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file system that allow to specify different RAID level per directory and change it afterward

- by Adam Ryczkowski

I have 5 hard drives, where I want to keep my data. Some of my files are more important, and some of them are less. So some of them I wish to put on RAID-6, and for some it RAID-5 is sufficient. It is difficult to predict at the moment of creation of the arrays how much space of each type to declare. What I would do if I didn't hear about zfs, is partition the hard drives into identical 100GB partitions, and as my needs grow, assemble those partitions into md devices using linux-raid. Then, I'd combine those devices using lvm into logical volumes where I'd put my data. So when I'd need more space of e.g. RAID-6, I'd take 100GB partition from each hard drive and assemble them into another RAID-6 md device and would use it as physical storage for the logical volume group dedicated for RAID-6 data. Then I could grow the file system on this logical volume. On top of RAID-6 and RAID-5 Volume Groups (managed by lvm) would reside completely independent file systems, which I'd later merge with multiple mount --bind into a single directory structure that would reflect the logical structure of data rather that of the storage. But now, when I heard about the ZFS with all the performance, data-healing and compression capabilities I cannot stop thinking if it can help me. If so, what do you think would be the best setup?

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OpenVPN server will not redirect traffic

- by skerit

I set up an OpenVPN server on my VPS, using this guide: http://vpsnoc.com/blog/how-to-install-openvpn-on-a-debianubuntu-vps-instantly/ And I can connect to it without problems. Connect, that is, because no traffic is being redirected. When I try to load a webpage when connected to the vpn I just get an error. This is the config file it generated: dev tun server 10.8.0.0 255.255.255.0 ifconfig-pool-persist ipp.txt ca ca.crt cert server.crt key server.key dh dh1024.pem push "route 10.8.0.0 255.255.255.0" push "redirect-gateway" comp-lzo keepalive 10 60 ping-timer-rem persist-tun persist-key group daemon daemon This is my iptables.conf # Generated by iptables-save v1.4.4 on Sat May 7 13:09:44 2011 *raw :PREROUTING ACCEPT [37938267:10998335127] :OUTPUT ACCEPT [35616847:14165347907] COMMIT # Completed on Sat May 7 13:09:44 2011 # Generated by iptables-save v1.4.4 on Sat May 7 13:09:44 2011 *nat :PREROUTING ACCEPT [794948:91051460] :POSTROUTING ACCEPT [1603974:108147033] :OUTPUT ACCEPT [1603974:108147033] -A POSTROUTING -s 10.8.0.0/24 -o eth0 -j MASQUERADE -A POSTROUTING -s 10.8.0.0/24 -o eth1 -j MASQUERADE -A POSTROUTING -s 10.8.0.0/24 -o venet0 -j MASQUERADE COMMIT # Completed on Sat May 7 13:09:44 2011 # Generated by iptables-save v1.4.4 on Sat May 7 13:09:44 2011 *mangle :PREROUTING ACCEPT [37938267:10998335127] :INPUT ACCEPT [37677226:10960834925] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [35616847:14165347907] :POSTROUTING ACCEPT [35680187:14169930490] COMMIT # Completed on Sat May 7 13:09:44 2011 # Generated by iptables-save v1.4.4 on Sat May 7 13:09:44 2011 *filter :INPUT ACCEPT [37677226:10960834925] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [35616848:14165347947] -A INPUT -i eth0 -j LOG --log-prefix "BANDWIDTH_IN:" --log-level 7 -A FORWARD -o eth0 -j LOG --log-prefix "BANDWIDTH_OUT:" --log-level 7 -A FORWARD -i eth0 -j LOG --log-prefix "BANDWIDTH_IN:" --log-level 7 -A OUTPUT -o eth0 -j LOG --log-prefix "BANDWIDTH_OUT:" --log-level 7 COMMIT # Completed on Sat May 7 13:09:44 2011

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Can sendmail be configured to discard routed email that has been rejected by the next hop?

- by Guy Bolton King

Background: We have a handful of hosts (running sendmail) acting as the MXs for a few domains each. Each domain is handled via the sendmail/cf /etc/mail/virtusertable, with a set of known recipients and a catch-all reject rule. Mail to postmaster on each host is aliased to root, and root is aliased to root+<host>@ourdomain.com. The MX for ourdomain.com is Google Apps, and [email protected] is a simple group that forwards to the admins. Google Apps will reject some emails at the SMTP stage, usually because of illegal attachments (instead of accepting them and filing them as spam). Problem: Given a particular spam email sent to a domain in a virtusertable entry: If the recipient address rejects the mail, then sendmail will try and send a DSN to the sender. If that sender also rejects the mail (because it's a falsified sender, and the MX for the sender rejects the mail as spam), then sendmail sends a DSN to the postmaster. The routing detailed above takes place, and...Google Apps rejects the mail as well. sendmail now gives up with a "savemail panic", and leaves the mail in the queue forever. Our mail queue fills up with garbage Is there any way I can get sendmail to discard messages that have been rejected by the next virtusertable hop (i.e. after step 1 in the Problem description)? Or does anyone have any other solutions to this?

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Extending partition on linux gparted but not more space in the vm

- by Asken

I have a vm test installation of a linux running a build server. Unfortunately I just pressed ok when adding the disk and ended up with an 8gb drive to play with. Well into the test the builds are consuming more and more space, of course. The vm drive was resized to 21gb and using gparted I expanded the drive partitions and that all worked fine but when I go back into the console and do df there's still only 8gb available. How can I claim the other 13gb I added? fdisk -l Disk /dev/sda: 21.0 GB, 20971520000 bytes 255 heads, 63 sectors/track, 2549 cylinders, total 40960000 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0006d284 Device Boot Start End Blocks Id System /dev/sda1 * 2048 499711 248832 83 Linux /dev/sda2 501758 40959999 20229121 5 Extended /dev/sda5 501760 40959999 20229120 8e Linux LVM vgdisplay --- Volume group --- VG Name ct System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 4 VG Access read/write VG Status resizable MAX LV 0 Cur LV 2 Open LV 2 Max PV 0 Cur PV 1 Act PV 1 VG Size 19.29 GiB PE Size 4.00 MiB Total PE 4938 Alloc PE / Size 1977 / 7.72 GiB Free PE / Size 2961 / 11.57 GiB VG UUID MwiMAz-52e1-iGVf-eL4f-P5lq-FvRA-L73Sl3 lvdisplay --- Logical volume --- LV Name /dev/ct/root VG Name ct LV UUID Rfk9fh-kqdM-q7t5-ml6i-EjE8-nMtU-usBF0m LV Write Access read/write LV Status available # open 1 LV Size 5.73 GiB Current LE 1466 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 252:0 --- Logical volume --- LV Name /dev/ct/swap_1 VG Name ct LV UUID BLFaa6-1f5T-4MM0-5goV-1aur-nzl9-sNLXIs LV Write Access read/write LV Status available # open 2 LV Size 2.00 GiB Current LE 511 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 252:1

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windows: force user to use specific network adapter

- by Chad

I'm looking for a configuration/hack to force a particular application or all traffic from a particular user to use a specific NIC. I have an legacy client/server app that has a "security feature" that limits connections based on IP address. I'm trying to find a way to migrate this app to a terminal server environment. The simple solution is for the development team to update the code in the application, however in this case that's not an option. I was thinking I might be able to install VMware NIC's installed for each user on the terminal server and do some type of scripting to force that user account to use a specific NIC. Anybody have any ideas on this? EDIT 1: I think I have a hack to work around my specific problem, however I'd love to hear of a more elegant solution. I got lucky in that the software reads the server IP address out of a config file. So I'm going to have to make a config file for each user and make a customer programs files for each user. Then add a VMware NIC for each user and make each server IP address reside on a different subnet. That will force the traffic for a particular user to a particular IP address, however its really messy and all the VM NIC's will slow down the terminal server. I'll setup a proof of concept Monday and let the group know how it affects performance.

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Productive Writing Software

- by Nick Retallack

What do you guys use to write a personal journal, notes, and reference information that you want to group and search through later? I'm not one of those crazy people who likes to share their journal with the world. Some things I like to keep to myself. It's quite nice to have a reference. Preferences for cross-platform stuff (windows, mac, linux) Some Background For Windows, there's a program called Yeah Write, which really changed my expectations about how easy it should be to start writing something. You don't open or close files -- just click an empty slot and start writing, or click a filled slot to work on another file. And you can organize things into categories by creating tabs. Now that I carry a Macbook, I've just been using TextEdit. I like it because I can't lose my work when my computer crashes: it auto-saves everything and restores it when I launch TextEdit again. But I make a mess, leave thirty open files, and save everything to one directory with no tags for easy grouping. Saving files and selecting the directory they should be in is too clunky to do in the middle of a meeting. And organizing files into folders in the Finder is a pain, since there's no tree view like on Windows. Sure, I'm lazy, but I miss Yeah Write. I'm not going to get a windows laptop just to use it though. Since the laptop I take my notes on is a mac, I'm gonna be biased toward mac solutions.

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How to determine if my AWS/EC2 server has been compromised / resolution?

- by ElHaix

I have recently seen an increase in network in/out activity on my server and am trying to determine if my AWS/EC2 instance has been compromised, and if so, how to resolve? In my security group I have: Inbound: 80 (HTTP) 0.0.0.0/0 Outbound: 80 (HTTP) 0.0.0.0/0 443 (HTTPS) 0.0.0.0/0 Using TCP-UDP Endpoint Viewer: I see a lot of w3wp.exe TCP processes with varying local ports http and numbered, as well as varying remote ports. Some processes go red/yellow/green on updates . I see Remote address for most w3wp processes are my ec2 instance, however I am seeing several to *.deploy.akamaitechnologies.com and *.deploy.static.akamaitechnologies.com with received bytes varying between 4-11 megs. I also see Ec2Config.exe, remote address: 169.254.169.254 System Process Remote Address: fetcher4-4.p.mail.ru (how can I get rid of this one?!) local port: http remote port: 33432 I am also seeing some system processes from 114.216-244-93-rdns.wowrack.com: Protocol: TCP local port: http remote port: varying As well as some baiduspider "System Process"'s. I'm afraid that my system may have been compromised, and wondering if these results are any indication of that. If so, how can I get eliminate these possible threats? I have MS Security Essentials installed.

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150 TB and growing, but how to grow?

- by seandavi

My group currently has two largish storage servers, both NAS running debian linux. The first is an all-in-one 24-disk (SATA) server that is several years old. We have two hardware RAIDS set up on it with LVM over those. The second server is 64 disks divided over 4 enclosures, each a hardware RAID 6, connected via external SAS. We use XFS with LVM over that to create 100TB useable storage. All of this works pretty well, but we are outgrowing these systems. Having build two such servers and still growing, we want to build something that allows us more flexibility in terms of future growth, backup options, that behaves better under disk failure (checking the larger filesystem can take a day or more), and can stand up in a heavily concurrent environment (think small computer cluster). We do not have system administration support, so we administer all of this ourselves (we are a genomics lab). So, what we seek is a relatively low-cost, acceptable performance storage solution that will allow future growth and flexible configuration (think ZFS with different pools having different operating characteristics). We are probably outside the realm of a single NAS. We have been thinking about a combination of ZFS (on openindiana, for example) or btrfs per server with glusterfs running on top of that if we do it ourselves. What we are weighing that against is simply biting the bullet and investing in Isilon or 3Par storage solutions. Any suggestions or experiences are appreciated.

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Apache load balancer with https real servers and client certificates

- by Jack Scheible

Our network requirements state that ALL network traffic must be encrypted. The network configuration looks like this: ------------ /-- https --> | server 1 | / ------------ |------------| |---------------|/ ------------ | Client | --- https --> | Load Balancer | ---- https --> | server 2 | |------------| |---------------|\ ------------ \ ------------ \-- https --> | server 3 | ------------ And it has to pass client certificates. I've got a config that can do load balancing with in-the-clear real servers: <VirtualHost *:8666> DocumentRoot "/usr/local/apache/ssl_html" ServerName vmbigip1 ServerAdmin [email protected] DirectoryIndex index.html <Proxy *> Order deny,allow Allow from all </Proxy> SSLEngine on SSLProxyEngine On SSLCertificateFile /usr/local/apache/conf/server.crt SSLCertificateKeyFile /usr/local/apache/conf/server.key <Proxy balancer://mycluster> BalancerMember http://1.2.3.1:80 BalancerMember http://1.2.3.2:80 # technically we aren't blocking anyone, but could here Order Deny,Allow Deny from none Allow from all # Load Balancer Settings # A simple Round Robin load balancer. ProxySet lbmethod=byrequests </Proxy> # balancer-manager # This tool is built into the mod_proxy_balancer module allows you # to do simple mods to the balanced group via a gui web interface. <Location /balancer-manager> SetHandler balancer-manager Order deny,allow Allow from all </Location> ProxyRequests Off ProxyPreserveHost On # Point of Balance # Allows you to explicitly name the location in the site to be # balanced, here we will balance "/" or everything in the site. ProxyPass /balancer-manager ! ProxyPass / balancer://mycluster/ stickysession=JSESSIONID </VirtualHost> What I need is for the servers in my load balancer to be BalancerMember https://1.2.3.1:443 BalancerMember https://1.2.3.2:443 But that does not work. I get SSL negotiation errors. Even when I do get that to work, I will need to pass client certificates. Any help would be appreciated.

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i7-980X at 70% speed

- by Buxley

Hi we bought a nice computer to use to solve optimization problems. Intel i7-980X@3,33 GHz with 12 GB of Team Group 1600 MHz DDR3 RAM. When we use Gurobi the computer uses all 12 cores at maximum in the beginning of the solve. However after a while (about 8 hrs) it all cores jump between 65 and 85% When I solve the same models on an i7 930 all cores are at a near 100% level even after longer solution times. We first thought that the Hard disk was the bottleneck since Gurobi writes out nodefiles after the memorylimit is used. However since the new computer have 12 GB of RAM we put the memorylimit to 7 GB so the solver only used the RAM and still with the same performance in the processor. Any ideas about the bottleneck? As I said earlier it works at 100% for the first hours or so . Thanks very much for any answers! Our plan was to overclock it but we can't even get it to work at normal speed yet!

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Google Apps Domain Level Shared Contacts?

- by dkirk

My firm just switched to Google Apps Premiere addition 2 weeks ago and aside from the way Google handles shared contacts, things are going quite well. Previously, on our Exchange server we had numerous shared contact lists set up in the shared folders. We had a separate list for vendors, sales agents, etc.. Is there not a way to set up lists or groups such as this on the domain level in Google Apps? I have found a ton of forums with users asking the same question but no good answers unless you purchase some third party app in the marketplace. I have toyed around with the "google-shared-contacts-client" here: http://code.google.com/p/google-shared-contacts-client/ and this almost does it but it falls short when trying to group contacts on the domain level or when trying to search for a contact by company name. Are either of these things possible? I am now looking to create a Google Doc spreadsheet to share with the domain just to have a separated defined list of contacts that is search-able by various fields... Anyone who could shed some light on domain level contact sharing relating to the points above, I would be most grateful...

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Local user vs. domain user? What is the right way here?

- by ebeeb

I'm a software developer in a company with 6 employees. Everyone has a machine for him-/herself, so none of the machines is shared. I'm currently setting up my machine with Windows 8 and was experimenting a bit with domain and local user accounts. Correct me please if I'm wrong, but I think the idea behind is, that domain users generally should not be able to modify the configuration of a machine (like installing software), since they are able to login on every single machine in the domain. The local user (usually just one local administrator per machine) is the one who cares about the configuration of the machine. But in my case the login into the domain is just for being able to access directories/servers in the domain (I do not really know the details, all I know is, that loggin into the domain user account is necessary). So overall I've got a local admin account and a domain account used on my machine. While working I'm logged in to my domain user account. But it annoys me, that I always need to enter the credentials of my local user account when I'm about to update/install something, which happens quite often as a software developer. I fixed this with adding the domain account into the user accounts in my control panel and putting it into the Administrators group. The only thing I wanted to know about this: is there something REALLY bad about doing this? Or is there maybe a more common way to be able to act like a local admin, while logged in as a domain user? PS: I'm sorry about the tags, but I don't know the proper ones. I'd be glad if some of the superuser experts could fix this :-)

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nginx logrotate config

- by TomOP

Whats the best way to rotate nginx logfiles? In my opinion, I should create a file "nginx" in /etc/logrotate.d/ and fill it with the following code and do a /etc/init.d/syslog restart after that. This would be my config (I havn't tested it yet): /usr/local/nginx/logs/*.log { #rotate the logfile(s) daily daily # adds extension like YYYYMMDD instead of simply adding a number dateext # If log file is missing, go on to next one without issuing an error msg missingok # Save logfiles for the last 49 days rotate 49 # Old versions of log files are compressed with gzip compress # Postpone compression of the previous log file to the next rotation cycle delaycompress # Do not rotate the log if it is empty notifempty # create mode owner group create 644 nginx nginx #after logfile is rotated and nginx.pid exists, send the USR1 signal postrotate [ ! -f /usr/local/nginx/logs/nginx.pid ] || kill -USR1 `cat /usr/local/nginx/logs/nginx.pid` endscript } I have both the access.log and error.log files in /usr/local/nginx/logs/ and want to rotate both daily. Can anyone please tell me if "dateext" is correct? I want the log filename to be something like "access.log-2010-12-04". One more thing: Can I do the log rotation every day on a specific time (e.g. 11 pm)? If so, how? Thanks.

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FTP account ownership on vhost directory makes Apache not run website correctly

- by CodeShining

I've purchased a virtual server, where I'm given of a non-root sudo-enabled user. Actually I do need to create an FTP account that's not that sudo-able account, so I created a no-login account just for that purpose. I've set up VSFTPd correctly, also enabling the "userlist" feature, to specify which user are permitted to use FTP. Then I created an empty directory under my sudo-able account, and I gave ownership permissions to the second account, so to make it more easy to understand, let's say the main account (the one I do use to manage my VPS) is called ubuntu and the FTP-user is named ftpuser, I created a directory /home/ubuntu/mywebsite giving the ownership to ftpuser:ftpuser. Then I uploaded a worpdress website, whose default permissions are 755 and 644. The issue is that Apache is not given of any privilege to run the website. How can I make the website run properly, and which is the most secure? Should I run that virtualhost with another user (if it's possible)? Should I force the FTP user to use the www-data group (if that's possible) and run with permissions like 775 and 664? How can I solve this issue? Any help is appreciated, I'd like to run it using the default permissions, so any update won't break up anything (because of permissions reset).

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Windows Server doesn't connect to a network share

- by Dmitriy N. Laykom

Windows Server doesn't connect to a network share. Network share is working. Blockquote Pinging 109.123.146.223 with 32 bytes of data: Reply from 109.123.146.223: bytes=32 time<1ms TTL=63 Reply from 109.123.146.223: bytes=32 time<1ms TTL=63 Reply from 109.123.146.223: bytes=32 time<1ms TTL=63 Ping statistics for 109.123.146.223: Packets: Sent = 3, Received = 3, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms net view \shareaddress Blockquote System error 53 has occurred. The network path was not found. When I connected the network share I observed this error message: Blockquote \ "Mapped disk letter" refers to a location that is unavailable. It could be on a hard drive on this computer, or on a network. Check to make sure that the disk is properly inserted, or that you are connected to the Internet or your network, and then try again. If it still cannot be located, the information might have been moved to a different location The network share was mounted via Group Policy. Perchance anyone knows how I can avoid this error? When the OS has been restored from the disk problem has been solved

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Basic connectivity issues between Win 7 and XP mixed wired/wireless network. [Solved]

- by Pulse

Setup: Windows 7 x64 Ultimate desktop hard wired to Asus WL500gp router (WL500gpv2-1.9.2.7-d-r1445 firmware) Several Bridged VirtualBox VM's running XP, 7, ubuntu server 10.04, Mint 9 and SuSE 11.2 Win XP Pro SP3 notebook with D-Link Airplus wireless network card. No firewall or other security software currently running on either platform (at least for the duration of the test) Situation: Router is acting DHCP server Clients are receiving correct addresses and additional parameters Internet connectivity is available from all clients Windows 7 sharing is set to Network type = work (not home group) NetBT is disabled on all clients using smb over TCP What I can do: I can ping the router and internet addresses from the wireless XP notebook I can ping the Win 7 desktop and any VM from the XP wireless notebook I can ping all devices from the router All VM's and 7 can ping each other and the router as well as Internet addresses What I can't do: I cannot ping the XP wireless notebook from either the Win 7 desktop or the VM's; it always returns a destination host unreachable error. Tracert resolves the name or the XP notebook but also returns a destination host unreachable. From the above it would seem that something is blocking connectivity in a single direction (from the Win 7 box to the Win XP notebook) only but the router can ping the XP notebook. Some fresh input would be most welcome, as this is beginning to drive me batty. Thanks

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HAProxy, health checking multiple servers with different host names

- by Marco Bettiolo

I need to load balance between multiple running servers with different host names. I cannot set-up the same virtual host on each one. Is it possible to have only one listen configuration with multiple server and make the Health Checks apply the http-send-name-header Host directive? I am using HAProxy 1.5. I came up with this working haproxy.cfg, as you can see, I had to set a different hostname for each health check as the health check ignores the http-send-name-header Host. I would have preferred to use variables or other methods and keep things more concise. global log 127.0.0.1 local0 notice maxconn 2000 user haproxy group haproxy defaults log global mode http option httplog option dontlognull retries 3 option redispatch timeout connect 5000 timeout client 10000 timeout server 10000 stats enable stats uri /haproxy?stats stats refresh 5s balance roundrobin option httpclose listen inbound :80 option httpchk HEAD / HTTP/1.1\r\n server instance1 127.0.0.101 check inter 3000 fall 1 rise 1 server instance2 127.0.0.102 check inter 3000 fall 1 rise 1 listen instance1 127.0.0.101:80 option forwardfor http-send-name-header Host option httpchk HEAD / HTTP/1.1\r\nHost:\ www.example.com server www.example.com www.example.com:80 check inter 5000 fall 3 rise 2 listen instance2 127.0.0.102:80 option forwardfor http-send-name-header Host option httpchk HEAD / HTTP/1.1\r\nHost:\ www.bing.com server www.bing.com www.bing.com:80 check inter 5000 fall 3 rise 2

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How can I start hostednetwork on Windows 7?

- by Pirozek

When I type in admin console command to start hostednetwork netsh wlan start hostednetwork it gives me this: The hosted network couldn't be started. The group or resource is not in the correct state to perform the requested operation. There is a hotfix from Microsoft but it didn't help me. Any advice? C:\Users\Pirozek>netsh wlan show driver Interface name: Wireless Network Connection 3 Driver : D-Link AirPlus DWL-G520 Wireless PCI Adapter(rev .B) Vendor : Atheros Communications Inc. Provider : Atheros Communications Inc. Date : 8.7.2009 Version : 8.0.0.171 INF file : C:\Windows\INF\oem108.inf Files : 2 total C:\Windows\system32\DRIVERS\athrx.sys C:\Windows\system32\drivers\vwifibus.sys Type : Native Wi-Fi Driver Radio types supported : 802.11b 802.11g FIPS 140-2 mode supported : Yes Hosted network supported : Yes Authentication and cipher supported in infrastructure mode: Open None Open WEP-40bit Shared WEP-40bit Open WEP-104bit Shared WEP-104bit Open WEP Shared WEP WPA-Enterprise TKIP WPA-Personal TKIP WPA2-Enterprise TKIP WPA2-Personal TKIP Vendor defined TKIP WPA2-Enterprise Vendor defined Vendor defined Vendor defined WPA-Enterprise CCMP WPA-Personal CCMP WPA2-Enterprise CCMP Vendor defined CCMP WPA2-Enterprise Vendor defined Vendor defined Vendor defined WPA2-Personal CCMP Authentication and cipher supported in ad-hoc mode: Open None Open WEP-40bit Open WEP-104bit Open WEP WPA2-Personal CCMP

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Powershell Script Scheduled Task Stopped Running (Could not Start)

- by Hatsune Yuki

I'm running a scheduled task (for Powershell Script) on Windows 2003 Server. I believe the script works fine. The task is scheduled to run every 10 minutes from 7:00am to 11:50pm everyday. However, it never gets to run more for than a day. It always stops some time in the afternoon (between 2pm and 6pm). I'm not sure exactly what happened but I always get the error The attempt to log on to the account associated with the task failed, therefore, the task did not run. The specific error is: 0x80070569: Logon failure: the user has not been granted the requested logon type at this computer. Verify that the task's Run-as name and password are valid and try again. It seems like most people with this error are saying that they need to make user "logon as a batch job". However, this option is greyed-out for me. I search for other places where users have similar problems but the solutions are not written in detail (some of them have something to do with GPO). I've only used the basic features of Windows Server and I have no clue how to get to the place they are referring to. Can someone please confirm whether "logon as a batch job" is indeed a solution and provide a detailed walkthrough on how to solve my problem? Thanks. p.s. someone suggested the website http://technet.microsoft.com/en-us/library/cc755659(v=ws.10) I tried to followed the method for web server with domain. However, got stuck on the 6th step where it mentions Group Policy Object. I don't know where it is.

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Provider claiming "all web servers in the cloud are automatically kept in sync" - should I be skeptical?

- by RobMasters

I'm no expert in cloud computing - I've spent a fair bit of time researching it and various providers but am yet to get any hands-on experience with it. From what I've read about AWS and auto-scaling EC2 instances though, it seems as though each instance should be completely decoupled from all other instances. i.e. If content is uploaded to the web server's local filesystem from a custom CMS backend then that content won't be available if subsequently requested from a different web server in the auto-scaling group. Is that right? I met with a representative of our existing hosting provider recently and he was claiming that it isn't a problem that our legacy CMS system is highly dependent on having a local filesystem. He said that all web servers, regardless of how many, would be kept as exact duplicates so I shouldn't notice any difference compared to our existing setup of a single dedicated server. This smells a little too much like bull fecal-matter to me...should I be skeptical about this? I'm a little worried because my (non-technical) boss who ultimately makes the decisions is all for signing up to this cloud solution because it won't require any extra work. I'm sure that they must at least be able to provide this, otherwise they wouldn't be attempting to sell it to us. But at what cost? It sounds as though each web server will always need to be checking the other web server(s) for new static content, which to me sounds like unwanted overhead that'll slow things down. I'd really appreciate it if somebody could clear this up to me. I'm all for switching to AWS and using S3+CloudFront for all static content, but that isn't looking very likely to happen at the moment.

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i7 x980 at 70% speed

- by Buxley

Hi we bought a nice computer to use to solve optimization problems. intel i7 X980@3,33 Mhz with 12 Gb of Team Group 1600 MHz ddr3 Ram. When we use Gurobi The Computer uses all 12 cores at maximum in the beginning of the solve. However after a while (about 8 hrs) it all cores jump between 65 and 85% When I solve the same models on an I7 930 all cores are at a near 100% level even after longer solution times. we first thought that the Harddisk was the bottleneck since Gurobi writes out nodefiles after the memorylimit is used. However since the new computer have 12 GB of Ram we put the memorylimit to 7 GB so the solver only used the RAM and still with the same performance in the processor. Any Ideas about the bottleneck? As I said earlier it works at 100% for the first hours or so . Thanks very much for any answers! Our plan was to overclock it but we can't even get it to work at normal speed yet!

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Sending same email through two different accounts on different domains using Outlook 2010

- by bot

I am a programmer and don't have experience in Outlook configurations. Our company has two email domains namely xyz.com and xyz.biz. Each employee has an email id on one of these domains but not both depending on the project they are working on. The problem we are facing is that when a communication email is sent from the Accounts, HR, Admin, etc departments, they need to send the email twice. Once through the xyz.com account to all employees with an email address on xyz.com and once through xyz.biz to all employees with an email address on xyz.biz. I am not sure why they have to send two separate emails but the IT team has directed all departments to do so as there is no other solution according to them. Even though two different groups have been created, sending an email to employees in a group of xyz.biz from xyz.com does not seem to work. I want to know if Outlook provides a feature such that we can configure some kind of rules to send an email through an id on xyz.com to all users on xyz.com and the same email gets sent automatically to users on xyz.biz through an id on xyz.biz. The only technical details I know is that we are using Exchange 2003 and the IT team claims that this is a limitation causing the problem. Edit: Our company is split into two main divisions depending on the type of projects. I am pretty sure I use domain XYZ wheras the employees in the other division use the doman ABC to log in into the windows machine or outlook itself. Also, employees in domain XYZ can access the machines on the network in domain ABC but not the other way around

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linux shutdown hang with wifi cifs mounts

- by Sirex

Since fedora 15 (and now with 16) it seems that wireless clients take a long while to shutdown when they have network filesystems mounted at shutdown time. I've pushed out a cifs mount via puppet, and all clients have it, including those on wireless. If say a laptop is on a wired connection it shuts down just fine, but if its on the wifi at the time (and no wired connection) it'll hang at the fedora f logo. I'm not sure if its indefinite or just a really long while, but ill give it a test when i shut this machine down in a second. Needless to say its pretty annoying, so is there a way of causing the machine to shutdown even if network connectivity has been lost at unmount time, -- or an official way to reorder events so the wireless card is kept up until after the unmount happens during the shut down process (short of writing a custom script for shutdowns which is a bit of a kludge) ? It does this on multiple machines, and all started doing it when we went from fedora 14 to 15. It was such an obvious issue i'd kind of assumed someone must have reported it or there was an easy fix, but i've not discovered anything yet. Additional info: I can confirm that manually unmounting the mounts then shutting down (sudo shutdown or the xfce shutdown button) will shutdown just fine, it only hangs if the mounts are still mounted The puppet config that sets the mount looks like this (now with the _netdev entry that is indeed pushed to clients successfully, but makes no difference): file { "/mnt/share": ensure = directory,} mount { "/mnt/share": atboot = true, ensure = mounted, remounts = false, fstype = cifs, device = "//srv/share", options = "user,gid=shareusers,uid=${user},file_mode=0700,dir_mode=0700,credentials=/root/.smbcreds,_netdev", require = [ File["/mnt/share"], Group["shareusers"] ], } }

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Why are SIP calls via my server silent?

- by Archcode

I have FreeSWITCH SIP server up and running. It has public IP and sits behind 1-to-1 NAT (it's Amazon EC2 instance actually). I can connect to it, make a call to other endpoint (namely, my android device to my pc and vice versa) and signals are send with no problems (call, answer, hangup, etc). Unfortunately, and what drives me crazy, that's all: no audio gets through, no video either. Server does not throw errors, it reports many retransmission though, looks like this: switch_rtp.c:915 [ zrtp engine]: WARNING! HELLO Max retransmissions count reached (20 retries). ID=15 Codecs are set up correctly (same config worked locally on my LAN). NAT/firewall on client side may be a problem, signals do get through (perhaps due to fixed port, data streaming runs on random one, that is currently my best bet). STUN/TURN/ICE setting on client seem to have no effect. Endpoints sit behind symmetric NAT. On server there are no iptables rules, security group is set as suggested there: http://wiki.freeswitch.org/wiki/Firewall Help, please. How to make it work or at least diagnose what's wrong?

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How to export and import an user profile from one Quassel core to another?

- by Zertrin

I have been using Quassel as my bouncer for IRC for quite a long time now. We (a group of administrators of a small network) have set up a shared Quassel core with many users on the same core. But now I would like to export everything related to my user account from the Quassel database on this core, in order to re-import it later in another Quassel core on my own server. Unfortunately, while a feature for adding users has been implemented into Quassel, nothing is so far provided for either exporting or deleting an user. (if deleting-a-user feature was available, I could have made a copy of the current database, delete all the other users leaving only mine, and use this resulting database on my own server, while leaving the first one untouched on the shared server) Despite extensive research on the Internet on this subject, I've found so far no solution. I have to precise that the backend database for the core has been migrated from the default SQLite backend to a PosgreSQL backend as the database grew sensibly (over 1,5 GB for now). However I'd be glad to hear from any working solution (SQLite or PostgreSQL backend) describing a way to export the data related to a specific user profile and then re-import-it in a new Quasselcore database.

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