Merge pull request #2884 from ipfs/feat/default-fd-bump

raise file descriptor limit to 1024 by default

cmd/ipfs/daemon.go

@@ -137,7 +137,7 @@ Headers.
 		cmds.BoolOption(unrestrictedApiAccessKwd, "This option has no effect since v0.4.3").Default(false),
 		cmds.BoolOption(unencryptTransportKwd, "Disable transport encryption (for debugging protocols)").Default(false),
 		cmds.BoolOption(enableGCKwd, "Enable automatic periodic repo garbage collection").Default(false),
-		cmds.BoolOption(adjustFDLimitKwd, "Check and raise file descriptor limits if needed").Default(false),
+		cmds.BoolOption(adjustFDLimitKwd, "Check and raise file descriptor limits if needed").Default(true),
 		cmds.BoolOption(offlineKwd, "Run offline. Do not connect to the rest of the network but provide local API.").Default(false),
 
 		// TODO: add way to override addresses. tricky part: updating the config if also --init.

cmd/ipfs/ulimit_unix.go

@@ -9,7 +9,7 @@ import (
 	"syscall"
 )
 
-var ipfsFileDescNum = uint64(2048)
+var ipfsFileDescNum = uint64(1024)
 
 func init() {
 	if val := os.Getenv("IPFS_FD_MAX"); val != "" {