安装kata

echo "deb http://download.opensuse.org/repositories/home:/katacontainers:/release/xUbuntu_$(lsb_release -rs)/ /" > /etc/apt/sources.list.d/kata-containers.list
curl -sL http://download.opensuse.org/repositories/home:/katacontainers:/release/xUbuntu_$(lsb_release -rs)/Release.key | sudo apt-key add -
apt update && apt -y install kata-runtime kata-proxy kata-shim

root@ubuntu:/home/ubuntu# echo "deb http://download.opensuse.org/repositories/home:/katacontainers:/release/xUbuntu_$(lsb_release -rs)/ /" > /etc/apt/sources.list.d/kata-containers.list
root@ubuntu:/home/ubuntu# curl -sL http://download.opensuse.org/repositories/home:/katacontainers:/release/xUbuntu_$(lsb_release -rs)/Release.key | sudo apt-key add -
gpg: no valid OpenPGP data found.

root@ubuntu:~/kata# apt-key add linux_signing_key.pub 
OK

http://download.opensuse.org/repositories/home:/katacontainers:/releases:/

ubuntu@ubuntu:~$ snap list
Name  Version    Rev   Tracking       Publisher   Notes
core  16-2.46.1  9994  latest/stable  canonical✓  core
ubuntu@ubuntu:~$ 

root@ubuntu:~# snap install kata-containers --classic
2020-09-29T16:34:54+08:00 INFO Waiting for restart...
error: cannot perform the following tasks:
- Download snap "kata-containers" (686) from channel "stable" (Get https://api.snapcraft.io/api/v1/snaps/download/oTlBRwmiNP4yYPYhhAipQPZ5RPvOpuOm_686.snap: EOF)
root@ubuntu:~# snap install kata-containers

执行“wget -q -O - https://dl.google.com/linux/linux_signing_key.pub | sudo apt-key add -”命令时出现该标题错误提示，于是将该命令分开操作，第一步：用浏览器访问https://dl-ssl.google.com/linux/linux_signing_key.pub（或许需要梯子），然后会下载一个名为linux_signing_key.pub的文件在本地；接下来第二步：sudo apt-key add linux_signing_key.pub，然后成功。