Hadoop,HBase集群环境搭建的问题集锦(二)

10.艾玛, Datanode也启动不了了?

找到log:

Caused by: java.net.UnknownHostException: Invalid host name: local host is: (unknown); destination host is: “maste1”:8031; java.net.

UnknownHostException; For more details see: http://wiki.apache.org/hadoop/UnknownHost

解决办法:

找到hadoop配置文件yarn-site.xml改正配置信息如下.



依然启动不了?

解决办法:

清空master1, master2 上的name里的数据,删除current目录,rm -rf current

清空slave1,slave2上的data01里的数据,删除current目录,rm -rf current

在主master1上name格式化, hdfs namenode -format

启动hdfs: ./start-all.sh

奏效!!赞!!!

11.命令#netstat -atln是做什么的?

答: 查看网络端口信息的.

-a (all)显示所有选项，默认不显示LISTEN相关

-t (tcp)仅显示tcp相关选项

-n 拒绝显示别名，能显示数字的全部转化成数字。

-l 仅列出有在 Listen (监听) 的服務状态

参考链接/article/4630439.html



12.Tomcat配置web账号密码:

答:配置web管理帐号

修改文件conf/tomcat-users.xml，在tomcat-users元素中添加帐号密码，需要指定角色.

# vi /usr/local/tomcat/server/conf/tomcat-users.xml

<tomcat-users>
<user name="admin" password="admin" roles="admin-gui,manager-gui" />
</tomcat-users>

参考资料:/article/8805179.html

Solr安装参考资料:

http://www.linuxidc.com/Linux/2014-05/101443.htm

http://www.656463.com/article/IbiInu.htm

13. 查看 solr的logging会出现：

19:44:42 WARN SolrResourceLoader Can’t find (or read) directory to add to classloader: ../../../contrib/extraction/lib (resolved as: /home/solr_home/collection1/../../../contrib/extraction/lib).

这样的警告；其实这是因为找不到 对应的jar包造成的。

在/home/solr_home/collection1/conf/solrconfig.xml 中原有的配置文件为：

<lib dir="../../../contrib/extraction/lib" regex=".*\.jar" />
<lib dir="../../../dist/" regex="solr-cell-\d.*\.jar" />
<lib dir="../../../contrib/clustering/lib/" regex=".*\.jar" />
<lib dir="../../../dist/" regex="solr-clustering-\d.*\.jar" />
<lib dir="../../../contrib/langid/lib/" regex=".*\.jar" />
<lib dir="../../../dist/" regex="solr-langid-\d.*\.jar" />
<lib dir="../../../contrib/velocity/lib" regex=".*\.jar" />
<lib dir="../../../dist/" regex="solr-velocity-\d.*\.jar" />
<!-- If a 'dir' option (with or without a regex) is used and nothing
is found that matches, a warning will be logged.
-->
<lib dir="/non/existent/dir/yields/warning" />

这个是警告信息

解决办法: 可以将 solr-4.3.1\目录下的 contrib 和 dist 拷贝到 /home/solr_home/collection1/conf 下面就可以了

然后修改上面的配置文件/home/solr_home/collection1/conf/solrconfig.xml即可。

<lib dir="conf/contrib/extraction/lib" regex=".*\.jar" />
<lib dir="conf/dist/" regex="solr-cell-\d.*\.jar" />
<lib dir="conf/contrib/clustering/lib/" regex=".*\.jar" />
<lib dir="conf/dist/" regex="solr-clustering-\d.*\.jar" />
<lib dir="conf/contrib/langid/lib/" regex=".*\.jar" />
<lib dir="conf/dist/" regex="solr-langid-\d.*\.jar" />
<lib dir="conf/contrib/velocity/lib" regex=".*\.jar" />
<lib dir="conf/dist/" regex="solr-velocity-\d.*\.jar" />
<!-- If a 'dir' option (with or without a regex) is used and nothing
is found that matches, a warning will be logged.
-->
<lib dir="/non/existent/dir/yields/warning" />

14.Solr中如何新建core?

参考资料:http://blog.csdn.net/clj198606061111/article/details/21288499/

15 solr完美安装参考链接?

http://www.656463.com/article/IbiInu.htm

/article/3557693.html