Example #1
0
// ChangeAgentTools does the actual agent upgrade.
func (e *UpgradeReadyError) ChangeAgentTools() error {
	tools, err := agent.ChangeAgentTools(e.DataDir, e.AgentName, e.NewTools.Binary)
	if err != nil {
		return err
	}
	log.Infof("upgrader upgraded from %v to %v (%q)", e.OldTools.Binary, tools.Binary, tools.URL)
	return nil
}
Example #2
0
func (t *ToolsSuite) TestChangeAgentTools(c *C) {
	files := []*testing.TarFile{
		testing.NewTarFile("jujuc", 0755, "juju executable"),
		testing.NewTarFile("jujud", 0755, "jujuc executable"),
	}
	tools := &state.Tools{
		URL:    "http://foo/bar1",
		Binary: version.MustParseBinary("1.2.3-foo-bar"),
	}
	err := agent.UnpackTools(t.dataDir, tools, bytes.NewReader(testing.TarGz(files...)))
	c.Assert(err, IsNil)

	gotTools, err := agent.ChangeAgentTools(t.dataDir, "testagent", tools.Binary)
	c.Assert(err, IsNil)
	c.Assert(*gotTools, Equals, *tools)

	assertDirNames(c, t.toolsDir(), []string{"1.2.3-foo-bar", "testagent"})
	assertDirNames(c, agent.ToolsDir(t.dataDir, "testagent"), []string{"jujuc", "jujud", urlFile})

	// Upgrade again to check that the link replacement logic works ok.
	files2 := []*testing.TarFile{
		testing.NewTarFile("foo", 0755, "foo content"),
		testing.NewTarFile("bar", 0755, "bar content"),
	}
	tools2 := &state.Tools{
		URL:    "http://foo/bar2",
		Binary: version.MustParseBinary("1.2.4-foo-bar"),
	}
	err = agent.UnpackTools(t.dataDir, tools2, bytes.NewReader(testing.TarGz(files2...)))
	c.Assert(err, IsNil)

	gotTools, err = agent.ChangeAgentTools(t.dataDir, "testagent", tools2.Binary)
	c.Assert(err, IsNil)
	c.Assert(*gotTools, Equals, *tools2)

	assertDirNames(c, t.toolsDir(), []string{"1.2.3-foo-bar", "1.2.4-foo-bar", "testagent"})
	assertDirNames(c, agent.ToolsDir(t.dataDir, "testagent"), []string{"foo", "bar", urlFile})
}
Example #3
0
// primeAgent writes the configuration file and tools
// for an agent with the given entity name.
// It returns the agent's configuration and the current tools.
func (s *agentSuite) primeAgent(c *C, tag, password string) (*agent.Conf, *state.Tools) {
	tools := s.primeTools(c, version.Current)
	tools1, err := agent.ChangeAgentTools(s.DataDir(), tag, version.Current)
	c.Assert(err, IsNil)
	c.Assert(tools1, DeepEquals, tools)

	conf := &agent.Conf{
		DataDir:   s.DataDir(),
		StateInfo: s.StateInfo(c),
		APIInfo:   s.APIInfo(c),
	}
	conf.StateInfo.Tag = tag
	conf.StateInfo.Password = password
	conf.APIInfo.Tag = tag
	conf.APIInfo.Password = password
	err = conf.Write()
	c.Assert(err, IsNil)
	return conf, tools
}
Example #4
0
func (ctx *SimpleContext) DeployUnit(unitName, initialPassword string) (err error) {
	// Check sanity.
	svc := ctx.upstartService(unitName)
	if svc.Installed() {
		return fmt.Errorf("unit %q is already deployed", unitName)
	}

	// Link the current tools for use by the new agent.
	tag := state.UnitTag(unitName)
	_, err = agent.ChangeAgentTools(ctx.dataDir, tag, version.Current)
	toolsDir := agent.ToolsDir(ctx.dataDir, tag)
	defer removeOnErr(&err, toolsDir)

	// Retrieve addresses from state.
	stateAddrs, err := ctx.addresser.Addresses()
	if err != nil {
		return err
	}
	apiAddrs, err := ctx.addresser.APIAddresses()
	if err != nil {
		return err
	}

	stateInfo := state.Info{
		Addrs:  stateAddrs,
		Tag:    tag,
		CACert: ctx.caCert,
	}
	apiInfo := api.Info{
		Addrs:  apiAddrs,
		Tag:    tag,
		CACert: ctx.caCert,
	}
	// Prepare the agent's configuration data.
	conf := &agent.Conf{
		DataDir:     ctx.dataDir,
		OldPassword: initialPassword,
		StateInfo:   &stateInfo,
		APIInfo:     &apiInfo,
	}
	if err := conf.Write(); err != nil {
		return err
	}
	defer removeOnErr(&err, conf.Dir())

	// Install an upstart job that runs the unit agent.
	logPath := path.Join(ctx.logDir, tag+".log")
	syslogConfigRenderer := syslog.NewForwardConfig(tag, stateAddrs)
	syslogConfigRenderer.ConfigDir = ctx.syslogConfigDir
	syslogConfigRenderer.ConfigFileName = fmt.Sprintf("26-juju-%s.conf", tag)
	if err := syslogConfigRenderer.Write(); err != nil {
		return err
	}
	ctx.syslogConfigPath = syslogConfigRenderer.ConfigFilePath()
	if err := syslog.Restart(); err != nil {
		logger.Warningf("installer: cannot restart syslog daemon: %v", err)
	}
	defer removeOnErr(&err, ctx.syslogConfigPath)

	cmd := strings.Join([]string{
		path.Join(toolsDir, "jujud"), "unit",
		"--data-dir", conf.DataDir,
		"--unit-name", unitName,
		"--debug", // TODO: propagate debug state sensibly
	}, " ")
	uconf := &upstart.Conf{
		Service: *svc,
		Desc:    "juju unit agent for " + unitName,
		Cmd:     cmd,
		Out:     logPath,
		// Propagate the provider type enviroment variable.
		Env: map[string]string{
			"JUJU_PROVIDER_TYPE": os.Getenv("JUJU_PROVIDER_TYPE"),
		},
	}
	return uconf.Install()
}