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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[DOCS-7485] Do not recomend disabling core dumps on production systems</title>
                <link>https://jira.mongodb.org/browse/DOCS-7485</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;The &lt;a href=&quot;https://docs.mongodb.org/manual/release-notes/3.2-upgrade/#manual-upgrade&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;3.2 release notes upgrade procedure&lt;/a&gt; recommends disabling core dumps in production:&lt;/p&gt;

&lt;blockquote&gt;&lt;p&gt;For production environments, you may prefer to turn off core dumps for the operating system, if not already.&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;Core dumps provide information which can be invaluable in situations where a mongod/mongos has experienced a hard crash.  In cases where the crash happens very infrequently, with unknown cause/triggers, and so cannot be reproduced, having a core dump from an unexpected event may be the difference between fixing the bug (preventing the possibility of recurrences) and not.  Keeping core dumps on production systems is a useful practice in much the same way that logs of prod systems are useful.&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-6018&quot; title=&quot;Document SERVER-18474 (provide core dump on fassert and invariant failures) in 3.2 release notes&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-6018&quot;&gt;&lt;del&gt;DOCS-6018&lt;/del&gt;&lt;/a&gt; alludes that &quot;[core dumps] may cause problems in production environments&quot;, but does not explain what those perceived problems are seen to be.  &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=ramon.fernandez&quot; class=&quot;user-hover&quot; rel=&quot;ramon.fernandez&quot;&gt;ramon.fernandez&lt;/a&gt;, can you please elaborate on this point?&lt;/p&gt;</description>
                <environment></environment>
        <key id="274116">DOCS-7485</key>
            <summary>Do not recomend disabling core dumps on production systems</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="9">Done</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="kevin.pulo@mongodb.com">Kevin Pulo</reporter>
                        <labels>
                    </labels>
                <created>Mon, 21 Mar 2016 23:42:01 +0000</created>
                <updated>Wed, 11 Jan 2017 21:46:05 +0000</updated>
                            <resolved>Wed, 23 Mar 2016 23:31:11 +0000</resolved>
                                                    <fixVersion>01112017-cleanup</fixVersion>
                                    <component>manual</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="1213278" author="ramon.fernandez" created="Wed, 23 Mar 2016 23:29:48 +0000"  >&lt;p&gt;IIUC, core dumps in production have a couple of main problems:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;while the system is doing a core dump the process can&apos;t be killed, so enabling core dumps in production means that one can&apos;t quickly restart nodes; depending on the size and the speed of the underlying storage, the dump can take days&lt;/li&gt;
	&lt;li&gt;they may require a very large amount of storage, which may cause assorted other problems&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;I therefore think the recommendation should stay, so I&apos;m resolving this ticket.&lt;/p&gt;</comment>
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