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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[DOCS-858] changing ulimit -n on EC2 instances running Amazon Linux</title>
                <link>https://jira.mongodb.org/browse/DOCS-858</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;&lt;a href=&quot;http://docs.mongodb.org/manual/administration/ulimit/#review-and-set-resource-limits&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://docs.mongodb.org/manual/administration/ulimit/#review-and-set-resource-limits&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;It says you can change the max number of open files to 20000 with&lt;/p&gt;
&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;ulimit -n 20000&lt;/span&gt;&lt;/pre&gt;
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&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;But that fails on Amazon Linux EC2 instances with this error:&lt;/p&gt;
&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;-bash: ulimit: open files: cannot modify limit: Operation not permitted&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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&lt;p/&gt;


&lt;p&gt;This link describes how to do it (and how it is persistent as well):&lt;br/&gt;
&lt;a href=&quot;http://stackoverflow.com/questions/11342167/how-to-increase-ulimit-on-amazon-ec2-instance&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://stackoverflow.com/questions/11342167/how-to-increase-ulimit-on-amazon-ec2-instance&lt;/a&gt; &lt;/p&gt;


&lt;p&gt;We should mention this on our documentation since many customers will probably work with Amazon Linux on EC2.&lt;/p&gt;

</description>
                <environment></environment>
        <key id="58613">DOCS-858</key>
            <summary>changing ulimit -n on EC2 instances running Amazon Linux</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="sam.kleinman">Sam Kleinman</assignee>
                                    <reporter username="thomas.rueckstiess@mongodb.com">Thomas Rueckstiess</reporter>
                        <labels>
                    </labels>
                <created>Fri, 7 Dec 2012 05:29:23 +0000</created>
                <updated>Fri, 5 Jul 2013 11:08:40 +0000</updated>
                            <resolved>Fri, 7 Dec 2012 15:26:38 +0000</resolved>
                                                                        <due></due>
                            <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="374575" author="pj" created="Fri, 5 Jul 2013 11:08:40 +0000"  >&lt;p&gt;It would have probably took less effort to actually just give a sentence of what is needed for a common cloud distribution (EC2), than what was put forth in the explanation of why you were not doing it in this ticket.&lt;/p&gt;</comment>
                            <comment id="208985" author="auto" created="Fri, 7 Dec 2012 15:26:32 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-12-07T15:26:22Z&apos;, u&apos;name&apos;: u&apos;Sam Kleinman&apos;, u&apos;email&apos;: u&apos;samk@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-858&quot; title=&quot;changing ulimit -n on EC2 instances running Amazon Linux&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-858&quot;&gt;&lt;del&gt;DOCS-858&lt;/del&gt;&lt;/a&gt;: clarify ulimit instructions&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/b31bc318cbf2bd058f4ec677273da220efee206e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/b31bc318cbf2bd058f4ec677273da220efee206e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="208984" author="samk" created="Fri, 7 Dec 2012 15:24:51 +0000"  >&lt;p&gt;this document does not mention or describe specifics for different distributions of linux, and I think that&apos;s beyond the scope of this document to give instruction on operating system-specific configuration processes. Not only is that outside of scope, but given the fact that we theoretically support countless distribution there&apos;s no good place to draw boundaries on this, and more importantly no good way to keep track of changes in behavior as things change in various distributions.&lt;/p&gt;

&lt;p&gt;I&apos;m adding a sentence to tell people to refer to their operating system instructions for clarifications on procedure. &lt;/p&gt;</comment>
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