How To Check IP Address Availability
Apr 18, 2008where I can now ip is availble or not? and how i buy it?
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SAN - Fail Over / High Availability
Sep 24, 2009we are currently planning to implement SAN to our enviroment - VPS hosting.
Al VPS should be placed on the SAN - iSCSI connected to be able live motion etc.
Currently we are fighting with idea of Failover/High avalability.
There has been rumors that dual controller SAN from HP/DELL are much more problematic than single controller versions.
We are also thinking about running some opensource like OpenFiler/FreeNAS/OpenSolaris or NexentaStore on supermicro boxes with SATA or single RAID controller.
But in that case - how make the iSCSI target highly available? Mirroring of the data/space is pretty easy with DRBD or ZFS but when one SAN box goes down, there should be no interruption in iSCSI targe service - no IP change etc..
Equinix Ashburn Availability
Jan 11, 2007Is anyone aware of the current availability of colocation space at Equinix in Ashburn, VA? We are currently trying to obtain some space with them but getting my dedicated sales contact to respond is like pulling teeth! Are they so full (and thus full of themselves) that we will have to operate on THEIR terms (if at all)? At this point we are soliciting quotes from other datacenters of known lesser quality just so we can get this deployment live...
View 14 Replies View RelatedHigh Availability Project
Mar 21, 2008I am having a new mission to achieve and I really need some pro-Windows system to help me with their advices.
I have a server which requires high availability of data and service. Basically the server run a server/client service and all clients makes their operation over this server. The server is a simple Windows 2003 Web Edition server.
My goal is to have one server running (let’s say Tom with IP 192.168.0.1) and one running as stand-by (let’s say Jerry with IP 192.168.0.2) ready to take over if the first server crashes (this would remind pro-Linux some kind of DRBD and Heartbeat server).
So, the the first server run without problem, all transactions are going to be written in the directory “D:/Transactions”. This directory must be saved in real-time to the second server which stands in case of failure...
The first server also run a Windows service, which has to be stopped on the stand-by server and started ONLY if the first server is not working anymore.
I would like also the two servers (Tom and Jerry) to share a virtual IP address on the one which is having the service running, let’s say this IP would be 192.168.0.3.
When the first server goes offline hung or whatever, the second server take over, start the service and does the job of the first - when the first come back online, I re-sync the data from the second to the first and then, I switch it back (or all this fully automated if possible).
NOTE: the service that I need to run is special and is not one of the normal basic Microsoft service, it’s an in-house written service.
My question are :
- What software(s) do I need to do this ?
- Is there anything that I should be aware of ?
- Is there some provider (on both east and west) cost which can provide me help for the hardware part of this project ?
High Availability Cluster
Jun 17, 2008This is clearly the next logical step in hosting. Consider what RAID1 did for hard drive availability. Worried about your disk failing? No problem - throw in a duplicate. From a user/admin perspective the mirrored disks appear as one, highly reliable disk. Every modern OS supports this, even cheap motherboards support it, with a minimal amount of configuration.
The perfect high availability cluster should be completely transparent. Think about it... What if clustered hardware allowed you to manage a single instance of your chosen server OS with no worries about hardware/network/power failure?
The closest you can get to this finding a host that will give you a dual power supply server connected to different power feeds, dual network cards connected to different switches, and hot-swappable mirrored hard drives. This solution still doesn't give you any protection from CPU, memory, or motherboard failure.
I want a solution that is as simple to configure and manage as simple RAID1 mirroring.
High Availability Website
Jan 16, 2008I'm trying to determine what type of hosting setup (and hardware) I'd need for a web-site that expects 50,000 page views daily with peaks around 500,000.
the idea is to have it stable and serving content (almost all of which will be static).
Are there any hosting organizations or hardware configs that people would recommend?
Best Approach For High Availability
Jan 5, 2007We are trying to develop a design for a cluster of web servers at a single data center which will ensure that the cluster, as a whole, has very, very high availability.
Each of the servers is basically identical. They all serve web pages, and each can act relatively independently of the other.
Our initial thought was to put the servers behind a redundant, hardware-based, load balancing solution. The load balancers would be able to detect if any single webserver went down, and would redirect traffic to the other servers in that case.
An alternative -- less expensive -- solution that has been suggested to us is to use EtherChannel. We're concerned, however, that it might not be as robust an approach as the load balancer solution.
how we can best assure the high availability of our cluster?
Cost is an important consideration for us.
In addition, we'd prefer a solution that allowed for session maintenance. That is, once a user starts interacting with a particular server in our cluster, it would be nice if they could continue interacting with that particular physical server.
As an aside, I'll mention that we intend to implement this approach at two different data centers in different geographic regions, and use round robin DNS to further ensure high availability of the overall set of servers.
High Availability VPS Cluster
Aug 10, 2007I already have a VPS with Knownhost but since i'm hosting a critical application i really need High Availability.
Could anyone recommend a company that can provide me this?
I rent a VPS with them + pay additional tax and they conf a VPS Cluster.
The application is PHP + Mysql based. Everything is stored on MySQL and the PHP is only changed when there is a upgrade. Also, PHP is compiled with Ioncube ( doesn't know if this matters ).
Supermicro X8SIL RAM Compatability / Availability
Nov 3, 2009Has anyone been able to find any compatible RAM in 2G DIMMs for the SuperMicro X8SIL motherboard running either Corei7 or X34** LGA1156 processors? And what about reasonably priced 4G modules? I just want to make sure to purchase the right RAM before moving to a setup with this board / processor. Unless the RAM for this is crazy priced, I really don't want to go the Core2 Quad route when for about the same I can go with the newer LGA1156 stuff. But I have seen where people are having issues with RAM compatability and availability.
View 5 Replies View RelatedWebsite Availability Monitoring Service
Jan 6, 2009any recommendations for a website availability monitoring service? That is, I'd like a service that checks my site regularly, say every 5 minutes, and then calls my cellphone /txts-me if it ever goes down.
Googling around turns up a sizable number of places that do this. But, I'd like to make I'm going with somebody who's reasonably good.
Recommend A High Availability System
Jun 28, 2008We have created an ASP.NET (so solution needs to be windows) web service which other website will access to draw data.
I have been testing GoGrid, whilst the concept is great the uptime is not quite there at the moment, but its only Beta so this is to be expected.
I ideally want a load balanced system, but one that can detect failure and stop directing traffic to the failed server.
Can anyone recommend a company with an option for load balancing with failure detection?
HA Building High Availability Systems?
Aug 1, 2008has anyone had experience in building high availability systems?
View 0 Replies View RelatedApache :: How To Use Virtual Host IP Address In Request To Remote Address
Feb 6, 2015My customer has an external facing Apache server that is acting as a reverse proxy to two internal applications. They have:
- external addresses for each app which resolve to different ip addresses, so app1.their_domain.com and app2.their_domain.com resolve to 77.3.170.10 and 77.3.170.11 respectively.
- the Apache server has two network interfaces with ip addresses 192.168.10.10 and 192.168.10.11
- the external ip addresses resolve to the above internal addresses
- the firewall between the Apache server and the internal app servers is configured to allow traffic from 192.168.10.10 to reach app_server1, and traffic from 192.168.10.11 to reach app_server2, both using port 7777.
I have configured a virtual host in httpd.conf for each ip, i.e.
Code:
<VirtualHost 192.168.10.10:80>
...
ProxyPass /app http://app_server1:7777/app
ProxyPassReverse /app http://app_server1:7777/app
RewriteRule ^/$ /app/app1 [R,L]
...
<VirtualHost>
and
Code:
<VirtualHost 192.168.10.11:80>
...
ProxyPass /app http://app_server2:7777/app
ProxyPassReverse /app http://app_server2:7777/app
RewriteRule ^/$ /app/app2 [R,L]
...
<VirtualHost>
This works fine in that the external address are being routed to the correct application, however the firewall is blocking requests to the second app as it appears the requests are coming from the Apache servers 'primary' ip address 192.168.10.10 instead of 192.168.10.11.
Is it possible to send requests using the ip address from the relevant VirtualHost?
Windows server 2008
Apache 2.2
Virtuozzo Firewall :: Is It Possible To Enter Two Different Ip Address In Source Address?
Aug 4, 2008I am using virtuozzo firewall to secure access.
I enter 58.27.175.211/255.255.255.0 for Source Address and Netmask for port 22.
But still I can connect using 58.181.103.217 or 58.27.151.120.
Second is it possible to enter two different ip address in source address?
How To Check Load Via Ssh And Check Files Causing Load
Jul 1, 2009I would like to know how to check load via ssh and check files causing load?
I want the ssh codes for 2 different set of control panels, one with cpanel+whm and other with kloxo+hypervm
and I would also know how to check the files causing the load, such as some files could have been interrupted while processing, so they could be causing load some times, so I want to stop such processes if any are running on the vps on my friends accounts
How Do I Setup A New Ip Address As My Server's Main Ip Address
Jul 26, 2007I just bought a new ip address and want to setup this new ip as my server's main ip, making the 'existing main ip' as the secondary ip.
Which means, this new ip will be the server's default ip address for all services, including when connecting to other server.
I'm using CentOs 4.5 and swsoft's panels: HSPcomplete & Virtuozzo Power Panel, and Webmin.
URL Redirection Without Changing The Address In The Address Bar
Nov 8, 2007I want to redirect a website to a particular URL so that the address bar shows the same URL and not the destination URL. I know it is possible via URL masking, however, I want it in such a way that whenever somebody clicks on any link in the website, the address bar should still show the original URL. To put it in simple words, Suppose I want to redirect [url] to [url]. Now if there is a link named contact/index.htm and somebody clicks on it the address bar should display [url]and not redirect to [url]
How can it be possible using URL Rewrite method in .htaccess file?
98)Address Already In Use: Make_sock: Could Not Bind To Address [::]:443
Aug 4, 2007The problem usually goes like this:
- I can't access the webserver
- I'll try to restart httpd, and I'll get
Starting httpd: (98)Address already in use: make_sock: could not bind to address [::]:443
To fix this, I run
[root@www1 ~]# lsof -i tcp:443
COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME
perl 11307 apache 4u IPv6 476943447 TCP *:https (LISTEN)
There is always leftover process that is causing the restart to fail. Once i force kill the process, I am able to restart httpd properly.
Now it is ok if this just occurs once in a while, but this problem keeps repeating itself almost everyday at 4am server time (cron time?). What can I do to permanently fix this?
How To Check VPS Os
Apr 10, 2008i recently purchased a VPS from internetvps.com, but im not sure what OS of linux it is. How can you check the OS of the server?
View 10 Replies View RelatedHow To Check Ram
Jun 7, 2007Let's say I have a VPS with 512 MBs of RAM.
How do I check in shell that this is indeed the case?
I read in some places that "top" and "free -m" and such can help.
But these gave me way more than 512.
Here is the output from my "free -m". Total shows here 3886 MBs of MEM??? That is almost 4 Gigs. Please someone explain this.
total used free shared buffers cached
Mem: 3886 3721 164 0 17 542
-/+ buffers/cache: 3161 724
Swap: 6142 2020 4121
Nobody Check
Mar 20, 2007Quote:
Nobody Check 1.0.3 Current on cPanel
Tue Mar 20 16:00:02 SGT 2007 on blue.mydomain.com
Server Load: 16:00:02 up 21 days, 14:02, 0 users, load average: 2.73, 2.20, 2.08
Warning: Malicious Nobody Process Found
=========================================
Options: kill bad proc=1 logging lvl=1
SCAN SUMMARY
========================================
Clean Processes: 57
DETECTED Malicious Processes: 1
DETECTION DETAILS
========================================
DETECTION: Process 4221 with name php and path /usr/bin/php
Process ID: 4221 has been killed
Restuls for PID: 4221
total 0
dr-xr-xr-x 3 easyzz easyzz 0 Mar 20 16:00 .
dr-xr-xr-x 291 root root 0 Feb 27 10:01 ..
dr-xr-xr-x 2 easyzz easyzz 0 Mar 20 16:00 attr
-r-------- 1 easyzz easyzz 0 Mar 20 16:00 auxv
-r--r--r-- 1 easyzz easyzz 0 Mar 20 16:00 cmdline
lrwxrwxrwx 1 easyzz easyzz 0 Mar 20 16:00 cwd -> /home/easyzz/public_html
-r-------- 1 easyzz easyzz 0 Mar 20 16:00 environ
lrwxrwxrwx 1 easyzz easyzz 0 Mar 20 16:00 exe -> /usr/bin/php
dr-x------ 2 easyzz easyzz 0 Mar 20 16:00 fd
-rw-r--r-- 1 easyzz easyzz 0 Mar 20 16:00 loginuid
-r-------- 1 easyzz easyzz 0 Mar 20 16:00 maps
-rw------- 1 easyzz easyzz 0 Mar 20 16:00 mem
-r--r--r-- 1 easyzz easyzz 0 Mar 20 16:00 mounts
lrwxrwxrwx 1 easyzz easyzz 0 Mar 20 16:00 root -> /
-r--r--r-- 1 easyzz easyzz 0 Mar 20 16:00 stat
-r--r--r-- 1 easyzz easyzz 0 Mar 20 16:00 statm
-r--r--r-- 1 easyzz easyzz 0 Mar 20 16:00 status
dr-xr-xr-x 3 easyzz easyzz 0 Mar 20 16:00 task
-r--r--r-- 1 easyzz easyzz 0 Mar 20 16:00 wchan
Netstat:
Environ:
Hello, I got this notification from the 'Nobody Check'.
Is there anything I need to be aware of? ..
Mem Check
May 22, 2007confirm this is only 1gig of ram?
Mem: 1034096 985128 48968 0 157944 559136
-/+ buffers/cache: 268048 766048
Swap: 2040212 160 2040052
Total: 3074308 985288 2089020
CSF Security Check
Apr 20, 2009I'm running CSF on a Cpanel server and have questions about new features in CSF
Apache Check
Check Apache weak SSL/TLS Ciphers (SSLCipherSuite)
Results
Cipher list []. Due to weaknesses in the SSLv2 cipher you should disable SSLv2 in WHM > Apache Configuration > Global Configuration > SSLCipherSuite > Add -SSLv2 to SSLCipherSuite and/or remove +SSLv2. Do not forget to Save AND then Rebuild Configuration and Restart Apache, otherwise the changes will not take effect in httpd.conf
Can someone explain this in laymen terms? I know this is new in Cpanel. I'm already running Apache 2.2, PHP 5.2.9 with suPHP enabled and mod_security as well (these rules: [url]
Also, what exactly are these CSF checks?
Check csf PT_SKIP_HTTP option
This option disables checking of processes running under apache and can limit false-positives but may then miss running exploits
Check csf SAFECHAINUPDATE option
This option closes a window of opportunity that opens when dynamic chain updates occur
How To Check If The HD Is SSD Drive
Jun 11, 2009how to check using SSH if the HD is SSD drive in a linux box?
View 1 Replies View RelatedHow Can Check Ddos
Jul 18, 2009How can we be sure that we are facing ddos attacks any good command which will make me 100 percent sure that there is ddos attacks on server ?
View 12 Replies View RelatedPossible To Run A Hardware Check On My VPS?
Feb 26, 2009Is it possible to run a hardware check on my VPS?
For instance DFT (Drive Fitness Test) or Memtest?
I'm running HyperVM and WHM.
How To Check IP If It Can See My Server
Apr 10, 2009I have one client who cannot see my server and all domains on it. I;ve checked if his IP is block or not and I didn't see his IP on the apf deny host file. How to you check IP if it can see my server? I just want to make sure before calling the ISP.
View 3 Replies View RelatedHow To Check Flv/encoders
Jul 22, 2008I used this script
[url]
Now, via command line how can I check that ALL these work and are enabled for example? I'm not talking about visually seeing the files there, I mean actually enabled.
Unsubscore Check
Apr 11, 2008I recently added ubl.unsubscore.com to my email server. I only have that one and the SpamHaus (Zen) activated.
I am able to see the SpamHaus listed on DNSStuff and on SpamHaus website that the person trying to email me is not listed.
So I have to think that it is ubl.unsubscore.com list. But what domain name can I enter into the browser to check this list? www.unsubscore.com does not work. A little searching led me to lashback, but the IP is not listed there either.
BGP4 Check
Aug 6, 2008You know, maybe, how to check if my provider has bgp4?
Via unix command or somnething...