Cosmovisor v2

[robert-zaremba]

Epic Tasks

This issues is not a discussion, we should limit amount of comments here.

• Graceful shutdown with tendermint
• Support running external binaries (eg: cosmwasm)
• Support updating external binaries (eg: cosmwasm)

[ethanfrey]

Support running external binaries (eg: cosmwasm)

??

We have run cosmovisor successfully with wasmd several months ago. We hit one issue when it outputted enormously long lines (we used to dump the wasm code as base64 in the logs) and this killed the cosmovisor headline process, leading to a nasty crash when someone uploaded code.

Other than that (which we fixed with our logging), we didn't have issues. There is no external binary, it is just a dll built into the binary (using static builds / alpine linux). Maybe this is different for glibc and the shared dll and that is what you are referring to?

What is really missing for CosmWasm is state sync support. I'd love to see some hooks so we could add a way to sync wasm code. Just the hooks, I can do the rest.

[robert-zaremba]

Let's chat about the wasmd setup. State sync is a different epic which we are also planning.

[aaronc]

I think it's too early to start an epic. We don't have things clearly scoped so please let's convert this issue to a discussion to get more clarity. The tendermint stuff is also still in design and will likely affect x/upgrade + BaseApp as well.

[ethanfrey]

TL;DR

If you can swap binaries that should be enough for wamsd.

Ideally you could run docker images from cosmovisor, and/or allow us to set an environmental variable for each version. Those would be the only requests I could make

[robert-zaremba]

I've created a discussion to specify Cosmovisr v2.

[clevinson]

Closing this issue so further comments can move to the discussion. Let's open issues again once we have specific features defined later down the line.