Problem: The user was unable to update ubuntu due the error shown below-
pmt@v-ng-01dd:~$ sudo apt-get update
[sudo] password for pmt:
Get:1 ftp://mirror.cse.iitk.ac.in trusty-updates Release.gpg [933 B]
<snip> … <snip>Hit ftp://mirror.cse.iitk.ac.in trusty-security/universe Translation-en
Fetched 855 kB in 48s (17.8 kB/s)
Reading package lists… Done
W: There is no public key available for the following key IDs:
3B4FE6ACC0B21F32
W: There is no public key available for the following key IDs:
3B4FE6ACC0B21F32
W: There is no public key available for the following key IDs:
3B4FE6ACC0B21F32
W: There is no public key available for the following key IDs:
3B4FE6ACC0B21F32
Solution:
pmt@v-ng-01dd:~$ sudo apt-get install debian-keyring debian-archive-keyring
Reading package lists… Done
Building dependency tree
Reading state information… Done
The following NEW packages will be installed:
debian-archive-keyring debian-keyring
0 upgraded, 2 newly installed, 0 to remove and 1309 not upgraded.
Need to get 48.7 MB of archives.
<snip> … <snip>
Setting up debian-archive-keyring (2012.4) …
Setting up debian-keyring (2014.03.03) …
pmt@v-ng-01dd:~$ sudo apt-key update
gpg: key 437D05B5: “Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>” not changed
gpg: key FBB75451: “Ubuntu CD Image Automatic Signing Key <cdimage@ubuntu.com>” not changed
gpg: Total number processed: 2
gpg: unchanged: 2
pmt@v-ng-01dd:~$root@v-ng-01dd:~# gpg –recv-keys 3B4FE6ACC0B21F32
root@v-ng-01dd:~# gpg –export 3B4FE6ACC0B21F32 | apt-key add –
Reference:
Whiteboard 