Is it possible that something in this squid.conf might cause a memory block
or excessive CPU usage that could lead to this:
It seems a coincidence that a server reboot seemed to fix the issue.
auth_param basic realm NameHere proxy server
auth_param basic credentialsttl 2 hours
auth_param basic program /usr/lib/squid/ncsa_auth /etc/squid/squid_passwd
authenticate_cache_garbage_interval 1 hour
authenticate_ip_ttl 2 hours
acl all src 0.0.0.0/0.0.0.0
acl manager proto cache_object
acl localhost src 127.0.0.1/255.255.255.255
acl to_localhost dst 127.0.0.0/8
acl SSL_ports port 443
acl Safe_ports port 80 # http
acl Safe_ports port 21 # ftp
acl Safe_ports port 443 # https
acl Safe_ports port 70 # gopher
acl Safe_ports port 210 # wais
acl Safe_ports port 1025-65535 # unregistered ports
acl Safe_ports port 280 # http-mgmt
acl Safe_ports port 488 # gss-http
acl Safe_ports port 591 # filemaker
acl Safe_ports port 777 # multiling http
acl Safe_ports port 1863 # MSN messenger
acl ncsa_users proxy_auth REQUIRED
acl maxuser max_user_ip -s 2
acl CONNECT method CONNECT
http_access deny manager
http_access allow ncsa_users
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access deny to_localhost
http_access deny maxuser
http_access allow localhost
http_access deny all
icp_access allow all
http_port 8080
http_port XX.XXX.XXX.198:80
hierarchy_stoplist cgi-bin ?
cache_mem 100 MB
maximum_object_size_in_memory 50 KB
cache_replacement_policy heap LFUDA
cache_dir aufs /var/spool/squid 40000 16 256
#cache_dir null /null
maximum_object_size 50 MB
cache_swap_low 90
cache_swap_high 95
access_log /var/log/squid/access.log squid
cache_log /var/log/squid/cache.log
cache_store_log none
buffered_logs on
acl QUERY urlpath_regex cgi-bin \?
cache deny QUERY
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern . 0 20% 4320
quick_abort_min 0 KB
quick_abort_max 0 KB
acl apache rep_header Server ^Apache
broken_vary_encoding allow apache
half_closed_clients off
visible_hostname NameHereProxyServer
log_icp_queries off
dns_nameservers 208.67.222.222 208.67.220.220
hosts_file /etc/hosts
memory_pools off
forwarded_for off
client_db off
coredump_dir /var/spool/squid
delay_pools 1
delay_class 1 2
delay_parameters 1 -1/-1 125000/125000
