[release-17.0] Remove viper warnings from local examples (#13234) (#1…

…3268)

* --config-file-not-found-handling wasn't being read, fixed. Added this flag to all binaries in local examples

Signed-off-by: Rohit Nayak <rohit@planetscale.com>

* Prefer vtctldclient instead of vtctlclient in teardown

Signed-off-by: Rohit Nayak <rohit@planetscale.com>

* Address review comments

Signed-off-by: Rohit Nayak <rohit@planetscale.com>

---------

Signed-off-by: Rohit Nayak <rohit@planetscale.com>
Co-authored-by: Rohit Nayak <rohit@planetscale.com>

examples/common/env.sh

@@ -30,6 +30,11 @@ for binary in mysqld etcd etcdctl curl vtctlclient vttablet vtgate vtctld mysqlc
   command -v "$binary" > /dev/null || fail "${binary} is not installed in PATH. See https://vitess.io/docs/get-started/local/ for install instructions."
 done;
 
+# vtctlclient has a separate alias setup below
+for binary in vttablet vtgate vtctld mysqlctl vtorc vtctl; do
+  alias $binary="$binary --config-file-not-found-handling=ignore"
+done;
+
 if [ "${TOPO}" = "zk2" ]; then
     # Each ZooKeeper server needs a list of all servers in the quorum.
     # Since we're running them all locally, we need to give them unique ports.
@@ -79,7 +84,7 @@ mkdir -p "${VTDATAROOT}/tmp"
 # such as ~/.my.cnf
 
 alias mysql="command mysql --no-defaults -h 127.0.0.1 -P 15306"
-alias vtctlclient="command vtctlclient --server localhost:15999 --log_dir ${VTDATAROOT}/tmp --alsologtostderr"
+alias vtctlclient="command vtctlclient --server localhost:15999 --log_dir ${VTDATAROOT}/tmp --alsologtostderr --config-file-not-found-handling=ignore"
 alias vtctldclient="command vtctldclient --server localhost:15999"
 
 # Make sure aliases are expanded in non-interactive shell

examples/local/401_teardown.sh

@@ -26,7 +26,7 @@ source ../common/env.sh
 ../common/scripts/vtgate-down.sh
 
 for tablet in 100 200 300 400; do
-	if vtctlclient --action_timeout 1s --server localhost:15999 GetTablet zone1-$tablet >/dev/null 2>&1; then
+	if vtctldclient --action_timeout 1s --server localhost:15999 GetTablet zone1-$tablet >/dev/null 2>&1; then
 		# The zero tablet is up. Try to shutdown 0-2 tablet + mysqlctl
 		for i in 0 1 2; do
 			uid=$((tablet + i))

go/viperutil/config.go

@@ -69,8 +69,9 @@ var (
 	configFileNotFoundHandling = Configure(
 		"config.notfound.handling",
 		Options[ConfigFileNotFoundHandling]{
-			Default: WarnOnConfigFileNotFound,
-			GetFunc: getHandlingValue,
+			Default:  WarnOnConfigFileNotFound,
+			GetFunc:  getHandlingValue,
+			FlagName: "config-file-not-found-handling",
 		},
 	)
 	configPersistenceMinInterval = Configure(
@@ -110,7 +111,7 @@ func RegisterFlags(fs *pflag.FlagSet) {
 	var h = configFileNotFoundHandling.Default()
 	fs.Var(&h, "config-file-not-found-handling", fmt.Sprintf("Behavior when a config file is not found. (Options: %s)", strings.Join(handlingNames, ", ")))
 
-	BindFlags(fs, configPaths, configType, configName, configFile)
+	BindFlags(fs, configPaths, configType, configName, configFile, configFileNotFoundHandling, configPersistenceMinInterval)
 }
 
 // LoadConfig attempts to find, and then load, a config file for viper-backed