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• How to rotate log files when running pyapns and twistd

  - by Henrik

  I use pyapns (Iphone push server) which in turn uses twisted (twistd daemon). twistd daemon produces twistd.log files. It rotates them to twistd.log.1, twistd.log.2 and so on when twistd.log reaches 1MB but it doesn't use logrotate so I guess it's built in. The problem is that this continues forever and that old log files are never deleted. This eventually fills my disk. I've tried to use logrotate or similar to rotate the logs, but then I would need to run logrotate very very often since I need to rotate BEFORE twistd.log reaches 1MB. This could happen within a second for all I know depending on how much log is produced. So how could I logrotate without hacking pyapns/twistd scripts?

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• How to turn SSLCompression off in Apache 2.4.3?

  - by kumar

  I have installed Apache 2.4.3(OpenSSL 1.0.0j) on a machine and trying to do SSLCompression off in the ssl.conf file throws an error: Syntax error on line 219 of /etc/httpd/conf.d/ssl.conf: Invalid command 'SSLCompression', perhaps misspelled or defined by a module not included in the server configuration What could be wrong here? If it helps, I installed mod_ssl(2.4). Is that enough or is something more to be done to configure Apache with mod_ssl. I tried phpinfo() in php, and mod_ssl is reflected in the Loaded Modules section.

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• Problems with connecting to ASM instance

  - by Rodnower

  I have Oracle11 with RAC installed on RedHat 5. I have two servers with two instances one on each one. In each server I succeed connect to appropriate instance of database but not to instance of ASM. I connect with user oracle11 and type: export ORACLE_SID=+ASM1 sqlplus "/ as sysdba" It connects but write: Connected to an idle instance and when I try to access to parameters or views I have errors. For know that +ASM1 is the SID I type: ps aux | grep pmon and get: asm_pmon_+ASM1 I tried also with +ASM but it was also unsuccessfully. What is wrong here?

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• How to create chroot jail with ability to change some system settings

  - by Tadeck

  How to properly create chroot jail (on Ubuntu, or some some other Linux if not applicable) to make user able to edit system settings (eg. with ifconfig) and be able to communicate with external scripts? The use case would be to enable user to authenticate using SSH and then be able to perform very limited set of actions from command line. Unfortunately the tricky part is the access to system settings. I have considered multiple options and the alternative is to setup fake SSH server (eg. with Twisted), try to use restricted shell (however, I seem to need chroot still), or write a script on top of the shell (?).

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• rsyslog from Heroku drain creates empty log files

  - by Jeff Lee

  I'm sending logs from my Heroku app to an rsyslog server, but the resulting log files seem to come up empty. The rsyslog configuration for receiving remote messages is as follows: $template RemoteDailyLog,"/var/log/remote/%hostname%/%$year%/%$month%/%$day%.log" :fromhost-ip, !isequal, "127.0.0.1" -?RemoteDailyLog & ~ My complete rsyslog configuration is available in this paste. This configuration appears to create the directories correctly. I see the Heroku app's logging hostname (of the form "d.xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx") appear in /var/log on the rsyslog host, which implies that log messages are successfully making it to the logging daemon, but the resulting logfiles are zero-size. I'm guessing the issue is with rsyslog, rather than Heroku, but I'm not sure where to look next.

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• idle proccesses and high memory bad? uwsgi/django

  - by JimJimThe3rd

  I have a VPS with 256MB of ram. I'm running nginx, uwsgi and postgresql on Ubuntu 12.04 for a soon to be Django site. About 200MB of ram are being used despite the website not being active, the uwsgi processes seem to just be idling. Is this bad? I once heard that having a bunch of free memory isn't necessarily a good metric because it is possible that the memory in use can easily be freed up. I mean, it is possible that the server is storing commonly used "stuff" in case it is accessed but is more than happy to dump it if the ram is needed. But I'm really not sure, hence me asking this question. If it is bad I could set some of the application loading options for uwsgi like "cheap" or "idle" mode. Screenshot of my htop

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• Wildcard dns as subdomain in localhost using apache

  - by Sankaranand

  Hi, i am developing a web application in Zend Framework running in apache server (xampp). The site can actually be accessed by http://localhost/sitename . It is present in c:/xampp/htdocs/sitename/ I wanted to create wildcard dns so a specific user can access my webpage like username.localhost.... i will fetch the username as parameter and show the customized settings for him.. Can someone help me with it... Do i have to first assign a servername for my localhost/sitename ? and then think about adding subdomain wildcards ? Please enlight me...

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• Do I make the correct difference between spwan-cgi and mod_fcgi

  - by Saif Bechan

  First of all im configuring an webserver with nginx and apache2 working together. Having only nginx is no options for me, neither is lighttdp. I am reading a tutorial 'Nginx -Apache -Proxy configuration on Centos-Plesk server' where this is exaplained in some detail. One thing i don't really understand. They are talking about installing spawn-fcgi to spawn the fastcgi process. Now if i understand this correct this program is only for nginx apache will run as normal. Apache will just run the mod_php5.c. If i want to have apache also work as fastcgi i have to confirgure that seperately, and let apache use mod_fcgi. Do I have this correct or am I talking utter nonsense. Nginx usses spawn-cgi as frontend Apache usses mod_fcgi in the back Inbetween there is a proxy that ports port 80(nginx) to port 8080(apache)

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• Implementing a form of port knocking + Phone Factor = 2 Factor auth for RDP?

  - by jshin47

  I have been looking into how to secure a publicly-available RDP endpoint and want to implement our two-factor authentication RADIUS server, PhoneFactor. I would like to implement the following process: User opens up web app in browser In web app, user enters username + password, initiates RADIUS auth Phone factor calls user to complete auth Once user is authenticated, port 3389 is opened on user's IP on pfSense firewall. After some amount of time, firewall rule is removed for that IP I would like to know the following: Is this a typical setup? If it is a bad idea, please explain why. If it is possible, are there any packages that assist with this? Specifically, the third step, where the appropriate firewall rule would need to be added... Edit: I am aware of TS Web Gateway, but I want the users to be able to use the traditional RDP client...

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• WCF Communication Problem

  - by vincpa

  Two separate servers, one is an IIS7 web application trying to connect to a WCF service on the other server. The initial connect always fails, sometimes the second, after that, everything works normal. What could be the cause of this problem? The exception that gets thrown is EndpointNotFoundException Could not connect to net.tcp://192.168.0.83/MgrService/Manager.svc. The connection attempt lasted for a time span of 00:00:21.0289348. TCP error code 10060: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 192.168.0.83:808.

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• new SBS 2011 Standard problems

  - by Damon

  Brand new SBS 2011 install. I went to remove the DHCP server role. It went into a "Preparing to configure Windows. Do not turn off your computer." Been there for hours. Finally, decided to power off and restart. After boot up, the same window and message appear and it just sits there spinning. "Preparing to configure Windows. Do not turn off your computer." I'd love to get this installed before the end of the day but it doesn't look like that's possible. Any ideas on how to get passed this?

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• 1000 HZ linux kernel necessary if I have tickless and high resolution timer?

  - by Bob

  I am trying to improve performance on my server. I have a few processes that need low jitter (less than 10ms variance). I have a load average of 4 maximum on an i7-920 (4 physical cores, 8 with HT). There are about 10 processes ranging from 40% to 90% of a core user mode. System usage is 3% total. Total CPU usage is 80% max. Will setting the kernel from 100hz to 1000hz improve the jitter if tickless and high resolution timers are already set? This page seems to indicate it still does something. https://lkml.org/lkml/2009/4/28/401 How about changing from voluntary (PREEMPT_VOLUNTARY) to preemptible (PREEMPT)?

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• TIME column in TOP command for mysql

  - by michael

  When I run top on my database server I get that mysqld has been running for 4:00.51 and it continues to go up. I assume this means that one process with mysql has been running this long from other posts on here. Its not set to cumulative mode as best I can tell as the heading looks like it would change to CTIME if that be the case. What I'm wondering is if this is normal for a site that makes a lot of individual connections using PHP. I shouldn't have any long running processes that would hold on to a mysql connection for this long, only seconds at most. Am I incorrect to assume that this time relates to one connection/process running? I think usually I see it flash up and away on the TOP, not just stay there with this number increasing.

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• Dovecot ignoring maximum number of IMAP connections

  - by Michelle

  I have a single mailbox mail server running Dovecot/Postfix and I have two IMAP clients, Thunderbird on the PC and K9 on Android. I keep on receiving this error in my logs even after I change the 'mail_max_userip_connections' variable to 50. puppet dovecot: imap-login: Maximum number of connections from user+IP exceeded (mail_max_userip_connections=10): user=<[email protected]>, method=PLAIN, rip=62.242.90.2, lip=198.29.31.229, TLS Why does it say that it is set to 10 in the log? Is that hardcoded? grep -r "mail_max_userip_connections" /etc/dovecot /etc/dovecot/conf.d/20-managesieve.conf: #mail_max_userip_connections = 10 /etc/dovecot/conf.d/20-pop3.conf: #mail_max_userip_connections = 3 /etc/dovecot/conf.d/20-imap.conf: mail_max_userip_connections = 50 I've restarted dovecot after making the changes but this error is still logged and I can't access the mailbox. Can anyone help me understand why I can't seem to raise the maximum limit?

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• Install remote desktop session host remotely

  - by Jorge

  I've removed the remote desktop host role from one of my Azue VM, so I can't RDP into it. I have tried to recreate the endpoints and even the VM with no luck. I can't either access remotely with Server Manager; getting this error: The client cannot connect to the destination specified in the request. Verify that the services on the destination is running" I cannot connect remotely to the registry Make sure this computer is on the network, has remote administration enabled, and that both computers are running the remote registry service PsPing tells me The remote computer refuses the network connection Which workaround can I follow to solve this?

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• Determining Performance Limits

  - by JeffV

  I have a number of windows processes that pass messages between them hat a high rate using tcp to local host. Aside from testing on actual hardware how can I assess what my hardware limit will be. These applications are not doing CPU intensive work, mostly decomposing and combining messages, scanning over them for special flag in the data etc.. The message size is typically 3k and the rate is typically ~10k messages per second. ~30MB per second between processing stages. There may be 10 or more stages depending. For this type of application, what should I look to for assessing performance? What do I look for in a server performance wise? I am currently running an XEON L5408 with 32 GB ram. But I am assuming cache is more important than actual ram size as I am barely touching the ram.

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• Creating an office network and monitoring all activity without a proxy

  - by Robert

  We are setting up our office network and would like to track all the websites visited by our employees. However, we would not like to use any proxy based solutions. Our work is highly dependent on applications in which you cannot configure a proxy. Hence, the approach we would like to follow is setting up a router inside a computer (something like this : http://www.techrepublic.com/article/configure-windows-server-2003-to-act-as-a-router/5844624) This will also allow us to attach multiple ethernet cards and have redundancy in internet connectivity with complete abstraction from the user about which connection is being used. But most importantly, since all the traffic will be going through the computer (configured as a router) I assume there will be a way to run packet analysis on all the request / responses being made. For example, list all the FTP servers connected to (port 21), give a graph of all the URLs visited per day by frequency. Is there already a software which does this ? Or is it possible to build something like this ?

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• SSL certificate: unable to get local issuer certificate

  - by celwell

  I'm running Debian (Lenny). When I run this: curl --ssl https://www.google.com I get this error: curl: (60) SSL certificate problem: unable to get local issuer certificate More details here: http://curl.haxx.se/docs/sslcerts.html curl performs SSL certificate verification by default, using a "bundle" of Certificate Authority (CA) public keys (CA certs). If the default bundle file isn't adequate, you can specify an alternate file using the --cacert option. If this HTTPS server uses a certificate signed by a CA represented in the bundle, the certificate verification probably failed due to a problem with the certificate (it might be expired, or the name might not match the domain name in the URL). If you'd like to turn off curl's verification of the certificate, use the -k (or --insecure) option.

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• How can I upgrade PHP on Windows 7?

  - by jasondavis

  I am currently running Xampp for a dev server on Windows 7. It has Apache, PHP,MySQL and some other stuff all in one simple exe package for windows and works great. My version currently has PHP version 5.2.9 and the new version of Xampp comes with PHP 5.3.1 I would like to use the newer PHP but I do not want to update everything else. So how would I install the newest version of PHP in windows? Also on the Xampp page there is another extension download for Tomcat 6.0.20 I am not sure what Tomcat does can someone explain?

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• Sometimes my urls get masked with the IP address instead of the domain

  - by user64631

  I have a server with one A record that points to my IP address. I have nginx with gunicorn as a prefork which goes to my django application For most of my pages, the URL is always my domain name in the url bar. However if I go to mydomain.com/admin the url magically transforms into x.x.x.x/admin in the url bar of my browser. I thought that was weird but I ignored it figuring it only happened for admin so it wasnt that big of a deal. Then I installed django-registration. So when I go to mydomain.com/accounts/register the url is still mydomain.com/accounts/register in the url bar. but when I submit a form, the POST request goes to x.x.x.x/accounts/register which creates a cross domain error. So I decided that it wasnt isolated to the admin and I really need to fix what is going on. I have no idea what is going on and am completely lost.

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• How to disable apache mods without any problems

  - by Saif Bechan

  I have an apache installation where every single mod is enabled. I want my server to be as light as possible so I want to disable everything i do now need. What is the best way to go about this. I know its just removing the ; before the line in the conf file. But what if some hidden service somewhere need that at some random point in time. Can i get some suggestion on what to do.

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• mod_rewrite rules to run fcgi for different subdomains

  - by Anthony Hiscox

  On my shared hosting server (Hostmonster) I have django (actually pinax) setup so that a .htaccess mod_rewrite rule rewrites the request to a pinax.fcgi file: RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^(.*)$ pinax.fcgi/$1 [QSA,L] What I would like to do is have a different pinax.fcgi file get called depending on the domain used (or subdomain), something like this: RewriteCond %{HTTP_HOST} ^subdomain\.domain\.com$ [NC] RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^(.*)$ pinax2.fcgi/$1 [QSA,L] RewriteCond %{HTTP_HOST} ^domain\.com$ [NC] RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^(.*)$ pinax.fcgi/$1 [QSA,L] This is stored in a .htaccess file in my ROOT public_html folder (not in the public_html/subdomain/ folder), but unfortunately just results in internal redirect errors. How can I write these rules so that they use a different fcgi file for different domains?

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• SSL FTP fails on Windows 7 but not Windows XP clients

  - by Andrew Neely

  We currently use a free SSL-FTP client called Move-It-Freely to transmit data from a custom data entry program at over forty facilities scattered around the state to our central server. Under XP, it works flawlessly. Some facilities have upgraded to Windows 7. On these machines, uploads (transfers to us) work, downloads (transfers from us to them) fail. Replacing the Windows 7 machine with an XP machine solves the problem. We have also verified that the network firewall settings have not changed. This problem persists even if Windows firewall is not running. We were able to remote into one of the Windows 7 machines to verify that the Windows firewall was indeed turned off. We cannot replicate the problem on our own Windows 7 machines, and are at a loss of how to fix this feature for our customers. The data contain health-related information, and needs to be encrypted (hence SSL-FTP.) Despite hours spent on Google, we cannot find a solution.

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• How to configure nginx to serve static contents from RAM?

  - by Vijayendra Tripathi

  I want to set up nginx as my web server. I want to have image files cached in the memory (RAM) rather then disk. I am serving a small page and want few images always served from RAM. I dont wish to use varnish (or any other such tools) for this as I believe nginx has a capability to cache contents into RAM. I am not sure as how may I configure nginx for this? I did try few combinations but they didn't work. nginx uses disk all the time to get images. For example, when I tried apache benchmark to test with following command - ab -c 500 -n 1000 http://localhost/banner.jpg I get following error - socket: Too many open files (24) I guess this means nginx is trying to open to many files simultaneously from the disk and OS is not allowing this operation. Can anyone please suggest me a correct configuration? Thanks for considering this message.

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• Time between AWS Notifying of Scale Down and Terminating instance

  - by SteveEdson

  Here is the scenario, there are multiple EC2 instances behind a load balancer. When traffic dies down, the SCALE_DOWN policy is triggered from a CloudWatch alarm. What I would like, is for the instance that is going to be terminated, or a separate server altogether, to be able to run a quick script that will execute a few commands to ensure all data has been transferred. My initial question was going to be how can I send a notification when an instance is going to be terminated by an auto scale, SCALE_DOWN policy. But then I saw this question Amazon EC2 notifying the instance when the autoscale service terminates it. If the notification is sent, how much time is there before the instance actually gets terminated? Are there any parameters to specify this time? Would it be a better idea to notify an instance that it is no longer needed, and get the instance to terminate itself once it has finished running the final script? Or, am I making this into a bigger problem than it actually is, and theres a far simpler solution?

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