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更新笔记。
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jacky committed Mar 30, 2024
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2 changes: 1 addition & 1 deletion .obsidian/appearance.json
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Expand Up @@ -3,5 +3,5 @@
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49 changes: 25 additions & 24 deletions .obsidian/workspace.json
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Expand Up @@ -13,7 +13,7 @@
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Expand All @@ -102,7 +102,7 @@
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Expand All @@ -125,7 +125,7 @@
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Expand All @@ -149,32 +149,33 @@
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"docs/Linux/Linux Tips.md",
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15 changes: 15 additions & 0 deletions docs/DM/达梦安装.md
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Expand Up @@ -366,4 +366,19 @@ $ ./DmServiceDM restart
查看数据库状态
```
$ ./DmServiceDM status
```

## 常用操作

登录数据库
```
# ./disql
disql V8
用户名:<username>
密码:
```

查看有哪些数据库
```
```
65 changes: 64 additions & 1 deletion docs/Java/Tips.md
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Expand Up @@ -4,4 +4,67 @@

RabbitMQ 或者 Kafka 的异常处理机制。

该怎么控制消费逻辑。如果一直不停的重新消费可能会造成严重的问题，如果说有三步消费逻辑，第一步下载文件，第二步发生了异常，那么不停的重新消费肯能会导致磁盘问题。
该怎么控制消费逻辑。如果一直不停的重新消费可能会造成严重的问题，如果说有三步消费逻辑，第一步下载文件，第二步发生了异常，那么不停的重新消费肯能会导致磁盘问题。

## Java Jar 包部署脚本

```shell
#!/bin/bash

APP_NAME=<jar_file>
APP_JVM_OPTS=<jvm_options>

usage() {
echo "Usage: sh service.sh [start|stop|restart|status]"
exit 1
}

is_exist() {
pid=`ps -ef | grep ${APP_NAME} | grep -v grep | awk '{print $2}'`
if [ -z "${pid}" ]; then
return 1
else
return 0
fi
}

start() {
is_exist
if [ $? -eq "0" ]; then
echo "${APP_NAME} is already running, pid=${pid}"
else
nohup java $APP_JVM_OPTS -jar $APP_NAME --spring.profiles.active=stage >/dev/null 2>&1 &
fi
}

stop() {
is_exist
if [ $? -eq "0" ]; then
kill -9 $pid
else
echo "$APP_NAME is not running"
fi
}

status() {
is_exist
if [ $? -eq "0" ]; then
echo "${APP_NAME} is running. pid is ${pid}"
else
echo "$APP_NAME is not running"
fi
}

restart() {
stop
start
}

case "$1" in
"start") start ;;
"stop") stop ;;
"status") status ;;
"restart") restart ;;
*) usage;;
esac
```
25 changes: 14 additions & 11 deletions docs/Kafka/Kafka ACL.md
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Expand Up @@ -4,36 +4,39 @@ tags:
- Kafka
---
### Topic

创建 Topic。
```shell
bin/kafka-topics.sh — bootstrap-server localhost:9092 --create --topic quickstart-events [--partitions num] [--replication-factor num] --command-config admin-jaas
```

### 生产
赋予 `yunlu` 用户向 Topic `quickstart-events` 写入权限。

赋予 `usera` 用户向 Topic `quickstart-events` 写入权限。
```shell
bin/kafka-acls.sh --bootstrap-server localhost:9092 --add --allow-principal User:yunlu --operation Write --topic quickstart-events --command-config admin-jaas
bin/kafka-acls.sh --bootstrap-server localhost:9092 --add --allow-principal User:usera --operation Write --topic quickstart-events --command-config admin-jaas
```

测试
```shell
bin/kafka-console-producer.sh --bootstrap-server localhost:9092 --topic quickstart-events --producer.config yunlu-jaas
bin/kafka-console-producer.sh --bootstrap-server localhost:9092 --topic quickstart-events --producer.config usera-jaas
```

### 消费
赋予 `yunlu` 用户使用 `yunlu` 消费者组消费 Topic `quickstart-events` 的权限。

赋予 `usera` 用户使用 `usera` 消费者组消费 Topic `quickstart-events` 的权限。
```shell
bin/kafka-acls.sh --bootstrap-server localhost:9092 --add --allow-principal User:yunlu --operation Read --topic quickstart-events --group yunlu --command-config admin-jaas
bin/kafka-acls.sh --bootstrap-server localhost:9092 --add --allow-principal User:usera --operation Read --topic quickstart-events --group usera --command-config admin-jaas
```

测试
```shell
bin/kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic quickstart-events --from-beginning --group yunlu --consumer.config yunlu-jaas
bin/kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic quickstart-events --from-beginning --group usera --consumer.config usera-jaas
```

赋予 `yunlu` 用户对所有 Topic 的读取权限。
```
bin/kafka-acls.sh ----bootstrap-server localhost:9092 --add --allow-principal User:yunlu --operation Read --topic '*' --group '*' --command-config admin-jaas
赋予 `usera` 用户对所有 Topic 的读取权限。
```shell
bin/kafka-acls.sh ----bootstrap-server localhost:9092 --add --allow-principal User:usera --operation Read --topic '*' --group '*' --command-config admin-jaas
```

### 配置
Expand All @@ -44,7 +47,7 @@ bin/kafka-acls.sh --bootstrap-server localhost:9092 --list [--principal User:use
```


删除 `yunlu` 用户对 Topic `quickstart-event` 的读取权限。
删除 `usera` 用户对 Topic `quickstart-event` 的读取权限。
```shell
bin/kafka-acls.sh --bootstrap-server localhost:9092 --remove --allow-principal User:yunlu --operation Read --topic quickstart-events --command-config admin-jaas
bin/kafka-acls.sh --bootstrap-server localhost:9092 --remove --allow-principal User:usera --operation Read --topic quickstart-events --command-config admin-jaas
```
10 changes: 10 additions & 0 deletions docs/Linux/Linux Tips.md
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Expand Up @@ -69,3 +69,13 @@ ssh-keygen -t rsa
2. 新建 Linux ~/.ssh/authorized_keys 文件，将 Win 的公钥内容粘贴进来。
3. 设置 authorized_keys 文件的权限，只能自己读写：`chmod 0600 ~/.ssh/auhtorized_keys`

## 超时自动退出

可以在 /etc/profile 文件设置变量 $TMOUT，单位为秒。

## 查询机器上次启动时间

```
who -b
```

9 changes: 5 additions & 4 deletions docs/Tips/开发规范.md
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Expand Up @@ -7,15 +7,15 @@

## 数据库规范

### 账号规范
### 账号

数据库 root 账号仅能供 DBA 使用，服务或者第三方必须单独创建账号赋予指定的权限。
数据库 `root` 账号仅能供 DBA 使用，服务或者第三方必须单独创建账号赋予指定的权限。

### 注释规范
### 注释

SQL 语句一定要包含注释，包括表的注释和字段的注释。如果字段的实际意义发生变化，则要及时更新数据库的注释信息。

### 必填约束字段
### 建表字段

`id` 字段必填，自增设置为主键。

Expand All @@ -28,6 +28,7 @@ create table user(
) comment '用户信息表';
```


## 接口规范

针对单表的增删改查，例如 user 表：
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