Squid error fatal cannot open http port

squid error fatal cannot open http port

You will need to restart Squid service to take the new changes into effect. $ sudo systemctl restart squid. Open Ports in Squid Proxy. By. I have spent a lot of time googling this error but could not arrive at a solution which would configure squid as an HTTP proxy. How do I get. Squid is a proxy server, HTTP requests are sent to Squid instead of if you get a startup error: 'FATAL: Could not determine fully. squid error fatal cannot open http port

Regret: Squid error fatal cannot open http port

Mettler toledo jib, rf error 200
\?) 0 0% 0 refresh_pattern (Release off # Turn this on if you wish to log fully qualified domain names # in the access.log. To do this Squid does a DNS lookup of all # IP's connecting to it. This can (in some situations) increase # latency, which makes your cache seem slower for interactive # browsing. # #Default: # log_fqdn off # TAG: client_netmask # A netmask for client addresses in logfiles and cachemgr output. # Change this to protect strato youtube player an error occurred privacy of your cache clients. # A netmask of will log all IP's in that range with # the last digit set to '0'. # #Default: # client_netmask # OPTIONS FOR EXTERNAL SUPPORT PROGRAMS # ----------------------------------------------------------------------------- # TAG: ftp_user # If you want the anonymous login password to be more informative # (and enable the use of picky ftp servers), set this to something # reasonable for your domain, squid error fatal cannot open http port, like [email protected] # # The reason why this is domainless by default is that the # request can be made on the behalf of a user in any domain, # depending on how the cache is used. # Some ftp server also validate that the email address is valid # (for example perl.com). # #Default: #VEKIL #Eger proxy yolu ile ftp yaparsak, anonymous isteklerde bu adresi #verecek ftp_user [email protected] # TAG: ftp_list_width # Sets the width of ftp listings. This should be set to fit in # the width of a standard browser. Setting this too small # can cut off long filenames when browsing ftp sites. # #Default: # ftp_list_width 32 # TAG: ftp_passive # If your firewall does not allow Squid to use passive # connections, then turn off this option. # #Default: # ftp_passive on # TAG: cache_dns_program # Note: This option is only available if Squid is rebuilt with the # squid error fatal cannot open http port --disable-internal-dns option # # Specify the location of the executable for dnslookup process. # #Default: # cache_dns_program /usr/lib/squid/ # TAG: dns_children # Note: This option is only available if Squid is rebuilt with the # --disable-internal-dns option # # The number of processes spawn to service DNS squid error fatal cannot open http port lookups. # For heavily loaded caches on large servers, you should # probably increase this value to at least 10. The maximum # is 32. The default is 5, squid error fatal cannot open http port. # # You must have at least one dnsserver process. # #Default: # dns_children 5 # TAG: dns_retransmit_interval # Initial retransmit interval for DNS queries. The interval is # doubled each time all configured DNS servers have been tried. # # #Default: # dns_retransmit_interval 5 seconds # TAG: dns_timeout # DNS Query timeout. If no response is received to a DNS query # within this time then all DNS servers for the queried domain # is assumed to be unavailable. # #Default: # dns_timeout 5 minutes # TAG: dns_defnames on grep squid PID TTY STAT TIME COMMAND 2267 ? Ss 0:00 /usr/sbin/squid-ipv6 -D -sYC 2735 pts/0 S+ 0:00 grep squid 8893 ? Rl 2:57 (squid) -D -sYC 8894 ? Ss 0:17 /bin/bash /etc/squid3/helper/redirector.sh

You want the (squid) process id, squid error fatal cannot open http port, 8893 in this case.

The first solution is to create the PID file yourself and put the process id number there. For example:

echo 8893 > /usr/local/squid/logs/squid.pid
  • /!\ Be careful of file permissions. It's no use having a .pid file if squid can't update it when things change.

The second is to use the above technique to find the Squid process id. Then to send the process a HUP signal, which is the same as squid -k reconfigure:

kill -SIGHUP 8893

The reconfigure process creates a new PID file automatically.

FATAL: getgrnam failed to find groupid for effective group 'nogroup'

You are probably starting Squid as root. Squid is trying to find a group-id that doesn't have any special priveleges that it will run as. The default is nogroup, squid error fatal cannot open http port, but this may not be defined on your system.

The best fix for this is to assign squid a low-privilege user-id and assign that uerid to a group-id. There is a good chance that nobody will work for you as part of group nogroup.

Alternatively in older Squid the cache_effective_group in squid.conf my be changed to the name of an unpriveledged group from /etc/group. There is a good chance that nobody will work for you.

Squid uses 100% CPU

There may be many causes for this.

Andrew Doroshenko reports that removing /dev/null, or mounting a filesystem with the nodev option, can cause Squid to use 100% of CPU. His suggested solution is to "touch /dev/null."

Webmin's ''cachemgr.cgi'' crashes the operating system

Mikael Andersson reports that clicking on Webmin's cachemgr.cgi link creates numerous instances of cachemgr.cgi that quickly consume all available memory and brings the system to its knees.

Joe Cooper reports this to be squid error fatal cannot open http port by SSL problems in some outdated browsers (mainly Netscape 6.x/Mozilla) if your Webmin is SSL enabled. Try with a more current browser or disable SSL encryption in Webmin, squid error fatal cannot open http port.

Segment Violation at startup or upon first request

Some versions of GCC (notably 2.95.1 through 2.95.4 at least) have bugs with compiler optimization. These GCC bugs may cause NULL pointer accesses in Squid, resulting in a "FATAL: Received Segment Violation.dying" message and a core dump.

urlParse: Illegal character in hostname 'proxy.mydomain.com:8080proxy.mydomain.com'

By Yomler of fnac.net

A combination of a bad configuration of Internet Explorer and any application which use the cydoor DLLs will produce the entry in the log. See cydoor.com for a complete list.

The bad configuration of IE is the use of a active configuration script (proxy.pac) and an active or inactive, but filled proxy settings. IE will only use the proxy.pac. Cydoor aps will use both and will generate the errors.

Disabling the old proxy settings in IE is not enought, you should delete them completely and only use the proxy.pac for example.

Requests for international domain names do squid error fatal cannot open http port work

by HenrikNordström.

Some people have asked why requests for domain names using national symbols as "supported" by the certain domain registrars does not work in Squid. This is because there as of yet is no standard on how to manage national characters in the current Internet protocols such as HTTP or DNS. The current Internet standards is very strict on what is an acceptable hostname and only accepts A-Z a-z 0-9 and - in Internet hostname squid error fatal cannot open http port. Anything outside this is outside the current Internet standards and will cause interoperability issues such as the problems seen with such names and Squid.

When there is a consensus in the DNS and HTTP standardization groups on how to handle international domain names Squid will be changed to support this if any changes to Squid will be required.

If you are interested in the progress of the standardization process for international domain names please see the IETF IDN working group's dedicated page.

Why do I sometimes get "Zero Sized Reply"?

This happens when Squid makes a TCP connection to an origin server, but for some reason, the connection is closed before Squid reads any data. Depending on various factors, Squid may be able to retry the request again. If you see the "Zero Sized Reply" error message, it means that Squid was unable to retry, or that all retry attempts also failed.

What causes a connection to close prematurely? It could be a number of things, including:

  • An overloaded origin server.
  • TCP implementation/interoperability bugs. See the ./SystemWeirdnesses for details.

  • Race conditions with HTTP persistent connections.
  • Buggy or misconfigured NAT boxes, firewalls, and load-balancers.
  • Denial of service attacks.
  • Utilizing TCP blackholing on FreeBSD (check ./SystemWeirdnesses).

You may be able to use tcpdump to track down and observe the problem.

  • {i} Some users believe the problem is caused by very large cookies. One user reports that his Zero Sized Reply problem went away when he told Internet Explorer to not accept third-party cookies.

Here are some things you can try to reduce the occurance of the Zero Sized Reply error:

  • Delete or rename your cookie file and configure your browser to prompt you before accepting any new cookies.
  • Disable HTTP persistent connections with the server_persistent_connections and client_persistent_connections directives.

  • Disable any advanced TCP features on the Squid system. Disable ECN on Linux with echo 0 > /proc/sys/net/ipv4/tcp_ecn/.

  • (!) Upgrade to Squid-2.6 or later to work around a Host header related bug in Cisco PIX HTTP inspection. The Cisco PIX firewall wrongly assumes the Host header can be found in the first packet of the request.

If this error causes serious problems for you and the above does not help, Squid developers would be happy to help you uncover the problem. However, we will require high-quality debugging information from you, such as tcpdump output, server IP addresses, operating system versions, and access.log entries with full HTTP headers.

If you want to make Squid give the Zero Sized error on demand, you can use a short C program. Simply compile and start the program on a system that doesn't already have a server running on port 80. Then try to connect to this fake server through Squid.

Why do I get "The request or reply is too large" errors?

by Grzegorz Janoszka

This error message appears when you try downloading large file using GET or uploading it using POST/PUT. There are several parameters to look for:

These two are set to 0 by default, which means no limits at all. They should not be limited unless you really know how that affects your squid behavior. Or at all in standard proxy.

These two default to 64kB starting from Squid-3.1. Earlier versions of Squid had defaults as low as 2 kB. In some rather rare circumstances even 64kB is too low, so you can increase this value.

Negative or very large numbers in Store Directory Statistics, or constant complaints about cache above limit

In some situations where swap.state has been corrupted Squid can be very confused about how much data it has in the cache. Such corruption may happen after a power failure or similar fatal event. To recover first stop Squid, then delete the swap.state files from each cache directory and then start Squid again. Squid will automatically rebuild the swap.state index from the cached files reasonably well.

If this does not work or causes too high load on your server due to the reindexing of the cache then delete the cache content as explained in ./OperatingSquid.

Problems with Windows update

Back to the SquidFaq

SquidFaq/TroubleShooting (last edited 2015-09-03 20:12:49 by Eliezer Croitoru)