Bivac - Container Volumes Backup
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The document discusses Bivac, an open-source backup tool designed for container volumes used in systems such as Docker and Kubernetes. It details the installation process, backup procedures, and metrics for monitoring backups, emphasizing best practices for managing container storage. Bivac supports automated backups and provides integration with Prometheus for monitoring and alerting purposes.
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Metrics
■ Bivac exposes backup metrics
■ Can be scraped by Prometheus:
---
scrape_configs:
- job_name: 'bivac'
static_configs:
- targets: ['bivac:8182']
■ Can be used in Grafana to generate graphs](https://image.slidesharecdn.com/2020-05-28cloudnativemeetupbivac-201127091517/85/Bivac-Container-Volumes-Backup-13-320.jpg)
Bivac - Container Volumes Backup
- 2. 2/ Raphaël Pinson ● Infrastructure Developer ● Trainer ● DevOps Practitioner ● Puppet, Augeas, Terraform, Kubernetes
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- 4. 4/ Good Practices Containers should be stateless, either: ○ No persistent data ○ Database ○ Object storage
- 5. 5/ Reality Many containers need local storage ○ in Docker: Docker volume ○ in Kubernetes: PVC/PV ○ (in Rancher 1: Rancher volume)
- 6. 6/ Backing up data Two approaches ○ infrastructure: ■ disaster recovery ■ physical drives (snapshots, etc.) ○ applications: ■ app backup ■ per data location
- 7. 7/ How to backup ■ Traditionally ○ location unknown ○ custom scripts ■ In containers ○ location known (named volume) ○ possible to automate
- 8. 8/ Bivac ■ Open-source backup tool for container volumes ■ Supports: ○ Docker (local volumes) ○ Kubernetes (PVC) ○ Rancher (Rancher Volumes)
- 9. 9/ Install: locally --- version: '3' services: bivac: image: camptocamp/bivac:2.2 command: "manager -v" ports: - "8182:8182" volumes: - "/var/run/docker.sock:/var/run/docker.sock:ro" environment: BIVAC_AGENT_IMAGE: camptocamp/bivac:2.1 BIVAC_SERVER_PSK: super-secret-psk RESTIC_PASSWORD: not-so-good-password BIVAC_TARGET_URL: s3:my-bucket AWS_ACCESS_KEY_ID: XXXXX AWS_SECRET_ACCESS_KEY: XXXXX
- 10. 10/ Install: Helm (k8s) $ helm repo add camptocamp http://charts.camptocamp.com $ helm install camptocamp/bivac --version 1.0.0
- 11. 11/ Performing & listing backups $ bivac backup ssh_config Backing up `ssh_config'... ID: ssh_config Name: ssh_sshconfig Mountpoint: /etc/ssh Backup date: 2019-06-13 09:35:38 Backup status: Success ... $ bivac volumes ID Name Hostname Mountpoint LastBackupDate LastBackupStatus Backing up mysql mysql testing /var/lib/mysql 2019-06-13 01:33:44 Success false ssh_config ssh_config testing /etc/ssh 2019-06-13 01:43:12 Success false
- 12. 12/ Restoring backups $ bivac restore canary Restoring `canary'... ID: canary Name: canary Mountpoint: /var/lib/docker/volumes/canary/_data Backup date: 2019-06-13 07:56:36 Backup status: Success ...
- 13. 13/ Metrics ■ Bivac exposes backup metrics ■ Can be scraped by Prometheus: --- scrape_configs: - job_name: 'bivac' static_configs: - targets: ['bivac:8182'] ■ Can be used in Grafana to generate graphs
- 14. 14/ Metrics: alerting ■ Use Prometheus metrics with AlertManager: --- groups: - name: example rules: - alert: BackupError expr: bivac_backupExitCode{} > 0 - alert: BackupOutdated expr: time() - bivac_lastBackup{} > 49 * 3600
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