func (s *provisionerSuite) TestProvisioningScript(c *gc.C) {
const series = "precise"
const arch = "amd64"
defer fakeSSH{
Series: series,
Arch: arch,
InitUbuntuUser: true,
}.install(c).Restore()
machineId, err := manual.ProvisionMachine(s.getArgs(c))
c.Assert(err, gc.IsNil)
mcfg, err := client.MachineConfig(s.State, machineId, state.BootstrapNonce, "/var/lib/juju")
c.Assert(err, gc.IsNil)
script, err := manual.ProvisioningScript(mcfg)
c.Assert(err, gc.IsNil)
cloudcfg := coreCloudinit.New()
err = cloudinit.ConfigureJuju(mcfg, cloudcfg)
c.Assert(err, gc.IsNil)
cloudcfg.SetAptUpgrade(false)
sshinitScript, err := sshinit.ConfigureScript(cloudcfg)
c.Assert(err, gc.IsNil)
removeLogFile := "rm -f '/var/log/cloud-init-output.log'\n"
expectedScript := removeLogFile + shell.DumpFileOnErrorScript("/var/log/cloud-init-output.log") + sshinitScript
c.Assert(script, gc.Equals, expectedScript)
}
func (*scriptSuite) TestDumpFileOnErrorScript(c *gc.C) {
tempdir := c.MkDir()
filename := filepath.Join(tempdir, "log.txt")
err := ioutil.WriteFile(filename, []byte("abc"), 0644)
c.Assert(err, gc.IsNil)
dumpScript := shell.DumpFileOnErrorScript(filename)
c.Logf("%s", dumpScript)
run := func(command string) (stdout, stderr string) {
var stdoutBuf, stderrBuf bytes.Buffer
cmd := exec.Command("/bin/bash", "-s")
cmd.Stdin = strings.NewReader(dumpScript + command)
cmd.Stdout = &stdoutBuf
cmd.Stderr = &stderrBuf
cmd.Run()
return stdoutBuf.String(), stderrBuf.String()
}
stdout, stderr := run("exit 0")
c.Assert(stdout, gc.Equals, "")
c.Assert(stderr, gc.Equals, "")
stdout, stderr = run("exit 1")
c.Assert(stdout, gc.Equals, "")
c.Assert(stderr, gc.Equals, "abc")
err = os.Remove(filename)
c.Assert(err, gc.IsNil)
stdout, stderr = run("exit 1")
c.Assert(stdout, gc.Equals, "")
c.Assert(stderr, gc.Equals, "")
}
func (*scriptSuite) TestDumpFileOnErrorScriptOutput(c *gc.C) {
script := shell.DumpFileOnErrorScript("a b c")
c.Assert(script, gc.Equals, `
dump_file() {
code=$?
if [ $code -ne 0 -a -e 'a b c' ]; then
cat 'a b c' >&2
fi
exit $code
}
trap dump_file EXIT
`[1:])
}
// ProvisioningScript generates a bash script that can be
// executed on a remote host to carry out the cloud-init
// configuration.
func ProvisioningScript(mcfg *cloudinit.MachineConfig) (string, error) {
cloudcfg := coreCloudinit.New()
if err := cloudinit.ConfigureJuju(mcfg, cloudcfg); err != nil {
return "", err
}
// Explicitly disabling apt_upgrade so as not to trample
// the target machine's existing configuration.
cloudcfg.SetAptUpgrade(false)
configScript, err := sshinit.ConfigureScript(cloudcfg)
if err != nil {
return "", err
}
var buf bytes.Buffer
// Always remove the cloud-init-output.log file first, if it exists.
fmt.Fprintf(&buf, "rm -f %s\n", utils.ShQuote(mcfg.CloudInitOutputLog))
// If something goes wrong, dump cloud-init-output.log to stderr.
buf.WriteString(shell.DumpFileOnErrorScript(mcfg.CloudInitOutputLog))
buf.WriteString(configScript)
return buf.String(), nil
}
}
// Bootstrap is synchronous, and will spawn a subprocess
// to complete the procedure. If the user hits Ctrl-C,
// SIGINT is sent to the foreground process attached to
// the terminal, which will be the ssh subprocess at this
// point. For that reason, we do not call StopInterruptNotify
// until this function completes.
cloudcfg := coreCloudinit.New()
if err := cloudinit.ConfigureJuju(machineConfig, cloudcfg); err != nil {
return err
}
configScript, err := sshinit.ConfigureScript(cloudcfg)
if err != nil {
return err
}
script := shell.DumpFileOnErrorScript(machineConfig.CloudInitOutputLog) + configScript
return sshinit.RunConfigureScript(script, sshinit.ConfigureParams{
Host: "ubuntu@" + addr,
Client: client,
Config: cloudcfg,
ProgressWriter: ctx.GetStderr(),
})
}
type addresser interface {
// Refresh refreshes the addresses for the instance.
Refresh() error
// Addresses returns the addresses for the instance.
// To ensure that the results are up to date, call
// Refresh first.