最近重新安裝一台 Server，安裝好 squid Proxy Server，按照之前的設定方式做了設定，啟動時卻一直出現錯誤。
# service squid start
正在啟動 squid：……………….. [失敗]
檢視 /var/log/message 中的訊息，發現如下的錯誤訊息
Sep 30 11:05:39 free squid[16500]: Squid Parent: child process 16516 started
Sep 30 11:05:39 free (squid): commonUfsDirOpenSwapLog: Failed to open swap log.
Sep 30 11:05:39 free squid[16500]: Squid Parent: child process 16516 exited with status 1
Sep 30 11:05:42 free squid[16500]: Squid Parent: child process 16522 started
Sep 30 11:05:43 free (squid): commonUfsDirOpenSwapLog: Failed to open swap log.
Sep 30 11:05:43 free squid[16500]: Squid Parent: child process 16522 exited with status 1
Sep 30 11:05:46 free squid[16500]: Squid Parent: child process 16529 started
Sep 30 11:05:46 free (squid): commonUfsDirOpenSwapLog: Failed to open swap log.
Sep 30 11:05:46 free squid[16500]: Squid Parent: child process 16529 exited with status 1
Sep 30 11:05:46 free squid[16500]: Exiting due to repeated, frequent failures
[@more@]解決的方式如下：
# vim /etc/squid/squid.conf
加入下面一行
cache_swap_log /var/log/squid/swap.log squid
重新啟動 squid Proxy Server
# service squid start
正在啟動 squid：. [ 確定 ]