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Options in the User Administration section of the Admin tab allow an administrative user to access a list of connected users or to display a message to all connected users (see Figure 4.37).
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Click the Show logged in users button to display the Logged in users dialog (see Figure 4.38).
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When you’re finished reviewing the list, use the X in the upper-right corner of the popup to close the dialog.
Provide a message in the Message field (shown in Figure 4.39) and click the Display Message button to add an announcement to the top of the user console. A message may include HTML tags to control the displayed format, and will wrap if the message exceeds the width of the screen.
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Use the Remove Message button to remove the banner. Please note that the wall banner content is stored in the console database, and will persist after a server restart; you must use the Remove Message button to remove a banner.
A table with detailed information about each user is displayed in the User Administration section of the Admin tab (see Figure 4.41).
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If the user has administrative access to the console, the ADMIN column displays a blue check mark.
The date and time of the last login is displayed in the LAST LOGIN column. The time zone displayed is based on the time zone used by the operating system.
The LOGINS column displays a cumulative total of the number of times that the user has logged in.
Click the Add User button to access the Add User dialog (see Figure 4.42) and create a new user account for the current console.
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Use the Login field to provide the identifier that the user will provide when logging in to the console; each identifier must be unique.
Check the box next to Enabled if the user should be allowed to log in to the console.
Confirm the password in the Verify Password field.
Select a previously defined Amazon role ARN from the drop-down list in the Role field, or copy a different role ARN into the field.
If you copy an Amazon role ARN into the Role field, a popup will open, prompting you for the AWS ExternalId associated with the user. To locate the ExternalId, connect to the Amazon management console, and navigate to the IAM Roles page. Select the role name from the list, and then click Trust Relationships tab. The ExternalId associated with the Role ARN is displayed in the Conditions section of the Summary page.
Click the Edit User button to open a dialog that allows you to modify user properties for the user that is currently highlighted in the user table (see Figure 4.43).
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If the backing host of your Ark console is Amazon AWS, you can use features on the Admin tab to delete objects that belong to a user, and the user account. Highlight a user name in the User Administration table, and click:
The Delete Clusters button to delete all clusters that belong to the selected user.
The Delete Snapshots button to delete any cluster backups that belong to the selected user.
The Delete Keypair button to delete the SSH keypair associated with the selected user account.
After deleting the objects owned by a user, you can use the Delete User button to remove the user account. To delete a user, highlight the name of a user in the user table, and click the Delete User button.
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The Ark console will open a popup, asking you to confirm that you wish to delete the selected user (see Figure 4.44). Click Delete to remove the user account, or Cancel to exit the popup without deleting the account.
Use the Download button in the Download Console Logs panel of the Admin tab to download a zip file that contains the server logs for the underlying application server. You can confirm changes to server status or verify server activity by reviewing the application server log file (see Figure 4.45).
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When the server.log file fills, EDB Ark attaches a unique identifier to the file name, and rotates the file into storage. You can use the Linux tail utility (shown in Figure 4.46) to display the most recent entries in any of the server logs. For example, to review the last 10 lines in the server log file, connect to the console host with ssh and enter:
tail file_name
Where file_name specifies the complete path to the log file.
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You can include the -F option to instruct the tail utility to display the last 10 lines of the log file, and new log file entries as they are added to the file:
tail -F file_name
The tail utility will continue to display new log file entries if the server log rotates to a new file. Enter Ctrl-C to exit tail and return to the command prompt.
To review the tail command options, enter the command:


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