diff --git a/cmd/config.go b/cmd/config.go
index caf6eb2..153f523 100644
--- a/cmd/config.go
+++ b/cmd/config.go
@@ -152,9 +152,6 @@ func tls_string_to_client_auth_type(str string) tls.ClientAuthType {
 func log_strings_to_mask(str []string) hodu.LogMask {
 
 	var mask hodu.LogMask
-	var all hodu.LogMask
-
-	all = hodu.LogMask(hodu.LOG_DEBUG | hodu.LOG_INFO | hodu.LOG_WARN | hodu.LOG_ERROR)
 
 	if len(str) > 0 {
 		var name string
@@ -164,10 +161,10 @@ func log_strings_to_mask(str []string) hodu.LogMask {
 
 			switch name {
 				case "all":
-					mask = all
+					mask = hodu.LOG_ALL
 
 				case "none":
-					mask = hodu.LogMask(0)
+					mask = hodu.LOG_NONE
 
 				case "debug":
 					mask |= hodu.LogMask(hodu.LOG_DEBUG)
@@ -181,7 +178,7 @@ func log_strings_to_mask(str []string) hodu.LogMask {
 		}
 	} else {
 		// if not specified, log messages of all levels
-		mask = all
+		mask = hodu.LOG_ALL
 	}
 
 	return mask
diff --git a/cmd/main.go b/cmd/main.go
index 2137999..4dcfe74 100644
--- a/cmd/main.go
+++ b/cmd/main.go
@@ -149,8 +149,11 @@ func server_main(ctl_addrs []string, rpc_addrs []string, cfg *ServerConfig) erro
 	var rpctlscfg *tls.Config
 	var ctl_prefix string
 	var logger *AppLogger
+	var log_mask hodu.LogMask
 	var err error
 
+	log_mask = hodu.LOG_ALL
+
 	if cfg != nil {
 		ctltlscfg, err = make_tls_server_config(&cfg.CTL.TLS)
 		if err != nil {
@@ -170,6 +173,7 @@ func server_main(ctl_addrs []string, rpc_addrs []string, cfg *ServerConfig) erro
 		}
 
 		ctl_prefix = cfg.CTL.Service.Prefix
+		log_mask = log_strings_to_mask(cfg.APP.LogMask)
 	}
 
 	if len(rpc_addrs) <= 0 {
@@ -177,7 +181,7 @@ func server_main(ctl_addrs []string, rpc_addrs []string, cfg *ServerConfig) erro
 	}
 
 	// TODO: Change out field depending on cfg.APP.LogFile
-	logger = &AppLogger{id: "server", out: os.Stderr, mask: log_strings_to_mask(cfg.APP.LogMask)}
+	logger = &AppLogger{id: "server", out: os.Stderr, mask: log_mask}
 	s, err = hodu.NewServer(
 		context.Background(),
 		ctl_addrs,
@@ -207,8 +211,10 @@ func client_main(ctl_addrs []string, rpc_addrs []string, peer_addrs []string, cf
 	var ctl_prefix string
 	var cc hodu.ClientConfig
 	var logger *AppLogger
+	var log_mask hodu.LogMask
 	var err error
 
+	log_mask = hodu.LOG_ALL
 	if cfg != nil {
 		ctltlscfg, err = make_tls_server_config(&cfg.CTL.TLS)
 		if err != nil {
@@ -225,6 +231,7 @@ func client_main(ctl_addrs []string, rpc_addrs []string, peer_addrs []string, cf
 
 		cc.ServerSeedTimeout = cfg.RPC.Endpoint.SeedTimeout
 		cc.ServerAuthority = cfg.RPC.Endpoint.Authority
+		log_mask = log_strings_to_mask(cfg.APP.LogMask)
 	}
 
 	if len(rpc_addrs) <= 0 {
@@ -235,7 +242,7 @@ func client_main(ctl_addrs []string, rpc_addrs []string, peer_addrs []string, cf
 	cc.PeerAddrs = peer_addrs
 
 	// TODO: Change out field depending on cfg.APP.LogFile
-	logger = &AppLogger{id: "client", out: os.Stderr, mask: log_strings_to_mask(cfg.APP.LogMask)}
+	logger = &AppLogger{id: "client", out: os.Stderr, mask: log_mask}
 	c = hodu.NewClient(
 		context.Background(),
 		ctl_addrs,
@@ -280,6 +287,7 @@ func main() {
 			cfgfile = v
 			return nil
 		})
+		// TODO: add a command line option to specify log file and mask.
 		flgs.SetOutput(io.Discard) // prevent usage output
 		err = flgs.Parse(os.Args[2:])
 		if err != nil {
@@ -324,6 +332,7 @@ func main() {
 			cfgfile = v
 			return nil
 		})
+		// TODO: add a command line option to specify log file and mask.
 		flgs.SetOutput(io.Discard)
 		err = flgs.Parse(os.Args[2:])
 		if err != nil {
diff --git a/hodu.go b/hodu.go
index bb4836c..747a1b0 100644
--- a/hodu.go
+++ b/hodu.go
@@ -17,6 +17,9 @@ const (
 	LOG_ERROR
 )
 
+const LOG_ALL LogMask = LogMask(LOG_DEBUG | LOG_INFO | LOG_WARN | LOG_ERROR)
+const LOG_NONE LogMask = LogMask(0)
+
 type Logger interface {
 	Write(id string, level LogLevel, fmtstr string, args ...interface{})
 }