fabric-sdk-go dialing connection timed out - hyperledger-fabric

Question

I want to connect to fabric using fabric-sdk-go,I query the chaincode,and it is correct,but when I invoke the chaincode,it is wrong.the logs blow:
```
$ go run main.go
100
Failed to invoke: CreateAndSendTransaction failed: SendTransaction failed: calling orderer 'orderer0.1530081632652.svc.cluster.local:32567' failed: Orderer Client Status Code: (2) CONNECTION_FAILED. Description: dialing connection timed out [orderer0.1530081632652.svc.cluster.local:32567]
```
I try change orderer0.1530081632652.svc.cluster.local to 9.115.76.16,but it is also the same problem.
blow is my congig.yaml about orderer:
```
orderers:
orderer0.1530081632652.svc.cluster.local:
url: orderer0.1530081632652.svc.cluster.local:32567
# these are standard properties defined by the gRPC library
# they will be passed in as-is to gRPC client constructor
grpcOptions:
ssl-target-name-override: orderer0.1530081632652.svc.cluster.local
# These parameters should be set in coordination with the keepalive policy on the server,
# as incompatible settings can result in closing of connection.
# When duration of the 'keep-alive-time' is set to 0 or less the keep alive client parameters are disabled
keep-alive-time: 20s
keep-alive-timeout: 400s
keep-alive-permit: false
fail-fast: false
# allow-insecure will be taken into consideration if address has no protocol defined, if true then grpc or else grpcs
allow-insecure: false
tlsCACerts:
# Certificate location absolute path
path: /Users/zhangyulong/Documents/gopath/src/github.com/hyperledger/DevOps/crypto-config/ordererOrganizations/1530081632652.svc.cluster.local/tlsca/tlsca.1530081632652.svc.cluster.local-cert.pem
```
and
```
orderer:
- pattern: (\w*)orderer0.1530081632652.svc.cluster.local(\w*)
urlSubstitutionExp: orderer0.1530081632652.svc.cluster.local:32567
sslTargetOverrideUrlSubstitutionExp: orderer0.1530081632652.svc.cluster.local
mappedHost: orderer0.1530081632652.svc.cluster.local
```
my main.go about invoke is :
```
package main
import (
"fmt"
"github.com/hyperledger/fabric-sdk-go/pkg/client/channel"
"github.com/hyperledger/fabric-sdk-go/pkg/core/config"
"github.com/hyperledger/fabric-sdk-go/pkg/fabsdk"
)
const (
channelID = "devopschannel"
orgName = "org1"
orgAdmin = "Admin"
ordererOrgName = "Orderer"
ccID = "devopschannel-example_cc2"
)
func main() {
configPath := "./config1.yaml"
configOpt := config.FromFile(configPath)
sdk, err := fabsdk.New(configOpt)
if err != nil {
fmt.Println("Failed to create new SDK: %s", err)
}
defer sdk.Close()
org1ChannelClientContext := sdk.ChannelContext(channelID, fabsdk.WithUser("Admin"), fabsdk.WithOrg("Org1"))
channelClient, err := channel.New(org1ChannelClientContext)
if err != nil {
fmt.Printf("Failed to create new channel client: %s\n", err)
}
var args = [][]byte{[]byte("query"),
[]byte("a"),
}
res, err := channelClient.Query(channel.Request{
ChaincodeID: ccID,
Fcn: "invoke",
Args: args,
})
if err != nil {
fmt.Printf("Failed to query: %s\n", err)
}
fmt.Println(string(res.Payload))
// eventID := ".*"
// // // Register chaincode event (pass in channel which receives event details when the event is complete)
// reg, notifier, err := channelClient.RegisterChaincodeEvent(ccID, eventID)
// if err != nil {
// fmt.Printf("Failed to register cc event: %s", err)
// }
// defer channelClient.UnregisterChaincodeEvent(reg)
res, err = channelClient.Execute(channel.Request{
ChaincodeID: ccID,
Fcn: "invoke",
Args: [][]byte{
[]byte("move"),
[]byte("a"),
[]byte("b"),
[]byte("100"),
},
})
if err != nil {
fmt.Printf("Failed to invoke: %s\n", err)
}
fmt.Println(string(res.Payload))
// select {
// case ccEvent := <-notifier:
// log.Printf("Received CC event: %#v\n", ccEvent)
// case <-time.After(time.Second * 20):
// log.Printf("Did NOT receive CC event for eventId(%s)\n", eventID)
// }
}
```

Answer 1

Your need to put the IP of the orderer in the config.yaml (orderer0.1530081632652.svc.cluster.local is unknown):
orderers:
orderer0.1530081632652.svc.cluster.local:
url: 9.115.76.16:32567
# these are standard properties defined by the gRPC library
# they will be passed in as-is to gRPC client constructor
grpcOptions:
ssl-target-name-override: orderer0.1530081632652.svc.cluster.local
# These parameters should be set in coordination with the keepalive policy on the server,
# as incompatible settings can result in closing of connection.
# When duration of the 'keep-alive-time' is set to 0 or less the keep alive client parameters are disabled
keep-alive-time: 20s
keep-alive-timeout: 400s
keep-alive-permit: false
fail-fast: false
# allow-insecure will be taken into consideration if address has no protocol defined, if true then grpc or else grpcs
allow-insecure: false
tlsCACerts:
# Certificate location absolute path
path: /Users/zhangyulong/Documents/gopath/src/github.com/hyperledger/DevOps/crypto-config/ordererOrganizations/1530081632652.svc.cluster.local/tlsca/tlsca.1530081632652.svc.cluster.local-cert.pem
And override the hostname in the configuration too, like that:
orderer:
- pattern: (\w*)orderer0.1530081632652.svc.cluster.local(\w*)
urlSubstitutionExp: 9.115.76.16:32567
sslTargetOverrideUrlSubstitutionExp: orderer0.1530081632652.svc.cluster.local
mappedHost: orderer0.1530081632652.svc.cluster.local