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<channel>
    <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-46911] Allow logging to pipe</title>
                <link>https://jira.mongodb.org/browse/SERVER-46911</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;It is my understanding that in server 4.4 the only log format supported is json. While this format has undisputable benefits when it is parsed by machines, its readability by human beings is often significantly inferior to the old text format.&lt;/p&gt;

&lt;p&gt;For example, the following log output is produced when a 4.2 server starts:&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;2020-03-17T00:19:19.719-0400 I  SHARDING [initandlisten] Marking collection admin.system.roles as collec&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;tion version: &amp;lt;unsharded&amp;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;   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;2020-03-17T00:19:19.719-0400 I  SHARDING [initandlisten] Marking collection admin.system.version as coll&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;ection version: &amp;lt;unsharded&amp;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;   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;2020-03-17T00:19:19.719-0400 I  STORAGE  [initandlisten] createCollection: local.startup_log with genera&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;ted UUID: 7206169f-38d1-4217-a27a-0341d594fbbe and options: { capped: true, size: 10485760 }&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;2020-03-17T00:19:19.875-0400 I  INDEX    [initandlisten] index build: done building index _id_ on ns loc&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;al.startup_log&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;2020-03-17T00:19:19.876-0400 I  SHARDING [initandlisten] Marking collection local.startup_log as collect&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;ion version: &amp;lt;unsharded&amp;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;   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;2020-03-17T00:19:19.876-0400 I  FTDC     [initandlisten] Initializing full-time diagnostic data capture &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;with directory &apos;/mnt/zram/mongodb/4.2-rs/ruby-driver-rs/rs1/db/diagnostic.data&apos;&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;2020-03-17T00:19:19.876-0400 I  STORAGE  [initandlisten] createCollection: local.replset.oplogTruncateAf&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;terPoint with generated UUID: a21115fb-ec78-4889-9d24-d84e9815ca43 and options: {}&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;2020-03-17T00:19:20.042-0400 I  INDEX    [initandlisten] index build: done building index _id_ on ns loc&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;al.replset.oplogTruncateAfterPoint&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;And the following is the same output from a 4.4 server:&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;{&quot;t&quot;:{&quot;$date&quot;:&quot;2020-03-15T20:08:31.317-0400&quot;},&quot;s&quot;:&quot;I&quot;, &quot;c&quot;:&quot;INDEX&quot;,   &quot;id&quot;:20345,&quot;ctx&quot;:&quot;initandlisten&quot;,&quot;msg&quot;:&quot;index build: done building index {indexName} on ns {nss}&quot;,&quot;attr&quot;:{&quot;indexName&quot;:&quot;_id_&quot;,&quot;nss&quot;:&quot;local.startup_log&quot;}}&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;{&quot;t&quot;:{&quot;$date&quot;:&quot;2020-03-15T20:08:31.326-0400&quot;},&quot;s&quot;:&quot;I&quot;, &quot;c&quot;:&quot;FTDC&quot;,    &quot;id&quot;:20625,&quot;ctx&quot;:&quot;initandlisten&quot;,&quot;msg&quot;:&quot;Initializing full-time diagnostic data capture with directory &apos;{path_generic_string}&apos;&quot;,&quot;attr&quot;:{&quot;path_generic_string&quot;:&quot;/mnt/zram/mongodb/4.4-rs/ruby-driver-rs/rs1/db/diagnostic.data&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;t&quot;:{&quot;$date&quot;:&quot;2020-03-15T20:08:31.327-0400&quot;},&quot;s&quot;:&quot;I&quot;, &quot;c&quot;:&quot;STORAGE&quot;, &quot;id&quot;:20320,&quot;ctx&quot;:&quot;initandlisten&quot;,&quot;msg&quot;:&quot;createCollection: {nss} with {generatedUUID_generated_provided} UUID: {optionsWithUUID_uuid_get} and options: {options}&quot;,&quot;attr&quot;:{&quot;nss&quot;:&quot;local.replset.oplogTruncateAfterPoint&quot;,&quot;generatedUUID_generated_provided&quot;:&quot;generated&quot;,&quot;optionsWithUUID_uuid_get&quot;:{&quot;uuid&quot;:{&quot;$uuid&quot;:&quot;ad7a88e7-8ff1-42bf-bc9a-75c7526e6cfe&quot;}},&quot;options&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;t&quot;:{&quot;$date&quot;:&quot;2020-03-15T20:08:31.499-0400&quot;},&quot;s&quot;:&quot;I&quot;, &quot;c&quot;:&quot;INDEX&quot;,   &quot;id&quot;:20345,&quot;ctx&quot;:&quot;initandlisten&quot;,&quot;msg&quot;:&quot;index build: done building index {indexName} on ns {nss}&quot;,&quot;attr&quot;:{&quot;indexName&quot;:&quot;_id_&quot;,&quot;nss&quot;:&quot;local.replset.oplogTruncateAfterPoint&quot;}}&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;{&quot;t&quot;:{&quot;$date&quot;:&quot;2020-03-15T20:08:31.500-0400&quot;},&quot;s&quot;:&quot;I&quot;, &quot;c&quot;:&quot;STORAGE&quot;, &quot;id&quot;:20320,&quot;ctx&quot;:&quot;initandlisten&quot;,&quot;msg&quot;:&quot;createCollection: {nss} with {generatedUUID_generated_provided} UUID: {optionsWithUUID_uuid_get} and options: {options}&quot;,&quot;attr&quot;:{&quot;nss&quot;:&quot;local.replset.minvalid&quot;,&quot;generatedUUID_generated_provided&quot;:&quot;generated&quot;,&quot;optionsWithUUID_uuid_get&quot;:{&quot;uuid&quot;:{&quot;$uuid&quot;:&quot;eef6f8db-fcea-49c8-a4b5-c6128d6118e9&quot;}},&quot;options&quot;:{}}}&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;{&quot;t&quot;:{&quot;$date&quot;:&quot;2020-03-15T20:08:31.708-0400&quot;},&quot;s&quot;:&quot;I&quot;, &quot;c&quot;:&quot;INDEX&quot;,   &quot;id&quot;:20345,&quot;ctx&quot;:&quot;initandlisten&quot;,&quot;msg&quot;:&quot;index build: done building index {indexName} on ns {nss}&quot;,&quot;attr&quot;:{&quot;indexName&quot;:&quot;_id_&quot;,&quot;nss&quot;:&quot;local.replset.minvalid&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;t&quot;:{&quot;$date&quot;:&quot;2020-03-15T20:08:31.741-0400&quot;},&quot;s&quot;:&quot;I&quot;, &quot;c&quot;:&quot;STORAGE&quot;, &quot;id&quot;:20320,&quot;ctx&quot;:&quot;initandlisten&quot;,&quot;msg&quot;:&quot;createCollection: {nss} with {generatedUUID_generated_provided} UUID: {optionsWithUUID_uuid_get} and options: {options}&quot;,&quot;attr&quot;:{&quot;nss&quot;:&quot;local.replset.election&quot;,&quot;generatedUUID_generated_provided&quot;:&quot;generated&quot;,&quot;optionsWithUUID_uuid_get&quot;:{&quot;uuid&quot;:{&quot;$uuid&quot;:&quot;fa4d0d0f-7a79-4494-975c-be59735e92f7&quot;}},&quot;options&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;t&quot;:{&quot;$date&quot;:&quot;2020-03-15T20:08:31.911-0400&quot;},&quot;s&quot;:&quot;I&quot;, &quot;c&quot;:&quot;INDEX&quot;,   &quot;id&quot;:20345,&quot;ctx&quot;:&quot;initandlisten&quot;,&quot;msg&quot;:&quot;index build: done building index {indexName} on ns {nss}&quot;,&quot;attr&quot;:{&quot;indexName&quot;:&quot;_id_&quot;,&quot;nss&quot;:&quot;local.replset.election&quot;}}&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;{&quot;t&quot;:{&quot;$date&quot;:&quot;2020-03-15T20:08:31.911-0400&quot;},&quot;s&quot;:&quot;I&quot;, &quot;c&quot;:&quot;REPL&quot;,    &quot;id&quot;:21311,&quot;ctx&quot;:&quot;initandlisten&quot;,&quot;msg&quot;:&quot;Did not find local initialized voted for document at startup.&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;t&quot;:{&quot;$date&quot;:&quot;2020-03-15T20:08:31.911-0400&quot;},&quot;s&quot;:&quot;I&quot;, &quot;c&quot;:&quot;REPL&quot;,    &quot;id&quot;:21312,&quot;ctx&quot;:&quot;initandlisten&quot;,&quot;msg&quot;:&quot;Did not find local Rollback ID document at startup. Creating one.&quot;}&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;{&quot;t&quot;:{&quot;$date&quot;:&quot;2020-03-15T20:08:31.911-0400&quot;},&quot;s&quot;:&quot;I&quot;, &quot;c&quot;:&quot;STORAGE&quot;, &quot;id&quot;:20320,&quot;ctx&quot;:&quot;initandlisten&quot;,&quot;msg&quot;:&quot;createCollection: {nss} with {generatedUUID_generated_provided} UUID: {optionsWithUUID_uuid_get} and options: {options}&quot;,&quot;attr&quot;:{&quot;nss&quot;:&quot;local.system.rollback.id&quot;,&quot;generatedUUID_generated_provided&quot;:&quot;generated&quot;,&quot;optionsWithUUID_uuid_get&quot;:{&quot;uuid&quot;:{&quot;$uuid&quot;:&quot;47dbd567-1290-46d5-84c2-e56785c023ae&quot;}},&quot;options&quot;:{}}}&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;{&quot;t&quot;:{&quot;$date&quot;:&quot;2020-03-15T20:08:32.049-0400&quot;},&quot;s&quot;:&quot;I&quot;, &quot;c&quot;:&quot;INDEX&quot;,   &quot;id&quot;:20345,&quot;ctx&quot;:&quot;initandlisten&quot;,&quot;msg&quot;:&quot;index build: done building index {indexName} on ns {nss}&quot;,&quot;attr&quot;:{&quot;indexName&quot;:&quot;_id_&quot;,&quot;nss&quot;:&quot;local.system.rollback.id&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;A quick glance at the 4.2 log is sufficient to determine what is happening (index builds). The 4.4 log is a wall of text and I cannot get a quick assessment for what the logs are saying at all (in other words, I need to carefully read each log entry to figure out what it is referring to).&lt;/p&gt;

&lt;p&gt;In my opinion the loss of readability is due to:&lt;/p&gt;

&lt;p&gt;1. The log entries becoming much longer. This increases the amount of text that must be processed (while the effective payload remains the same).&lt;br/&gt;
2. Since the log entries have become longer, frequently the important information is no longer in the first 100 or so columns that a user likely has in their view. This means the user either has to scroll right all the time, or the user has to read the logs with lines wrapped. Wrapping lines loses the structure that the text format provided (timestamp, severity, facility etc. aligned vertically) even more and makes the logs again harder to read.&lt;br/&gt;
3. The information is no longer presented continuously because of the separation of formatting strings and the data. For example, &quot;index build: done building index &lt;em&gt;id&lt;/em&gt; on ns local.startup_log&quot; became &quot;msg&quot;:&quot;index build: done building index &lt;/p&gt;
{indexName}
&lt;p&gt; on ns &lt;/p&gt;
{nss}
&lt;p&gt;&quot;,&quot;attr&quot;:&lt;/p&gt;
{&quot;indexName&quot;:&quot;_id_&quot;,&quot;nss&quot;:&quot;local.system.rollback.id&quot;}
&lt;p&gt;. This means the reader must jump back and forth constantly as they are reading the entries.&lt;/p&gt;

&lt;p&gt;As an engineer who develops drivers for the server, as well as a system administrator who reads server logs to troubleshoot the server, I find that the loss of real-time logging in text format has a major negative effect on my productivity.&lt;/p&gt;

&lt;p&gt;There are various tools available for converting json logs to text logs (l2, &lt;a href=&quot;https://github.com/markbenvenuto/mrlog&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/markbenvenuto/mrlog&lt;/a&gt;). Ideally, I would like to send logs to a program that would 1) output json logs unmodified to one file, and 2) convert json log to a text log and store the result in another file. While I am unaware of a program that specifically does this, this seems like a straightforward problem to solve. However, there is the challenge of getting the log to such a program.&lt;/p&gt;

&lt;p&gt;The server currently offers three options for log destination:&lt;/p&gt;

&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;stdout&lt;/li&gt;
	&lt;li&gt;syslog&lt;/li&gt;
	&lt;li&gt;file&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Stdout would be the most suitable destination, since I would be able to trivially pipe the logs to the log splitter program. Unfortunately stdout logging is not allowed when --fork is used, which is the subject of this ticket. It is possible to launch the server without --fork by manually implementing the daemonization externally, but given that I believe there is an easy to implement alternative in the server that allows file/pipe output with forking I believe the server should allow logging to stdout when --fork is used.&lt;/p&gt;

&lt;p&gt;Syslog logging is suitable for production installations when there is only a single mongod/mongos process that can be globally configured. It is not generally suitable for development because I can have over 20 mongod processes running in various deployments including scratch ones and configuring syslog for each of them is untenable.&lt;/p&gt;

&lt;p&gt;File destination requires the log splitter to know when the log is rotated by the server, so that the splitter can reopen the current log file. I am not aware how the splitter might be notified of this event by the server directly, although I imagine a workaround may be devised by watching for changes in the file system in the log directory. The splitter would also need to rename &lt;b&gt;its&lt;/b&gt; log files correctly when the server rotates logs which would be error-prone.&lt;/p&gt;

&lt;p&gt;Expected behavior:&lt;/p&gt;

&lt;p&gt;As an engineer developing drivers for the server and as a system administrator, I would like to have mongod/mongos etc. be able to log to pipe, such as by logging to standard output which I will redirect to a pipe, even when the server forks.&lt;/p&gt;

&lt;p&gt;Implementation:&lt;/p&gt;

&lt;p&gt;I believe it will be sufficient to prohibit logging to stdout when stdout is a tty. If stdout is not a tty, in my understanding it is redirected to either a file or a pipe and hence the logs will be consumed by something and will not be lost, such that it does not seem necessary to prohibit these cases.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1277060">SERVER-46911</key>
            <summary>Allow logging to pipe</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="13202">Works as Designed</resolution>
                                        <assignee username="backlog-server-servicearch">Backlog - Service Architecture</assignee>
                                    <reporter username="oleg.pudeyev@mongodb.com">Oleg Pudeyev</reporter>
                        <labels>
                    </labels>
                <created>Tue, 17 Mar 2020 04:45:58 +0000</created>
                <updated>Fri, 27 Oct 2023 13:52:54 +0000</updated>
                            <resolved>Tue, 7 Apr 2020 23:01:39 +0000</resolved>
                                    <version>4.3.4</version>
                                                                        <votes>1</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="3030475" author="oleg.pudeyev" created="Tue, 7 Apr 2020 23:01:08 +0000"  >&lt;p&gt;Looking at this again I succeeded 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;
		&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;&amp;nbsp;&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;dir=/tmp/log-to-pipe&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;mkdir -p $dir&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;mkfifo $dir/fifo&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;cut -c 10- &amp;lt;$dir/fifo &amp;gt;$dir/out.log &amp;amp;&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;mongod --fork --logpath /dev/fd/8 --logappend --dbpath /tmp/log-to-pipe \&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;  8&amp;gt;$dir/fifo&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;Thanks for the response.&lt;/p&gt;</comment>
                            <comment id="3030457" author="gabriel.russell" created="Tue, 7 Apr 2020 22:38:25 +0000"  >&lt;p&gt;It is an explicit goal of --fork to close stdio. There is no way to allow writing to stdout while under --fork without breaking the functionality of --fork. You do mention the work around of wrapping mongod with something to do your own forking, and I think that it is a perfect fit for the feature that you&apos;re looking for.&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10012">
                    <name>Related</name>
                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="1279351">SERVER-46932</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="1279360">SERVER-46933</issuekey>
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