What Options For Passive Ducted Exhaust Cabinets
Sep 11, 2009
We're building-out a new room, and believe we could raise cold aisle temps about 5 degrees F if we use ducted cabinet exhaust. Heat density is limited by traditional cold air supply (e.g. 7kw per cabinet using AirGrate perf tiles), so I'm focusing on passive ducted exhaust.
We can purchase via any rep in the USA, FOB. So far, I'm aware of:
- CPI/Chatsworth TeraFrame
- Wrightline
- Wrightline HCS for APC NetShelter
- Damac
- custom?
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Jun 26, 2007
I've got a dedicated with Centos 4.x, WHM / Cpanel. I have problem when create new account, this is error:
Setting up Mail & Local Domains...localdomains...valiases ...vdomainaliases...vfilters......Done
Configuring DNS...Bind reconfiguring on server using rndc
Error reconfiguring bind on server: rndc: error: /etc/rndc.key:7: 'options' redefined near 'options'
rndc: could not load rndc configuration
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Jun 3, 2007
Any recommendations on brands/models of cabinets for use in a private cage space? I've been looking at the APCs, but was curious what others are using with really good air flow.
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Jan 3, 2007
Anyone have any recommmendations on getting two - three cabinets or open racks with 20-30 amps at 208 volt at Equinix 11 Great Oaks SJC asap?
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Jun 7, 2007
Our company (HQ Hoboken) is planning to move our current data center to a co-location somewhere in NJ or maybe NY (Manhattan). I'm kind of inexperinced on the US market since I've never been there. However, I'm travelling to Hoboken this Saturday and hope to schedule a tour and receive some quotes.
- We are looking for a private cage with space for 5 of our own cabinets, they will hold about 20 servers each. Not sure what the AMP will be, any minimum AMP to request for?
- At least 10 Mbps burstable.
- Redundant power etc.
Any thoughts about ReliableServers, CRNC or Net Access (NJ locals)?
I've been in touch with some companys working from CA but we want to be able to have a eastern contact. Basically they have said that i.e Level 3 is full and some others as well.
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Jan 19, 2008
what are the inbound and outbound ports when FTP Passive mode is used for PureFTPd.
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Mar 23, 2009
I'm running a Win2003 dedicated server with IIS and Plesk v9. While trying to configure my FTP ports I found out that my host has a basic (free) hardware firewall on my main/shared IP with ports 2000-2015 reserved for passive FTP connections. I asked them if they could change the ports to match the default ones but to customize hardware firewall settings I'm require to upgrade to a paid solution.
I again tried to approach the problem by trying to get IIS to conform to the host's ports. However after some research I found that the default MSFTP range is 1025-5000 while custom values have to be between 5001-65535. My host recommends I upgrade to a personal hardware firewall or make do with a software firewall. Other than dropping the firewall is there nothing I can do here?
I've thought of serving FTP on a dedicated IP (which would be exempted from the hardware firewall) but when I tried to set it up I got a directory permission error during connection attempts. I may be mistaken but this appears to be an an issue with Plesk not liking to serve a website's HTTP and FTP on separate IPs. Is solving this problem my best bet?
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Oct 4, 2009
vpsland.com what kind of passive support they have ? 48H without any progress ...
i bought VPS three months back and i am avoiding to disturb their sleeping APAIC but this is the first issue i have with their support , my vps turned offline with out any known reason no billing ,no abusing emails ..etc ...
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Jan 21, 2008
My roommate ran into this problem a few weeks ago. He could not connect to a webserver. Turns out it is the way that some of the ports are being handled when passive FTP is used.
I was wondering if a lot of web hosting companies are seeing some complaints of (passive) FTP not working properly? And who are you blaming?
He had to install some firmware updates to the Linksys router as well but then that started to crash the Internet connection (something we cannot have). So the router update was uninstalled.
He had to do quite a bit and finally started to use the control panel to upload. He has not tried FileZilla yet but I tried it on my system to connect to his server and it failed.
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Apr 21, 2009
Do you still have to add each port individually to Server 2008's Firewall like we did on Server 2003?
If so, will the guides that were put out for 2003 work on 2008's? I want to be sure before putting all these ports in....if I can just specify a range instead, it would be much easier!
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Oct 14, 2014
After some recents updates (currently running on: 12.0.18 Update #19) appeared a problem with connecting to FTP for passive mode users:
Connect ok!
"/" is the current directory
Get directory
227 Entering Passive Mode
550 Access is denied.
Server logs:
/var/log/messages
Oct 14 12:11:26 host xinetd[3692]: START: ftp pid=2709 from=::ffff:xxx.xxx.xxx.xxx
Oct 14 12:11:26 host proftpd[2709]: processing configuration directory '/etc/proftpd.d'
Oct 14 12:11:26 host proftpd[2709]: yyy.yyy.yyy.yyy (xxx.xxx.xxx.xxx[xxx.xxx.xxx.xxx]) - FTP session opened.
But:
/var/log/secure:
Oct 14 12:11:26 host proftpd: PAM unable to dlopen(/lib64/security/pam_stack.so): /lib64/security/pam_stack.so: cannot open shared object file: No such file or directory
Oct 14 12:11:26 host proftpd: PAM adding faulty module: /lib64/security/pam_stack.so
Oct 14 12:11:26 host proftpd: pam_listfile(proftpd:auth): Couldn't open /etc/ftpusers
Oct 14 12:11:26 host proftpd[2709]: yyy.yyy.yyy.yyy (xxx.xxx.xxx.xxx[xxx.xxx.xxx.xxx]) - USER client: Login successful.
ad1: yes, i do have passive ports configured in /etc/proftpd.conf and FW is properly configured
ad2: everything was fine until recent updates
ad3: this is happening only for passive users only
ad4: we are experiencing this issues across all Plesk instances [6x] on CentOS 6.5 with 12.0.18 Update #19
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Mar 1, 2015
I have some issues with the plesk firewall:
1. Emails are not delivered:
From some reasons, plesk is blocking incoming 25 port (in plesk shows opened, but it's not)My emails are delivered trough port 25, after doing some tests ( i've sent some emails to an email account hosted in the server) there was no email in the roundcube inbox! All emails were blocked...
a) Firewall was blocking the port 25 on server restart.
b) I have succesfully unblocked it from plesk manager -> tools -> edit/change -> even if i didn't change anything, i saved the "changes" and in my roundcube inbox i recived all the test emails.
c) In /var/log/maillog there is no error.
2. Passive FTP gets blocked in the same way, to successfully connect FireFTP on passive mode i need to repeat 1.b steps even if i've created a special rule to prevent the blocking, opening 49152-65534 ports and set PassivePorts 49152 65534 in /etc/proftpd.conf
The issue appears randomly, because in the last 5 days i didn´t restart the server, the last time i checked it worked. Today, without touching anything, firewall blocked my passive FTP and I had probmels reciving emails from gmail, yahoo etc...
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Aug 19, 2014
I am running Plesk 12 . Centos 6.5
I have Plesk Firewall Installed.
After the Plesk Firewall was enabled the FTP Stopped working in passive Mode.
I searched the net and found the following :
Code:
/etc/sysconfig/iptables-config and change the line with IPTABLES_MODULES to: IPTABLES_MODULES="ip_conntrack_ftp"
It started working.
I changed the default FTP port from proftpd.conf
Code:
port 2392
and /etc/services
Code:
ftp 2392/tcp
ftp 2392/udp fsp fspd
I allowed the new port in Plesk Firewall in Incoming connection and disabled port 21
Now I am not able to connect to the ftp, I get the following error. Have I missed anything ?
Code:
Response:257 "/" is the current directory
Command:TYPE I
Response:200 Type set to I
Command:PASV
Response:227 Entering Passive Mode (85,25,51,34,216,46).
Command:MLSD
Error:Connection timed out
Error:Failed to retrieve directory listing
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Jan 13, 2009
This is more aimed at providers but do you allow partial upgrades on RAM/Disk/Bandwidth?
I'm asking as we have one brand which is fully automated which I refuse to do partial upgrades on as its done as a budget and if a user needs more they need to upgrade to the next package but it is budget.
On our more expensive brands we do allow partial upgrades
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Feb 7, 2009
I have a Windows VPS hosting account. Plesk control panel. I use PHP for my website. With this setup how can I Rewrite my url's from
www.domain.com/page.html?x=param1&y=param2
to
www.domain.com/page/param1/param2
When I try to search I only find URL rewrite for Linux based vps using php or windows based vps using dotnet or php
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Jun 22, 2009
Am having a lot of this in my apache status in both, a dedicated server and a vps, i think is affecting our load,
example of just some of the ones that appear in the apache status (whm)
Code:
70-0 - 0/0/21 . 0.00 18726 0 0.0 0.00 0.17 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
71-0 - 0/0/33 . 0.00 18730 0 0.0 0.00 0.20 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
72-0 - 0/0/93 . 0.00 18731 0 0.0 0.00 0.83 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
73-0 - 0/0/17 . 0.00 18734 0 0.0 0.00 0.07 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
74-0 - 0/0/24 . 0.00 123794 0 0.0 0.00 0.13 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
75-0 - 0/0/30 . 0.08 123710 0 0.0 0.00 0.07 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
76-0 - 0/0/9 . 0.00 123783 0 0.0 0.00 0.03 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
77-0 - 0/0/10 . 0.01 123709 0 0.0 0.00 0.01 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
78-0 - 0/0/19 . 0.00 123748 232 0.0 0.00 0.17 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
79-0 - 0/0/129 . 0.00 123793 0 0.0 0.00 1.77 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
80-0 - 0/0/1 . 0.00 177694 0 0.0 0.00 0.00 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
81-0 - 0/0/1 . 0.00 177693 0 0.0 0.00 0.00 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
82-0 - 0/0/1 . 0.00 177692 0 0.0 0.00 0.00 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
83-0 - 0/0/3 . 0.07 177638 0 0.0 0.00 0.02 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
84-0 - 0/0/13 . 0.16 177609 0 0.0 0.00 0.03 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
85-0 - 0/0/1 . 0.00 177691 0 0.0 0.00 0.00 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
86-0 - 0/0/12 . 0.08 177616 0 0.0 0.00 0.01 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
87-0 - 0/0/3 . 0.00 177647 0 0.0 0.00 0.00 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
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Aug 21, 2008
I backup my accounts via cpanel backup. I run incremental and mount to a NAS. I have about 2GB in database and 3GB in files (500,000+ PNGs). Backup is hard on the server and it takes 17 hours to complete according to my logs.
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Nov 1, 2008
As a web hosts backups of client data are very important for me so I want some advices on the best methods of backups.
Should I use :
1. Raid
2. 2nd HDD and use cPanel's built in backup system.
3. Separate backup's server using cPanel's built in backup system.
4. r1soft or other commercial softwares?
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Jun 2, 2008
I host several web clients that were recently impacted by the crap at ThePlanet. As I think about how to be more redundant (and repetitive) I'm not sure of my options.
What's the best practice to ensure that if you have a server at a data center that goes out, that you can (somewhat) easily switch over to a different server? I suppose one solution is to have 2 servers at 2 physical locations, and then you could just change the DNS record in the event of failure, but is there another solution I'm not aware of? Is there a good resource I can goto to read up on this info?
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Sep 25, 2007
Still considering co-location and have been for many months! One thing I'm now thinking of is firewalls. What firewalls are available to me, what functionality do they have? What kind of additional protection can they give against DDoS attacks?
I really have no idea where to go with hardware firewalls. The bandwidth going through the firewall on average would be no more than 10mbit/s. Perhaps 20 with growth!
how you went about setting up your colo space with firewall protection
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Sep 22, 2009
I'm reseller vps, and now i decided to run own node, and sell vps, i choosed VDSMANAGER control panel, because virtuzzo is expensive.
Please help me to choose best options to run best and quality node,
VDSManager or VEportal ? (good optios&security&support&...)
XEN or OPENVZ ? (uutil now OPENVZ best for run static and dynamic site, but on xen can be run vpn & shoutcast & windows & linux & ...)
RAM GB ?
CPU ?
Hard ?
can i use load balancing for vps node ?
how many vps can be run on this node ?
Ex:
VDSmanager
XEN
Core2Quad Q9300
8 GB RAM
500 GB HDD
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Jan 17, 2007
I am selling custom software and web-design solutions. After my "unforgetable" experience with PayPal and 2CO i have found URL - they are new on the market and this is why they are more responsive than PayPal, whose priority is quantity, not quality. Most probably there are other option as well - simply this one is the most acceptable for me as it does not require complicated registration process/documents. I don't know how to get a normal merchant account if you live where I live.(I am from Ukraine). Please advice me some merchant accounts with their full discription.
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May 2, 2009
Currently I cache php to html in a folder, and any time I upload index.php the whole site recaches. It also is set to a specific time such as 1 day, and the specific page will recache on someone hitting a page in 1 day from last cache.
The problem is when there are thousands of people on, and the index.php is uploaded the site crashes due to connections to the database, and possibly writing to the folder as well.
What is the best way to cache these files to html, and not have it crash every time I try to update things on the site. Also it needs to be something somewhat simple.
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Mar 23, 2009
My host has told me that my forum is coming under a DDOS attack. Once was on Friday March 20th and again today (monday march 23). Before those two, there are attacks almost every week, sometimes twice a week.
The host installed DoS-Deflate. It started blocking legitimate traffic and had to be removed.
The operating system is Linux CentOS, the forum software is VBulletin. The server is a VPS with 1 gig of memory.
Besides DoS-Deflate, what other options are out there?
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Sep 30, 2008
Just curious if any of you know of good ways to handle the bandwidth costs associated with hosting high traffic video sites.
For a future project I plan a dedicated server, but was hoping there might be a cheap way to avoid bandwidth costs - such as Amazon S3 (however from my calculations this is an expensive option).
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Nov 11, 2008
I want to know what does kill -6 PID does?
Is there anything else like kill -1,-2 (expect 9).
Also, what is the diff between kill and kill -9?
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Mar 26, 2008
I'm currently working for a company who are looking to migrate there current business system and also create an e-commerce website.
The company (Company A) who were doing the migration were also going to originally take care of the e-commerce side of things aswell, but after looking at the website solution they have now decided to give it to another company (Company B) to deal with. But seem to be sticking with the original company to do the business system migration.
Now this has created a bit of a problem with regards to the hosting side of things (amongst other things ).
Originally this was all going to be hosted by Company A. This would keep it all nicely integrated.
But now Company B are doing the e-commerce side of things it needs to somehow integrate with the business database.
And now for the question (about time i hear you ask ).
Can you give me the pros and cons of the following scenarios:
Scenario A:
We host both business system (database) and webservers onsite.
Scenario B:
Company A hosts business (database) solution. We host webserver.
Scenario C:
Company A hosts business (database) system. Company B hosts webserver.
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Oct 11, 2008
I know of ovh (ick), leaseweb/rackedge and thats about it (maybee ecatel I emailed)
is there any others I should know about (not unmetered can't aford 4-5K euro lol)
looking for lower spec proc with 2 drives and 4-6TB on gigabit
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