It is recommended to have a minimum system spec of 4vCPU 16GB RAM 256 GB SSD or better for a validator node. Lower specs will result in issues.
Before setting up your validator node, make sure you've already gone through the Full Node Setup guide.
NOTE: it is not required to create a validator on Akash testnets unless specified in a challenge or otherwise. The akash team runs a centralized validator set to enable for easy and consistent testnet operations for developers trying out the platform for the first time.
Validators are responsible for committing new blocks to the blockchain through voting. A validator's stake is slashed if they become unavailable or sign blocks at the same height. Please read about Sentry Node Architecture to learn how to protect your node from DDOS attacks and to ensure high-availability on mainnet.
akashvalconspub can be used to create a new validator by staking tokens. You can find your validator pubkey by running:
akash tendermint show-validator
The file that stores this private key lives at
~/.akash/config/priv_validator_key.json. To create your validator, just use the following command:
akash tx staking create-validator \--amount=1000000uakt \--pubkey="$(akash tendermint show-validator)" \--moniker="$AKASH_MONIKER" \--chain-id="$AKASH_CHAIN_ID" \--commission-rate="0.10" \--commission-max-rate="0.20" \--commission-max-change-rate="0.01" \--min-self-delegation="1" \--gas="auto" \--gas-prices="0.025uakt" \--from="$AKASH_KEY_NAME"
::: tip When specifying commission parameters, the
commission-max-change-rate is used to measure % point change over the
commission-rate. E.g. 1% to 2% is a 100% rate increase, but only 1 percentage point. :::
min-self-delegation is a stritly positive integer that represents the minimum amount of self-delegated voting power your validator must always have. A
min-self-delegation of 1 means your validator will never have a self-delegation lower than
You can confirm that you are in the validator set by using a third party explorer for the testnet you are joining.
You can edit your validator's public description. This info is to identify your validator, and will be relied on by delegators to decide which validators to stake to. Make sure to provide input for every flag below. If a flag is not included in the command the field will default to empty (
--moniker defaults to the machine name) if the field has never been set or remain the same if it has been set in the past.
$AKASH_KEY_NAME specifies the key for the validator which you are editing. If you choose to not include certain flags, remember that the
--from flag must be included to identify the validator to update.
--identity can be used as to verify identity with systems like Keybase or UPort. When using with Keybase
--identity should be populated with a 16-digit string that is generated with a keybase.io account. It's a cryptographically secure method of verifying your identity across multiple online networks. The Keybase API allows explorers to retrieve your Keybase avatar. This is how you can add a logo to your validator profile.
akash tx staking edit-validator--moniker="$AKASH_MONIKER" \--website="https://akash.network" \--identity=6A0D65E29A4CBC8E \--details="The SUPERCLOUD IS HERE!" \--chain-id="$AKASH_CHAIN_ID" \--gas="auto" \--gas-prices="0.025uakt" \--from="$AKASH_KEY_NAME" \--commission-rate="0.10"
commission-rate value must adhere to the following invariants:
Must be between 0 and the validator's
Must not exceed the validator's
commission-max-change-rate which is maximum
% point change rate per day. In other words, a validator can only change
its commission once per day and within
View the validator's information with this command:
akash query staking validator $AKASH_VALIDATOR_ADDRESS
In order to keep track of a validator's signatures in the past you can do so by using the
akash query slashing signing-info $AKASH_VALIDATOR_PUBKEY \--chain-id="$AKASH_CHAIN_ID"
When a validator is "jailed" for downtime, you must submit an
Unjail transaction from the operator account in order to be able to get block proposer rewards again (depends on the zone fee distribution).
akash tx slashing unjail \--from="$AKASH_KEY_NAME" \--chain-id="$AKASH_CHAIN_ID"
Your validator is active if the following command returns anything:
akash query tendermint-validator-set | grep "$(akash tendermint show-validator)"
You should now see your validator in one of the Akash Testnet explorers. You are looking for the
address in the
When attempting to perform routine maintenance or planning for an upcoming coordinated upgrade, it can be useful to have your validator systematically and gracefully halt. You can achieve this by either setting the
halt-height to the height at which you want your node to shutdown or by passing the
--halt-height flag to
akash. The node will shutdown with a zero exit code at that given height after committing the block.
Your validator has become jailed. Validators get jailed, i.e. get removed from the active validator set, if they do not vote on
500 of the last
10000 blocks, or if they double sign.
If you got jailed for downtime, you can get your voting power back to your validator. First, if
akash is not running, start it up again. If you are running
systemd this will be different:
Wait for your full node to catch up to the latest block. Then, you can unjail your validator
Lastly, check your validator again to see if your voting power is back.
You may notice that your voting power is less than it used to be. That's because you got slashed for downtime!
The default number of files Linux can open (per-process) is
akash is known to open more than
1024 files. This causes the process to crash. A quick fix is to run
ulimit -n 4096 (increase the number of open files allowed) and then restart the process with
akash start. If you are using
systemd or another process manager to launch
akash this may require some configuration at that level. See the
systemd configuration doc for details on how to configure
systemd to aleviate this issue.