I am experiencing the following error when running apt update
which is causing me to be unable to update the Ubuntu server.
~$ sudo apt update
Ign:1 http://security.ubuntu.com/ubuntu impish-security InRelease
Err:2 http://security.ubuntu.com/ubuntu impish-security Release
404 Not Found [IP: 91.189.91.39 80]
Hit:3 http://ppa.launchpad.net/oibaf/graphics-drivers/ubuntu impish InRelease
Ign:4 http://nova.clouds.archive.ubuntu.com/ubuntu impish InRelease
Ign:5 http://nova.clouds.archive.ubuntu.com/ubuntu impish-updates InRelease
Ign:6 http://nova.clouds.archive.ubuntu.com/ubuntu impish-backports InRelease
Err:7 http://nova.clouds.archive.ubuntu.com/ubuntu impish Release
404 Not Found [IP: 185.125.190.41 80]
Err:8 http://nova.clouds.archive.ubuntu.com/ubuntu impish-updates Release
404 Not Found [IP: 185.125.190.41 80]
Err:9 http://nova.clouds.archive.ubuntu.com/ubuntu impish-backports Release
404 Not Found [IP: 185.125.190.41 80]
Get:12 https://download.docker.com/linux/ubuntu impish InRelease [48.9 kB]
Get:10 https://packagecloud.io/netdata/netdata-edge/ubuntu impish InRelease [24.8 kB]
Hit:11 https://packagecloud.io/netdata/netdata-repoconfig/ubuntu impish InRelease
Get:13 https://packagecloud.io/netdata/netdata-edge/ubuntu impish/main amd64 Packages [13.3 kB]
Reading package lists... Done
E: The repository 'http://security.ubuntu.com/ubuntu impish-security Release' no longer has a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository 'http://nova.clouds.archive.ubuntu.com/ubuntu impish Release' no longer has a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository 'http://nova.clouds.archive.ubuntu.com/ubuntu impish-updates Release' no longer has a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository 'http://nova.clouds.archive.ubuntu.com/ubuntu impish-backports Release' no longer has a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
As you can see ping resolves for the hostname:
~$ ping security.ubuntu.com
PING security.ubuntu.com (185.125.190.39) 56(84) bytes of data.
64 bytes from aerodent.canonical.com (185.125.190.39): icmp_seq=1 ttl=51 time=75.4 ms
64 bytes from aerodent.canonical.com (185.125.190.39): icmp_seq=2 ttl=51 time=73.9 ms
64 bytes from aerodent.canonical.com (185.125.190.39): icmp_seq=3 ttl=51 time=73.9 ms
64 bytes from aerodent.canonical.com (185.125.190.39): icmp_seq=4 ttl=51 time=74.5 ms
64 bytes from aerodent.canonical.com (185.125.190.39): icmp_seq=5 ttl=51 time=74.4 ms
To be clear, I have auto-update turned on on the Ubuntu server and this happened recently (past week or 2). Please help!