// addAgentInfo adds agent-required information to the agent's directory
// and returns the agent directory name.
func (cfg *MachineConfig) addAgentInfo(c *cloudinit.Config, tag string) (*agent.Conf, error) {
acfg := cfg.agentConfig(tag)
cmds, err := acfg.WriteCommands()
if err != nil {
return nil, err
}
c.AddScripts(cmds...)
return acfg, nil
}
func (cfg *MachineConfig) addMachineAgentToBoot(c *cloudinit.Config, tag, machineId, logConfig string) error {
// Make the agent run via a symbolic link to the actual tools
// directory, so it can upgrade itself without needing to change
// the upstart script.
toolsDir := tools.ToolsDir(cfg.DataDir, tag)
// TODO(dfc) ln -nfs, so it doesn't fail if for some reason that the target already exists
c.AddScripts(fmt.Sprintf("ln -s %v %s", cfg.Tools.Version, shquote(toolsDir)))
name := "jujud-" + tag
conf := upstart.MachineAgentUpstartService(name, toolsDir, cfg.DataDir, "/var/log/juju/", tag, machineId, logConfig, cfg.MachineEnvironment)
cmds, err := conf.InstallCommands()
if err != nil {
return fmt.Errorf("cannot make cloud-init upstart script for the %s agent: %v", tag, err)
}
c.AddScripts(cmds...)
return nil
}
func (cfg *MachineConfig) addMongoToBoot(c *cloudinit.Config) error {
dbDir := filepath.Join(cfg.DataDir, "db")
c.AddScripts(
"mkdir -p "+dbDir+"/journal",
// Otherwise we get three files with 100M+ each, which takes time.
"dd bs=1M count=1 if=/dev/zero of="+dbDir+"/journal/prealloc.0",
"dd bs=1M count=1 if=/dev/zero of="+dbDir+"/journal/prealloc.1",
"dd bs=1M count=1 if=/dev/zero of="+dbDir+"/journal/prealloc.2",
)
conf := upstart.MongoUpstartService("juju-db", cfg.DataDir, dbDir, cfg.StatePort)
cmds, err := conf.InstallCommands()
if err != nil {
return fmt.Errorf("cannot make cloud-init upstart script for the state database: %v", err)
}
c.AddScripts(cmds...)
return nil
}
func Configure(cfg *MachineConfig, c *cloudinit.Config) (*cloudinit.Config, error) {
if err := verifyConfig(cfg); err != nil {
return nil, err
}
c.AddSSHAuthorizedKeys(cfg.AuthorizedKeys)
c.AddPackage("git")
// Perfectly reasonable to install lxc on environment instances and kvm
// containers.
if cfg.MachineContainerType != instance.LXC {
c.AddPackage("lxc")
}
c.AddScripts(
"set -xe", // ensure we run all the scripts or abort.
fmt.Sprintf("mkdir -p %s", cfg.DataDir),
"mkdir -p /var/log/juju")
// Make a directory for the tools to live in, then fetch the
// tools and unarchive them into it.
c.AddScripts(
"bin="+shquote(cfg.jujuTools()),
"mkdir -p $bin",
fmt.Sprintf("wget --no-verbose -O - %s | tar xz -C $bin", shquote(cfg.Tools.URL)),
fmt.Sprintf("echo -n %s > $bin/downloaded-url.txt", shquote(cfg.Tools.URL)),
)
// TODO (thumper): work out how to pass the logging config to the children
debugFlag := ""
// TODO: disable debug mode by default when the system is stable.
if true {
debugFlag = " --debug"
}
if err := cfg.addLogging(c); err != nil {
return nil, err
}
// 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 nil, err
}
if cfg.StateServer {
if cfg.NeedMongoPPA() {
c.AddAptSource("ppa:juju/experimental", "1024R/C8068B11")
}
c.AddPackage("mongodb-server")
certKey := string(cfg.StateServerCert) + string(cfg.StateServerKey)
c.AddFile(cfg.dataFile("server.pem"), certKey, 0600)
if err := cfg.addMongoToBoot(c); err != nil {
return nil, err
}
// We temporarily give bootstrap-state a directory
// of its own so that it can get the state info via the
// same mechanism as other jujud commands.
acfg, err := cfg.addAgentInfo(c, "bootstrap")
if err != nil {
return nil, err
}
c.AddScripts(
fmt.Sprintf("echo %s > %s", shquote(cfg.StateInfoURL), BootstrapStateURLFile),
cfg.jujuTools()+"/jujud bootstrap-state"+
" --data-dir "+shquote(cfg.DataDir)+
" --env-config "+shquote(base64yaml(cfg.Config))+
" --constraints "+shquote(cfg.Constraints.String())+
debugFlag,
"rm -rf "+shquote(acfg.Dir()),
)
}
if err := cfg.addMachineAgentToBoot(c, machineTag, cfg.MachineId, debugFlag); err != nil {
return nil, err
}
// general options
c.SetAptUpgrade(true)
c.SetAptUpdate(true)
c.SetOutput(cloudinit.OutAll, "| tee -a /var/log/cloud-init-output.log", "")
return c, nil
}