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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>
    </build-info>


<item>
            <title>[SERVER-20965] rs.initiate() with no parameters can choose a poor hostname</title>
                <link>https://jira.mongodb.org/browse/SERVER-20965</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Calling rs.initiate() (i.e. without a configuration object) will cause MongoDB to create its own replicaSet configuration. Unfortunately, for &quot;host&quot; it chooses the computer name without the domain name. Of course this is only a problem when working with computers across different domains, which is probably why no one has noticed it before now.&lt;/p&gt;

&lt;p&gt;Workaround: call rs.initiate with a configuration object 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;
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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;    {&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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				&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;        _id: &quot;rs0&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;        members: [{&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;            _id: 0,&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;            host: &quot;host.domain.tld:port&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;        }]&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;    }&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
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&lt;/div&gt;
&lt;p/&gt;</description>
                <environment></environment>
        <key id="234740">SERVER-20965</key>
            <summary>rs.initiate() with no parameters can choose a poor hostname</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="evin.roesle@mongodb.com">Evin Roesle</assignee>
                                    <reporter username="tsnee">Tom Snee</reporter>
                        <labels>
                    </labels>
                <created>Fri, 16 Oct 2015 13:52:35 +0000</created>
                <updated>Fri, 31 Jan 2020 19:29:33 +0000</updated>
                            <resolved>Fri, 31 Jan 2020 19:29:33 +0000</resolved>
                                    <version>3.0.7</version>
                                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>9</watches>
                                                                                                                <comments>
                            <comment id="2777462" author="evin.roesle" created="Fri, 31 Jan 2020 19:29:33 +0000"  >&lt;p&gt;Closing this ticket as Won&apos;t Fix.&#160;If you are experiencing this issue without a way to remediate, please reopen this ticket.&lt;/p&gt;</comment>
                            <comment id="1062952" author="schwerin" created="Fri, 16 Oct 2015 15:59:28 +0000"  >&lt;p&gt;I suppose so. I would want this back ported to the supported releases in that case, so we could update the tutorials.&lt;/p&gt;</comment>
                            <comment id="1062913" author="milkie" created="Fri, 16 Oct 2015 15:31:43 +0000"  >&lt;p&gt;True.  Since the logic for 1.1 is already built in to the replSetInitiate command when presented with no config, we could simply change the command itself to take an array as the first parameter and then we wouldn&apos;t have to duplicate the logic in the shell.&lt;/p&gt;</comment>
                            <comment id="1062900" author="schwerin" created="Fri, 16 Oct 2015 15:27:18 +0000"  >&lt;p&gt;We have to do 1.1 to at least one node in order to figure out the name of the replica set. We could do it against the node represented by &quot;db&quot;. I think that gets us down to 5 and 6, yeah.&lt;/p&gt;</comment>
                            <comment id="1062855" author="milkie" created="Fri, 16 Oct 2015 15:04:51 +0000"  >&lt;p&gt;If we skipped steps and just did steps 5 and 6, would the replSetInitiate command catch and report most of the errors mentioned in the previous steps?  Is the advantage of doing this in the shell that we can report better error messages?&lt;/p&gt;</comment>
                            <comment id="1062844" author="schwerin" created="Fri, 16 Oct 2015 15:00:52 +0000"  >&lt;p&gt;My proposal could probably be implemented entirely in the shell. The procedure would be approximately as follows:&lt;/p&gt;

&lt;ol&gt;
	&lt;li&gt;for each host named in the array
	&lt;ol&gt;
		&lt;li&gt;Run getCmdLineOpts and extract the node&apos;s belief about the replica set name from parsed.replication.replSet or parsed.replication.replSetName&lt;/li&gt;
		&lt;li&gt;Run isMaster and confirm that &quot;isreplicaset&quot; is set to &quot;true&quot;, which indicates an uninitialized replica set member. Otherwise, error out.&lt;/li&gt;
		&lt;li&gt;Run _isSelf on each node.&lt;/li&gt;
	&lt;/ol&gt;
	&lt;/li&gt;
	&lt;li&gt;If the proposed members don&apos;t all agree on the set name, error out.&lt;/li&gt;
	&lt;li&gt;If any of the nodes report the same _isSelf.id value, error out.&lt;/li&gt;
	&lt;li&gt;If there is a valid &quot;db&quot; global variable in the shell, run _isSelf against it; if it isn&apos;t the same as one of the reported nodes&apos; _isSelf.id, error out (optional)&lt;/li&gt;
	&lt;li&gt;Construct a replica set config document using the data gathered&lt;/li&gt;
	&lt;li&gt;Run replSetInitiate against &quot;db&quot; or, if there is no&quot;db&quot;, against the first node in the list.&lt;/li&gt;
&lt;/ol&gt;
</comment>
                            <comment id="1062788" author="schwerin" created="Fri, 16 Oct 2015 14:25:32 +0000"  >&lt;p&gt;What if we changed rs.initiate() to take a list of hosts to constitute the replica set? This way, you could run the following single command in the shell to initiate your replica set and add all of the nodes at once, without having to hand-construct the config document.  E.g., you could run&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;
		&lt;tbody &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-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;rs.initiate([&quot;host1:port1&quot;, &quot;host2:port2&quot;, &quot;host3:port3&quot;])&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;instead of&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;
		&lt;tbody &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-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;rs.initiate()  // !!! What host will the server choose?&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;rs.add(&quot;host2:port2&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;   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;rs.add(&quot;host3:port3&quot;)&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;Obviously, we&apos;d then need to update the tutorials and documentation appropriately.&lt;/p&gt;

&lt;p&gt;We could, in principle, also change the implementation of rs.initiate() in the shell to use the connection string supplied to the shell if no arguments were provided, instead of expecting the server to figure it out on its own. That might cause a lot of users to end up with replica sets configured for localhost, by accident, though, so I&apos;m not a huge fan.&lt;/p&gt;</comment>
                    </comments>
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                            <issuelinktype id="10012">
                    <name>Related</name>
                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="29207">SERVER-4784</issuekey>
        </issuelink>
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                            <customfieldvalue>&lt;p&gt;Follow the steps outlined in &lt;a href=&quot;https://docs.mongodb.org/master/tutorial/deploy-replica-set-with-auth/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://docs.mongodb.org/master/tutorial/deploy-replica-set-with-auth/&lt;/a&gt;. Examine the configuration object returned by rs.conf().&lt;/p&gt;

&lt;p&gt;Expected: members[0].host is &quot;mongodb0.example.net:27017&quot;&lt;/p&gt;

&lt;p&gt;Actual: members[0].host is &quot;mongodb0:27017&quot;&lt;/p&gt;</customfieldvalue>

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