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• Run Logstalgia on Remote Global Apache Log On a WHM System

  - by macinjosh

  I work for a small web development shop. We have a dedicated Linux server running WHM. For fun we want to run Logstalgia on a machine in our office. We'd really like it to display information about all the traffic on our server. Logstalgia use Apache's access logs to generate its visuals, the problem I have is that by default WHM does not have an access log for all sites combined. How can I safely configure our server to output a combined/global Apache access log in a place accessible by a non-root SSH user? I am also concerned that this file could get quite large so I think I'd also need to know how to have it automatically shed old information. To make things more interesting I'm a programmer not a sys admin so not everything is immediately obvious to me.

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• One domain hiding two servers

  - by George DSeas

  For our SaaS web-app we have two identical servers in two geographically separated data centers. FOO_1 is the production server and does real-time (MySQL master-slave) replication to its backup F00_2. We want our users to always go to THEFOO.COM which somehow points to the production server. So even if FOO_1 dies, we can just switch THEFOO.COM to redirect to FOO_2 so the failure is transparent. This switch can be manual or automatic but without failback (if FOO_1 somehow becomes available again). Is there a way to do this with DNS? I am getting stuck with ANAME and CNAMEs configuration. We don't use sub-domains, just straight domains. If not, what are other options? Does it make sense to just have a web server at LOVELY_FOO.COM and just redirect all traffic? I also looked at load balancers but didn't see a solution for across data centers/network providers.

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• Latency in Sending and Receiving Files From Amazon EC2 - Justification

  - by Adroidist

  I am facing a huge delay while uploading and downloading files from my Windows Amazon EC2 server to my android device. It takes around 50 seconds to upload then download 500 Kbytes image. My location is in asia and the server is is US-East. I pinged the server from my android and obtained values around 500 ms for RTT. Is this normal? How is this explained? I tried this website: http://cloudharmony.com/speedtest/run and obtained that downloading 270 Kbytes file takes around 20 seconds. How is this delay justified?

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• Cant connect to asterisk internal database [on hold]

  - by Bilbo

  Im trying to get a PHP script to connect to Asterisks internal mysql database. I tried the to use the standard method for example $con = mysqli_connect("192.168.1.126","root","mysql","asterisk"); However when I log into the asterisk server to access the mysql database all i need it to type "mysql" and im logged in. Im wondering is it possible for my php script to connect to asterisk internal database. The following error is shown: Warning: mysqli_connect(): (HY000/2003): Can't connect to MySQL server on '192.168.1.126' (111) in /var/www/html/project/sipSubScript.php on line 6 Failed to connect to MySQL: Can't connect to MySQL server on '192.168.1.126' (111)

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• Redhat with a reverse proxy, a specific configuration

  - by jessica

  The setup I am trying to put together consists on a server connected to the internet (a redhat box) and 2 Apache Tomcat boxes not connected to the internet. Let's call the server Server and the two Apache Tomcats, Apache1 and Apache2. So, assuming my external IP is 102.1.1.1, Apache1 is 10.1.1.1 and Apache2 is 10.1.1.2, what I'm trying to configure is a reverse proxy so that if the request goes into http://102.1.1.1/mywebserver1/ it will be directed to Apache1 and if the request goes into http://102.1.1.1/mywebserver2/ it will be forwarded to Apache2. Now, I don't need a cache on the proxy since there is application sitting in those tomcats and each request needs to get a fresh answer. I searched for a while and I tried building this with Squid but i can't get it to work the way I need it. Anyone knows how to do this? What software do I need? How do I configure the reverse proxy? Thanks! jessica

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• Handling range in CNAME

  - by Imran

  We have different set of CNAMEs pointing to different subdomains. These subdomains (a.domain.com, b.domain.com) are pointing to different IPs on different machines. # Server A a1.domain.com pointing to a.domain.com a2.domain.com pointing to a.domain.com .. aN.domain.com pointing to a.domain.com # Server B b1.domain.com pointing to b.domain.com b2.domain.com pointing to b.domain.com .. bN.domain.com pointing to b.domain.com Currently, we have to add individual CNAME entries (eg. a1... aN) against a single subdomain (a.dominan.com). We repeat the above process for every new server which is actually another subdomain (e.g. c.domain.com). Is there a way we can specify a range of CNAMEs (e.g. [a1..a25].domain.com point to a.domain.com) instead of adding separate CNAME etnries? Is there any possibility to handle this at DNS or webserver (apache or Nginx) level?

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• Hyper-V performance comparisons vs physical client?

  - by rwmnau

  Are there any comparisons between Hyper-V client machines and their physical equivalent? I've looked around and can find 4000 articles about improving Hyper-V performance, but I can't find any that actually do a side-by-side comparison or give benchmarking numbers. Ideally, I'm interested in a comparison of CPU, memory, disk, and graphics performance between something like the following: Some powerful workstation (with plenty of RAM) with Windows 7 installed on it directly Same exact worksation with Hyper-V Server 2008 R2 (the bare Server role) and a full-screen Windows 7 client machine Virtual Server 2005 had performance that didn't compare at all with actual hardware, but with the advances in CPU and hardware-level virtualization, has performance improved significantly? How obvious would it be to a user of the two above scenarios that one of them was virtualized, and does anybody know of actual benchmarking of this type?

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• failover cluster file replication

  - by user156144

  I have a Windows 2008 R2 failover cluster server. I am going to move one of our window services onto this new server. The service writes some trace information to a log file on the local harddrive. This will become a problem when it is moved to cluster server when cluster A become unavailable and cluster B takes over and now there are 2 places where I need to look for log files. Is there a way to make sure regardless of which cluster is on, I get one complete log file? I have been researching this and there is something called DFS replication but i was wondering if there is something better that works with failover cluster... I prefer not having to update my code. I can specify it to write log files to a different location by changing app.config file but no code change...

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• Failed reverse DNS and SPF only when using Thunderbird!

  - by TruMan1

  I have a reverse DNS and SPF records correctly setup for my mail server. Sending webmail from it works perfect. The problem is when Thunderbird sends out emails, it is using the client's IP address for the hostname. I have SMTP authentication and specified my mail server's as the outgoing SMTP. Mail is being sent, but it is not "signing" the email with the mail server's IP address.. it is using the client's. Is there any way to fix this? This is the spam error I get when sending from Thunderbird: Spam: Reverse DNS Lookup, SPF_SoftFail

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• monitor network bandwidth via ssh

  - by ServerSideX

  I'm running a Centos 6.4 server with cPanel. WHM (admin side panel) shows about 100GB of bandwidth this month. However, the server's RTG shows 3.4TB last 30 days, 121GB past 24 hours alone. Doesn't make sense. I'm trying to trace the cause of this. It's a shared web hosting server for approximately 300 domains. I would appreciate help tracing this down somehow. I utilize CSF firewall and Configserver exploit scanner as well. Day http://s10.postimg.org/ti1qhj5mx/day.png Week http://s7.postimg.org/8ho8kds57/week.png

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• Using NDMP as an alternative to CIFS mount

  - by user138922

  I have a weird but interesting use-case. I use CIFS to mount shares from a File Server (NetApp, EMC etc) to an application server (win/linux server where my application runs). My application needs to process each of the file from the shares that I mount via CIFS. My application also needs access to the meta-data of these files such as Name, Size, ACLs etc. I would like to see if I can achieve the same via NDMP. I have some very basic questions regarding this use-case. It would be great if you guys can help me out here. Is this even something which is achievable? Can I just transfer share that interest me instead of entire volume?

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• I am unable to find login page for phpmyadmin

  - by Awan

  I was using phpmyadmin(in Wamp) without a password for root. I thought to set a password for root and goto Privileges page and set a password for root. Now whenever I go to localhost/phpmyadmin page it gives me the following error. MySQL said: Documentation #1045 - Access denied for user 'root'@'localhost' (using password: NO) phpMyAdmin tried to connect to the MySQL server, and the server rejected the connection. You should check the host, username and password in your configuration and make sure that they correspond to the information given by the administrator of the MySQL server. I don't know that what is the problem. It is not showing me a login type page to enter a username and password. Any idea that what is the problem ? Thanks

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• Windows 7 Multi Monitor RDC Problem [closed]

  - by Peter Stegnar

  Possible Duplicate: Windows remote controle for dual monitor setup I would like to use all my monitors for the remote session (an option in RDC dialogue) if I connect (from Windows 7) to the one server with Windows 2008 R2 it works OK (I have remote connection on my all monitors) when do I connect to the another server with Windows 7 it just wound not use all my monitors, but just one (full screen mode). What do I missing here? Some setting on the Windows 7 server? Basically my question is: How to establish multimonitor RDC connection from Windows 7 to another Windows 7 running computer?

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• Perl script and out of memory errors

  - by Kevin

  We have a midsized server with 48GB of RAM and are attempting to import a list of around 100,000 opt-in email subscribers to a new list management system written in Perl. From my understanding, Perl doesn't have imposed memory limits like PHP, and yet we are continuously getting internal server errors when attempting to do the import. When investigating the error logs, we see that the script ran out of memory. Since perl doesn't have a setting to limit the memory usage (as far as I can tell) why are we getting these errors? I doubt a small import like this is consuming 48GB of ram. We have compromised and split the list into chunks of 10,000, but would like to figure out the root cause for future fixes. This is a CentOS machine with Litespeed as the web server.

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• Dicom: What are my options?

  - by Peter Turner

  After a cursory Googling, I can't find a legitimate list of DICOM vendors. I've tried DCM4Chee, Conquest, and PacsOne. Each server seems to have it's own quirks and annoyances, memory leaks, etc... I'd like to see what people use for their DICOM servers. Usually Wikipedia would have something like this at the bottom of the article, but it doesn't so I'm wondering if the SF community can create a canonical list. I must admit that whereas I do not represent any DICOM server vendor. There is a guy in my office who will buy me a huge burrito for each DICOM server I successfully install.

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• Using VLANs that are routed together?

  - by dannymcc

  I have a quick question that's bugging me the more I read about VLANs. So far I understand that they are useful for dividing the network into sub-sections, but if you route them together does that not remove any security benefit? As an example, if I created a VLAN on my home network which was simply one computer, one server and one router.if I wanted to divide the network between computers and servers I could put the computer on VLAN 10 and the server on VLAN 20. Then the computer would no longer be able to communicate with the server - unless I added a static route to the router that connected the two together, basically telling VLAN 10 that VLAN 20 exists and how to communicate with it. The VLANs would then be connected in a similar way to a 'flat' network that has no VLANs. Therefore, surely, all security benefits are lost. Am I missing something?

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• How do I resolve active directory connection errors when using dcpromo?

  - by Middletone

  When attempting to promote a secondary server to an existing active directory forest I receive the following error message and can no longer continue. Failed to examine the active directory forest. Value ridMasterDSA.partentDN not found What can cause this and what can be done to fix it? Both servers are 2008 running on x64 and can see each other on the network via their names. FYI: The firewall is turned off on both machines so there should be no issue there. Also the server that i'm adding is already a part of the domain. One server is already a domain controller but I want to add a second to it.

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• an unknown ip on network

  - by Ahmed safan

  In our office we have many PCs, all of them have static IP addresses. We had a problem with one server with ip 192.168.1.10 dropping off the network occasionally. I unplugged the network cable from the server and from pinged 192.168.1.10 from another host and there was a response. I searched all PCs to see if any has such ip but i didn't found a one. I changed the server ip to fix the problem, but I still find this rogue device using 192.168.1.10 on the network -- how can I figure out what it is? Could it be the ip of virtual machine on someone's PC?

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• Exchange Disconnecting on EHLO with remote telnet

  - by Timothy Baldridge

  When I go to the local terminal on my Exchange box (SBS 2008) I can do this: telnet 127.0.0.1 25 220 Exchange banner here EHLO example.com 250 Server name However when I go from another box, or from the actual IP of the server I get this: telnet 192.168.21.20 25 220 Exchange banner here EHLO example.com 421 4.4.1 Connection timed out Connection to host lost. The odd thing is, this server is currently in production and working fine (receiving mail for our entire domain). But my C# programs can't send mail to it (they get this same error). Any ideas?

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• How to test web application performance from other continent?

  - by Thomas Einwaller

  We are hosting our web application http://timr.com on a server located in Germany. The server handles a high load of traffic very well and everything works as desired in terms of performance and load times. However we sometimes get complaints from our overseas users (US, South America) that the experience slow page loading times. What would be the best way to test the performance of a web application "as if you are on another continent"? I want to make sure that the distance between the server and the user is no problem?

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• Setting lusca and dansguardian iptables on Ubuntu 12.04 to prevent loop

  - by Heri YT

  I have a server with ubuntu 12:04 operating system, which runs as a proxy cache server lusca and DansGuardian as well as internet content filter. With the following composition: the client browser - lusca - DansGuardian - internet. And all this running only on one machine only, the following is a partial configuration on my server lusca: http_port 3128 transparent cache_peer 192.168.0.1 parent 8080 0 no-query no-digest no-netdb-exchange default which is also only found on the DansGuardian default settings namely: filterip="blank" filterport=8080 proxyip=192.168.0.1 proxyport=3128 The question is: Can all goes well? By simply relying on one machine only? What causes the "WARNING: Forwarding loop detected for:"? is not problematic if we leave? How to solve "WARNING: Forwarding loop detected for:" found in / var / log / lusca / cache.log Thank you.

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• Centralized sudo sudoers file?

  - by Stefan Thyberg

  I am the admin of several different servers and currently there is a different sudoers file on each one. This is getting slightly out of hand as quite often I need to give someone permissions to do something with sudo but it only gets done on one server. Is there an easy way of editing the sudoers file just on my central server and then distributing it by SFTP or something like that to the other servers in an easy way? Mostly wondering how other sysadmins solve this problem, since the sudoers file doesn't seem to be remotely accessible with NIS, for example. Operating system is SUSE Linux Enterprise Server 11 64-bit, but it shouldn't matter. EDIT: Every machine will, for now, have the same sudoers file. EDIT2: The accepted answer's comment was the closest to what I actually went ahead and did. I am right now using an SVN-supported puppet-installation and after a few headaches, it's working very well.

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• IIS FTP service - download timeouts and restarts getting the data twice

  - by accel229

  We have an IIS FTP site on a Windows Server 2003 x64 machine. Application Layer Gateway service is disabled (so http://support.microsoft.com/kb/931130 does not apply). Windows Firewall service is disabled as well. Connection timeout for the FTP site (there is only one) is set to 1,200 seconds = 20 minutes. An external client can connect to the site, list directory contents and download small files. When a client attempts to download a large file (eg, if the download continues for 3 minutes, which is still under 20 minutes, but relatively long), the server sends all data, then the connection times out, the client issues REST / RETR commands attempting to restart the download since after the last byte (which I believe should succeed and receive exactly 0 bytes), and the server behaves as if the client tried to restart after byte 0, that is, it sends the entire file all over. Any ideas on how to fix this?

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• rsync error: some files/attrs were not transferred

  - by Daniel Ball

  Using rsync(ubuntu) and a DeltaCopy server on W2K3 to back up some of the data on the file server before I migrate from W2K3 to Ubuntu server. After it completed I ran a dry run just in case something had been missed or changed ... I got the following: sudo rsync -az -n 198.3.9.25::Music /mnt/raid/music [sudo] password for daniel: file has vanished: "?????\#267????" (in Music) file has vanished: "????????" (in Music) ... rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1526) [generator=3.0.7] I just want to make sure I'm reading it right, that somehow there are files on the receiving end that aren't on the sending?

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• Qmail does not forward mail to a specific domain

  - by jahufar

  Hi I have a dedicated hosting account with GoDaddy.com. I've pointed my domain's email to work with Google apps. The server has qmail running and it forwards email to all domains just fine except for MY domain (mydomain.com) - it says 550 User xxx not found in mydomain.com I believe it thinks I've hosted email on the server itself (not gmail) and it's trying to validate if [email protected] exists on my server (which is not the case since it's all handled by google apps). How do I make it forward mail to all domains? Thank you :) EDIT: I would only need it forwarding emails if the connection originates from 127.0.0.1 - which I believe is the default way it's configured. So to clarify: I just need a purely forwarded configuration so my PHP scripts have the ability to send email.

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