docker 安装 redis
docker search redis
docker pull redis

docker run --restart=always --log-opt max-size=100m \
           --log-opt max-file=2 -p 6379:6379 \
           --name myredis \
           -v ~/redis/redis.conf:/etc/redis/redis.conf \
           -v ~/redis/data:/data \
           -d redis redis-server /etc/redis/redis.conf  \
           --appendonly yes  --requirepass 123456

–restart=always 总是开机启动
–log是日志方面的
-p 6379:6379 将6379端口挂载出去
–name 给这个容器取一个名字
-v 数据卷挂载
~/redis/redis.conf:/etc/redis/redis.conf 这里是将 liunx 路径下的redis.conf 和redis
下的redis.conf挂载在一起。
~/redis/data:/data 这个同上
-d redis 表示后台启动redis
redis-server /etc/redis/redis.conf 以配置文件启动redis，加载容器内的conf文件，
最终找到的是挂载的目录 /etc/redis/redis.conf 也就是liunx下的~/redis/redis.conf
–appendonly yes 开启redis 持久化
–requirepass 000415 设置密码 

查看当前redis有没有设置密码：
config get requirepass

阅读全文

ERROR: Attempting to operate on yarn resourcemanager as root

ERROR: but there is no YARN_RESOURCEMANAGER_USER defined. Aborting operation.

Starting nodemanagers

ERROR: Attempting to operate on yarn nodemanager as root

ERROR: but there is no YARN_NODEMANAGER_USER defined. Aborting operation.

ERROR: Attempting to operate on hdfs namenode as root

ERROR: but there is no HDFS_NAMENODE_USER defined. Aborting operation.

Starting datanodes

ERROR: Attempting to operate on hdfs datanode as root

ERROR: but there is no HDFS_DATANODE_USER defined. Aborting operation.

阅读全文