b363e0172e
## Description
This was causing sim failures like:
```
exporting genesis...
2022-05-25T10:36:38-05:00 INFO asserting crisis invariants inv=0/12 module=x/crisis name=gov/module-account
2022-05-25T10:36:38-05:00 INFO asserting crisis invariants inv=1/12 module=x/crisis name=bank/nonnegative-outstanding
2022-05-25T10:36:38-05:00 INFO asserting crisis invariants inv=2/12 module=x/crisis name=bank/total-supply
2022-05-25T10:36:38-05:00 INFO asserting crisis invariants inv=3/12 module=x/crisis name=group/Group-TotalWeight
2022-05-25T10:36:38-05:00 INFO asserting crisis invariants inv=4/12 module=x/crisis name=distribution/nonnegative-outstanding
2022-05-25T10:36:38-05:00 INFO asserting crisis invariants inv=5/12 module=x/crisis name=distribution/can-withdraw
2022-05-25T10:36:38-05:00 INFO asserting crisis invariants inv=6/12 module=x/crisis name=distribution/reference-count
2022-05-25T10:36:38-05:00 INFO asserting crisis invariants inv=7/12 module=x/crisis name=distribution/module-account
2022-05-25T10:36:38-05:00 INFO asserting crisis invariants inv=8/12 module=x/crisis name=staking/module-accounts
2022-05-25T10:36:38-05:00 INFO asserting crisis invariants inv=9/12 module=x/crisis name=staking/nonnegative-power
2022-05-25T10:36:38-05:00 INFO asserting crisis invariants inv=10/12 module=x/crisis name=staking/positive-delegation
2022-05-25T10:36:38-05:00 INFO asserting crisis invariants inv=11/12 module=x/crisis name=staking/delegator-shares
2022-05-25T10:36:39-05:00 INFO asserted all invariants duration=1194.381198 height=50 module=x/crisis
importing genesis...
--- FAIL: TestAppSimulationAfterImport (20.98s)
panic: validator set is empty after InitGenesis, please ensure at least one validator is initialized with a delegation greater than or equal to the DefaultPowerReduction ({824635701280}) [recovered]
panic: validator set is empty after InitGenesis, please ensure at least one validator is initialized with a delegation greater than or equal to the DefaultPowerReduction ({824635701280})
goroutine 76 [running]:
testing.tRunner.func1.2({0x1b88020, 0xc0035d70b0})
/home/mkoco/sdk/go1.18.2/src/testing/testing.go:1389 +0x24e
testing.tRunner.func1()
/home/mkoco/sdk/go1.18.2/src/testing/testing.go:1392 +0x39f
panic({0x1b88020, 0xc0035d70b0})
/home/mkoco/sdk/go1.18.2/src/runtime/panic.go:838 +0x207
github.com/cosmos/cosmos-sdk/types/module.(*Manager).InitGenesis(_, {{0x28b5990, 0xc0001b2000}, {0x28c2da0, 0xc002494600}, {{0x0, 0x0}, {0x0, 0x0}, 0x0, ...}, ...}, ...)
/home/mkoco/dev/regen/cosmos-sdk/types/module/module.go:329 +0x4fd
github.com/cosmos/cosmos-sdk/runtime.(*App).InitChainer(_, {{0x28b5990, 0xc0001b2000}, {0x28c2da0, 0xc002494600}, {{0x0, 0x0}, {0x0, 0x0}, 0x0, ...}, ...}, ...)
/home/mkoco/dev/regen/cosmos-sdk/runtime/app.go:121 +0x12e
github.com/cosmos/cosmos-sdk/simapp.(*SimApp).InitChainer(_, {{0x28b5990, 0xc0001b2000}, {0x28c2da0, 0xc002494600}, {{0x0, 0x0}, {0x0, 0x0}, 0x0, ...}, ...}, ...)
/home/mkoco/dev/regen/cosmos-sdk/simapp/app.go:504 +0x178
github.com/cosmos/cosmos-sdk/baseapp.(*BaseApp).InitChain(0xc000fb1340, {{0x0, 0x0, 0x0}, {0x0, 0x0}, 0x0, {0x0, 0x0, 0x0}, ...})
/home/mkoco/dev/regen/cosmos-sdk/baseapp/abci.go:69 +0x3f5
github.com/cosmos/cosmos-sdk/simapp.TestAppSimulationAfterImport(0xc000abf520)
/home/mkoco/dev/regen/cosmos-sdk/simapp/sim_test.go:269 +0xd67
testing.tRunner(0xc000abf520, 0x2590ac0)
/home/mkoco/sdk/go1.18.2/src/testing/testing.go:1439 +0x102
created by testing.(*T).Run
/home/mkoco/sdk/go1.18.2/src/testing/testing.go:1486 +0x35f
FAIL github.com/cosmos/cosmos-sdk/simapp 21.018s
FAIL
```
### Root cause
Prior to merge of #11924, SimApp calls [module/NewManager](
|
||
|---|---|---|
| .. | ||
| helpers | ||
| params | ||
| simd | ||
| app_test.go | ||
| app.go | ||
| app.yaml | ||
| config.go | ||
| encoding.go | ||
| export.go | ||
| genesis_account_test.go | ||
| genesis_account.go | ||
| genesis.go | ||
| README.md | ||
| sim_bench_test.go | ||
| sim_test.go | ||
| state.go | ||
| test_helpers.go | ||
| types.go | ||
| upgrades.go | ||
| utils_test.go | ||
| utils.go | ||
| order |
|---|
| false |
simapp
simapp is an application built using the Cosmos SDK for testing and educational purposes.
Running testnets with simd
If you want to spin up a quick testnet with your friends, you can follow these steps. Unless otherwise noted, every step must be done by everyone who wants to participate in this testnet.
-
From the root directory of the Cosmos SDK repository, run
$ make build. This will build thesimdbinary inside a newbuilddirectory. The following instructions are run from inside thebuilddirectory. -
If you've run
simdbefore, you may need to reset your database before starting a new testnet. You can reset your database with the following command:$ ./simd tendermint unsafe-reset-all. -
$ ./simd init [moniker] --chain-id [chain-id]. This will initialize a new working directory at the default location~/.simapp. You need to provide a "moniker" and a "chain id". These two names can be anything, but you will need to use the same "chain id" in the following steps. -
$ ./simd keys add [key_name]. This will create a new key, with a name of your choosing. Save the output of this command somewhere; you'll need the address generated here later. -
$ ./simd add-genesis-account [key_name] [amount], wherekey_nameis the same key name as before; andamountis something like10000000000000000000000000stake. -
$ ./simd gentx [key_name] [amount] --chain-id [chain-id]. This will create the genesis transaction for your new chain. Hereamountshould be at least1000000000stake. If you provide too much or too little, you will encounter an error when starting your node. -
Now, one person needs to create the genesis file
genesis.jsonusing the genesis transactions from every participant, by gathering all the genesis transactions underconfig/gentxand then calling$ ./simd collect-gentxs. This will create a newgenesis.jsonfile that includes data from all the validators (we sometimes call it the "super genesis file" to distinguish it from single-validator genesis files). -
Once you've received the super genesis file, overwrite your original
genesis.jsonfile with the new supergenesis.json. -
Modify your
config/config.toml(in the simapp working directory) to include the other participants as persistent peers:# Comma separated list of nodes to keep persistent connections to persistent_peers = "[validator_address]@[ip_address]:[port],[validator_address]@[ip_address]:[port]"You can find
validator_addressby running$ ./simd tendermint show-node-id. The output will be the hex-encodedvalidator_address. The defaultportis 26656. -
Now you can start your nodes:
$ ./simd start.
Now you have a small testnet that you can use to try out changes to the Cosmos SDK or Tendermint!
NOTE: Sometimes creating the network through the collect-gentxs will fail, and validators will start
in a funny state (and then panic). If this happens, you can try to create and start the network first
with a single validator and then add additional validators using a create-validator transaction.