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  • How to implement a virtual server running Ubuntu inside a fileserver in windows?

    - by user541445
    I work in a company that has some limitations regarding their budget. They need client/server aplication. I can code the aplication, I've made mini tests on primordial applications that work. The thing is that they only have fileservers, and the application they need must be concurrent compliant, so the database must be in their local network (Fileserver is the only choice). So far, I have explored almost any option available, starting with: Desktop databases. Access (We have a license)(But concurreny is just not effective, besides it's a windows software, yuck). Sqlite (Nice, but since the information they manage is a lot, I've performed some concurrency tests with INSERTs and doing SELECTS at the same time). It fails, somehow it just stops inserting. Open office Base (I dismember a base office only to see that it was a file mode HSQLDB). I've tried, not concurrent at all. Etc (You name the Open source Desktop Database manager, and yes, I've tried that one.) Server databases Call me a stubborn person, but reading some server databases documentation say that their databases will work in a file mode. I've tried a lot of products. Postgres, MySQL, FireBird, H2, Derby, Oracle Express, IBM DB2 Express, etc. So, I really need a hand here, I've been doing this install/delete/depression thing with a lot of databases for 3 weeks, until I got with a crazy idea and I just came here to express it. So, my question comes down to this: Installing a light virtual OS software like Virtual PC and then installing in there a Server OS like an Ubuntu server inside that virtual software will work? Will it work 24/7 or when I close the virtual pc software? Will this work in a fileserver? Any suggestion, answer, critic to the place I work, crazy new concurrent database that will work in fileserver will be most than welcome.

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  • w2k3 AD DC Demotion fails with "no other AD DC for that domain can be contacted"

    - by Kstro21
    i've a small office with a single w2k3 sp2 DC(bad idea, but it is real), now, i want to make a clean install of that pc, so, i got another one, install w2k3 sp2, add it to the domain, dcpromo and set it to be a GC, untill now everything is ok, then tried to dcpromo in the primary DC, but it fails with The box indicating that this domain controller is the last controller for the domain mydomain.com is unchecked. However, no other Active Directory domain controllers for that domain can be contacted. Do you wish to proceed anyway? If you click Yes, any Active Directory changes that have been made on this domain controller will be lost. So, i started to move all the roles to the new server as described here, when all was ok with the roles, i tried doing the same, but got the same result. Tried moving the DNS to the new server, but it doesn't make difference. Shutdown to the old server, then tried to log into a workstation, but it fails saying the domain is not available, also coudln't add new workstation to the domain, so i have to power on the old server again. So, if i successfully move all the roles and dns to the new server: why dcpromo give such message in the old server? why if i shutdown the old server the domain is not available?? if i successfully move all the roles and dns to the new server, and i click yes when dcpromo give warning in the old server, will i lose all users, computers, ou, etc.? am i missing some steps to make this work?? hope you can help me thanks

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  • Issues using gmail with google apps and external domain

    - by Jonathan Kelly
    I have recently tried to use gmail through google apps as my main email client, but I'm experiencing a few different problems. I am managing the domain (conjunktiondesign.co.uk) through 123reg.co.uk but it is hosted through fasthosts.co.uk. I transfered the domain to 123reg as fasthosts did not allow me to change the MX records myself. I followed the setup instructions step by step on google apps and changed the MX records as they told me to. My email was now working perfectly but my website was down and I was getting the following error: The dnsserver returned: No DNS records I have a friend that is using the same system as me (ie. Externally hosted domain and google apps mail) and I changed my 123reg details to the same that he had (as his was working perfectly - both email and website). I changed my name servers to point to fasthosts, rather than 123reg and I added an A record called '@' pointing to fasthosts IP address. I also created another A record called 'www' pointing to fasthosts IP address. After I did this, my website worked almost immediately but I have only realised that since changing it my email is now down. I have not received anything since Saturday. I am a web designer and would consider myself fairly tech savvy, but I have no idea about A records, CNAME's and all the things I have been messing about with! What I ultimately need is someone to help me get my email and website working at the same time, rather than one being down when the other is OK. I seem only able to get one or the other working. I have now changed the name servers back to 123reg in an attempt to get my email back as it is more important than my website at this stage. Any help is much appreciated. Thanks.

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  • hosts.deny ignored by MacOSX 10.8

    - by David Holm
    I have been trying to set up my MacOS X Server, which I recently upgraded to Mountain Lion, to use denyhosts as I need to open port 22 to it. denyhosts is set up and adds entries to /etc/hosts.deny so I decided to add my laptops IP to it in order to verify that it actually works but I can still log in and my IP shows up in /private/var/log/system.log. I even rebooted the server once just to be sure there wasn't some service that had to be restarted. I tried the following entries: ALL: <my laptop's IP> sshd: <my laptop's IP> sshd: 127.0.0.1 My /etc/sshd_config has the following parameters set: UsePAM yes UseDNS no I Googled if deny.hosts has been deprecated in OSX 10.7 or 10.8 but I couldn't find any indications that it has. Any ideas of what is going wrong or if there is an alternative way to achieve the same result? Yes, a private key would solve this problem but for the time being I would like to stick to using password authentication. I also like the idea of denyhosts actually blocking access to all services running on the server and not just ssh.

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  • v2v of RHEL5 box - issues with retaining MAC address

    - by Alex Berry
    For the last week we have been troubleshooting a customer's Red Hat Virtual Machine running on ESXi. We've been using Veeam to try to create a replica off-site and have been having getting it to work on a decent schedule and recently we noticed that there were issues with orphaned snapshots while looking at the datastore. You can see several snapshots in the same folder and it's causing issues with replication and backup, so we decided the cleanest way was to v2v the machine to another datastore so that we had a clean single-vmdk setup to work with, this is where our trouble started. We first started off with a v2v using vmware converter and connecting to the powered on machine as we were having issues doing an offline v2v. This copied fine but when I tried to set a static MAC using this article http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=507 the new VM wouldn't take the address, it simply obtained a new MAC, received a dhcp lease and then would only boot up to a blank red screen, never the login screen. So the next step was to do an offline v2v, once we finally got it working. Same thing, followed the kb to the letter and still it wouldn't take the MAC. I then tried it again and upon completion I compared both old and new VMX file, copying every identifier and variable possible, then unregistered both VMs, uploaded the new VMX file and booted, only to see the same results. Finally I did the same as above but I copied the disk using DD to a second attached vmdk and then attached this to the new VM, and still no luck. After downloading the modified VMX file after the first boot and comparing it to the original I created I found that the bios uuid had changed from the one I typed in manually, so I'm assuming this may be the snagging point, but I have no idea. I've never had this issue before on a P2V and I'm just wondering if someone could shed some light on this, maybe it's to do with RHEL licencing?

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  • Postfix message ID originating process?

    - by Anders Braüner Nielsen
    Last night my postfix mail server(Debian Squeeze with dovecot, roundcube, opendkim and spamassassin enabled) started sending out spam from a single domain of mine like these: $cat mail.log|grep D6930B76EA9 Jul 31 23:50:09 myserver postfix/pickup[28675]: D6930B76EA9: uid=65534 from=<[email protected]> Jul 31 23:50:09 myserver postfix/cleanup[27889]: D6930B76EA9: message-id=<[email protected]> Jul 31 23:50:09 myserver postfix/qmgr[7018]: D6930B76EA9: from=<[email protected]>, size=957, nrcpt=1 (queue active) Jul 31 23:50:09 myserver postfix/error[7819]: D6930B76EA9: to=<[email protected]>, relay=none, delay=0.03, delays=0.02/0/0/0, dsn=4.4.2, status=deferred (delivery temporarily suspended: lost connection with mta5.am0.yahoodns.net[66.196.118.33] while sending RCPT TO) The domain in question did not have any accounts enabled but only a catchall alias set through postfixadmin - most emails were send from a specific address I use frequently but some were also sent from bogus addresses. None of the other virtual domains handled by postfix were affected. How can I find out what process was feeding postfix/sendmail or more info on where they originated? As far as I can tell php mail() wasn't used and I've run several open relay tests. I did a little tinkering(removed winbind from the server and ipv6 addresses from main.cf) after the attack and it seems to have subsided but I still have no idea how my server was suddenly sending out spam. Maybe I fixed it - maybe I didn't. Can anyone help figuring out how I was compromised? Anywhere else I should look? I've run Linux Malware Detect on recently changed files but nothing found.

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  • Hyper-V vss-writer not making current copies

    - by Martinnj
    I'm using diskshadow to backup live Hyper-V machines on a Windows 2008 server. The backup consists of 3 scripts, the first will create the shadow copies and expose them, the second uses robocopy to copy them to a remote location and the third unexposes the shadow copies again. The first script – the one that runs correctly but fails to do what it's supposed to: # DiskShadow script file to backup VM from a Hyper-V host # First, delete any shadow copies of the drives. System Drives needs to be included. Delete Shadows volume C: Delete Shadows volume D: Delete Shadows volume E: #Ensure that shadow copies will persist after DiskShadow has run set context persistent # make sure the path already exists set verbose on begin backup add volume D: alias VirtualDisk add volume C: alias SystemDrive # verify the "Microsoft Hyper-V VSS Writer" writer will be included in the snapshot # NOTE: The writer GUID is exclusive for this install/machine, must be changed on other machines! writer verify {66841cd4-6ded-4f4b-8f17-fd23f8ddc3de} create end backup # Backup is exposed as drive X: make sure your drive letter X is not in use Expose %VirtualDisk% X: Exit The next is just a robocopy and then an unexpose. Now, when I run the above script, I get no errors from it, except that the "BITS" writer has been excluded because none of its components are included. That's okay because I really only need the Hyper-V writer. Also I double checked the GUID for the writer, it's correct. During the time when the Hyper-V writer becomes active, 2 things will happen on the guest machines: The Debian/Linux machine will go to a saved state and restore when done, all fine. The Windows guests will "creating vss snapshop-sets" or something similar. Then X: gets exposed and I can copy the .vhd files over. The problem is, for some reason, the VHD files I get over seems to be old copies, they miss files, users and updates that are on the actual machines. I also tried putting the machines in a saved sate manually, didn't change the outcome. I hope someone here has an idea of how to solve this.

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  • Games, Windows 8.1 and 144Hz display

    - by Marioysikax
    So I have been having problems with few games after switching from 7 to 8.1, which seems to be related to my 144Hz monitor. Few examples: Shank, Shank 2, Blood of the Werewolf, Astebreed, the Sims 2 and Rayman Legends patch 1.2Had few other as well but it's been long and I have 600+ steam library. From those games at least the Sims 2 and Shank worked without any problems with same setup and Windows 7. So basically these games simply refuse to launch with basic setup. However if I plug 60Hz TV with HDMI instead everything magically starts to work. As for Astebreed and the Sims 2 using windowed mode seems to also work. As for Rayman Demo and version 1.0 works for some reason and 1.2 breaks settings menu. I have already tried contacting supports. EA support stated game simply shouldn't work with 8.1 at all (which is lie as it works with that TV and friend with 8 plays just fine), ubisoft support took few weeks and support said he will forward info for further processing, blood of the werewolf support had no idea what's going on and told me to just use my TV instead.Changing monitors refresh rate to 120Hz or forcing it to 60Hz doesn't do anything. I have DVI right now but I will try with DisplayPort when I get the cable. At PCGW Garrett said it may have something to do how listing resolutions work with 8 compared to earlier Windows versions but my googling skills don't bring anything up and compatibility mode for earlier windows version doesn't work either (not that I expected that to work). My system specs are on my steam profile. How do I get those work with my 144Hz monitor as well as possible future games having same problem? Downgrading to 7 would work but is far from practical and I don't own legit lisence for that one.

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  • Unable to logon using terminal server connection

    - by satch
    I have several W2K3 SP2 servers, admin TS enabled. I discovered this morning, I was unable to logon into some of them. I've a couple of Citrix servers in different farms, a SAP (IA64) app server and a cvs server. All of them show same sympthoms; remote connections are refused. I've been able to logon locally, and terminal server service is up, there are no users (so connections are not depleted). There are no errors in log in most servers. One of the Citrix ones, reported following errors: Event ID 50 Source TermDD Type Error Description The RDP protocol component X.224 detected an error in the protocol stream and has disconnected the client. and Event ID 1006 Source TermService Type Error Description The terminal server received large number of incomplete connections. The system may be under attack. Anyway, I suppose these errors appear because server isn't working, and Citrix users try to logon massively. (I nmap'ed server and port seems up). I've solved this problem rebooting before, but with so many servers affected it seems like a crappy workaround. Any idea about troubleshooting it properly? Thanks in advance

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  • Is it possible to change "working directory" of XeTeX?

    - by Herbert Sitz
    Using XeTeX there are many working files that get created in process of producing the pdf, and they litter the directory where my main .tex file is. Is it possible to change the working directory of XeTeX so that it stores all these scratch files in some other directory, out of the way? There is a previous question on Superuser.com that discusses a utility that cleans up the working files by deleting them after they're produced: http://superuser.com/questions/95712/how-to-avoid-littering-ones-tex-directories-with-intermediate-files That solution doesn't work for me since I'm using XeTeX, but also it seems like it would be preferable to simply be able to designate a "scratch" directory where all working files are saved. I haven't been able to find any info on how to do it though. Is there a way? (My question is prompted partly because of the fact that I often work with files in a directory that is shared using DropBox, so it creates a lot of unnecessary traffic if files are getting created and destroyed willy nilly. I don't know if it affects speed in any way, but the idea of having a separate working directory that is not shared/replicated by DropBox would be a cleaner solution, even if I could use the method suggested in the earlier thread.)

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  • server dosnt produce syn-ack

    - by steve
    I have a small program that take packets from the nfqueue . change the ip.dst to my server dst (and ttl), recalc checksum and return the packet to the nfqueue. The server and the client are linux and apache web server is run on the server and listen on port 80. i open telnet in the client to fake ip on port 80 . the packet is changed by my program and sent to the server, but the target server (the new dst ip) get the syn , but dosnt generate syn-ack (the server also belong to me , so i can see that it get the syn with checksum correct , but dosnt generate syn-ack). if i do the same , but with the real server ip as the dest, the tcp handshake is done correct (in this case i just change the ttl and checksum. The change that i did to the ttl is just a test to see that my checksum calc is ok). i compare the sys's , but didnt find and difference. Any idea? Ps. i saw this topic : Server not sending a SYN/ACK packet in response to a SYN packet and i set all flags the same , but this didnt help. Thank you

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  • Membership in two domains

    - by imagodei
    Hello! I would your suggestions for an effective solution for a person, who needs to access resources in two Windows domains and wants to use one computer. It's about our CEO, who has accepted a second position in another company. Accessing files and folders isn't big problem. The greatest challenge I see is that he wants to conveniently access Exchange accounts in both companies; he would like to send and receive mail in single Outlook if possible (two profiles?) There is also a challenge with calendars: he would like to have one calendar for all activities from both Exchange accounts. Creating a POP3 account for accessing second Exchange server is a last resort, because obviously there is a problem with scheduling meetings and other calendar related tasks. Forwarding and receiving all mail/tasks on primary Exchange server is inconvenient because simple replying to original sender is disabled; and also when manually changing the recepient, he will receive mail from the wrong address. We were considering Virtualisation, that is setting up an instance of virtual machine inside existing installation and then joining this virtual computer to a second domain. Then installing another MS Outlook. This would of course mean two different Outlook accounts, two different calendars, but would at least enable our CEO to access all information from a single laptop. Does anyone have any other idea? I know setting up two domains on a single computer is a no-go (without much hacking at least), but effective workarounds are appreciate. The thing I am looking here is high usage/efficiency/productivity, but also as elegant solution from the administration point of view. Thank you very much (if you managed to read this through, this is a good sign ^_^ )

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  • VMware "boot screen" - add info like contact, phone number, etc.?

    - by TheCleaner
    I've tried searching Google and VMware's KB but maybe I'm not typing the right search criteria...only finding ways to fix problems with booting or screen issues. On the default boot screen of a host it looks similar to this picture from GIS: I'm curious if it is possible somehow to make it look like this instead (adding custom details): I know for the most part the info is "useless" since it is administered remotely, etc. But when I deploy standalone hosts to branch offices, it'd be nice for them to see this type of info on the boot screen. I may also include the VMs hosted on it (again on standalone hosts). Normal monitoring, etc. will be done remotely. This is strictly for odd times when the branch contact may say "the electricians are saying they need to turn off this circuit but I have no idea who to call in IT to tell them this box needs to be shut down" or similar. Anyone who has dealt with small branch offices can tell you that if it isn't labeled they easily forget what it is for and will simply say after the incident "I didn't know what it was or who to call." Possible?

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  • How to set up RAID-0 first time on new PC?

    - by jasondavis
    I have built basic PC's in the past but have never used a RAID array at all. SO now I am buying parts to build my new PC, it will be an intel i7 processor. My motherboard will have RAID support which I will use instead of an aftermarket raid controller for now. Also I plan to use 2 SSD drives in RAID-0 for my windows 7 OS. (Please note that I am aware of the issues with doing this, including lack of TRIM support when using RAID with SSD drives. I am OK with it not working as I can just re[place the drives in a year or so or wheneer they become more sluggish). SO here is my question part. If I assemble the motherboard, PSU, processor, RAM, vidm card, etc and then go to turn the PC on, it will have the 2 SSD drives hooked up. so I assume I will then soon the BIOS screen before I install windows? How to I go about making the 2 drives work in RAID-0 at this point? I do the raid part before installing my OS right? Please help with the steps involved from assembling the parts of the PC and then turning it on, to the part of getting the RAID-0 set up between the 2 drives and then installing my windows 7 OS from a Optical drive? Please help, all advice, instructions, tips appreciated as long as on topic. I do not need to be told that this is a bad idea as far as if 1 drive fails I losse it all, I plan on having a disk IMAGE to be able to restore my OS and software to a new set of drives at anytime needed in the event of drive failure. Same goes for lack of TRIM support. Thanks for reading and help =)

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  • Can't route specific subnet thru VPN in ubuntu

    - by Disco
    I'm having issues routing traffic thru VPN. Here's my setup I have 3 hosts, let's call them A, B and Z B and Z have a VPN connection in the 10.10.10.x SUBNET A and B have a direct connection in the 10.10.12.x SUBNET I want to be able to route traffic from A to Z, like : A <= 10.10.12.254 [LAN] 10.10.12.111 => B <= 10.10.10.152 [VPN] 10.10.10.10 => Z On host B, i have set up ip_forwarding : net.ipv4.ip_forward = 1 and routing on host B: [root@hostA: ~]# ip route 10.10.10.10 dev ppp0 proto kernel scope link src 10.10.10.152 10.10.12.0/24 dev eth1 proto kernel scope link src 10.10.12.111 10.10.10.0/24 dev ppp0 scope link 169.254.0.0/16 dev eth1 scope link routing on host A: [root@hostA: ~]# ip route 10.10.10.0 via 10.10.12.111 dev eth1 10.10.12.0/24 dev eth1 proto kernel scope link src 10.10.12.254 169.254.0.0/16 dev eth1 scope link default via 192.168.1.1 dev eth0 But still not able to ping 10.10.10.10 from host A. Any idea ? I'm pulling my hairs out.

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  • Server 2008 R2 domain windows update strategy

    - by Joost Verdaasdonk
    Let me explain my question a bit. We are a small company that have now made the first move to a bigger network. For now the network contains of 5 servers 2008 R2 (dc,sql,web,etc..). Everything we need is now in place but for now we cannot afford to finish the network by implementing redundant systems. (secondary dc, dns, sql cluster, etc...) For some people this is hard to understand but this is the current situation. (and we are aware and will fix this when we can) Because we want to keep our system secure and up to date I've made sure that all systems are updated regularly. The problem is ofc that the nr of updates Microsoft rolls out that need a system reboot seam to occur more often. (maybe I'm wrong and it just feels like this) ;-) In our domain servers depend on each other for services (like SQL, WEB, or whatever) so just rebooting a server at will is NOT a good idea! For now I update all of them without rebooting at once. After all are up to date I bring them down in the order they are depended on each other. After this I reboot all of them in the inverse order. I understand ofc that if I DID have redundancy in my system that updating and rebooting would not be such a problem because the server task could be taken over by another node but this is something we generally need to add when we can. So my question is. If you read my above situation can you suggest me more Update strategies or general ideas that could help me do this process in a better / faster way? Thanks for your thoughts!

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  • Sharing a folder with Nautilus and NTFS external drive gets errors

    - by TheLQ
    I am trying to share a folder in Lubuntu over a network that's on an external NTFS drive. Due to the system that I have (rotating backup disks) this is probably the second time that the drive would of been mounted. Its manually mounted with a simple (for example) mount /dev/sdb1 /media/BACKUP On an internal NTFS disk I have successfully setup a network share and can access it. However on the external disk I can't from any other Windows computer. When setting up the share Nautilus said that it needs to change the other's permissions to allow for other users to write. However afterwords its still blank. Changing it to Read and Write just changes back to blank. Chowning the entire /media folder recursively and trying didn't work. Running PCManFM as root and changing didn't work. Adding "public=yes" to smb.conf and restarting didn't work. I'm out of idea's on what to do. What's weird is that it worked just fine on an internal NTFS disk, so why not the external one? Any solutions need to be able to managed inside of a gui (preferably Nautilus) as the person managing the machine isn't as tech savvy. Thanks

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  • Is my OCZ SSD aligned correctly? (Linux)

    - by Barney Gumble
    I have an OCZ Agility 2 SSD with 40 GB of space. I use it as a system drive in Debian Linux (Squeeze) and in my opinion it's really fast. But I've read a lot on aligning partitions and file systems... And I'm not sure if I succeeded in aligning the partitions correctly. Maybe the SSD could be even faster?? ;-) I use ext4 and here is the output of fdisk -cul: Disk /dev/sda: 40.0 GB, 40018599936 bytes 255 heads, 63 sectors/track, 4865 cylinders, total 78161328 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: [...] Device Boot Start End Blocks Id System /dev/sda1 * 2048 73242623 36620288 83 Linux /dev/sda2 73244670 78159871 2457601 5 Extended /dev/sda5 73244672 78159871 2457600 82 Linux swap / Solaris My partitions were created just by the Debian Squeeze setup assistant. So I didn't care about the details of partitioning. But now I think maybe the installer didn't align it correctly? Actually, 2048 looks good to me (better than odd values like 63 or something like that) but I've no idea... ;-) Help plz! According to some "SSD Alignment Calculator" I found on the web, the OCZ SSDs have a NAND Erase Block Size of 512kB and their NAND Page Size is 4kB. 2048 is divisible by 4 and 512. So are the partitions aligned correctly?

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  • How do I install php 5.3 on CentOS?

    - by fivelitresofsoda
    Hi, I have to install php5.3 on my centos server. If i do yum install php, the base repo installs 5.1.6 which is too old for the apps i need to install. So i've been trying to use the ius repository, following the official instructions from ius: root@linuxbox ~]# wget http://dl.iuscommunity.org/pub/ius/stable/Redhat/5/x86_64/ius-release-1-2.ius.el5.noarch.rpm root@linuxbox ~]# wget http://dl.iuscommunity.org/pub/ius/stable/Redhat/5/x86_64/epel-release-1-1.ius.el5.noarch.rpm root@linuxbox ~]# rpm -Uvh ius-release*.rpm epel-release*.rpm Ok. Now i simply do yum install php53, etc for all i need... but i get this error: Running rpm_check_debug Running Transaction Test Finished Transaction Test Transaction Check Error: file /usr/bin/php from install of php53u-cli-5.3.4-3.ius.el5.x86_64 conflicts with file from package php-cli-5.1.6-27.el5_5.3.x86_64 file /usr/bin/php-cgi from install of php53u-cli-5.3.4-3.ius.el5.x86_64 conflicts with file from package php-cli-5.1.6-27.el5_5.3.x86_64 file /usr/share/man/man1/php.1.gz from install of php53u-cli-5.3.4-3.ius.el5.x86_64 conflicts with file from package php-cli-5.1.6-27.el5_5.3.x86_64 file /etc/php.ini from install of php53u-common-5.3.4-3.ius.el5.x86_64 conflicts with file from package php-common-5.1.6-27.el5_5.3.x86_64 Error Summary ------------- I have no idea how to solve this. I think i have to delete the base packages however as a linux noob i don't know how to do that. Please help. Thank you.

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  • Route all wlan0 traffic over tun0

    - by Tuinslak
    I'm looking for a way to route all wlan0 traffic (tcp and udp) over tun0 (openvpn). However, all other traffic originating from the device itself should not be routed through tun0. I'm guessing this could be realized using iptables or route, but none of my options seem to work. # route add -net 0.0.0.0 gw 172.27.0.1 dev wlan0 SIOCADDRT: No such process Info: This is because the VPN server is not redundant, and wlan users are not really important. However, all services running on the device are fairly important and having a VPN virtual machine with no SLA on it is just a bad idea. Trying to minimize the odds of something going wrong. So setting the VPN server as default gateway is not really an option. I also want all wlan0 user to use the VPN server's IP address as external IP. Edit with the script provided: root@ft-genesi-xxx ~ # route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 172.27.0.17 0.0.0.0 255.255.255.255 UH 0 0 0 tun0 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 10.13.37.0 0.0.0.0 255.255.255.0 U 0 0 0 wlan0 172.27.0.0 172.27.0.17 255.255.192.0 UG 0 0 0 tun0 0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 eth0 root@ft-genesi-xxx ~ # ./test.sh RTNETLINK answers: No such process root@ft-genesi-xxx ~ # cat test.sh #!/bin/sh IP=/sbin/ip # replace with the range of your wlan network, or use fwmark instead ${IP} rule add from 10.13.37.0/24 table from-wlan ${IP} route add default dev tun0 via 127.72.0.1 table from-wlan ${IP} route add 10.13.37.0/24 dev wlan0 table from-wlan

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  • MySQL is killing the server IO.

    - by OneOfOne
    I manage a fairly large/busy vBulletin forums (running on gigenet cloud), the database is ~ 10 GB (~9 milion posts, ~60 queries per second), lately MySQL have been grinding the disk like there's no tomorrow according to iotop and slowing the site. The last idea I can think of is using replication, but I'm not sure how much that would help and worried about database sync. I'm out of ideas, any tips on how to improve the situation would be highly appreciated. Specs : Debian Lenny 64bit ~12Ghz (6 cores) CPU, 7520gb RAM, 160gb disk. Kernel : 2.6.32-4-amd64 mysqld Ver 5.1.54-0.dotdeb.0 for debian-linux-gnu on x86_64 ((Debian)) Other software: vBulletin 3.8.4 memcached 1.2.2 PHP 5.3.5-0.dotdeb.0 (fpm-fcgi) (built: Jan 7 2011 00:07:27) lighttpd/1.4.28 (ssl) - a light and fast webserver PHP and vBulletin are configured to use memcached. MySQL Settings : [mysqld] key_buffer = 128M max_allowed_packet = 16M thread_cache_size = 8 myisam-recover = BACKUP max_connections = 1024 query_cache_limit = 2M query_cache_size = 128M expire_logs_days = 10 max_binlog_size = 100M key_buffer_size = 128M join_buffer_size = 8M tmp_table_size = 16M max_heap_table_size = 16M table_cache = 96 Other : > vmstat procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu---- r b swpd free buff cache si so bi bo in cs us sy id wa 9 0 73140 36336 8968 1859160 0 0 42 15 3 2 6 1 89 5 > /etc/init.d/mysql status Threads: 49 Questions: 252139 Slow queries: 164 Opens: 53573 Flush tables: 1 Open tables: 337 Queries per second avg: 61.302. Edit Additional info.

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  • "iostat" command different in two equal machines

    - by Oz.
    We have several machines on Amazon (ec2) of the type c1.xlarge with 8 cpus, running the Amazon AMI. Details on the machine: 7 GB of memory 20 EC2 Compute Units (8 virtual cores with 2.5 EC2 Compute Units each) 1690 GB of instance storage 64-bit platform I/O Performance: High API name: c1.xlarge One out of the several machines is showing a high load average, since we have run the last yum upgrade a couple of weeks a go. We did not yet update the other machines, and everything looks normal on them. The strange thing is that the top command not showing any hint for the cause of the load. CPUs are - 4.8%us, 1.1%sy, 0.0%ni, 94.1%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st. Mem is about 1.5GB free. Any idea what could it be, or where else can we check? iostat command on the proper machine: avg-cpu: %user %nice %system %iowait %steal %idle 8.97 0.03 4.46 0.19 0.14 86.23 Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn xvdap1 1.60 0.69 55.38 587620 47254184 xvdfp2 2.64 1.10 61.04 934786 52091056 xvdfp4 0.86 0.19 41.72 163866 35601920 xvdfp1 4.37 36.59 73.89 31220810 63051504 xvdfp3 8.03 7.08 94.63 6045402 80749184 iostat command on problematic machine: avg-cpu: %user %nice %system %iowait %steal %idle 9.29 0.04 5.55 0.26 0.11 84.74 Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn xvdap1 2.13 3.34 68.85 246244 5077888 xvdfp1 7.60 74.31 104.88 5480362 7734840 xvdfp3 13.22 73.67 125.00 5433386 9218600 xvdfp4 1.11 0.76 65.08 55762 4799248 xvdfp2 4.16 3.31 99.17 243818 7313264 Many thanks for the help.

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  • background jobs and ssh connections

    - by petrelharp
    This question has come up quite a lot (really a lot), but I'm finding the answers to be generally incomplete. The general question is "Why does/doesn't my job get killed when I exit/kill ssh?", and here's what I've found. The first question is: How general is the following information? The following seems to be true for modern Debian linux, but I am missing some bits; and what do others need to know? All child processes, backgrounded or not of a shell opened over an ssh connection are killed with SIGHUP when the ssh connection is closed only if the huponexit option is set: run shopt huponexit to see if this is true. If huponexit is true, then you can use nohup or disown to dissociate the process from the shell so it does not get killed when you exit. If huponexit is false, which is the default on at least some linuxes these days, then backgrounded jobs will not be killed on normal logout. But even if huponexit is false, then if the ssh connection gets killed, or drops (different than normal logout), then backgrounded processes will still get killed. This can be avoided by disown or nohup as in (2). There is some distinction between (a) processes whose parent process is the terminal and (b) processes that have stdin, stdout, or stderr connected to the terminal. I don't know what happens to processes that are (a) and not (b), or vice versa. Final question: How can I avoid behavior (3)? In other words, by default in Debian backgrounded processes run along merrily by themselves after logout but not after the ssh connection is killed. I'd like the same thing to happen to processes regardless of whether the connection was closed normally or killed. Or, is this a bad idea?

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  • Connect by Wifi to Sql Server from another computer

    - by Bronzato
    I try to connect by Wifi to Sql Server with Sql Server Management Studio from another computer but it failed. I have a computer with Windows Seven & Sql Server 2008 (lets say the server computer). Next to it, I have a fresh installed computer with Windows Seven & Sql Server Management Studio (let's say the client computer). What I do on the server computer: configure firewall by enabling port 1433 enabled network protocols (TCP/IP) inside Sql Server Configuration Manager checked "Allow remote connections to this server" on server properties in Sql Server Management. started Sql Server Browser restarted services (Sql Server Browser is stopped but I think it is not neccessary, isn't it?) Next, I successfully tested a ping on the port 1433 from my client computer with a tool named tcping (ex: tcping 192.168.1.4 1433). But I still cannot connect from my client computer to Sql Server on my other computer. Ok, something new on this problem: until now, I successfully connected to my "server computer" with Management Studio. What I do is typing the computer name in the server name field in the connection window of Management Studio. My previous (failed) attempt was to type the computer name followed by the instance of sql server (ex: COMPUTER_NAME\SQL2008). I don't know why I only have to type the computer name... Nevermind. Now my new challenge is to succeed connecting my VB6 application to this remote database located on my "computer server". I have a connection string for this but it failed to connect. Here is my connection string: "Provider=SQLOLEDB.1;Password=mypassword;User ID=sa;Initial Catalog=TPB;Data Source=THIERRY-HP\SQL2008" Any idea what's wrong? Thanks

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  • How do I use key combinations on an axis on a joystick in xorg?

    - by valadil
    I'm using xserver-xorg-input-joystick on Debian Stable so I can use a joystick in place of the mouse. I have mouse movement working correctly, but got stuck trying to add functions for some other keys. These work: #Left stick #Pointer Option "MapAxis1" "mode=relative axis=1.5x" Option "MapAxis2" "mode=relative axis=1.5y" #Right stick #Arrow keys Option "MapAxis4" "mode=relative keylow=Left keyhigh=Right" Option "MapAxis5" "mode=relative keylow=Up keyhigh=Down" But when I try to make key combos (so I can navigate windows and screens in xmonad) I have no luck. #dpad #xmonad focus #up/down toggle window. l/r choose screen. Option "MapAxis8" "mode=relative keylow=Super_L,k keyhigh=Super_L,j" Option "MapAxis7" "mode=relative keylow=Super_L,w keyhigh=Super_L,e" I've also tried Super_R, plain old Super, Meta, and mod4mask, and anything else I can think of. These buttons print the letter, but don't appear to hold down the modifying key. The exception to that is shift. If I specify Shift_L or Shift_R, I get a capital letter. xev indicates that modifier keys are being pressed. If I lower Axis8, I get press Super_L, press k, release k, release Super_L. That looks like it should be working. Maybe this is an xmonad problem and not a joystick driver one? I'm also having trouble with getting an axis to use other XF86 keys: # triggers # song selection Option "MapAxis3" "mode=relative keylow=none keyhigh=XF86AudioForward" Option "MapAxis6" "mode=relative keylow=none keyhigh=XF86AudioBack" That does nothing. Any idea why? If it turns out that this isn't something I can do on an axis, but would work with a button, is there a way to treat my joysticks as buttons? Also, if anyone has suggestions for the other 5 buttons I'll have left after mouse buttons are bound, I'm listening.

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