备份

df/磁盘处理记录.md

@@ -0,0 +1,17 @@
+误删启动盘又想加载之前的信息。
+
+基本命令：
+
+```shell
+# 查看磁盘使用
+df
+# 磁盘管理
+fdisk --help
+# 磁盘挂载
+mount /dev/sda2 old
+# mount: /home/shixiaohua/old: mount(2) system call failed: Cannot allocate memory.
+
+# 追踪错误信息
+strace mount /dev/sda2 old
+```
+

df/项目启动.md

@@ -0,0 +1,76 @@
+# 项目启动
+
+## zookeeper 启动
+
+```shell
+## 启动
+zkServer.sh start
+## 查看状态
+zkServer.sh status
+```
+
+## kafka启动
+
+```shell
+## 启动
+./kafka-server-start.sh -daemon ../config/server.properties
+## 创建主题
+./kafka-topics.sh --zookeeper service:2181,service-node1:2181,service-node2:2181/bigdata/kafka --create --topic "t_traffic" --partitions 3 --replication-factor 2
+```
+
+## flume启动
+
+```shell
+flume-ng agent -n a -f ./to_kafka.conf -Dflume.root.logger=INFO,console
+```
+
+## hadoop启动
+
+```shell
+## 启动全部node节点
+start-all.sh
+## 关闭安全模式
+hdfs dfsadmin -safemode leave 
+```
+
+## yarn启动
+
+```shell
+yarn-daemon.sh start resourcemanager
+```
+
+## hive启动
+
+```shell
+## 启动元数据
+hive --service metastore &
+## 启动客户端
+hive
+```
+
+## canal
+
+启动
+
+```sh
+cd /usr/local/capsoftware/canal/deployer/bin
+sh startup.sh  
+```
+
+## ES
+
+启动
+
+```sh
+cd /usr/local/capsoftware/es/elasticsearch-7.12.0/bin
+su es
+./elasticsearch  
+
+# 是否启动http://localhost:9200/
+# header插件
+cd /usr/local/capsoftware/es/elasticsearch-7.12.0/elasticsearch-head
+npm run start
+```
+
+
+

数据库/mysql安装.md

@@ -147,14 +147,17 @@ systemctl status mysqld
 
 连接设置mysql
 
-```
+```sql
 mysql -u root -p
 # 修改密码
 ALTER USER 'root'@'localhost' IDENTIFIED BY '123456';
 # 设置远程连接
 CREATE USER 'root'@'127.0.0.1' IDENTIFIED BY '123456';
 CREATE USER 'root'@'::1' IDENTIFIED BY '123456';
+# 设置远程密码
 CREATE USER 'root'@'%' IDENTIFIED   WITH mysql_native_password  BY '123456';
+# 授予所有权限
+GRANT ALL ON *.* TO 'root'@'%';
 flush privileges;
 ```