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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-8479] Let system administrator specify the GSSAPI service and host name reported by mongo servers.</title>
                <link>https://jira.mongodb.org/browse/SERVER-8479</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently, the GSSAPI service name for a mongo server is hardcoded to mongodb, and the hostname for authentication purposes is found by calling getHostName().  This requires customers to have a working DNS setup, and to not use CNAMEs to identify mongo nodes to clients.&lt;/p&gt;

&lt;p&gt;A solution that allows customers to use CNAMEs is to allow system admins to optionally override at startup the hostname used by the server for purposes of sasl authentication.&lt;/p&gt;</description>
                <environment></environment>
        <key id="64638">SERVER-8479</key>
            <summary>Let system administrator specify the GSSAPI service and host name reported by mongo servers.</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</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="schwerin@mongodb.com">Andy Schwerin</assignee>
                                    <reporter username="schwerin@mongodb.com">Andy Schwerin</reporter>
                        <labels>
                    </labels>
                <created>Fri, 8 Feb 2013 16:15:03 +0000</created>
                <updated>Mon, 18 Nov 2013 22:21:12 +0000</updated>
                            <resolved>Wed, 20 Feb 2013 22:39:14 +0000</resolved>
                                                    <fixVersion>2.4.0-rc1</fixVersion>
                                    <component>Security</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="271559" author="schwerin" created="Wed, 20 Feb 2013 22:39:14 +0000"  >&lt;p&gt;Splitting this ticket in two.  The work already committed allows for the use of CNAMEs, as described below, without changes to client drivers or the ismaster command, as required by the follow-on &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-8641&quot; title=&quot;Allow client to learn the service principal name for authentication purposes from the ismaster command&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-8641&quot;&gt;&lt;del&gt;SERVER-8641&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;Suppose that a mongo server runs on a machine named m101.example.com, but that clients should connect to it via the CNAME m.example.com.  The administrator should create a service principal &quot;mongodb/m.example.com@EXAMPLE.COM&quot;, put keys for that principal into a keytab on m101.example.com, say in /data/m.keytab, and then run mongod as follows:&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;env KRB5_KTNAME=/data/m.keytab mongod \&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;    --auth \&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;    --setParameter authenticationMechanisms=GSSAPI \&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;    --setParameter saslHostName m.example.com \&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;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;Then, clients can connect and authenticate to &quot;m.example.com&quot; using GSSAPI.  They should typically use the fully qualified domain name, to avoid authentication errors.&lt;/p&gt;</comment>
                            <comment id="266321" author="schwerin" created="Thu, 14 Feb 2013 17:27:18 +0000"  >&lt;p&gt;Due to behavior of the underlying GSSAPI library mandated by &lt;a href=&quot;http://tools.ietf.org/html/rfc1964&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://tools.ietf.org/html/rfc1964&lt;/a&gt;, it may be impossible to reliably override the host name portion of the service principal name when reverse DNS is available to resolve the service host&apos;s ANAME from its IP address.&lt;/p&gt;</comment>
                    </comments>
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                    <name>Depends</name>
                                                                <inwardlinks description="is depended on by">
                                        <issuelink>
            <issuekey id="77865">JAVA-845</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="69638">DRIVERS-1889</issuekey>
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                                        <issuelink>
            <issuekey id="63206">SERVER-8325</issuekey>
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            <issuekey id="98780">SERVER-11770</issuekey>
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