1、当连接一个端口连接不上时记得看一下端口号开放了没
2、当启动rabbitmq的时候出现Is the docker daemon running?表明docker未启动需要先开启docker
开启docker
service docker start
开启rabbitmq
docker restart rabbitmq
开启redis
在redis的安装目录的bin目录下执行/root/myredis/redis.conf这个文件是复制出来的配置文件
./redis-server /root/myredis/redis.conf
关闭所有redis节点
pkill redis
redis配置集群的时候，端口号要放大十倍
防火墙 查看状态systemctl status firewalld.service打开防火墙
systemctl start firewalld.service关闭防火墙
systemctl stop firewalld.service开启防火墙
systemctl enable firewalld.service禁用防火墙
systemctl disable firewalld.servicemysql
当执行 mysql -u root -p 命令时 出现
mysql: error while loading shared libraries: libtinfo.so.5: cannot open shared object file: No such file or directory
可以执行
yum install libncurses*
修改初始密码时遇到
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘(“123456”) where User=‘root’’ at line 1
执行任意一个
alter user 'root'@'localhost' identified by 'new password';
ALTER USER USER() IDENTIFIED BY 'new password';
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'new password';doc
dir:列出当前目录下的文件以及文件夹
md:创建目录
rd:删除目录
cd:进入指定目录
cd . . :退回上一级目录
cd :退回根目录
del:删除文件
exit:退出dos命令
