// ConfigureScript generates the bash script that applies
// the specified cloud-config.
func ConfigureScript(cloudcfg *cloudinit.Config) (string, error) {
// TODO(axw): 2013-08-23 bug 1215777
// Carry out configuration for ssh-keys-per-user,
// machine-updates-authkeys, using cloud-init config.
//
// We should work with smoser to get a supported
// command in (or next to) cloud-init for manually
// invoking cloud-config. This would address the
// above comment by removing the need to generate a
// script "by hand".
// Bootcmds must be run before anything else,
// as they may affect package installation.
bootcmds, err := cmdlist(cloudcfg.BootCmds())
if err != nil {
return "", err
}
// Add package sources and packages.
pkgcmds, err := addPackageCommands(cloudcfg)
if err != nil {
return "", err
}
// Runcmds come last.
runcmds, err := cmdlist(cloudcfg.RunCmds())
if err != nil {
return "", err
}
// We prepend "set -xe". This is already in runcmds,
// but added here to avoid relying on that to be
// invariant.
script := []string{"#!/bin/bash", "set -e"}
// We must initialise progress reporting before entering
// the subshell and redirecting stderr.
script = append(script, cloudinit.InitProgressCmd())
stdout, stderr := cloudcfg.Output(cloudinit.OutAll)
script = append(script, "(")
if stderr != "" {
script = append(script, "(")
}
script = append(script, bootcmds...)
script = append(script, pkgcmds...)
script = append(script, runcmds...)
if stderr != "" {
script = append(script, ") "+stdout)
script = append(script, ") "+stderr)
} else {
script = append(script, ") "+stdout+" 2>&1")
}
return strings.Join(script, "\n"), nil
}
// ConfigureJuju updates the provided cloudinit.Config with configuration
// to initialise a Juju machine agent.
func ConfigureJuju(cfg *MachineConfig, c *cloudinit.Config) error {
if err := verifyConfig(cfg); err != nil {
return err
}
// Initialise progress reporting. We need to do separately for runcmd
// and (possibly, below) for bootcmd, as they may be run in different
// shell sessions.
initProgressCmd := cloudinit.InitProgressCmd()
c.AddRunCmd(initProgressCmd)
// If we're doing synchronous bootstrap or manual provisioning, then
// ConfigureBasic won't have been invoked; thus, the output log won't
// have been set. We don't want to show the log to the user, so simply
// append to the log file rather than teeing.
if stdout, _ := c.Output(cloudinit.OutAll); stdout == "" {
c.SetOutput(cloudinit.OutAll, ">> "+cfg.CloudInitOutputLog, "")
c.AddBootCmd(initProgressCmd)
c.AddBootCmd(cloudinit.LogProgressCmd("Logging to %s on remote host", cfg.CloudInitOutputLog))
}
if !cfg.DisablePackageCommands {
AddAptCommands(cfg.AptProxySettings, c)
}
// Write out the normal proxy settings so that the settings are
// sourced by bash, and ssh through that.
c.AddScripts(
// We look to see if the proxy line is there already as
// the manual provider may have had it aleady. The ubuntu
// user may not exist (local provider only).
`([ ! -e /home/ubuntu/.profile ] || grep -q '.juju-proxy' /home/ubuntu/.profile) || ` +
`printf '\n# Added by juju\n[ -f "$HOME/.juju-proxy" ] && . "$HOME/.juju-proxy"\n' >> /home/ubuntu/.profile`)
if (cfg.ProxySettings != osenv.ProxySettings{}) {
exportedProxyEnv := cfg.ProxySettings.AsScriptEnvironment()
c.AddScripts(strings.Split(exportedProxyEnv, "\n")...)
c.AddScripts(
fmt.Sprintf(
`[ -e /home/ubuntu ] && (printf '%%s\n' %s > /home/ubuntu/.juju-proxy && chown ubuntu:ubuntu /home/ubuntu/.juju-proxy)`,
shquote(cfg.ProxySettings.AsScriptEnvironment())))
}
// Make the lock dir and change the ownership of the lock dir itself to
// ubuntu:ubuntu from root:root so the juju-run command run as the ubuntu
// user is able to get access to the hook execution lock (like the uniter
// itself does.)
lockDir := path.Join(cfg.DataDir, "locks")
c.AddScripts(
fmt.Sprintf("mkdir -p %s", lockDir),
// We only try to change ownership if there is an ubuntu user
// defined, and we determine this by the existance of the home dir.
fmt.Sprintf("[ -e /home/ubuntu ] && chown ubuntu:ubuntu %s", lockDir),
fmt.Sprintf("mkdir -p %s", cfg.LogDir),
fmt.Sprintf("chown syslog:adm %s", cfg.LogDir),
)
// Make a directory for the tools to live in, then fetch the
// tools and unarchive them into it.
var copyCmd string
if strings.HasPrefix(cfg.Tools.URL, fileSchemePrefix) {
copyCmd = fmt.Sprintf("cp %s $bin/tools.tar.gz", shquote(cfg.Tools.URL[len(fileSchemePrefix):]))
} else {
curlCommand := "curl -sSfw 'tools from %{url_effective} downloaded: HTTP %{http_code}; time %{time_total}s; size %{size_download} bytes; speed %{speed_download} bytes/s '"
if cfg.DisableSSLHostnameVerification {
curlCommand += " --insecure"
}
copyCmd = fmt.Sprintf("%s -o $bin/tools.tar.gz %s", curlCommand, shquote(cfg.Tools.URL))
c.AddRunCmd(cloudinit.LogProgressCmd("Fetching tools: %s", copyCmd))
}
toolsJson, err := json.Marshal(cfg.Tools)
if err != nil {
return err
}
c.AddScripts(
"bin="+shquote(cfg.jujuTools()),
"mkdir -p $bin",
copyCmd,
fmt.Sprintf("sha256sum $bin/tools.tar.gz > $bin/juju%s.sha256", cfg.Tools.Version),
fmt.Sprintf(`grep '%s' $bin/juju%s.sha256 || (echo "Tools checksum mismatch"; exit 1)`,
cfg.Tools.SHA256, cfg.Tools.Version),
fmt.Sprintf("tar zxf $bin/tools.tar.gz -C $bin"),
fmt.Sprintf("rm $bin/tools.tar.gz && rm $bin/juju%s.sha256", cfg.Tools.Version),
fmt.Sprintf("printf %%s %s > $bin/downloaded-tools.txt", shquote(string(toolsJson))),
)
// We add the machine agent's configuration info
// before running bootstrap-state so that bootstrap-state
// has a chance to rerwrite it to change the password.
// It would be cleaner to change bootstrap-state to
// be responsible for starting the machine agent itself,
// but this would not be backwardly compatible.
machineTag := names.MachineTag(cfg.MachineId)
_, err = cfg.addAgentInfo(c, machineTag)
if err != nil {
return err
}
// Add the cloud archive cloud-tools pocket to apt sources
// for series that need it. This gives us up-to-date LXC,
// MongoDB, and other infrastructure.
if !cfg.DisablePackageCommands {
series := cfg.Tools.Version.Series
MaybeAddCloudArchiveCloudTools(c, series)
}
if cfg.Bootstrap {
cons := cfg.Constraints.String()
if cons != "" {
cons = " --constraints " + shquote(cons)
}
var hardware string
if cfg.HardwareCharacteristics != nil {
if hardware = cfg.HardwareCharacteristics.String(); hardware != "" {
hardware = " --hardware " + shquote(hardware)
}
}
c.AddRunCmd(cloudinit.LogProgressCmd("Bootstrapping Juju machine agent"))
c.AddScripts(
// The bootstrapping is always run with debug on.
cfg.jujuTools() + "/jujud bootstrap-state" +
" --data-dir " + shquote(cfg.DataDir) +
" --env-config " + shquote(base64yaml(cfg.Config)) +
" --instance-id " + shquote(string(cfg.InstanceId)) +
hardware +
cons +
" --debug",
)
}
return cfg.addMachineAgentToBoot(c, machineTag, cfg.MachineId)
}