小编wia*_*ise的帖子

我想用一个非常简单的单节点集群启动Cassandra,但我不能这样做.

我遵循了描述的步骤

https://www.digitalocean.com/community/tutorials/how-to-install-cassandra-and-run-a-single-node-cluster-on-a-ubuntu-vps

基本上,

1. 在VirtualBox上构建了一个全新的CentOS 7虚拟机.
2. 安装JDK,将其放在/ usr/local /下,并创建pathes.
3. 安装了Apache Cassandra,将它放在/ root /下,为lib和日志做了直接操作,并给了Cassandra写权.

最后,当我以root用户身份运行时,

# sh ~/cassandra/bin/cassandra

出现以下信息.

Running Cassandra as root user or group is not recommended - please start Cassandra using a different system user.
If you really want to force running Cassandra as root, use -R command line option.

所以,我跑了

# sh ~/cassandra/bin/cassandra -R

然后,我收到了下面的消息.

# [0.000s][warning][gc] -Xloggc is deprecated. Will use -Xlog:gc:/root/cassandra/bin/../logs/gc.log instead.
intx ThreadPriorityPolicy=42 is outside the allowed range [ 0 ... 1 ]
Improperly …