{"id":11263,"date":"2021-06-10T08:39:31","date_gmt":"2021-06-10T15:39:31","guid":{"rendered":"https:\/\/www.couchbase.com\/blog\/?p=11263"},"modified":"2025-06-13T22:08:21","modified_gmt":"2025-06-14T05:08:21","slug":"announcing-couchbase-autonomous-operator-2-2","status":"publish","type":"post","link":"https:\/\/www.couchbase.com\/blog\/announcing-couchbase-autonomous-operator-2-2\/","title":{"rendered":"Announcing Couchbase Autonomous Operator 2.2"},"content":{"rendered":"<p>Today we are announcing the General Availability of <strong><em>Couchbase Autonomous Operator for Kubernetes (CAO) Version 2.2.<\/em><\/strong><\/p>\n<p>This release provides an automated cloud-native database experience with exciting new features and improvements, such as:<\/p>\n<ul>\n<li style=\"list-style-type: none\">\n<ul>\n<li>Auto-scaling Couchbase services<\/li>\n<li>Online storage scaling (scale up your storage without having to restart pods)<\/li>\n<li>Centralized log forwarding and automated audit logging with <a href=\"https:\/\/www.couchbase.com\/blog\/fluent-bit-tips-tricks-log-forwarding-couchbase\/\">Fluent Bit<\/a><\/li>\n<li>Couchbase server-group customization<\/li>\n<li>Online backup volume resizing<\/li>\n<li>Custom upgrades<\/li>\n<li>Automatic resource allocation<\/li>\n<li>A new tool: <code>cbsbctl<\/code> (a tool to effectively reduce the number of steps in the Couchbase Service Broker deployments)<\/li>\n<li>Helm improvements<\/li>\n<li>Prometheus improvements<\/li>\n<li>Backup\/Restore improvements<\/li>\n<li>TLS Settings<\/li>\n<li>CERT Manager integration<\/li>\n<li>XDCR admin password rotation<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>Let&#8217;s take a closer look at what&#8217;s inside CAO 2.2.<\/p>\n<h3>Auto-Scaling Couchbase Services<\/h3>\n<p>In <a href=\"https:\/\/www.couchbase.com\/blog\/couchbase-autonomous-operator-2-1-for-kubernetes-is-now-ga\/?ref=blog\" target=\"_blank\" rel=\"noopener\">the previous release (CAO 2.1)<\/a> release, we announced the auto-scaling of stateless Couchbase services and promised to soon announce the auto-scaling of stateful Couchbase services. Today, we are announcing support for <strong><em>auto-scaling of all Couchbase services,<\/em><\/strong> in CAO 2.2. It is critical to understand what metrics to use to set the thresholds to maintain the consistent performance and productivity of your applications, so we&#8217;ve included best practice recommendations with some key metrics for Couchbase services.<\/p>\n<p>Couchbase\u2019s auto-scaling feature monitors your cluster and automatically adjusts capacity to maintain <strong>steady and predictable performance,<\/strong> based on pre-defined thresholds for all Couchbase services. As a result, organizations provide a consistent experience to their users with no unexpected costs during peak times (which might occur with unchecked scaling or in the absence of auto-scaling).<\/p>\n<p>This auto-scaling feature of CAO is unique across the database industry. There is <em>no other database software<\/em> that provides auto-scaling per service which means with a predefined auto-scale policy, you can scale up or down the number of pods. Each pod may run a single Couchbase service or multiple Couchbase services as per your server configuration, providing true on-demand auto-scaling of Couchbase services, and <em>you only have to pay for what\u2019s required<\/em> at a point in time.<\/p>\n<p>You can set the auto-scaling policy with any Couchbase metric that fits your environment-specific needs. While we don\u2019t limit your auto-scaling capabilities attached to any specific metric, we came up with some recommendations for Couchbase\u2019s Data, Index, and Query services to assure uninterrupted service and consistent performance in all situations. The default <code>downScaling<\/code> operation can be stopped by explicitly disabling the <code>downScale<\/code> in the HPA config. (We highly recommend not to set the auto-<code>downScale<\/code> policy for critical applications in production environments.)<\/p>\n<p><a href=\"https:\/\/docs.couchbase.com\/operator\/current\/concept-couchbase-autoscaling.html?ref=blog\" target=\"_blank\" rel=\"noopener\">Read more here about auto-scaling Couchbase services<\/a>.<\/p>\n<h5>To quickly try it out for yourself, follow these tutorials:<\/h5>\n<ul>\n<li style=\"list-style-type: none\">\n<ul>\n<li><a href=\"https:\/\/docs.couchbase.com\/operator\/current\/tutorial-autoscale-query.html?ref=blog\" target=\"_blank\" rel=\"noopener\">Tutorial for auto-scaling Couchbase Query Service<\/a><\/li>\n<li><a href=\"https:\/\/docs.couchbase.com\/operator\/current\/tutorial-autoscale-data.html?ref=blog\" target=\"_blank\" rel=\"noopener\">Tutorial for auto-scaling Couchbase Data Service<\/a><\/li>\n<li><a href=\"https:\/\/docs.couchbase.com\/operator\/current\/tutorial-autoscale-index.html?ref=blog\" target=\"_blank\" rel=\"noopener\">Tutorial for auto-scaling Couchbase Index Service<\/a><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Online Expansion of Persistent Volumes<\/h3>\n<p>When you scale services, you also need to scale your storage. But sometimes you only need to scale storage without scaling the database services or changing the cluster size.<\/p>\n<p>Online expansion of persistent volumes in CAO 2.2 allows you to infinitely scale up your storage with zero downtime meaning you don\u2019t have to restart the pods with Kubernetes\u2019 new feature of dynamic PVC resizing. This is more cost-effective for you and your organization. You can keep PVC to the minimum size necessary to operate at the start and expand in the future as per your requirements.<\/p>\n<p>In CAO 2.2, the <code>enableOnlineVolumeExpansion<\/code> flag is added. This defaults to false and must be explicitly set to true as follows within the <code>CouchbaseCluster<\/code> spec to enable the Online Storage Scaling feature:<\/p>\n<pre class=\"lang:yaml decode:true\">kind: CouchbaseCluster\r\n\r\nmetadata:\r\n\r\n  name: cb-example\r\n\r\nspec:\r\n\r\n  image: couchbase\/server:6.6.1\r\n\r\n  enableOnlineVolumeExpansion: true\r\n\r\n  ...<\/pre>\n<p>In this feature, CAO only supports scaling up the storage, it does not support scaling down the storage because of Kubernetes limitations.<\/p>\n<p>To use this capability, you must configure the underlying StorageClass associated with backup volume to allow volume expansion.<\/p>\n<p><a href=\"https:\/\/docs.couchbase.com\/operator\/current\/howto-persistent-volumes.html?ref=blog#online-volume-expansion\" target=\"_blank\" rel=\"noopener\">Read more about Online PVC Scaling<\/a>. To quickly try it out, <a href=\"https:\/\/docs.couchbase.com\/operator\/current\/tutorial-volume-expansion.html?ref=blog\" target=\"_blank\" rel=\"noopener\">follow the tutorial here<\/a>.<\/p>\n<h3>Log Forwarding and Audit Log Management<\/h3>\n<p>CAO 2.2 supports <a href=\"https:\/\/docs.couchbase.com\/operator\/current\/concept-couchbase-logging.html?ref=blog#log-forwarding\" target=\"_blank\" rel=\"noopener\">log forwarding<\/a> through the optional deployment of a third-party log processor.<\/p>\n<p>The log processor runs in a sidecar container on each Couchbase pod, which then reads the log files and forwards them to standard console output. For this purpose, Couchbase supplies a default <a href=\"https:\/\/hub.docker.com\/r\/couchbase\/fluent-bit\" target=\"_blank\" rel=\"noopener\">log processor image<\/a> based on <a href=\"https:\/\/fluentbit.io\/\" target=\"_blank\" rel=\"noopener\">Fluent Bit<\/a>.<\/p>\n<p>In addition, audit logging can now be configured via the <a href=\"https:\/\/docs.couchbase.com\/operator\/current\/resource\/couchbasecluster.html?ref=blog\" target=\"_blank\" rel=\"noopener\">CouchbaseCluster<\/a> resource specification, thus allowing for <a href=\"https:\/\/docs.couchbase.com\/operator\/current\/howto-manage-couchbase-logging.html?ref=blog#configuring-audit-logging\" target=\"_blank\" rel=\"noopener\">automated audit logging<\/a> via the CAO.<\/p>\n<p><a href=\"https:\/\/docs.couchbase.com\/operator\/current\/howto-manage-couchbase-logging.html?ref=blog\" target=\"_blank\" rel=\"noopener\">Read more here about Log Forwarding and Audit Log Management<\/a>. To quickly try it out, <a href=\"https:\/\/docs.couchbase.com\/operator\/current\/tutorial-couchbase-log-forwarding.html?ref=blog\" target=\"_blank\" rel=\"noopener\">follow the tutorial here<\/a>.<\/p>\n<h3>Improved XDCR Connection Support<\/h3>\n<p>CAO 2.2 introduces the ability to modify remote cluster identification and authentication settings. This provides the ability to rotate passwords and certificates on the remote cluster, or even replace the remote cluster entirely.<\/p>\n<p><a href=\"https:\/\/docs.couchbase.com\/operator\/current\/release-notes.html?ref=blog#improved-xdcr-connection-support\" target=\"_blank\" rel=\"noopener\">Read more about Improved XDCR Connection Support here<\/a>.<\/p>\n<h3>Improved Server Group Support<\/h3>\n<p>In this release, we have lifted Server Group immutability restrictions.<\/p>\n<p>Couchbase Server groups and CAO pod scheduling settings can be modified while a cluster is running. This release also allows you to modify availability zones while a cluster is running. All server group migration operations use a shortest-path algorithm in order to minimize disruption.<\/p>\n<p><a href=\"https:\/\/docs.couchbase.com\/operator\/current\/release-notes.html?ref=blog#improved-server-group-support\" target=\"_blank\" rel=\"noopener\">Read more here about Server-Group settings<\/a>.<\/p>\n<h3>Improved Security Defaults<\/h3>\n<p>CAO 2.2 makes TLS 1.2 the minimum required version by default, and will automatically update the TLS minimum version unless it is explicitly specified with the <a href=\"https:\/\/docs.couchbase.com\/operator\/current\/resource\/couchbasecluster.html?ref=blog#couchbaseclusters-spec-networking-tls-tlsminimumversion\" target=\"_blank\" rel=\"noopener\"><code>couchbaseclusters.spec.networking.tls.tlsMinimumVersion<\/code><\/a> parameter. It also allows you to set <a href=\"https:\/\/docs.couchbase.com\/operator\/current\/resource\/couchbasecluster.html?ref=blog#couchbaseclusters-spec-networking-tls-tlsminimumversion\" target=\"_blank\" rel=\"noopener\"><code>couchbaseclusters.spec.networking.tls.tlsMinimumVersion<\/code><\/a> to TLS 1.0 after upgrading the CRDs and before restarting the Operator.<\/p>\n<p><a href=\"https:\/\/docs.couchbase.com\/operator\/current\/resource\/couchbasecluster.html?ref=blog#couchbaseclusters-spec-networking-tls-tlsminimumversion\" target=\"_blank\" rel=\"noopener\">Read more here about Security Settings and Defaults<\/a>.<\/p>\n<h3>TLS Certificate and Key Handling<\/h3>\n<p>CAO 2.2 provides secret shadowing to support the widely used format for TLS resources such as <code>tls.key<\/code> and <code>tls.crt<\/code> to provide integration with third-party providers and to maintain backward compatibility with Couchbase Server\u2019s required format for the TLS resources to be called as <code>pkey.key<\/code> and <code>chain.pem<\/code>. As the secret is shadowed, the Operator can reformat private keys, and therefore now supports PKCS #8 formatted private keys.<\/p>\n<p>Refer to the tutorial <a href=\"https:\/\/docs.couchbase.com\/operator\/current\/tutorial-cert-manager.html?ref=blog\" target=\"_blank\" rel=\"noopener\">Using a Certificate Manager<\/a> for an example.<\/p>\n<p>For existing clusters using the legacy <a href=\"https:\/\/docs.couchbase.com\/operator\/current\/resource\/couchbasecluster.html?ref=blog#couchbaseclusters-spec-networking-tls-static\" target=\"_blank\" rel=\"noopener\"><code>couchbaseclusters.spec.networking.tls.static<\/code><\/a> source, the Operator works as before: directly mounting and consuming the TLS secret without a shadow secret.<\/p>\n<p><a href=\"https:\/\/docs.couchbase.com\/operator\/current\/resource\/couchbasecluster.html?ref=blog#couchbaseclusters-spec-networking-tls-secretsource\" target=\"_blank\" rel=\"noopener\">Read more here about TLS Certificate and Key Handling<\/a>.<\/p>\n<h3>Automatic Resource Allocation<\/h3>\n<p>Kubernetes allows pods to reserve and limit compute resources. Resource reservation provides Kubernetes with the ability to fairly schedule pods so that they don\u2019t compete for CPU and memory.<\/p>\n<p>CAO 2.2 now provides the ability to automatically manage pod CPU and memory resource requests with the <code>couchbaseclusters.spec.autoResourceAllocation<\/code> field. When in use, pods will have their resource requests automatically populated depending on the services enabled on that pod, and the individual Couchbase service quotas.<\/p>\n<p>Updating quotas will cause the cluster to upgrade as it requests to update pod resources. We have introduced a new dummy memory quota for the query service to allow the management of memory resource requests, even though Couchbase itself does not provide the ability to constrain this service.<\/p>\n<p><a href=\"https:\/\/docs.couchbase.com\/operator\/current\/resource\/couchbasecluster.html?ref=blog#couchbaseclusters-spec-autoresourceallocation\" target=\"_blank\" rel=\"noopener\">Read more here about Automatic Resource Allocation<\/a>.<\/p>\n<h3>Improved Upgrade Behavior<\/h3>\n<p>In CAO 2.1, we introduced two types of upgrades: a one-pod-at-a-time <em>rolling upgrade<\/em>, and a <em>one-shot upgrade<\/em>.<\/p>\n<p>CAO 2.2 allows rolling upgrades where you can upgrade either a fixed number of pods or a percentage of the cluster size. You can set both values. It will consider both values and will select the one which will result in the fewest number of pods to upgrade at a time.<\/p>\n<p>Rolling upgrades can be configured with the <a href=\"https:\/\/docs.couchbase.com\/operator\/current\/resource\/couchbasecluster.html?ref=blog#couchbaseclusters-spec-rollingupgrade\" target=\"_blank\" rel=\"noopener\"><code>couchbaseclusters.spec.rollingUpgrade<\/code><\/a> parameter.<\/p>\n<p><a href=\"https:\/\/docs.couchbase.com\/operator\/current\/resource\/couchbasecluster.html?ref=blog#couchbaseclusters-spec-rollingupgrade-maxupgradable\" target=\"_blank\" rel=\"noopener\">Read more here about upgrades<\/a>.<\/p>\n<h3>Online Backup Volume Resizing<\/h3>\n<p>CAO 2.2 supports the online resizing of backup volumes. Backup volumes can be resized in one of two ways:<\/p>\n<ol>\n<li>Backup volumes can be <em><a href=\"https:\/\/docs.couchbase.com\/operator\/current\/howto-backup.html?ref=blog#manual-backup-volume-resizing\" target=\"_blank\" rel=\"noopener\">manually resized<\/a><\/em> by directly editing the <a href=\"https:\/\/docs.couchbase.com\/operator\/current\/resource\/couchbasebackup.html?ref=blog#couchbasebackups-spec-size\" target=\"_blank\" rel=\"noopener\"><code>couchbasebackups.spec.size<\/code><\/a> field.<\/li>\n<li>Backup volumes can be <em><a href=\"https:\/\/docs.couchbase.com\/operator\/current\/howto-backup.html?ref=blog#manual-backup-volume-resizing\" target=\"_blank\" rel=\"noopener\">automatically resized<\/a><\/em> by CAO. In this mode of operation, the <a href=\"https:\/\/docs.couchbase.com\/operator\/current\/resource\/couchbasebackup.html?ref=blog#couchbasebackups-spec-autoscaling\" target=\"_blank\" rel=\"noopener\"><code>couchbasebackups.spec.autoScaling<\/code><\/a> field controls the behavior.<\/li>\n<\/ol>\n<p>This is cost-effective for you and your organization. You can keep backups to the minimum size necessary to operate and expand in the future as per your requirements.<\/p>\n<p>To use these resizing capabilities, you must configure the underlying <code>StorageClass<\/code> associated with backup volume to allow volume expansion.<\/p>\n<p><a href=\"https:\/\/docs.couchbase.com\/operator\/current\/howto-backup.html?ref=blog#online-backup-volume-resizing\" target=\"_blank\" rel=\"noopener\">Read more here about Online Backup-Volume Resizing<\/a>.<\/p>\n<h3>Improved Backup and Restore<\/h3>\n<p>To mitigate performance issues, in CAO 2.2, <a href=\"https:\/\/docs.couchbase.com\/operator\/current\/resource\/couchbasebackup.html?ref=blog#couchbasebackups-spec-threads\" target=\"_blank\" rel=\"noopener\"><code>couchbasebackups.spec.threads<\/code><\/a> and <a href=\"https:\/\/docs.couchbase.com\/operator\/current\/resource\/couchbasebackuprestore.html?ref=blog#couchbasebackuprestores-spec-threads\" target=\"_blank\" rel=\"noopener\"><code>couchbasebackuprestores.spec.threads<\/code><\/a> can now be specified to configure the number of concurrent <code>cbbackupmgr<\/code> clients to use when backing up or restoring data.<\/p>\n<p>It also introduces filters that allow you to control exactly what you want to restore from a backup. Now you can choose to include or exclude specific buckets, restore data for a particular service, and even restore to a different bucket name when restoring documents. Refer to <a href=\"https:\/\/docs.couchbase.com\/operator\/current\/howto-backup.html?ref=blog#additional-restore-options\" target=\"_blank\" rel=\"noopener\">Additional Restore Options<\/a> for more information. This release requires you to upgrade your backup image to at least <code>couchbase\/operator-backup:1.1.0<\/code>.<\/p>\n<p><a href=\"https:\/\/docs.couchbase.com\/operator\/current\/howto-backup.html?ref=blog\" target=\"_blank\" rel=\"noopener\">Read more here about Backup and Restore<\/a>.<\/p>\n<h3>Couchbase Service Broker (CSB) improvements<\/h3>\n<p>In the last release (CAO 2.1), we introduced Couchbase Service Broker (CSB).It&#8217;s a cloud-native integration of CAO with the Open Service Broker API. In this release of CAO 2.2, we provide a tool called <a href=\"https:\/\/docs.couchbase.com\/service-broker\/current\/reference\/tools\/cbsbctl.html?ref=blog\" target=\"_blank\" rel=\"noopener\"><code>cbsbctl<\/code><\/a> to simplify the CSB deployment process and save time with minimum installation steps. We have also introduced the new service class and service plans specific to the CAO version.<\/p>\n<p><a href=\"https:\/\/docs.couchbase.com\/service-broker\/current\/index.html?ref=blog\" target=\"_blank\" rel=\"noopener\">Read more about using Couchbase Service Broker here<\/a>.<\/p>\n<h3>Customizable Prometheus Metrics<\/h3>\n<p>This version of the Couchbase Prometheus Exporter allows for certain customizations to exported metrics. Currently, it supports the following customizations:<\/p>\n<ul>\n<li style=\"list-style-type: none\">\n<ul>\n<li>Change the namespace, subsystem, name, and help text for each metric.<\/li>\n<li>Enable and disable exporting metrics to Prometheus.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/docs.couchbase.com\/operator\/current\/howto-prometheus.html?ref=blog#customizing-metrics\" target=\"_blank\" rel=\"noopener\">Read more here about customizing Couchbase Prometheus Exporter<\/a>.<\/p>\n<h3>Improvements for Couchbase Helm Charts<\/h3>\n<p>With the CAO 2.2 release, Couchbase Helm Charts support creating and updating all resource types. This release has also improved the Helm Chart documentation.<\/p>\n<p><a href=\"https:\/\/docs.couchbase.com\/operator\/current\/helm-couchbase-config.html?ref=blog#table-helm-chart-values\" target=\"_blank\" rel=\"noopener\">Read more here about Helm improvements<\/a>.<\/p>\n<h3>Important Links<\/h3>\n<ul>\n<li style=\"list-style-type: none\">\n<ul>\n<li>Documentation: <a href=\"https:\/\/docs.couchbase.com\/cloud-native-database\/index.html?ref=blog\" target=\"_blank\" rel=\"noopener\">Cloud-Native Database Stack<\/a><\/li>\n<li>Documentation: <a href=\"https:\/\/docs.couchbase.com\/operator\/current\/overview.html?ref=blog\" target=\"_blank\" rel=\"noopener\">Couchbase Autonomous Operator (CAO)<\/a><\/li>\n<li>Release Notes: <a href=\"https:\/\/docs.couchbase.com\/operator\/current\/release-notes.html?ref=blog\" target=\"_blank\" rel=\"noopener\">Couchbase Autonomous Operator 2.2<\/a><\/li>\n<li>Download CAO 2.2 Now: <a href=\"https:\/\/www.couchbase.com\/downloads?family=open-source-kubernetes\">Couchbase Autonomous Operator Download<\/a><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Today we are announcing the General Availability of Couchbase Autonomous Operator for Kubernetes (CAO) Version 2.2. This release provides an automated cloud-native database experience with exciting new features and improvements, such as: Auto-scaling Couchbase services Online storage scaling (scale up [&hellip;]<\/p>\n","protected":false},"author":73234,"featured_media":2547,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[9284,2225,1816,6319,2322,2334,1813,2389],"tags":[9243,9239,1545],"ppma_author":[8932],"class_list":["post-11263","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-couchbase-autonomous-operator","category-cloud","category-couchbase-server","category-customers","category-kubernetes","category-monitoring","category-security","category-solutions","tag-cloud-native-database","tag-fluent-bit","tag-kubernetes"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.9 (Yoast SEO 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