{"id":111825,"date":"2021-03-08T11:43:39","date_gmt":"2021-03-08T06:13:39","guid":{"rendered":"https:\/\/www.vskills.in\/certification\/tutorial\/?page_id=111825"},"modified":"2024-04-12T14:31:37","modified_gmt":"2024-04-12T09:01:37","slug":"remove-members-from-replica-set","status":"publish","type":"page","link":"https:\/\/www.vskills.in\/certification\/tutorial\/remove-members-from-replica-set\/","title":{"rendered":"Remove Members from Replica Set"},"content":{"rendered":"\n<h4 class=\"wp-block-heading\"><strong>Remove Members from Replica Set<\/strong><\/h4>\n\n\n\n<p>To remove a member of a replica set use either of the following procedures.<\/p>\n\n\n\n<p><strong>&nbsp;Remove a Member Using rs.remove()<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Shut down the mongod instance for the member you wish to remove. To shut down the instance, connect using the mongo shell and the db.shutdownServer() method.<\/li>\n\n\n\n<li>Connect to the replica set\u2019s current primary. To determine the current primary, use db.isMaster() while connected to any member of the replica set.<\/li>\n\n\n\n<li>Use rs.remove() in either of the following forms to remove the member:<\/li>\n<\/ul>\n\n\n\n<p>rs.remove(&#8220;mongod3.example.net:27017&#8221;)<\/p>\n\n\n\n<p>rs.remove(&#8220;mongod3.example.net&#8221;)<\/p>\n\n\n\n<p>MongoDB disconnects the shell briefly as the replica set elects a new primary. The shell then automatically reconnects. The shell displays a DBClientCursor::init call() failed error even though the command succeeds.<\/p>\n\n\n\n<p><strong>Remove a Member Using rs.reconfig()<\/strong><\/p>\n\n\n\n<p>To remove a member you can manually edit the replica set configuration document, as described here.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Shut down the mongod instance for the member you wish to remove. To shut down the instance, connect using the mongo shell and the db.shutdownServer() method.<\/li>\n\n\n\n<li>Connect to the replica set\u2019s current primary. To determine the current primary, use db.isMaster() while connected to any member of the replica set.<\/li>\n\n\n\n<li>Issue the rs.conf() method to view the current configuration document and determine the position in the members array of the member to remove:<\/li>\n<\/ul>\n\n\n\n<p>As an example, mongod_C.example.net is in position 2 of the following configuration file:<\/p>\n\n\n\n<p>{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &#8220;_id&#8221; : &#8220;rs&#8221;,<\/p>\n\n\n\n<p>&#8220;version&#8221; : 7,<\/p>\n\n\n\n<p>&#8220;members&#8221; : [<\/p>\n\n\n\n<p>{<\/p>\n\n\n\n<p>&#8220;_id&#8221; : 0,<\/p>\n\n\n\n<p>&#8220;host&#8221; : &#8220;mongod_A.example.net:27017&#8221;<\/p>\n\n\n\n<p>},<\/p>\n\n\n\n<p>{<\/p>\n\n\n\n<p>&#8220;_id&#8221; : 1,<\/p>\n\n\n\n<p>&#8220;host&#8221; : &#8220;mongod_B.example.net:27017&#8221;<\/p>\n\n\n\n<p>},<\/p>\n\n\n\n<p>{<\/p>\n\n\n\n<p>&#8220;_id&#8221; : 2,<\/p>\n\n\n\n<p>&#8220;host&#8221; : &#8220;mongod_C.example.net:27017&#8221;<\/p>\n\n\n\n<p>}<\/p>\n\n\n\n<p>]\n\n\n\n<p>}<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Assign the current configuration document to the variable cfg: cfg = rs.conf()<\/li>\n\n\n\n<li>Modify the cfg object to remove the member. As an example to remove mongod_C.example.net:27017 use the following JavaScript operation: cfg.members.splice(2,1)<\/li>\n\n\n\n<li>Overwrite the replica set configuration document with the new configuration by issuing the following: reconfig(cfg). As a result of rs.reconfig() the shell will disconnect while the replica set renegotiates which member is primary. The shell displays a DBClientCursor::init call() failed error even though the command succeeds, and will automatically reconnected.<\/li>\n\n\n\n<li>To confirm the new configuration, issue rs.conf(). For the example above the output would be:<\/li>\n<\/ul>\n\n\n\n<p>{<\/p>\n\n\n\n<p>&#8220;_id&#8221; : &#8220;rs&#8221;,<\/p>\n\n\n\n<p>&#8220;version&#8221; : 8,<\/p>\n\n\n\n<p>&#8220;members&#8221; : [<\/p>\n\n\n\n<p>{&nbsp;&nbsp; &#8220;_id&#8221; : 0,<\/p>\n\n\n\n<p>&#8220;host&#8221; : &#8220;mongod_A.example.net:27017&#8221;<\/p>\n\n\n\n<p>},<\/p>\n\n\n\n<p>{&nbsp; &#8220;_id&#8221; : 1,<\/p>\n\n\n\n<p>&#8220;host&#8221; : &#8220;mongod_B.example.net:27017&#8221;<\/p>\n\n\n\n<p>}<\/p>\n\n\n\n<p>]\n\n\n\n<p>}<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Apply for MongoDB Certification Now!!<\/h3>\n\n\n\n<p><a href=\"https:\/\/www.vskills.in\/certification\/databases\/mongodb-server-administrator\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.vskills.in\/certification\/databases\/mongodb-server-administrator<\/a><\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><a href=\"https:\/\/www.vskills.in\/certification\/tutorial\/certified-mongodb-professional\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Back to Tutorial<\/strong><\/a><\/h4>\n","protected":false},"excerpt":{"rendered":"<p>Remove Members from Replica Set To remove a member of a replica set use either of the following procedures. &nbsp;Remove a Member Using rs.remove() rs.remove(&#8220;mongod3.example.net:27017&#8221;) rs.remove(&#8220;mongod3.example.net&#8221;) MongoDB disconnects the shell briefly as the replica set elects a new primary. The shell then automatically reconnects. The shell displays a DBClientCursor::init call() failed error even though the&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"categories":[73],"tags":[],"class_list":["post-111825","page","type-page","status-publish","hentry","category-mongodb"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Remove Members from Replica Set - Tutorial<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.vskills.in\/certification\/tutorial\/remove-members-from-replica-set\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Remove Members from Replica Set - Tutorial\" \/>\n<meta property=\"og:description\" content=\"Remove Members from Replica Set To remove a member of a replica set use either of the following procedures. &nbsp;Remove a Member Using rs.remove() rs.remove(&#8220;mongod3.example.net:27017&#8221;) rs.remove(&#8220;mongod3.example.net&#8221;) MongoDB disconnects the shell briefly as the replica set elects a new primary. 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