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Ubuntu, gagal update karena "The following signatures couldn't be verified"

Posted by Prayitna Kuswidianta on 10th July 2015

Ubuntu gagal update dengan pesan "The following signatures couldn't be verified"

# sudo apt-get update

Ign http://repo.zabbix.com precise/main Translation-en_US
Ign http://repo.zabbix.com precise/main Translation-en
Fetched 13.3 kB in 5s (2,570 B/s)
Reading package lists... Done
W: GPG error: http://repo.zabbix.com precise Release: The following signatures c ouldn't be verified because the public key is not available: NO_PUBKEY D13D58E47 9EA5ED4

Apakah yang harus dilakukan?

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Ubuntu, /boot penuh sehingga gagal update

Posted by Prayitna Kuswidianta on 10th July 2015

Server Ubuntu memakai versi 12.04, sudah lama dipakai dan terhubung dengan internet secara NAT.

Untuk detail release dapat dilihat sebagai berikut :

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04 LTS"

Dengan konfigurasi /boot yang kecil, maka untuk hari ini diketahui sudah penuh

# df -h

Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vmhoat232-root 127G 84G 37G 70% /
udev 3.9G 4.0K 3.9G 1% /dev
tmpfs 799M 352K 799M 1% /run
none 5.0M 0 5.0M 0% /run/lock
none 3.9G 0 3.9G 0% /run/shm
/dev/cciss/c0d0p1 228M 206M 11M 96% /boot

Apabila dilakukan update akan berakibat gagal, seperti pesan berikut ini :

# sudo apt-get update

Hit http://us.archive.ubuntu.com precise-backports/main Translation-en
Hit http://us.archive.ubuntu.com precise-backports/multiverse Translation-en
Hit http://us.archive.ubuntu.com precise-backports/restricted Translation-en
Get:64 http://us.archive.ubuntu.com precise-backports/universe Translation-en [35.0 kB]
Fetched 6,102 kB in 38s (160 kB/s)
Reading package lists... Done
W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://download.virtualbox.org precise Release: The following signatures were invalid: BADSIG 54422A4B98AB5139 Oracle Corporation (VirtualBox archive signing key) <info@virtualbox.org>

W: Failed to fetch http://download.virtualbox.org/virtualbox/debian/dists/precise/Release

W: Some index files failed to download. They have been ignored, or old ones used instead.

 

Apakah yang harus dilakukan ?

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Menulis file image (iso) ke CD RW di ubuntu

Posted by kusprayitna on 23rd December 2008

Kalau dalam bahasan sebelumnya telah saya tulis tentang cara membaca dan menulis file iso dengan menggunakan OS Windows, maka kali ini akan saya sajikan tentang cara menulis file ISO ke CD RW menggunakan ubuntu.

Disini saya gunakan ubuntu feisty (7.04).

Dalam ubuntu tersedia sebuah command line namanya "wodim" dimana fungsinya untuk menulis file iso ke CD.

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Posted in command line, Linux, Ubuntu | No Comments »