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    <title>MongoDB Jira</title>
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    <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-4514] Instructions for Restore a Sharded Cluster make a number of assumptions</title>
                <link>https://jira.mongodb.org/browse/DOCS-4514</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;The documentation page for &quot;Restore a Sharded Cluster&quot; makes a number of implicit assumptions.&lt;/p&gt;

&lt;p&gt;These assumptions should be explicitly mentioned in the documentation, in order to avoid confusion.&lt;/p&gt;

&lt;p&gt;Firstly, the documentation assumes that you are either restoring onto the same hostnames, or if not, then you are restoring onto new hostnames where the old environment is &lt;b&gt;no longer accessible&lt;/b&gt; from the destination environment. If the old environment is accessible, when you spin up the config servers and mongos, they will attempt to reach out to the old shard servers.&lt;/p&gt;

&lt;p&gt;You will then see messages like this:&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;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 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;mongos&amp;gt; show collections&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 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;Mon Dec  8 23:36:44.806 error: {&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 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;	&quot;$err&quot; : &quot;could not initialize sharding on connection foo/bar0:27201,bar1:27201,bar2:27201,bar3:27201,fsap7:27201 :: caused by :: mongos specified a different config database string : stored : mongo-configs-1:27280,mongo-configs-2:27280,mongo-configs-3:27280 vs given : staging-foo-configs-1:17280,staging-foo-configs-2:17280,staging-foo-configs-3:17280&quot;,&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 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;	&quot;code&quot; : 15907&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 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;} at src/mongo/shell/query.js:128&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;Secondly, the documentation assumes that you are restoring either onto the same source cluster, or onto a new cluster that has been configured identically - not onto a new blank cluster, or one with different hostnames.&lt;/p&gt;

&lt;p&gt;If you do try to do it onto a blank cluster, particularly one with different hostnames, you will hit some issues.&lt;/p&gt;

&lt;p&gt;Ideally, it would be nice if the most efficient way of doing this particular type of restore was also documented as well.&lt;/p&gt;</description>
                <environment></environment>
        <key id="174494">DOCS-4514</key>
            <summary>Instructions for Restore a Sharded Cluster make a number of assumptions</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="2">Won&apos;t Fix</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="victor.hooi">Victor Hooi</reporter>
                        <labels>
                    </labels>
                <created>Mon, 15 Dec 2014 01:34:39 +0000</created>
                <updated>Wed, 11 Jan 2017 22:42:21 +0000</updated>
                            <resolved>Wed, 27 Jul 2016 17:19:36 +0000</resolved>
                                                    <fixVersion>01112017-cleanup</fixVersion>
                                    <component>production</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="1337900" author="emily.hall" created="Wed, 27 Jul 2016 17:19:36 +0000"  >&lt;p&gt;Closed by Emily Hall for Housekeeping on 7/27/16.&lt;br/&gt;
Please create a new ticket if for prioritization.&lt;/p&gt;

&lt;p&gt;Thank you!&lt;/p&gt;</comment>
                    </comments>
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            <issuekey id="174518">DOCS-4516</issuekey>
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