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• enable/disable ntp service on ubuntu 12.04

  - by ntphelp

  Our application runs on Ubuntu 12.04 Precise. On this server, we have both ntpdate and ntp. How to enable and disable the NTP service on-demand? I tried # sudo update-rc.d -f ntp remove/default and # sudo update-rc.d ntp enable/disable commands, but when I reboot server the ntp service starts running! I suspect ntpdate is starting ntp service on reboot. I removed ntpdate package from one of my experimental server, then ntp didn't start on reboot after issuing: # update-rc.d ntp disable Is there a way to control this? or is there way to permanently disable ntpdate?

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• Netboot Intel Macs without BSDP

  - by notpeter

  I have a netboot setup with DeployStudio that works great in my lab, but doesn't work on our main network. After some digging, I believe it's because our network admins are filtering BSDP (Boot Service Discovery Protocol) on our subnet at the switch level. Is it possible to hard code which server my clients (early 2007 iMac Core2Duos) should boot from without relying on BSDP? Perhaps relevant details: I do not have control over switch configs or DHCP settings. Client and server are running 10.6 Snow Leopard. The clients see the netboot server advertising itself in the 'Startup Disk' system preferences pane, but when I go to netboot it just leaves me with a flashing globe.

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• webmin not working on port 10000

  - by Ali

  Hi, I posted a similar question yesterday but can't seem to find that post. I have installed webmin on my server which has SSL and its service is running but I am unable to open it in browser. I thought may be the port is blocked by server's firewall so I entered port 10000 (TCP - inbound) in APF but still no luck. When I use https://localhost:10000 on server to access webmin then it works fine but not remotely. Why is such a simple thing so hard to run? Thanks

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• How can i get SSO for alfresco on windows-7 to work?

  - by Maarten

  domain AD on windows 2008 R2, linux server alfresco 3.4c, windows-7 client. I'm trying to get automatically logged into alfresco from the windows-7 client. I've looked with wireshark to see what happens: 1. Client goes to /alfresco 2. Server sends Redirect to page 3. Client goes to Redirected page 4. Server sends a WWW-Authenticate: Negotiate header 5. Client DOES NOT respond to this how can i configure the windows-7 client (or the AD domain) so that the client will in fact engage with the SPNEGO protocol? instead of just asking for user credentials? (the user is logged in through kerberos in the domain.)

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• Rsync plugin to many local wordpress installs via script or cli

  - by Nick Abbey

  I am maintaining a large number of wordpress installs on a production server, and we are looking to deploy InfiniteWP for managing these installs. I am looking for a way to script the distribution of the plugin folder to all of these installs. On server wp-prod, all sites are stored in /srv//site/ The plugin needs to be copied from ~/iws-plugin to /srv//site/wp-content/plugins/ Here's some pseudo code to explain what I need to do: array dirs = <all folders in /srv> for each d in dirs if exits "/srv/d/site/wp-content/plugins" rsync -avzh --log-file=~/d.log ~/plugin_base_folder /srv/d/site/wp-content/plugins/ else touch d.log echo 'plugin folder for "d" not found' >> ~/d.log end end I just don't know how to make it happen from the cli or via bash. I can (and will) tinker with a bash or ruby script on my test server, but I'm thinking the command-line-fu here on SF is strong enough to handle this issue much more quickly than I can hack together a solution. Thanks!

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• Virtualization deployment for datacenter

  - by bogha

  Hi, my company is going to deploy an IT Infrastructure on a virtual platform, can you please help me with the following: 1- which one do you recommend, Cisco Unified computing system ( cisco + emc + vmware )or HP Blades( virtualization solution + HP Storage )? 2- i Need to install a DNS Server, Web server, cpanel for managing hosting packages and Microsoft layer of product for usingg in the corporate infrastructur ( active directory, Local DNS, Exchange server, DHCP, Global catalog ) what is the minimum requirments for these servers ( in terms of CPU and Memory ) . 3- what is the best way to implement a redundant solution in a virtual environment. thank you

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• What is the meaning of these BIND log messages?

  - by javano

  Please clarify for me the meaning of the following BIND messages in syslog, these are from a DNS resolver. Whilst I think I understand them, I don't know what all four mean, so I think it's best if someone will clarify for me: 1. Oct 14 18:36:34 resolver1 named[14958]: lame server resolving 'arrivatn.co.uk' (in 'arrivatn.co.uk'?): 212.103.224.56#53 2. Oct 14 18:36:36 resolver1 named[14958]: unexpected RCODE (SERVFAIL) resolving '148.128.183.212.in-addr.arpa/PTR/IN': 212.183.136.42#53 4. Oct 14 18:38:49 resolver1 named[14958]: unexpected RCODE (REFUSED) resolving 'internal-server.ournetwork.com/AAAA/IN': auth.dns.server.ip#53 3. Oct 14 18:39:05 resolver1 named[14958]: client 89.187.127.110#42034: query (cache) 'image.sinajs.cn/A/IN' denied Thank you.

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• Configuring vsftpd with nginx on ubuntu

  - by arby

  I have vsftpd installed on Ubuntu 12.04LTS along with nginx, php, and sql on an Amazon ec2 instance. The web server is good to go, but I'm having trouble connecting to the FTP server. I'm not quite sure how to set the privileges or what configuration options I might be missing. By default, the location of the web root is at /usr/share/nginx/www and it is owned by root:root. The web server runs as user www-data in the group www-data. I've opened port 21 and set the passive ports in the ec2 backend and ufw firewall. In vsftpd.conf, I have: ... anonymous_enable=NO local_enable=YES local_umask=0027 chroot_local_user=YES pasv_enable=YES pas_max_port=12100 pasv_min_port=12000 port_enable=YES ... Now, I'm unsure how to create the FTP user that when I login, displays my web directory with write access. I've tried it a few different ways, but I keep running into errors (either no connection, no write access, or very slow timeouts.)

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• GDM login screen is not displayed with VNC

  - by niboshi

  Hi, I set up VNC server with xinetd. Also configured GDM so that XDMCP is enabled. VNC connection seems okay, but GDM login screen is not shown. Instead I can only see old bare X screen (gray meshed background and X-shaped mouse pointer), which I can't do any interaction with it. What can I do to fix the problem? No log is written below /var/log/. Server distribution: Ubuntu marverick /etc/xinetd.d/vnc is like below: service vnc1024 { disable = no socket_type = stream protocol = tcp wait = no user = nobody server = /usr/bin/Xvnc server_args = -inetd -query localhost -geometry 1024x768 -depth 24 -once securitytypes=none port = 12345 } /etc/gdm/custom.conf: [daemon] [security] DisallowTCP=false [xdmcp] Enable=true [gui] [greeter] [chooser] [debug] [servers] /etc/services is also configured. Thanks

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• postfix, TLS and rapidssl - "verify error:num=19:unable to get local issuer certificate"

  - by technobuddha

  I have been googeling for days! I have a cert from rapidssl. I read up that the problem with num=20, is that indicates it doesn't know the issuer, or doesn't know the ROOT Cert, right? I run this command: openssl s_client -showcerts -connect smtp.server.com:465 I get this error: verify error:num=19:self signed certificate in certificate chain Here is what i have in my postfix main.cf, and what i have done: smtpd_tls_key_file = /etc/postfix/ssl/smtp.server.com.rsa.key (this is the private key) smtpd_tls_cert_file = /etc/postfix/ssl/smtp.server.com.PUBLIC.key (this is the public key given to me by rapidssl) smtpd_tls_CAfile = /etc/postfix/ssl/combo.csr.key This key has both the intermediate keys ON TOP, and the ROOT KEY on the bottom. Here is the Intermediate keys: https://knowledge.geotrust.com/library/VERISIGN/ALL_OTHER/geotrust%20ca/GT_QuickSSL_and_Premium_and_Trial_intermediate_bundle.pem and here is the root CERT: http://www.geotrust.com/resources/root_certificates/certificates/Equifax_Secure_Certificate_Authority.cer anyone know how to use rapidssl certs?

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• FTP transfer timeouts while uploading small files

  - by Hamed Momeni

  I have this problem that when I need to transfer some files (mostly small files < 100KB) the connections time out. Well actually it uploads one file and it fails on the next until my client reconnects to the server and the same thing happens over and over again. I googled the problem and some said that switching from passive mode to active mode could solve the it but it didn't work for me. Even continuously pinging the server to keep the connection alive was to no avail. P.S. I have root access to the server. Update: I'm running ProFTPD on a CentOS vps. I tried a few clients (FireFTP, FileZilla) all having the same problem.

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• MySQL taking a long time to start

  - by Dscoduc

  I'm running Windows Server 2008 with MySQL installed and every time I reboot the server the MySQL Service doesn't start right away. A look into the Windows Eventlog shows that the MySQL Service was hung at startup. Looking at the Services.msc console shows the service state at Starting... Eventually, like 10 minutes, the MySQL Service actually finishes the startup process and the database becomes available for my Wordpress server... I looked at the MySQL .err files and didn't find anything that would indicate a delay in the statup process... Can anyone suggest a way to determine what is causing the delay, and more importantly, how to prevent the delay in the MySQL Startup?

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• php rsync with exec() not working

  - by mojeime

  Why this: rsync -avz -e ssh /home/userneme/folder [email protected]:/var/www/folder works from cronjob and this: exec("rsync -avz -e ssh /home/userneme/folder [email protected]:/var/www/folder"); doesn't work. I know exec is working because i have a few places in my appp that do convercion from pdf to jpg with ImageMagick (exec). SOLVED exec is working OK it was a permission issue on remote server. "Local" server is shared reseller account and remote server is my first VPS Ubuntu 10.10 LAMP box. If only I had a system administrator since i'm just a software developer forced to do this and i stink at it :) Thank You all!

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• How do MaxSpareServers work in Apache?

  - by John Hunt

  I've scoured the web but I can't find out what MaxSpareServers are in Apache MPM prefork.. The MaxSpareServers directive sets the desired maximum number of idle child server processes. An idle process is one which is not handling a request. If there are more than MaxSpareServers idle, then the parent process will kill off the excess processes. Great, but what causes a spareserver to be created? More importantly, when does a spare server go away? I understand that minspareservers are created gradually after the server is started.. How do maxspareservers relate to maxclients? Basically I'm at a bit of a loss on how best to configure Apache.. there's a lot of documentation out there but it isn't that clear. Thanks, John.

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• mod_access for lighttpd causes a 403 error for all POST requests

  - by Sam

  I have found on my debian server that running the lighttpd module mod_access is causing the server to response with a 403 to all POST requests. It's very odd as I have two servers, one is running as I'd expect and the other keeps returning these 403's. They are running identical configs for lighttpd and php. My lighttpd.conf is: https://gist.github.com/4269500 There is also one other custom conf: https://gist.github.com/4269508 I've opened up the servers for requests until I get this fixed, the server that works is http://mercury.isitup.org/ and the one that fails is http://venus.isitup.org/. After working out that disabling mod_access resolves the problem I greped all my lighttpd configs for uses of it (docs). Disabling each line I found didn't help, leading me to think this is perhaps some default behaviour (or bug?)... Has anyone come across this before or know what configuration value I've got wrong? Versions Debian: Debian GNU/Linux 6.0.6 (squeeze) Lighttpd: lighttpd/1.4.28 (ssl) PHP: PHP 5.3.19-1~dotdeb.0 with Suhosin-Patch (cli)

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• In TCP/IP terms, how does a download speed limiter in an office work?

  - by TessellatingHeckler

  Assume an office of people, they want to limit HTTP downloads to a max of 40% bandwidth of their internet connection speed so that it doesn't block other traffic. We say "it's not supported in your firewall", and they say the inevitable line "we used to be able to do it with our Netgear/DLink/DrayTek". Thinking about it, a download is like this: HTTP GET request Server sends file data as TCP packets Client acknowledges receipt of TCP packets Repeat until download finished. The speed is determined by how fast the server sends data to you, and how fast you acknowledge it. So, to limit download speed, you have two choices: 1) Instruct the server to send data to you more slowly - and I don't think there's any protocol feature to request that in TCP or HTTP. 2) Acknowledge packets more slowly by limiting your upload speed, and also ruin your upload speed. How do devices do this limiting? Is there a standard way?

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• error on remote connection to mysql

  - by Ahmet vardar

  Hi, I ve been trying to connect my dedicated server mysql db from my computers localhost my code is here; $dbhost = 'domain.com'; $dbuser = 'username'; $dbpass = 'pass'; $conn = mysql_connect($dbhost, $dbuser, $dbpass) or die('Could not connect: ' . mysql_error()); $dbname = 'dbname'; mysql_select_db($dbname); I get that error Could not connect: Lost connection to MySQL server at 'reading initial communication packet', system error: 61 Dedicated server is Linux centos 64 bit, php 3.2.4, mysql 5.1.54 Is there any workaround that ? Thanks

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• Virtualmin Configuration

  - by Allen

  I am trying to get Virtualmin setup and have reached a point where my noobish sysadmin skills aren't getting the job done. This is the message I get now when I try and refresh the configuration of Virtualmin. BIND DNS server is installed, and the system is configured to use it. However, the default master DNS server XXXXXX is not a fully qualified domain name. Sendmail is only accepting SMTP connections on the following ports : 127.0.0.1 port smtp. Email from other systems on the Internet will not be accepted. This can be changed in the Sendmail Mail Server module. Please advise what I need to do to get Sendmail configured properly. Thanks!

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• Exchange 2003 HTTP Account Error

  - by Ryaner

  We are trying to get one of our users connected to our Exchange 2003 server using the HTTP method as they already have an existing Exchange account on another server. The setup goes through and they appear to get connected fine however none of the subfolders are listed. Instead we get one folder of "Error-Pls file a Bug". The usual Google search just throws up nothing useful. Does anyone know how to fix this? Or has anyone actually gotten Outlook (2003 or 2007) to connect to an Exchange 2003 server?

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• wbadmin incremental system state backup

  - by user74513

  I am doing system state backups on a Windows Server 2008 R2 Enterprise (Service Pack 1) machine and expected the backups after the first one to be incremental. However with each backup a new directory with vhd files are created and the vhd files are almost the same size as the with the first backup. So the backups does not seem to be incremental. I used the following command to do the backup: wbadmin start systemstatebackup -backupTarget:f: I played around with the settings under "Configure Performance Settings" in the Windows Server Backup plugin in Server Manager but according to the description at the top of the dialog these settings are not applied to system state backups. Are there any settings available for wbadmin system state backup to make the backups incremental?

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• Lighttpd not starting - no error

  - by Furism

  I recently installed Lighttpd on Ubuntu Server 10.04 x86_64 and created several websites. What I do is include /etc/lighttpd/vhost.d/*.conf and put a configuration file for each website in that directory. The problem I have is when I "service lighttpd start" I get the message that the service started, there is no error message: root@178-33-104-210:~# service lighttpd start Syntax OK * Starting web server lighttpd [ OK ] But then if I take a look at the services listening, Lighttpd is nowhere to be seen: root@178-33-104-210:~# netstat -tap Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 localhost:mysql *:* LISTEN 829/mysqld tcp 0 0 *:ftp *:* LISTEN 737/vsftpd tcp 0 0 *:ssh *:* LISTEN 739/sshd tcp6 0 0 [::]:ssh [::]:* LISTEN 739/sshd So I'm looking at ways I could troubleshoot this. I checked in /var/log/lighttpd/error.log and there's nothing in it. Edit: Sorry, I indicated I use CentOS but it's actually Ubuntu Server (I usually use CentOS but had to go with Ubuntu for that one).

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• How to set up hosting on Heroku and email forwarders on a WHM (cPanel)?

  - by matija

  I'm using DNSimple for managing my records, hosting my site at Heroku and I want to use a Linux WHM (cPanel) for managing emails forwarding (DNSimple has that feature, but it's currently not working properly). Hosting works, but I'm having a hard time getting emails to work. Here are my (pseudo-)records: Type Name TTL Points to --------------------------------------------------------- ALIAS | mydomain.com | 3600 | mydomain.herokuapp.com CNAME | www.mydomain.com | 3600 | mydomain.herokuapp.com CNAME | mail.mydomain.com | 600 | <WHM server IP address> MX | mydomain.com | 600 | <WHM server IP address> NS | mydomain.com | 3600 | ns1.dnsimple.com ... | ... | ... | ... NS | mydomain.com | 3600 | ns4.dnsimple.com There are two more records, SOA and TXT, generated by DNSimple, but I don't think those are relevant. When I add an A-record: A | mydomain.com | 3600 | WHM server IP address and change the mail CNAME and MX records to mydomain.com, emails start working, but then the hosting doesn't work anymore. Is this possible to achieve?

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• Start tomcat webapp with root privileges

  - by Hagay Myr

  I built a webapp that uses libpcap (via jpcap). In order to be able to get the network interfaces list or to bind to a network interface, the application (in this case a webaap that runs from tomcat server) must be running with root privileges. During development I simply ran Eclipse with root privileges (sudo eclipse) and my webapp worked just fine with Eclipse's local tomcat server. However, when I try to deploy my webapp to the "real" tomcat server, it isn't working. I Also tried to start the tomcat6 service with sudo and changed the TOMCAT6_USER definition (defined in /etc/init.d/tomcat6) from "tomcat6" to "root" but it made no difference. What should I do to make it work?

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• MySQL - allow connection from remote machine as root user

  - by Senthil Kumar

  Hi all, When I installed MySQL server in Windows, there was an option "Allow root connection from remote machine". I checked that option and I had no probs when using it. I installed MySQL server in Ubuntu 9.04 using apt-get install. I can connect to the sql server from the same machine but when I try to connect from a virtual machine, it doesn't work. My guess is that I should allow root connection from remote machine. How to do that?

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• OPTIONS request vs GET in Ajax

  - by user41172

  I have a PHP/javascript app that queries and returns info using an ajax request. On every server I've used so far, this works as expected, passing an Ajax GET request to the server and returning json data. On a new install, the query fails and returns nothing-- I inspected the request and it turns out that rather than passing the query as a GET, the server is passing it as an OPTIONS request. Is there any reason for this? I have no idea why this might happen. THanks!

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