如何指定Cassandra数据存储到某些文件系统分区？ [英] how to designate Cassandra data storage to certain file-system partition?
问题描述
我使用Cassandra存储我的数据。我使用Centos。
数据似乎总是存储在根分区中，这太小了。
我的文件系统分区如
I used Cassandra to store my data. I use Centos. The data seems always to be stored in the root partition, which is too small. My file system partitions like
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos-root 50G 25G 26G 49% /
devtmpfs 7.8G 0 7.8G 0% /dev
tmpfs 7.8G 0 7.8G 0% /dev/shm
tmpfs 7.8G 17M 7.8G 1% /run
tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/sda2 494M 177M 318M 36% /boot
/dev/sda1 200M 9.8M 191M 5% /boot/efi
/dev/mapper/centos-home 873G 66G 807G 8% /home
tmpfs 1.6G 0 1.6G 0% /run/user/1001
很明显，根分区（50 GB）远远小于家庭（873GB）。
有一种方法，我改变一个设置来强制执行数据存储使用
分区/ dev / mapper / centos-home？
Obviously the root partition (50 GB) is much smaller than one at home (873GB). Is there a way that I change a setup to enforce data storage using the partition "/dev/mapper/centos-home" ?
我需要使用命令sudo service cassandra start来激活Cassandra。
如果没有sudo，我的权限不允许我激活Cassandra。
I need to use the command "sudo service cassandra start" to activate Cassandra. If without sudo, my authority doesn't allow me to activate Cassandra.
谢谢！
推荐答案
- 编辑
$ CASSANDRA_HOME / conf / cassandra.yaml文件（有时是
位于/ etc / cassandra下，取决于您如何安装
Cassandra） - 更新以下属性
- Edit the
$CASSANDRA_HOME/conf/cassandra.yamlfile (sometimes it is located under/etc/cassandraalso, depending on how you install Cassandra) - Update the following properties
- （仅在Cassandra 3.x 后可用）hints_directory：/ var / lib / cassandra / hints //放入您自己的目录
- > / var / lib / cassandra / data
- (only available since Cassandra 3.x) hints_directory: /var/lib/cassandra/hints // put your own directory here
- data_file_directories: //put a list of directories here
- /var/lib/cassandra/data
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