ClamAV無法更新錯誤解決

檢查ClamAV更新日誌發現更新出錯
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ClamAV update process started at Fri Mar  7 06:30:17 2008
WARNING: Your ClamAV installation is OUTDATED!
WARNING: Local version: 0.91.1 Recommended version: 0.92.1
DON'T PANIC! Read
main.inc is up to date (version: 45, sigs: 169676, f-level: 21, builder: sven)
ERROR: Can't get information about database.clamav.net: Host not found
ERROR: getpatch: Can't download daily-5630.cdiff from database.clamav.net
ERROR: Can't get information about database.clamav.net: Host not found
ERROR: getpatch: Can't download daily-5630.cdiff from database.clamav.net
ERROR: Can't get information about database.clamav.net: Host not found
ERROR: getpatch: Can't download daily-5630.cdiff from database.clamav.net
WARNING: Incremental update failed, trying to download daily.cvd
ERROR: Can't get information about database.clamav.net: Host not found
ERROR: Can't download daily.cvd from database.clamav.net
Trying again in 5 secs...
ClamAV update process started at Fri Mar  7 06:30:22 2008
WARNING: Your ClamAV installation is OUTDATED!
WARNING: Local version: 0.91.1 Recommended version: 0.92.1
DON'T PANIC! Read
main.inc is up to date (version: 45, sigs: 169676, f-level: 21, builder: sven)
ERROR: Can't get information about database.clamav.net: Host not found
ERROR: getpatch: Can't download daily-5630.cdiff from database.clamav.net
ERROR: Can't get information about database.clamav.net: Host not found
ERROR: getpatch: Can't download daily-5630.cdiff from database.clamav.net
ERROR: Can't get information about database.clamav.net: Host not found
ERROR: getpatch: Can't download daily-5630.cdiff from database.clamav.net
WARNING: Incremental update failed, trying to download daily.cvd
ERROR: Can't get information about database.clamav.net: Host not found
ERROR: Can't download daily.cvd from database.clamav.net
Giving up on database.clamav.net...
Update failed. Your network may be down or none of the mirrors listed in freshclam.conf is working. Check for possible reasons.


測試ping任何一個外網網站都報'unknown host',返回錯誤

檢查發現/etc/nsswitch.conf 檔案配置有誤
原設定  hosts:      files
修改後設定  hosts:      files dns