fix: Fix some exception from set ckb node path

[yanguoyu]

1. Set ckb node data path to an empty directory, always delete mainnet ckb indexer data.
2. Delete ckb indexer data after start ckb to ensure ckb indexer data directory is correctly.

[Cedar67]

1. Set ckb node data path to an empty directory, always delete mainnet ckb indexer data.
2. Delete ckb indexer data after start ckb to ensure ckb indexer data directory is correctly.

Verified.

[Cedar67]

Unexpected:
After manually started CKB nodes are stopped, Neuron cannot start internal CKB nodes normally.

20220829-120540-HD.mov

[yanguoyu]

Unexpected: After manually started CKB nodes are stopped, Neuron cannot start internal CKB nodes normally.

20220829-120540-HD.mov

Upload bundled-ckb.log to help me why the ckb node stopped.

[Cedar67]

Unexpected: After manually started CKB nodes are stopped, Neuron cannot start internal CKB nodes normally.
20220829-120540-HD.mov

Upload bundled-ckb.log to help me why the ckb node stopped.

@yanguoyu FYI
neuron_debug_1661744320528.zip

[yanguoyu]

Maybe your ckb node is not completely stopped

[Cedar67]

Maybe your ckb node is not completely stopped.

Looks like you were right about that.
When I stop CKB by Ctrl+Z in terminal, this exception will appear. The info displayed on the terminal shows that the CKB has been stopped, but the CKB process continues. Is this an approach we don't support by Neuron?

[yanguoyu]

approach

Maybe you should try to use Ctrl + C to kill the ckb node process.