Ubuntu 16.10 apt-get update failed

because the mysql installation using apt-get install cannot find package, it is apt-get update according to the search solution. But almost all the methods were tried and failed. I don"t know how they installed it successfully. Error message: 

Reading package lists... Done
W: The repository "https://mirrors.tuna.tsinghua.edu.cn/ubuntu yakkety Release" does not have a Release file.
N: Data from such a repository can"t be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository "https://mirrors.tuna.tsinghua.edu.cn/ubuntu yakkety-updates Release" does not have a Release file.
N: Data from such a repository can"t be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository "https://mirrors.tuna.tsinghua.edu.cn/ubuntu yakkety-backports Release" does not have a Release file.
N: Data from such a repository can"t be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository "https://mirrors.tuna.tsinghua.edu.cn/ubuntu yakkety-security Release" does not have a Release file.
N: Data from such a repository can"t be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch https://mirrors.tuna.tsinghua.edu.cn/ubuntu/dists/yakkety/main/binary-amd64/Packages  404  Not Found
E: Failed to fetch https://mirrors.tuna.tsinghua.edu.cn/ubuntu/dists/yakkety-updates/main/binary-amd64/Packages  404  Not Found
E: Failed to fetch https://mirrors.tuna.tsinghua.edu.cn/ubuntu/dists/yakkety-backports/main/binary-amd64/Packages  404  Not Found
E: Failed to fetch https://mirrors.tuna.tsinghua.edu.cn/ubuntu/dists/yakkety-security/main/binary-amd64/Packages  404  Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.
Apt-get ubuntu
Mar.26,2022

you need to understand the Ubuntu development cycle. The version you are using is no longer maintained and the software repository has been officially removed.

https://wiki.ubuntu.com/Releases

you should use the previous LTS version (16.04) or the next LTS version (18.04)

if there is really a reason to use the EOL version, there is a temporary solution to deal with it, that is, to use ubuntu's EOL Release repository:

https://help.ubuntu.com/commu.

Previous: React writes Xiongpang account and wants to share the title and picture set by himself.

Next: Does flutter have a good selector recommended by widget or third-party libraries?

css mysql arrays josn react html typescript webpack npm sass R objective-c .net sql-server jquery python-3.x angularjs django angular excel regex iphone ajax linux xml pandas vba spring database wordpress string wpf xcode windows bash postgresql oracle multithreading eclipse list firebase algorithm macos forms image scala visual-studio azure bootstrap spring-boot react-native python-2.7 docker performance function winforms matlab powershell apache dataframe api sqlite numpy rest shell selenium flutter dart maven loops qt swing android-studio csv express file class tensorflow sorting codeigniter perl
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e3e34d-44790.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e3e34d-44790.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?