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 引起的:java.lang.RuntimeException:无法弄清楚 log4j 配置.在org.apache.cassandra.service.AbstractCassandraDaemon.(AbstractCassandraDaemon.java:75)无法找到主类:org.apache.cassandra.thrift.CassandraDaemon.
程序将退出.
我导出了 JAVA_HOME 路径.我在 10.04 Lucid 机器上.有人可以帮我吗?
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，因为它在其配置目录中找不到名为log4j-server.properties"的文件，以解决您遇到的问题，无需再次重新安装，只需执行以下操作即可解决问题:
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 这里.
2) 提取:
$ tar -xzvf apache-cassandra-1.2.5.tar.bin.gz
3) 查看cassandra的配置路径在哪里.您可以从名为/usr/share/cassandra/cassandra.in.sh"的文件中获取配置路径，查看名为CASSANDRA_CONF"的密钥.
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"的目录中手动从解压包(第 2 步)中复制丢失的文件
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:
了解更多信息.如何安装 cassandra debian 包，请查看 this欲了解更多信息.如何从他们的存储库安装 cassandra，请查看 this
For more info. how to install cassandra debian package, check thisFor more info. how to install cassandra from their repository, check this
如果您想重新安装它，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 启动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！