Question

我想使用SolrCloud（Solr4.10.3）..我遵循这个维基（示例B：https://wiki.apache.org/solr/SolrCloud#Example_B:_Simple_two_shard_cluster_with_shard_replicas）

SolrCloud使用领导者和监督者作为实施细节。这意味着某些节点/副本将扮演特殊角色。你没有如果您杀死的实例是领导者或群集，则需要担心监督 - 如果您碰巧杀死其中一个，自动故障转移将为用户透明地选择新的领导者或新的监督者他们将无缝地接管各自的工作。任何Solr 实例可以升级为其中一个角色。

当我停止运行动物园管理员的第一个实例时，我无法获得另一个领导者。

我在同一节点（Example2日志文件）中获取此信息：

INFO  - 2015-03-03 11:35:39.508; org.apache.solr.cloud.OverseerElectionContext; I am going to be the leader 192.168.1.38:7574_solr
INFO  - 2015-03-03 11:35:39.548; org.apache.solr.common.cloud.SolrZkClient; makePath: /overseer_elect/leader
INFO  - 2015-03-03 11:35:39.576; org.apache.solr.cloud.Overseer; Overseer (id=93413623381032961-192.168.1.38:7574_solr-n_0000000001) starting
WARN  - 2015-03-03 11:35:39.957; org.apache.zookeeper.ClientCnxn$SendThread;    
Session 0x14bdf320ecf0001 for server 0:0:0:0:0:0:0:1/0:0:0:0:0:0:0:1:9983,    
unexpected error, closing socket connection and attempting reconnect
java.io.IOException: An existing connection was forcibly closed by the remote host
at sun.nio.ch.SocketDispatcher.read0(Native Method)
at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:43)
at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223)
at sun.nio.ch.IOUtil.read(IOUtil.java:192)
at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:379)
at org.apache.zookeeper.ClientCnxnSocketNIO.doIO(ClientCnxnSocketNIO.java:68)
at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:366)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1081)
INFO  - 2015-03-03 11:35:40.064; org.apache.solr.common.cloud.ConnectionManager; Watcher org.apache.solr.common.cloud.ConnectionManager@1537a92 name:ZooKeeperConnection Watcher:localhost:9983 got event WatchedEvent state:Disconnected type:None path:null path:null type:None
INFO  - 2015-03-03 11:35:40.064; org.apache.solr.common.cloud.ConnectionManager; zkClient has disconnected

在其他节点（例子2B）中，我在日志文件

中得到它

INFO  - 2015-03-03 11:35:39.507; org.apache.solr.cloud.ShardLeaderElectionContext; Running the leader process for shard shard1
INFO  - 2015-03-03 11:35:39.553; org.apache.solr.cloud.ShardLeaderElectionContext; Checking if I (core=collection1,coreNodeName=core_node3) should try and be the leader.
INFO  - 2015-03-03 11:35:39.574; org.apache.solr.cloud.ShardLeaderElectionContext; My last published State was Active, it's okay to be the leader.
INFO  - 2015-03-03 11:35:39.578; org.apache.solr.cloud.ShardLeaderElectionContext; I may be the new leader - try and sync
WARN  - 2015-03-03 11:35:39.956; org.apache.zookeeper.ClientCnxn$SendThread; Session 0x14bdf320ecf0002 for server 0:0:0:0:0:0:0:1/0:0:0:0:0:0:0:1:9983, unexpected error, closing socket connection and attempting reconnect
java.io.IOException: An existing connection was forcibly closed by the remote host
at sun.nio.ch.SocketDispatcher.read0(Native Method)
at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:43)
at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223)
at sun.nio.ch.IOUtil.read(IOUtil.java:192)
at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:379)
at org.apache.zookeeper.ClientCnxnSocketNIO.doIO(ClientCnxnSocketNIO.java:68)
at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:366)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1081)

我们可以在同一个例子中看到，有一个选举领导过程的呼吁，但它失败了......我没有看到问题。

如何自动获得另一位领导者？

我的solr服务器中是否有特殊配置？

如何强迫另一位领导人当选？

THX！

Answer 1

config zookeeper（host：xxx.xxx.xxx.1）：

tickTime=2000
initLimit=10
syncLimit=5
clientPort=2181
server.1=127.0.0.1:2888:3888

启动Solr1（主机：xxx.xxx.xxx.2）

java -Dbootstrap_confdir=./solr/collection1/conf 
                 -Dcollection.configName=solr1 
                 -Dsolr.allow.unsafe.resourceloading=true 
                 -DzkHost=xxx.xxx.xxx.1:2181 
                 -DnumShards=2 
                 -jar start.jar

启动Solr2（主机：xxx.xxx.xxx.3）

java -Djetty.port=8900 -DzkHost=xxx.xxx.xxx.1:2181 -jar start.jar

关闭所有防火墙！

SolrCloud选举领导人

1 个答案: