hadoop@hadoop-PC:/var/log$ sudo apt update
忽略:1 https://com-store-packages.uniontech.com/appstore deepin InRelease
错误:2 https://com-store-packages.uniontech.com/appstore deepin Release
Certificate verification failed: The certificate is NOT trusted. The certificate issuer is unknown. Could not handshake: Error in the certificate verification. [IP: 120.77.173.206 443]
忽略:3 https://community-packages.deepin.com/deepin apricot InRelease
忽略:4 https://community-packages.deepin.com/printer eagle InRelease
忽略:5 https://pro-driver-packages.uniontech.com eagle InRelease
错误:6 https://community-packages.deepin.com/deepin apricot Release
Certificate verification failed: The certificate is NOT trusted. The certificate issuer is unknown. Could not handshake: Error in the certificate verification. [IP: 223.111.183.30 443]
错误:7 https://pro-driver-packages.uniontech.com eagle Release
Certificate verification failed: The certificate is NOT trusted. The certificate issuer is unknown. Could not handshake: Error in the certificate verification. [IP: 111.178.11.150 443]
错误:8 https://community-packages.deepin.com/printer eagle Release
Certificate verification failed: The certificate is NOT trusted. The certificate issuer is unknown. Could not handshake: Error in the certificate verification. [IP: 223.111.183.30 443]
忽略:9 https://linux.teamviewer.com/deb stable InRelease
错误:10 https://linux.teamviewer.com/deb stable Release
Certificate verification failed: The certificate is NOT trusted. The certificate issuer is unknown. Could not handshake: Error in the certificate verification. [IP: 13.225.118.70 443]
正在读取软件包列表... 完成
W: https://com-store-packages.uniontech.com/appstore/dists/deepin/InRelease: No system certificates available. Try installing ca-certificates.
W: https://pro-driver-packages.uniontech.com/dists/eagle/InRelease: No system certificates available. Try installing ca-certificates.
W: https://com-store-packages.uniontech.com/appstore/dists/deepin/Release: No system certificates available. Try installing ca-certificates.
W: https://community-packages.deepin.com/deepin/dists/apricot/InRelease: No system certificates available. Try installing ca-certificates.
E: 仓库 “https://com-store-packages.uniontech.com/appstore deepin Release” 不再含有 Release 文件。
N: 无法安全地用该源进行更新，所以默认禁用该源。
N: 参见 apt-secure(8) 手册以了解仓库创建和用户配置方面的细节。
W: https://community-packages.deepin.com/printer/dists/eagle/InRelease: No system certificates available. Try installing ca-certificates.
W: https://community-packages.deepin.com/deepin/dists/apricot/Release: No system certificates available. Try installing ca-certificates.
W: https://pro-driver-packages.uniontech.com/dists/eagle/Release: No system certificates available. Try installing ca-certificates.
E: 仓库 “https://community-packages.deepin.com/deepin apricot Release” 不再含有 Release 文件。
N: 无法安全地用该源进行更新，所以默认禁用该源。
N: 参见 apt-secure(8) 手册以了解仓库创建和用户配置方面的细节。
E: 仓库 “https://pro-driver-packages.uniontech.com eagle Release” 不再含有 Release 文件。
N: 无法安全地用该源进行更新，所以默认禁用该源。
N: 参见 apt-secure(8) 手册以了解仓库创建和用户配置方面的细节。
W: https://community-packages.deepin.com/printer/dists/eagle/Release: No system certificates available. Try installing ca-certificates.
E: 仓库 “https://community-packages.deepin.com/printer eagle Release” 不再含有 Release 文件。
N: 无法安全地用该源进行更新，所以默认禁用该源。
N: 参见 apt-secure(8) 手册以了解仓库创建和用户配置方面的细节。
W: https://linux.teamviewer.com/deb/dists/stable/InRelease: No system certificates available. Try installing ca-certificates.
W: https://linux.teamviewer.com/deb/dists/stable/Release: No system certificates available. Try installing ca-certificates.
E: 仓库 “https://linux.teamviewer.com/deb stable Release” 不再含有 Release 文件。
N: 无法安全地用该源进行更新，所以默认禁用该源。
N: 参见 apt-secure(8) 手册以了解仓库创建和用户配置方面的细节。

是ssl证书问题

参考这个文档，把公钥下载下来就好了。

https://blog.csdn.net/weixin_44172434/article/details/89160720

老哥，你怎么能够怀疑可能是我电脑断网了呢，都用linux了，会犯这么低级的错误吗？

sudo apt install ca-certificates

参考网址：https://askubuntu.com/questions/1095266/apt-get-update-failed-because-certificate-verification-failed-because-handshake/1145374#1145374?newreg=52a91dd4a1e343a8a32f52b3c45c7c8f