Apache :: Randomly Receive 502 Bad Gateway Error (2.4.4)
Jul 23, 2013
I am currently running apache 2.4.4 with Tomcat and randomly i receive the following error when i try to hit the external URL:
Bad Gateway
The proxy server received an invalid response from an upstream server
====================================================
Inside apachie error.log file., i also see the following error, i am not sure if they are related:
"The specified network name is no longer available. : AH00341: winnt_accept: Asynchronous AcceptEx failed."
=====================================================
Here is my httpd.conf file: .....
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Oct 22, 2014
When I turn on nginx for the server I am able to browse non SSL protected sites correctly. I receive a 502 Bad Gateway error on any sites that have an SSL certificate. Is there a fix for this? I have been unable to find one.
I am running Plesk 12 on an Ubuntu server.
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Jan 4, 2007
i am using curl in php and it showing time out error randomly!
Code:
Operation timed out with 0 out of -1 bytes received
maybe you say its remote server problem but i am geting this error from google server ,
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Apr 17, 2009
I have the same error mentioned in this old tread:
[url]
Once in a while the user have "Internal server error"
when accessing any php page.
The php is php v4 compile as fastcgi on Centos 5.
The warning/error sequins is always like this:
[Fri Apr 17 09:09:49 2009] [warn] FastCGI: (dynamic) server "/home/fastcgi-scripts/abc.fcgi" (pid 22726) termination signaled
[Fri Apr 17 09:09:49 2009] [warn] FastCGI: (dynamic) server "/home/fastcgi-scripts/abc.fcgi" (pid 22726) terminated by calling exit with status '0'
[Fri Apr 17 09:09:49 2009] [error] [client 127.0.0.1] FastCGI: incomplete headers (0 bytes) received from server "/home/fastcgi-scripts/abc.fcgi", referer:
[url]
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May 18, 2008
Some visitor of our hosted sited have "Getway Error"
Im attach this error,
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May 12, 2015
it's starting to kill child processes and eventually stops/hangs.
#plesk version
Product version: 12.0.18 Update #45
Update date: 2015/05/08 03:13
Build date: 2015/01/26 15:00
Build target: CentOS 7
Revision: 334346
Architecture: 64-bit
Wrapper version: 1.2
#free -m
total used free shared buff/cache available
Mem: 3782 647 2281 45 854 2875
Swap: 2047 0 2047
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Feb 21, 2012
I use apache 2.4.1 and mod_fcgid (same config form apache 2.2.22+mod_fcgid 2.3.6) and without any error message, apache stop responding randomly.There is no problem with apache 2.2.22+mod_fcgid 2.3.6 and with apache 2.4.1 + php5_module i have
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Feb 13, 2013
Randomly my server goes offline. There is no pattern to this. It can be fine for weeks then have 5 issues in one day. I have to restart Apache and it all come back on.
I'm not sure where to start to look for errors as I'm not that experienced.
Server Info
Windows Server 2008 R2 Standard Edition
PHP Version5.4.9
Apache VersionApache/2.4.1 (Win32)
MySQL version 5.0.10
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Mar 12, 2015
my local host is just taking incredibly long to load. At work I've set it up no differently and it works like a charm, but at home, it works.. But at times it doesnt load instantly until I restart my browser. I have to press refresh or enter to login a million times for it to load after the first few seconds I use it.
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Sep 22, 2013
I am trying to fix website [URL] .... I open the site like 20 times a day and like 2 times a day it shows blank page. Which logs I need to check or which tools to use? I have cpanel hosting, apache.
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Jan 14, 2015
I have a server with the latest version of plesk and centos.
The main site is Articoli Promozionali
Until now kept on the server active both apache and nginx.
Tonight I tried to disable apache leaving only nginx.
That raises the error: 502 bad gateway NGINX at all sites on that server.
To use nginx i need to keep active apache?
What can cause that error?
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Jun 27, 2014
I have upgraded from 11.5 to 12, and now if I try to open Plesk on the port 8443 I have this error:
502 Bad Gateway
nginx
This is the log:
2014/06/27 18:25:13 [crit] 1629#0: *2 connect() to unix:/var/run/sw-engine.sock failed (2: No such file or directory) while connecting to upstream, client: 79.49.206.176, server: , request: "GET / HTTP/1.1", upstream: "fastcgi://unix:/var/run/sw-engine.sock:", host: "87.106.85.233:8443"
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Dec 10, 2013
I have a problem with "502 Bad Gateway" errore when I'm trying to create a new subscription.
Here my logfile:
/var/log/sw-cp-server/error_log:
2013/12/10 12:47:03 [error] 11827#0: *100 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: XX.XXX.XX.XXX, server: , request: "POST /admin/subscription/create HTTP/1.1", upstream: "fastcgi://unix:/var/run/sw-engine.sock:", host: "xxxxxxxxxxxxx.xx:8443", referrer: "https://xxxxxxxxxxxxx.xx:8443/admin/subscription/create"Click to expand...
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Jul 26, 2014
We are running Plesk 12 (latest version) on openSuse 13.1. The web server is nginx as a proxy in front of Apache. We are running into a 502 Bad Gateway nginx error when trying to send data from a simple form to a php script.
The log shows: upstream prematurely closed connection while reading response header from upstream
It seems that Plesk does not configure nginx properly as some pages, especially pages that are accessed via https have broken headers. The headers of a page that is displaying
HTTP/1.1 400 Bad Request =>
Server => nginx
Date => Sat, 26 Jul 2014 09:53:13 GMT
Content-Type => text/html
Content-Length => 166
Connection => close
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Jul 10, 2009
I just installed WAMPP on Windows Vista 32 machine. I am using Firefox. When I try the localhost, I receive a 404 error. I have no idea what else to check the UAC is off, port 80 is free, I am running Avast as my anti-virus. I am a complete newbie to PHP, Apache, & MySql. I am trying to learn so I can run some PHP scripts for my website.
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May 26, 2015
under Plesk 12.0.18 PHPMyAdmin is failing to import a 3 MB SQL dump of a simple Joomla website. "Error 505 Bad Gateway", it says.It happens with other dumps too, some as small as ~500 KB. The format (SQL or ZIP) of the file uploaded doesn't seem to matter, because the upload itself seems to work; it seems it's the post-processing what is raising the error.
The funny thing is that the import itself seems to work (the contents of the SQL dump are imported), but the error message appears and causes confusion and support requests from our clients./var/log/sw-cp-server/error_log says:
2015/05/15 03:19:31 [error] 10215#0: *5 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: XX.XX. XXX. XXX, server: , request: "POST /domains/databases/phpMyAdmin/import.php HTTP/1.1", upstream: "fastcgi://unix:/var/run/sw-engine.sock:", host: "xxxx. xxxxxxx.com:8443", referrer: URL.....To me it sounds like a timeout.
This seems to be a "popular" error among Plesk users, and I have tried this, this and this with no luck.
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Jun 22, 2015
As I read, when Plesk and WHMCS are in the same server, you may have 502 bad gateway errors when creating an account through WHMCS..Page not Found/Timeout/502 Bad Gateway error creating accounts with Plesk 10+..By default Plesk 10 and above performs a forced restart of apache when an account is created or suspended which causes WHMCS to lose connection to the server, and if your WHMCS is on the same server, you will also lose connection to WHMCS at the same time.
In order to resolve this please refer to the following knowledgebase article for instructions on configuring Plesk to perform a graceful restart instead: URL..
But when I activate nginx in Plesk the 502 bad Gateway problem comes back.Is there an option to activate Nginx graceful restart in Plesk?
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Feb 18, 2015
Our server : [URL] .....
plesk v11 (64BITS)
PROBLEM DESCRIPTION
We found 502 Bad Gateway error Nginx on multiple domain "currently troissoeursetunfrere.com is a wordpress site e-commerce" and also malittleboutique.com ecommerce wordpress, possibly to fix this problem we have followed this tutorial " [URL] ....
we perform the following operations:
sudo apt-get remove php5 php5-cgi php5-fpm
sudo apt-get install php5 php5-cgi php5-fpm
Following these operations we lost access to cpanel.
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Feb 24, 2007
I set up my domain [url]& uploaded my Wordpress theme on my host, but receive an error, as follows:
"Fatal error: Call to undefined function: get_header() in /home/michelz/public_html/lendadvisors/index.php on line 1"
Also I set up a free Wordpress account for this purpose. So far I don't have any experience with hosting Wordpress on my host! How can I get things work?
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Mar 16, 2015
A few day ago when i access Windows plesk i receive error Access Denied. [URL]..... Even i made these steps i still receiving Access Denied when i access. I tried use PLesk REconfigurator, put psaadm permissons on all C:, update plesk, windows and still having this issue.
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Jul 17, 2014
I am looking for setup a gateway (reverse proxy I guess?), specifically how to configure Apache to point to different webservers depending on domain name.
I currently have a single webserver running multiple virtual domains all accessible via a single external IP address.
I would like to break this into 2 servers each running multiple virtual domains accessible via gateway with a singe external IP address.
As an example, a single internet IP address points to port 80 on the gateway machine. The gateway machine will determine if its example1.com, example2.com, example3.com or example4.com. If its example1.com or example2.com it will direct internally to webserver1 and if its example3.com or example4.com it will direct internally to webserver2.
Webserver1 and webserver2 each host different websites via virtual hosts.
Is this possible and if so, what is the correct configuration of the gateway machine. I currently have installed apache2 with mod_proxy enabled, but I am struggling with configuring it properly.
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Oct 10, 2012
- Apache version : 2.2.21
- operating system : MAC OS Lion Server
- mod_ssl : 2.2.21
I have a certain area on a homepage which is protected by an .htaccess file. The code of the .htaccess file is the following:
Code:
AuthType Digest
AuthName "Password Required"
Options +Indexes
# code for HTTPS
RewriteEngine On
RewriteCond
%{SERVER_PORT} !^443$
RewriteRule (.*) https://%{SERVER_NAME}%{REQUEST_URI}
Require valid-user
Usually everything has been working fine with this .htaccess-file until today. There hasn't been any change on the system.
If you click on the hyperlink to the restricted area the login window appears where you need to type in your username and a password. After typing in these data the following message appears in the browser:
500 Internal Server Error
The server encountered an internal error or
misconfigruation and was unable to complete your request. (…)
The apache error log file contains the following message:
Request exceeded the limit of 10 sub request nesting levels due to probable configuration error.
Use 'LimitInternalRecursion' to increase the limit if necessary.
Use 'LogLevel debug' to get a backtrace.
The increase of the LimitInternalRecursion does not solve the problem. So I switched the LogLevel in the httpd.conf file from warn to debug and looked again on the entries of the error log.
The following appeared (I have replaced ip addresses, usernames and URL by xyz or <URL>) :
Code:
[error] [client xyz]
mod_digest_apple: Client is using a nonce not issued by this server for this context:/rb/Vorlesung/WS12/Downloads/, referer:
http:<URL>
[Code] ....
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May 29, 2008
The problem is that it switches from running to mounted without me having anything to do with it. It seems to be quite randomly, for example this morning at 1.42 am. This happens once a day and stops my vps and therefore my website - which is quite annoying.
I checked for log files or anything, but there was nothing mentioning resources or anything.
Does anyone have a clue what this might be? If I cannot fix the problem there is still the opportunity to just start the vps once it goes to status mounted. How would I automate this?
I am using Virtuozzo and Plesk.
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Dec 3, 2008
I just built a new pc, everything works well, but sometimes my computer will just restart randomly, it doesnt happen immedietly but randomly, within 30 or more minutes operating. Any ideas to why? and how i can fix it? ...
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May 28, 2007
I am creating a web application, nothing spectacular just something to display content.
After completing a long night of coding, I uploaded my files to my server and checked to make sure everything was functioning correctly. Everything seemed fine so I went to bed.
The next morning, to my surprise, all my images had dissapeared! Well not all of them, just the ones being displayed through the PHP script. (coincidentally, these images where all in the same directory...)
Of course the first thought that went through my mind was "scripting error". Which surprised me, since everything worked perfectly the night before. I checked and double checked everything, and I couldn't find anything wrong. I checked the permissions on the directory holding the images and they appeared correct (755). So, to locate the problem I decided to strip out all the variables and create a test page that had only the SQL query, and a print to output the <img> code. Still nothing! So I decided to just go the HTML route and create a test file that held only the <img> code, no PHP involved... nothing.
The images are on the server. I double checked... if you right click > view image, it shows up. Then if you go back to the "test" page and refresh the image is there... however, it does not appear when you first load the page, or it appears and then immediately dissapears.
I contacted my host about the issue, and their first response said:
Quote:
Dear customer,
The images are there if you login through plesk control panel and go to
File Manager under your domain you can find the pictures and see
them.But some of them are not opening under your website.
Best Regards
Honestly... are you kidding me? Reiterating my question doesn't constitute as an answer. And they call themselves "engineers"...
Seeing as it appears to only be affecting one directory (and possibly only JPG images...? Have a look at the test pages above), I believe it might be a permissions issue.
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May 19, 2007
server hanging randomly
this is logs that i found
what is wrong with my server?
Quote:
May 19 15:35:02 hostname kernel: eip: c02d331b
May 19 15:35:02 hostname kernel: ------------[ cut here ]------------
May 19 15:35:02 hostname kernel: kernel BUG at include/asm/spinlock.h:133!
May 19 15:35:02 hostname kernel: invalid operand: 0000 [#1]
May 19 15:35:02 hostname kernel: SMP
May 19 15:35:02 hostname kernel: Modules linked in: md5 ipv6 parport_pc lp
parport ipt_state ipt_TOS iptable_mangle ip_conntrack_ftp ip_conntrack_irc ip_c
onntrack ipt_REJECT ipt_LOG ipt_limit iptable_filter ipt_multiport ip_tables aut
ofs4 i2c_dev i2c_core sunrpc dm_mirror dm_mod button battery ac uhci_hcd ehci_hc
d snd_intel8x0 snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd_pa
ge_alloc snd_mpu401_uart snd_rawmidi snd_seq_device snd soundcore 8139too mii sk
98lin ext3 jbd
May 19 15:35:02 hostname kernel: CPU: 1
May 19 15:35:02 hostname kernel: EIP: 0060:[<c02d357c>] Not tainted
VLI
May 19 15:35:02 hostname kernel: EFLAGS: 00010016 (2.6.9-42.0.10.ELsmp)
May 19 15:35:02 hostname kernel: EIP is at _spin_lock_irq+0x1d/0x35
May 19 15:35:02 hostname kernel: eax: c02e71c3 ebx: f5e6a934 ecx: c756be28 edx: c02d331b
May 19 15:35:02 hostname kernel: esi: f5e6a930 edi: 00000000 ebp: c756b000 esp: c756be2c
May 19 15:35:02 hostname kernel: ds: 007b es: 007b ss: 0068
May 19 15:35:02 hostname kernel: Process netstat (pid: 336, threadinfo=c756b000 task=cb03b330)
May 19 15:35:02 hostname kernel: Stack: ffffffff c02d331b cb03b330 f6481e98 f6481e98 00000246 00000002 f5e6a930
May 19 15:35:02 hostname kernel: f5e6a900 00000000 c756b000 c01652bf 00000000 00000000 00000000 c032e610
May 19 15:35:02 hostname kernel: c756bfc4 0000000b 0000000b c011d2e4 c014e529 ffffffff ffffffff c2015de0
May 19 15:35:02 hostname kernel: Call Trace:
May 19 15:35:02 hostname kernel: [<c02d331b>] rwsem_down_write_failed+0x32/0x160
May 19 15:35:02 hostname kernel: [<c01652bf>] .text.lock.exec+0xba/0xd7
May 19 15:35:02 hostname kernel: [<c011d2e4>] try_to_wake_up+0x28e/0x299
May 19 15:35:02 hostname kernel: [<c014e529>] do_no_page+0x2da/0x2f9
May 19 15:35:02 hostname kernel: [<c012b458>] __dequeue_signal+0x14c/0x155
May 19 15:35:02 hostname kernel: [<c012b476>] dequeue_signal+0x15/0x54
May 19 15:35:02 hostname kernel: [<c012cd3f>] get_signal_to_deliver+0x317/0x346
May 19 15:35:02 hostname kernel: [<c0105bd4>] do_signal+0x55/0xd9
May 19 15:35:02 hostname kernel: [<c01c3616>] __copy_to_user_ll+0x30/0x46
May 19 15:35:02 hostname kernel: [<c017553b>] seq_read+0x24a/0x2c2
May 19 15:35:02 hostname kernel: [<c0172c49>] dnotify_parent+0x1b/0x6e
May 19 15:35:02 hostname kernel: [<c015ae7d>] vfs_read+0xda/0xe2
May 19 15:35:02 hostname kernel: [<c015b06c>] sys_read+0x3c/0x62
May 19 15:35:02 hostname kernel: [<c011ae55>] do_page_fault+0x0/0x5c6
May 19 15:35:02 hostname kernel: [<c0105c80>] do_notify_resume+0x28/0x38
May 19 15:35:02 hostname kernel: [<c02d4966>] work_notifysig+0x13/0x15
May 19 15:35:02 hostname kernel: Code: 90 80 3e 00 7e f9 fa eb e8 89 d8 5b 5e c3 53 89 c3 fa 81 78 04 ad 4e ad de 74 18
ff 74 24 04 68 c3 71 2e c0 e8 24 f3 e4 ff 58 5a <0f> 0b 85 00 2e 62 2e c0 f0 fe 0b 79 09 f3 90 80 3b 00 7e f9 eb
May 19 15:35:02 hostname kernel: <0>Fatal exception: panic in 5 seconds
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Jan 15, 2007
Everything was running ok until last week.
I haven't really done anything new other then added another forum on the server (Invision).
Basically the problem is the random spikes I get. The main forum that is running on the server haven't really increased in terms of sim connections. Its usually around 180 - 220 during peak times.
On TOP there is usually around 250 tasks. When this thing started happening it would spikes to 500+ tasks which totally kills the server. Its pretty random also. Sometimes it'll go fine for a few hours and then suddenly climbed slowly up and then the server dies. For now its going to crash whenever I let apache run for an hour or so.
The only way I can restore is to restart apache. It has come to the point where I've had to put in restart apache in the cronjob list. Restart it every few minutes since I'm not always here watching over it. This is obviously a shortterm solution to keep the forum up while I troubleshoot this.
Here's a screenshot when it was just about dead
http://img392.imageshack.us/my.php?image=serverwf0.jpg
I checked out the logs and didn't see anything.
I was either told it needed more ram or that it was hacked.
The JRE is the flashchat I'm running and the trans_linux is a bot for the shoutcast.
Since I haven't been doing anything new.. I don't think its the resources of the server thats too little.
The server i have is
Dual Opteron 252
2 gigs of ram
1 146GB 15,000RPM scsi drive
how I can resolve it? Is Apache using more memory then its suppose to?
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Jul 24, 2008
Today we received an email saying that the admin password for the server had been changed by them and that we should log in and change the password again ourselves.
49pence have provided no explanation as to why the password was changed and despite multiple requests have refused to give any kind of explanation. I've also asked to speak to a manager and this request was denied (well, more ignored and I was given the same line that they cannot disclose why they changed a customers' password).
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