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Articles indexed Saturday August 23 2014

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  • Architecture behind live streaming [on hold]

    - by l19
    I'm a Comp Sci undergraduate student, and I'm currently trying to understand the architecture behind streaming. I hear several terms and I'm not quite sure how they are related (e.g. streaming, broadcasting, ingesting, etc.) Is there a blog post or book that explains: How it all works in a high-level view (the workflow) The architecture (i.e. I capture content using my camera and want to display it real-time to an audience. I imagine that the content will be transferred to a server, but how does that server transmit the information to several users simultaneously?) Thanks!

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  • ssh timeout issue connecting to an EC2 instance on OS X

    - by mamusr
    I am new to AWS and not a networking expert but curious to know more about it. I created a VPC with a public subnet only. Then i created an EC2 instance using an Ubuntu 14.04 64-bit pv AMI image (ami-e84d8480) as well generating the key pair needed to connect to it through ssh. I followed amazon's instructions to connect to an EC2 instance via ssh which did not work. Here is my attempted input and debug log: Running on OS X 10.9.4 user$ ssh -vvv -i key.pem [email protected] OpenSSH_6.2p2, OSSLShim 0.9.8r 8 Dec 2011 debug1: Reading configuration data /etc/ssh_config debug1: /etc/ssh_config line 20: Applying options for * debug1: /etc/ssh_config line 102: Applying options for * debug2: ssh_connect: needpriv 0 debug1: Connecting to xxx.xxx.xxx.xxx [xxx.xxx.xxx.xxx] port 22. debug1: connect to address xxx.xxx.xxx.xxx port 22: Operation timed out ssh: connect to host xxx.xxx.xxx.xxx port 22: Operation timed out To attempt to resolve the issue: I enabled the SSH port. Tried different usernames other than ubuntu, like ec2-user and root. Initially set an inbound ssh rule in the security group to connect to only my ip address. When that did not work, i changed it to allow any ip to connect. But those actions did not fix the problem. Here are my guesses as to what i am missing in getting the EC2 instance connection to work. My etc/ssh_config file may be preventing the connection from taking place. I may have missed an important networking detail when setting up the VPC. I do not have a public ip address specified for the instance. I am connecting through the private ip address. My questions for the community: Am i going about it the wrong way connecting to the instance through the private ip address? if so, do i need to specify a public ip address for it to connect or some other method?

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  • rebuild yum index on aws s3

    - by Chucks
    I am trying to rebuild yum repo on aws S3 after adding new packages. Here are few commands I am trying, but it is not helping. [[email protected] ~]$ createrepo --baseurl http://rpmcopy.xxxxx.com.s3-website-us-east-1.amazonaws.com /repodata/ --update Saving Primary metadata Saving file lists metadata Saving other metadata Generating sqlite DBs Sqlite DBs complete How do I give a path from S3? /repodata/ path is not relevent I believe. All my pkgs are under bucket s3://rpmcopy.xxxxx.com/. And repodata dir is under s3://rpmcopy.xxxxx.com/repodata

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  • Configuring multiple domain in nginx in one file

    - by user22695
    I am still newbie configuring nginx. Is it posibble to configure multiple domain in one file and they share mostly the same config? For example I want to configure two domains that based from one app and one domain need basic auth, the other doesn't. I would like to do something like this, but I think this does not work: sites-enabled/mysite server { listen 127.0.0.1:80 default_server; server_name www.mysite.com; include sharedconf.conf; } server { listen 127.0.0.1:80; server_name www.mysite.co.jp; auth_basic "restricted"; auth_basic_user_file /etc/nginx.htpasswd; include sharedconf.conf; } sharedconf.conf location / { proxy_pass_header Server; #... bunch of config line ... }

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  • kernel panic after LVM setup

    - by Manuel Sopena Ballesteros
    I broke my webserver... My setup is: VMWare ESXi environemt CPanel installed CentOS release 6.5 (Final) 4 CPUs 2G RAM 2x VM disks 100G each LVM system This was my previous storage settings (the server was working fine at this time): # df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_test01-lv_root 95G 1.4G 88G 2% / tmpfs 939M 0 939M 0% /dev/shm /dev/sdb1 99G 188M 94G 1% /tmp /dev/sda1 485M 54M 407M 12% /boot My web developer asked me to merge /tmp and / disks so this is what I did: Delete /dev/sdb1 partition using fdisk Create a new partition as LVM on /dev/sdb1 using fdisk Create a new physical volume -- pvcreate /dev/sdb1 Extend volume group -- vgextend /dev/sdb1 vg_test01 Extend logical volume -- lvextend -l +100%FREE /dev/vg_test01/lv_root Resize filesystem -- resize2fs /dev/vg_test01/lv_root This is the new configuration: # df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_test01-lv_root 213G 105G 97G 52% / tmpfs 939M 0 939M 0% /dev/shm /dev/sda1 485M 54M 407M 12% /boot /usr/tmpDSK 4.0G 145M 3.6G 4% /tmp Since I have the new settings my web server is throwing kernel panics quite often (around every 2 days). The message says: INFO: task <taskName>:<pid> blocked for more than 120 seconds. The list of process affected that I can see from the console are: mysqld queueprocd httpd suphp vmtoolsd loop0 auditd The only way I can fix this is reseting (cold reboot) the VM. I don't think it is a hardware issue as sar is not showing any bottleneck: Linux 2.6.32-431.3.1.el6.x86_64 (test01) 08/22/2014 _x86_64_ (4 CPU) 12:00:01 AM CPU %user %nice %system %iowait %steal %idle 12:10:01 AM all 26.86 0.01 0.98 0.57 0.00 71.57 12:20:01 AM all 1.78 0.02 1.03 0.08 0.00 97.09 12:30:01 AM all 26.34 0.02 0.85 0.05 0.00 72.74 12:40:01 AM all 27.12 0.01 1.11 1.22 0.00 70.54 12:50:01 AM all 1.59 0.02 0.94 0.13 0.00 97.32 01:00:01 AM all 26.10 0.01 0.77 0.04 0.00 73.07 01:10:01 AM all 27.51 0.01 1.16 0.14 0.00 71.18 01:20:01 AM all 1.80 0.07 1.06 0.08 0.00 96.99 01:30:01 AM all 26.19 0.01 0.78 0.05 0.00 72.96 01:40:01 AM all 26.62 0.02 0.87 0.05 0.00 72.45 01:50:02 AM all 1.35 0.01 0.87 0.02 0.00 97.75 02:00:01 AM all 26.11 0.02 0.69 0.02 0.00 73.17 02:10:01 AM all 26.73 0.02 0.89 0.14 0.00 72.21 02:20:01 AM all 1.45 0.01 0.92 0.04 0.00 97.58 02:30:01 AM all 26.59 0.01 1.06 0.03 0.00 72.31 02:40:01 AM all 26.27 0.01 0.72 0.05 0.00 72.95 02:50:01 AM all 0.86 0.01 0.50 0.09 0.00 98.53 03:00:01 AM all 25.61 0.02 0.39 0.03 0.00 73.96 03:10:01 AM all 26.30 0.08 0.66 0.14 0.00 72.82 03:20:01 AM all 0.81 0.01 0.51 0.04 0.00 98.63 03:30:02 AM all 26.15 0.02 0.53 0.07 0.00 73.24 03:40:01 AM all 26.06 0.01 0.47 0.04 0.00 73.42 03:50:01 AM all 0.96 0.02 0.51 0.03 0.00 98.48 Average: all 17.69 0.02 0.79 0.14 0.00 81.36 06:58:14 AM LINUX RESTART 07:00:01 AM CPU %user %nice %system %iowait %steal %idle 07:10:01 AM all 1.04 0.02 0.57 0.95 0.00 97.42 07:20:02 AM all 0.66 0.01 0.39 0.06 0.00 98.87 07:30:01 AM all 25.71 0.01 0.45 0.16 0.00 73.67 07:40:01 AM all 25.88 0.01 0.35 0.08 0.00 73.68 07:50:01 AM all 1.13 0.02 0.55 0.11 0.00 98.19 As you can see the server became unresponsive at 03.50 AM and I had to reset the VM at 06.58 AM to bring the website up again. I would appreciate any help/assistance to fix this issue. thank you very much

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  • What is the best way to configure Apache or AWS to support a Rails multi tenancy application that allows each customer to have their own domain name?

    - by Ryan Arneson
    I'm building a Rails 3 SaaS site that allows for multi-tenancy. When a customer signs up they put in their own domain name, e.g. example.com. I need example.com to point to my SaaS application and serve them their content. My questions are as follows: Do I need to create an Apache vhost for each customer using their own domain? Is there an easier way with CNAME's to just have the customer point to the IP address of my server(s) that then forwards the request onto my application through some catch all vhost? Would I be able to create the CNAME record for the customer so they don't have to do any setup? Would this be a case better suited to Amazon Web Services? Any help or explanation or corrections on my understanding of dns would be appreciated. I'm a developer so the server ops portion of this is a bit cloudy.

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  • How can I bridge a VM to a remote network?

    - by asciiphil
    I have a system running QEMU/KVM (via libvirt). One of its VMs needs to have a presence on a subnet that is not local to the VM host. I have a Linux system on the remote subnet. Is there a way to set up some sort of tunneled bridge to cause the VM to appear present on the remote system? This will be a temporary situation (hopefully just until the VM owner can configure their system) and network performance and long-term maintainability aren't really issues. To give some more concrete information: My VM host has IP address 192.168.54.155/24. The VM has IP address 192.168.65.71/24. I have a remote system at 192.168.65.254/24. Both the VM host and remote system are running Scientific Linux 6.5. I do not control the network or routing in between the VM host and remote system. I do not have access to the guest OS on the VM. I would like traffic to the VM's IP address to end up at the VM even though its host isn't directly connected to the appropriate network. I've tried using iproute2's tunnelling, but Linux won't let me add a tunnel to a bridge. I've considered using some sort of iptables mangling to route traffic over the tunnel and make the VM think it's on the right network, but I'm not sure whether there are better approaches. What's the best way to accomplish this hack?

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  • Online resizing of kvm guest root filesystem?

    - by Bittrance
    I have a Linux guest that uses an LVM volume directly as root file system (that is, there is no partition table). libvirt config looks thus: <os> <type arch='x86_64' machine='rhel6.4.0'>hvm</type> <kernel>/boot/vmlinuz-X.Y.Z.el6.x86_64</kernel> <initrd>/boot/initramfs-X.Y.Z.el6.x86_64.img</initrd> <cmdline>console=ttyS0 root=/dev/vda</cmdline> <boot dev='hd'/> </os> <disk type='block' device='disk'> <driver name='qemu' type='raw' cache='none' io='native'/> <source dev='/dev/vg/guest'/> <target dev='vda' bus='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </disk> From inside the guest: $ mount /dev/vda on / type ext4 (rw) proc on /proc type proc (rw) sysfs on /sys type sysfs (rw) devpts on /dev/pts type devpts (rw,gid=5,mode=620) tmpfs on /dev/shm type tmpfs (rw) none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw) Is it possible to resize the guest's root partition without rebooting the guest? Just doing lvextend on the host and resize2fs from the guest does not seem to be enough.

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  • virsh XML interface allocation

    - by Kaushik Koneru
    I am trying to launch VM using a XML. This VM will be having 5 interfaces each connected to certain bridge. Issue here is allocation of these interfaces is random. My XML <interface type='bridge'> <mac address='52:54:00:9f:14:b3'/> <source bridge='br0'/> <target dev='vnet1'/> <model type='e1000'/> <alias name='net0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> <interface type='bridge'> <mac address='52:54:00:9f:14:b4'/> <source bridge='br1'/> <target dev='vnet2'/> <model type='e1000'/> <alias name='net1'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x10' function='0x0'/> </interface> <interface type='bridge'> <mac address='52:54:00:9f:14:b5'/> <source bridge='br2'/> <target dev='vnet2'/> <model type='e1000'/> <alias name='net3'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x12' function='0x0'/> </interface> <interface type='bridge'> <mac address='52:54:00:9f:14:c4'/> <source bridge='br3'/> <target dev='vnet3'/> <model type='e1000'/> <alias name='net4'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x18' function='0x0'/> </interface> Allocation of interfaces are random mean e th6 will be connected to br3 ; eth7 -- br4 eth8 -- br2 eth9 -- br0. Is there any way to make it static?? At the same time is there anyway of assigning IP Address to these eth interfaces through XML file itself??

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  • ERROR with rpm_check_debug vs depsolve

    - by Frank Thornton
    Transaction Summary ========================================================================================================================================================== Install 9 Package(s) Upgrade 227 Package(s) Remove 1 Package(s) Total size: 252 M Downloading Packages: Running rpm_check_debug ERROR with rpm_check_debug vs depsolve: libasound.so.2()(64bit) is needed by libgcj-4.4.7-4.el6.x86_64 libasound.so.2(ALSA_0.9)(64bit) is needed by libgcj-4.4.7-4.el6.x86_64 ** Found 15 pre-existing rpmdb problem(s), 'yum check' output follows: alsa-lib-devel-1.0.22-3.el6.x86_64 has missing requires of alsa-lib = ('0', '1.0.22', '3.el6') alsa-lib-devel-1.0.22-3.el6.x86_64 has missing requires of libasound.so.2()(64bit) alsa-utils-1.0.22-5.el6.x86_64 has missing requires of libasound.so.2()(64bit) alsa-utils-1.0.22-5.el6.x86_64 has missing requires of libasound.so.2(ALSA_0.9)(64bit) alsa-utils-1.0.22-5.el6.x86_64 has missing requires of libasound.so.2(ALSA_0.9.0rc4)(64bit) alsa-utils-1.0.22-5.el6.x86_64 has missing requires of libasound.so.2(ALSA_0.9.0rc8)(64bit) frontpage-2002-SR1.2.i386 has missing requires of libexpat.so.0 gstreamer-plugins-base-0.10.29-2.el6.x86_64 has missing requires of libasound.so.2()(64bit) gstreamer-plugins-base-0.10.29-2.el6.x86_64 has missing requires of libasound.so.2(ALSA_0.9)(64bit) gstreamer-plugins-base-0.10.29-2.el6.x86_64 has missing requires of libasound.so.2(ALSA_0.9.0rc4)(64bit) libgcj-4.4.7-3.el6.x86_64 has missing requires of libasound.so.2()(64bit) libgcj-4.4.7-3.el6.x86_64 has missing requires of libasound.so.2(ALSA_0.9)(64bit) 1:qt-x11-4.6.2-26.el6_4.x86_64 has missing requires of libasound.so.2()(64bit) 1:qt-x11-4.6.2-26.el6_4.x86_64 has missing requires of libasound.so.2(ALSA_0.9)(64bit) 1:qt-x11-4.6.2-26.el6_4.x86_64 has missing requires of libasound.so.2(ALSA_0.9.0rc4)(64bit) Your transaction was saved, rerun it with: yum load-transaction /tmp/yum_save_tx-2013-12-23-22-364infzT.yumtx [email protected] [~]# I did some research and this is due to a 32bit binary trying to install itself or broken repo? [email protected] [~]# yum repolist Loaded plugins: fastestmirror, security Loading mirror speeds from cached hostfile * base: centos.mirror.lstn.net * extras: mirror.ash.fastserv.com * updates: ftp.usf.edu repo id repo name status base CentOS-6 - Base 6,284+83 dag Dag RPM Repository for Red Hat Enterprise Linux 4,559+91 extras CentOS-6 - Extras 14 updates CentOS-6 - Updates 247+39 repolist: 11,104 Now I disabled epel and rpmforge repops and still ended up with the same issues. Ideas?

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  • TLS: hostname does not match CN in peer certificate

    - by borjamf
    im trying to connect LDAP over StartTLS but Im stuck with an issue. I've followed step by step this guide https://help.ubuntu.com/12.04/serverguide/openldap-server.html#openldap-tls and LDAP it's working OK as well as "ldapsearch -xZZ -h 172.25.80.144" on my Ubuntu Sever 12.04 However, in my Ubuntu Desktop 11.04 Client I get this error: ldapsearch -x -H 172.25.80.144 -ZZ ldap_start_tls: Connect error (-11) additional info: **TLS: hostname does not match CN in peer certificate** Server /etc/ldap/ldap.conf BASE dc=prueba,dc=borja URI ldap://prueba.borja SIZELIMIT 12 TIMELIMIT 15 DEREF never TLS_CACERT /etc/ssl/certs/ca-certificates.crt Client /etc/ldap.conf ssl start_tls tls_checkpeer no /etc/ldap/ldap.conf BASE dc=prueba,dc=borja URI ldap://prueba.borja SIZELIMIT 12 TIMELIMIT 15 DEREF never TLS_REQCERT allow Anybody could tell me how to fix this? I think that the hostname its ok. Thanks!

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  • Configure custom SSL certificate for RDP on Windows Server 2012 in Remote Administration mode?

    - by Ryan Bolger
    So the release of Windows Server 2012 has removed a lot of the old Remote Desktop related configuration utilities. In particular, there is no more Remote Desktop Session Host Configuration utility that gave you access to the RDP-Tcp properties dialog that let you configure a custom certificate for the RDSH to use. In its place is a nice new consolidated GUI that is part of the overall "edit deployment properties" workflow in the new Server Manager. The catch is that you only get access to that workflow if you have the Remote Desktop Services role installed (as far as I can tell). This seems like a bit of an oversight on Microsoft's part. How can we configure a custom SSL certificate for RDP on Windows Server 2012 when it's running in the default Remote Administration mode without needlessly installing the Remote Desktop Services role?

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  • ClamD server Currently Down

    - by RedLEON
    I'm getting this error message after install ClamAV from direcadmin message system. OS: CentOs 5. The service 'clamd' on server star.tunahost.net is currently down This message has been automatically generated notifying you that the service clamd is currently down. Why can I get this error for each hour? I checked up cron jobs and I couldn't find any job about it. How to control Clamd service? OS: CentOS with DirectAdmin

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  • Apache process consuming all memory on the server

    - by jemmille
    I have an apache process that suddenly appears on a particular server. When it shows up it starts consuming memory at a very rapid rate, then moves on to all the swap. In all it consumes about 11GB (including swap) of memory and the server eventually becomes unresponsive. The load on the server is under 1 at all other times. The process runs as nobody and I am having a hard time tracking down the source. If i run an strace on the process and all it did was continuously dump out mprotect over and over again If i run lsof -p <pid>, I get this, but only sometimes: httpd 19229 nobody 152u IPv4 175050 crawl-66-249-67-216.googlebot.com:62336 (CLOSE_WAIT) httpd 19229 nobody 153u IPv4 179104 crawl-66-249-71-167.googlebot.com:58012 (ESTABLISHED) As long as I catch it, I can kill the process and the server almost immediately stabilizes. I have on site on the server that is getting a few thousand hits a a day that I think might be the source, but I still can't find the exact reason. Also, this is a cPanel server and I have upcp'd the server, rebuilt apache with easy apache, and rebuilt httpd.conf. It is not spawing any related processes, meaning I can find any php, mysql, cgi, etc. processes that relate to this process. It's just a loner process that balloons fast and consumes ever last MB of memory. This is on a XenServer 5.6 based VM. No other servers in the cluster are having this issue.

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  • Are there any FIPS-140-2 certified solutions for Linux?

    - by Mark Renouf
    I'm not even 100% certain what this involves, but my current understanding is this: use of only approved cryptographic algorithms for network traffic (easy, we use SSL and lock down the algorithms to only the really strong ones). Some form of physical data protection, involving disk encryption and physical tamper evident packaging. Obviously we're on our own if we need a tamper-proof product. But what about software for encrpytion. My guess is just using LUKS (although secure) will not be certified because it's open source (gov't seems a bit biased towards proprietary solutions here). Guardian Edge was mentioned by someone, but that appears to be complete Windows-based. So we need something like it, certified FIPS-140 compliant we can use on Linux.

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  • Cannot delete an existing service using sc command: The Specified service does not exist as an installed service

    - by Graviton
    As shown in the picture below, I want to delete MyNewService, but when I type in sc delete MyNewService I simply can't delete it because there is no such servic, due to "the Specified service does not exist as an installed service" error Any ideas how to solve this problem? Edit: as far as the service panel is concerned, the MyNewService is there all the time; I restarted the pc a few times, and it's there.

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  • Add Mirror for volumes other than the last one in Windows 7 (disk "not up-to-date")

    - by rakslice
    I'm using Windows 7 x64 Ultimate. I have an existing 4TB disk with 3 NTFS volumes, a new 3TB blank disk, and I'm trying to mirror the volumes onto the new disk. My Windows install is on an SSD which is Disk 0. The 4TB disk with volumes is Disk 1, and the new blank disk is Disk 2. I can add a mirror successfully for the last volume, but when I try to add a mirror for the first volume I immediately get errors (see below). Is there something I special I need to do to add a mirror for a volume other than the last one? More info: I opened Disk Management, right-clicked on the first volume on the existing disk, went to Add Mirror, and selected the new disk. The first time I did this I was prompted to convert the new disk to a Dynamic Disk, which I approved. Subsequently I got a message: The operation failed to complete because the Disk Management console view is not up-to-date. Refresh the view by using the refresh task. If the problem persists close the Disk Management console, then restart Disk Management or restart the computer. I've refreshed disk management, restarted the computer, and converted the new disk to basic and back to dynamic, but I still get that error message. Looking around for suggestions of a workaround, I saw a suggestion to use the diskpart command line tool. Running diskpart from the Start Menu as Administrator, I did select volume 2 (the first volume I want to mirror) and then add disk 2 (the new disk), and received a somewhat similar error: Virtual Disk Service error: The disk's extent information is corrupted. DiskPart has referenced an object which is not up-to-date. Refresh the object by using the RESCAN command. If the problem persists exit DiskPart, then restart DiskPart or restart the computer. A rescan appears to be successful: DISKPART> select disk 2 Disk 2 is now the selected disk. DISKPART> rescan Please wait while DiskPart scans your configuration... DiskPart has finished scanning your configuration. but attempting to add the mirror again resulted in the same error. The only similar report I found online was this: http://www.sevenforums.com/hardware-devices/335780-unable-mirror-all-but-last-partition-drive.html Based on that I attempted to mirror the last volume on the disk to the new disk using diskpart, and that started successfully -- it is currently resynchronizing. More Background: In the course of dealing with a failing 3TB hard drive, I bought a replacement 4TB drive and installed it, then copied the partitions from the failing drive to it using Minitool Partition Wizard Home, and then removed the failing drive and was up and running again normally. Now I've received a warranty replacement for the failing drive, and installed it, and now I'm attempting to mirror my partitions to it.

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  • Installing FIREFOX with extensions/addons manually? (not really auto install)

    - by BrownChiLD
    I've been reading around with regards to creating firefox installers, bundling it w/ addons, using scripts, and CLI lines and a whole bunch of stuffs ... but it seems that going through this route is just too complicated and time consuming.. Since i don't mind a bit of manually copying files and stuff, I was planning to do the following: on my test machine, 1) install firefox on a machine AND configure it the way i want it 2) install addons AND set the configurations for it 3) set advanced configurations for firefox (about:config) Then once i'm all set, I just simply copy the contents of the firefox/profiles folder (for this particular tests it's ....\AppData\Local\Mozilla\Firefox\Profiles\6m0mef0s.default for deployment, all i have to do is: 1) Install the same version (offline installer) of the Firefox i used.. 2) overwrite the contents of the new profiles folder (randomly named by Firefox installer as usual) .. This should set all my configs and addons right? or what other folders do i have to backup and copy manually into the new profiles folder? I don't think i need to tinker w/ any registries right? anyway, if this works, though it's a bit manual, it's a whole lot simplier, and straight forward than fiddling w/ Installers and Packages etc.. PS I do this a lot w/ other simple (and some complex) software that i use and they seem to work fine for years.. i'm just not sure with firefox and how it's structured..

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  • Hard drive failed, suspected filesystem corruption, still cannot salvage any data from harddrive

    - by Hippy-Head
    Firstly, I am terribly sorry if this is a duplicate, but I couldn't find a similar issue to mine, so here goes. I have a 1TB hdd bought around 8 months ago used as backup hard drive. I have not used the drive for a period of time whatsoever, and when I was trying to get back to some files on it, it was completely wiped just like that. At first it would not boot I tried everything from command line chkdsk and filesystem recovery software to rebuilt it. After a few attempts I managed to initialize it, at that time it was an achievement. The problems started when I tried to recover the data inside, I have used A LOT of software free and commercial software on both Mac and Windows, with the help of cmd or Terminal commands, however no data of any kind was recovered, even after leaving it thoroughly scan for around 9-10 hours all night sometimes longer, with no results at all. I am somewhat desperate, I am usually good at retrieving data from corrupt hard drives, but this is not the case. Call me paranoid, but I do not want to give it to someone to fix it for me, as I have a lot of photos and personal stuff that I do not want anyone to see.

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  • How can Windows XP/7 users cleanly connect to Mac OS X Server 10.9.4 Mavericks with Active Directory integration?

    - by JakeGould
    I’m a Linux/Unix systems admin who also manages a Macintosh server infrastructure & there is a lone Mac Mini in the mix running 10.9.4 that I would like Windows XP & Windows 7 users to connect to with little or no hassle. The problem? Windows users can’t seem to even get to the point of a password prompt yet connect. Mind you this server replaced a Mac OS X 10.6.8 server that had issues, but never had issues with Windows users connected. The gist of this post is: The tons of different messages out there about Mac OS X 10.9.4 Samba support are mind-numbingly confusing. Can anyone share some solid specifics here? I’ve read pieces like this one here that suggest turning off file sharing & then adding a share with AFP/SMB enabled would work. But the suggestion seems to apply to 10.8. And from what I know a lot has changed in Samba support in 10.9 let alone the iterations to 10.9.4. Then I found this great tutorial here that explains things step-by-step. Which seems like it should work, but the problem is the example given applies to a local user created on the Mac when I would like users in an Active Directory group—which the Mac is bound to—access the Mac Mini shares. There are also tons of great tips here on MacWindows.com but nothing seems solid to the issue I am facing. So from what I am reading these are my options: Local User Versus Active Directory: Setup a common local user on the Mac OS X 10.9.4 server to be used for Samba sharing since Active Directory won’t work. Is this really the case? Because loss of AD integration is a major pain. Do Extended File Attributes Get Retained from Windows Users: If this were to work, how do extended attributes come into play? Loss of metadata & related info is not an option. How Fragile is Any of this to Updates: How does any of this shake out with Mac OS X updates as well as Windows updates? Installing Official, Open Source Samba: Would upgrading the Samba install on the server to the official open source Samba via a package like SMBUp or via the Hombrew method described here help or make the issue worse? I fully understand there have historically been issues in mixed environments, but nowadays Windows users connecting to a Mac seem to have a truly hellish road ahead of them. Unless I am missing something?

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  • SSL23_WRITE:ssl handshake failure:s23_lib.c:177

    - by Armin
    When attempting to connect to an xmpp server over SSL, openssl fails with the following error: 3071833836:error:140790E5:SSL routines:SSL23_WRITE:ssl handshake failure:s23_lib.c:177 I believe that the server uses the RC4-MD5 cipher, here is the full output: [[email protected] ~]# openssl s_client -connect 184.106.52.124:5222 -cipher RC4-MD5 CONNECTED(00000003) >>> SSL 2.0 [length 0032], CLIENT-HELLO 01 03 03 00 09 00 00 00 20 00 00 04 01 00 80 00 00 ff b0 c9 c2 3f 0b 0e 98 df b4 dc fe b7 e8 8f 17 9a 34 b5 9b 17 1b 2b ac 01 dc bd 2b a9 2d 18 44 0c 3071866604:error:140790E5:SSL routines:SSL23_WRITE:ssl handshake failure:s23_lib.c:177: --- no peer certificate available --- No client certificate CA names sent --- SSL handshake has read 0 bytes and written 52 bytes --- New, (NONE), Cipher is (NONE) Secure Renegotiation IS NOT supported Compression: NONE Expansion: NONE --- Using gnutls-cli: [[email protected] ~]# gnutls-cli 184.106.52.124 -p 5222 Resolving '184.106.52.124'... Connecting to '184.106.52.124:5222'... *** Fatal error: A TLS packet with unexpected length was received. *** Handshake has failed GNUTLS ERROR: A TLS packet with unexpected length was received. Connecting to the same server on port 5223 works fine. Using OpenSSL 1.0.1e-fips on CentOS 6.5 and OpenSSL 1.0.1f on Ubuntu 14.04.1 Any tips on how to troubleshoot this? Thanks in advance.

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  • shell script over SSH ends unexpectedly after running 'ant build'

    - by YShin
    I wrote a shell script that runs on remote host to build source code with 'ant build' command, and then distribute the built binary to other servers. However, right after Ant build is over successfully(I can see the command line output saying Build was successful), the ssh session ends and whatever commands after 'ant build' does not get executed. I'm confused what might be cause of this behavior. I suspected that it might be because the 'ant build' command takes too long time, and SSH somehow quits itself after that long command. But I don't think that's correct since if I just do 'sleep 60' in place of 'ant build' command, it actually execute latter commands as intended. I'm new at shell programming, so I might have made some silly misassumption. Can someone provide a pointer to a possible cause of this problem? My shell script #!/bin/bash # Inject some variables ssh -T [email protected]$SSH_URL "setenv REMOTE_BASE_DIR $REMOTE_BASE_DIR; setenv CASSANDRA_SRC_TAR_FILE $CASSANDRA_SRC_TAR_FILE; setenv CASSANDRA_SRC_DIR_NAME $CASSANDRA_SRC_DIR_NAME; setenv CLUSTER_SIZE $CLUSTER_SIZE; setenv REMOTE_REDEPLOY_SCRIPT $REMOTE_REDEPLOY_SCRIPT; /bin/bash" << 'EOF' export JAVA_HOME=/usr/lib/jvm/jdk1.7.0 cd $REMOTE_BASE_DIR/$CASSANDRA_SRC_DIR_NAME echo "## Building Cassandra source" ant clean build # Anything after this doesn't run echo "## Ant Build is over. Invoking redeploy script on remote nodes" # Invoke redeploy script for each node for (( i=0; i < CLUSTER_SIZE; i++)) do echo "## Invoking redeploy script on node-$i" done Command-line output ## Building Cassandra source Buildfile: /scratch/ISS/shin14/repos/apache-cassandra-2.0.8-src-0713/build.xml clean: [delete] Deleting directory /scratch/ISS/shin14/repos/apache-cassandra-2.0.8-src-0713/build/test [delete] Deleting directory /scratch/ISS/shin14/repos/apache-cassandra-2.0.8-src-0713/build/classes [delete] Deleting directory /scratch/ISS/shin14/repos/apache-cassandra-2.0.8-src-0713/src/gen-java [delete] Deleting directory /scratch/ISS/shin14/repos/apache-cassandra-2.0.8-src-0713/src/resources/org/apache/cassandra/config init: [mkdir] Created dir: /scratch/ISS/shin14/repos/apache-cassandra-2.0.8-src-0713/build/classes/main [mkdir] Created dir: /scratch/ISS/shin14/repos/apache-cassandra-2.0.8-src-0713/build/classes/thrift [mkdir] Created dir: /scratch/ISS/shin14/repos/apache-cassandra-2.0.8-src-0713/build/test/lib [mkdir] Created dir: /scratch/ISS/shin14/repos/apache-cassandra-2.0.8-src-0713/build/test/classes [mkdir] Created dir: /scratch/ISS/shin14/repos/apache-cassandra-2.0.8-src-0713/src/gen-java maven-ant-tasks-localrepo: maven-ant-tasks-download: maven-ant-tasks-init: maven-declare-dependencies: maven-ant-tasks-retrieve-build: init-dependencies: [echo] Loading dependency paths from file: /scratch/ISS/shin14/repos/apache-cassandra-2.0.8-src-0713/build/build-dependencies.xml check-gen-cli-grammar: gen-cli-grammar: [echo] Building Grammar /scratch/ISS/shin14/repos/apache-cassandra-2.0.8-src-0713/src/java/org/apache/cassandra/cli/Cli.g .... check-gen-cql2-grammar: gen-cql2-grammar: [echo] Building Grammar /scratch/ISS/shin14/repos/apache-cassandra-2.0.8-src-0713/src/java/org/apache/cassandra/cql/Cql.g ... check-gen-cql3-grammar: gen-cql3-grammar: [echo] Building Grammar /scratch/ISS/shin14/repos/apache-cassandra-2.0.8-src-0713/src/java/org/apache/cassandra/cql3/Cql.g ... build-project: [echo] apache-cassandra: /scratch/ISS/shin14/repos/apache-cassandra-2.0.8-src-0713/build.xml [javac] Compiling 43 source files to /scratch/ISS/shin14/repos/apache-cassandra-2.0.8-src-0713/build/classes/thrift [javac] Note: /scratch/ISS/shin14/repos/apache-cassandra-2.0.8-src-0713/interface/thrift/gen-java/org/apache/cassandra/thrift/Cassandra.java uses or overrides a deprecated API. [javac] Note: Recompile with -Xlint:deprecation for details. [javac] Note: Some input files use unchecked or unsafe operations. [javac] Note: Recompile with -Xlint:unchecked for details. [javac] Compiling 865 source files to /scratch/ISS/shin14/repos/apache-cassandra-2.0.8-src-0713/build/classes/main [javac] Note: Some input files use or override a deprecated API. [javac] Note: Recompile with -Xlint:deprecation for details. [javac] Note: Some input files use unchecked or unsafe operations. [javac] Note: Recompile with -Xlint:unchecked for details. createVersionPropFile: [mkdir] Created dir: /scratch/ISS/shin14/repos/apache-cassandra-2.0.8-src-0713/src/resources/org/apache/cassandra/config [propertyfile] Creating new property file: /scratch/ISS/shin14/repos/apache-cassandra-2.0.8-src-0713/src/resources/org/apache/cassandra/config/version.properties [copy] Copying 3 files to /scratch/ISS/shin14/repos/apache-cassandra-2.0.8-src-0713/build/classes/main build: BUILD SUCCESSFUL Total time: 32 seconds

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  • Can't access server on LAN new Router

    - by RMDan
    Earlier this week my roommates decided to change the router we are using for our home network. On the old router I had no problems accessing a laptop running Mint Linux over the network(SSH, FTP, and Shared Folders). However I am now not able to connect. I have verified the IP address of my Linux machine has not changed and I have no problems connecting to our NAS(WDMYCLOUD). The new router is a D-Link DIR-868L. PuTTY is giving me a Timed Out error(was giving me a EHOSTUNREACH before). Running Windows 8.1 the connecting laptop, but tried connecting using my phone via SSH did not work either. More information: Can ping the Linux machine from the router but not my computer. Pinging 192.168.0.111 with 32 bytes of data: Reply from 192.168.0.102: Destination host unreachable. Reply from 192.168.0.102: Destination host unreachable. Reply from 192.168.0.102: Destination host unreachable. Reply from 192.168.0.102: Destination host unreachable. Ping statistics for 192.168.0.111: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

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  • Virtual Machines: What components should I upgrade to improve running virtual machines?

    - by joshsvoss
    at work I need to have one or sometimes two instances of a vmware virtual Windows 7 machine running on my real Windows 7 machine. The computer I'm using is Dell Precision 490 from 2009 I believe, possibly earlier. Running Windows 7 ultimate. Problems while running VM's: The entire computer slows down when a vmware instance is running. Pages take a while to react to a scroll, applications take forever to launch, and programs hang both in the virtual machines and on the real one. So, what components should I upgrade to improve this? I guess a more pointed question would be, which components will help the most? Possible options: Getting 8gb of RAM instead of 4gb new graphics card new processors? (Is that really an option?) My intuition tells me it will be a combination of the RAM and graphics card. There is also the possibility that an '09 tower just isn't cut out for vm's and our business should purchase a new tower.

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  • How to deduplicate 40TB of data?

    - by Michael Stauffer
    I've inherited a research cluster with ~40TB of data across three filesystems. The data stretches back almost 15 years, and there are most likely a good amount of duplicates as researchers copy each others data for different reasons and then just hang on to the copies. I know about de-duping tools like fdupes and rmlint. I'm trying to find one that will work on such a large dataset. I don't care if it takes weeks (or maybe even months) to crawl all the data - I'll probably throttle it anyway to go easy on the filesystems. But I need to find a tool that's either somehow super efficient with RAM, or can store all the intermediary data it needs in files rather than RAM. I'm assuming that my RAM (64GB) will be exhausted if I crawl through all this data as one set. I'm experimenting with fdupes now on a 900GB tree. It's 25% of the way through and RAM usage has been slowly creeping up the whole time, now it's at 700MB. Or, is there a way to direct a process to use disk-mapped RAM so there's much more available and it doesn't use system RAM? I'm running CentOS 6.

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