When we add new data: # vi /etc/apt/sources.list ... deb http://deb.debian.org/debian stretch main contrib non-free deb-src http://deb.debian.org/debian stretch main contrib non-free
we got some errors below:
# apt-get update Hit:1 http://archive.ubuntu.com/ubuntu bionic InRelease Get:2 http://archive.ubuntu.com/ubuntu bionic-security InRelease [83.2 kB] Get:3 http://archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB] Fetched 172 kB in 2s (73.3 kB/s) Reading package lists... Done root@netsgn:~/soft# nano /etc/apt/sources.list root@netsgn:~/soft# apt-get update Hit:1 http://archive.ubuntu.com/ubuntu bionic InRelease Get:2 http://archive.ubuntu.com/ubuntu bionic-security InRelease [83.2 kB] Get:3 http://archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB] Get:4 https://packagecloud.io/grafana/stable/debian stretch InRelease [23.2 kB] Err:4 https://packagecloud.io/grafana/stable/debian stretch InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 37BBEE3F7AD95B3F
Fix:
# sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 8B48AD6246925553
If we receive an error like below, it looks like you are behind firewall:
Executing: /tmp/apt-key-gpghome.04owBwsfXq/gpg.1.sh --keyserver keyserver.ubuntu.com --recv-keys 8B48AD6246925553 gpg: keyserver receive failed: End of file
Some command to debug:
soft# gpg -vvv --debug-all --recv-keys --keyserver keyserver.ubuntu.com --recv-keys 8B48AD6246925553