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Network Tools

Menu path: Tools > Network Tools.

The following network tools are available:

• PING
• Netstat
• Process State
• IP Configuration
• NTP Status
• Traceroute
• SMTP
• SSH
• Monit

The ping command sends ICMP echo request to a network hosts. The host can be expressed as an IP address or resolvable site name. The number of pings can be selected as unlimited or limited. Press the START button to start pinging, and STOP to end the pings. The ping command is fully documented at: http://man7.org/linux/man-pages/man8/ping.8.html.

The netstat command is used to show different types of connections to and from A3, interface information, port information, and routing details. The options available are:

• Display routing table information
• Display comprehensive network statistics for each protocol
• Display multicast information
• Display the state of all current socket connections

Press the START button to start netstat, and STOP to prematurely end the display. The netstat command is fully documented at: http://man7.org/linux/man-pages/man8/netstat.8.html.

The ps (process state) command is used to show a snapshot of the processes running on A3. The options available are:

• Display every process on the system using standard syntax
• Display every process on the system using BSD syntax
• Display process tree
• Display information about threads

Press the START button to start ps, and STOP to prematurely end the display. The ps command is fully documented at: http://man7.org/linux/man-pages/man1/ps.1.html.

The IP configuration command (ifconfig and NetworkManager) display the IP address and network mask for every interface as well as DNS configuration information. The options available are:

• Display IP configuration
• Display DNS information

Press the START button to start the tool, and STOP to prematurely end the display. The ifconfig command is fully documented at: http://man7.org/linux/man-pages/man8/ifconfig.8.html and NetworkManager is described at: https://developer.gnome.org/NetworkManager/stable/NetworkManager.html.

The NTP Status tool extracts and displays information related to the Network Time Protocol used for time synchronization between hosts. The options available are:

• Display current time settings
• Display information about the current time sources
• Display parameters about the system's clock performance
• Display the last valid measurement and other NTP-specific information about all NTP sources

Press the START button to start the tool, and STOP to prematurely end the display.

The traceroute command is used display the path and delays of packets across an IP network. The host to trace to can be expressed as an IP address or resolvable site name. Press the START button to start the tool, and STOP to end the operation. The traceroute command is fully documented at: http://man7.org/linux/man-pages/man8/traceroute.8.html.

The SMTP command is used to test A3's email configuration which was defined in Alerting (the SMTP Configuration link at the bottom of the page will bring up that configuration page). Enter a valid email address into the field. Press the START button to start the tool, and STOP to end the operation.

The SSH tool enables secure access to an A3 server. The service is disabled by default and must be enabled for a time period, after which it will be automatically disabled. Login credentials are required as well.

A separate SSH tool can then be used to access the A3 server.

Monit

Monit is a utility for managing and monitoring A3 processes, files, directories and file systems. warning messages are sent to a list of administrators; the Sender, Recipients, and SMTP server must all be in the same domain so as to ensure delivery. Monit conducts automatic maintenance and repair and can execute meaningful actions in error situations. Monit must be individually enabled on each node of a cluster.

Monit is automatically disabled during an upgrade and will need to be manually re-enabled after the upgrade completes. The controls for this feature are shown below.

Field	Usage	Example
Enable Monit	Use the slider to enable or disable the monitoring function.
Recipients	A list of email addresses of administrators who will receive messages concerning events. Each of the email addresses must be in the same domain as the Email server.	admin@company.com
Sender	The email address of the sender in the emails. The email addresses must be in the same domain as the Email server.	A3monitor@company.com
Subject Prefix	Text that will be inserted into the subject line of the message. A particular server name can be helpful in a cluster.	Server1
Configuration(s)	The choices of what will be monitored: A3 - all A3 operation. active-active - active-active cluster related services os-winbind - the OS winbindd process, used when winbind/samba configuration is made outside of A3 os-checks - OS best practices checks	All options
Email server	The SMTP server used to send the messages.	smtp.company.com