The 3-DNS Controller provides utilities for monitoring and administration. You can perform configuration tasks, and monitor system statistics for all components of the 3-DNS Controller.
The 3-DNS Controller provides the following configuration, monitoring, and administration utilities:
You can use the 3-DNS Maintenance menu to manually configure and monitor the 3-DNS Controller. However, if you work with either the browser-based Configuration utility or the NameSurfer application, you cannot use the 3-DNS Maintenance menu.
You can use the 3-DNS Maintenance menu to perform the following types of manual configuration tasks:
Figure 7.1 shows the 3-DNS Maintenance menu.
3 D N S(®) Maintenance Menu
Generate RSA Authentication
Generate and Copy iQuery Encryption Key
Check versions of named, BIG-IP kernel and needed big3d
Edit big3d matrix
Install and Start big3d
Edit BIND Configuration
Edit 3-DNS Configuration
Synchronize Metrics Data
Reconfigure 3-DNS Web Administration
Restart 3-DNS Administration
Change/Add Users for 3-DNS Web Administration
Dump and List named Database
Checkpoint synced files
Configure connection to NTP time server
Enter 'q' to Quit
Each command is described in the following sections.
We recommend that you use NameSurfer to handle BIND Configuration, and that you use the Configuration utility to configure wide IPs. However, if you choose to manually edit BIND and the 3-DNS Controller configuration files, use the following commands.
The Edit BIND Configuration command opens the named.conf file for editing.
The Edit 3-DNS Configuration command runs the edit_wideip script, which performs the following tasks:
Use the following command to view various 3-DNS Controller statistics:
The Dump and List named Database command corresponds to the 3dprint script, which lets you view these statistics screens on the command line:
To view more statistics information, click the Expand button (+) next to Statistics on the navigation pane in the Configuration utility.
You can use the following commands to work with the big3d agent, which collects information about paths between a data center and a specific LDNS server.
The Check versions of named, BIG-IP kernel and needed big3d command runs the big3d_version script. This script displays version numbers for all BIG-IP Controllers known to the 3-DNS Controller, and the version numbers of the big3d agent and named utility running on each BIG-IP Controller.
The Edit big3d matrix command opens an editable file that lists version numbers for all BIG-IP Controllers known to the 3-DNS Controller, and the version numbers of the big3d agent and named utility running on each BIG-IP Controller.
You do not need to edit this file unless a new BIG-IP kernel or a named version creates a conflict. If this happens, you need to place a new version of the big3d agent on all BIG-IP Controllers.
The Install and Start big3d command uses the matrix file to determine which version of the big3d agent to transfer.
The Install and Start big3d command runs the big3d_install script, which installs and starts the appropriate version of the big3d agent on each BIG-IP Controller in the network.
The Check big3d command runs the big3d_check script, which verifies that each BIG-IP Controller is running the big3d agent.
The Restart big3d command runs the big3d_restart script, which stops and restarts the big3d agent on each BIG-IP Controller.
You can use the following commands to copy metrics data to a new 3-DNS Controller, to archive synchronized files, or to retrieve an archive.
The Synchronize Metrics Data command runs the 3dns_sync_metrics script, which prompts you to copy metrics data from a remote 3-DNS Controller to the local 3-DNS Controller.
You should use this command only when you are configuring a new 3-DNS Controller.
The Checkpoint synced files command runs the syncd_checkpoint script, which creates a checkpoint file. A checkpoint file is a compressed tar file that contains an archive of the files that are synchronized.
For more information, see syncd_checkpoint, on page B-9 .
The Rollback checkpoint command runs the syncd_rollback script, which unrolls a checkpoint file. The checkpoint file contains the last saved copy of all files synchronized by syncd.
For more information, see syncd_rollback, on page B-10 .
You can use the following commands to address security issues for your network setup.
The Generate RSA Authentication command runs the 3dns_auth script, which configures ssh access to any new 3-DNS Controller or BIG-IP Controller that is added to a network.
The 3dns_auth script generates a password authentication by setting the RSA Authentication parameter to yes in /etc/sshd_config.conf and copying the ssh key to each 3-DNS Controller and BIG-IP Controller. When prompted for an RSA passphrase, press the Enter key instead of typing a password.
For more information, see 3dns_auth, on page B-3 .
The Generate and Copy Encryption iQuery key command runs the install_key script, which then runs the F5makekey script. F5makekey generates a seed key for encrypting communications between the 3-DNS Controller and BIG-IP Controller.
For more information, see install_key and F5makekey, on page B-9 .
You can use the following commands to configure the 3-DNS web server.
The Reconfigure 3-DNS Web Administration command runs the 3dns_web_config script, which lets you make configuration changes to the 3-DNS web server.
The Restart 3-DNS Administration command runs the 3dns_admin_start script, which restarts the 3-DNS web server.
The Change/Add Users for 3-DNS Web Administration command runs the 3dns_web_passwd script, which lets you provide restricted or administrative access to the 3-DNS web server for selected users only, and assigns passwords for those users. Users with restricted access have access to the statistics area only. Users with administrative access have access to all areas of the 3-DNS web server.
You can use the following commands to work with syncd, the synchronization daemon that runs on all 3-DNS Controllers. The function of syncd is to update and synchronize all 3-DNS Controller configuration files.
The Stop syncd command runs the syncd_stop script, which stops the syncd daemon, if it is running.
The Restart syncd command runs the syncd_start script, which restarts the syncd daemon if it is already running, or starts it if it is not.
The 3-DNS Controllers in a network must have their time synchronized to within a few seconds of each other. If you do not synchronize the controller, it is done by default through iQuery messages exchanged between 3-DNS Controllers. However, the following command allows much more precise time synchronization between the 3-DNS Controllers.
The Configure Connection to NTP Time Server command allows the 3-DNS Controller to synchronize its time to a public NTP (Network Time Protocol) server on the Internet. To simplify the task of the choosing the best time server, this command has a list of regional time servers built into it. A 3-DNS Controller is not required to have NTP configured; depending on the network configuration, it may not be possible to configure NTP (for example, if the 3-DNS Controller is behind a firewall and the firewall does not pass NTP packets).
You can use the following command to have NameSurfer handle DNS zone file management on the 3-DNS Controller.
The Configure NameSurfer command makes NameSurfer the master on the 3-DNS Controller, and NameSurfer then handles the zone file management, dealing with all changes and updates to the zone files. You can access the NameSurfer application in the Configuration utility by clicking NameSurfer on the navigation pane. (Note that if you do not set NameSurfer to be the master for your wide IP zones, you cannot use the Configuration utility. Instead, you must manually configure all 3-DNS Controller settings.)
The First-Time Boot utility prompts you to define a password that allows remote access to the 3-DNS Controller, and also prompts you to define a password for the 3-DNS Web server. You can change these passwords at any time.
You can create new users for the 3-DNS web server, change a password for an existing user, or recreate the password file altogether, without actually going through the 3-DNS web server configuration process.
The following command creates a new user ID, or changes the password for an existing user ID. In place of the <username> parameter, type the user ID for which you want to create a password:
/var/f5/httpd/bin/htpasswd /var/f5/httpd/basicauth/users \
Once you enter the command, you are prompted to type the new password for the named user.
The following command recreates the 3-DNS web server password file, and defines one new user ID and password. In place of the <username> parameter, type the user ID that you want to create:
/var/f5/httpd/bin/htpasswd -c /var/f5/httpd/basicauth/users \
Once you enter the command, you are prompted to type the new password for the named user.
Using the Configuration utility, you can view current statistics about the following objects in the configuration: