private/testplanet: try using multiple localhosts

Rather than starting all servers on 127.0.0.1 start them
on a random local host to try avoid port exhaustion.
The port exhaustion is just a guess.

Change-Id: Ibf31d6a017852238d836291d703642b44ff66c0c

Jenkinsfile.public

@@ -183,6 +183,7 @@ pipeline {
                 }
                 stage('Tests') {
                     environment {
+                        STORJ_TEST_HOST = '127.0.0.20;127.0.0.21;127.0.0.22;127.0.0.23;127.0.0.24;127.0.0.25'
                         STORJ_TEST_COCKROACH = 'cockroach://root@localhost:26256/testcockroach?sslmode=disable;' +
                             'cockroach://root@localhost:26257/testcockroach?sslmode=disable;' +
                             'cockroach://root@localhost:26258/testcockroach?sslmode=disable;' +

private/testplanet/doc.go

@@ -20,6 +20,13 @@
 //    STORJ_TEST_COCKROACH=omit
 //
 //
+// Host
+//
+// It's possible to change the listing host with:
+//
+//    STORJ_TEST_HOST=127.0.0.2;127.0.0.3
+//
+//
 // Debugging
 //
 // For debugging, it's possible to set STORJ_TEST_MONKIT to get a trace per test.

private/testplanet/planet.go

@@ -12,6 +12,7 @@ import (
 	"os"
 	"path/filepath"
 	"runtime/pprof"
+	"strings"
 	"sync"
 	"time"
 
@@ -25,6 +26,7 @@ import (
 	"storj.io/common/pb"
 	"storj.io/common/storj"
 	"storj.io/common/testcontext"
+	"storj.io/common/testrand"
 	"storj.io/private/dbutil/pgutil"
 	"storj.io/storj/satellite/overlay"
 	"storj.io/storj/satellite/satellitedb/satellitedbtest"
@@ -59,6 +61,7 @@ type Config struct {
 	Reconfigure     Reconfigure
 
 	Name        string
+	Host        string
 	NonParallel bool
 }
 
@@ -132,6 +135,14 @@ func NewCustom(ctx *testcontext.Context, log *zap.Logger, config Config, satelli
 		config.IdentityVersion = &version
 	}
 
+	if config.Host == "" {
+		config.Host = "127.0.0.1"
+		if hostlist := os.Getenv("STORJ_TEST_HOST"); hostlist != "" {
+			hosts := strings.Split(hostlist, ";")
+			config.Host = hosts[testrand.Intn(len(hosts))]
+		}
+	}
+
 	planet := &Planet{
 		ctx:    ctx,
 		log:    log,
@@ -359,9 +370,14 @@ func (planet *Planet) NewIdentity() (*identity.FullIdentity, error) {
 	return planet.identities.NewIdentity()
 }
 
+// NewListenAddress returns an address for listening.
+func (planet *Planet) NewListenAddress() string {
+	return net.JoinHostPort(planet.config.Host, "0")
+}
+
 // NewListener creates a new listener.
 func (planet *Planet) NewListener() (net.Listener, error) {
-	return net.Listen("tcp", "127.0.0.1:0")
+	return net.Listen("tcp", planet.NewListenAddress())
 }
 
 // WriteWhitelist writes the pregenerated signer's CA cert to a "CA whitelist", PEM-encoded.

private/testplanet/satellite.go

@@ -455,10 +455,10 @@ func (planet *Planet) newSatellite(ctx context.Context, prefix string, index int
 	config.Metainfo.SegmentLoop.ListLimit = 0
 
 	// Actual testplanet-specific configuration
-	config.Server.Address = "127.0.0.1:0"
-	config.Server.PrivateAddress = "127.0.0.1:0"
-	config.Admin.Address = "127.0.0.1:0"
-	config.Console.Address = "127.0.0.1:0"
+	config.Server.Address = planet.NewListenAddress()
+	config.Server.PrivateAddress = planet.NewListenAddress()
+	config.Admin.Address = planet.NewListenAddress()
+	config.Console.Address = planet.NewListenAddress()
 	config.Server.Config.PeerCAWhitelistPath = planet.whitelistPath
 	config.Server.Config.UsePeerCAWhitelist = true
 	config.Version = planet.NewVersionConfig()

private/testplanet/storagenode.go

@@ -118,8 +118,8 @@ func (planet *Planet) newStorageNode(ctx context.Context, prefix string, index,
 
 	config := storagenode.Config{
 		Server: server.Config{
-			Address:        "127.0.0.1:0",
-			PrivateAddress: "127.0.0.1:0",
+			Address:        planet.NewListenAddress(),
+			PrivateAddress: planet.NewListenAddress(),
 
 			Config: tlsopts.Config{
 				RevocationDBURL:     "bolt://" + filepath.Join(storageDir, "revocation.db"),
@@ -157,7 +157,7 @@ func (planet *Planet) newStorageNode(ctx context.Context, prefix string, index,
 			StorageSync:    defaultInterval,
 		},
 		Console: consoleserver.Config{
-			Address:   "127.0.0.1:0",
+			Address:   planet.NewListenAddress(),
 			StaticDir: filepath.Join(developmentRoot, "web/storagenode/"),
 		},
 		Storage2: piecestore.Config{

private/testplanet/versioning.go

@@ -36,7 +36,7 @@ func (planet *Planet) newVersionControlServer() (peer *versioncontrol.Peer, err
 		},
 	}
 	config := &versioncontrol.Config{
-		Address: "127.0.0.1:0",
+		Address: planet.NewListenAddress(),
 		Versions: versioncontrol.OldVersionConfig{
 			Satellite:   "v0.0.1",
 			Storagenode: "v0.0.1",