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• "Network is unreachable" When pinging google, can connect to internal computers on debian VM

  - by musher

  Similar to this SU question: "Network is unreachable" when attempting to ping google, but internal addresses work Actually, it's pretty much the same base issue. I went through that thread trying to find a solution, I changed my resolv.conf: before: domain [my work domain] search [my work domain] nameserver [my gateway] nameserver [my gateway2] I changed it to: after: domain [my work domain] search [my work domain] nameserver 8.8.8.8 nameserver 8.8.4.4 However, any time I reboot the computer the resolv.conf gets overwritten to the previous version (the 'before' above). The issues began after I installed virtualbox additions, X server and (specifically) LXDE: Cat of apt history.log: Start-Date: 2014-08-21 10:03:42 Commandline: apt-get install virtualbox-guest-utils virtualbox-guest-dkms Install: x11-xkb-utils:amd64 (7.7+1, automatic), libxaw7:amd64 (1.0.12-2, automatic), xfonts-utils:$ End-Date: 2014-08-21 10:03:56 Start-Date: 2014-08-21 10:18:39 Commandline: apt-get install lxde Install: desktop-base:amd64 (7.0.3, automatic), libgoa-1.0-0b:amd64 (3.12.4-1, automatic), lxmenu-d$ End-Date: 2014-08-21 10:21:52 Start-Date: 2014-08-21 10:26:40 Commandline: apt-get upgrade Upgrade: libio-socket-ssl-perl:am ifconfig on the guest: root@Peridot:~# ifconfig eth0 Link encap:Ethernet HWaddr 08:00:27:89:c9:20 og inet addr:172.31.2.102 Bcast:172.31.2.255 Mask:255.255.255.0 inet6 addr: fe80::a00:27ff:fe89:c920/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:2281 errors:0 dropped:1 overruns:0 frame:0 TX packets:463 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:266507 (260.2 KiB) TX bytes:120554 (117.7 KiB) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:4 errors:0 dropped:0 overruns:0 frame:0 TX packets:4 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:240 (240.0 B) TX bytes:240 (240.0 B) The adapter in VBox is a bridged adapter directly onto my ethernet connection; as are my other 2 VMs (which work) Other SU questions I've tried: "connect: Network is unreachable" in VirtualBox VM

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• Why not block ICMP?

  - by Agvorth

  I think I almost have my iptables setup complete on my CentOS 5.3 system. Here is my script... # Establish a clean slate iptables -P INPUT ACCEPT iptables -P FORWARD ACCEPT iptables -P OUTPUT ACCEPT iptables -F # Flush all rules iptables -X # Delete all chains # Disable routing. Drop packets if they reach the end of the chain. iptables -P FORWARD DROP # Drop all packets with a bad state iptables -A INPUT -m state --state INVALID -j DROP # Accept any packets that have something to do with ones we've sent on outbound iptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT # Accept any packets coming or going on localhost (this can be very important) iptables -A INPUT -i lo -j ACCEPT # Accept ICMP iptables -A INPUT -p icmp -j ACCEPT # Allow ssh iptables -A INPUT -p tcp --dport 22 -j ACCEPT # Allow httpd iptables -A INPUT -p tcp --dport 80 -j ACCEPT # Allow SSL iptables -A INPUT -p tcp --dport 443 -j ACCEPT # Block all other traffic iptables -A INPUT -j DROP For context, this machine is a Virtual Private Server Web app host. In a previous question, Lee B said that I should "lock down ICMP a bit more." Why not just block it altogether? What would happen if I did that (what bad thing would happen)? If I need to not block ICMP, how could I go about locking it down more?

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• [tcpdump] Proxy delegate refusing connexion ?

  - by simtris

  Hi guys, I'm a little disapointed ! My aim was to build a VERY simple smtp proxy under debian to handle mail from a port (51234) and forward it to the standard 25 port. I compile and install a "delegate" witch can handle easily that. It's working very well like that : delegated SERVER="smtp://anotherSmtpServer:25" -P51234 The strange thing is, it's working on my virtual test machine and on the dedicated server in local but I can't manage to use it trought internet. I test it like that. telnet [mySrv] 51234 Of course, no firewal, no deny host, no ined/xined, the service delegated is listening on the right port ... 2 clues : The port is answering trought internet with nmap as "51234/tcp open tcpwrapped" have a look at the tcpdump following : 22:50:54.864398 IP [myIp].1699 [mySrv].51234: S 2486749330:2486749330(0) win 65535 22:50:54.864449 IP [mySrv].51234 [myIp].1699: S 2486963525:2486963525(0) ack 2486749331 win 5840 22:50:54.948169 IP [myIp].1699 [mySrv].51234: . ack 1 win 64240 22:50:54.965134 IP [mySrv].43554 [myIp].auth: S 2485396968:2485396968(0) win 5840 22:50:55.243128 IP [myIp] [mySrv]: ICMP [myIp] tcp port auth unreachable, length 68 22:50:55.249646 IP [mySrv].51234 [myIp].1699: F 1:1(0) ack 1 win 46 22:50:55.309853 IP [myIp].1699 [mySrv].51234: . ack 2 win 64240 22:50:55.310126 IP [myIp].1699 [mySrv].51234: F 1:1(0) ack 2 win 64240 22:50:55.310137 IP [mySrv].51234 [myIp].1699: . ack 2 win 46 The part "auth" seems suspect to me but didn't ring a bell. I could certaily do with some help. Thx a lot !

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• VirtualBox doesn't see raw partitions

  - by smbear

  What I want to achieve is to set up virtual machine with VirtualBox. Host OS is Windows 7 Home Premium, guest will be (k)Ubuntu 12.04 on a raw partition. The first problem is that when I issue following command: VBoxManage.exe internalcommands listpartitions -rawdisk \\.\PhysicalDrive0 I get following result: Number Type StartCHS EndCHS Size (MiB) Start (Sect) 1 0xee 0 /0 /1 1023/254/63 715404 1 I'm guessing that VirtualBox is unable to see my partitions. If I use diskpart tool, then all partitions are listed correctly (note Polish language version of Windows): DISKPART> select disk 0 Obecnie wybranym dyskiem jest dysk 0. DISKPART> list partition Partycja ### Typ Rozmiar Przesuniecie ------------- ---------------- ------- ------------ Partycja 1 System 200 MB 1024 KB Partycja 2 Zarezerwowany 128 MB 201 MB Partycja 3 Podstawowy 139 GB 329 MB Partycja 5 Nieznany 4883 KB 140 GB Partycja 6 Podstawowy 50 GB 140 GB Partycja 7 Podstawowy 484 GB 190 GB Partycja 4 Odzyskiwanie 24 GB 674 GB Additional note: my PC is using EFI to boot OS. Basing on the results listed above, I believe that: I messed up with my partition table. Something is wrong with VirtualBox. Can anyone help with this issue?

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• High availability virtual machines

  - by Jeremy

  I've been reading a lot about high availability virtualization, either via Hyper-V or VMWare. In that context, essentially high availabliity means that the VM is hosted by a closter of physical servers (nodes), so if one of the physical servers goes down, the VM can still be served by other physical servers. So far so good, the physical cluster and the VM itself are highly available. However if the service being provided, let's say SQL server, MSDTC, or any other service, are actually being provided by the VM image and the virtualized operating system. So I imagine that there is still a point of failure at the virtual layer that isn't accounted for. Something could happen within the virtual machine itself that the physican cluster can not account for, correct? In that instance the physican failover cluster (Hyper-V) or VMWare host, can not fail over, because the issue is not with one of the servers in the physical cluster - failing over a physical node would not do any good. Does this necessitate building a virtual failover cluster on top of the physical one, or is this not necessary? Alternatively, I suppose you could skip the phsyical clustering, and just cluster at the virtual layer (Child based failover clustering), because that should still survive a physical failure. See image below showing parent based (left), child based (right) and a combination (center). Is parent based as far as you need to go, or is child based more appropriate?

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• need some help figuring out clamav & monit monitoring error...unixsocket...

  - by Ronedog

  I need a bit of help figuring something out. First off, I'm not very well versed with FreeBSD servers, etc. but with some direction hopefully I can get this fixed. I'm using FreeBSD and installed Monit so I could monitor some of the processes that run tomcat, apache, mysql, sendmail, clamav. So far, I'm only successful in getting apache & mysql to be monitored. I'm getting this error for clamav in the log file for /var/log/monit.log 'clamavd' failed, cannot open a connection to UNIX[/usr/local/etc/rc.d/clamav-clamd] My config file for clamav in /etc/monitrc is: #################################################################### # CLAMAV Virus Checks #################################################################### check process clamavd with pidfile /var/run/clamav/clamd.pid group virus start program = "/usr/local/etc/rc.d/clamav-clamd start" stop program = "/usr/local/etc/rc.d/clamav-clamd stop" if failed unixsocket /usr/local/etc/rc.d/clamav-clamd then restart if 5 restarts within 5 cycles then timeout Honestly, I really don't know much of what's going on here. My host who helped me get the box set up basically installed clamav, but doesn't offer this kind of detail in supporting me, so I'm left to figure this stuff out on my own as I own the box, but they provide the isp service. Is there anyone who can help me troubleshoot this? Thanks for your help in advance.

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• How can I use my cell phone to establish a dial-up networking connection?

  - by gWiz

  I am using Windows 7 and have a BlackBerry with T-Mobile (U.S.). I have paired the phone with my computer over Bluetooth, which automatically creates a serial port for it. I am able to open the port in PuTTY and successfully issue AT commands to the modem, including dialing. However, while using Windows to create and establish a Dial-Up Networking connection, I get an error dialog stating "Error 678. The remote computer did not respond." In my testing, I also tried setting up a connection to dial a number connected to a phone. When attempting to connect over this connection, the phone does ring but the very moment I answer the call, my computer displays the above error dialog. What must be done to successfully establish such a PPP connection? Some special AT initialization string perhaps? To clarify, I'm not referring to the well-described and popular technique known as "tethering," in which the remote host of the data link is the mobile service provider. I am interested specifically in establishing direct data links with remote hosts other than my mobile service provider. Think old-school landline connection to your friend's computer or BBS. Edit 1 As grawity pointed out in comments, the missing piece of the puzzle is the actual modulator that is compatible with v-series protocols, which I expected to be built into the cellphone. So far the best only software alternative I could find is this experimental project. Edit 2 Found this forum discussion today. The participants state that there is no old-school modem in the BlackBerry. Edit 3 When I place a call in PuTTY with ATD, immediately after the call is answered (and the callee is initiating the handshake) the cellphone returns OK. This is not the expected behavior for establishing a data connection. The phone should reciprocate the handshake, and upon success return CONNECT. (Alternatively it should return BUSY or NO CARRIER, but never simply OK.) Windows DUN must be interpreting this as the "Error 678" I was seeing.

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• Assign individual NIC to KVM guest

  - by Bin S

  I have a server with 6 NICs installed and is running Ubuntu 12.04LTS. I want to setup 4 guest VMs using kvm. Now I want to assign 2 NICs for the host(1 Public IP and 1 private IP), and 1 NIC each to 4 guest VM(all private IP). How do I do this? /etc/network/interfaces I am having trouble with my configuration file shown below: # The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 iface eth0 inet static address 192.168.1.109 netmask 255.255.255.0 gateway 192.168.1.5 auto eth1 iface eth1 inet static address 192.168.1.117 netmask 255.255.255.0 auto eth2 iface eth2 inet manual auto br0 iface br0 inet static address 192.168.1.118 netmask 255.255.255.0 bridge_ports eth2 bridge_fd 9 bridge_hello 2 bridge_maxage 12 bridge_stp off auto eth3 iface eth3 inet manual auto br1 iface br1 inet static address 192.168.1.119 netmask 255.255.255.0 bridge_ports eth3 bridge_fd 9 bridge_hello 2 bridge_maxage 12 bridge_stp off auto eth4 iface eth4 inet manual auto br2 iface br2 inet static address 192.168.1.123 netmask 255.255.255.0 bridge_ports eth4 bridge_fd 9 bridge_hello 2 bridge_maxage 12 bridge_stp off auto eth5 iface eth5 inet manual auto br3 iface br3 inet static address 192.168.1.124 netmask 255.255.255.0 bridge_ports eth5 bridge_fd 9 bridge_hello 2 bridge_maxage 12 bridge_stp off

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• Login failed for user 'XXX' on the mirrored sql server

  - by hp17

  Hello, We have 4 web servers that host our asp.net (3.5) application. Randomly, we get error messages like : 1) "Login failed for user 'userid'" 2) "A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)" we are running sql2005 and have a principle and a mirror db (sync). When these exceptions are thrown, I look at the SQL error logs on the mirrored db and noticed the failed login messages in there. The principle db is running fine and the other web apps are working great. this will happen for maybe 10 min, then the app pool recycles and it starts hitting the principle db again. Is there a configuration I have incorrect? my theory is that our principle db is forwarding the request to the mirror, but that should never happen. any help??

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• iptables, blocking large numbers of IP Addresses

  - by Twirrim

  I'm looking to block IP addresses in a relatively automated fashion if they look to be 'screen scraping' content from websites that we host. In the past this was achieved by some ingenious perl scripts and OpenBSD's pf. pf is great in that you can provide it nice tables of IP addresses and it will efficiently handle blocking based on them. However for various reasons (before my time) they made the decision to switch to CentOS. iptables doesn't natively provide the ability to block large numbers of addresses (I'm told it wasn't unusual to be blocking 5000+), and I'm a bit cautious over adding that many rules into an iptable. ipt_recent would be awesome for doing this, plus it provides a lot of flexibility for just severely slowing down access, but there is a bug in the CentOS kernel that is stopping me from using it (reported, but awaiting fix). Using ipset would entail compiling a more up-to-date version of iptables than comes with CentOS which whilst I'm perfectly capable of doing it, I'd rather not do from a patching, security and consistency perspective. Other than those two it looks like nfblock is a reasonable alternative. Is anyone aware of other ways of achieving this? Are my concerns about several thousand IP addresses in iptables as individual rules unfounded?

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• Nginx Ubuntu Postfix Config - Can't connect to incoming IMAP server 'server not responding' but can send mail via outgoing using same details?

  - by daveaspinall

  I'm pretty to new server admin and especially nginx but seem to be getting ok fine apart from accessing my mail via my iPhone? I've changed my domain to 'domain.com' The thing is I can send mail via my outgoing IMAP server but can't connect to the incoming one? I just get the message "the mail server at mail.domain.com is not responding" /etc/postfix/main.cf alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases append_dot_mydomain = no biff = no broken_sasl_auth_clients = yes config_directory = /etc/postfix home_mailbox = Maildir/ inet_interfaces = all inet_protocols = all mailbox_command = mailbox_size_limit = 0 mydestination = domain.com, mail.domain.com, localhost.com, , localhost, localhost.localdomain mydomain = domain.com myhostname = mail.domain.com mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 myorigin = /etc/mailname recipient_delimiter = + relayhost = smtp_tls_note_starttls_offer = yes smtp_tls_security_level = may smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination smtpd_sasl_auth_enable = yes smtpd_sasl_local_domain = smtpd_sasl_security_options = noanonymous smtpd_tls_CAfile = /etc/ssl/certs/cacert.pem smtpd_tls_auth_only = no smtpd_tls_cert_file = /etc/ssl/certs/smtpd.crt smtpd_tls_key_file = /etc/ssl/private/smtpd.key smtpd_tls_loglevel = 1 smtpd_tls_received_header = yes smtpd_tls_security_level = may smtpd_tls_session_cache_timeout = 3600s tls_random_source = dev:/dev/urandom telnet localhost 25 ehlo locahost 250-mail.domain.com 250-PIPELINING 250-SIZE 10240000 250-VRFY 250-ETRN 250-STARTTLS 250-AUTH LOGIN PLAIN 250-AUTH=LOGIN PLAIN 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN Using the following details to connect: username password hostname: mail.domain.com port: 25 iptables --list Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination I also sent mail to the server as a test and got this missage if it helps? Technical details of temporary failure: [mail.domain.com. (10): Connection refused] I also looked in /var/log/mail.log and it has multiple entries of: postfix/smtpd[12239]: connect from 5acefc9a.bb.sky.com[90.206.252.xxx] Mar 23 06:47:09 new-domain postfix/smtpd[12239]: lost connection after CONNECT from 5acefc9a.bb.sky.com[90.206.252.154] Notice new-domain which is incorrect but the server hostname and hostname in the configs are correct? I recently moves servers and the host has set the primary domain on the service as new-domain.com so this may be the issue? Like I said, it works to connect to outgoing server, but incoming gets the not responding error? Any idea would be much appreciated!

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• Application Pool Identity corruption

  - by Gavin Osborn

  I have observed a few times while deploying software into IIS that every now and again the related Application Pools fail to restart and in the Event Log we see an error like the following: The identity of application pool, 'AppPoolName' is invalid. If it remains invalid when the first request for the application pool is processed, the application pool will be disabled. This does not happen frequently but when it does the only solution is to re-apply the Identity password in the IIS Manager Window. As soon as I re-apply and then restart the application pool the web sites come back up. Facts: The account is a service account whose password never expires. The account is local to the IIS host. The account password is never changed. This is IIS 6 running on Windows Server 2003 Deployment of the software is via MSI and involves several IIS Resets. The software is created in house and does not do anything fancy to IIS. Any ideas how the identity information might become corrupt? Edit: Clarification To be clear - this user account and password combination work absolutely fine and usually works fine as the Identity of the Application Pool. It is only when we deploy updates of our software into an existing IIS application that it stops working. Our password has not changed Our deployment does not change the password or reconfigure the application pools. This does not happen every time, 1/20 times perhaps. If we re-enter the password into IIS and restart the App Pools everything works.

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• Safe use of Update-FormatData?

  - by Steve B

  In a custom PowerShell module, I have at the top of my module definition this code: Update-FormatData -AppendPath (Join-Path $psscriptroot "*.ps1xml") This is working fine as all .ps1xml files are loaded. However, the module is sometimes loaded using Import-Module MyModule -Force (actually, this is in the install script of the module). In this case, the call to Update-FormatData fails with this error : Update-FormatData : There were errors in loading the format data file: Microsoft.PowerShell, c:\pathto\myfile.Types.ext.ps1xml : File skipped because it was already present from "Microsoft.PowerShell". At line:1 char:18 + Update-FormatData <<<< -AppendPath "c:\pathto\myfile.Types.ext.ps1xml" + CategoryInfo : InvalidOperation: (:) [Update-FormatData], RuntimeException + FullyQualifiedErrorId : FormatXmlUpateException,Microsoft.PowerShell.Commands.UpdateFormatDataCommand Is there a way to safely call this command? I know I can call Update-FormatData with no parameters, and it will update any known .ps1xml file, but this would work only if the file has already been loaded. Can I list somewhere the loaded format data files? Here is a bit of background: I'm building a custom module that is installed using a script. The install script looks like : [CmdletBinding(SupportsShouldProcess=$true,ConfirmImpact="High")] param() process { $target = Join-Path $PSHOME "Modules\MyModule" if ($pscmdlet.ShouldProcess("$target","Deploying MyModule module")) { if(!(Test-Path $target)) { new-Item -ItemType Directory -Path $target | Out-Null } get-ChildItem -Path (Split-Path ((Get-Variable MyInvocation -Scope 0).Value).MyCommand.Path) | copy-Item -Destination $target -Force Write-Host -ForegroundColorWhite @" The module has been installed. You can import it using : Import-Module MyModule Or you can add it in your profile ($profile) "@ Write-Warning "To refresh any open PowerShell session, you should run ""Import-Module MyModule -Force"" to reload the module" Import-Module MyModule -Force Write-Warning "This session has been refreshed." } } MyModule defines, as first statement, this line : Update-FormatData -AppendPath (Join-Path $psscriptroot "*.ps1xml") As I updated my $profile to always load this module, the Update-Path command has been called when I run the install script. In the install script, I force import the module, which be fire again the module, and then, the Update-Path call

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• Windows 7 can't find Ubuntu computer by hostname

  - by endolith

  I got a new Windows 7 machine, and was using VNC, SSH etc to connect to my Ubuntu machine, and it worked fine previously connecting to the Ubuntu computer's hostname. Now it doesn't work if I use the machine's hostname, but it does if I use the local IP or DynDNS name. I can also access it from my Android phone using the local hostname over SSH. If I try to connect with SSH to the hostname, it says "Host does not exist". VNC says "Failed to get server address". NX says "no address associated with name", and I don't see it in Windows' "Network" folder. I've rebooted everything. I've turned off Windows firewall. It was working fine a few days ago, but now it's not. How do I figure out what's blocking it? Aha: It probably has something to do with Samba. I reset the Samba configuration the other day, and apparently this can affect it. http://ubuntu-virginia.ubuntuforums.org/showthread.php?t=1558925 I tried commenting out "encrypt passwords = No" as described there, but it still doesn't work.

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• RAID degraded on Ubuntu server

  - by reano

  We're having a very weird issue at work. Our Ubuntu server has 6 drives, set up with RAID1 as follows: /dev/md0, consisting of: /dev/sda1 /dev/sdb1 /dev/md1, consisting of: /dev/sda2 /dev/sdb2 /dev/md2, consisting of: /dev/sda3 /dev/sdb3 /dev/md3, consisting of: /dev/sdc1 /dev/sdd1 /dev/md4, consisting of: /dev/sde1 /dev/sdf1 As you can see, md0, md1 and md2 all use the same 2 drives (split into 3 partitions). I also have to note that this is done via ubuntu software raid, not hardware raid. Today, the /md0 RAID1 array shows as degraded - it is missing the /dev/sdb1 drive. But since /dev/sdb1 is only a partition (and /dev/sdb2 and /dev/sdb3 are working fine), it's obviously not the drive that's gone AWOL, it seems the partition itself is missing. How is that even possible? And what could we do to fix it? My output of cat /proc/mdstat: Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md1 : active raid1 sda2[0] sdb2[1] 24006528 blocks super 1.2 [2/2] [UU] md2 : active raid1 sda3[0] sdb3[1] 1441268544 blocks super 1.2 [2/2] [UU] md0 : active raid1 sda1[0] 1464710976 blocks super 1.2 [2/1] [U_] md3 : active raid1 sdd1[1] sdc1[0] 2930133824 blocks super 1.2 [2/2] [UU] md4 : active raid1 sdf2[1] sde2[0] 2929939264 blocks super 1.2 [2/2] [UU] unused devices: <none> FYI: I tried the following: mdadm /dev/md0 --add /dev/sdb1 But got this error: mdadm: add new device failed for /dev/sdb1 as 2: Invalid argument Output of mdadm --detail /dev/md0 is: /dev/md0: Version : 1.2 Creation Time : Sat Dec 29 17:09:45 2012 Raid Level : raid1 Array Size : 1464710976 (1396.86 GiB 1499.86 GB) Used Dev Size : 1464710976 (1396.86 GiB 1499.86 GB) Raid Devices : 2 Total Devices : 1 Persistence : Superblock is persistent Update Time : Thu Nov 7 15:55:07 2013 State : clean, degraded Active Devices : 1 Working Devices : 1 Failed Devices : 0 Spare Devices : 0 Name : lia:0 (local to host lia) UUID : eb302d19:ff70c7bf:401d63af:ed042d59 Events : 26216 Number Major Minor RaidDevice State 0 8 1 0 active sync /dev/sda1 1 0 0 1 removed

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• DPM server 2010 Attach agent error : administrator privileges missing?

  - by Michael

  I’m hoping you would be able to help me out with this little problem I’m having. I installed DPM 2010 in our test environment to test backups on Exchange 2010 servers. The environment includes : 1xDC 2x Exchange Server 2010 1x DPM 2010 server All of these are running on Microsoft server 2008 R2 Virtual machines. The host machines are using Hyper-v. So the problem goes like this : 1- I tried to install the agents from the DPM server GUI, which failed saying I didn’t have the correct permissions. 2- So then I tried the manual installation using the commands from : the Microsoft site http://technet.microsoft.com/en-us/library/bb870935.aspx 3- The agent installation worked but when I get to attaching the agents to the DPM server it still gives me the error saying that the specified account does not have administrator rights. 4- I tried the Domain admin, users who are domain admin + local admin, single local admins. 5- I have turned off the windows firewall and made sure all the services are running. So now I’m out of ideas and really need help, the agent attach to the DPM server is the last thing that is holding me back from deploying everything to the production site. Any help would be really appreciated.

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• Delayed internet access

  - by Joel Coel

  When I (and presumably my users) first start up or log in to my computer I can't get internet access until several minutes after logging in. Internet pages like serverfault.com will time out. During this time I can access internal web servers. Sometimes pinging the gateway seems to fix the problem. I'm using Windows 7 on this machine with wifi, and the problem seems limited to the wifi network, which is on a separate vlan. The wired network does not share the problem, but I know it's not the wifi connection itself because the internal sites work. The wifi access point is attached to a 3Com 4200 switch, with the port set for vlan 2 untagged, vlan 1 tagged. The 4200 has a fiber connection to a 3Com 4900SX fiber switch that acts almost as a router here. The fiber connection is vlan 1 untagged vlan 2 tagged at both ends. The gateway is then attached to a different 4200 (vlan 1 untagged, vlan 2 tagged) that has a similar fiber connection to the 4900SX. vlan 2 has 192.168.8.0/22 IPs, vlan 1 has 10.1.0.0/16 IPs. The 4900SX has an interface for both vlans (10.1.1.1/192.168.8.1), as does the gateway (10.1.1.5/192.168.8.5). There is one dchp server for both vlans on the same switch as the gateway. It chooses a dhcp scope based on the interface used by the 4900sx to forward the dhcp request. There is also a network access list on the 4900sx set to deny all vlan2 traffic to any 10.1.x.x host, with exceptions made for a few servers, including dhcp, 4900sx, and the gateway. I think that about covers it. Any ideas on why internet access would be delayed like this?

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• Windows 8 using as a webserver

  - by Jason

  I have a few hobby websites that I currently host on CentOS 6. Apache, mail serving, PHP, MySQL nothing special. In the past I used Windows XP to do this same task, for years, and I was OK. I switched to Linux and for the last few years it has been such a pain. updates break, certain apps only support certain distros without compiling from source. It prevents me from working on my hobby sites more because I am always fixing something. With Windows I locked it down, I run a hardware firewall and packet analyser, kept up on updates and A/V and never had a problem. I dont allow RDC from outside the local LAN, no FTP open, run OpenSSH on an obscure port.. I am considering switching to Windows 8 (since it is a cheaper license now that Windows 7) and running apache, HMailServer, PHP, MySQL, just like my CentOS install. My questions: I am not familiar with Windows 8, can the above be done like XP? No new security restrictions or the OS preventing this from happening? The machine is a Athlon 64-bit X2 with 32GB of RAM. Will Windows 8 see all of the RAM? Technically the machine came with Windows 7, and there is a serial number on it but I am sure I wiped away the Windows 7 recovery partition when I switched to Linux....

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• Computing Number of Bits in Public Key

  - by eb80

  I am working with DKIM and trying to compute the public key size of some DKIM signatures. I know from tools that Gmail's is now 2048, but how could I have figured this out myself (i.e., what exact Linux commands and why)? user@host$ dig txt 20120113._domainkey.gmail.com ; <<>> DiG 9.8.3-P1 <<>> txt 20120113._domainkey.gmail.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 52228 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;20120113._domainkey.gmail.com. IN TXT ;; ANSWER SECTION: 20120113._domainkey.gmail.com. 300 IN TXT "k=rsa\; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1Kd87/UeJjenpabgbFwh+eBCsSTrqmwIYYvywlbhbqoo2DymndFkbjOVIPIldNs/m40KF+yzMn1skyoxcTUGCQs8g3FgD2Ap3ZB5DekAo5wMmk4wimDO+U8QzI3SD0" "7y2+07wlNWwIt8svnxgdxGkVbbhzY8i+RQ9DpSVpPbF7ykQxtKXkv/ahW3KjViiAH+ghvvIhkx4xYSIc9oSwVmAl5OctMEeWUwg8Istjqz8BZeTWbf41fbNhte7Y+YqZOwq1Sd0DbvYAD9NOZK9vlfuac0598HY+vtSBczUiKERHv1yRbcaQtZFh5wtiRrN04BLUTD21MycBX5jYchHjPY/wIDAQAB" ;; Query time: 262 msec ;; SERVER: 8.8.8.8#53(8.8.8.8) ;; WHEN: Mon Nov 19 10:52:06 2012 ;; MSG SIZE rcvd: 462

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• Instructions to setup primary and only domain controller

  - by Robert Koritnik

  Where could I get best step by step instructions (with some simple explanations) how to setup domain controller on Windows Server 2008 R2 Server Core? I don't know what do I need? Do I need DNS as well and AD and so on and so forth. I don't know enough about these things, but I need to set them up to prepare development environment. I would also like to know how to configure firewall on DC machine, to make it visible on other machines because I've setup DC somehow but I can't connect to it... This is my HW config: Linksys internet router with DHCP my dev machine is Windows 7 my DC machine is a VM in my dev machine my dev machine has a hw network adapter to linksys and a virtual network adapter to DC DC machine has two network adapters: one to linksys (to be internet connected so it can be updated etc.) and one to host (my dev Win7 machine) Edit My development machine should access domain controller and logon using domain credentials. Development machine would access internet directly via Linksys router. My domain controller machine would only serve authentication (and if I'm able to configure it right) should also have Active Directory Federation Services in a workable condition. I hope this is a bit more clear now. At least a small bit.

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• Setting up Web server so it is easy to migrate

  - by Nyxynyx

  Hi I am about to move my site from a VPS to another host's dedicated server. One of my concern is about scaling the site in the future that involves a change of server. Now that I am starting the dedicated server from scratch with only the OS, this means that I need to install the web server stack, including Apache and its mods, PHP, MySQL, PostgreSQL, Tomcat, Solr and a few other softwares like ImageMagick and git. Question: Is there a way for me to setup this new dedicated server such that I can easily migrate the entire site, both the technology stack and the code to the a newer server (upgrade from this new dedicated server) easily without reinstalling and reconfiguring everything? The code for the website is being handled by git and github so thats not a problem. I'm more conerned about the rest of the software required. Side question: The current VPS uses CentOs with cpanel and it seems that many packages are outdated on yum and cpanel interfers with the installation of many packages. Which OS should I go with for the new server? Ubuntu?

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• 404 with serving static files in a custom nginx configuration

  - by code90

  In my nginx configuration, I have the following: location /admin/ { alias /usr/share/php/wtlib_4/apps/admin/; location ~* .*\.php$ { try_files $uri $uri/ @php_admin; } location ~* \.(js|css|png|jpg|jpeg|gif|ico|pdf|zip|rar|air)$ { expires 7d; access_log off; } } location ~ ^/admin/modules/([^/]+)(.*\.(html|js|json|css|png|jpg|jpeg|gif|ico|pdf|zip|rar|air))$ { alias /usr/share/php/wtlib_4/modules/$1/admin/$2; } location ~ ^/admin/modules/([^/]+)(.*)$ { try_files $uri @php_admin_modules; } location @php_admin { if ($fastcgi_script_name ~ /admin(/.*\.php)$) { set $valid_fastcgi_script_name $1; } fastcgi_pass $byr_pass; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME /usr/share/php/wtlib_4/apps/admin$valid_fastcgi_script_name; fastcgi_param REDIRECT_STATUS 200; include /etc/nginx/fastcgi_params; } location @php_admin_modules { if ($fastcgi_script_name ~ /admin/modules/([^/]+)(.*)$) { set $byr_module $1; set $byr_rest $2; } fastcgi_pass $byr_pass; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME /usr/share/php/wtlib_4/modules/$byr_module/admin$byr_rest; fastcgi_param REDIRECT_STATUS 200; include /etc/nginx/fastcgi_params; } Following is the requested url which ends up with "404": http://www.{domainname}.com/admin/modules/cms/styles/cms.css Following is the error log: [error] 19551#0: *28 open() "/usr/share/php/wtlib_4/apps/admin/modules/cms/styles/cms.css" failed (2: No such file or directory), client: xxx.xxx.xxx.xxx, server: {domainname}.com, request: "GET /admin/modules/cms/styles/cms.css HTTP/1.1", host: "www.{domainname}.com" Following urls works fine: http://www.{domainname}.com/admin/modules/store/?a=manage http://www.{domainname}.com/admin/modules/cms/?a=cms.load Can anyone see what the problem could be? Thanks. PS. I am trying to migrate existing sites from apache to nginx.

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• Setting up /etc/network/interface file for KVM ubuntu 10.10

  - by Charles Thornton

  I am trying to setup KVM on Unbuntu 10.10 IFCONFIG DUMP: hydra(~}$ifconfig eth0 Link encap:Ethernet HWaddr 00:1b:fc:cb:77:eb inet addr:172.20.20.3 Bcast:172.20.20.255 Mask:255.255.255.0 inet6 addr: fe80::21b:fcff:fecb:77eb/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1345 errors:0 dropped:0 overruns:0 frame:0 TX packets:1541 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:820414 (820.4 KB) TX bytes:317708 (317.7 KB) Interrupt:23 Base address:0xc000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:8 errors:0 dropped:0 overruns:0 frame:0 TX packets:8 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:480 (480.0 B) TX bytes:480 (480.0 B) virbr0 Link encap:Ethernet HWaddr 0a:1e:fb:b4:77:84 inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0 inet6 addr: fe80::81e:fbff:feb4:7784/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:56 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 B) TX bytes:8934 (8.9 KB) hydra(~}$ QUESTION:: How should /etc/network/interfaces be setup?? The following attempt just kills my internet connection! --------- /etc/network/interfaces ------------- # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 iface eth0 inet manual auto br0 iface br0 inet static address 172.20.20.3 netmask 255.255.255.0 network 172.20.20.0 broadcast 172.20.20.255 gateway 172.20.20.1 bridge_ports eth0 bridge_fd 9 bridge_hello 2 bridge_maxage 12 bridge_stp off What am I doing wrong????

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• Unable to ssh in Beagle Bone Black

  - by SamuraiT

  I wanted to install pip onto beagle bone black,and I tried this: /usr/bin/ntpdate -b -s -u pool.ntp.org opkg update && opkg install python-pip python-setuptools then, it threw errors,but Unfortunately, I didn't log that errors. it was occurred a week ago and was't solved yet. I wanted to solve it now and I tried connect by ssh,but I failed. When I ping to beagle bone, it responds, and Cloud9 IDE is working too but not ssh. I don't think this is serious problem since I can connect to beagle bone by other methods: Cloud9 or so. However, to use python on beagle bone, I need to connect by ssh. Before trying to update and install python-pip, I could connect by ssh. Do you have any ideas to solve this connection problem? note I use default OS: Angstrom I don't use SD card. HOST PC is mac, OS.X 10.9 connect by USB serial I checked this but this wasn't helpful http://stackoverflow.com/questions/19233516/cannot-connect-to-beagle-bone-black I could connect by GateOne SSH client, but still unable to connect from terminal.

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• Puppet write hosts using api call

  - by Ben Smith

  I'm trying to write a puppet function that calls my hosting environment (rackspace cloud atm) to list servers, then update my hosts file. My get_hosts function is currently this: require 'rubygems' require 'cloudservers' module Puppet::Parser::Functions newfunction(:get_hosts, :type => :rvalue) do |args| unless args.length == 1 raise Puppet::ParseError, "Must provide the datacenter" end DC = args[0] USERNAME = DC == "us" ? "..." : "..." API_KEY = DC == "us" ? "..." : "..." AUTH_URL = DC == "us" ? CloudServers::AUTH_USA : CloudServers::AUTH_UK DOMAIN = "..." cs = CloudServers::Connection.new(:username => USERNAME, :api_key => API_KEY, :auth_url => AUTH_URL) cs.list_servers_detail.map {|server| server.map {|s| { s[:name] + "." + DC + DOMAIN => { :ip => s[:addresses][:private][0], :aliases => s[:name] }}} } end end And I have a hosts.pp that calls this and 'should' write it to /etc/hosts. class hosts::us { $hosts = get_hosts("us") hostentry { $hosts: } } define hostentry() { host{ $name: ip => $name[ip], host_aliases => $name[aliases] } } As you can imagine, this isn't currently working and I'm getting a 'Symbol as array index at /etc/puppet/manifests/hosts.pp:2' error. I imagine, once I've realised what I'm currently doing wrong there will be more errors to come. Is this a good idea? Can someone help me work out how to do this?

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