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• Recovering Data from a Linkstation LS-WXL/R1

  - by kingkool68

  I've been running a Buffalo Linkstation LS-WXL/R1 in RAID1 for a few weeks. Two nights ago we had a brief power outage. Yesterday when I tried to mount the disk it couldn't be found. I logged in to the web admin and it couldn't see any storage attached and no arrays available. Well this sucks. I ended up taking the disks out and mounting them to an Ubuntu virtual machine. They how up as an Array but I can't start the Array to the best of my limited knowledge. I could still see the 6 partitions, so I'm confident the data is there. I can use Photorec (http://www.cgsecurity.org/wiki/PhotoRec) to recover most of the files I want, it just takes some time. Could I make an image of the data partition and mount that in Ubuntu so I can get at the data I want through the file system? 95% of the data on my Linkstation LS-WXL/R1 is backup. I just put a few folders of images on there that I need to get back. I'm already preparing to format the disks when I'm done and re-building the RAID1 array from scratch. Any advice would be appreciated.

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• ntpd on Fedora Core 6 with high negative time reset values

  - by Mark White

  The basic problem is we have a FC6 server instance running on a virtual machine, and the system time seems to have been slowly varying until it is now causing a problem. The server runs 24/7 and has been up for 155 days. It has been changed to show GMT, and reports the time as (example) 00:15:15 GMT whereas the actual time is 00:00:00 GMT. This is an offset of 915 seconds. selinux has been changed to 'setenforce 0' for testing and I am running as root. I stop the ntpd service and change the time in System|Administration|Date & Time. The time still shows the same with 'date' in bash. There are no error logs. I change the date with 'date --set' in bash. The response confirms the changed date. I run 'date' and the incorrect date is shown. There are no error logs. I start the ntpd service and /var/log/messages shows success with 'time reset -915.720139s'. The date remains unchanged. ntpq -p shows three three time servers all have offsets of around -915 seconds. I stop ntpd service and try 'ntpd -gqx' and get the same result as above - success, but a large negative time reset. I've tried varying combinations of the above, and a few more settings in System|Administration|Date & Time - no change. I just need to reset the system time to GMT. No offset. But I can't wait for ntpd to slew the time over the next few weeks. Any advice is welcome, cheers! Surely this shouldn't be this difficult... Mark...

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• Any way to move Office Starter To-Go to a non-flash drive?

  - by Scott Bussinger

  Microsoft's Office Starter edition has an interesting option to create a portable version on a USB flash drive using the "Microsoft Office Starter To-Go Device Manager". This creates a portable version of the Word and Excel starter editions (limited versions of the normal applications that include ads). This would be great for use in Virtual Machines since it requires no registration and has a perpetual license. But I want to copy the files off of the flash drive and just store them in the VHD. The problem is that it appears when you try to run the office.exe executable from anywhere but the USB drive you get the error "Microsoft Office Starter To-Go cannot be launched because it is installed on an unsupported device." Any ideas what it is objecting to and is there a legal workaround for this? A limited but legal and portable version of Word and Excel is a great idea. But tying it specifically to a USB flash drive seems a bit odd. They don't seem to care how many of those flash drives you create so it's not clear what the restrictions are about.

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• Where to place Nginx IP blacklist config file?

  - by ProfessionalAmateur

  I have an Nginx web server hosting two sites. I created a blockips.conf file to blacklist IP addresses that are constantly probing the server and included this file in the nginx.conf file. However in my access logs for the sites I still see these IP addresses showing up. Do I need to include the black list in each site's conf instead of the global conf for Nginx? Here is my nginx.conf user nginx; worker_processes 1; error_log /var/log/nginx/error.log warn; pid /var/run/nginx.pid; events { worker_connections 1024; } http { include /etc/nginx/mime.types; default_type application/octet-stream; log_format main '$remote_addr - $remote_user [$time_local] "$request" ' '$status $body_bytes_sent "$http_referer" ' '"$http_user_agent" "$http_x_forwarded_for"'; access_log /var/log/nginx/access.log main; sendfile on; keepalive_timeout 65; include /etc/nginx/conf.d/*.conf; # Load virtual host configuration files. include /etc/nginx/sites-enabled/*; # BLOCK SPAMMERS IP ADDRESSES include /etc/nginx/conf.d/blockips.conf; } blockips.conf deny 58.218.199.250; access.log still shows this IP address. 58.218.199.250 - - [27/Sep/2012:06:41:03 -0600] "GET http://59.53.91.9/proxy/judge.php HTTP/1.1" 403 570 "-" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)" "-" What am I doing incorrectly?

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• Win2k8R2 / IIS 7.5 - users getting 503 response, no 503 error reported in logs

  - by merk

  I've got 2 web servers with mirrored content. There's a load balancer sitting in front of them. Starting yesterday we've been getting people complaining about 503 errors. i can't find any 503 errors in the IIS log file. However the server host is saying these errors are due to .Net errors in our website which are causing the app pool to recycle. They pointed out several errors in the windows application event log which look like this: Log Name: Application Source: ASP.NET 4.0.30319.0 Date: 3/31/2012 8:35:37 PM Event ID: 1309 Task Category: Web Event Level: Warning Keywords: Classic User: N/A Computer: 6251.local Description: Event code: 3005 Event message: An unhandled exception has occurred. Event time: 3/31/2012 8:35:37 PM Event time (UTC): 4/1/2012 1:35:37 AM Event ID: e7a580c7b38545cca3416a8595408f24 Event sequence: 97 Event occurrence: 1 Event detail code: 0 Application information: Application domain: /LM/W3SVC/2/ROOT-1-129777167518960645 Trust level: Full Application Virtual Path: / Application Path: C:\inetpub\wwwroot\mywebsite\ Machine name: 6252 Process information: Process ID: 20000 Process name: w3wp.exe Account name: IIS APPPOOL\MyAppPool In particular they are saying that the account name under Process Information indicates that the app pool is recycling. They said if the app pool were not recycle, the accountname would instead be the folder where the website files are located. I checked the app pool settings - it's set to recycle every 29 hours. And the rapid fail protection is set to the default of 5 failures in 5 minutes. But i have not seen 5 failures in the event log in that short of a time span. Can anyone help me confirm if the 503 responses are indeed being generated by the app pools recycling? Or are these errors coming from somewhere else? My guess at the time was their load balancer was the one actually returning the 503 error. But that was just a guess.

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• Very uneven CPU utilization with SQL Server 2012 on 2 processor computer with 16 cores / processor

  - by cooplarsh

  After installing SQL Server Enterprise 2012 with the Server + Cal license model, on a computer with 2 processors each with 16 cores (and no hyperthreading involved) and putting the server under extremely heavy load the 16 cores on the first processor were very underutilized, the first 4 cores on the 2nd CPU were heavily utilized, and the last 12 cores were not used at all (because of the 20 core limit for this sql server version). Total CPU utilization was displaying as around 25%. Unfortunately, the server suffered from extremely poor performance even though if the tasks were evenly distributed across the 20 cores it wouldn't have been anywhere near as bad. The Windows Server was running on a VMWare virtual image under ESX Server, but all of the CPU was allocated to the windows server. We tried changing affinity settings (e.g., allocating most cores to CPU and the others to I/O), but that didn't help solve the performance problems. Upgrading the product edition to SQL Server Enterprise Core 2012 not only allowed the SQL Server to utilize the 12 previously unused cores on the 2nd processor, but it also resulted in a much more even distribution of tasks across all of the processors. To get through the backlog of requests cpU utilization jumped to around 90%, and then came down to around 33% once it was caught up, but performance improved dramatically since we failed over to the newly updated version And the performance issues went away. I was wondering if anyone knows what might cause SQL Server to unevenly distribute the load, relying almost exclusively on the first 4 cores of the 2nd processor that had 12 cores idle, and allocate only a few tasks to each of the 16 cores on the first processor. Also, is there any way we could have more evenly distributed the load across the 20 cores that were being used without the product edition upgrade? The flip side of that question is what did the product upgrade do that caused SQL Server to start evenly distributing the load across all of the cores that it recognized? Thanks to any insight to answer these questions and/or links that might help me better understand how to make sense of what was happenings.

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• Trying to setup catchall mail forwarding on my rackspace's cloudspace server

  - by bob_cobb

  I'm running Ubuntu 12 Precise Pangolin and am trying to configure my server to catchall mail sent to it and forward it to my gmail address. I've been trying lots of examples online like editing my main.cf file which looks like this: smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) biff = no # appending .domain is the MUA's job. append_dot_mydomain = no # Uncomment the next line to generate "delayed mail" warnings #delay_warning_time = 4h readme_directory = no # TLS parameters smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key smtpd_use_tls=yes smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache # See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for # information on enabling SSL in the smtp client. myhostname = destiny alias_maps = hash:/etc/aliases alias_database = hash:/etc/aliases myorigin = /etc/mailname mydestination = destiny, localhost.localdomain, localhost relayhost = smtp.sendgrid.net mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 mailbox_size_limit = 51200000 recipient_delimiter = + inet_interfaces = all inet_protocols = all In my /etc/postfix/virtual I have: @mydomain.com [email protected] @myotherdomain.com [email protected] Which isn't working when I email [email protected] or [email protected]. So I got the recommendation to add the following to my /etc/alias: postmaster:root root:[email protected] restarted postfix, and tried emailing [email protected] or [email protected] but it still won't send. Does anyone have any idea what I'm doing wrong here? I'd appreciate any help.

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• Where to get grub files without using grub-install

  - by Jacky

  I am in a particular situation. I have a MacBook Pro with no internal CD drive and both MacOS X (minimal setup) and Linux (my main system) is installed. During a cross-upgrade to Ubuntu 12.04 I messed up grub, so that my /boot/grub directory is basically empty. This means I can't boot Linux on the laptop anymore but only get into grub rescue. Normally this is no issue as you'd just boot from a rescue CD or USB stick, but unfortunately with a MacBook Pro this is not possible (I have reFIT installed and it attempts to boot, but it fails and the manual says that Apple's EFI firmware is not able to handle this situation). From MacOS X, however, I still have write access to the Linux partition. I've now been trying to figure out how to populate the /boot/grub folder with the necessary files, to no avail so far. The ISO image of Ubuntu 12.04 contains an EFI folder which is not what I am looking for, instead I need the normal.mod files for the grub version of Ubuntu 12.04. I do not have any other machine to set up a virtual machine of Ubuntu 12.04 to extract this from after a grub-install, so I am asking for ideas here how to solve this mess. P.S.: I installed the Linux previously when I still had a working internal CD drive. This is gone now.

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• Map FTP folder to folder on different FTP server

  - by jolt

  In my team we work a lot with FTP. We upload and download files from several different servers daily. Currently every member of the team manages access credentials to each FTP server locally on their own machine. I am looking for a way to set up a central FTP server that we can connect to, and from there, navigate to folders that each represent one of the other FTP servers that we connect to daily. Something like this: In-house central FTP server: |- FolderA --> server A root folder |- FolderB --> server B root folder |- FolderC --> server C root folder A setup like this, would mean that we can manage access credentials on the central FTP server, and team members would only need to have the access credentials to the central FTP server, and from there they could navigate to the other servers through these "virtual" folders. We could potentially develop our own custom FTP server that just forward requests to the remote FTP servers, but i feel like something like this (or something similar) would already have been done. So I'm looking for pointers that could help us find software for Windows that could help us to simplify our current setup. Thank you! Similar (unanswered) question here: FTP management server

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• Nginx Not Passing URL Parameters

  - by jmccartie

  Messing around with Nginx ... for some reason, it looks like none of my URL parameters are being passed. My homepage loads fine, but a URL like "http://mysite.com/more.php?id=101" throws errors, saying that the ID is an undefined index. I'm assuming this is something basic I'm missing in a conf file. Some info: conf.d/virtual.conf server { listen 80; server_name dev.mysite.com; index index.php; root /var/www/dev.mysite.com_html; location / { root /var/www/dev.mysite.com_html; } location ~ \.php(.*)$ { fastcgi_pass 127.0.0.1:9000; fastcgi_param SCRIPT_FILENAME /var/www/wap/dev.mysite.com_html/$fastcgi_script_n ame; fastcgi_index index.php; include /etc/nginx/fastcgi_params; } } Error log: 2009/06/22 11:44:21 [notice] 16319#0: start worker process 16322 2009/06/22 11:44:28 [error] 16320#0: *1 FastCGI sent in stderr: "PHP Notice: Undefined index: id in /var/www/dev.mysite.com_html/more.php on line 10 Thanks in advance.

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• Use Mac OS X Server As Development Environment

  - by macinjosh

  I've installed Mac OS X Server 10.6.3 on my laptop to use as my normal OS. I do a lot of web development and thought it would be handy to run OS X Server so I could more easily manage my local development environment (Apache Virtual Hosts, Hostnames for each local site, etc). I'm really enjoying the new setup except for one problem. DNS. My ideal situation would be to add a site (some-site.local) in the Web Service and then go to the DNS Service and add a primary record for the new site. I actually got this working at one point but after a reboot it stopped working! The records look the same as they did before the reboot but the site doesn't come up in Safari. Here is a list of my needs: Need to be able to add new domains at a whim Domains always map to a site on the same box's Web Service Local & External IPs often change It would nice if it worked on any network (i.e. WiFi at the airport or coffee shop) Sites only need to be accessible locally Configuration should stay put even after rebooting I've done some googling and used this as a bit of guide. In the past I've used MAMP and then just a local Apache/PHP/MySQL install with a manually managed hosts file. I'd rather not go back.

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• Dell PERC 5 - RAID-10 keeps rebuilding drive 2 every day

  - by raid question

  I have a Dell PowerEdge 2950 with this card: RAID bus controller [0104]: Dell PowerEdge Expandable RAID controller 5 [1028:0015] and six disks in a RAID-10. I replaced drive 2, because it didn't show up, and then it started to rebuild itself: root@backup01:~# megaraidsas-status -- Arrays informations -- -- ID | Type | Size | Status a0d0 | RAID 10 | 5587GiB | DEGRADED -- Disks informations -- ID | Model | Status | Warnings a0e8s0 | ATA ST2000DM001-9YN1 1863GiB | online | errs: media:0 other:5393 a0e8s1 | ATA ST2000DM001-9YN1 1863GiB | online | errs: media:0 other:5394 a0e8s2 | ATA ST2000DM001-1E61 1863GiB | rebuild | errs: media:0 other:99 a0e8s3 | ATA ST2000DM001-9YN1 1863GiB | online | errs: media:0 other:5393 a0e8s4 | ATA ST2000DM001-9YN1 1863GiB | online | errs: media:0 other:5393 a0e8s5 | ATA ST2000DM001-9YN1 1863GiB | online | errs: media:0 other:5393 The rebuild finishes, then the virtual drive becomes optimal, and drive 2 goes online. Then once a day, drive 2 acts like it's been removed, and the rebuild starts all over again. How do I make this once a day rebuild stop? Event Description: Removed: PD 02(e1/s2) Event Description: Removed: PD 02(e1/s2) Info: enclPd=08, scsiType=0, portMap=04, sasAddr=1221000002000000,0000000000000000 Event Description: State change on VD 00/0 from OPTIMAL(3) to DEGRADED(2) Event Description: VD 00/0 is now DEGRADED1 Event Description: State change on PD 02(e1/s2) from ONLINE(18) to FAILED(11) Event Description: State change on PD 02(e1/s2) from FAILED(11) to UNCONFIGURED_BAD(1) Event Description: Background Initialization failed on VD 00/0 Event Description: Inserted: PD 02(e1/s2) Event Description: Inserted: PD 02(e1/s2) Info: enclPd=08, scsiType=0, portMap=04, sasAddr=1221000002000000,0000000000000000 Event Description: PD 02(e1/s2) is not a certified drive Event Description: State change on PD 02(e1/s2) Event Description: State change on PD 02(e1/s2) from UNCONFIGURED_GOOD(0) to OFFLINE(10) from UNCONFIGURED_BAD(1) to UNCONFIGURED_GOOD(0) Event Description: Rebuild automatically started on PD 02(e1/s2) Event Description: State change on PD 02(e1/s2) from OFFLINE(10) to REBUILD(14)

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• Deleted vmware ESXi snapshot file - any way to recover?

  - by Mark Allison

  Hi there, I wanted to make some changes to a file server VM today on ESXi 4. The machine is a Debian Lenny guest with two virtual disks - one is 8GB and the other is 500Gb (data). In order to protect the machine from unwanted changes, I made a snapshot of the machine. I went ahead and made my changes and it didn't work out well. So, I powered off the VM and went into snapshot manager and reverted to snapshot. However I reverted to an older snapshot and not the one I just made by mistake. I then (idiotically) deleted the snapshot I just made in snapshot manager. This has resulted in me losing about one year's worth of data. Is there any way to recover this deleted snapshot file? I'm using vmware esxi 4. When I browse the VMWare repository I can see various vmdk files - is it possible the data I need is still there? What should I look for? Thanks, Mark.

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• Trouble with IIS SMTP relaying to Gmail

  - by saille

  I appreciate that similar questions have been asked about how to setup SMTP relaying with IIS's virtual SMTP server. However I'm still completely stumped on this problem. Here's the setup: IIS 6.0 SMTP server running on Win2k3 box with a NAT'ed IP. Company uses Gmail for all email services. An app on the box needs to send email, so normally we'd just set the app up to talk to smtp.gmail.com directly, but this app doesn't support TLS. Easy, we just setup a local SMTP relay right? So I thought. What we have done so far: Setup IIS SMTP server to relay to smtp.gmail.com, as per these excellent instructions: http://fmuntean.wordpress.com/2008/10/26/how-to-configure-iis-smtp-server-to-forward-emails-using-a-gmail-account/ The local SMTP relay allows anonymous access. Both the local IP and the loopback IP have been explicitly allowed in the Connection and Relay dialogs. Tried sending email from 2 different apps via the local SMTP server, but failed (the emails end up in the Queue folder, but never get sent). The IIS logs show the conversation with the local app, but zero conversation happening with smtp.gmail.com. The port used by gmail is open outbound, and indeed the apps we have that support TLS can send email directly via smtp.gmail.com, so there is no problem with the network. At this point I changed the smtp settings in IIS SMTP server to use a different external SMTP server and hey-presto, the local apps can send email via local IIS SMTP relay. So smtp.gmail.com fails to work with our IIS SMTP relay, but another 3rd party SMTP service works fine. We need to use smtp.gmail.com, so how to troubleshoot this one?

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• ADO 2.8, VMWare and SQL Server - sudden bulk dropped connections

  - by CodeByMoonlight

  We have an overworked server currently running a single SQL Server 2000 instance on physical hardware, and about 40 different apps interact with it on a daily basis. Last year, the RAID controller failed and we had no spare, so IT Support hurriedly migrated it overnight to a copy running on a VMWare Server. While it was on that server everything ran much quicker due to it being a big improvement in spec. However, the biggest app using it had occasional serious errors which never occurred on physical hardware. Specifically, several times a week it would disconnect batches of users - anywhere from just ten to hundreds at once, and all at the same time. It didn't affect any particular users or PCs or offices - all were affected equally. The only common thing was the app, which is a VB6 app using ADO 2.8 to connect. The other apps connecting to that virtualised instance of SQL Server seemingly had no problems, although they were (and are) responsible for only a tiny fraction of the work involving this server. The upshot is that after about two weeks of loving the speed and hating the random mass disconnections (which we were never able to find a cause for), we sadly took the decision to return to physical hardware and the disconnections vanished. Now we've reached the point where the old server just can't handle all that's being asked of it, and we're intending to migrate everything to 2 or more other servers. The snag is that there's a good chance they'll have to be virtual ones again. Given what happened last time, I'm trying to find out what possible reasons there could be for these mass disconnections. We were running VMWare ESX, but the network is Novell-based. Also, the server had a linked server setup to connect to an Informix server using a known-to-be-buggy ODBC driver, and this is used throughout the day. Any ideas on the cause(s)?

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• Load Sharing Regarding Large Websites

  - by JHarley1

  Hello, I have a question regarding Load Sharing for large websites. My Understanding: So if you have a website that has millions of fits a day you will need to have an architecture that can support this sort of pressure. You can either do one or two things: Invest in a single large server that has huge amounts of processing power, memory and storage (such as Microsoft's TerraServer). Spread the load of your website across a number of machines. Let me tackle the second approach, so you have a collection of machines all running Web Server Software and all having access to identical copies of the websites pages. You can either spread the load across these machines using a cyclic pattern in a DNS or you can use a Load Ballancing Switch. The advantages of this approach is: - Redundancy - servers can fail and the others would "pick up the slack" - Incremental - the ability to easily add new machines to this set-up. My Question's Is there a Virtual approach to this issue of load balancing now? If the website runs from a database - is there still only a single copy of the database? If a user had a session running on one Server (e.g. they had gone to www.example.org and had been assigned to Server 2 - were they had created a session) if they refreshed the website (and were allocated Server 3) would they still have their session? What are the other disadvantages associated with Load Balancing? Many Thanks, J

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• Virtualhost setup for Ruby on Rails application (mod passenger)

  - by Ingo86

  Hi all, I'm trying to install Redmine under apache. The apache server works on a local network. My apache setup consist on a single virtual host. I can get insto different directories using simply the path corresponding: http://ip_address/folder_of_the_project_1 How can I setup the virtualhost to make redmine works in this situation? Here is my current virtualhost setup: NameVirtualHost * <VirtualHost *> ServerAdmin webmaster@localhost DocumentRoot /var/www/ RailsBaseURI /redmine <Directory /> Options FollowSymLinks AllowOverride None </Directory> <Directory /var/www/> Options FollowSymLinks MultiViews AllowOverride None Order allow,deny allow from all </Directory> <Directory /var/www/redmine/public> Options FollowSymLinks AllowOverride None Order allow,deny Allow from all </Directory> ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/ <Directory "/usr/lib/cgi-bin"> AllowOverride None Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch Order allow,deny Allow from all </Directory> ErrorLog /var/log/apache2/error.log # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel warn CustomLog /var/log/apache2/access.log combined ServerSignature On Alias /doc/ "/usr/share/doc/" <Directory "/usr/share/doc/"> Options Indexes MultiViews FollowSymLinks AllowOverride None Order deny,allow Deny from all Allow from 127.0.0.0/255.0.0.0 ::1/128 </Directory> Thank you, Ingo86

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• What is stopping postfix from delivering mail to the local transport agent?

  - by Dark Star1

  I have the following settings ( as grabbed from my postconf -n output) alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases append_dot_mydomain = no biff = no broken_sasl_auth_clients = yes config_directory = /etc/postfix content_filter = smtp-amavis:[127.0.0.1]:10024 inet_interfaces = all mailbox_command = procmail -a "$EXTENSION" mailbox_size_limit = 0 maximal_backoff_time = 8000s maximal_queue_lifetime = 7d minimal_backoff_time = 1000s mydestination = $mydomain, localhost.$mydomain, localhost myhostname = //redacted mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 myorigin = /etc/mailname readme_directory = no recipient_delimiter = + relayhost = smtp_helo_timeout = 60s smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) smtpd_hard_error_limit = 12 smtpd_recipient_limit = 10 smtpd_sasl_auth_enable = yes smtpd_sasl_authenticated_header = yes smtpd_sasl_local_domain = smtpd_sasl_path = private/auth smtpd_sasl_security_options = noanonymous smtpd_sasl_type = dovecot smtpd_soft_error_limit = 3 smtpd_tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem smtpd_tls_key_file = /etc/ssl/private/ssl-cert-snakeoil.key smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtpd_use_tls = yes unknown_local_recipient_reject_code = 450 virtual_alias_maps = mysql:/etc/postfix/mysql_virtual_alias_maps.cf, mysql:/etc/postfix/mysql_virtual_alias_domainaliases_maps.cf virtual_gid_maps = static:8 virtual_mailbox_base = /var/vmail virtual_mailbox_domains = mysql:/etc/postfix/mysql_virtual_domains_maps.cf virtual_mailbox_maps = mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf, mysql:/etc/postfix/mysql_virtual_mailbox_domainaliases_maps.cf virtual_transport = virtual virtual_uid_maps = static:5000 postconf: warning: /etc/postfix/main.cf: unused parameter: virtual_overquota_bounce=yes postconf: warning: /etc/postfix/main.cf: unused parameter: virtual_mailbox_limit_maps=mysql:/etc/postfix/mysql_virtual_mailbox_limit_maps.cf postconf: warning: /etc/postfix/main.cf: unused parameter: virtual_maildir_limit_message=Sorry, the your maildir has overdrawn your diskspace quota, please free up some of spaces of your mailbox try again. postconf: warning: /etc/postfix/main.cf: unused parameter: virtual_create_maildirsize=yes postconf: warning: /etc/postfix/main.cf: unused parameter: virtual_mailbox_extended=yes postconf: warning: /etc/postfix/main.cf: unused parameter: virtual_mailbox_limit_override=yes postconf: warning: /etc/postfix/main.cf: unused parameter: smtpd_relay_restrictions=reject_unauth_pipelining, permit_mynetworks, permit_sasl_authenticated, reject_non_fqdn_recipient, reject_unauth_destination, check_policy_service inet:127.0.0.1:10023, permit I am nwe to mail server configurations but as I understand it from this message: status=deferred (mail transport unavailable) It means it can't deliver to the LDA. I am using postifx 2.9.6 on ubuntu 12.04 with dovecot 2.0.19

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• when i try to access website without www. i get access denied.

  - by madphp

  I have an apache web server on a debian machine. Im using virtualmin to administer virtual hosts. I have two sites on this server right now, when i try to access one site without the www in the URL i get an access denied. The other site is fine. The site with the problem is a cakephp app and has the following .htaccess file in the public_html folder. <IfModule mod_rewrite.c> RewriteEngine on RewriteRule ^$ app/webroot/ [L] RewriteRule (.*) app/webroot/$1 [L] </IfModule> Below is the directives for the problem domain. SuexecUserGroup "#1001" "#1001" ServerName mydomain.net ServerAlias www.mydomain.net ServerAlias webmail.mydomain.net ServerAlias admin.mydomain.net DocumentRoot /home/mydomain/public_html ErrorLog /var/log/virtualmin/mydomain.net_error_log CustomLog /var/log/virtualmin/mydomain.net_access_log combined ScriptAlias /cgi-bin/ /home/mydomain/cgi-bin/ ScriptAlias /awstats/ /home/mydomain/cgi-bin/ DirectoryIndex index.html index.htm index.php index.php4 index.php5 <Directory /home/mydomain/public_html> Options -Indexes +IncludesNOEXEC +FollowSymLinks +ExecCGI allow from all AllowOverride All AddHandler fcgid-script .php AddHandler fcgid-script .php5 FCGIWrapper /home/mydomain/fcgi-bin/php5.fcgi .php FCGIWrapper /home/mydomain/fcgi-bin/php5.fcgi .php5 </Directory> <Directory /home/mydomain/cgi-bin> allow from all </Directory> RewriteEngine on RewriteCond %{HTTP_HOST} =webmail.mydomain.net RewriteRule ^(.*) https://mydomain.net:20000/ [R] RewriteCond %{HTTP_HOST} =admin.mydomain.net RewriteRule ^(.*) https://mydomain.net:10000/ [R] RemoveHandler .php RemoveHandler .php5 IPCCommTimeout 31 <Files awstats.pl> AuthName "mydomain.net statistics" AuthType Basic AuthUserFile /home/mydomain/.awstats-htpasswd require valid-user </Files>

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• Cisco Catalyst 4500 Policy Based Routing

  - by Logan

  In order to test a new firewall I just set up I'm trying to implement policy based routing on our core switch. I want traffic from certain vlans to be routed to the new firewall while everything else continues being routed through the old firewall. I was trying to use this guide. Everything from that guide works fine except trying to run the "ip policy route-map" command in the interface configuration mode. IOS is telling me that such a command doesn't exist. A "show ip interface vlan" command says that policy routing is disabled. Any ideas? Output of "show ver": Cisco IOS Software, Catalyst 4500 L3 Switch Software (cat4500-IPBASEK9-M), Version 12.2(53)SG, RELEASE SOFTWARE (fc3) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2009 by Cisco Systems, Inc. Compiled Thu 16-Jul-09 19:49 by prod_rel_team Image text-base: 0x10000000, data-base: 0x11D1E3CC ROM: 12.2(31r)SG2 Dagobah Revision 226, Swamp Revision 34 RTTMCB2223-1 uptime is 3 years, 22 weeks, 2 days, 19 hours, 28 minutes Uptime for this control processor is 51 weeks, 2 days, 18 hours, 2 minutes System returned to ROM by power-on System restarted at 19:22:02 UTC Tue Jul 12 2011 System image file is "bootflash:cat4500-ipbasek9-mz.122-53.sg.bin" ... cisco WS-C4510R (MPC8245) processor (revision 4) with 524288K bytes of memory. Processor board ID FOX103703W3 MPC8245 CPU at 400Mhz, Supervisor V Last reset from PowerUp 42 Virtual Ethernet interfaces 244 Gigabit Ethernet interfaces 511K bytes of non-volatile configuration memory. Configuration register is 0x2

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• Struggling to set-up NLB cluster

  - by Chris W

  I'm trying to set up NLB on a couple of Windows 2008 R2 virtual servers running on top of Hyper V R2. The servers each have a single vNIC for LAN access (and a second vNIC for SAN access). I'm setting up the cluster to use Multicast mode. The vNICs are each set to allow MAC spoofing. Essentially I'm finding that i can add SERVER1 as a host and it will pick up and respond to the cluster IP from a remote subnet. If I then 'stop' the node in NLB manager it still responds when I would expect it to stop answering on that IP. If I recreate the cluster and add SERVER2 as the first host, the wizard completes correctly and an IPCONFIG on the server shows that it now has the cluster IP but I can't ping the cluster IP from a remote subnet but I can from another machine on the same subnet. As a final test - with both servers in the cluster, pinging from another machine on the same subnet I still get a response from the cluster IP when both nodes are stopped according to the NLB manager. The two VMs are sat on the same physical blade and are built up exactly the same as they'll be used as SharePoint web front end servers. I'm at a loss as to what could be wrong with the second VM that prevents it taking on the address just as the sole node in the cluster, never mind the strange behaviour of the cluster when I stop/start nodes.

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• /etc/security/limits.conf for setting program limits in Linux

  - by Flavius Akerele

  I have the following inside /etc/security/limits.conf (I have specified root separately because * will not include it.) user2 - core unlimited * - core 0 root - core 0 * - rss 512000 root - rss 512000 * - nproc 100 root - nproc 100 * - maxlogins 1 root - maxlogins 1 I run a program as user2 (./programname) but /proc/3498/limits says cores are disabled: Limit Soft Limit Hard Limit Units Max cpu time unlimited unlimited seconds Max file size unlimited unlimited bytes Max data size unlimited unlimited bytes Max stack size 8388608 unlimited bytes Max core file size 0 0 bytes Max resident set 524288000 524288000 bytes Max processes 100 100 processes Max open files 1024 1024 files Max locked memory 65536 65536 bytes Max address space unlimited unlimited bytes Max file locks unlimited unlimited locks Max pending signals 14001 14001 signals Max msgqueue size 819200 819200 bytes Max nice priority 0 0 Max realtime priority 0 0 Max realtime timeout unlimited unlimited us Both ulimit -Sa and ulimit -Ha output that cores are disabled: core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 14001 max locked memory (kbytes, -l) 64 max memory size (kbytes, -m) 512000 open files (-n) 1024 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) unlimited cpu time (seconds, -t) unlimited max user processes (-u) 100 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited Why are cores disabled ?

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• How to remap IPs visible from local machine to IPs visible from a machine I have SSH access to?

  - by gooli

  I'm so far out of my depth I don't even know what to google for. There's a server I can connect to via SSH. Via that server I can access other server on its subnet via SSH. What I want to do is be able to access the machines that server has access to directly. Say the server IP is 192.168.7.7 and is the only one in the 192.168.x.x range I have access to. I'd like to configure things in such a way that when I to access say 192.168.7.100 on my machine, the connection will go through an SSH tunnel I open to 192.168.7.7 and out to 192.168.7.100. I would like this to work for any port if at all possible. I know I can set an HTTP proxy and even a SOCKS proxy, but I'm wondering is there is a way to actually remap some of the IP my machine sees to IP only visible from the remote machine. What would this configuration be called? IS this NAT, VPN, IP2IP or something else? How can I set up this on a Windows client box that connects via SSH to a Linux box? Sounds to me like I need to set up some kind of filtering on the network driver or possibly a virtual NIC, but I'm not sure where to go next.

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• nxclient crashes when trying to open a terminal from a remote client through "ssh -Y"

  - by user167328

  I support around 150 linux machines. I have 2 virtual machines on an ESXi server which I access via nxmachine v3 from a windows 7 box. These machines run CentOS5 with KDE and Lubuntu12.04.1 and they are the admin GUIs from which I support the 150 machines. The linux machines which I manage are redhat4/5, CentOS5 and ubuntu 10 and 12. Normally I contact the machines via ssh -Y. Today I did an ssh -Y to a remote machine which is running Ubuntu 12.10 and ssh 6.0p1. Then I tried to open an lxterminal on the remote machine which should display on my KDE desktop. This immediately and reproducably crashed my nxclient session. I tried again from my lubuntu system with the same effect. I have not observed the phenomenon from other machines yet. The message log on my KDE host shows: Unexpected termination of nxagent because of signal: 11 Logger::log nxnode 3920 Googling for this revealed no usable answer. Does anybody have a clue what is going on here or can give a hint how to solve the issue? Add On: I asked the user at the remote machine to export his DISPLAY to my host and open an lxterminal. This worked without problems i. e. the nxclient did not crash. Then the user tried to send me xeyes and this also killed the nxclient with the same error message found in the message log as above. This makes me suspect that the problem is not solely connected to ssh but maybe to some library stuff.

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• Where is my CPU usage going?

  - by Josh

  My Ubuntu 10.04 Lucid virtual machine is saying it's at 100% CPU usage... but all I'm running is Thunderbird. According to top, CPU usage should be ~25.9%... How do I interpret this conflicting output from top? top - 13:55:26 up 3:35, 4 users, load average: 3.03, 2.59, 2.48 Tasks: 178 total, 1 running, 177 sleeping, 0 stopped, 0 zombie Cpu(s): 16.0%us, 79.7%sy, 0.0%ni, 0.0%id, 0.0%wa, 1.3%hi, 3.0%si, 0.0%st Mem: 509364k total, 479108k used, 30256k free, 3092k buffers Swap: 2096440k total, 58380k used, 2038060k free, 225116k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 7708 jnet 20 0 480m 109m 17m S 18.4 22.1 21:59.14 thunderbird-bin 4615 jnet 20 0 5488 1268 1040 S 2.3 0.2 5:00.03 nx-rootless-ses 7124 jnet 20 0 56688 27m 4812 S 2.0 5.5 6:35.09 nxagent 6724 nx 20 0 9628 1400 636 S 1.6 0.3 3:26.59 sshd 30106 root 20 0 2544 1236 908 R 0.7 0.2 0:00.33 top 19 root 20 0 0 0 0 S 0.3 0.0 0:22.45 ata/0 38 root 20 0 0 0 0 S 0.3 0.0 0:05.53 scsi_eh_1 345 root 20 0 0 0 0 S 0.3 0.0 0:04.72 kjournald 1719 root 20 0 3260 1192 944 S 0.3 0.2 0:17.36 vmware-guestd 1 root 20 0 2804 1356 940 S 0.0 0.3 0:01.99 init 2 root 20 0 0 0 0 S 0.0 0.0 0:00.01 kthreadd 3 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/0 4 root 20 0 0 0 0 S 0.0 0.0 0:00.15 ksoftirqd/0 5 root RT 0 0 0 0 S 0.0 0.0 0:00.00 watchdog/0 ... Specifically I'm referring to the fact that the CPU usage totals show 0% idle time: Cpu(s): 16.0%us, 79.7%sy, 0.0%ni, 0.0%id, 0.0%wa, 1.3%hi, 3.0%si, 0.0%st Yet when adding up the percentages in the %CPU column I get 25.9%, not 100%!

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