Cassandra起始问题 [英] Cassandra starting issue

问题描述

我在启动Cassandra时遇到问题。以下是我尝试发出启动命令时的终端输出：

I have problems starting Cassandra. The follow is my terminal output when I try to issue a start command:

root @ gestion：〜＃cassandra -f

线程main中的异常
java.lang.ExceptionInInitializerError导致：
java.lang.RuntimeException：无法找出log4j配置。
at
org.apache.cassandra.service.AbstractCassandraDaemon（AbstractCassandraDaemon.java:75）
找不到主类：
org.apache.cassandra.thrift.CassandraDaemon 。

程序将退出。

root@gestion:~# cassandra -f
Exception in thread "main" java.lang.ExceptionInInitializerError Caused by: java.lang.RuntimeException: Couldn't figure out log4j configuration. at org.apache.cassandra.service.AbstractCassandraDaemon.(AbstractCassandraDaemon.java:75) Could not find the main class: org.apache.cassandra.thrift.CassandraDaemon.
Program will exit.

我导出了JAVA_HOME路径。我在一个10.04 Lucid机器。

I exported the JAVA_HOME path. I am on an 10.04 Lucid machine. Can anyone please help me?

推荐答案

实际上，问题是，cassandra无法启动，因为它找不到名为 log4j-server.properties，以解决您在那里的问题，无需重新安装它，而只需执行以下操作来解决问题：

Actually the issue is that cassandra could not start up as it is not finding the file named "log4j-server.properties" in its configuration directory, to resolve the issue you have there, no need to reinstall it again but instead simply do the following to resolve the issue:

1）从此处下载tarball文件。

2）解压缩：

$ tar -xzvf apache-cassandra-1.2.5.tar.bin.gz 

3） Cassandra的配置路径。您可以从名为/usr/share/cassandra/cassandra.in.sh的文件中获取配置路径，请检查名为CASSANDRA_CONF的键。

3) Check where is the configuration path of cassandra. you could get the config path from file named "/usr/share/cassandra/cassandra.in.sh", check out the key named "CASSANDRA_CONF".

$ gedit /usr/share/cassandra/cassandra.in.sh

4）从名为conf的目录中手动复制缺失的文件（步骤2）

4) copy the missing files manually from the extracted package (step 2) from a directory named "conf"

$ sudo cp extracted_cassandra/conf/cassandra.yaml /etc/cassandra

$ sudo cp extracted_cassandra/conf/log4j-server.properties /etc/cassandra

提示：

有关详情。如何安装cassandra debian软件包，请检查此
更多信息。如何从其存储库安装cassandra，请检查此

For more info. how to install cassandra debian package, check this For more info. how to install cassandra from their repository, check this

如果您要重新安装它，只需执行以下操作：

If you want to re-install it, simply you could do the following:

$ sudo apt-get remove cassandra 

$ sudo apt-get install cassandra

这篇关于Cassandra起始问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！