fix: tendermint subcommands should not create missing files (#8481)

If the user specifies an incorrect `--home`, then the old behaviour
would automatically populate it with fresh values, but we should
fail instead.

CHANGELOG.md

@@ -60,6 +60,8 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * (x/bank) [\#8417](https://github.com/cosmos/cosmos-sdk/pull/8417) Validate balances and coin denom metadata on genesis
 * (server) [\#8399](https://github.com/cosmos/cosmos-sdk/pull/8399) fix gRPC-web flag default value
 * (client/keys) [\#8436](https://github.com/cosmos/cosmos-sdk/pull/8436) Fix key migration issue
+* (server) [\#8481](https://github.com/cosmos/cosmos-sdk/pull/8481) Don't create
+  files when running `{appd} tendermint show-*` subcommands
 
 ## [v0.40.1](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.40.1) - 2021-01-19
 

server/tm_cmds.go

@@ -28,7 +28,7 @@ func ShowNodeIDCmd() *cobra.Command {
 			serverCtx := GetServerContextFromCmd(cmd)
 			cfg := serverCtx.Config
 
-			nodeKey, err := p2p.LoadOrGenNodeKey(cfg.NodeKeyFile())
+			nodeKey, err := p2p.LoadNodeKey(cfg.NodeKeyFile())
 			if err != nil {
 				return err
 			}
@@ -48,7 +48,7 @@ func ShowValidatorCmd() *cobra.Command {
 			serverCtx := GetServerContextFromCmd(cmd)
 			cfg := serverCtx.Config
 
-			privValidator := pvm.LoadOrGenFilePV(cfg.PrivValidatorKeyFile(), cfg.PrivValidatorStateFile())
+			privValidator := pvm.LoadFilePV(cfg.PrivValidatorKeyFile(), cfg.PrivValidatorStateFile())
 			valPubKey, err := privValidator.GetPubKey()
 			if err != nil {
 				return err
@@ -86,7 +86,7 @@ func ShowAddressCmd() *cobra.Command {
 			serverCtx := GetServerContextFromCmd(cmd)
 			cfg := serverCtx.Config
 
-			privValidator := pvm.LoadOrGenFilePV(cfg.PrivValidatorKeyFile(), cfg.PrivValidatorStateFile())
+			privValidator := pvm.LoadFilePV(cfg.PrivValidatorKeyFile(), cfg.PrivValidatorStateFile())
 			valConsAddr := (sdk.ConsAddress)(privValidator.GetAddress())
 
 			output, _ := cmd.Flags().GetString(cli.OutputFlag)