[Testnet] Aptos Node Release v1.27.1

Release Notes

Release Hash: 037c78b

Validator Update Required? Y

Fullnode Update Required? Y

Aptos Blockchain

General

• The v1.27.1 Aptos node will print a error message on start up if the node detects the RLIMIT_NOFILE limit (what ulimit -n prints) is smaller than 999999 (configurable). Historically, too small a RLIMIT_NOFILE limit has caused nodes running into crashes with message "Too many open files". We wish to fail early on this matter but in this release we only print the error. Keep an eye on this message https://github.com/aptos-labs/aptos-core/blob/51e3afbaf4645c7a8dd03b94e47555c0dbed0366/aptos-node/src/utils.rs#L121-L121 to make sure.
• We also emit this Prometheus metric: node_linux_disk_rlimit_nofile_soft