{"id":1255362,"date":"2021-06-10T07:16:59","date_gmt":"2021-06-10T14:16:59","guid":{"rendered":"https:\/\/www.esri.com\/arcgis-blog\/?post_type=blog&#038;p=1255362"},"modified":"2021-06-10T07:16:59","modified_gmt":"2021-06-10T14:16:59","slug":"monthly-linux-tip-properly-setting-file-handles-and-processes-limits","status":"publish","type":"blog","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/arcgis-enterprise\/administration\/monthly-linux-tip-properly-setting-file-handles-and-processes-limits","title":{"rendered":"Monthly Linux Tip: Properly Setting File Handles and Processes Limits"},"author":10252,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"_acf_changed":false,"_searchwp_excluded":""},"categories":[37501],"tags":[],"industry":[],"product":[36571],"class_list":["post-1255362","blog","type-blog","status-publish","format-standard","hentry","category-administration","product-arcgis-enterprise"],"acf":{"short_description":"To briefly discuss properly setting the \/etc\/security\/limits.conf file to handle file handles and processes limits for ArcGIS Enteprise on Linux.","flexible_content":[{"acf_fc_layout":"content","content":"<p>When installing ArcGIS Enterprise on Linux, the <a href=\"https:\/\/enterprise.arcgis.com\/en\/system-requirements\/latest\/linux\/arcgis-server-system-requirements.htm\">system requirements<\/a> states to properly set file handles and processes limits. A common issue that occurs is that when going to verify if the soft and hard limits have been changed, they appear not to be.<\/p>\n<p>To elaborate, let\u2019s look a scenario to provide context. I am gearing up to install ArcGIS Enterprise 10.9 on my Ubuntu 20.04 machine. I am logged into my non-root user account named <em>ags<\/em>.<\/p>\n<p>The documentation informed me that I need to modify <em>\/etc\/security\/limits.conf<\/em> to set my file handles to 65535 and my process limits to 25059. As this is a root user operation, I switch to my root user. An example is given below:<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2021\/06\/whoami.png\" \/><\/p>\n<p>After updating my <em>limits.conf<\/em> file, I can see I added the following lines:<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2021\/06\/grep-ags.png\" \/><\/p>\n<p>All good to go, right? So I revert back to my <em>ags <\/em>user to verify, but end up with this:<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2021\/06\/ulimit.png\" \/><\/p>\n<p>What happened? One reason why the change did not occur is because you are not in a new non-root user session. If you simply ran the <em>exit<\/em> command from the root user back to the non-root account, no new session is formed. In order to see the change, you must do one of two things:<\/p>\n<ol>\n<li>Exit the terminal session and start a new one.<\/li>\n<li>Run command <em>su<\/em> <em>ags<\/em> and verify the file handles and processes limits.<\/li>\n<\/ol>\n<p>Whichever method you choose should lead you to see the following:<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2021\/06\/ags-ulimit.png\" \/><\/p>\n<p>Let\u2019s say you do this and still no change; what next? Verify if you are using SystemD to bootstrap starting and stopping ArcGIS Enterprise. If you are, then you may need to investigate file <em>\/etc\/systemd\/system.conf<\/em>. The variables <em>DefaultLimitNOFILE<\/em> and <em>DefaultLimitNPROC<\/em> may need to be properly set to 65535 and 25059, respectively.<\/p>\n<p>As always, please leave a comment if you found this helpful and for content you wish to see. Thank you for reading this Monthly Linux Tip!<\/p>\n"}],"authors":[{"ID":10252,"user_firstname":"Markus","user_lastname":"Walker","nickname":"MWalker","user_nicename":"mwalker","display_name":"Markus Walker","user_email":"MWalker@esri.com","user_url":"","user_registered":"2019-12-03 14:04:26","user_description":"Markus is a Product Engineer on the ArcGIS Enterprise team, where he specializes with Linux architectures.","user_avatar":"<img data-del=\"avatar\" src='https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2021\/04\/31161cb9-c3aa-493e-8ff2-5b3a3ff46361-213x200.jpg' class='avatar pp-user-avatar avatar-96 photo ' height='96' width='96'\/>"}],"related_articles":"","card_image":false,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2021\/04\/ArcGIS-Enterprise-wide.jpg"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.9 (Yoast SEO v25.9) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Monthly Linux Tip: Properly Setting File 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