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Changes in v1.9.3

Maintenance Release: May 13th, 2022

  • Build:
    • clustercontrol-controller-1.9.3-5451
  • Controller:
    • Address an issue where pg_backrest created the directory /home/pgbackrest. It now uses /var/lib/pgbackrest instead (CLUS-1173)
    • Address an issue with warnings of a non-existing maxscale1.log file (CLUS-1246)
    • Address an issue with Microsoft SQL Server deployment due to the failure of creating a SA user (CCv2-281)

Initial Release: May 11th, 2022

  • Build:
    • clustercontrol-1.9.3-8303
    • clustercontrol-controller-1.9.3-5439
    • clustercontrol-cloud-1.9.3-350
    • clustercontrol-notifications-1.9.3-310
    • clustercontrol-ssh-1.9.3-122
    • clustercontrol2-0.6.0-425

With our second major release of ClusterControl in 2022, we are excited to introduce support for the community edition of Elasticsearch 7.x and 8.x. It’s one of the most popular open-source full-text search and analytics engines on the market today and provides near real-time search and analytics for any kind of data, whether structured or unstructured.

In this initial version, you can use Elasticsearch with single node deployment for development or use it for production in a clustered deployment complete with backup management and scaling.

ClusterControl v2 (new web frontend) is becoming more feature complete and we have added support for Elasticsearch, MySQL Galera, PostgreSQL, TimescaleDB, and MongoDB Replicaset.

We still have some ways to go, however more of the core features to manage our full range of supported database technologies are becoming available to use.

In ClusterControl v1’s web application there is now a dedicated audit log page to track user and system activities for increased security and compliance.


Elasticsearch 7.x, 8.x

  • Full-text search and analytics engine.
    • Deploy one node for test or development environments
    • Deploy three or more nodes for clustered deployments with master or data roles
    • Basic User Authentication with username and password
    • TLS/SSL API endpoint encryption
    • Backup Management with local storage repository
    • Scaling out or in master or data nodes
  • Current limitations:
    • No cloud storage (object) repository
    • No dashboards/performance charts
    • Only Ubuntu 20.04 and RedHat/CentOS 8 are supported
    • Configuration files management and Upgrades are not supported at this time

Audit Logging

  • The new Audit Log page is accessible via the Activity → Audit Log (ClusterControl v1 web frontend) and Activity Center (ClusterControl v2 web frontend)
  • Activities tracked:
    • User authentication, cloud credentials, database configuration, and users changes
    • CMON configuration changes and jobs
    • CC user management changes (Users and ACLs), operational report
  • New CMON audit log configuration parameters
    • audit_logfile, default log filename (/var/log/cmon_audit.log)
    • audit_ignore_users, skip default users (system, ccrpc).


  • Streaming backups with xtrabackup can now be compressed with the addition of new CMON configuration parameters (no frontend at this time)
    • xtrabackup_compress_threads, xtrabackup_parallel, xtrabackup_manual_args
  • The cluster overview in ClusterControl v1 application is now using data from the Prometheus server (if available)
  • Delete local backup after cloud upload
  • New bootstrap option when starting Galera nodes

ClusterControl v2

  • Deploy/Import and manage MySQL Galera, PostgreSQL, TimescaleDB and MongoDB Replicaset clusters
    • Backup management, Cluster, and node actions
    • Dashboards/performance charts for database and load balancers
  • Deploy/Import and manage HAProxy with Keepalived
    • HAProxy status/performance node page
  • SSH host health-check to verify SSH connectivity
  • Multiple maintenance modes
  • Rebuild node for Microsoft SQL Server nodes


Q: How can I start using Elasticsearch?

A: Please follow the instructions outlined in the Getting Started with ClusterControl v2 to install ClusterControl v2 and then use the Service Deployment wizard to deploy an Elasticsearch cluster.

Q: Can I separate the location of my Elasticsearch master and data nodes?

A: Yes, you can separate the master and data nodes to be on different hosts.

Q: What are the minimum requirements for a clustered Elasticsearch deployment?

A: Yes, you can separate the master and data nodes to be on different hosts.

You need:

  • At least three nodes in the master role
  • At least two nodes in the data role
  • At least two nodes of each role; master and data

Q: Can I rebuild an Elasticsearch node?

A: No there is no need, the Elasticsearch cluster automatically partitions the dataset across all available data nodes. You can remove and add a data node if you need to for example terminate and relaunch the VM the node runs on.

Q: Can I deploy other load balancers like ProxSQL with ClusterControl v2’s web application?

A: Not yet with this release, unfortunately. We are working on adding the remaining supported load balancers and connection pooling. Expect it to be available in an upcoming release of the ClusterControl v2’s user interface.

  • ProxySQL
  • MaxScale
  • Garbd
  • PgBouncer
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