{"id":56510,"date":"2016-05-23T19:00:29","date_gmt":"2016-05-23T16:00:29","guid":{"rendered":"https:\/\/www.javacodegeeks.com\/?p=56510"},"modified":"2016-05-22T12:15:05","modified_gmt":"2016-05-22T09:15:05","slug":"scaling-rebalancing-couchbase-cluster-using-cli","status":"publish","type":"post","link":"https:\/\/www.javacodegeeks.com\/2016\/05\/scaling-rebalancing-couchbase-cluster-using-cli.html","title":{"rendered":"Scaling and Rebalancing a Couchbase Cluster using CLI"},"content":{"rendered":"<p><a href=\"http:\/\/developer.couchbase.com\">Couchbase<\/a> provides <a href=\"http:\/\/developer.couchbase.com\/documentation\/server\/4.1\/ha-dr\/ha-dr-intro.html\">high availability and disaster recovery<\/a>\u00a0in several ways:<\/p>\n<ul>\n<li>Homogenous cluster<\/li>\n<li><a href=\"http:\/\/developer.couchbase.com\/documentation\/server\/4.1\/architecture\/high-availability-replication-architecture.html\">Replication<\/a>\n<ul>\n<li><a href=\"http:\/\/developer.couchbase.com\/documentation\/server\/current\/architecture\/intra-cluster-replication.html\">Intra-cluster replication<\/a><\/li>\n<li><a href=\"http:\/\/developer.couchbase.com\/documentation\/server\/4.1\/xdcr\/xdcr-intro.html\">Cross-data center replication (XDCR)<\/a><\/li>\n<\/ul>\n<\/li>\n<li><a href=\"http:\/\/developer.couchbase.com\/documentation\/server\/current\/backup-restore\/backup-restore.html\">Backup and restore<\/a><\/li>\n<li><a href=\"http:\/\/docs.couchbase.com\/admin\/admin\/Concepts\/concept-rack-awareness.html\">Rack zone awareness<\/a><\/li>\n<\/ul>\n<p>This blog will show how to create a Couchbase cluster using Couchbase Command Line Interface (CLI). In addition, these steps can also be performed using the <a href=\"http:\/\/developer.couchbase.com\/documentation\/server\/current\/rest-api\/rest-endpoints-all.html\">Couchbase REST API<\/a> and the\u00a0<a href=\"http:\/\/developer.couchbase.com\/documentation\/server\/current\/admin\/ui-intro.html\">Couchbase Web Console<\/a>.<\/p>\n<p><a href=\"http:\/\/www.javacodegeeks.com\/wp-content\/uploads\/2016\/05\/couchbase-cluster-amazon-1024x265.png\"><img decoding=\"async\" class=\"aligncenter wp-image-56529 size-large\" src=\"http:\/\/www.javacodegeeks.com\/wp-content\/uploads\/2016\/05\/couchbase-cluster-amazon-1024x265-1024x265.png\" alt=\"couchbase-cluster-amazon-1024x265\" width=\"620\" height=\"160\" srcset=\"https:\/\/www.javacodegeeks.com\/wp-content\/uploads\/2016\/05\/couchbase-cluster-amazon-1024x265.png 1024w, https:\/\/www.javacodegeeks.com\/wp-content\/uploads\/2016\/05\/couchbase-cluster-amazon-1024x265-300x78.png 300w, https:\/\/www.javacodegeeks.com\/wp-content\/uploads\/2016\/05\/couchbase-cluster-amazon-1024x265-768x199.png 768w\" sizes=\"(max-width: 620px) 100vw, 620px\" \/><\/a><\/p>\n<p>Couchbase nodes in a cluster are homogeneous. Applications can write to any node and read from any node.\u00a0There is no write-to-master and read-from-slave architecture that inherently gives you scalability problems.\u00a0This allows the Couchbase cluster to truly scale horizontally to meet your growing application demands.<div style=\"display:inline-block; margin: 15px 0;\"> <div id=\"adngin-JavaCodeGeeks_incontent_video-0\" style=\"display:inline-block;\"><\/div> <\/div><\/p>\n<p>Creating a Couchbase cluster involves the following steps:<\/p>\n<ul>\n<li><strong>Provision Couchbase<\/strong>:\u00a0Provision 1 or more\u00a0Couchbase nodes, say on Amazon Web Services<\/li>\n<li><strong>Initialize master<\/strong>: Initialize any node\u00a0to be the \u201cmaster\u201d of the cluster by calling <code>cluster-init<\/code> CLI command<\/li>\n<li><strong>Create cluster<\/strong>: For all other nodes, create a\u00a0cluster by\u00a0invoking the <code>server-add<\/code> CLI command<\/li>\n<li><strong>Rebalance cluster<\/strong>: Finally, rebalance the cluster by calling the <code>rebalance<\/code> CLI command<\/li>\n<\/ul>\n<h2>Provision Couchbase<\/h2>\n<p>Provision a Couchbase node on Amazon:<\/p>\n<pre class=\"brush:bash\">aws ec2 run-instances \\\r\n--image-id ami-db95ffbb \\\r\n--count 1 \\\r\n--instance-type m3.large \\\r\n--key-name my-couchbase-key \\\r\n--security-groups \"Couchbase Server Community Edition-4-0-0-AutogenByAWSMP-\"<\/pre>\n<p>Security group name is explained in <a href=\"http:\/\/blog.couchbase.com\/2016\/may\/couchbase-cluster-amazon-using-cli\">Couchbase Cluster on Amazon using CLI<\/a>.<\/p>\n<p>Let\u2019s call this node as\u00a0\u201cmaster\u201d.<\/p>\n<h2>Initialize Couchbase \u201cmaster\u201d<\/h2>\n<p>Configure the \u201cmaster\u201d instance and initialize the cluster:<\/p>\n<pre class=\"brush:bash\">export COUCHBASE_CLI=\/Users\/arungupta\/tools\/Couchbase-Server-4.0.app\/Contents\/Resources\/couchbase-core\/bin\/couchbase-cli\r\n$COUCHBASE_CLI \\\r\n        cluster-init \\\r\n        -c &lt;master-ip&gt;:8091 \\\r\n        -u Administrator \\\r\n        -p password \\\r\n        --cluster-username Administrator \\\r\n        --cluster-password password \\\r\n        --cluster-index-ramsize=300 \\\r\n        --cluster-ramsize=300 \\\r\n        --services=data,index,query<\/pre>\n<p>Create another instance, lets call it \u201cworker\u201d. Note, this is not a master\/slave architecture. Couchbase cluster is\u00a0homogenous where any node in the cluster can be \u201cmaster\u201d.<\/p>\n<h2>Create Couchbase Cluster<\/h2>\n<p>Add this newly created \u201cworker\u201d instance to the cluster:<\/p>\n<pre class=\"brush:bash\">$COUCHBASE_CLI \\\r\n    server-add \\\r\n    --cluster=&lt;master-ip&gt;:8091 \\\r\n    --user Administrator \\\r\n    --password password \\\r\n    --server-add=&lt;worker-ip&gt; \\\r\n    --server-add-username=Administrator \\\r\n    --server-add-password=password<\/pre>\n<p>Typically, you\u2019ll create and add multiple nodes to the cluster before rebalancing.<\/p>\n<h2>Rebalance Couchbase Cluster<\/h2>\n<p>Rebalance the cluster:<\/p>\n<pre class=\"brush:bash\">$COUCHBASE_CLI \\\r\nrebalance \\\r\n--cluster=&lt;master-ip&gt;:8091 \\\r\n--user Administrator \\\r\n--password password<\/pre>\n<p>Now, you can create as many instances and easy include them in the cluster.<\/p>\n<p>Adding a single node and rebalancing the cluster can be easily done as a single step:<\/p>\n<pre class=\"brush:bash\">$COUCHBASE_CLI \\\r\nrebalance \\\r\n--cluster=&lt;master-ip&gt;:8091 \\\r\n--user Administrator \\\r\n--password password\r\n--server-add=&lt;worker-ip&gt;\r\n--server-add-username=Administrator\r\n--server-add-password=password<\/pre>\n<p>Now, your cluster is accessible at http:\/\/&lt;master-ip&gt;:8091 or http:\/\/&lt;worker-ip&gt;:8091.<\/p>\n<p>Further references\u00a0\u2026<\/p>\n<ul>\n<li><a href=\"http:\/\/developer.couchbase.com\/server\">Couchbase Server Developer\u00a0Portal<\/a><\/li>\n<li><a href=\"http:\/\/developer.couchbase.com\/documentation\/server\/current\/sdks\/java-2.2\/hello-couchbase.html\">Hello Couchbase Example<\/a><\/li>\n<li><a href=\"http:\/\/developer.couchbase.com\/documentation\/server\/current\/cli\/cbcli-intro.html\">Couchbase CLI<\/a><\/li>\n<li>Questions on <a href=\"http:\/\/stackoverflow.com\/questions\/tagged\/couchbase\">StackOverflow,<\/a>\u00a0<a href=\"https:\/\/forums.couchbase.com\/\">Forums<\/a>\u00a0or <a href=\"http:\/\/couchbase-community.slack.com\/\">Slack Channel<\/a><\/li>\n<li>Follow us\u00a0<a href=\"http:\/\/twitter.com\/couchbasedev\">@couchbasedev<\/a><\/li>\n<li><a href=\"http:\/\/www.couchbase.com\/next\">Couchbase 4.5 Beta<\/a><\/li>\n<\/ul>\n<p>Enjoy!<\/p>\n<div class=\"attribution\">\n<table>\n<tbody>\n<tr>\n<td><span class=\"reference\">Reference: <\/span><\/td>\n<td><a href=\"http:\/\/blog.arungupta.me\/scale-rebalance-couchbase-cluster-cli\/\">Scaling and Rebalancing a Couchbase Cluster using CLI<\/a> from our <a href=\"http:\/\/www.javacodegeeks.com\/join-us\/jcg\/\">JCG partner<\/a> Arun Gupta at the <a href=\"http:\/\/blog.arungupta.me\/\">Miles to go 3.0 \u2026<\/a> blog.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Couchbase provides high availability and disaster recovery\u00a0in several ways: Homogenous cluster Replication Intra-cluster replication Cross-data center replication (XDCR) Backup and restore Rack zone awareness This blog will show how to create a Couchbase cluster using Couchbase Command Line Interface (CLI). In addition, these steps can also be performed using the Couchbase REST API and the\u00a0Couchbase &hellip;<\/p>\n","protected":false},"author":598,"featured_media":98,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[584],"class_list":["post-56510","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-enterprise-java","tag-couchbase"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Scaling and Rebalancing a Couchbase Cluster using CLI - Java Code Geeks<\/title>\n<meta name=\"description\" content=\"Couchbase provides high availability and disaster recovery\u00a0in several ways: Homogenous cluster Replication Intra-cluster replication Cross-data center\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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