Dell Drac 5 User Manual

							Recovering and Troubleshooting the DRAC 5271
Recovering and Troubleshooting 
the DRAC 5
This section explains how to perform tasks related to recovering and 
troubleshooting a crashed DRAC 5.
You can use one of the following tools to troubleshoot your DRAC 5:

 Diagnostic Console

 racdump
 coredump
Using the RAC Log 
The RAC Log is a persistent log maintained in the DRAC 5 firmware. The 
log contains a list of user actions (such as log in, log out, and security policy 
changes) and alerts issued by the DRAC 5. The oldest entries are overwritten 
when the log becomes full. 
To access the RAC Log from the DRAC 5 user interface (UI):
1
In the System tree, click Remote Access.
2Click the Logs tab and then click RAC Log.
The RAC Log provides the information listed in Table 16-1. 
						

							272Recovering and Troubleshooting the DRAC 5
Using the RAC Log Page Buttons
The RAC Log page provides the buttons listed in Table 16-2.
Table 16-1. RAC Log Page Information
Field Description
Date/ TimeThe date and time (for example, Dec 19 16:55:47). 
When the DRAC 5 initially starts and is unable to communicate 
with the managed system, the time will be displayed as System 
Boot. 
SourceThe interface that caused the event.
DescriptionA brief description of the event and the user name that logged into 
the DRAC 5.
Table 16-2. RAC Log Buttons
Button Action
PrintPrints the RAC Log page. 
Clear LogClears the RAC Log entries.
NOTE: The Clear Log button only appears if you have Clear Logs 
permission.
Save As Opens a pop-up window that enables you to save the RAC Log 
to a directory of your choice. 
NOTE: If you are using Internet Explorer and encounter a problem 
when saving, be sure to download the Cumulative Security Update 
for Internet Explorer, located on the Microsoft Support website at 
support.microsoft.com.
RefreshReloads the RAC Log page. 
						

							Recovering and Troubleshooting the DRAC 5273
Using the Command Line
Use the getraclog command to view the RAC log entries.
racadm getraclog -i 
The getraclog -i command displays the number of entries in the DRAC 5 log.
racadm getraclog [options]
 NOTE: For more information, see getraclog.
You can use the clrraclog command to clear all entries from the RAC log.
racadm clrraclog
Using the Diagnostic Console
The DRAC 5 provides a standard set of network diagnostic tools (see 
Table 16-3) that are similar to the tools included with Microsoft® Windows® 
or Linux-based systems. Using the DRAC 5 Web-based interface, you can 
access the network debugging tools.
To access the Diagnostic Console page:
1
In the System tree, click Remote Access.
2Click the Diagnostics tab.
Table 16-3 describes the options that are available on the Diagnostic Console 
page. Type a command and click Submit. The debugging results appear in the 
Diagnostic Console page. 
To refresh the Diagnostic Console page, click Refresh. To execute another 
command, click Go Back to Diagnostics Page.
Table 16-3. Diagnostic Commands
Command Description
arpDisplays the contents of the Address Resolution Protocol 
(ARP) table. ARP entries may not be added or deleted. 
ifconfigDisplays the contents of the network interface table. 
						

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Using the Trace Log
The internal DRAC 5 Trace Log is used by administrators to debug DRAC 5 
alerting and networking issues. 
To access the Trace Log from the DRAC 5 Web-based interface:
1
In the System tree, click Remote Access.
2Click the Diagnostics tab.
3Ty p e  t h e  gettracelog command, or the racadm gettracelog command in 
the Command field.
 NOTE: You can use this command from the command line interface also. See 
gettracelog for more information.
The Trace Log tracks the following information:
 DHCP — Traces packets sent to and received from a DHCP server.
 IP — Traces IP packets sent and received. 
The trace log may also contain DRAC 5 firmware-specific error codes that are 
related to the internal DRAC 5 firmware, not the managed system’s operating 
system. 
 NOTE: The DRAC 5 will not echo an ICMP (ping) with a packet size larger than 
1500 bytes. netstatPrints the content of the routing table. If the optional 
interface number is provided in the text field to the right of 
the netstat option, then netstat prints additional information 
regarding the traffic across the interface, buffer usage, and 
other network interface information.
ping Verifies that the destination IP address is reachable from the 
DRAC 5 with the current routing-table contents. A 
destination IP address must be entered in the field to the right 
of this option. An Internet control message protocol (ICMP) 
echo packet is sent to the destination IP address based on the 
current routing-table contents. 
gettracelogDisplays the DRAC 5 trace log. See gettracelog for more 
information. Table 16-3. Diagnostic Commands (continued)
Command Description 
						

							Recovering and Troubleshooting the DRAC 5275
Using the racdump
The racadm racdump command provides a single command to get dump, 
status, and general DRAC 5 board information.
 NOTE: This command is available only on Telnet and SSH interfaces. For more 
inform, see the racdump command.
Using the coredump
The racadm coredump command displays detailed information related to 
any recent critical issues that have occurred with the RAC. The coredump 
information can be used to diagnose these critical issues.
If available, the coredump information is persistent across RAC power cycles 
and will remain available until either of the following conditions occur:
 The coredump information is cleared using the coredumpdelete 
subcommand.
 Another critical condition occurs on the RAC. In this case, the coredump 
information will be relative to the last critical error that occurred.
The racadm coredumpdelete command can be used to clear any 
currently resident coredump data stored in the RAC.
See the coredump and coredumpdelete for more information. 
						

							276Recovering and Troubleshooting the DRAC 5 
						

							Sensors277
Sensors
Hardware sensors or probes help you to monitor the systems on your network 
in a more efficient way by enabling you to take appropriate actions to prevent 
disasters, such as system instability or damage.
You can use the DRAC 5 to monitor hardware sensor for batteries, fan probes, 
chassis intrusion, power supplies, power consumed, temperature, and 
voltages.
Battery Probes
The Battery probes provide information about the system board CMOS and 
storage RAM on motherboard (ROMB) batteries.
 NOTE: The Storage ROMB battery settings are available only if the system has a 
ROMB.
Fan Probes
The fan probe sensor provides information on:
 fan redundancy — the ability of the secondary fan to replace the primary 
fan if the primary fan fails to dissipate heat at a pre-set speed.
 fan probe list — provides information on the fan speed for all fans in the 
system.
Chassis Intrusion Probes
The chassis intrusion probes provides status of the chassis, whether chassis is 
open or closed. 
						

							278Sensors
Power Supplies Probes
The power supplies probes provides information on:
 status of the power supplies, whether within the normal threshold value or 
has crossed threshold value.
 NOTE: You can set threshold values only from the Dell™ OpenManage™ 
Server Administrator. See the Dell OpenManage Server Administrator User’s 
Guide for more information.
 power supply redundancy, that is, the ability of the redundant power 
supply to replace the primary power supply if the primary power supply 
fails.
 NOTE: If there is only one power supply in the system, the Power Supply 
Redundancy section will not display.
Hardware Performance Probes
The hardware performance sensor provides status of the performance of your 
central processing unit (CPU), whether degraded or normal. The status of the 
hardware performance sensors is degraded when the CPU is in throttled state.
Power Monitoring Probes
Power monitoring provides information about the real time consumption of 
power, in watts and amperes. This information is provided to the DRAC 5 
through the baseboard management controller (BMC) firmware sensors.
 NOTE: This feature is supported only on limited Dell PowerEdge™ x9xx and xx0x 
systems.
You can also view a graphical representation of the consumption of power for 
the last one hour, day, or week from the current time set in the DRAC.
Temperature Probes
The temperature sensor provides information about the system board 
ambient temperature. The temperature probes indicate whether the status of 
the probes is within the pre-set warning and critical threshold value. 
						

							Sensors279
Voltage Probes
The following are typical voltage probes. Your system may have these and/or 
others present. 
 CPU [n] VCORE 
 System Board 0.9V PG 
 System Board 1.5V ESB2 PG 
 System Board 1.5V PG 
 System Board 1.8V PG 
 System Board 3.3V PG 
 System Board 5V PG 
 System Board Backplane PG 
 System Board CPU VTT 
 System Board Linear PG
The voltage probes indicate whether the status of the probes is within the 
pre-set warning and critical threshold values. 
						

							280Sensors