Dealing with Dell iDRACs is always fun. Here are some notes on how to use it.

Tasks[edit | edit source]

Access the serial console[edit | edit source]

Access RAC via SSH, then run:

$ console com2

Hit Ctrl - \ to exit.

Restart the server[edit | edit source]

$ racadm serveraction powercycle

Other actions include:

  • powerdown to halt system
  • powerup to start the system
  • powercycle to stop and start the system
  • powerstatus to display the system status (either ON or OFF)
  • hardreset to force a power reset

Restart the remote access controller[edit | edit source]

$ racadm racreset soft

You may also choose to use a hard reset or force the reset with -f. Eg:

$ racadm racreset hard -f

Troubleshooting[edit | edit source]

Older iDRACs require Java. That's always fun.

Network connection has dropped[edit | edit source]

iDRAC Network connection has been dropped
iDRAC Network connection has been dropped

Install icedtea-web or the official JDK from oracle. Because the iDRAC uses RC4 for SSL/TLS, you will get an error "The viewer has terminated. Reason: The network connection has dropped." if you try to connect. To work around this, you will need to edit /usr/java/jdk1.8.0_202-amd64/jre/lib/security/java.security (change the java version as required) and edit jdk.tls.disabledAlgorithms to not include RC4. Save the file and try launching the java web start applet again.

644 #jdk.tls.disabledAlgorithms=SSLv3, RC4, DES, MD5withRSA, DH keySize < 1024, \
645 #    EC keySize < 224, 3DES_EDE_CBC, anon, NULL
646 jdk.tls.disabledAlgorithms=SSLv3, DES, MD5withRSA, DH keySize < 1024, \
647     EC keySize < 224, 3DES_EDE_CBC, anon, NULL
Java application blocked
Java application blocked

Java application blocked[edit | edit source]

On an even older Dell iDRAC (version 2.2), when trying to launch the java web start application, I got an "Application Blocked by Java Security".


To fix this, you need to open the Java security control panel by running /usr/java/jdk1.8.0_202-amd64/jre/bin/ControlPanel, go to the "Security" tab, and then click 'Edit Site List...'. Add your iDRAC's address into the exception list. For example, http://ipmi-nn1:80 or https://ipmi-nn1:443.

Duplicate exists[edit | edit source]

killall java and try again.