Plesk 12.x / Linux :: Concurrent Visitors Max CPU Multiple Php-cgi
Jun 25, 2015
I am running Plesk 12.0.18 on Centos 6.4
I have noticed that the CPU on my VPS maxes out. This occurs when there are many concurrent visitors to any of the 7 domains. 6 of the domains run Wordpress and 1 runs php-bb forum. When I run top during high cpu I see multiple "php-cgi":
32664 xxxx 30 10 211m 38m 8228 S 21.0 0.9 0:03.70 php-cgi
32675 xxxx 30 10 209m 38m 7992 S 25.8 0.9 0:02.08 php-cgi
30809 apache 30 10 422m 98m 2492 S 8.8 2.2 0:18.07 httpd
Looking at the process
PID TTY STAT TIME COMMAND
32664 ? SN 0:01 /usr/bin/php-cgi -c /var/www/vhosts/system/websitex.com/etc/php.ini
The net result is CPU hits 100% and visitors are greeted with Service Unavailable ...
Output from /usr/local/psa/bin/php_handler --list
id: display name: full version: version: type: cgi-bin: php-cli: php.ini: custom:
cgi 5.3.3 5.3.3 5.3 cgi /usr/bin/php-cgi /etc/php.ini false
fastcgi 5.3.3 5.3.3 5.3 fastcgi /usr/bin/php-cgi /etc/php.ini false
module 5.3.3 5.3.3 5.3 module /usr/bin/php-cgi /etc/php.ini false
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Nov 11, 2014
I have two domains as virtual hosts on same IP address.
I am getting certificate error for the second domain when I try to check email (using MS Outlook). I can't permanently "accept" certificate, it complains again and again. Certuficate I created and self signed for imap.domain1.com, but the second email server is imap.domain2.com, so it complains.
How do I set separate email certificates for two domains? Is it possible at all?
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Jun 21, 2008
Server: Dell 2950
onboard NIC only
CentOS 4.6
Is it possible to run two concurrent VPN connections using the Linux Cisco VPN client? We need to have one server be able to communicate over two different vendors gateways.
Do we need to possibly add an additional NIC to the server first?
When we try to connect to another profile we get the error:
Initializing the VPN connection.
Secure VPN Connection terminated locally by the Client
Reason: A connection already exists.
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Mar 23, 2009
I am planning to get a Juniper firewall, but due to SSG140 has a maximum of 48,000 concurrent sessions per second, so it triggers me how do I measure the concurrent session of a linux server of the total throughput instead of just port 80?
OS: CentOS
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Jul 28, 2009
I am running lighttpd and eccelerator.
I have stripped the php-cgi.
I have tried forking anywhere from 50 to 300 to 1000 fastcgi children with PHP_FCGI_CHILDREN (through lighttpd, I'll attempt to do with same with spawn-fastcgi and fpm)
Server stats:
Intel Core i7 920
12GB DDR
250GB 7.2k RPM SATAII 16MB Cache
I am using to lighttpd's lighttpd-status to estimate concurrent connections.
When I refresh the panel, it shows that there are around 100-150 connections and around 150 requests/s in the last 5 seconds.
My vmstats show that CPU is 98% idle. Blocks written/read is neglible. MySql key_buffer set to 2gb and I'm pretty sure it's not mysql. The overwhelming majority of requests do not access mysql.
EDIT: Uh oh, I just realized that tcp_mem could be a huge bottle neck.
I just set it to:
net.ipv4.tcp_mem = 4096000 87380000 4194304000
It was previously:
net.ipv4.tcp_mem = somenumber somenumber 393,216 <<<--- WTF!
x1000 for my read values (it's an access server only). I can't benchmark the server right now so let me know if you have any suggestions besides this. I do think that this was the problem. When under load images could not be accessed either.
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Jun 22, 2015
I have a list of bad Ips and would like to add it into iptables, but I don't went to enter one-by-one or by command line, I would like to insert into list file of iptables editing a file or something like that, where and how I can procedure to do this?
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Aug 26, 2014
I tryed install multiple-php version in my Plesk 12 on CentOS 6.5 using Plesk KB but it doesn't work very well so I installed php-panda and it works fine but I want uninstall the php 5.4.31 version that fail but leaving the no-atomic old version. How can I do that? I know that is installed in other directory.
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Oct 18, 2014
I have plesk running on virtual machine on SSD drive but some web pages required large storage therefore I added second spinning hdd and mounted it into the file system.
How this could be used within plesk? I was trying symlink but that was not supported by FTP and apache.
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Oct 26, 2014
On a plesk11 server (migrated from plesk9) I see multiple locations for the logfiles:
/var/www/vhosts/<DOMAIN>/logs
/var/www/vhosts/system/<DOMAIN>/logs
They don't seem to be (hard)linked. Why store logfiles on 2 different locations? Is there a way to make this more efficient?
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Jul 21, 2014
Where I can find option for enable multiple log in for admin account?
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Dec 17, 2014
I installed Nginx and PHP-FPM through the Plesk Autoinstaller.It works well with the default PHP version installed originally with the CentOS 6 system (5.3.3). I also installed manually following your KB [URL] .... additional versions of PHP. It works well, and I can use those additional versions through the Plesk UI.
Therefore, I was wondering how to use them with PHP-FPM? As when I activate a domain for Nginx with PHP process (PHP-FPM), it switches the PHP version to 5.3.3 and I can't change this parameter.
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Dec 19, 2014
I've enabled one more php using this guide: [URL] .... but mysql is not working with the new php installation, how to get it working?
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Dec 28, 2014
I am looking for a replacement to my existing ISPConfig 3.x installation and have heard a lot of good things about Plesk, so I decided to put up a test server with a trial version of Plesk 12.The server is running Centos 6.5 64-bit minimal install with all system updates applied before installing Plesk. After installing Plesk I used the commands from the attached text-file.After compiling PHP 5.5.20 with no errors displayed on screen I created a new subscription plan as a copy of the #default domain" plan and changed the name to "PHP 5.5 website" and in the Hosting Parameters I changed PHP to run still run as a FastCGI application but use my compiled PHP 5.5.20 instead of the OS vendors PHP 5.3.3.The configure options used are the same as I did use for my ISPConfig 3.x servers.I also tried the configure options shown here: [URL]... But the command ends with a "configure: WARNING: unrecopgnized options: --enable-fastcgi"
If I compile with the attached script I get a HTTP 500 error when visiting the selected website (which is a clean installation of Drupal 7.34) and in the error_log for my test site I get this:
"
[Sun Dec 28 18:51:48 2014] [warn] [client x.x.x.x] (104)Connection reset by peer: mod_fcgid: error reading data from FastCGI server
[Sun Dec 28 18:51:48 2014] [error] [client x.x.x.x] Premature end of script headers: index.php
"
x.x.x.x is the internal IP of my router/firewall.I have also looked in the Plesk Administrator GuideIs there a known issue with Plesk 12 and CentOS 6.5 64-bit when wanting to use multiple versions of PHP, since both the version compiled using the KB article above and my own attached script worked fine on my ISPConfig 3.x servers.
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May 27, 2014
I have installed PHP5.5.12 as the secondary php version. The primary version (installed with plesk) is php5.4 .
Now when I try to install extensions, every time they are installing to the primary version.
How can I install extensions special for the other version?
I have Debian 7 x64 and parallels plesk 11.5
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Jun 3, 2015
Is Plesk capable of managing different servers from one interface?
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May 6, 2015
I have tried to install multiple versions of PHP as described here: [URL] The option "Add/Remove Components" > "Web hosting features" > "Different PHP interpreters versions" is not available in the Parallels Installer. I am using Plesk 12.0.18 on CentOS release 6.6 (Final)
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Jun 16, 2014
I am running a VPS through 123-REG, Plesk version 11.0.9 with CentOS 6.4
I host 3 websites of my own (with 14 mail accounts)
4 websites for clients (with 10 mail accounts)
7 websites for clients (with 0 mail accounts)
The problem I have had in the last 2 weeks is that the server has been compromised once again by spammers.
2 weeks ago we had another instance and the support was even worse than before, I decided that the best way forward after irradicating the problem and correcting the source, and in the interest of each of my clients I decided to asign each client with their own IP address in the vain hope that if one client account is compromised the others will not be affected, 123-REG agreed that this is a solid solution so I purchased 5 additional IP addresses for the clients I host mail accounts for, (all of the said addresses were blacklisted when I was given them!!!) the reverse DNS was not set up correctly, and couldn't be through their control panel and some didn't match the SMTP banners, then I found out through them that the mail was still sent out through the Primary IP address anyway so if one client gets blacklisted they all still do.
Now they tell me that I can in fact configure Plesk to use each IP address for each client exclusively and they sent me a link to a support article that doesn't actually tell me how to do it.
I can do the following so far:
Log into puTTY and use the command: nano /etc/postfix/master.cf
Find the "smtp" record referenced in the article [URL]
1.1.1.1- unix - n n - - smtp -o smtp_bind_address=1.1.1.1 -o smtp_bind_address6= -o smtp_address_preference=ipv4
2.2.2.2- unix - n n - - smtp -o smtp_bind_address=2.2.2.2 -o smtp_bind_address6= -o smtp_address_preference=ipv4
although mine looks like the one below:
1.1.1.1- unix - n n - - smtp -o smtp_bind_address=1.1.1.1 -o smtp_b$
Is there something missing from the entry I have?
Assuming that 1.1.1.1 = the relevant IP Address for the client do I need to create an entry for each of my IP addresses?
Do I need to do anything with SMTP banners? If so how do I do it, and what do I need to do?
The article also mentions the default settings being restored each time you reconfigure mail settings and to consider a scheduled task, does that mean each time I set up a new mail account or a new client as I assume that I will need to repeat these steps in that case anyway, mainly because they will have a unique IP address that needs to be set up.
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Apr 7, 2015
A really nice feature has been brought to plesk with the native support for multiple PHP versions now.I tried it out, but there seems to be an error in the session.save_path of PHP 5.5.23 (the one I tested).sessions.save_path points to /var/lib/php/sessions but the default before seems to be /var/lib/php/session so the folder does not exist.For now I simply worked with a symlink to solve the problem:
cd /var/lib/php/
ln -s session sessions
Not sure if other PHP version or other OSes (besides PHP 5.5.23 and CentOS 6.6 are affected).
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May 27, 2014
According to: URL....I tried to install php 5.3...Before able to .configure php source, i must install several dependencies. I resolved most of them but installing libmcrypt-devel gives the following error:
---> Package libmcrypt-devel.x86_64 0:2.5.7-5.el6.art will be installed
--> Processing Dependency: libmcrypt = 2.5.7-5.el6.art for package: libmcrypt-devel-2.5.7-5.el6.art.x86_64
--> Finished Dependency Resolution
Error: Package: libmcrypt-devel-2.5.7-5.el6.art.x86_64 (atomic)
Requires: libmcrypt = 2.5.7-5.el6.art
Installed: libmcrypt-2.5.8-9.el6.x86_64 (@PSA_10_4_4-thirdparty)
libmcrypt = 2.5.8-9.el6
Available: libmcrypt-2.5.7-5.el6.art.x86_64 (atomic)
libmcrypt = 2.5.7-5.el6.art
You could try using --skip-broken to work around the problem...You could try running: rpm -Va --nofiles --nodiges.
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Mar 31, 2015
Plesk 12 is used, latest #MU on CentOS 6.5 final.
Maillog is full of messages like:
Mar 31 14:56:52 hosting plesk sendmail[1177]: _mh_fork(): Error occured during waiting the child process with pid: 1178: No child processes
Mar 31 14:56:52 hosting plesk sendmail[1177]: Error during 'check-quota' handler
Mar 31 14:56:52 hosting plesk sendmail[1177]: Unable to get sender domain by sender mailname
[Code]....
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Nov 12, 2014
The VPS has 16 domains running on it, all with different web addresses and their own email accounts etc.
It's a Linux server and is running postfix for the mail. The main website on this domain has the mail service disabled because we have an exchange service on our own server here in the building where we work. Now when anyone on any of our domains on the VPS try to email us at 'maincompany.com' they get the following error message:
This is the mail system at host <vps address>.
Your message could not be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can delete your own text from the attached returned message.
The mail system
<stevew@maincompany.com>: mail for maincompany.com loops back to myself...
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Jun 10, 2015
I've run into a problem with my Plesk install with Amazon Route 53. I have the latest extension installed (version 1.2 release 2) on Parallels Plesk v12.0.18_build1200140811.16 os_CentOS 7.
The extension has been working perfectly well for me for months. I was adding new domains to Plesk and discovered that as I was making changes to DNS records that a new zone file was created on Route 53 instead of updating the original one.
I did notice that this started happening when I surpassed the 100 domain limit and seems to only happen on domains created at #101 and on. (in other words, I can edit a domain that was created before I got to domain #100 [ie domain #1] and it does not create a duplicate zone file).
I turned on debug mode for plesk and am seeing the json calls with the correct commands coming through.
Redacted sample of an update of Domain #104
[2015-06-10 16:42:43] INFO [panel] The domain alias <b>mydomain.test</b> was created.
[2015-06-10 16:42:43] DEBUG [util_exec] [5578bd6355bc3] Starting: dnsmng /usr/local/psa/admin/bin/dnsmng '--update' 'mydomain.test'
[2015-06-10 16:42:43] DEBUG [util_exec] [5578bd6355bc3] Finished in 0.06322s, Result: TRUE
[Code] .....
So from what I can see the domain +100 is re-creating the domain whereas domain 1 is not - it's just updating it, even though both json commands show the update statement coming through.
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Sep 13, 2014
We are looking for a solution to support multible IP's for different domains in one subscription/cusomer Account. Current, we have 4 IP's as shared. the Customer can choose under "Web Hosting Access" , which IP he wants to use.
This setting effect all domains in his Account. So it is not possible to set domain1.tld to e.g. IP 1.1.1.1 and domain2.tld e.g. to 2.2.2.2
We like to offer the cusomers one cusomer account with multible IP's
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Oct 24, 2014
We recently started migrating some cPanel accounts to Plesk. Besides the obvious that it doesn't create customer accounts it contains a pretty frustrating bug:
When an mail forward in cPanel has multiple addresses, only one the first mail forward address is migrated to Plesk.
so, E.g.
on cPanel: test@example.com is forwarded to john.doe@something.com, jane.doe@else.com, foo@bar.com
after migration to Plesk:
test@example.com is forwarded to john.doe@something.com only. The other addresses are not migrated.
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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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Jun 16, 2014
I'm getting multiple smtp mass mail attack, using weak passwords.
Is there a command, a part from
/usr/local/psa/admin/sbin/mail_auth_view
to list only unsecure password?
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Jun 6, 2014
I'm trying to add multiple PHP version (current version installed: 5.5.13), using the official documentation. I always get 500 Internal Server Error after switching to the new version, with the following error_log content:
Code:
[Sat Jun 07 00:49:35 2014] [warn] [client XXX.XXX.XXX.XXX] (104)Connection reset by peer: mod_fcgid: error reading data from FastCGI server
[Sat Jun 07 00:49:35 2014] [error] [client XXX.XXX.XXX.XXX] Premature end of script headers: index.php
Here you can view phpinfo() obtained running php54-cgi index.php from the command line. Same script doesn't work as FastCGI.
I'm trying to add PHP 5.4.29. Here is how I compiled it:
Code:
./configure
--prefix=/usr/local/php54
--with-bz2
--with-config-file-path=/usr/local/php54/etc
--with-config-file-scan-dir=/usr/local/php54/etc/php.d
--with-curl
[code]....
Switching back to PHP 5.5.13 and the script works fine (a simple phpinfo() output).How can I try to understand/debug what's wrong with the installation?
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Apr 14, 2015
Starting point: a working site using a shared IPv4, dedicated IPv6, and SSL. HTTP and HTTPS work, the latter only using SNI of course.
The good news: If I simply allocate an IP resource of 1 to a subscription it is pulled from the pool, assigned to the service node, assigned to the web site, DNS is updated, and the site is automatically changed to using a Dedicated IPv4 and Dedicated IPv6.
The bad news: visitors land on the default web site of the service node, with the default SSL certificate.
Other info: I can't ping the new IP, even though it shows in "ip a l" and /etc/sysconfig/network-scripts/ifcfg-eth0:0. [edited]
After the IP assignment, it is still installed, and /etc/httpd/conf/plesk.conf.d/ip_default/domainname.conf shows the new certificate is being used.
However, a second set of VirtualHost entries is created in server.conf for this IP for ports 80 and 443, with NameVirtualHost enabled on the new IP. The port 443 entry uses the default certificate. Apache's setup this default VirtualHost entry will override the web site configuration because Apache is listening on port 443 with the wrong cert.
If I go to "Change webspace settings" and toggle to Shared IPv4, Dedicated IPv6 the site works again via HTTPS, and Dedicated IPv4 and Dedicated IPv6 breaks it again. Setting the SSL cert to None and back again does not work.
Setting the SSL cert to None, changing to a dedicated IP, and enabling SSL results in the server being inexplicably inaccessible...browsers no longer connect to either the default site or the correct site, and I don't see any entries in the vhosts's logs.
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Apr 21, 2009
i have a vps, and im current use lighttpd, but i want move to litespeed Standard. And i see they limit Max Concurrent Connections =150 on standard version.
but what is Max Concurrent Connections? where can i find it.
and is it the number connection via port 80 (netstat -nt | grep :80 | wc -l)?
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