| "use strict";(self.webpackChunksite_3=self.webpackChunksite_3||[]).push([[9694],{3905:function(e,o,n){n.d(o,{Zo:function(){return m},kt:function(){return k}});var t=n(67294);function i(e,o,n){return o in e?Object.defineProperty(e,o,{value:n,enumerable:!0,configurable:!0,writable:!0}):e[o]=n,e}function r(e,o){var n=Object.keys(e);if(Object.getOwnPropertySymbols){var t=Object.getOwnPropertySymbols(e);o&&(t=t.filter((function(o){return Object.getOwnPropertyDescriptor(e,o).enumerable}))),n.push.apply(n,t)}return n}function s(e){for(var o=1;o<arguments.length;o++){var n=null!=arguments[o]?arguments[o]:{};o%2?r(Object(n),!0).forEach((function(o){i(e,o,n[o])})):Object.getOwnPropertyDescriptors?Object.defineProperties(e,Object.getOwnPropertyDescriptors(n)):r(Object(n)).forEach((function(o){Object.defineProperty(e,o,Object.getOwnPropertyDescriptor(n,o))}))}return e}function a(e,o){if(null==e)return{};var n,t,i=function(e,o){if(null==e)return{};var 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the",source:"@site/versioned_docs/version-4.17.0/admin/decomission.md",sourceDirName:"admin",slug:"/admin/decomission",permalink:"/docs/admin/decomission",draft:!1,tags:[],version:"4.17.0",frontMatter:{id:"decomission",title:"Decommission Bookies"},sidebar:"docsSidebar",previous:{title:"BookKeeper Admin REST API",permalink:"/docs/admin/http"},next:{title:"BookKeeper API",permalink:"/docs/api/overview"}},l={},c=[{value:"Before we decommission",id:"before-we-decommission",level:3},{value:"Process of Decommissioning",id:"process-of-decommissioning",level:3}],m={toc:c},p="wrapper";function d(e){let{components:o,...n}=e;return(0,i.kt)(p,(0,t.Z)({},m,n,{components:o,mdxType:"MDXLayout"}),(0,i.kt)("p",null,"In case the user wants to decommission a bookie, the following process is useful to follow in order to verify if the\ndecommissioning was safely done."),(0,i.kt)("h3",{id:"before-we-decommission"},"Before we decommission"),(0,i.kt)("ol",null,(0,i.kt)("li",{parentName:"ol"},(0,i.kt)("p",{parentName:"li"},"Ensure state of your cluster can support the decommissioning of the target bookie.\nCheck if ",(0,i.kt)("inlineCode",{parentName:"p"},"EnsembleSize >= Write Quorum >= Ack Quorum")," stays true with one less bookie")),(0,i.kt)("li",{parentName:"ol"},(0,i.kt)("p",{parentName:"li"},"Ensure target bookie shows up in the listbookies command.")),(0,i.kt)("li",{parentName:"ol"},(0,i.kt)("p",{parentName:"li"},"Ensure that there is no other process ongoing (upgrade etc)."))),(0,i.kt)("h3",{id:"process-of-decommissioning"},"Process of Decommissioning"),(0,i.kt)("ol",null,(0,i.kt)("li",{parentName:"ol"},"Log on to the bookie node, check if there are underreplicated ledgers.")),(0,i.kt)("p",null,"If there are, the decommission command will force them to be replicated.\n",(0,i.kt)("inlineCode",{parentName:"p"},"$ bin/bookkeeper shell listunderreplicated")),(0,i.kt)("ol",{start:2},(0,i.kt)("li",{parentName:"ol"},(0,i.kt)("p",{parentName:"li"},"Stop the bookie\n",(0,i.kt)("inlineCode",{parentName:"p"},"$ bin/bookkeeper-daemon.sh stop bookie"))),(0,i.kt)("li",{parentName:"ol"},(0,i.kt)("p",{parentName:"li"},"Run the decommission command.\nIf you have logged onto the node you wish to decommission, you don't need to provide ",(0,i.kt)("inlineCode",{parentName:"p"},"-bookieid"),"\nIf you are running the decommission command for target bookie node from another bookie node you should mention\nthe target bookie id in the arguments for ",(0,i.kt)("inlineCode",{parentName:"p"},"-bookieid"),"\n",(0,i.kt)("inlineCode",{parentName:"p"},"$ bin/bookkeeper shell decommissionbookie"),"\nor\n",(0,i.kt)("inlineCode",{parentName:"p"},"$ bin/bookkeeper shell decommissionbookie -bookieid <target bookieid>"))),(0,i.kt)("li",{parentName:"ol"},(0,i.kt)("p",{parentName:"li"},"Validate that there are no ledgers on decommissioned bookie\n",(0,i.kt)("inlineCode",{parentName:"p"},"$ bin/bookkeeper shell listledgers -bookieid <target bookieid>")))),(0,i.kt)("p",null,"Last step to verify is you could run this command to check if the bookie you decommissioned doesn\u2019t show up in list bookies:"),(0,i.kt)("pre",null,(0,i.kt)("code",{parentName:"pre",className:"language-bash"},"$ bin/bookkeeper shell listbookies -rw -h\n$ bin/bookkeeper shell listbookies -ro -h\n")))}d.isMDXComponent=!0}}]); |