Thank you for the effective answer! To reboot, I thik executing the command "system node reboot". However, I cannot connect to Ontap.
I tried the following (1) and (2), but I can't connect to either. (1) I connected to the e0m port and specified the serial port of 115200 using teraterm, but I get an error saying "com1 not found". (2) When I connect to the IP address to access the Ontap browser with teraterm,
the user name and password screen was displayed.
Entering the ID = "admin" and password = 'password set in the Ontap browser'.
Then I was asked for the password of the diag user. I don't know the password, so it ends there.
To use the serial port, you should connect your cable to the wrench signed port (not e0M).
115200 is correct.
If you do not know the admin user password, you should reset it. You will need to reboot the controller (you can do it physically). During boot, there's a moment you hit ctrl+c and you get to the boot menu.
From there you can reset admin password, or clean and initialize all disks (new install).
Thanks to your advice, I was able to make a serial connection and reset Ontap. But when I set the cluster management IP and the node management IP again in the Ontap browser and commit, the following message was displayed.
"Failed to add to the cluster with reason: Failed to start cluster join on node: xx.xx.xx.xx: RPC: Couldn't make connection [from mgwd on node "XXXX-01" (VSID: -3) to mgwd at xx.xx.xx.xx]"
When I checked it with a serial connection, it seems that the condition is not particularly problematic, but I am not sure if it is okay to proceed. If you have anything else to look at, please give me some advice.
Node00::> cluster show Node Health Eligibility --------------------- ------- ------------ Node-01 true true Node-02 true true