Adjust Node.Counter for KES
With Vasil upgrade your node.counter for KES must be just one count higher than the last OpCertC value for your last block. If this value needs to be adjusted, this guide will show you how.
UPDATED: 11/26/24
Welcome!
There are two method you can use to Rollback your node.counter. Please review and choose the method you prefer.
Step 1 - Look up Operational Certificate Numbers
When it's time to update your KES you can run the following command on your block producer to confirm you have the correct Operational Certificate Numbers
cardano-cli conway query kes-period-info --mainnet \
--op-cert-file $NODE_HOME/node.cert
Results should look similar to the following:
✓ The operational certificate counter agrees with the node protocol state counter
✓ Operational certificate's kes period is within the correct KES period interval
{
"qKesNodeStateOperationalCertificateNumber": 4,
"qKesCurrentKesPeriod": 505,
"qKesOnDiskOperationalCertificateNumber": 5,
"qKesRemainingSlotsInKesPeriod": 6832926,
"qKesMaxKESEvolutions": 62,
"qKesKesKeyExpiry": "2022-09-22T21:44:51Z",
"qKesEndKesInterval": 558,
"qKesStartKesInterval": 496,
"qKesSlotsPerKesPeriod": 129600
}
This line is the counter number of your current Operational Certificate: "qKesOnDiskOperationalCertificateNumber": 5,
If these number are NOT the same, as for the example above NodeState=4 and OnDisk=5 then you need to rollback your counter. In this case the node counter would need to be rolled back from 5 to 4 If, for example, NodeState and OnDisk =4, then you are all set and can proceed to renewing your KES following the normal procedure here.
✅Also If you have never minted a block since you started your pool, then you will need to rollback your counter back to 0
Step 2 - Check current value of your node.counter
⚠️ON AIR GAPPED MACHINE:
navigate to where your node.counter file is. 📁In this example it's located in our home directory in a folder called: cold-keys. So we run this command to output node.counter information.
cat $HOME/cold-keys/node.counter
✍️Take note that "Next certificate issue number: x"
For example, "qKesNodeStateOperationalCertificateNumber": 4, So our node.counter should read "Next certificate issue number: 5"
If your "Next certificate issue number" is one higher you are all set and can continue to normal renew KES process found here.
⚠️Only if it's not one higher should you proceed to the next step
Step 3 - KES Rollback
If you need to adjust your node.counter navigate to your node.counter file on your Air Gapped Machine.
In this example it is located in our home directory in a folder called: cold-keys. If your file is not located there please adjust file path.
🛑 If you have not backed up your node.counter file now is a good time to do that before you proceed.
⚠️ON AIR GAPPED MACHINE: Since our "qKesNodeStateOperationalCertificateNumber": 4, we want it to be "4+1". Please replace 4 with your "qKesNodeStateOperationalCertificateNumber": value. Edit node.counter using following commands.
cd $HOME/cold-keys/
cardano-cli conway node new-counter \
--cold-verification-key-file node.vkey \
--counter-value $((4 + 1)) \
--operational-certificate-issue-counter-file node.counter
Final Step
Now that your node.counter is adjusted you may proceed to renew your KES following the normal procedure here.
Congratulations you did it!
Contributors
Thanks to the following pools for helping to put together these guides. Please consider delegating to their pools to support them. Are you a pool? Consider buying them a coffee
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