhance its effectiveness.