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tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>BookKeeper administration</h1></header><p>This document is a guide to deploying, administering, and maintaining BookKeeper. It also discusses best practices and common problems.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="requirements">Requirements<a href="#requirements" class="hash-link" aria-label="Direct link to Requirements" title="Direct link to Requirements"></a></h2><p>A typical BookKeeper installation consists of an ensemble of bookies and a ZooKeeper quorum. The exact number of bookies depends on the quorum mode that you choose, desired throughput, and the number of clients using the installation simultaneously.</p><p>The minimum number of bookies depends on the type of installation:</p><ul><li>For <em>self-verifying</em> entries you should run at least three bookies. In this mode, clients store a message authentication code along with each entry.</li><li>For <em>generic</em> entries you should run at least four</li></ul><p>There is no upper limit on the number of bookies that you can run in a single ensemble.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a href="#performance" class="hash-link" aria-label="Direct link to Performance" title="Direct link to Performance"></a></h3><p>To achieve optimal performance, BookKeeper requires each server to have at least two disks. It's possible to run a bookie with a single disk but performance will be significantly degraded.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="zookeeper">ZooKeeper<a href="#zookeeper" class="hash-link" aria-label="Direct link to ZooKeeper" title="Direct link to ZooKeeper"></a></h3><p>There is no constraint on the number of ZooKeeper nodes you can run with BookKeeper. A single machine running ZooKeeper in <a href="https://zookeeper.apache.org/doc/current/zookeeperStarted.html#sc_InstallingSingleMode" target="_blank" rel="noopener noreferrer">standalone mode</a> is sufficient for BookKeeper, although for the sake of higher resilience we recommend running ZooKeeper in <a href="https://zookeeper.apache.org/doc/current/zookeeperStarted.html#sc_RunningReplicatedZooKeeper" target="_blank" rel="noopener noreferrer">quorum mode</a> with multiple servers.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="starting-and-stopping-bookies">Starting and stopping bookies<a href="#starting-and-stopping-bookies" class="hash-link" aria-label="Direct link to Starting and stopping bookies" title="Direct link to Starting and stopping bookies"></a></h2><p>You can run bookies either in the foreground or in the background, using <a href="https://en.wikipedia.org/wiki/Nohup" target="_blank" rel="noopener noreferrer">nohup</a>. You can also run <a href="#local-bookie">local bookies</a> for development purposes.</p><p>To start a bookie in the foreground, use the <a href="/docs/4.9.2/reference/cli#bookkeeper-bookie"><code>bookie</code></a> command of the <a href="/docs/4.9.2/reference/cli#bookkeeper"><code>bookkeeper</code></a> CLI tool:</p><div class="language-shell codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-shell codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ bookkeeper-server/bin/bookkeeper bookie</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>To start a bookie in the background, use the <a href="/docs/4.9.2/reference/cli#bookkeeper-daemon.sh"><code>bookkeeper-daemon.sh</code></a> script and run <code>start bookie</code>:</p><div class="language-shell codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-shell codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ bookkeeper-server/bin/bookkeeper-daemon.sh start bookie</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h3 class="anchor anchorWithStickyNavbar_LWe7" id="local-bookies">Local bookies<a href="#local-bookies" class="hash-link" aria-label="Direct link to Local bookies" title="Direct link to Local bookies"></a></h3><p>The instructions above showed you how to run bookies intended for production use. If you'd like to experiment with ensembles of bookies locally, you can use the <a href="/docs/4.9.2/reference/cli#bookkeeper-localbookie"><code>localbookie</code></a> command of the <code>bookkeeper</code> CLI tool and specify the number of bookies you'd like to run.</p><p>This would spin up a local ensemble of 6 bookies:</p><div class="language-shell codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-shell codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ bookkeeper-server/bin/bookkeeper localbookie </span><span class="token number" style="color:#36acaa">6</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><blockquote><p>When you run a local bookie ensemble, all bookies run in a single JVM process.</p></blockquote><h2 class="anchor anchorWithStickyNavbar_LWe7" id="configuring-bookies">Configuring bookies<a href="#configuring-bookies" class="hash-link" aria-label="Direct link to Configuring bookies" title="Direct link to Configuring bookies"></a></h2><p>There's a wide variety of parameters that you can set in the bookie configuration file in <code>bookkeeper-server/conf/bk_server.conf</code> of your <a href="/docs/4.9.2/reference/config">BookKeeper installation</a>. A full listing can be found in <a href="/docs/4.9.2/reference/config">Bookie configuration</a>.</p><p>Some of the more important parameters to be aware of:</p><table><thead><tr><th align="left">Parameter</th><th align="left">Description</th><th align="left">Default</th></tr></thead><tbody><tr><td align="left"><code>bookiePort</code></td><td align="left">The TCP port that the bookie listens on</td><td align="left"><code>3181</code></td></tr><tr><td align="left"><code>zkServers</code></td><td align="left">A comma-separated list of ZooKeeper servers in <code>hostname:port</code> format</td><td align="left"><code>localhost:2181</code></td></tr><tr><td align="left"><code>journalDirectory</code></td><td align="left">The directory where the <a href="/docs/4.9.2/getting-started/concepts#log-device">log device</a> stores the bookie's write-ahead log (WAL)</td><td align="left"><code>/tmp/bk-txn</code></td></tr><tr><td align="left"><code>ledgerDirectories</code></td><td align="left">The directories where the <a href="/docs/4.9.2/getting-started/concepts#ledger-device">ledger device</a> stores the bookie's ledger entries (as a comma-separated list)</td><td align="left"><code>/tmp/bk-data</code></td></tr></tbody></table><blockquote><p>Ideally, the directories specified <code>journalDirectory</code> and <code>ledgerDirectories</code> should be on difference devices.</p></blockquote><h2 class="anchor anchorWithStickyNavbar_LWe7" id="logging">Logging<a href="#logging" class="hash-link" aria-label="Direct link to Logging" title="Direct link to Logging"></a></h2><p>BookKeeper uses <a href="http://www.slf4j.org/" target="_blank" rel="noopener noreferrer">slf4j</a> for logging, with <a href="https://logging.apache.org/log4j/2.x/" target="_blank" rel="noopener noreferrer">log4j</a> bindings enabled by default.</p><p>To enable logging for a bookie, create a <code>log4j.properties</code> file and point the <code>BOOKIE_LOG_CONF</code> environment variable to the configuration file. Here's an example:</p><div class="language-shell codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-shell codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ </span><span class="token builtin class-name">export</span><span class="token plain"> </span><span class="token assign-left variable" style="color:#36acaa">BOOKIE_LOG_CONF</span><span class="token operator" style="color:#393A34">=</span><span class="token plain">/some/path/log4j.properties</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">$ bookkeeper-server/bin/bookkeeper bookie</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h2 class="anchor anchorWithStickyNavbar_LWe7" id="upgrading">Upgrading<a href="#upgrading" class="hash-link" aria-label="Direct link to Upgrading" title="Direct link to Upgrading"></a></h2><p>From time to time you may need to make changes to the filesystem layout of bookies---changes that are incompatible with previous versions of BookKeeper and require that directories used with previous versions are upgraded. If a filesystem upgrade is required when updating BookKeeper, the bookie will fail to start and return an error like this:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">2017-05-25 10:41:50,494 - ERROR - [main:Bookie@246] - Directory layout version is less than 3, upgrade needed</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>BookKeeper provides a utility for upgrading the filesystem. You can perform an upgrade using the <a href="/docs/4.9.2/reference/cli#bookkeeper-upgrade"><code>upgrade</code></a> command of the <code>bookkeeper</code> CLI tool. When running <code>bookkeeper upgrade</code> you need to specify one of three flags:</p><table><thead><tr><th align="left">Flag</th><th align="left">Action</th></tr></thead><tbody><tr><td align="left"><code>--upgrade</code></td><td align="left">Performs an upgrade</td></tr><tr><td align="left"><code>--rollback</code></td><td align="left">Performs a rollback to the initial filesystem version</td></tr><tr><td align="left"><code>--finalize</code></td><td align="left">Marks the upgrade as complete</td></tr></tbody></table><h3 class="anchor anchorWithStickyNavbar_LWe7" id="upgrade-pattern">Upgrade pattern<a href="#upgrade-pattern" class="hash-link" aria-label="Direct link to Upgrade pattern" title="Direct link to Upgrade pattern"></a></h3><p>A standard upgrade pattern is to run an upgrade...</p><div class="language-shell codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-shell codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ bookkeeper-server/bin/bookkeeper upgrade --upgrade</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>...then check that everything is working normally, then kill the bookie. If everything is okay, finalize the upgrade...</p><div class="language-shell codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-shell codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ bookkeeper-server/bin/bookkeeper upgrade --finalize</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>...and then restart the server:</p><div class="language-shell codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-shell codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ bookkeeper-server/bin/bookkeeper bookie</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If something has gone wrong, you can always perform a rollback:</p><div class="language-shell codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-shell codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ bookkeeper-server/bin/bookkeeper upgrade --rollback</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h2 class="anchor anchorWithStickyNavbar_LWe7" id="formatting">Formatting<a href="#formatting" class="hash-link" aria-label="Direct link to Formatting" title="Direct link to Formatting"></a></h2><p>You can format bookie metadata in ZooKeeper using the <a href="/docs/4.9.2/reference/cli#bookkeeper-shell-metaformat"><code>metaformat</code></a> command of the <a href="/docs/4.9.2/reference/cli#the-bookkeeper-shell">BookKeeper shell</a>.</p><p>By default, formatting is done in interactive mode, which prompts you to confirm the format operation if old data exists. You can disable confirmation using the <code>-nonInteractive</code> flag. If old data does exist, the format operation will abort <em>unless</em> you set the <code>-force</code> flag. Here's an example:</p><div class="language-shell codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-shell codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ bookkeeper-server/bin/bookkeeper shell metaformat</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>You can format the local filesystem data on a bookie using the <a href="/docs/4.9.2/reference/cli#bookkeeper-shell-bookieformat"><code>bookieformat</code></a> command on each bookie. Here's an example:</p><div class="language-shell codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-shell codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ bookkeeper-server/bin/bookkeeper shell bookieformat</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><blockquote><p>The <code>-force</code> and <code>-nonInteractive</code> flags are also available for the <code>bookieformat</code> command.</p></blockquote><h2 class="anchor anchorWithStickyNavbar_LWe7" id="autorecovery">AutoRecovery<a href="#autorecovery" class="hash-link" aria-label="Direct link to AutoRecovery" title="Direct link to AutoRecovery"></a></h2><p>For a guide to AutoRecovery in BookKeeper, see <a href="/docs/4.9.2/admin/autorecovery">this doc</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="missing-disks-or-directories">Missing disks or directories<a href="#missing-disks-or-directories" class="hash-link" aria-label="Direct link to Missing disks or directories" title="Direct link to Missing disks or directories"></a></h2><p>Accidentally replacing disks or removing directories can cause a bookie to fail while trying to read a ledger fragment that, according to the ledger metadata, exists on the bookie. For this reason, when a bookie is started for the first time, its disk configuration is fixed for the lifetime of that bookie. Any change to its disk configuration, such as a crashed disk or an accidental configuration change, will result in the bookie being unable to start. That will throw an error like this:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">2017-05-29 18:19:13,790 - ERROR - [main:BookieServer314] – Exception running bookie server : @</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">org.apache.bookkeeper.bookie.BookieException$InvalidCookieException</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">.......at org.apache.bookkeeper.bookie.Cookie.verify(Cookie.java:82)</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">.......at org.apache.bookkeeper.bookie.Bookie.checkEnvironment(Bookie.java:275)</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">.......at org.apache.bookkeeper.bookie.Bookie.<init>(Bookie.java:351)</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>If the change was the result of an accidental configuration change, the change can be reverted and the bookie can be restarted. However, if the change <em>cannot</em> be reverted, such as is the case when you want to add a new disk or replace a disk, the bookie must be wiped and then all its data re-replicated onto it.</p><ol><li><p>Increment the <a href="/docs/4.9.2/reference/config#bookiePort"><code>bookiePort</code></a> parameter in the <a href="/docs/4.9.2/reference/config"><code>bk_server.conf</code></a></p></li><li><p>Ensure that all directories specified by <a href="/docs/4.9.2/reference/config#journalDirectory"><code>journalDirectory</code></a> and <a href="/docs/4.9.2/reference/config#ledgerDirectories"><code>ledgerDirectories</code></a> are empty.</p></li><li><p><a href="#starting-and-stopping-bookies">Start the bookie</a>.</p></li><li><p>Run the following command to re-replicate the data:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ bookkeeper-server/bin/bookkeeper shell recover </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token operator" style="color:#393A34"><</span><span class="token plain">zkserver</span><span class="token operator" style="color:#393A34">></span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token operator" style="color:#393A34"><</span><span class="token plain">oldbookie</span><span class="token operator" style="color:#393A34">></span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token operator" style="color:#393A34"><</span><span class="token plain">newbookie</span><span class="token operator" style="color:#393A34">></span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>The ZooKeeper server, old bookie, and new bookie, are all identified by their external IP and <code>bookiePort</code> (3181 by default). Here's an example:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">$ bookkeeper-server/bin/bookkeeper shell recover </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> zk1.example.com </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token number" style="color:#36acaa">192.168</span><span class="token plain">.1.10:3181 </span><span class="token punctuation" style="color:#393A34">\</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"> </span><span class="token number" style="color:#36acaa">192.168</span><span class="token plain">.1.10:3181</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>See the <a href="/docs/4.9.2/admin/autorecovery">AutoRecovery</a> documentation for more info on the re-replication process.</p></li></ol></div></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/docs/4.9.2/deployment/kubernetes"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">Deploying Apache BookKeeper on Kubernetes</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/docs/4.9.2/admin/autorecovery"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">Using AutoRecovery</div></a></nav></div></div><div class="col col--3"><div class="tableOfContents_bqdL thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#requirements" class="table-of-contents__link toc-highlight">Requirements</a><ul><li><a href="#performance" class="table-of-contents__link toc-highlight">Performance</a></li><li><a href="#zookeeper" class="table-of-contents__link toc-highlight">ZooKeeper</a></li></ul></li><li><a href="#starting-and-stopping-bookies" class="table-of-contents__link toc-highlight">Starting and stopping bookies</a><ul><li><a href="#local-bookies" class="table-of-contents__link toc-highlight">Local bookies</a></li></ul></li><li><a href="#configuring-bookies" class="table-of-contents__link toc-highlight">Configuring bookies</a></li><li><a href="#logging" class="table-of-contents__link toc-highlight">Logging</a></li><li><a href="#upgrading" class="table-of-contents__link toc-highlight">Upgrading</a><ul><li><a href="#upgrade-pattern" class="table-of-contents__link toc-highlight">Upgrade pattern</a></li></ul></li><li><a href="#formatting" class="table-of-contents__link toc-highlight">Formatting</a></li><li><a href="#autorecovery" class="table-of-contents__link toc-highlight">AutoRecovery</a></li><li><a href="#missing-disks-or-directories" class="table-of-contents__link toc-highlight">Missing disks or directories</a></li></ul></div></div></div></div></main></div></div><footer class="footer footer--dark"><div 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