diff --git a/charts/genesis.go b/charts/genesis.go
index b9dbd947..822081ec 100644
--- a/charts/genesis.go
+++ b/charts/genesis.go
@@ -18,6 +18,7 @@ package charts
 
 import (
 	"fmt"
+	"math/big"
 	"os"
 	"path/filepath"
 	"strings"
@@ -51,6 +52,7 @@ func NewGenesisChart(addrs []common.Address, gasLimit uint64) *GenesisChart {
 			false,
 			genesis.Validators(addrs...),
 			genesis.GasLimit(gasLimit),
+			genesis.Alloc(addrs, new(big.Int).Exp(big.NewInt(10), big.NewInt(50), nil)),
 		),
 	}
 
diff --git a/common/transactions.go b/common/transactions.go
index 6306c0c6..1139af66 100644
--- a/common/transactions.go
+++ b/common/transactions.go
@@ -27,15 +27,20 @@ import (
 	"github.com/getamis/istanbul-tools/client"
 )
 
+var (
+	DefaultGasPrice int64 = 20000000000
+	DefaultGasLimit int64 = 22000 // the gas of ether tx should be 21000
+)
+
 func SendEther(client *client.Client, from *ecdsa.PrivateKey, to common.Address, amount *big.Int, nonce uint64) error {
-	tx := types.NewTransaction(nonce, to, amount, nil, nil, []byte{})
-	signedTx, err := types.SignTx(tx, types.EIP155Signer{}, from)
+	tx := types.NewTransaction(nonce, to, amount, big.NewInt(DefaultGasLimit), big.NewInt(DefaultGasPrice), []byte{})
+	signedTx, err := types.SignTx(tx, types.NewEIP155Signer(big.NewInt(2017)), from)
 	if err != nil {
 		log.Error("Failed to sign transaction", "tx", tx, "err", err)
 		return err
 	}
 
-	err = client.SendRawTransaction(context.Background(), tx)
+	err = client.SendRawTransaction(context.Background(), signedTx)
 	if err != nil {
 		log.Error("Failed to send transaction", "tx", signedTx, "nonce", nonce, "err", err)
 		return err
diff --git a/genesis/genesis.go b/genesis/genesis.go
index 0aba7135..0a2800ab 100644
--- a/genesis/genesis.go
+++ b/genesis/genesis.go
@@ -46,6 +46,7 @@ func New(options ...Option) *core.Genesis {
 		Difficulty: big.NewInt(InitDifficulty),
 		Alloc:      make(core.GenesisAlloc),
 		Config: &params.ChainConfig{
+			ChainId:        big.NewInt(2017),
 			HomesteadBlock: big.NewInt(1),
 			EIP150Block:    big.NewInt(2),
 			EIP155Block:    big.NewInt(3),
diff --git a/k8s/blockchain.go b/k8s/blockchain.go
index 9879d5c4..f3a6b879 100644
--- a/k8s/blockchain.go
+++ b/k8s/blockchain.go
@@ -94,10 +94,6 @@ func (bc *blockchain) Stop(force bool) error {
 }
 
 func (bc *blockchain) Finalize() {
-	for _, v := range bc.validators {
-		v.Stop()
-	}
-
 	bc.staticNodes.Uninstall()
 	bc.genesis.Uninstall()
 }
@@ -121,7 +117,9 @@ func (bc *blockchain) setupValidators(num int, nodekeys []string, ips []string,
 			opts...,
 		)
 
-		bc.validators = append(bc.validators, geth)
+		if geth != nil {
+			bc.validators = append(bc.validators, geth)
+		}
 	}
 }
 
diff --git a/k8s/ethereum.go b/k8s/ethereum.go
index 9570972c..79753146 100644
--- a/k8s/ethereum.go
+++ b/k8s/ethereum.go
@@ -21,6 +21,7 @@ import (
 	"crypto/ecdsa"
 	"errors"
 	"math/big"
+	"strings"
 	"sync"
 	"time"
 
@@ -106,11 +107,18 @@ func (eth *ethereum) DockerBinds() []string {
 }
 
 func (eth *ethereum) NewClient() *client.Client {
-	client, err := client.Dial("ws://" + eth.Host() + ":8546")
-	if err != nil {
-		return nil
+	for i := 0; i < healthCheckRetryCount; i++ {
+		client, err := client.Dial("ws://" + eth.Host() + ":8546")
+		if err != nil {
+			log.Warn("Failed to create client", "err", err)
+			<-time.After(healthCheckRetryDelay)
+			continue
+		} else {
+			return client
+		}
 	}
-	return client
+
+	return nil
 }
 
 func (eth *ethereum) NodeAddress() string {
@@ -350,9 +358,16 @@ func (eth *ethereum) Accounts() []accounts.Account {
 // ----------------------------------------------------------------------------
 
 func (eth *ethereum) Host() string {
-	svc, err := eth.k8sClient.CoreV1().Services(defaultNamespace).Get(eth.chart.Name()+"-0", metav1.GetOptions{})
-	if err != nil {
+	index := strings.LastIndex(eth.chart.Name(), "-")
+	if index < 0 {
+		log.Error("Invalid validator pod name")
 		return ""
 	}
-	return svc.Spec.LoadBalancerIP
+	name := "validator-service-" + eth.chart.Name()[index+1:]
+	svc, err := eth.k8sClient.CoreV1().Services(defaultNamespace).Get(name, metav1.GetOptions{})
+	if err != nil {
+		log.Error("Failed to find service", "svc", name, "err", err)
+		return ""
+	}
+	return svc.Status.LoadBalancer.Ingress[0].IP
 }