mesos-master与zookeeper集群崩溃

Question

我正在部署一个有3个节点的zookeeper集群。我使用它来保持mesos master的高可用性。我下载Zookeeper-3.4.6.tar.gz tarball并将其解压缩为/opt，重命名为/opt/zookeeper，进入目录，编辑conf/zoo.cfg（粘贴在下面），在dataDir中创建一个myid文件（在zoo.cfg中设置为/var/lib/zookeeper)，并使用./bin/zkserver.sh start启动zookeeper，运行良好。我一个接一个地开始所有的3个节点，它们看起来都很好。我使用。/bin/zkcli.sh来连接服务器，没有问题。

但是当我启动mesos（3个主节点和3个从节点，每个节点运行一个主节点和一个从节点）时，主节点很快就崩溃了，并且在网页http://mesos_master:5050，slave选项卡中没有显示从节点。但当我只经营一个动物园管理员时，这些都很好。所以我认为这是动物园管理员群的问题。

我有3个光伏主机在我的ubuntu服务器。它们都在运行ubuntu 14.04 LTS:node-01、node-02、node-03，我在所有三个节点中都有/etc/hosts，如下所示：

172.16.2.70     node-01
172.16.2.81     node-02
172.16.2.80     node-03

我在三个节点上都安装了zookeeper，mesos。Zookeeper配置文件如下所示（所有三个节点）：

tickTime=2000
dataDir=/var/lib/zookeeper
clientPort=2181
initLimit=5
syncLimit=2
server.1=node-01:2888:3888
server.2=node-02:2888:3888
server.3=node-03:2888:3888

它们可以正常启动，运行良好。然后，我使用命令行启动mesos-master服务。/bin/mesos-master.sh--zk=zk://172.16.2.70:2181,172.16.2.81:2181,172.16.2.80:2181/mesos--work_dir=/var/lib/mesos--quorum=2，几秒钟后，它给出如下错误：

F0817 15:09:19.995256  2250 master.cpp:1253] Recovery failed: Failed to recover registrar: Failed to perform fetch within 1mins
*** Check failure stack trace: ***
    @     0x7fa2b8be71a2  google::LogMessage::Fail()
    @     0x7fa2b8be70ee  google::LogMessage::SendToLog()
    @     0x7fa2b8be6af0  google::LogMessage::Flush()
    @     0x7fa2b8be9a04  google::LogMessageFatal::~LogMessageFatal()

▽
    @     0x7fa2b81a899a  mesos::internal::master::fail()

▽
    @     0x7fa2b8262f8f  _ZNSt5_BindIFPFvRKSsS1_EPKcSt12_PlaceholderILi1EEEE6__callIvJS1_EJLm0ELm1EEEET_OSt5tupleIJDpT0_EESt12_Index_tupleIJXspT1_EEE

▽
    @     0x7fa2b823fba7  _ZNSt5_BindIFPFvRKSsS1_EPKcSt12_PlaceholderILi1EEEEclIJS1_EvEET0_DpOT_
    @     0x7fa2b820f9f3  _ZZNK7process6FutureI7NothingE8onFailedISt5_BindIFPFvRKSsS6_EPKcSt12_PlaceholderILi1EEEEvEERKS2_OT_NS2_6PreferEENUlS6_E_clES6_
    @     0x7fa2b826305c  _ZNSt17_Function_handlerIFvRKSsEZNK7process6FutureI7NothingE8onFailedISt5_BindIFPFvS1_S1_EPKcSt12_PlaceholderILi1EEEEvEERKS6_OT_NS6_6PreferEEUlS1_E_E9_M_invokeERKSt9_Any_dataS1_
    @           0x4a44e7  std::function<>::operator()()
    @           0x49f3a7  _ZN7process8internal3runISt8functionIFvRKSsEEJS4_EEEvRKSt6vectorIT_SaIS8_EEDpOT0_
    @           0x499480  process::Future<>::fail()
    @     0x7fa2b806b4b4  process::Promise<>::fail()
    @     0x7fa2b826011b  process::internal::thenf<>()
    @     0x7fa2b82a0757  _ZNSt5_BindIFPFvRKSt8functionIFN7process6FutureI7NothingEERKN5mesos8internal8RegistryEEERKSt10shared_ptrINS1_7PromiseIS3_EEERKNS2_IS7_EEESB_SH_St12_PlaceholderILi1EEEE6__callIvISM_EILm0ELm1ELm2EEEET_OSt5tupleIIDpT0_EESt12_Index_tupleIIXspT1_EEE
    @     0x7fa2b82962d9  std::_Bind<>::operator()<>()
    @     0x7fa2b827ee89  std::_Function_handler<>::_M_invoke()
I0817 15:09:20.098639  2248 http.cpp:283] HTTP GET for /master/state.json from 172.16.2.84:54542 with User-Agent='Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/44.0.2403.155 Safari/537.36'
    @     0x7fa2b8296507  std::function<>::operator()()
    @     0x7fa2b827efaf  _ZZNK7process6FutureIN5mesos8internal8RegistryEE5onAnyIRSt8functionIFvRKS4_EEvEES8_OT_NS4_6PreferEENUlS8_E_clES8_
    @     0x7fa2b82a07fe  _ZNSt17_Function_handlerIFvRKN7process6FutureIN5mesos8internal8RegistryEEEEZNKS5_5onAnyIRSt8functionIS8_EvEES7_OT_NS5_6PreferEEUlS7_E_E9_M_invokeERKSt9_Any_dataS7_
    @     0x7fa2b8296507  std::function<>::operator()()
    @     0x7fa2b82e4419  process::internal::run<>()
    @     0x7fa2b82da22a  process::Future<>::fail()
    @     0x7fa2b83136b5  std::_Mem_fn<>::operator()<>()
    @     0x7fa2b830efdf  _ZNSt5_BindIFSt7_Mem_fnIMN7process6FutureIN5mesos8internal8RegistryEEEFbRKSsEES6_St12_PlaceholderILi1EEEE6__callIbIS8_EILm0ELm1EEEET_OSt5tupleIIDpT0_EESt12_Index_tupleIIXspT1_EEE
    @     0x7fa2b8307d7f  _ZNSt5_BindIFSt7_Mem_fnIMN7process6FutureIN5mesos8internal8RegistryEEEFbRKSsEES6_St12_PlaceholderILi1EEEEclIJS8_EbEET0_DpOT_
    @     0x7fa2b82fe431  _ZZNK7process6FutureIN5mesos8internal8RegistryEE8onFailedISt5_BindIFSt7_Mem_fnIMS4_FbRKSsEES4_St12_PlaceholderILi1EEEEbEERKS4_OT_NS4_6PreferEENUlS9_E_clES9_
    @     0x7fa2b830f065  _ZNSt17_Function_handlerIFvRKSsEZNK7process6FutureIN5mesos8internal8RegistryEE8onFailedISt5_BindIFSt7_Mem_fnIMS8_FbS1_EES8_St12_PlaceholderILi1EEEEbEERKS8_OT_NS8_6PreferEEUlS1_E_E9_M_invokeERKSt9_Any_dataS1_
    @           0x4a44e7  std::function<>::operator()()
    @           0x49f3a7  _ZN7process8internal3runISt8functionIFvRKSsEEJS4_EEEvRKSt6vectorIT_SaIS8_EEDpOT0_
    @     0x7fa2b82da202  process::Future<>::fail()
    @     0x7fa2b82d2d82  process::Promise<>::fail()
Aborted

有时警告是这样的，然后以上面相同的输出崩溃：

0817 15:09:49.745750  2104 recover.cpp:111] Unable to finish the recover protocol in 10secs, retrying

我想知道zookeeper在我的情况下是否部署和运行良好，以及如何定位问题所在。欢迎任何回答和建议。谢了。

Answer 1

实际上，在我的例子中，这是因为我没有打开防火墙端口5050，以允许三个服务器相互通信。更新防火墙规则后，开始按预期工作。