安装mysql5.7备份出现上面报错

需要给账号权限

GRANT PROCESS ON *.* TO '数据库用户'@'localhost';

flush privileges;

ERROR: The certificate of `url' is not trusted.

ERROR: The certificate of `url' hasn't got a known issuer.

If you are using Debian or Ubuntu, install the ca-certificates package:

$ sudo apt-get install ca-certificates

If you don't care about checking the validity of the certificate, use the --no-check-certificate option:

$ wget --no-check-certificate https://download/url

Note: The second option is not recommended because of the possibility of a man-in-the-middle attack.

 rm /var/lib/dpkg/lock

dpkg --configure -a

 Make sure “build-essential” package is installed on your Debian/Ubuntu machine. Login to you Linux with SSH and follow steps below:

cd /opt/
git clone https://github.com/Wind4/vlmcsd/releases
useradd -s /usr/sbin/nologin -r -M vlmcsd
cd /opt/linux-kms-server/vlmcsd/
make

Wait for it to finish, if there are no errors/warning continue with following:

nano /lib/systemd/system/vlmcsd.service

Add following to file:

[Unit]
Description=vlmcsd KMS emulator service
After=network-online.target
Wants=network-online.target 

[Service]
Type=forking
User=vlmcsd
ExecStart=/opt/linux-kms-server/vlmcsd/vlmcsd -l /var/log/vlmcsd/vlmcsd.log 

[Install]
WantedBy=multi-user.target

Save the file and continue creating the log folder and configure the permissions:

mkdir /var/log/vlmcsd
chown vlmcsd:vlmcsd /var/log/vlmcsd
systemctl enable vlmcsd
systemctl start vlmcsd

To verify the status if the service is running, run following:

systemctl status vlmcsd

If everything is fine, it should look like this:

root@kms:~# systemctl status vlmcsd
● vlmcsd.service - vlmcsd KMS emulator service
Loaded: loaded (/lib/systemd/system/vlmcsd.service; enabled; vendor preset: enabled)
Active: active (running) since Sat 2020-05-02 22:33:16 CEST; 42s ago
Process: 457 ExecStart=/opt/linux-kms-server/vlmcsd/vlmcsd -l /var/log/vlmcsd/vlmcsd.log (code=exited, status=0/SUCCESS)
Main PID: 466 (vlmcsd)
Tasks: 1 (limit: 1059)
Memory: 396.0K
CGroup: /system.slice/vlmcsd.service
└─466 /opt/linux-kms-server/vlmcsd/vlmcsd -l /var/log/vlmcsd/vlmcsd.log

The Vps is too old to get a newer OS from the provider.

1. create /etc/apt/sources.list.d/jessie-backports.list, and fill in the following lines

deb http://archive.debian.org/debian jessie-backports main
deb http://archive.debian.org/debian jessie-backports-sloppy main

2. apt-get update -o Acquire::Check-Valid-Until=false
3. apt-get install shadowsocks-libev

the -o Acquire::Check-Valid-Until=false is the key information. Hope it is helpful.

sudo apt-get install git build-essential cmake libuv1-dev libssl-dev libhwloc-dev

git clone https://github.com/xmrig/xmrig.git

cd xmrig

#将捐赠级别重置为 0

sed -i ' s/kDefaultDonateLevel = 5/kDefaultDonateLevel = 0/1 ' src/donate.h

sed -i ' s/kMinimumDonateLevel = 1/kMinimumDonateLevel = 0/1 ' src/donate.h

mkdir build

cd build

cmake ..   (或者cmake .. -DARM_TARGET=7 （arm v7）)

make

https://xmrig.com/wizard创建 config.json文件

{

    "autosave": true,

    "cpu": true,

    "opencl": false,

    "cuda": false,

    "pools": [

        {

            "url": "pool.supportxmr.com:5555",

            "user": "46N2Ce9HFVATtz5JrdP5gt72sqYZ3vvzDdY3rJsbyU8pfErmc8ThU646Mbji78wh1AQS7Jjpo28voCrJpHZPaUa5PX7dzPG",

            "pass": "sbbb",

            "keepalive": true,

            "tls": false

        }

    ]

}

1、下载地址：https://github.com/fatedier/frp/releases

2、下载对应的安装包，解压，在服务器上直接配置frps.ini文件即可

[common]
bind_port = **** // 服务端与客户端对应的端口
vhost_http_port = **** //客户端http端口
token = **** //服务端与客户端密匙
dashboard_port = *** //frps服务端面板端口
dashboard_user = *** //frps服务端面板登陆用户名
dashboard_pwd = **** //frps服务端面板登陆密码

3、配置服务自启动，在下载安装包里有个sytemd文件夹，修改frps.services里对应的frps.ini文件路径，将frps.service拷贝到/etc/systemd/system文件夹中，运行systemctl enable frps systemctl start frps即可，这样服务端就配置完成了。

4、客户端也同样下载对应的版本，然后配置frpc.ini文件即可

[common]
server_addr = 服务器IP地址
server_port = ** //同服务器端一样
token = ** //同服务器端一样

[web]
type = http
local_port = 80
custom_domains = ***.shaogroup.com

[static_file]
type = tcp
remote_port = 8090
plugin = static_file
plugin_local_path = /mnt/movie 暴露的文件夹
plugin_strip_prefix = static
plugin_http_user = *** 访问的用户名
plugin_http_passwd = **** 访问的密码

1、安装CurlFtpFS

Debian/Ubuntu系统

apt-get install curlftpfs -y

2、挂载FTP

创建目录，路径及名称自己定

mkdir /home/ftp

挂载FTP

curlftpfs ftp.yourserver.com /home/ftp -o user=username:password

ftp.yourserver.com #FTP地址
/home/ftp #本地目录
username #FTP用户名
password #FTP密码

输入df -h命令查看下是否挂载成功。
最后可以将文件上传至本地文件夹/home/ftp进行备份了。

如果在挂载的时候出现如下错误：
fuse: mountpoint is not empty
fuse: if you are sure this is safe, use the ‘nonempty’ mount option
最简单的解决方法就是让挂载的本地目录变成空文件夹即可。

You have to add /sbin to your PATH:

PATH=”/sbin:$PATH”
vagrant@stretch:~$ command -v fdisk /sbin/fdisk