serverOptions.v.readBufferSizeMB=cmdServer.Flag.Int("volume.readBufferSizeMB",4,"<experimental> larger values can optimize query performance but will increase some memory usage,Use with hasSlowRead normally")
s3Options.port=cmdServer.Flag.Int("s3.port",8333,"s3 server http listen port")
s3Options.portHttps=cmdServer.Flag.Int("s3.port.https",0,"s3 server https listen port")
s3Options.portGrpc=cmdServer.Flag.Int("s3.port.grpc",0,"s3 server grpc listen port")
s3Options.domainName=cmdServer.Flag.String("s3.domainName","","suffix of the host name in comma separated list, {bucket}.{domainName}")
s3Options.tlsPrivateKey=cmdServer.Flag.String("s3.key.file","","path to the TLS private key file")