記錄騰訊雲使用日誌

1.ubuntu系統的電腦鏈接騰訊雲出現的問題

今天電腦鏈接重裝系統以後的騰訊雲服務器出現如下問題：

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@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
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IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that a host key has just been changed.
The fingerprint for the ECDSA key sent by the remote host is
SHA256:+HqFf10oiDU2Yjkx7ND655NmUJmQfw3AYnqmAVwntFE.
Please contact your system administrator.
Add correct host key in /root/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /root/.ssh/known_hosts:1
  remove with:
  ssh-keygen -f "/root/.ssh/known_hosts" -R "xxx.xxxx.xx"
ECDSA host key for xxx.xxxx.xx has changed and you have requested strict checking.
Host key verification failed.
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主要緣由是以前電腦鏈接過服務器，服務器把登陸標識證書記錄下來，下次登陸時會去比對以前的記錄，因爲服務器的系統重裝標識變了致使不能繼續登陸，解決方案是打開電腦的命令行執行 ssh-keygen -R 服務器公網ip ，便可解決這個問題，而後再執行 ssh 用戶名@公網ip ,便可鏈接成功

2.centos7使用yum install安裝wget無效的問題:

1.下載wget…tar.gz文件，拷貝到linux
下載地址: https://mirrors.ustc.edu.cn/gnu/wget/

2.解壓tar -zxvf wget…tar.gz

3.cd到解壓後的文件夾，能夠看到configure命令
./configure --with-ssl=openssl
make
make install
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3.activemq啓動報錯信息爲nested exception is java.net.URISyntaxException: Illegal character in hostname at index 7: ws://VM_0_9_centos:61614?maximumConnections=1000&wireFormat.maxFrameSize=104 857600

解決地址: www.cnblogs.com/likui360/p/…

4.mysql啓動報 181228 11:47:05 [ERROR] Do you already have another mysqld server running on socket: /var/lib/mysql/mysql.sock ?

解決方法：chmod 777 /var/lib/mysql 給權限就好了