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  • Can VMWare Server 2.0 be useful in Production for easing backups?

    - by Keith Sirmons
    Howdy, Let's run this idea by the group here. I am thinking about using VMWare Server in production to host a 2008 Domain Controller with DHCP and DNS, a 2008 member server with WSUS, some virus software, and other "management" utilities a second 2008 member server with SQL, IIS, and File Shares for a medium business of 50-100 desktops. The reason I am leaning toward Server vs ESXi is for backup purposes. Using ESXi, if I want to backup the VM's, I would need a second server in the office with enough storage availability to hold a copy of the vmdks. I am wondering if putting this virtual environment on top of a basic 2008 server install will allow for easier backups to both tape and/or to offsite storage using JungleDisk. Can a snapshot be triggered easily via a scheduled job? I know this doesn't necessarily handle file level restores, but I want to make sure in a DR situation, we can restore production servers quickly. Does this concept hold water? Would a very minimum install of the 2008 Host remove too many resources from the actual production machines? This would be a new Dell 410 server with 12 GB ram and (6) 600 GB 15K in a RAID 6, Dual Intel Xeon 2.26GHz procs.

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  • Nagios plug-in check_snmp receives NO SNMP data from a CISCO Router

    - by Shehryar
    I have tried setting up Nagios on Ubuntu 10.10, successfully installed and can login to web interface, I am however stuck on configuring snmp or I am doing something wrong here, i have followed various sites / nagios wiki to setup configuration (cfg) files. When I check on the web interface, it gives the following error on one of my cisco router: Current Status: UNKNOWN (for 0d 2h 55m 56s) Status Information: SNMP problem - No data received from host CMD: /usr/bin/snmpget -t 1 -r 5 -m RFC1213-MIB -v 1 [authpriv] 192.168.1.1:161 ifOperStatus.1 On the command-line itself, when I type the following, it just sits there waiting and waiting : sudo /usr/local/nagios/libexec/check_snmp -H 192.168.1.1 -C Routers -o sysUpTime.0 When I type the following command : I get an OK /usr/bin/snmpget -v1 192.168.1.1:161 1.3.6.1.2.1.1.5.0 -c "Routers" I have configured SNMP properly on our cisco device as we can collect SNMP Data via two other monitoring tool (SolarWinds and Manage Engine), we are tempted towards Nagios as its opensource. Will be grateful if someone could assist in rectifying this situation and guide me with setting up nagios to monitor Cisco Routers, Switches and a Few Servers. We want to monitor Bandwidth, cpu utilization, uptime and other necessary counters. Will be grateful for your assistance Thanks for reading Shehryar

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  • How to configure Hyper-V failover cluster to live migrate when dynamic memory runs out?

    - by Matt Johnson
    Appologies in advance that this is not a direct programming question, but I have a feeling that the solution involves custom powershell scripts (maybe), so this is as good a place to ask as any. I maintain a website that has a large Hyper-V cluster for SQL Servers. We are using Windows 2008 R2 SP1, and the new "dynamic memory" feature. I've already ready reviewed the Best Practices Guide, and implemented it's suggested configuration. Everything works well, except that when SQL demand increases memory pressure to expand to more memory than is available on the physical machine, the memory status goes into the "Warning" state and stays there. I assume the hypervisor is using a swapfile on the host to fulfill the memory requirement, thus slowing the virtual machine down. When this happens, there are plenty of other nodes in the cluster that have available resources. I can live-migrate the virtual server over there and everything works, and the warnings go away. Now how can I automate this? I see no menu options in either Hyper-V or the Failover Cluster Manager for performing a migration or shutdown when dynamic memory goes into the warning state. Any ideas about how to script this, or monitor it and invoke the action directly, would be helpful. If the solution involves coding, powershell would be ideal, but I could envison this as a .Net Service that monitors for this state and kicks off the migration request. I just don't know what objects are involved in doing the monitoring or kicking off the live migration. Thanks in advance.

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  • Configuration for a two machine ESXi cluster using VSA to present local storage to VMs

    - by MDMarra
    I'm designing a little vSphere 5 cluster for one of our remote sites. We have some IBM x3650s that have 6x 300GB 10K RPM drives in them, along with dual quad core CPUs and 24GB RAM. Because we use HP P4500 G2s at our primary site, we have licenses available for HP P4000 VSAs. I thought that this would be the perfect opportunity to use them. Below is a basic drawing of what I want to accomplish: I want to run a P4000 VSA on each server and run them in a Network RAID-10 (Lefthand speak for network mirroring, think of it as RAID 1 across nodes or as an active/active storage cluster). I will then present this storage to guests that will run on this mini-cluster. It will be managed by a vCenter Server on our main site. All connections will be GbE with two dedicated to storage. Management and Data will share a pair of connections, since I don't expect there to be high load. These servers are just there to provide directory services, dhcp, printing, etc. Does anyone see anything potentially wrong with this approach? Is this the best way to do this without adding additional dedicated storage heads? Are there any pitfalls in this design, besides the lack of dedicated Data/Mgmt interfaces?

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  • Apache MaxClients reaching max and locking the server

    - by Rodrigo Sieiro
    Hi. I currently have an Apache2 server running with mpm-prefork and mod_php on a OpenVZ VPS with 512M real / 1024M burstable RAM (no swap). After running some tests, I found that the maximum process size Apache gets is 23M, so I've set MaxClients to 25 (23M x 25 = 575 MB, ok for me). I decided to run some load tests on my server, and the results left me puzzled. I'm using ab on my desktop machine requesting the main page from a wordpress blog. When I run ab with 24 concurrent connections, everything seems fine. Sure, CPU goes up, free RAM goes down, and the result is about 2-3s response time per request. But if I run ab with 25 concurrent connections (my server limit), Apache just hangs after a couple of seconds. It starts processing the requests, then it stops responding, CPU goes back to 100% idle and ab times out. Apache log says it reached MaxClients. When this happens, Apache keeps itself locked up with 25 running processes (they're all in "W" if I check server status) and only after the TimeOut setting the processes start to die and the server starts responding again (in my case it's set to 45). My question: is that expected behaviour? Why Apache just dies when it reaches MaxClients? If it works with 24 connections, shouldn't it work with 25, just taking maybe more time to respond each request and queueing up the rest? It sounds kinda strange to me that any kid running ab can alone kill a webserver just by setting the concurrent connections to the servers MaxClients.

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  • Powershell Win32_NetworkAdapterConfiguration Not "seeing" PPP Adapter

    - by Ben
    I am trying to get the IP of a PPP VPN network connection, but Win32_NetworkAdapterConfiguration does not seem to "see" it. If I interrogate all adapters using my script, it will see everything but the PPP VPN adapter. Is there a specific filter or something I need to enable, or do I need a different class? My Script: $colItems = Get-wmiobject Win32_NetworkAdapterConfiguration foreach ($objItem in $colItems) { Write-Host Description: $objItem.Description Write-Host IP Address: $objItem.IPAddress Write-Host "" } Script Output: Description: WAN Miniport (SSTP) IP Address: Description: WAN Miniport (IKEv2) IP Address: Description: WAN Miniport (L2TP) IP Address: Description: WAN Miniport (PPTP) IP Address: Description: WAN Miniport (PPPOE) IP Address: Description: WAN Miniport (IPv6) IP Address: Description: WAN Miniport (Network Monitor) IP Address: Description: Intel(R) PRO/Wireless 3945ABG Network Connection IP Address: 192.168.2.5 Description: WAN Miniport (IP) IP Address: ipconfig /all output: PPP adapter My VPN: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : My VPN Physical Address. . . . . . . . . : DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes IPv4 Address. . . . . . . . . . . : 10.1.8.12(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.255 Default Gateway . . . . . . . . . : 0.0.0.0 DNS Servers . . . . . . . . . . . : 10.1.1.3 10.1.1.2 Primary WINS Server . . . . . . . : 10.1.1.2 Secondary WINS Server . . . . . . : 10.1.1.3 NetBIOS over Tcpip. . . . . . . . : Enabled Wireless LAN adapter Wireless Network Connection: Connection-specific DNS Suffix . : Belkin Description . . . . . . . . . . . : Intel(R) PRO/Wireless 3945ABG Network Connection Physical Address. . . . . . . . . : 00-3F-3C-22-22-22 DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes IPv4 Address. . . . . . . . . . . : 192.168.2.5(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Lease Obtained. . . . . . . . . . : 25 May 2010 20:33:19 Lease Expires . . . . . . . . . . : 22 May 2020 20:33:17 Default Gateway . . . . . . . . . : 192.168.2.1 DHCP Server . . . . . . . . . . . : 192.168.2.1 DNS Servers . . . . . . . . . . . : 192.168.2.1 NetBIOS over Tcpip. . . . . . . . : Enabled Thanks in advance, Ben

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  • NRPE unable to read output, but why?

    - by ticktockhouse
    I have this problem with NRPE, all the stuff I've found so far on the net seems to point me at things I've already tried. # /usr/local/nagios/plugins/check_nrpe -H nrpeclient gives NRPE v2.12 as expected. Running the command by hand (as defined in nrpe.cfg on "nrpeclient", gives the expected response nrpe.cfg: command[check_openmanage]=/usr/lib/nagios/plugins/additional/check_openmanage -s -e -b ctrl_driver=0 bat_charge "Expected response" But if I try to run the command from the Nagios server I get the following: # /usr/local/nagios/plugins/check_nrpe -H comxps -c check_openmanage NRPE: Unable to read output Can anyone think of anywhere else I might have made a mistake with this? I've done the same thing on multiple other servers with no problem. The only difference I can think of with this is that this box is RHEL 5 based, whereas the others are RHEL 4 based. Those two bits above that I've tested are the what most people seem to suggest when people have had this problem. I should mention that I get a weird error in the logs when I restart nrpe: nrpe[14534]: Unable to open config file '/usr/local/nagios/etc/nrpe.cfg' for reading nrpe[14534]: Continuing with errors... nrpe[14535]: Starting up daemon nrpe[14535]: Warning: Daemon is configured to accept command arguments from clients! nrpe[14535]: Listening for connections on port 5666 nrpe[14535]: Allowing connections from: bodbck,combck,nam-bck Even though, it's plainly reading that /usr/local/nagios/etc/nrpe.cfg file to get the stuff it's talking about further down..

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  • Distributed development staff needing a common IP range

    - by bakasan
    I work on a development staff that is geographically distributed, mostly all throughout the state of CA, but several key members also must travel frequently. We rely quite heavily on a 3rd party provider API for a great deal of our subsystems (can't get into who it is or what they do). The 3rd party however is quite stringent on network access and have no notion of a development sandbox. Access is restricted to 2, 3 IP numbers and that's about it. Once we account for our production servers, that leaves us with an IP or two to spare for our dev team--which is still problematic as people's home IP changes, people travel, we have more than 2 devs, etc. Wide IP blocks are not permitted by the 3rd party. Nor will they allow dynamic DNS type services. There is no simple console to swap IPs on the fly either (e.g. if a dev's IP at home changes or they are on the road). As none of us are deep network experts, I'm wondering what our viable options are? Are there such things as 3rd party hosts to VPNs? Generally I think of a VPN as a mechanism to gain access to a home office, but the notion would be a 3rd party VPN that we'd all connect to and we'd register this as an IP origin w/ our 3rd party. We've considered using Amazon EC2 to effectively host a dev environment for each dev and using that to connect. Amazon only gives you so many static IPs however (I believe 5?) so this would only be a stop gap solution until our team size out strips our IP count at Amazon. Those were the only viable thoughts that I had, but again, I'm far from a networking guy. Tried searching for similar threads, but I'm not even sure I know the right vernacular to look around for.

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  • SQL Server 2008 Unique Problem for bring DB Online...

    - by Nai
    This is my error I am facing TITLE: Microsoft.SqlServer.Smo Set offline failed for Database 'Go3D_Retailer ------------------------------ ADDITIONAL INFORMATION: An exception occurred while executing a Transact-SQL statement or batch. (Microsoft.SqlServer.ConnectionInfo) Unable to open the physical file "E:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA\ftrow_Go3D_catalog.ndf". Operating system error 2: "2(failed to retrieve text for this error. Reason: 15105)". Database 'Go3D_Retailer' cannot be opened due to inaccessible files or insufficient memory or disk space. See the SQL Server errorlog for details. ALTER DATABASE statement failed. (Microsoft SQL Server, Error: 5120) Background to this error I've been trying to move my destination logshipping database to another physical server for analysis purposes. Because I do not have active directory set up, I had to hack my process by using the same username/password for both the source and destination servers to get the process to work. Following that, I used this guy's solution to move the destination database to another server. However, this error occurs when I try to bring the database back online. I don't have an E drive on my server and I have no idea why it's trying to open a file from E drive. I have over a 100gb left on my hard disk so it's definitely not a space issue. This sounds like a bug... Any ideas? I'm running SQL Server 2008 Enterprise edition on Windows Server 2008 R2 64bit

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  • Firebird 2.5 Database Corrupt

    - by BrendanH
    We have an issue where a database hangs the server when: a backup is performed (Hangs on a specific table) selecting * or count(1) from a specific table or viewing data that is related to the table (FKs, etc) We could browse the table to a certain point (using IBExpert) however after about 2900 records the machine just spikes and hangs. Performing a gfix -m does not work, and the validation reports back Record level errors = 4 (no matter how many times we run gfix -m, -v, etc. The Firebird.log file reports back these types of messages: Relation has 91631 orphan backversions (9214273 in use) in table BINS (137) - {Which is apparently just a warning} Unable to complete network request to host "MHPLZA1". Error reading data from the connection. INET/inet_error: read errno = 10054 SERVER/process_packet: broken port, server exiting Shutting down the server with 1 active connection(s) to 1 database(s), 0 active service(s) - {If we leave the backup to run while hanging, it eventually logs this error message} The setup is: The table is question has about 7000 records. The Firebird version is 2.5 Classic Server x64 install. The OS is Windows Server 2008. This is a virtual machine (VMWare) running on a massive server. (Does anyone have issues with VMs and Firebird?). We have the same setup running fine on other servers (However they are not virtual machines). Is there anyway to pin point the issue and or the cause?

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  • Page reload needed several times before loading normally

    - by tim peterson
    Sorry my question is so vague I just have no idea where to start in solving it and am quite a novice with servers. Recently my site (an https connection, running on an Amazon EC2 ubuntu apache2.2) has this issue where I need to load the page several times (3-4) before it will load normally without issue. It will then load normally as long as I keep loading pages regularly (every couple seconds). It will stall again if I don't load pages for a few minutes. It has nothing to do with my application because I don't have this problem with the exact same app codebase on my Apache installation on my laptop. The only thing to my knowledge that I changed is that I installed mod_pagespeed https://developers.google.com/speed/pagespeed/mod. However, I have since turned it off by setting my pagespeed.conf to mod_pagespeed off. Unfortunately, that didn't solve the problem. I'm wondering general advice on how to troubleshoot this problem. For instance are there linux commands to check page loading peformance? Also, it looks like I have lots of new error.logs in my /var/log/apache2 directory which i believe weren't there a few months ago. lots of this : error.log RewriteLog.log.24.gz ssl_access.log.40.gz error.log.1 RewriteLog.log.25.gz ssl_access.log.41.gz error.log.10.gz RewriteLog.log.26.gz ssl_access.log.42.gz error.log.11.gz RewriteLog.log.27.gz any thoughts? thank you, tim

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  • Amazon AWS EC2 + Puppet, get Puppet to know AWS instance tags

    - by Piotr Jasiulewicz
    I am having a problem with my AWS deployment, fairly new to AWS and Puppet. So coming to my question - can you distinguish puppet nodes with AWS machine tags or CNAME domains? A little background about the plan: have multiple clusters of machines, one php cluster, one legacy php cluster, one java cluster, one perl cluster control configuration with puppet - still pretty new to puppet but as a developer I like the idea of being able to version control configuration of servers have autoscaling enabled on those clusters - obviously the main benefit of the cloud that makes the much hight cost when it comes to any reasonable performance worth it (those amazon machines are slower than my phone...) deployment controlled by Capistrano, this makes things a lot easier So in AWS you get those super nasty public/private machine dns's... no way you can identify machines on those. In order to easer the problem, seams like AWS want's you to tag everything - so I did. Found a script that makes a CNAME record for each machine with the tag "ShortName" thanks to the Route53 API. Every machine has a ShortName tag that becomes its CNAME, unfortunately puppet still resolves the private dns name. I'd like to have node 'perl-cluster'{} in puppet, anyone any clue ho to achieve this? Thanks

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  • email output of powershell script

    - by Gordon Carlisle
    I found this wonderful script that outputs the status of the current DFS backlog to the powershell console. This works great, but I need the script to email me so I can schedule it to run nightly. I have tried using the Send-MailMessage command, but can't get it to work. Mainly because my powershell skills are very weak. I believe most of the issue revolve around the script using the Write-Host command. While the coloring is nice I would much rather have it email me the results. I also need the solution to be able to specify a mail server since the dfs servers don't have email capability. Any help or tips are welcome and appreciated. Here is the code. $RGroups = Get-WmiObject -Namespace "root\MicrosoftDFS" -Query "SELECT * FROM DfsrReplicationGroupConfig" $ComputerName=$env:ComputerName $Succ=0 $Warn=0 $Err=0 foreach ($Group in $RGroups) { $RGFoldersWMIQ = "SELECT * FROM DfsrReplicatedFolderConfig WHERE ReplicationGroupGUID='" + $Group.ReplicationGroupGUID + "'" $RGFolders = Get-WmiObject -Namespace "root\MicrosoftDFS" -Query $RGFoldersWMIQ $RGConnectionsWMIQ = "SELECT * FROM DfsrConnectionConfig WHERE ReplicationGroupGUID='"+ $Group.ReplicationGroupGUID + "'" $RGConnections = Get-WmiObject -Namespace "root\MicrosoftDFS" -Query $RGConnectionsWMIQ foreach ($Connection in $RGConnections) { $ConnectionName = $Connection.PartnerName.Trim() if ($Connection.Enabled -eq $True) { if (((New-Object System.Net.NetworkInformation.ping).send("$ConnectionName")).Status -eq "Success") { foreach ($Folder in $RGFolders) { $RGName = $Group.ReplicationGroupName $RFName = $Folder.ReplicatedFolderName if ($Connection.Inbound -eq $True) { $SendingMember = $ConnectionName $ReceivingMember = $ComputerName $Direction="inbound" } else { $SendingMember = $ComputerName $ReceivingMember = $ConnectionName $Direction="outbound" } $BLCommand = "dfsrdiag Backlog /RGName:'" + $RGName + "' /RFName:'" + $RFName + "' /SendingMember:" + $SendingMember + " /ReceivingMember:" + $ReceivingMember $Backlog = Invoke-Expression -Command $BLCommand $BackLogFilecount = 0 foreach ($item in $Backlog) { if ($item -ilike "*Backlog File count*") { $BacklogFileCount = [int]$Item.Split(":")[1].Trim() } } if ($BacklogFileCount -eq 0) { $Color="white" $Succ=$Succ+1 } elseif ($BacklogFilecount -lt 10) { $Color="yellow" $Warn=$Warn+1 } else { $Color="red" $Err=$Err+1 } Write-Host "$BacklogFileCount files in backlog $SendingMember->$ReceivingMember for $RGName" -fore $Color } # Closing iterate through all folders } # Closing If replies to ping } # Closing If Connection enabled } # Closing iteration through all connections } # Closing iteration through all groups Write-Host "$Succ successful, $Warn warnings and $Err errors from $($Succ+$Warn+$Err) replications." Thanks, Gordon

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  • fail2ban Error Gentoo

    - by Mark Davidson
    Hi All I've recently setup a new VPS running Gentoo (My first time using the distro so please forgive me is this is a really easy one) and as I've done with other servers installed fail2ban. Setting it up to block the host via iptables, on too many unsuccessful logins with ssh. However I'm getting a strange error that I can't quite solve. When I start fail2ban I get these lines in the error log 2009-11-13 18:02:01,290 fail2ban.jail : INFO Jail 'ssh-iptables' started 2009-11-13 18:02:01,480 fail2ban.actions.action: ERROR iptables -N fail2ban-SSH iptables -A fail2ban-SSH -j RETURN iptables -I INPUT -p tcp --dport ssh -j fail2ban-SSH returned 100 If I try and force a ban these errors show up in the log and the host is not banned 2009-11-13 11:23:26,905 fail2ban.actions: WARNING [ssh-iptables] Ban XXX.XXX.XXX.XXX 2009-11-13 11:23:26,929 fail2ban.actions.action: ERROR iptables -n -L INPUT | grep -q fail2ban-SSH returned 100 2009-11-13 11:23:26,930 fail2ban.actions.action: ERROR Invariant check failed. Trying to restore a sane environment 2009-11-13 11:23:27,007 fail2ban.actions.action: ERROR iptables -N fail2ban-SSH iptables -A fail2ban-SSH -j RETURN iptables -I INPUT -p tcp --dport ssh -j fail2ban-SSH returned 100 2009-11-13 11:23:27,016 fail2ban.actions.action: ERROR iptables -n -L INPUT | grep -q fail2ban-SSH returned 100 2009-11-13 11:23:27,016 fail2ban.actions.action: CRITICAL Unable to restore environment My versions are as follows Linux masked 2.6.18-xen-r12 #2 SMP Wed Mar 4 11:45:03 GMT 2009 x86_64 Intel(R) Xeon(R) CPU E5504 @ 2.00GHz GenuineIntel GNU/Linux net-analyzer/fail2ban-0.8.4 net-firewall/iptables-1.4.3.2 If anyone could shead some light on these errors that would be great, I did wonder if it was a problem with iptables or some kernel modules but I can block an IP if I do. iptables -I INPUT -s 25.55.55.55 -j DROP so makes me think its something a bit more unusual. Thanks a lot in advance

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  • How to setup DNS server behind a VPN

    - by Brian
    I want to host some websites behind a VPN and I need some help with the finer points of the configuration. Thus far I've settled on OpenVPN + Bind9 and I want to configure the domains like this: External DNS mail.example.com www.example.com vpn.example.com I want to be able to connect to the vpn using 'vpn.example.com'. Once connected I then want to be able to resolve anything which is '*.vpn.example.com' with the DNS server sitting behind the VPN. I know that OpenVPN can push DNS servers to clients when they connect. I am having trouble though with the DNS config, both internal and external. I've gone through a few tutorials etc. and tried to reason about it myself but I'm not getting anywhere. So my main question would be does the above configuration make sense? If so, any general pointers or examples would be greatly appreciated. Here's what I've tried so far based on this tutorial (I've redacted my domain with example.com). When I try the tests with dig at the end to check the resolution is working it fails. db.vpn.example.com $TTL 15m vpn.example.com. IN SOA ns.vpn.example.com. [email protected]. ( 2009010910 ;serial 900 ;refresh 900 ;retry 900 ;expire 900 ;minimum TTL ) vpn.example.com. IN NS ns.vpn.example.com. ns IN A 192.168.0.2 test IN A 192.168.0.2

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  • Openfiler iSCSI performance

    - by Justin
    Hoping someone can point me in the right direction with some iSCSI performance issues I'm having. I'm running Openfiler 2.99 on an older ProLiant DL360 G5. Dual Xeon processor, 6GB ECC RAM, Intel Gigabit Server NIC, SAS controller with and 3 10K SAS drives in a RAID 5. When I run a simple write test from the box directly the performance is very good: [root@localhost ~]# dd if=/dev/zero of=tmpfile bs=1M count=1000 1000+0 records in 1000+0 records out 1048576000 bytes (1.0 GB) copied, 4.64468 s, 226 MB/s So I created a LUN, attached it to another box I have running ESXi 5.1 (Core i7 2600k, 16GB RAM, Intel Gigabit Server NIC) and created a new datastore. Once I created the datastore I was able to create and start a VM running CentOS with 2GB of RAM and 16GB of disk space. The OS installed fine and I'm able to use it but when I ran the same test inside the VM I get dramatically different results: [root@localhost ~]# dd if=/dev/zero of=tmpfile bs=1M count=1000 1000+0 records in 1000+0 records out 1048576000 bytes (1.0 GB) copied, 26.8786 s, 39.0 MB/s [root@localhost ~]# Both servers have brand new Intel Server NIC's and I have Jumbo Frames enabled on the switch, the openfiler box as well as the VMKernel adapter on the ESXi box. I can confirm this is set up properly by using the vmkping command from the ESXi host: ~ # vmkping 10.0.0.1 -s 9000 PING 10.0.0.1 (10.0.0.1): 9000 data bytes 9008 bytes from 10.0.0.1: icmp_seq=0 ttl=64 time=0.533 ms 9008 bytes from 10.0.0.1: icmp_seq=1 ttl=64 time=0.736 ms 9008 bytes from 10.0.0.1: icmp_seq=2 ttl=64 time=0.570 ms The only thing I haven't tried as far as networking goes is bonding two interfaces together. I'm open to trying that down the road but for now I am trying to keep things simple. I know this is a pretty modest setup and I'm not expecting top notch performance but I would like to see 90-100MB/s. Any ideas?

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  • Time drift in Cloud Server - need to mainpulate GRUB config

    - by Aditya Advani
    We are hosting a VPS on a popular host and are experiencing a regular time drift of several minutes a day forward (approx 7). Linux Kernel: 2.6.18-164.11.1.el5 GNU/Linux Distro: CentOS release 5.4 (Final) We reached out to our hosting provider and their support advised us " This is a known issue with Cloud Servers. To fix this you will need to add one line to your grub config located at: /boot/grub/menu.lst The line you need to add is: noapic nolapic divider=10 nolapic_timer This should correct this issue. You will need to restart after this is added in. " Because I am wary of manipulating grub, mostly I'm terrified that our server may fail to restart - I ask you guys, the pro *nix admins - where exactly in this file does the recommended insertion below: # line from 1&1 for time syncing issue (Case 5163) noapic nolapic divider=10 nolapic_timer go? Please specify where exactly, and whether the order of commands is or is not important. Why is the block below "title CentOS ..." indented? If someone could give me an overview of how this works or point me to a resource that's easy to follow, that's what I'm looking for immediately, a light overview or basic understanding of what I;m doing. If GRUB and bootloaders are a deep dark treasure trove of kernel hacking or something, that's great well-recommended in-depth resources are also very welcome. This is my current /boot/grub/menu.lst # grub.conf generated by anaconda # # Note that you do not have to rerun grub after making changes to this file #boot=/dev/sda # serial --unit=0 --speed=57600 terminal --timeout=5 serial console timeout=5 title CentOS (2.6.18-164.11.1.el5) root (hd0,0) kernel /boot/vmlinuz-2.6.18-164.11.1.el5 ro root=/dev/hda1 console=tty0 console=tty initrd /boot/initrd-2.6.18-164.11.1.el5.img MOST IMPORTANT: I need to know where in the file above it is appropriate to paste the suggested line so I can confidently restart my VPS after manipulating GRUB config

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  • Xen HVM networking wont work

    - by Nathan
    I'm trying to get a Xen HVM network working using route however I am failing. Xen PV works fine using Ubuntu but when installing Ubuntu on HVM it fails to pick up the network. I'll let you know now that I'm not that experienced with Xen so I would appreciate any help. vm104 is the HVM thats causing me the problems, here is the configs that I believe should help resolve the problem. [root@eros vm104]# cat vm104.cfg import os, re arch = os.uname()[4] if re.search('64', arch): arch_libdir = 'lib64' else: arch_libdir = 'lib' kernel = '/usr/lib/xen/boot/hvmloader' builder = 'hvm' memory = 6000 shadow_memory = '8' cpu_weight = 256 name = 'vm104' vif = ['type=ioemu, ip=85.25.x.y, vifname=vifvm104.0, mac=00:16:3e:52:3d:fe, bridge=xenbr0'] acpi = 1 apic = 1 vnc = 1 vcpus = 4 vncdisplay = 3 vncviewer = 0 vncconsole = 1 vnclisten = '217.118.x.y' vncpasswd = 'kCfb5S4tE7' serial = 'pty' disk = ['phy:/dev/vpsvg/vm104_img,hda,w', 'file:/home/solusvm/xen/iso/Windows-Server-2008-RC2.iso,hdc:cdrom,r'] device_model = '/usr/' + arch_libdir + '/xen/bin/qemu-dm' boot = 'cd' sdl = '0' usbdevice = 'tablet' pae=1 [root@eros /]# cat /etc/xen/xend-config.sxp | egrep -v "(^#.*|^$)" (xend-unix-server yes) (xend-unix-path /var/lib/xend/xend-socket) (xend-relocation-hosts-allow '^localhost$ ^localhost\\.localdomain$') (network-script network-route) (vif-script vif-route) (network-script 'network-route netdev=eth0') (dom0-min-mem 256) (dom0-cpus 0) (vnc-listen '0.0.0.0') (vncpasswd '') (keymap 'en-us') The Windows install will not pick up the network - I've tried setting the IP manually by using the Xen servers IP as the gateway and setting the main IP in Windows but no luck. If anyone needs any more information let me know and I appreciate any input!

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  • How do I effectively use WinSCP on my GoDaddy Dedicated Hosting

    - by Scott
    After being told that Virtual Private Servers would not fit the scope of my project, I have timidly entered the world of dedicated hosting. Unfortunately, this is forcing me how to learn the basics of being a Linux server admin. GoDaddy has a master account for the server. When you use SSH, they want you to use "su" to switch to the root user. Thus far, I have been able to do everything I have needed to thus far via the command line as this root user. However, now I need to upload files to my server. I'm used to using WinSCP to upload files. I can use my general server account to view the files but when I try to drag or create files its says that I cannot because I do not have permission to do so. I have researched the WinSCP documentation and it seems that this "su" function is beyond the scope of the program. How am I to grant myself access to upload these files using SSH? Should I create a user with the proper permissions? I'm happy to do this but thus far I have not been able to make sense of what I have found online. I'm going to try and move forward but any help and/or insight is appreciated.

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  • cpanel dns only / rdns questions

    - by Clear.Cache
    I started getting IPs from ARIN directly, instead of the data center I'm colocated at. Now I have to start applying rdns myself for my clients upon request, instead of having the NOC at the DC do this. That is obvious, since I am in full control over the IP delegation and therefore have nameserver authority. The question is, how do I "create" ptr / rdns records for my clients? My current server uses Cpanel / WHM with ns1/ns2.mycompany.com I also applied those as dns nameservers in the ARIN IP's whois record. How do I create rdns for my clients? Should I install Cpanel DNS Only on a entirely separate server and use this method instead? http://layer1.cpanel.net/ If so, how can I seamlessly transition over the dns records to that new dns server, retaining my ns1/ns2.mycompany.com and their ns1 and ns2 IP addresses? Even more important: I have to change the ns1/ns2 IPs to the new ones I retrieve from ARIN. How can this be done, avoiding downtime during the dns transition? On a side note, would it be easier to just install Cpanel DNS Only on a dedicated server and just use dns1.mycompany.com and dns2.mycompany.com with their own dedicated ns1/ns2 IPs from ARIN - and utilize this dns server for customers who request rdns? Would this be a more viable solution than using our current ns1/ns2.mycompany.com Nameservers? Is Cpanel DNS Only a standalone software that does not require Cpanel/WHM on another server? Is it possible to have redundant dns servers setup using this software solely, ns1 on one server and ns2 on another? Thanks.

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  • Microsoft Remote Desktop Services - Android

    - by Matt Rogers
    We have recently started testing Remote Desktop Services. We have deployed the environment using the latest server, Windows Server 2012 R2. We have deployed the Web Access Roles, RD Gateway, Connection Broker Virtualization Host and Session Host. We are running both, Virtual machine-based and Session-based deployments. All of these are working as expected internally and externally when using a Windows workstation as the RDS client, however, the Android client is unable to launch applications. Once you install the app from Google Play you are given a screen to add Remote Resources. After entering the appropriate URL, username and password we see the applications that have been published. Unfortunately, when we attempt to launch an app we get the following error: Connection Error Host not found. Please provide the fully-qualified name or the IP address of the host. We have already entered this information otherwise I don't believe we would be able to see the published applications. I think the error is related to the certificate and how it is being used to connect to the applications. Since this is in our lab environment we have not configured a valid external certificate on the servers and the trusted certificate that is installed on the android tablet points to our internal server / domain name. What I would like to know: Has anyone configured RDS Web Access on Server 2012 R2 and attempted to externally connect an Android or iOS device using the Microsoft supported Remote Desktop client. Are others experiencing the same problem we are? Were you able to resolve the issue? Was it related to the external cert / host name?

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  • Cygwin, ssh, and git on Windows Server 2008

    - by Paul
    Hi everyone. I'm trying to setup a git repository on an existing Windows 2008 (R2) server. I have successfully installed Cygwin & added git and ssh to the packages, and everything works perfectly (thanks to Mark for his article on it). I can ssh to localhost on the server, and I can do git operations locally on the server. When I try to do either from the client, however, I get the "port 22, Bad file number" error. Detailed SSH output is limited to this: OpenSSH_4.6p1, OpenSSL 0.9.8e 23 Feb 2007 debug1: Connecting to {myserver} [{myserver}] port 22. debug1: connect to address {myserver} port 22: Attempt to connect timed out without establishing a connection ssh: connect to host {myserver} port 22: Bad file number Google tells me that this means I'm being blocked, usually, by a firewall. So, double-checked the firewall settings on the server, rule is there allowing port 22 traffic. I even tried turning off the firewall briefly, no change in behavior. I can ssh just fine from that client to other servers. The hosting company swears that there's no other firewalls blocking that server on port 22 (or any other port, they claim, but I find that hard to believe). I have another trouble ticket into them, just in case the first support person was full of it, but meanwhile I wanted to see if anyone could think of anything else it can be. Thanks, Paul

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  • How to fix a Postfix/MySQL/Dovecot Unknown Host Issue?

    - by thiesdiggity
    I am having an issue with one of my Postfix/Dovecot mail servers and I'm unsure how to fix the problem. I will try to explain it in detail, here it goes: I have an Ubuntu server setup using Virtual hosting with Postfix, Dovecot and MySQL. We have one domain setup as a virtual domain, for this example I am going to use mail.example.com. Under that domain we have one email address. I have another server (MS Exchange) setup using another one of my sub-domains, ex.example.com. The problem is that when I SMTP into the account on mail.example.com and try to send an email to an account on ex.example.com, I get the email returned back to us with an "unknown host" error. Now, I know that the mail.example.com server can resolve the ex.example.com domain because I can ping/dig while SSH'd into it. I can also log into Postfix via Telnet and send an email to an ex.example.com mailbox. I'm guessing that it has something to do with Postfix/Dovecot looking locally for the domain in the virtual domain list because of the tld domain (example.com)? If that's the case, how do I get Postfix/Dovecot to only look locally for the entire URL (mail.example.com) and if it doesn't find it, send it to the correct server by looking up the MX/A records (which I know exist and are setup correctly)? I have been working on this all day and any guidance would be GREATLY appreciated! Thanks for your time!

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  • Remote NX login to Ubuntu, Gnome can't mount CD/DVD drive

    - by T.J. Crowder
    Even though I'm sitting next to it, I log into my Ubuntu 10.04 LTS system via NX Free Edition from another system at the moment (this is temporary, not worth buying a KVM for). Curiously, though, when I do that Gnome's auto-mounting fails for CD/DVD media (I haven't tried other kinds) with a "Not Authorized" error. For instance here's what happens when I put the Ubuntu 10.04 LTS installation CD in: This does not happen if I log into it locally (not via NX) with the same user account. When using NX, I can mount the media if I go to mount directly: tjc@midnight:~$ sudo mkdir /media/dvd tjc@midnight:~$ sudo mount -r -t iso9660 /dev/sr0 /media/dvd tjc@midnight:~$ ls /media/dvd autorun.inf casper dists install isolinux md5sum.txt pics pool preseed README.diskdefines ubuntu wubi.exe ...which, along with the "not authorized" error, suggests some kind of permissions problem to me (doh). What I find odd is that the same user is involved in both cases (local and via NX). I'm new to Ubuntu on the desktop (used it and other distros on servers for years), so I'm afraid I don't know how this auto-mounting is happening. I think it's handled by the gvfs package and its daemon, but that's about as far as I got (and perhaps I've taken a left turn even getting that far). Although I can work around it with mount, does anyone know how I might get auto-mounting to work?

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  • Lion server profile manager, device enrollment doesn't work

    - by user964406
    I am in the process of setting up Lion Servers profile manager to manage iPads on our local school network. I don't need to manage them while they are outside the network. I have successfully had it working on my personal network. The school network is behind a proxy which we have no control over. I can get the iPads to view the mydevices page and install a trust cert. I have managed to get an iPad to successfully install the remote management profile. After this the profile manager bugs out. It will list the active task of 'new device (sending)' but it's unable to complete the task. If I click on the device on profile manager and try any of the actions out they will all fail to complete. I am using the auto generated certificates and this works if I bring the server and iPad outside of the school network. Shortly after device enrollment the system log on the Lion server reports the following Replaced the actual ip address with INTERNALIP Jun 4 08:40:53 mini sandboxd[760] ([778]): applepushservice(778) deny network-outbound INTERNALIP:8080 Jun 4 08:40:53 mini sandboxd[760] ([778]): applepushservice(778) deny network-outbound INTERNALIP:8080 Jun 4 08:40:53 mini applepushserviced[778]: Got connection error Error Domain=NSPOSIXErrorDomain Code=1 "The operation couldn\u2019t be completed. Operation not permitted" UserInfo=0x7fa483b1a340 {NSErrorFailingURLStringKey=https://albert.apple.com/WebObjects/ALUnbrick.woa/wa/deviceActivation?device=Mac OS, NSErrorFailingURLKey=https://albert.apple.com/WebObjects/ALUnbrick.woa/wa/deviceActivation?device=Mac OS} Jun 4 08:40:53 mini applepushserviced[778]: Failed to get client cert on attempt 2, will retry in 15 seconds Does anyone have any ideas on how to get past this stage? Thanks in advance.

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