75 lines
1.6 KiB
Go
75 lines
1.6 KiB
Go
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package amazonebs
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import (
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"fmt"
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gossh "code.google.com/p/go.crypto/ssh"
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"github.com/mitchellh/goamz/ec2"
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"github.com/mitchellh/packer/communicator/ssh"
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"github.com/mitchellh/packer/packer"
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"log"
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"net"
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"time"
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)
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type stepConnectSSH struct {
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conn net.Conn
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}
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func (s *stepConnectSSH) Run(state map[string]interface{}) StepAction {
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instance := state["instance"].(*ec2.Instance)
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privateKey := state["privateKey"].(string)
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ui := state["ui"].(packer.Ui)
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// Build the keyring for authentication. This stores the private key
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// we'll use to authenticate.
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keyring := &ssh.SimpleKeychain{}
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err := keyring.AddPEMKey(privateKey)
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if err != nil {
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ui.Say("Error setting up SSH config: %s", err.Error())
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return StepHalt
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}
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// Build the actual SSH client configuration
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sshConfig := &gossh.ClientConfig{
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User: "ubuntu",
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Auth: []gossh.ClientAuth{
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gossh.ClientAuthKeyring(keyring),
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},
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}
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// Try to connect for SSH a few times
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ui.Say("Connecting to the instance via SSH...")
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for i := 0; i < 5; i++ {
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time.Sleep(time.Duration(i) * time.Second)
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log.Printf(
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"Opening TCP conn for SSH to %s:22 (attempt %d)",
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instance.DNSName, i+1)
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s.conn, err = net.Dial("tcp", fmt.Sprintf("%s:22", instance.DNSName))
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if err != nil {
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continue
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}
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}
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var comm packer.Communicator
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if err == nil {
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comm, err = ssh.New(s.conn, sshConfig)
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}
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if err != nil {
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ui.Error("Error connecting to SSH: %s", err.Error())
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return StepHalt
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}
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// Set the communicator on the state bag so it can be used later
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state["communicator"] = comm
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return StepContinue
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}
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func (s *stepConnectSSH) Cleanup(map[string]interface{}) {
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if s.conn != nil {
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s.conn.Close()
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}
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}
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