Golang runtime.FDLimit函数代码示例

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本文整理汇总了Golang中github.com/coreos/etcd/pkg/runtime.FDLimit函数的典型用法代码示例。如果您正苦于以下问题：Golang FDLimit函数的具体用法？Golang FDLimit怎么用？Golang FDLimit使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了FDLimit函数的7个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Golang代码示例。

示例1: monitorFileDescriptor

func monitorFileDescriptor(done <-chan struct{}) {
	ticker := time.NewTicker(5 * time.Second)
	defer ticker.Stop()
	for {
		used, err := runtime.FDUsage()
		if err != nil {
			plog.Errorf("cannot monitor file descriptor usage (%v)", err)
			return
		}
		fileDescriptorUsed.Set(float64(used))
		limit, err := runtime.FDLimit()
		if err != nil {
			plog.Errorf("cannot monitor file descriptor usage (%v)", err)
			return
		}
		if used >= limit/5*4 {
			plog.Warningf("80%% of the file descriptor limit is used [used = %d, limit = %d]", used, limit)
		}
		select {
		case <-ticker.C:
		case <-done:
			return
		}
	}
}

开发者ID:rnd-ua，项目名称:scope，代码行数:25，代码来源:metrics.go

示例2: init

func init() {
	rand.Seed(time.Now().UnixNano())

	expvar.Publish(
		"file_descriptor_limit",
		expvar.Func(
			func() interface{} {
				n, _ := runtime.FDLimit()
				return n
			},
		),
	)
}

开发者ID:dnaeon，项目名称:etcd，代码行数:13，代码来源:server.go

示例3: startClientListeners

func startClientListeners(cfg *Config) (sctxs map[string]*serveCtx, err error) {
	if cfg.ClientAutoTLS && cfg.ClientTLSInfo.Empty() {
		chosts := make([]string, len(cfg.LCUrls))
		for i, u := range cfg.LCUrls {
			chosts[i] = u.Host
		}
		cfg.ClientTLSInfo, err = transport.SelfCert(path.Join(cfg.Dir, "fixtures/client"), chosts)
		if err != nil {
			plog.Fatalf("could not get certs (%v)", err)
		}
	} else if cfg.ClientAutoTLS {
		plog.Warningf("ignoring client auto TLS since certs given")
	}

	sctxs = make(map[string]*serveCtx)
	for _, u := range cfg.LCUrls {
		sctx := newServeCtx()

		if u.Scheme == "http" || u.Scheme == "unix" {
			if !cfg.ClientTLSInfo.Empty() {
				plog.Warningf("The scheme of client url %s is HTTP while peer key/cert files are presented. Ignored key/cert files.", u.String())
			}
			if cfg.ClientTLSInfo.ClientCertAuth {
				plog.Warningf("The scheme of client url %s is HTTP while client cert auth (--client-cert-auth) is enabled. Ignored client cert auth for this url.", u.String())
			}
		}
		if (u.Scheme == "https" || u.Scheme == "unixs") && cfg.ClientTLSInfo.Empty() {
			return nil, fmt.Errorf("TLS key/cert (--cert-file, --key-file) must be provided for client url %s with HTTPs scheme", u.String())
		}

		proto := "tcp"
		if u.Scheme == "unix" || u.Scheme == "unixs" {
			proto = "unix"
		}

		sctx.secure = u.Scheme == "https" || u.Scheme == "unixs"
		sctx.insecure = !sctx.secure
		if oldctx := sctxs[u.Host]; oldctx != nil {
			oldctx.secure = oldctx.secure || sctx.secure
			oldctx.insecure = oldctx.insecure || sctx.insecure
			continue
		}

		if sctx.l, err = net.Listen(proto, u.Host); err != nil {
			return nil, err
		}

		if fdLimit, fderr := runtimeutil.FDLimit(); fderr == nil {
			if fdLimit <= reservedInternalFDNum {
				plog.Fatalf("file descriptor limit[%d] of etcd process is too low, and should be set higher than %d to ensure internal usage", fdLimit, reservedInternalFDNum)
			}
			sctx.l = transport.LimitListener(sctx.l, int(fdLimit-reservedInternalFDNum))
		}

		if proto == "tcp" {
			if sctx.l, err = transport.NewKeepAliveListener(sctx.l, "tcp", nil); err != nil {
				return nil, err
			}
		}

		plog.Info("listening for client requests on ", u.Host)
		defer func() {
			if err != nil {
				sctx.l.Close()
				plog.Info("stopping listening for client requests on ", u.Host)
			}
		}()
		sctx.userHandlers = cfg.UserHandlers
		sctxs[u.Host] = sctx
	}
	return sctxs, nil
}

开发者ID:menglingwei，项目名称:etcd，代码行数:72，代码来源:etcd.go

示例4: startEtcd

// startEtcd launches the etcd server and HTTP handlers for client/server communication.
func startEtcd(cfg *config) (<-chan struct{}, error) {
	urlsmap, token, err := getPeerURLsMapAndToken(cfg, "etcd")
	if err != nil {
		return nil, fmt.Errorf("error setting up initial cluster: %v", err)
	}

	pt, err := transport.NewTimeoutTransport(cfg.peerTLSInfo, peerDialTimeout(cfg.ElectionMs), rafthttp.ConnReadTimeout, rafthttp.ConnWriteTimeout)
	if err != nil {
		return nil, err
	}

	if !cfg.peerTLSInfo.Empty() {
		plog.Infof("peerTLS: %s", cfg.peerTLSInfo)
	}
	plns := make([]net.Listener, 0)
	for _, u := range cfg.lpurls {
		if u.Scheme == "http" && !cfg.peerTLSInfo.Empty() {
			plog.Warningf("The scheme of peer url %s is http while peer key/cert files are presented. Ignored peer key/cert files.", u.String())
		}
		var l net.Listener
		l, err = transport.NewTimeoutListener(u.Host, u.Scheme, cfg.peerTLSInfo, rafthttp.ConnReadTimeout, rafthttp.ConnWriteTimeout)
		if err != nil {
			return nil, err
		}

		urlStr := u.String()
		plog.Info("listening for peers on ", urlStr)
		defer func() {
			if err != nil {
				l.Close()
				plog.Info("stopping listening for peers on ", urlStr)
			}
		}()
		plns = append(plns, l)
	}

	if !cfg.clientTLSInfo.Empty() {
		plog.Infof("clientTLS: %s", cfg.clientTLSInfo)
	}
	clns := make([]net.Listener, 0)
	for _, u := range cfg.lcurls {
		if u.Scheme == "http" && !cfg.clientTLSInfo.Empty() {
			plog.Warningf("The scheme of client url %s is http while client key/cert files are presented. Ignored client key/cert files.", u.String())
		}
		var l net.Listener
		l, err = transport.NewKeepAliveListener(u.Host, u.Scheme, cfg.clientTLSInfo)
		if err != nil {
			return nil, err
		}
		if fdLimit, err := runtimeutil.FDLimit(); err == nil {
			if fdLimit <= reservedInternalFDNum {
				plog.Fatalf("file descriptor limit[%d] of etcd process is too low, and should be set higher than %d to ensure internal usage", fdLimit, reservedInternalFDNum)
			}
			l = netutil.LimitListener(l, int(fdLimit-reservedInternalFDNum))
		}

		urlStr := u.String()
		plog.Info("listening for client requests on ", urlStr)
		defer func() {
			if err != nil {
				l.Close()
				plog.Info("stopping listening for client requests on ", urlStr)
			}
		}()
		clns = append(clns, l)
	}

	var v3l net.Listener
	if cfg.v3demo {
		v3l, err = net.Listen("tcp", cfg.gRPCAddr)
		if err != nil {
			plog.Fatal(err)
		}
		plog.Infof("listening for client rpc on %s", cfg.gRPCAddr)
	}

	srvcfg := &etcdserver.ServerConfig{
		Name:                cfg.name,
		ClientURLs:          cfg.acurls,
		PeerURLs:            cfg.apurls,
		DataDir:             cfg.dir,
		DedicatedWALDir:     cfg.walDir,
		SnapCount:           cfg.snapCount,
		MaxSnapFiles:        cfg.maxSnapFiles,
		MaxWALFiles:         cfg.maxWalFiles,
		InitialPeerURLsMap:  urlsmap,
		InitialClusterToken: token,
		DiscoveryURL:        cfg.durl,
		DiscoveryProxy:      cfg.dproxy,
		NewCluster:          cfg.isNewCluster(),
		ForceNewCluster:     cfg.forceNewCluster,
		Transport:           pt,
		TickMs:              cfg.TickMs,
		ElectionTicks:       cfg.electionTicks(),
		V3demo:              cfg.v3demo,
		StrictReconfigCheck: cfg.strictReconfigCheck,
	}
	var s *etcdserver.EtcdServer
	s, err = etcdserver.NewServer(srvcfg)
//.........这里部分代码省略.........

开发者ID:utahcon，项目名称:etcd，代码行数:101，代码来源:etcd.go

示例5: startEtcd


//.........这里部分代码省略.........
				plog.Warningf("The scheme of client url %s is HTTP while client cert auth (--client-cert-auth) is enabled. Ignored client cert auth for this url.", u.String())
			}
		}
		if u.Scheme == "https" && ctlscfg == nil {
			return nil, fmt.Errorf("TLS key/cert (--cert-file, --key-file) must be provided for client url %s with HTTPs scheme", u.String())
		}

		ctx := &serveCtx{host: u.Host}

		if u.Scheme == "https" {
			ctx.secure = true
		} else {
			ctx.insecure = true
		}

		if sctxs[u.Host] != nil {
			if ctx.secure {
				sctxs[u.Host].secure = true
			}
			if ctx.insecure {
				sctxs[u.Host].insecure = true
			}
			continue
		}

		var l net.Listener

		l, err = net.Listen("tcp", u.Host)
		if err != nil {
			return nil, err
		}

		var fdLimit uint64
		if fdLimit, err = runtimeutil.FDLimit(); err == nil {
			if fdLimit <= reservedInternalFDNum {
				plog.Fatalf("file descriptor limit[%d] of etcd process is too low, and should be set higher than %d to ensure internal usage", fdLimit, reservedInternalFDNum)
			}
			l = transport.LimitListener(l, int(fdLimit-reservedInternalFDNum))
		}

		l, err = transport.NewKeepAliveListener(l, "tcp", nil)
		ctx.l = l
		if err != nil {
			return nil, err
		}

		plog.Info("listening for client requests on ", u.Host)
		defer func() {
			if err != nil {
				l.Close()
				plog.Info("stopping listening for client requests on ", u.Host)
			}
		}()
		sctxs[u.Host] = ctx
	}

	srvcfg := &etcdserver.ServerConfig{
		Name:                    cfg.name,
		ClientURLs:              cfg.acurls,
		PeerURLs:                cfg.apurls,
		DataDir:                 cfg.dir,
		DedicatedWALDir:         cfg.walDir,
		SnapCount:               cfg.snapCount,
		MaxSnapFiles:            cfg.maxSnapFiles,
		MaxWALFiles:             cfg.maxWalFiles,
		InitialPeerURLsMap:      urlsmap,

开发者ID:tamird，项目名称:etcd，代码行数:67，代码来源:etcd.go

示例6: startEtcd


//.........这里部分代码省略.........
				plog.Warningf("The scheme of client url %s is HTTP while client cert auth (--client-cert-auth) is enabled. Ignored client cert auth for this url.", u.String())
			}
		}
		if u.Scheme == "https" && ctlscfg == nil {
			return nil, fmt.Errorf("TLS key/cert (--cert-file, --key-file) must be provided for client url %s with HTTPs scheme", u.String())
		}

		ctx := &serveCtx{host: u.Host}

		if u.Scheme == "https" {
			ctx.secure = true
		} else {
			ctx.insecure = true
		}

		if sctxs[u.Host] != nil {
			if ctx.secure {
				sctxs[u.Host].secure = true
			}
			if ctx.insecure {
				sctxs[u.Host].insecure = true
			}
			continue
		}

		var l net.Listener

		l, err = net.Listen("tcp", u.Host)
		if err != nil {
			return nil, err
		}

		var fdLimit uint64
		if fdLimit, err = runtimeutil.FDLimit(); err == nil {
			if fdLimit <= reservedInternalFDNum {
				plog.Fatalf("file descriptor limit[%d] of etcd process is too low, and should be set higher than %d to ensure internal usage", fdLimit, reservedInternalFDNum)
			}
			l = transport.LimitListener(l, int(fdLimit-reservedInternalFDNum))
		}

		l, err = transport.NewKeepAliveListener(l, "tcp", nil)
		ctx.l = l
		if err != nil {
			return nil, err
		}

		plog.Info("listening for client requests on ", u.Host)
		defer func() {
			if err != nil {
				l.Close()
				plog.Info("stopping listening for client requests on ", u.Host)
			}
		}()
		sctxs[u.Host] = ctx
	}

	//载入服务器相关配置
	srvcfg := &etcdserver.ServerConfig{
		Name:                    cfg.name,            //etcd服务名
		ClientURLs:              cfg.acurls,          //其他etcd监听型号地址(一般为其他主机或其他端口) (同步与交互etcd信息)
		PeerURLs:                cfg.apurls,          //监听信号地址(本机端口) (同步与交互etcd信息)
		DataDir:                 cfg.dir,             //数据通信保存位置 (默认产生的文件夹 member/snap member/wal)
		DedicatedWALDir:         cfg.walDir,          //ETCD将写WAL文件到walDir而不是DATADIR。这允许使用一个专用磁盘 并有助于避免记录和其它IO操作之间io的竞争。 默认为空 写入DataDir
		SnapCount:               cfg.snapCount,       //提交的事务数来触发快照到磁盘 默认为10000
		MaxSnapFiles:            cfg.maxSnapFiles,    //快照文件保留最大数量（0为无限制）默认值：5 windows为:0
		MaxWALFiles:             cfg.maxWalFiles,     //wal文件保留最大数量（0为无限制）默认值：5 windows为:0

开发者ID:oywc410，项目名称:MYPG，代码行数:67，代码来源:etcd.go

示例7: startEtcd

// startEtcd launches the etcd server and HTTP handlers for client/server communication.
func startEtcd(cfg *config) (<-chan struct{}, error) {
	urlsmap, token, err := getPeerURLsMapAndToken(cfg, "etcd")
	if err != nil {
		return nil, fmt.Errorf("error setting up initial cluster: %v", err)
	}

	if cfg.peerAutoTLS && cfg.peerTLSInfo.Empty() {
		phosts := make([]string, 0)
		for _, u := range cfg.lpurls {
			phosts = append(phosts, u.Host)
		}
		cfg.peerTLSInfo, err = transport.SelfCert(cfg.dir, phosts)
		if err != nil {
			plog.Fatalf("could not get certs (%v)", err)
		}
	} else if cfg.peerAutoTLS {
		plog.Warningf("ignoring peer auto TLS since certs given")
	}

	if !cfg.peerTLSInfo.Empty() {
		plog.Infof("peerTLS: %s", cfg.peerTLSInfo)
	}

	plns := make([]net.Listener, 0)
	for _, u := range cfg.lpurls {
		if u.Scheme == "http" && !cfg.peerTLSInfo.Empty() {
			plog.Warningf("The scheme of peer url %s is http while peer key/cert files are presented. Ignored peer key/cert files.", u.String())
		}
		var l net.Listener
		l, err = rafthttp.NewListener(u, cfg.peerTLSInfo)
		if err != nil {
			return nil, err
		}

		urlStr := u.String()
		plog.Info("listening for peers on ", urlStr)
		defer func() {
			if err != nil {
				l.Close()
				plog.Info("stopping listening for peers on ", urlStr)
			}
		}()
		plns = append(plns, l)
	}

	if !cfg.clientTLSInfo.Empty() {
		plog.Infof("clientTLS: %s", cfg.clientTLSInfo)
	}
	clns := make([]net.Listener, 0)
	for _, u := range cfg.lcurls {
		if u.Scheme == "http" && !cfg.clientTLSInfo.Empty() {
			plog.Warningf("The scheme of client url %s is http while client key/cert files are presented. Ignored client key/cert files.", u.String())
		}
		var l net.Listener
		l, err = net.Listen("tcp", u.Host)
		if err != nil {
			return nil, err
		}

		if fdLimit, err := runtimeutil.FDLimit(); err == nil {
			if fdLimit <= reservedInternalFDNum {
				plog.Fatalf("file descriptor limit[%d] of etcd process is too low, and should be set higher than %d to ensure internal usage", fdLimit, reservedInternalFDNum)
			}
			l = transport.LimitListener(l, int(fdLimit-reservedInternalFDNum))
		}

		// Do not wrap around this listener if TLS Info is set.
		// HTTPS server expects TLS Conn created by TLSListener.
		l, err = transport.NewKeepAliveListener(l, u.Scheme, cfg.clientTLSInfo)
		if err != nil {
			return nil, err
		}

		urlStr := u.String()
		plog.Info("listening for client requests on ", urlStr)
		defer func() {
			if err != nil {
				l.Close()
				plog.Info("stopping listening for client requests on ", urlStr)
			}
		}()
		clns = append(clns, l)
	}

	srvcfg := &etcdserver.ServerConfig{
		Name:                    cfg.name,
		ClientURLs:              cfg.acurls,
		PeerURLs:                cfg.apurls,
		DataDir:                 cfg.dir,
		DedicatedWALDir:         cfg.walDir,
		SnapCount:               cfg.snapCount,
		MaxSnapFiles:            cfg.maxSnapFiles,
		MaxWALFiles:             cfg.maxWalFiles,
		InitialPeerURLsMap:      urlsmap,
		InitialClusterToken:     token,
		DiscoveryURL:            cfg.durl,
		DiscoveryProxy:          cfg.dproxy,
		NewCluster:              cfg.isNewCluster(),
		ForceNewCluster:         cfg.forceNewCluster,
//.........这里部分代码省略.........

开发者ID:siddontang，项目名称:etcd，代码行数:101，代码来源:etcd.go

注：本文中的github.com/coreos/etcd/pkg/runtime.FDLimit函数示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。