官方文档
https://developers.cloudflare.com/warp-client/get-started/linux/
第三方文档https://blog.csdn.net/mashiqing/article/details/130010614
脚本
`bash <(curl -fsSL git.io/warp.sh) menu`
https://p3terx.com/archives/cloudflare-warp-configuration-script.html

服务器套warp访问chatgpt

hbase启动后自动关闭
hadoop namemode日志显示
```
2023-04-12 00:50:38,889 WARN org.apache.hadoop.hdfs.server.namenode.NameNodeResourceChecker: Space available on volume '/dev/mapper/ubuntu--vg-ubuntu--lv' is 67026944, which is below the configured reserved amount 104857600
2023-04-12 00:50:38,890 WARN org.apache.hadoop.hdfs.server.namenode.FSNamesystem: NameNode low on available disk space. Already in safe mode.
```
执行
`hdfs dfsadmin -safemode leave`

hbase 关闭安全模式

```c++
setAttribute(Qt::WA_TranslucentBackground);
    setWindowFlags(Qt::FramelessWindowHint);

QPalette palette = QPalette();
    palette.setColor(QPalette::Background, QColor(0x00,0xFF,0x00,0x00));
setPalette(palette);
```

qt设置背景透明但子控件不透明

众所周知，有些源会过期，导致我们升级的时候很难受。
以删除yarn Packaging 为例
删除方法：
```
momen@momen-PC:~$ sudo apt-key list
/etc/apt/trusted.gpg
--------------------

....

pub   rsa4096 2016-10-05 [SC]
      72EC F46A 56B4 AD39 C907  BBB7 1646 B01B 86E5 0310
uid           [ 未知 ] Yarn Packaging <yarn@dan.cx>
sub   rsa4096 2016-10-05 [E]

.....

/etc/apt/trusted.gpg.d/debian-archive-bullseye-automatic.gpg
........`
```
`sudo apt-key del 72ECF46A56B4AD39C907BBB71646B01B86E50310`

---

删除gpg
```bash
有 8 个软件包可以升级。请执行 ‘apt list --upgradable’ 来查看它们。
W: 校验数字签名时出错。此仓库未被更新，所以仍然使用此前的索引文件。GPG 错误：https://dl.yarnpkg.com/debian stable InRelease: 下列签名无效： EXPKEYSIG 23E7166788B63E1E Yarn Packaging <yarn@dan.cx>
W: 无法下载 https://dl.yarnpkg.com/debian/dists/stable/InRelease  下列签名无效： EXPKEYSIG 23E7166788B63E1E Yarn Packaging <yarn@dan.cx>
W: 部分索引文件下载失败。如果忽略它们，那将转而使用旧的索引文件。
```
```
momen@momen-PC:~$ sudo apt-key adv --recv-keys 23E7166788B63E1E
Executing: /tmp/apt-key-gpghome.lHHtgSUDcP/gpg.1.sh --recv-keys 23E7166788B63E1E
gpg: 密钥 1646B01B86E50310：公钥 “Yarn Packaging <yarn@dan.cx>” 已导入
gpg: 处理的总数：1
gpg:               已导入：1
momen@momen-PC:~$
```

删除讨厌的源！((删除gpg或没有公钥的源)

bbr:
`wget -N --no-check-certificate "https://raw.githubusercontent.com/chiakge/Linux-NetSpeed/master/tcp.sh" && chmod +x tcp.sh && ./tcp.sh`
v2ray:
自动：
`bash <(curl -s -L https://raw.githubusercontent.com/xyz690/v2ray/master/go.sh)`
手动:
`bash <(curl -s -L https://raw.githubusercontent.com/xyz690/v2ray/master/install.sh)`
`bash <(curl -sL https://raw.githubusercontent.com/hiifeng/v2ray/main/install_v2ray.sh)`
x-ui面板：
`bash <(curl -Ls https://raw.githubusercontent.com/vaxilu/x-ui/master/install.sh)`