启动cassandra作为服务不适用于2.0.5，sudo cassandra -f工程 [英] Starting cassandra as a service does not work for 2.0.5, sudo cassandra -f works

问题描述

当我尝试在ubuntu 12.04（通过Datastax的 dsc20 包安装）作为服务启动cassandra时，如下所示：

When I try to start cassandra on ubuntu 12.04 (installed via Datastax's dsc20 package) as a service as follows :

$ sudo服务cassandra开始

$ sudo service cassandra start

它说

*无法访问Cassandra的pidfile

*could not access pidfile for Cassandra

没有其他消息或日志中的任何内容。

& no other messages or anything in logs.

但是当我尝试以root用户身份运行（ sudo cassandra -f ）时， cassandra开始。尝试调试时，我发现当尝试以非root用户身份运行时，我收到以下消息：

But when I try to run as a root user( sudo cassandra -f) it just works properly & cassandra is started. While trying to debug I found that when trying to run as a non-root user I was getting these messages:

ERROR 17:48:08,432 Exception encountered during startup
java.lang.AssertionError: Directory /var/lib/cassandra/data is not accessible.
..
java.io.FileNotFoundException: /var/log/cassandra/system.log (Permission denied)
..
java.lang.AssertionError: Directory /var/lib/cassandra/data is not accessible.

包装有问题吗？未正确安装/配置由包？

Is there some problem with the packaging ? Not properly installed/ configured by package ??

推荐答案

默认情况下，cassandra服务不会并且不应以root用户身份运行。

By default the cassandra service does not and should not run as root.

我的猜测是你先在前台运行它，它会自动创建/ var / lib / cassandra与root权限，而不是cassandra权限。或者用适当的组和用户选择-R / var / lib / cassandra或者清除目录，然后尝试重新启动服务。

My guess is you ran it in the foreground first, which automatically will create /var/lib/cassandra with root permissions instead of with the cassandra permissions. Either chown -R /var/lib/cassandra with the appropriate group and user or blow away the directory and try starting the service again.

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