Update Helm release postgresql to v16 #50
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WalkthroughThe pull request updates the dependency version of PostgreSQL in the Changes
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Actionable comments posted: 2
📜 Review details
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Review profile: ASSERTIVE
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charts/dave/Chart.lockis excluded by!**/*.lock
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charts/dave/Chart.yaml(1 hunks)
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charts/dave/Chart.yaml (1)
22-22:❓ Verification inconclusive
Verify Bitnami PostgreSQL chart compatibility.
Let's check the compatibility and requirements for the Bitnami PostgreSQL Helm chart version 16.4.8.
🌐 Web query:
What are the requirements and breaking changes in Bitnami PostgreSQL Helm chart version 16.4.8?💡 Result:
The specific requirements and breaking changes for Bitnami PostgreSQL Helm chart version 16.4.8 aren't explicitly detailed in the provided search results, but we can infer critical considerations from related context about Bitnami PostgreSQL Helm chart upgrades:
Key Requirements
Storage Configuration
- Ensure Persistent Volume Claims (PVCs) use compatible storage classes[1][5][9].
- If reusing existing PVCs from previous installations, enable
volumePermissions.enabled=trueto resolve filesystem permission issues[2][5].Credential Management
- Always specify passwords via
existingSecretduring upgrades to avoid credential mismatches[2][9]. Randomly generated credentials during upgrades can break database access[2].Kubernetes Compatibility
- Verify compatibility with your Kubernetes cluster version (e.g., StatefulSet API changes)[4].
Potential Breaking Changes
While no direct details for 16.4.8 exist in the sources, common breaking changes in Bitnami PostgreSQL charts include:
StatefulSet Spec Modifications
- Upgrades may fail if Helm attempts to modify immutable fields (e.g.,
specchanges beyondreplicas,template, orupdateStrategy). This often requires deleting and recreating the StatefulSet[4][9].Major Version Upgrades
- Jumping multiple major versions (e.g., PostgreSQL 14 → 16) may require manual database migration or downtime[4][9].
Chart Dependency Updates
- Sub-chart dependencies (e.g.,
common) might introduce new requirements for secrets or storage classes[8][9].
Upgrade Recommendations
- Backup Data: Use tools like
pg_dumpor volume snapshots before upgrading[5][9].- Test in Staging: Validate upgrades in a non-production environment[2][4].
- Review Changelogs: Check Bitnami’s GitHub repository or Artifact Hub for version-specific notes[7][8].
For precise details on version 16.4.8, consult the official Bitnami PostgreSQL Helm chart documentation[7][9].
Citations:
- 1: https://blog.devgenius.io/postgres-helm-installation-ad30e9056018
- 2: https://docs.bitnami.com/kubernetes/faq/troubleshooting/troubleshooting-helm-chart-issues/
- 3: https://github.com/bitnami/charts/blob/master/bitnami/postgresql/Chart.yaml
- 4: https://open.greenhost.net/openappstack/nextcloud/-/issues/981
- 5: https://phoenixnap.com/kb/postgresql-kubernetes
- 6: Stopped After Last Update (docker pull) bitnami/containers#74788
- 7: https://artifacthub.io/packages/helm/bitnami/postgresql?modal=values&path=primary.nodeSelector
- 8: https://blog.bitnami.com/2024/05/enhancing-bitnami-helm-charts.html
- 9: https://blog.stonegarden.dev/articles/2024/10/k8s-postgres/
- 10: https://hub.docker.com/r/bitnamicharts/postgresql/tags
Verify Bitnami PostgreSQL Helm Chart Compatibility for v16.4.8
It looks like the chart version in
charts/dave/Chart.yaml(line 22) is set to16.4.8. Please review the following points to ensure full compatibility with this Bitnami PostgreSQL version:
- Storage & Volume Permissions: Confirm that persistent volume claims are using a compatible storage class. If you're reusing PVCs from previous installs, ensure that
volumePermissions.enabledis set appropriately.- Credential Management: Make sure that your upgrades consistently use an
existingSecretto manage passwords, avoiding credential mismatches that can occur with generated credentials.- Kubernetes Compatibility: Verify your Kubernetes cluster version aligns with the chart’s requirements—watch for issues related to StatefulSet spec modifications and immutable fields.
- Upgrade Concerns: Keep in mind potential stateful set changes and any major version jumps that might require manual interventions or migrations. It’s advisable to consult the official Bitnami PostgreSQL documentation for any version-specific breaking changes.
charts/dave/Chart.yaml
Outdated
| @@ -19,7 +19,7 @@ dependencies: | |||
| version: 19.17.0 | |||
| - name: postgresql | |||
| repository: https://charts.bitnami.com/bitnami | |||
| version: 14.3.3 | |||
| version: 16.4.8 | |||
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🧹 Nitpick (assertive)
Document upgrade steps in values.yaml.
Consider adding upgrade-specific configurations in the values.yaml file to handle the migration smoothly.
Key considerations:
- Set appropriate resource limits for the upgrade process
- Configure backup strategy before upgrade
- Set up appropriate init containers for schema migrations if needed
- Consider enabling/configuring the
postgresql.upgradeReplicationvalue
Would you like me to provide a template for the required values.yaml configurations?
❓ Verification inconclusive
Major PostgreSQL version upgrade requires careful consideration.
This is a significant upgrade from PostgreSQL 14 to 16, which requires careful planning and testing. Major version upgrades can introduce breaking changes and require data migration.
Before proceeding:
- Verify application compatibility with PostgreSQL 16
- Document and test the upgrade process
- Plan for data migration
- Consider staging environment testing first
Let me help verify the changelog and migration requirements:
🌐 Web query:
What are the breaking changes and migration requirements for upgrading from PostgreSQL 14 to PostgreSQL 16?
💡 Result:
Upgrading from PostgreSQL 14 to 16 involves both breaking changes and specific migration requirements, as detailed below:
Breaking Changes
-
Replication Permissions
- Users granted
SET,ALTER SYSTEM, or replication permissions must now explicitly holdCREATEDB,REPLICATION, orBYPASSRLSattributes[7][10]. - Example: Replication roles lacking these permissions will fail after upgrade.
- Users granted
-
Symbolic Link Removal
- The
postmasterbinary symbolic link has been removed; usepostgresdirectly[7].
- The
-
Authentication Configuration
- Enhanced regex support for user/database names in
pg_hba.confmay require syntax validation if regex patterns were previously used[7].
- Enhanced regex support for user/database names in
-
Aggregate Function Handling
- The
enable_presorted_aggregateserver variable defaults to "on," potentially altering query execution plans[7].
- The
Migration Requirements
Method Selection
pg_upgrade: Recommended for direct upgrades (minimal downtime)[2][6].- Dump/Restore: Required if skipping multiple versions or encountering compatibility issues[2][6].
Step-by-Step Process
-
Pre-Upgrade Checks
- Backup databases[9].
- Verify OS compatibility (e.g., Ubuntu ≥22.04 requires PostgreSQL ≥16)[5].
-
Install PostgreSQL 16
- Install binaries separately without overwriting existing versions[3][8].
-
Stop Services
systemctl stop postgresql-14.service
-
Execute Upgrade
/usr/pgsql-16/bin/pg_upgrade -b /usr/pgsql-14/bin -B /usr/pgsql-16/bin \ -d /var/lib/pgsql/14/data -D /var/lib/pgsql/16/data -j 4
- Adjust paths/ports as needed[3][8].
-
Update Configurations
- Merge custom settings from old
postgresql.confinto the new version[8]. - Copy
pg_hba.conffrom PostgreSQL 14 to 16’s data directory[8].
- Merge custom settings from old
-
Post-Upgrade Tasks
VACUUM (PARALLEL 4, ANALYZE);- Rebuild indexes and update statistics[2][6].
Platform-Specific Notes
- Windows: Use PowerShell escaping for paths with spaces[3]:
& "C:\Program Files\PostgreSQL\16\bin\pg_upgrade" --old-datadir="C:\Data\14" --new-datadir="C:\Data\16"
- AWS RDS: Use managed major version upgrade tools after testing[9].
Performance Considerations
- Parallelized
FULL/OUTERhash joins improve query efficiency[7]. - Monitor I/O via
pg_stat_iopost-upgrade[7].
This upgrade path balances minimal downtime with careful validation of permissions and configurations to avoid disruptions. Always test migrations in staging environments first[5][9].
Citations:
- 1: https://folio-org.atlassian.net/wiki/spaces/TC/pages/5057452/DR-000038+-+PostgreSQL+Upgrade+to+16
- 2: https://support.ptc.com/help/codebeamer/r2.2/en/codebeamer/admin_guide/ag_postgresql_migrate_12to16.html
- 3: https://gist.github.com/truemogician/610300dd8e86f7a8ad01f73b9da1ff1a
- 4: https://www.directedignorance.com/blog/upgrading-postgresql-14-to-16-on-ubuntu
- 5: https://docs.zextras.com/carbonio-ce/html/upgrade/pg.html
- 6: https://stormatics.tech/blogs/using-pg_upgrade-to-upgrading-your-postgresql-cluster-on-windows
- 7: https://www.postgresql.org/docs/release/16.0/
- 8: https://www.winccoa.com/documentation/WinCCOA/latest/en_US/NGA/topics/nga_postgre_db_postgre_dbms_winccoa_db_upgrade.html
- 9: https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_UpgradeDBInstance.PostgreSQL.MajorVersion.Process.html
- 10: https://www.postgresql.org/docs/14/release-14.html
Major PostgreSQL upgrade identified — verify compatibility and migration steps.
This upgrade from PostgreSQL 14 to 16 introduces significant changes, including adjustments in replication permissions, removal of symbolic links, and revised authentication handling. Given these breaking changes and migration requirements, please ensure that:
- Application compatibility with PostgreSQL 16 is thoroughly verified.
- A detailed, documented upgrade plan (covering pre-upgrade checks, backup, and migration steps such as using
pg_upgradeor dump/restore where applicable) is in place. - Comprehensive testing (preferably in a staging environment) is conducted to validate the changes.
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This PR contains the following updates:
14.3.3->16.4.9Release Notes
bitnami/charts (postgresql)
v16.4.9v16.4.8v16.4.7v16.4.6v16.4.5v16.4.4v16.4.3v16.4.2v16.4.1v16.3.5v16.3.4v16.3.3v16.3.2v16.3.1v16.3.0v16.2.5v16.2.4v16.2.3v16.2.2v16.2.1v16.2.0v16.1.2v16.1.1v16.1.0namespaceOverride(#30113) (4253372), closes #30113v16.0.6v16.0.5v16.0.4v16.0.3v16.0.2v16.0.1v16.0.0v15.5.38v15.5.37v15.5.36v15.5.35v15.5.34v15.5.33v15.5.32v15.5.31v15.5.30v15.5.29v15.5.28v15.5.27v15.5.26v15.5.25v15.5.24v15.5.23v15.5.22v15.5.21v15.5.20v15.5.19v15.5.18v15.5.17v15.5.16v15.5.15v15.5.14v15.5.13v15.5.12v15.5.11v15.5.10v15.5.9v15.5.8v15.5.7v15.5.6v15.5.5v15.5.4v15.5.3v15.5.2v15.5.1v15.5.0v15.4.2v15.4.1v15.4.0v15.3.5v15.3.4v15.3.3v15.3.2v15.3.1v15.3.0v15.2.13v15.2.12v15.2.11v15.2.10v15.2.9v15.2.8v15.2.7v15.2.6v15.2.5v15.2.4v15.2.3v15.2.2v15.2.1v15.2.0v15.1.4v15.1.3v15.1.2v15.1.1v15.1.0v15.0.0Configuration
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