{"id":23835,"date":"2018-08-29T08:15:01","date_gmt":"2018-08-29T08:15:01","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=23835"},"modified":"2018-08-29T08:15:01","modified_gmt":"2018-08-29T08:15:01","slug":"ambari-groups-users","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/ambari-groups-users\/","title":{"rendered":"Manage Ambari Groups and Users &#8211; Step-by-Step Guide"},"content":{"rendered":"<p>Today, in this <strong>Ambari Tutorial<\/strong>, we will see managing Ambari Groups and Users. Moreover, we will discuss local and LDAP users and groups.<\/p>\n<p><span style=\"font-weight: 400\">It is possible to create and manage users and groups available to Ambari, as an Ambari administrator. Also, possible to import user as well as group information into Ambari from external LDAP systems.<\/span><\/p>\n<p><span style=\"font-weight: 400\"> So, in this article, we will learn about the specific tasks we need to perform while managing Ambari Groups and Users.<\/span><\/p>\n<p>So, let&#8217;s start Ambari Groups and Users Tutorial.<\/p>\n<h2><span style=\"font-weight: 400\">Managing Ambari Groups and Users<\/span><\/h2>\n<p><span style=\"font-weight: 400\">Here is the list of tasks we perform while managing Ambari Groups as well as Users:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Local and LDAP User and Group Types<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Ambari Administrator Privileges<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Create a Local User<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Set User Status<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Set the Ambari Admin Flag<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Change the Password for a Local User<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Delete a Local User<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Create a Local Group<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Managing Group Membership<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Delete a Local Group<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Enable User Home Directory Creation<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-weight: 400\">Local and LDAP User and Group Types<\/span><\/h2>\n<p><span style=\"font-weight: 400\">There are two types of users and groups supported by Ambari. They are local and LDAP. On defining both:<\/span><\/p>\n<h4>a. Local users<\/h4>\n<p>Local users observe their basic account information stored in the Ambari database and also authenticate against it.<\/p>\n<h4>b. LDAP users<\/h4>\n<p><span style=\"font-weight: 400\">Whereas, LDAP users have basic account information which is stored in the Ambari database. Also, it attains basic information which is stored in the Ambari database that also contains group membership information. <\/span><\/p>\n<p><span style=\"font-weight: 400\">Further, these Ambari Groups are imported as well as synchronized from an external LDAP system. We must configure Ambari to authenticate against an external LDAP system before we can use LDAP users and groups with Ambari.<\/span><\/p>\n<p><span style=\"font-weight: 400\"> However, a new Ambari user or group is granted no privileges if it is created locally or by synchronizing against LDAP.<\/span><\/p>\n<h2><span style=\"font-weight: 400\">Ambari Administrator Privileges<\/span><\/h2>\n<p><span style=\"font-weight: 400\">It is possible to create new users, delete users, change user passwords, and also to edit user settings. Moreover, for local and LDAP users, we can control certain privileges. <\/span><\/p>\n<p><span style=\"font-weight: 400\">Here is the list of the privileges which are available or not available to the Ambari administrator for local as well as LDAP Ambari users.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Administrator Privileges:<\/span><br \/>\n<strong>1. Ambari Administrator Privilege: Change password<\/strong><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Local User: Available<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">LDAP User: Not Available<\/span><\/li>\n<\/ul>\n<p><strong>2. Ambari Administrator Privilege: Set Ambari Admin flag<\/strong><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Local User: Available<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">LDAP User: Available<\/span><\/li>\n<\/ul>\n<p><strong>3. Ambari Administrator Privilege: Change group membership<\/strong><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Local User: Available<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">LDAP User: Not Available<\/span><\/li>\n<\/ul>\n<p><strong>4. Ambari Administrator Privilege: Delete user<\/strong><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Local User: Available<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">LDAP User: Not Available<\/span><\/li>\n<\/ul>\n<p><strong>5. Ambari Administrator Privilege: Set active or inactive status<\/strong><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Local User: Available<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">LDAP User: Available<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-weight: 400\">Create a Local User<\/span><\/h2>\n<p><span style=\"font-weight: 400\">In order to create a local user, there are following steps:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">At first browse to Users.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Then click on Create Local User.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\"> Further, enter a unique username.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400\">Make sure all usernames are converted to lowercase.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Now, enter a password, and also confirm it.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\"> Then click Save.<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-weight: 400\">Set User Status<\/span><\/h2>\n<p><span style=\"font-weight: 400\">As par its name it indicates user status. That means it shows whether the user is active or inactive. Active says allowed to log in or Inactive says denied the ability to log in.<\/span><\/p>\n<p><span style=\"font-weight: 400\"> While preserving the user account information related to permissions, we can effectively disable user account access to Ambari just by setting the status flag as active or inactive.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Steps to Set User Status are:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">First, browse to Users.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Then, to modify, click the name of the user.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Further, Click the Status control in order to toggle between Active or Inactive.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Finally, choose OK.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400\">In this way, the change is saved immediately.<\/span><\/p>\n<h2><span style=\"font-weight: 400\">Set the Ambari Admin Flag<\/span><\/h2>\n<p><span style=\"font-weight: 400\">By setting the Ambari Admin flag, we can grant one or more users Ambari administrator privileges. Make sure only an Ambari administrator can set or remove the Ambari Admin flag. <\/span><\/p>\n<p><span style=\"font-weight: 400\">From our own account, we can prevent ourselves from accidentally removing the flag with the help of Ambari.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Steps to the Ambari Admin Flag:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">First, browse to Users.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Then, to modify, click the name of the user.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Further, click the Ambari Admin control.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Ultimately, to remove the Ambari Admin flag, click Yes to set or No.<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-weight: 400\">Change the Password for a Local User<\/span><\/h2>\n<p><span style=\"font-weight: 400\">We can only change local user passwords, not LDAP user passwords. So, the steps are:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">First, browse to Users.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Then click Change password.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Further, \u00a0to confirm that we have required privileges, enter the administrator password.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Then confirm that password after entering a password.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Further click Save.<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-weight: 400\">Delete a Local User<\/span><\/h2>\n<p><span style=\"font-weight: 400\">At the time we delete a local user it removes the user account from the system along with the privileges. Also, set the user status to Inactive, to disable user login.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Basically, to delete a Local User, steps are:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">First, browse to Users.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Then, click Delete User.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Further, do Confirm.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400\">Although, make sure we can reuse the name of a local user which has been deleted.<\/span><\/p>\n<h2><span style=\"font-weight: 400\">Create a Local Group<\/span><\/h2>\n<p><span style=\"font-weight: 400\">To create a Local Group, steps are:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">First, Browse to Groups.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Then just click Create Local Group.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Further, enter a unique group name.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Then click on Save.<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-weight: 400\">Managing Ambari Groups Membership<\/span><\/h2>\n<p><span style=\"font-weight: 400\">We can easily manage the membership of local groups in two ways;<\/span><\/p>\n<div id=\"attachment_26635\" style=\"width: 1210px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/08\/Managing-Ambari-Groups-Membership-01.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-26635\" class=\"wp-image-26635 size-full\" src=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/08\/Managing-Ambari-Groups-Membership-01.jpg\" alt=\"Ambari Groups\" width=\"1200\" height=\"628\" srcset=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/08\/Managing-Ambari-Groups-Membership-01.jpg 1200w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/08\/Managing-Ambari-Groups-Membership-01-150x79.jpg 150w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/08\/Managing-Ambari-Groups-Membership-01-300x157.jpg 300w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/08\/Managing-Ambari-Groups-Membership-01-768x402.jpg 768w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/08\/Managing-Ambari-Groups-Membership-01-1024x536.jpg 1024w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/a><p id=\"caption-attachment-26635\" class=\"wp-caption-text\">Managing Ambari Groups Membership<\/p><\/div>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Add a User to a Group<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Modify Group Membership<\/span><\/li>\n<\/ul>\n<h3><span style=\"font-weight: 400\">a. Add a User to a Group<\/span><\/h3>\n<p><span style=\"font-weight: 400\">In order to add the user to a Group:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">At first, browse to Groups.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Then click a name in the Group Name list.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Further, click on the Local Members control to edit the member list.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Type the first character in an existing username, in the empty space.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Click one, from the list of available usernames.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">And, to save the displayed member, click the check mark.<\/span><\/li>\n<\/ul>\n<h3><span style=\"font-weight: 400\">b. Modify Group Membership<\/span><\/h3>\n<p><span style=\"font-weight: 400\">Now, to modify Group Membership:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">First, browse to Groups.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">To modify, click the name of the group.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Then click on the Local Members control.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Now, to modify the current membership, click in the Local Members text area.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Further, to remove that user, click the x next to the name of a user.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Click the check mark, to save our changes.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400\">Else, click x, to discard our changes.<\/span><\/p>\n<h2><span style=\"font-weight: 400\">Delete a Local Group<\/span><\/h2>\n<p><span style=\"font-weight: 400\">Make sure, while we delete a local group, it also removes associated group membership information along with the privileges.<\/span><br \/>\n<span style=\"font-weight: 400\">Now, steps to delete a Local Group are:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">First, browse to the group.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Then, click Delete Group.<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Also, Confirm.<\/span><\/li>\n<\/ul>\n<h2><span style=\"font-weight: 400\">Enable User Home Directory Creation<\/span><\/h2>\n<p><span style=\"font-weight: 400\">To initialize user accounts, a common requirement is to run Hadoop components is the existence of a unique, \/user\/&lt;username&gt; HDFS home directory. For each user we create, we can enable automated creation of a \/user\/&lt;username&gt; HDFS home directory.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Follow further steps on Ambari Server host, to enable automated user home directory creation:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">By using a command line editor (vi, in this example), edit the ambari-properties file.<\/span><\/li>\n<\/ul>\n<pre class=\"EnlighterJSRAW\">vi \/etc\/ambari-server\/conf\/ambari.properties<\/pre>\n<ul>\n<li>Further, add the following property:<\/li>\n<\/ul>\n<pre class=\"EnlighterJSRAW\">ambari.post.user.creation.hook.enabled=true.<\/pre>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Then add the script path to the ambari properties file:<\/span><\/li>\n<\/ul>\n<pre class=\"EnlighterJSRAW\">ambari.post.user.creation.hook=\/var\/lib\/ambari-server\/resources\/scripts\/post-user-creation-hook.sh<\/pre>\n<ul>\n<li><span style=\"font-weight: 400\">Further, restart the Ambari server.<\/span><\/li>\n<\/ul>\n<pre class=\"EnlighterJSRAW\">ambari-server restart<\/pre>\n<p><span style=\"font-weight: 400\">Although, Ambari executes the script whenever a user is created and also it logs a message each time the script is invoked, after enabling of the post-user creation script is done. <\/span><\/p>\n<p><span style=\"font-weight: 400\">Moreover, an ERROR is logged, if the script has a non-zero exit code, Else an INFO-level message which includes the script path and parameters is logged.<\/span><\/p>\n<p>So, this was all in Ambari Groups and Users. Hope you like our explanation.<\/p>\n<h2><span style=\"font-weight: 400\">Conclusion: Ambari Groups<\/span><\/h2>\n<p>Hence, we have seen the complete step-by-step guide to manage Ambari Groups and Users. Moreover, in this, we discussed local and LDAP users. Still,if you have any doubt regarding Ambari Groups and users,\u00a0 ask in the comment tab. Hope it helps!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Today, in this Ambari Tutorial, we will see managing Ambari Groups and Users. Moreover, we will discuss local and LDAP users and groups. It is possible to create and manage users and groups available&#46;&#46;&#46;<\/p>\n","protected":false},"author":6,"featured_media":26630,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[632,647,651,5176,8122,8129,8363,8503],"class_list":["post-23835","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ambari","tag-ambari-groups","tag-ambari-tutorial","tag-ambari-users","tag-groups-in-ambari","tag-ldap-users-in-ambari","tag-learn-ambari","tag-local-users-in-ambari","tag-manage-ambari-groups-and-users"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Manage Ambari Groups and Users - Step-by-Step Guide - DataFlair<\/title>\n<meta name=\"description\" content=\"Managing Ambari Groups &amp; Users,Local &amp; LDAP User, Ambari Administrator Privileges,list of tasks perform in managing Ambari Groups,Ambari Groups Membership\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/data-flair.training\/blogs\/ambari-groups-users\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Manage Ambari Groups and Users - Step-by-Step Guide - DataFlair\" \/>\n<meta property=\"og:description\" content=\"Managing Ambari Groups &amp; 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