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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>[SERVER-32706] Mongodb failing with message Got signal: 6 (Aborted)</title>
                <link>https://jira.mongodb.org/browse/SERVER-32706</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;My mongodb has been crashing repeatedly. &lt;br/&gt;
The last two times the log showed the same error: Got signal: 6 (Aborted) &lt;/p&gt;

&lt;p&gt;I&apos;m running my server on AWS using:&lt;br/&gt;
MEAN Bitnami-3.4.9-0 instance Ubuntu 14.04&lt;/p&gt;

&lt;p&gt;I updated my ulimit to unlimited previously but I&apos;m still receiving the same error. &lt;br/&gt;
I&apos;ve attached the latest logs.&lt;/p&gt;</description>
                <environment></environment>
        <key id="483122">SERVER-32706</key>
            <summary>Mongodb failing with message Got signal: 6 (Aborted)</summary>
                <type id="6" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14720&amp;avatarType=issuetype">Question</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="kelsey.schubert@mongodb.com">Kelsey Schubert</assignee>
                                    <reporter username="philip.leesha">Philip</reporter>
                        <labels>
                    </labels>
                <created>Mon, 15 Jan 2018 18:45:05 +0000</created>
                <updated>Mon, 2 Apr 2018 22:00:39 +0000</updated>
                            <resolved>Fri, 9 Mar 2018 17:13:00 +0000</resolved>
                                    <version>3.4.9</version>
                                                    <component>Admin</component>
                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="1828991" author="thomas.schubert" created="Fri, 9 Mar 2018 17:13:00 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=philip.leesha&quot; class=&quot;user-hover&quot; rel=&quot;philip.leesha&quot;&gt;philip.leesha&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;We haven&#8217;t heard back from you for some time, so I&#8217;m going to mark this ticket as resolved. If this is still an issue for you, please provide additional information and we will reopen the ticket.&lt;/p&gt;

&lt;p&gt;Regards,&lt;br/&gt;
Kelsey&lt;/p&gt;</comment>
                            <comment id="1810603" author="thomas.schubert" created="Tue, 20 Feb 2018 18:33:09 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=philip.leesha&quot; class=&quot;user-hover&quot; rel=&quot;philip.leesha&quot;&gt;philip.leesha&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;I just wanted to confirm that this issue has been resolved by upgrading your instance.&lt;/p&gt;

&lt;p&gt;Thanks,&lt;br/&gt;
Kelsey&lt;/p&gt;</comment>
                            <comment id="1785593" author="philip.leesha" created="Fri, 26 Jan 2018 02:02:27 +0000"  >&lt;p&gt;Hi Mark, &lt;/p&gt;

&lt;p&gt;I checked the wired tiger cache size and it was set to use only about 40% of my total ram on my instance. However since this seems to be a persistent error I upgraded my instance so now I have a lot more ram to work with. I checked in with the wired tiger cache size on my upgraded instance and its still a percentage of my total ram. I&apos;m hoping the increased memory leeway solves my issue. &lt;/p&gt;</comment>
                            <comment id="1783870" author="mark.agarunov" created="Wed, 24 Jan 2018 19:30:59 +0000"  >&lt;p&gt;Hello &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=philip.leesha&quot; class=&quot;user-hover&quot; rel=&quot;philip.leesha&quot;&gt;philip.leesha&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Thank you for the additional information. The out of memory error generally indicates that MongoDB is set to use more memory than is available on the server and was killed by the system once it had exhausted the memory, however if you provide the complete logs from the crash we can confirm that. To reduce memory usage, you can set the &lt;a href=&quot;https://docs.mongodb.com/manual/reference/configuration-options/#storage.wiredTiger.engineConfig.cacheSizeGB&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Wired Tiger cache size&lt;/a&gt; to a lower value.&lt;/p&gt;

&lt;p&gt;Thanks,&lt;br/&gt;
Mark&lt;/p&gt;</comment>
                            <comment id="1783007" author="philip.leesha" created="Wed, 24 Jan 2018 01:59:18 +0000"  >&lt;p&gt;Hi Mark, &lt;/p&gt;

&lt;p&gt;My issue is still not resolved unfortunately. I&apos;ve attached a new log failure. this time with a different kind of error: &quot;out of memory.&quot;&lt;br/&gt;
I also answered your questions below.&lt;/p&gt;

&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;Is this using docker and/or containers?&lt;br/&gt;
&lt;b&gt;I don&apos;t think its using either.&lt;/b&gt;&lt;/li&gt;
&lt;/ul&gt;


&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;Is this running in a virtual machine or directly on hardware, if in a vm, which virtualization is it using(xen, kvm, hyperv, etc)?&lt;br/&gt;
&lt;b&gt;It&apos;s a vm using xen&lt;/b&gt;&lt;/li&gt;
&lt;/ul&gt;


&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;Has this been an issue in the past with this setup, or has this just started happening?&lt;br/&gt;
&lt;b&gt;its hard to pinpoint the exact moment this started happening&lt;/b&gt;&lt;/li&gt;
&lt;/ul&gt;


&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;If this is a new issue, were there any recent changes made to the system or mongodb configuration?&lt;br/&gt;
&lt;b&gt;it is a new issue, as in it happened long after I set up my configuration.&lt;/b&gt;&lt;/li&gt;
&lt;/ul&gt;
</comment>
                            <comment id="1779662" author="mark.agarunov" created="Fri, 19 Jan 2018 22:19:33 +0000"  >&lt;p&gt;Hello &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=philip.leesha&quot; class=&quot;user-hover&quot; rel=&quot;philip.leesha&quot;&gt;philip.leesha&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Thank you for the additional information. I&apos;ll leave this ticket in &quot;waiting for user input&quot; for a few days and check in next week (unless you hit the error before then) so we can confirm that increasing the ulimits has fixed the problem.&lt;/p&gt;

&lt;p&gt;Thanks,&lt;br/&gt;
Mark&lt;/p&gt;</comment>
                            <comment id="1776018" author="philip.leesha" created="Wed, 17 Jan 2018 01:38:09 +0000"  >&lt;p&gt;Hi Mark, &lt;/p&gt;

&lt;p&gt;I updated my ulimits to the recommended values. As mongodb was failing intermittently every few days, I&apos;ll have to wait a few days to see if the limit increase fixed my issue. &lt;/p&gt;

&lt;p&gt;Thank you for your help,&lt;br/&gt;
Phil&lt;/p&gt;</comment>
                            <comment id="1775592" author="mark.agarunov" created="Tue, 16 Jan 2018 20:11:23 +0000"  >&lt;p&gt;Hello &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=philip.leesha&quot; class=&quot;user-hover&quot; rel=&quot;philip.leesha&quot;&gt;philip.leesha&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Thank you for providing the additional info. My initial suggestion would be to attempt to increase the following ulimits:&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&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;open files [-n] &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;max user processes [-u]&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;to at least the &lt;a href=&quot;https://docs.mongodb.com/manual/reference/ulimit/#recommended-ulimit-settings&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;recommended values&lt;/a&gt;. If this is still an issue after increasing the limits, please provide a description of how this node is set up:&lt;/p&gt;

&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;Is this using docker and/or containers?&lt;/li&gt;
	&lt;li&gt;Is this running in a virtual machine or directly on hardware, if in a vm, which virtualization is it using(xen, kvm, hyperv, etc)?&lt;/li&gt;
	&lt;li&gt;Has this been an issue in the past with this setup, or has this just started happening?&lt;/li&gt;
	&lt;li&gt;If this is a new issue, were there any recent changes made to the system or mongodb configuration?&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Thanks,&lt;br/&gt;
Mark&lt;/p&gt;</comment>
                            <comment id="1775214" author="philip.leesha" created="Tue, 16 Jan 2018 16:54:20 +0000"  >&lt;p&gt;Hi Mark,&lt;/p&gt;

&lt;p&gt;Thank you so much for your quick reply. I&apos;m not sure if I increased the thread limits. Below are the ulimits for all limits set on my server. &lt;/p&gt;

&lt;p&gt;Here are the hard limits: (ulimit -H -a) &lt;br/&gt;
core file size          (blocks, -c) unlimited&lt;br/&gt;
data seg size           (kbytes, -d) unlimited&lt;br/&gt;
scheduling priority             (-e) 0&lt;br/&gt;
file size               (blocks, -f) unlimited&lt;br/&gt;
pending signals                 (-i) 7858&lt;br/&gt;
max locked memory       (kbytes, -l) unlimited&lt;br/&gt;
max memory size         (kbytes, -m) unlimited&lt;br/&gt;
open files                      (-n) 4096&lt;br/&gt;
pipe size            (512 bytes, -p) 8&lt;br/&gt;
POSIX message queues     (bytes, -q) 819200&lt;br/&gt;
real-time priority              (-r) 0&lt;br/&gt;
stack size              (kbytes, -s) unlimited&lt;br/&gt;
cpu time               (seconds, -t) unlimited&lt;br/&gt;
max user processes              (-u) 32768&lt;br/&gt;
virtual memory          (kbytes, -v) unlimited&lt;br/&gt;
file locks                      (-x) unlimited&lt;/p&gt;</comment>
                            <comment id="1775105" author="mark.agarunov" created="Tue, 16 Jan 2018 15:49:16 +0000"  >&lt;p&gt;Hello &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=philip.leesha&quot; class=&quot;user-hover&quot; rel=&quot;philip.leesha&quot;&gt;philip.leesha&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Thank you for the report. Looking over the logs, there appears to be a significant amount of errors similar to &lt;tt&gt;pthread_create failed: Resource temporarily unavailable&lt;/tt&gt; before the crash. Generally this indicates that the thread limit has been reached and the process cannot fork. When increasing ulimits, was the thread limit increased as well? If possible, please provide the ulimit parameters set for all limits.&lt;/p&gt;

&lt;p&gt;Thanks,&lt;br/&gt;
Mark&lt;/p&gt;</comment>
                    </comments>
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                            <attachment id="175914" name="mongoDB_log_2018-01-10.txt" size="11683" author="philip.leesha" created="Mon, 15 Jan 2018 18:42:23 +0000"/>
                            <attachment id="175913" name="mongoDB_log_2018-01-14.txt" size="23414" author="philip.leesha" created="Mon, 15 Jan 2018 18:42:33 +0000"/>
                            <attachment id="176674" name="mongoDB_log_2018-01-23.txt" size="9780" author="philip.leesha" created="Wed, 24 Jan 2018 01:59:33 +0000"/>
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