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ubuntu apt update 에러

캐세이 2023. 5. 9. 10:33

우분투에서 update 실행중 공개키가 없어서 인증에러 발생

# apt update
Get:1 http://dl.google.com/linux/chrome/deb stable InRelease [1,825 B]
Err:1 http://dl.google.com/linux/chrome/deb stable InRelease                                                                                                                                   
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 4EB27DB2A3B88B8B

248 packages can be upgraded. Run 'apt list --upgradable' to see them.
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://dl.google.com/linux/chrome/deb stable InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 4EB27DB2A3B88B8B
W: Failed to fetch http://dl.google.com/linux/chrome/deb/dists/stable/InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 4EB27DB2A3B88B8B
W: Some index files failed to download. They have been ignored, or old ones used instead.


조치방법
# sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 4EB27DB2A3B88B8B
Executing: /tmp/apt-key-gpghome.tA7tDy4gQy/gpg.1.sh --keyserver keyserver.ubuntu.com --recv-keys 4EB27DB2A3B88B8B
gpg: key 7721F63BD38B4796: 8 duplicate signatures removed
gpg: key 7721F63BD38B4796: 18 signatures not checked due to missing keys
gpg: key 7721F63BD38B4796: "Google Inc. (Linux Packages Signing Authority) <linux-packages-keymaster@google.com>" 19 new signatures
gpg: key 7721F63BD38B4796: "Google Inc. (Linux Packages Signing Authority) <linux-packages-keymaster@google.com>" 2 new subkeys
gpg: Total number processed: 1
gpg:            new subkeys: 2
gpg:         new signatures: 19

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