How Odoo ensures Reliability & High Availability?

In mission critical companies, one need to setup ERP in such a way that ensures high availability and reliability. High Availability (HA) ensures that the Odoo system remains accessible, responsive, and operational even during peak loads, hardware failures, or system upgrades.

Key Components of High Availability:

1. Load Balancing
   • Distributes incoming traffic across multiple Odoo workers or servers.
   • Prevents any single server from becoming a bottleneck.
   • Tools: Nginx, HAProxy, or cloud load balancers.
2. Odoo Workers & Multi-threading
   • Odoo uses a multi-worker architecture (via Gunicorn) to handle concurrent users efficiently.
   • Configuring multiple workers allows parallel processing, reducing downtime due to worker failure.
3. Database High Availability
   • PostgreSQL clustering or replication (e.g., streaming replication or Patroni).
   • Ensures that if one database server fails, another can take over.
4. File Storage Redundancy
   • Static and uploaded files (attachments, images, etc.) are stored in redundant systems like:
     • Amazon S3 or other object storage services.
     • NFS-mounted shared drives in clusters.
5. Containerization and Orchestration
   • Using Docker + Kubernetes for automatic container scaling and self-healing.
   • Failed instances are restarted automatically.
6. Session Persistence / Sticky Sessions
   • Ensures user sessions are preserved across requests.
   • Required when running multiple Odoo instances behind a load balancer.

Disaster Recovery Measures

Disaster Recovery (DR) refers to strategies to recover Odoo services and data in case of unexpected events like system crashes, data corruption, or security breaches.

🔹 Key DR Strategies:

1. Regular Backups
   • Full database and file storage backups on a daily (or hourly) schedule.
   • Backup solutions: pg_dump, Odoo's built-in backup tool, or automated scripts.
   • Cloud storage for offsite backups (e.g., AWS S3, Google Cloud Storage).
2. Backup Rotation & Retention Policies
   • Keep multiple historical backups (daily, weekly, monthly).
   • Old backups are pruned based on retention rules.
3. Automated Backup Verification
   • Regular restore testing of backups to ensure backup integrity.
4. Redundant Infrastructure
   • Replication of servers and storage across multiple data centers (multi-AZ or multi-region).
   • Ensures service continuity in case of hardware failure or network outage.
5. Disaster Recovery Plan (DRP)
   • A documented process including:
     • Recovery Point Objective (RPO): Maximum acceptable data loss.
     • Recovery Time Objective (RTO): Maximum acceptable downtime.
     • Roles and responsibilities during a disaster event.

Monitoring & Alerting

• Real-time monitoring of server resources, database health, and application metrics.
  • Tools: Prometheus, Grafana, Zabbix, New Relic, UptimeRobot.
• Automated alerts (via email, SMS, Slack) in case of performance degradation or system failure.

High Availability on Odoo.sh or Odoo Online

For hosted Odoo platforms:

🧩 Summary