docker设置了端口映射,不能访问的解决方案

#docker ps 查看， 所有端口都 做了映射

container id    image              command       created       status       ports                                                                                                                                                  names
764b158ba491    open-falcon-plus-02:v-daiyi-01  "/bin/bash"     2 days ago     up 3 hours     0.0.0.0:4444->4444/tcp, 0.0.0.0:6030-6031->6030-6031/tcp, 0.0.0.0:6070-6071->6070-6071/tcp, 0.0.0.0:6080-6081->6080-6081/tcp, 0.0.0.0:8080-8081->8080-8081/tcp, 0.0.0.0:8433->8433/tcp, 0.0.0.0:9912->9912/tcp, 0.0.0.0:14444->14444/tcp, 0.0.0.0:16060->16060/tcp, 0.0.0.0:18433->18433/tcp, 8082/tcp  open-falcon-plus-daiyi-01

#但是查看日志

tail -40 /home/work/open-falcon/agent/logs/agent.log

test@ubuntu-10:/tmp/bak$ tail -40 /home/work/open-falcon/agent/logs/agent.log
2018/10/14 20:27:09 transfer.go:48: call transfer.update fail: &{{2 1} <nil> 10.0.10.103:8433 1s} dial tcp 10.0.10.103:8433: getsockopt: connection refused
2018/10/14 20:27:09 var.go:95: <= <total=0, invalid:0, latency=0ms, message:>
2018/10/14 20:27:09 rpc.go:41: dial 10.0.10.103:8433 fail: dial tcp 10.0.10.103:8433: getsockopt: connection refused
2018/10/14 20:27:11 rpc.go:41: dial 10.0.10.103:8433 fail: dial tcp 10.0.10.103:8433: getsockopt: connection refused
2018/10/14 20:27:15 rpc.go:41: dial 10.0.10.103:8433 fail: dial tcp 10.0.10.103:8433: getsockopt: connection refused
2018/10/14 20:27:23 rpc.go:41: dial 10.0.10.103:8433 fail: dial tcp 10.0.10.103:8433: getsockopt: connection refused
2018/10/14 20:27:23 transfer.go:48: call transfer.update fail: &{{0 0} <nil> 10.0.10.103:8433 1s} dial tcp 10.0.10.103:8433: getsockopt: connection refused
2018/10/14 20:27:23 var.go:95: <= <total=0, invalid:0, latency=0ms, message:>
2018/10/14 20:27:41 var.go:88: => <total=92> <endpoint:ubuntu, metric:agent.alive, type:gauge, tags:, step:60, time:1539574061, value:1>
2018/10/14 20:27:41 var.go:88: => <total=5> <endpoint:ubuntu, metric:df.bytes.free.percent, type:gauge, tags:mount=/,fstype=ext4, step:60, time:1539574061, value:67.01861018345224>

但是无法访问

原因：

docker里面的host不能配置127.0.0.1 或者192.168.0.1 或则宿主机器将无法访问端口

修改配置文件—（涉及到的，需要外部访问的都需要修改）

[root@ubuntu-10 open-falcon]# vim transfer/config/cfg.json
{
  "debug": true,
  "minstep": 30,
  "http": {
    "enabled": true,
    "listen": "0.0.0.0:6060"
  },
  "rpc": {
    "enabled": true,
    "listen": "0.0.0.0:8433" **#此处监听外面8433. 改成0.0.0.0**
  },
  "socket": {
    "enabled": true,
    "listen": "0.0.0.0:4444",
    "timeout": 3600
  },
  "judge": {
    "enabled": true,
    "batch": 200,
    "conntimeout": 1000,
    "calltimeout": 5000,
    "maxconns": 32,
    "maxidle": 32,
    "replicas": 500,
    "cluster": {
      "judge-00" : "127.0.0.1:6080"
    }
  },
  "graph": {
    "enabled": true,
    "batch": 200,
    "conntimeout": 1000,
    "calltimeout": 5000,
    "maxconns": 32,
    "maxidle": 32,
    "replicas": 500,
    "cluster": {
      "graph-00" : "127.0.0.1:6070"
    }
  },
  "tsdb": {
    "enabled": false,
    "batch": 200,
    "conntimeout": 1000,
    "calltimeout": 5000,
    "maxconns": 32,
    "maxidle": 32,
    "retry": 3,
    "address": "127.0.0.1:8088"
  }

修改好之后重启 docker里的服务

[root@ubuntu-10 open-falcon]# ./open-falcon restart transfer

再次查看日志

test@ubuntu-10:/tmp/bak$ tail -40 /home/work/open-falcon/agent/logs/agent.log 
2018/10/15 02:52:48 var.go:88: => <total=1> <endpoint:test-endpoint, metric:test-metric-97, type:gauge, tags:idc=lgi-test,loc=beijing-test, step:20, time:1539597168, value:33>
2018/10/15 02:52:48 var.go:95: <= <total=1, invalid:0, latency=0ms, message:ok>
2018/10/15 02:52:48 var.go:88: => <total=1> <endpoint:test-endpoint, metric:test-metric-97, type:gauge, tags:idc=lgi-test,loc=beijing-test, step:20, time:1539597168, value:33>
2018/10/15 02:52:48 var.go:95: <= <total=1, invalid:0, latency=0ms, message:ok>
2018/10/15 02:52:48 var.go:88: => <total=1> <endpoint:test-endpoint, metric:test-metric-97, type:gauge, tags:idc=lgi-test,loc=beijing-test, step:20, time:1539597168, value:33>
2018/10/15 02:52:48 var.go:95: <= <total=1, invalid:0, latency=0ms, message:ok> #连接成功，数据传入。

查看端口的连接性

test@ubuntu-10:/tmp/bak$ telnet 10.0.10.103 8433
trying 10.0.10.103...
connected to 10.0.10.103.
escape character is '^]'.   #这就是ok的

好啦~ 可以连接成功。

补充：docker 镜像启动成功但是无法访问

解决办法：

vi /etc/sysctl.conf 或者

vi /usr/lib/sysctl.d/00-system.conf 添加如下代码：

net.ipv4.ip_forward=1

重启network服务

systemctl restart network 查看是否修改成功

sysctl net.ipv4.ip_forward 如果返回为“net.ipv4.ip_forward = 1”则表示成功了

以上为个人经验，希望能给大家一个参考，也希望大家多多支持。如有错误或未考虑完全的地方，望不吝赐教。