Auto Time Change Centos On VPS VMWare
Sep 29, 2008
I'm using a CentOS 5 VPS server inside a VMWare Infrastructure environment. I don't know if that is relevant, but I have the following:
Every night my server with CentOS 5 changes its time back to +1 UTC. Strangely it happens every 0:00.
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Nov 13, 2007
We`ve a cPanel webserver, we are going to migrate accounts to another server, So require to decrease TTL of all accounts there, But that is hard to change them one by one.
Do you know how should I decrease all of those TTL`s at the same time with an special command?
Another thing is that, If we dont increase TTL`s after transfer and leave those to be about 300sec, Will that make any issues for us?
And what should a TTL be a large number (standard 86400)?
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Jul 26, 2007
i have a centos cpanel 11 dedicated server, but the time at server is wrong and i can't sync it.
i try using rdate and it gave me error :
Code:
rdate: rdate: could not set system time: Operation not permitted
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Mar 17, 2008
I have a problem with time at one RHEL 4 server, it is a plain box, and from time to time the time (hours) seems to be auto modified, no one is touching the box and then from once it got modified to a few hours less than what we specified, to change time and date we always use:
Code:
date --set "2007-10-24 13:35"
hwclock --set --date="2007-10-24 13:35"
The only thing that I noted is that ntpd daemon was running, while in the rest of our plain box it is not running, maybe this is the reason the system is auto chaning the time?
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Jun 7, 2009
I just got about 10 centos vps servers. are there any programs that will do most of the hardening or security for me?
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Jan 20, 2008
I use automatic partition in centos 5... I have two hard drive, and it looks like it auto raid everything into volgroup0? is this true?
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Sep 8, 2007
OKay here is the set up:
I have a CENTOS 64bit running, with 1 guest OS (WinXP) in a VMWare Server. I have tried the following: I have 6 public IP's attached to my 1 Ethernet card in the CENTOS host.
Try 1:
The Guest OS is set to use "Bridged" Networking. This allows full use of the internet, in both directions. Not exactly optimal, but it does work. I can reach the Guest via RD, which is a requirement for this client. The guest OS is mainly assigned one of the 6 public IP's (x.x.x.118). The problem with this setup is the Guest OS can not reach the host. For example the host has a mail server on it, and when the Guest tries to reach the host, it times out.
Try 2:
The Guest OS is set up to use "NAT" and gets 192.168.100.128 as its IP via DHCP inside of VMWare. The nat config file for VMWare is set to open port 3389 (RD port). Guest OS can reach the host with out any problem, and can reach the internet with out any problem, however I can not RD in to the Guest OS.
I prefer setup number 2 for all the obvious reasons, but I just can not get my IPTables rules to work. This is what I thought should work, but does not:
iptables -t nat -I PREROUTING -d x.x.x.118 -j DNAT --to-destination=192.168.100.128
iptables -t nat -I POSTROUTING -s 192.168.100.128 -j SNAT --to-source=x.x.x.118
I realize that would have done all traffic, and defeated the benefits of NAT,but since forwarding only 3389 was not working I tried forwarding everything.
Any suggestions?
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Apr 28, 2009
I'm trying to boot up a centos install on vmware it keeps stalling when trying to run sendmail in the bootup. All I have access to is the grub command line. Is it possible to remove sendmail from startup using grub?
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Sep 3, 2014
couldn't find any installation guide by Paralles how to install Plesk12 step by step. Found some on the internet, got the webinstaller started, but it says I should visit "192.168.0.100:8447" in my browser, which is just the internal IP of the server. Now I don't know what to do now, it's a fresh installed CentOS 6.5
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Dec 22, 2008
with the ssh command to change my server time from Virginia, USA to the Pacific Northwest where I live.
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Mar 1, 2008
I enter my username, get prompted immediately for a password, enter it, and immediately get a shell. Other times, it takes a second or two after entering my username before prompting me for a password. Other times, it'll prompt me for the password quickly, but sit for a couple seconds before giving me a shell.
Here's the odd thing, though--the machine has a 0.00 load average, is 20ms away, and I'm seeing 0% packet loss.
It's not the end of the world, of course, if I have to wait a second. But I'm curious what's going on, because, on a dual-core 3GHz machine with 2GB RAM, with NOTHING running on it, it should really be a lot faster...
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Apr 22, 2007
I have a root access and using DirectAdmin control panel! How to change my server Time zone to GMT + 4?
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May 21, 2008
I don't use anything like active directory to manage my windows servers. I just manage them individually.
I need to make a change to terminal services configuration on all of them. I don't want to login to each one and manually edit it.
How the hell can I do this in Windows?
In Linux i could knock up a script in about 5 minutes with expect that would login to every single one and make the change i wanted.
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Jul 14, 2007
How change language in CentOS?
Code:
[root@serwer /]# locale
LANG=
LC_CTYPE="POSIX"
LC_NUMERIC="POSIX"
LC_TIME="POSIX"
LC_COLLATE="POSIX"
LC_MONETARY="POSIX"
LC_MESSAGES="POSIX"
LC_PAPER="POSIX"
LC_NAME="POSIX"
LC_ADDRESS="POSIX"
LC_TELEPHONE="POSIX"
LC_MEASUREMENT="POSIX"
LC_IDENTIFICATION="POSIX"
LC_ALL=
I don't have on my server file: /etc/sysconfig/i18n
Can one use command: locale LANG="pl_PL" ? - not working
Should you restart the system after the change of the language?
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Nov 11, 2008
I have centos VPS server, it's possible to change primary vps?
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Apr 29, 2008
How can change server primary address in centos?
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Apr 15, 2008
My hosting service doesn't provide Fedora servers anymore, and they offer only CentOS servers.
I'm now a real Fedora expert , and I don't know if I must change to CentOS in the new servers I acquire.
- Does it take too much time to learn CentOS?
- Is CentOS very similar to Fedora?
- Is CentOS more stable than Fedora?
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Mar 30, 2009
I have an address that receives hundreds and hundreds of e-mails a day. It's an address people aren't supposed to use (basically noreply@mydomain.com), but people do. I'd like to stop being the guy that gets these and routes them as appropriate, but we can't just turn it off and cause a hard bounce, because that will bewilder too many people who don't get that replying to noreply@mydomain.com is a bad idea. (Our website sends out notifications to people. A lot of people reply for various strange reasons, and we also get a lot of autoresponders sending us junk.)
I'm a Linux admin, so I'm a bit out of my league -- this needs to be configured on our Exchange box.
What I'd really like is an auto-responder for this address that will tell people that they e-mailed a mailbox that no one uses, and give them directions on how to contact a real person if need be.
However, fully half of the e-mails we receive are people's auto-responders. Is an Exchange auto-responder going to reply to their auto-responder? This will completely bewilder people.
And if this will auto-respond to auto-responders, is there a cleaner solution here? Again, it's got to be Exchange, but I'm a Postfix guy, so I have very little experience here.
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Nov 11, 2008
This is a rare issue i have on a RHEL 5.2 + cPanel server.
Server time is:
Tue Nov 11 17:02:51 CST 2008
Squirrelmail time show:
Code:
Last Refresh:
Tue, 5:02 pm
So, that is correct too..
But email arrives with -4 hours time, example:
webmaster@xxx.com 1:03 pm testing email
I already rebooted httpd, exim, and imap server, and the server itself too.. and problem stills.
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Jan 6, 2008
I got report from webceo that I have some issues. May someone help me fix this?
DNS Lookup: 0.22 sec
Connect time: 0.33 sec
Host ping: 0.10 sec
That mean too slow with the other sites!
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Sep 25, 2008
I can't get access to a certain site. I always get the page with:
network time out - server at *** takes to long to respons. More people have noticed this and apparently it only happens to people with certain specific providers. And not all the time. Some times they DO get access eventy to they belong to the same ISP. So I guess an ISP isn't blocking access to it otherwise it would be permenantly/The site administrator insists that certain ISP's are blocking his site. He's hosting it on his own server. The domain belongs is registered at namecheap.com.
If an ISP is blocking this site (if that's possible?), that would lead to that 'network timeout' page wouldn't it?
What is the most likely reason for getting a timeout page anyway?
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Aug 9, 2007
I have a dedicated server specs: AMD 3500+ 64 Bit CPU, 1 GB Ram, 160 GB Sata Drive. For 1 month, CPU load average reaches 40-50 value. This happens about 5-6 times in a day. When I stop httpd service for 30 seconds everything goes normal. I think this is not a DoS attack because it comes systematic, I dont believe no one makes this regularly except bots.
Maybe its a system service or a cronjob but it stops when I turn off httpd service?
How can I be sure about what's making this regularly load?
I also did set up a script which mail me when load average of system goes crazy and restart httpd service. But instant restart is not working to stop load increase.
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Feb 6, 2013
The server is going down from time to time, every 12 days or so the site hosted there is no longer accesible, everything starts with the site slowing don and down and then is not longer reachable, what we do is to request a power cycle, and with this we start all over again till next power cycle, so on so on, of course, here are my server details and more info on this:
- MySQL - 5.1.41-3ubuntu12.10
- Apache - 2.2.14-5ubuntu8.4
- PHP - 5.3.2-1ubuntu4.9
- operating system: Ubuntu Server 10.04 LTS
After some time emailing the support guys to barely check about what's going on, we received an email with a few things:
1.- found a few errors that likely would cause issues with Apache. The first error is:
[Mon Feb 04 05:03:10 2013] [error] mod_fcgid: fcgid process manager died, restarting the server and the next error is:
[Mon Feb 04 14:32:34 2013] [error] server reached MaxClients setting, consider raising the MaxClients setting ...
Both these errors seem to indicate that you have a process that is running out of control on your server. We were unable to determine what script on your site is running caused your connections to be maxed out however it does appear that before these errors were generated there was a WordPress plugin referenced in your access logs...
2.- Additionally during our review we did find that your error log for mercadodedinerousa.com is 45 GB's which is excessively large and can cause problems when Apache is trying to write a such a large file.
3.- The majority of the errors being logged are:
[Wed Feb 06 12:12:31 2013] [error] [client 200.76.90.5] Options FollowSymLinks or SymLinksIfOwnerMatch is off which implies that RewriteRule directive is forbidden: /var/www/vhosts/mercadodedinerousa.com/httpdocs/index.pl, referer: [URL]
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Feb 21, 2015
I have a client on a dedicated IP, today we needed to downgrade the web hosting plan. As the web hosting plan puts users on a default shared IP, this plan change also changed the dedicated IP to the shared one causing some propagation issues for a small period of time.
I have contacted WHMCS about this asking if they had a way of changing the clients plan but keeping the IP address intact as this could lead to some very undesirable outcomes. They explained that it is not their fault and to contact Parallels.
I know I can change the plan directly in Plesk however by initiating the plan change via WHMCS, everything is automated.
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Feb 5, 2008
Has anyone helped clients transition from one domain to another? Maybe dissolving a partnership or renaming their company... so a new domain name has been registered and a new website created.
2 Issues:
#1 Using .htaccess 301 redirect
We used the following command line in their old website's htaccess file
Redirect 301 / [url]
The goal was to get people try to visit any page of their old website (i.e. OldWebsite.com/contact.html) redirected to their new website (i.e. NewWebsite.com/contact.html). Isn't that supposed to change the address bar's URL, too? For some reason, I visit their old site and I seem to be redirected to their new website but the address bar still has their old domain name? Something is going on???
#2 Having their new company name for 2 years now. People can enter her new company name in Google, MSN or Yahoo. Her new company name appears in the search results but has the old domain name associated with it. We are trying to get rid of any reference to that old domain name? What's the easiest way to do this? So what people see in search engines is:
New Company
Short Meta Description
www.OldDomain.com
What steps did I miss in this transition?
What steps do I have to take on their old website/old web server to control it's appearance on search engines and make sure people get to the new website?
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May 2, 2008
I am going to be sending a 2U server in for colocation. It will be running CentOS 5 64bit at the core and be utilizing VMware for virtual machines.
If I get say 8 ( 5 usable ) IPs as apart of my colocation plan, how can I delegate which IPs goto which virtual machine?
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Oct 1, 2007
What is the difference between CentOs 5.0 and Centos 4.5? (Both contains Plesk)
Would CentOS 5 contain more updates and fixes? CentOS 4.5 be more stable?
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Jan 17, 2009
my friend install VMware on his server to run vps, it looks likely interesting, do you use VMware to offer vps?
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