yet another tech blog
xrandr alone will give you available resolutions for each display attached
xrandr
Some examples:
xrandr –output eDP –mode 1280×720
xrandr –output HDMI1 –mode 1280×720
xrandr –output -eDP1 –mode 1280×720
xrandr –output HDMI2 –mode 1280×1024
Dual-monitor setup where the desktop is extended to the right of the main PC monitor
xrandr –output HDMI1 –mode 1920×1200 –right-of eDP1
netsh interface ip delete arpcache
bmc -H 10.1.1.64 -U jonas -P jonas allinfo
bmc -H 10.1.1.64 -U jonas -P jonas pecagent_health
bmc -H 10.1.1.64 -U jonas -P jonas bmc_hostname
bmc -H 10.1.1.64 -U jonas -P jonas bmc_hostname get
bmc -H 10.1.1.64 -U jonas -P jonas psus_required
bmc -H 10.1.1.64 -U jonas -P jonas psus_redundant
bmc -H 10.1.1.64 -U jonas -P jonas psus_seen
bmc -H 10.1.1.64 -U jonas -P jonas power_draw_node
bmc -H 10.1.1.64 -U jonas -P jonas power_draw_chassis
bmc -H 10.1.1.62 -U jonas -P jonas platform
Enable SOL with Racadm (or via the web interface – whichever):
racadm -r 10.2.2.2 -u root -p calvin config -g cfgIpmiLan -o cfgIpmiLanEnable 1
NOTE: for the ipmitool commands, create a new user with SOL permission first if root/root or root/calvin doesn’t work. This seems to be the case with the C series servers.
Connect using ipmitool:
jonas@erebus:~$ ipmitool -I lanplus -U jonas -P jonas -H 10.2.2.2 sol activate
jonas@erebus:~$
Terminate session:
▒~. [terminated ipmitool] (yes, termninate with “~.”)
jonas@erebus:~$
An iDRAC can run out of available sessions and hence refuse any new connections over the web interface. This happens if the admin logs on multiple times and doesn’t log out (just closing the window). Luckily this is easy to remedy:
SSH to iDRAC of server:
ssh root@10.6.26.222
Get session list:
racadm getssninfo
SSNID Type User IP Address Login Date/Time
—————————————————————————
6 GUI root 10.3.2.147 12/06/2013 09:34:49
7 GUI root 10.3.2.147 12/06/2013 09:35:25
11 GUI root 10.3.2.147 12/06/2013 10:43:57
12 SSH root 10.3.2.155 12/16/2013 12:46:31
Kill the session we want to get rid of:
racadm closessn -i 6
Session 6 closed successfully.