When a new NCN is added to the system as a hardware replacement, it might use the default credentials. Contact HPE Cray service to learn what these are.
Use this procedure to verify that the default BMC credentials are set correctly after a replacement NCN is installed, cabled, and powered on.
All NCN BMCs must have credentials set up for ipmitool access.
A new non-compute node (NCN) has been added to the system as a hardware replacement.
Determine if ipmitool access is configured for root on the BMC.
read -sis used to enter the password in order to prevent it from being echoed to the screen or saved in the shell history.
ncn# read -r -s -p "BMC root password: " IPMI_PASSWORD
ncn# export IPMI_PASSWORD
ncn# ipmitool -I lanplus -U root -E -H NCN_NODE-mgmt power status
Error: Unable to establish IPMI v2 / RMCP+ session
Connect to the BMC with the default login credentials. Contact service for the default credentials.
Default credentials for the Administrator user on HPE NCNs can be found on the serial label pull out tab attached to the server. See this page for more information.
read -sis used to enter the password in order to prevent it from being echoed to the screen or saved in the shell history.
ncn# USERNAME=defaultuser
ncn# read -r -s -p "BMC ${USERNAME} password: " IPMI_PASSWORD
ncn# export IPMI_PASSWORD
ncn# ipmitool -I lanplus -U "${USERNAME}" -E -H NCN_NODE-mgmt power status
Example output:
Chassis Power is on
Troubleshooting: Follow the steps below if the credentials are not available:
Troubleshoot Gigabyte NCNs.
Power cycle the replacement NCN.
Boot into Linux.
Use the factory reset command to regain access to the BMC login credentials.
linux# ipmitool raw 0x32 0x66
Troubleshoot HPE NCNs.
Coming soon
Determine if the root user is configured.
In the example below, the root user does not exist yet.
ncn# ipmitool -I lanplus -U "${USERNAME}" -E -H NCN_NODE-mgmt user list 1
Example output:
ID Name Callin Link Auth IPMI Msg Channel Priv Limit
1 false false true ADMINISTRATOR
2 admin false false true ADMINISTRATOR
3 ADMIN false false true ADMINISTRATOR
4 true false false NO ACCESS
5 true false false NO ACCESS
6 true false false NO ACCESS
7 true false false NO ACCESS
8 true false false NO ACCESS
9 true false false NO ACCESS
10 true false false NO ACCESS
11 true false false NO ACCESS
12 true false false NO ACCESS
13 true false false NO ACCESS
14 true false false NO ACCESS
15 true false false NO ACCESS
16 true false false NO ACCESS
Add the new root user.
Enable the creation of new credentials.
ncn# ipmitool -I lanplus -U "${USERNAME}" -E -H NCN_NODE-mgmt user enable 4
Set the new username to root.
ncn# ipmitool -I lanplus -U "${USERNAME}" -E -H NCN_NODE-mgmt user set name 4 root
Set the new password.
ncn# ipmitool -I lanplus -U "${USERNAME}" -E -H NCN_NODE-mgmt user set password 4 <BMC_root_password>
Grant user privileges to the new credentials.
ncn# ipmitool -I lanplus -U "${USERNAME}" -E -H NCN_NODE-mgmt user priv 4 4 1
Enable messaging for the identified slot and set the privilege level for that slot when it is accessed over LAN.
ncn# ipmitool -I lanplus -U "${USERNAME}" -E -H NCN_NODE-mgmt channel setaccess 1 4 callin=on ipmi=on link=on
Enable access to the serial over LAN (SOL) payload.
ncn# ipmitool -I lanplus -U "${USERNAME}" -E -H NCN_NODE-mgmt sol payload enable 1 4
Verify that the root credentials have been configured.
ncn# ipmitool -I lanplus -U "${USERNAME}" -E -H NCN_NODE-mgmt user list 1
Example output:
ID Name Callin Link Auth IPMI Msg Channel Priv Limit
1 false false true ADMINISTRATOR
2 admin false false true ADMINISTRATOR
3 ADMIN false false true ADMINISTRATOR
4 root true true true ADMINISTRATOR
5 true false false NO ACCESS
6 true false false NO ACCESS
7 true false false NO ACCESS
8 true false false NO ACCESS
9 true false false NO ACCESS
10 true false false NO ACCESS
11 true false false NO ACCESS
12 true false false NO ACCESS
13 true false false NO ACCESS
14 true false false NO ACCESS
15 true false false NO ACCESS
16 true false false NO ACCESS
Confirm that the new credentials can be used with ipmitool.
The new credentials work if the command succeeds and generates output similar to the example below.
ncn# read -r -s -p "BMC root password: " IPMI_PASSWORD
ncn# export IPMI_PASSWORD
ncn# ipmitool -I lanplus -U root -E -H NCN_NODE-mgmt user list 1
Example output:
ID Name Callin Link Auth IPMI Msg Channel Priv Limit
1 false false true ADMINISTRATOR
2 admin false false true ADMINISTRATOR
3 ADMIN false false true ADMINISTRATOR
4 root true true true ADMINISTRATOR
5 true false false NO ACCESS
6 true false false NO ACCESS
7 true false false NO ACCESS
8 true false false NO ACCESS
9 true false false NO ACCESS
10 true false false NO ACCESS
11 true false false NO ACCESS
12 true false false NO ACCESS
13 true false false NO ACCESS
14 true false false NO ACCESS
15 true false false NO ACCESS
16 true false false NO ACCESS
Verify that the time is set correctly in the BIOS
Please refer to the Ensure Time Is Accurate Before Deploying NCNs procedure.