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  • Cause of slow download speed on a particular EC2 instance?

    - by James
    I have a networking issue I'm trying to solve. I have two EC2 instances, same zone, same type. On one of the two EC2 instances (the 'bad' instance), the download speed is really poor (200k/s), while on the other (the 'good' instance), the download speed is fine, comfortable at 30M/s +). To clarify, I'm talking about downloading files to the EC2 instance while ssh'd into the server, e.g running wget with a large file. I've tried different files, including S3 objects and a large linux ISO from elsewhere. Running ethtool eth0 only returns 'Link detected: yes' for both. When running ifconfig, both return the same for most part, aside from how the good instance shows no error packets yet the bad instance shows many: UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:168372370 errors:5075643 dropped:0 overruns:0 frame:0 TX packets:122116480 errors:0 dropped:0 overruns:0 carrier:0 Both servers are configured the same, at least were supposed to be. How can I go about diagnosing the cause for the slow download speed? Is there anything particular to EC2 instances that could cause this? Having trouble knowing where to start. Thanks for any help!

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  • cloning a kvm guest os to a vmdk file

    - by Bond
    I have a production environment where I am having 4 Guest OS running on a Ubuntu server which uses kvm. These OS are in an LVM based setup.I want these Virtual Machines to be in a vmdk format also.Where people would do experiments with these Virtual Machines so this in a vmware environment (or it can be Xen too) would be different from the kvm server.I would not have any control on that other environment so I want to give people vmdk images of these virtual machines. The production Virtual Machines will still keep running on kvm server but the VMs on which experiments would be done would be of type vmdk.(vmdk is a constraint) Here is output of lvscan ACTIVE '/dev/abcd/lvm1' [100.00 GiB] inherit ACTIVE '/dev/abcd/lvm2' [150.00 GiB] inherit ACTIVE '/dev/abcd/lvm3' [50.00 GiB] inherit ACTIVE '/dev/abcd/lvm4' [100.00 GiB] inherit I was reading man page of qemu-img and what I understand is I need to first create a qcow image file which I need to populate and then convert that to a vmdk file. Is that understanding correct? Now suppose /dev/abcd/lvm4 is the virtual machine with which I am going to start this experiment.I can shutdown the production VMs for some time to do this. So is the following way correct to go on server 1 (where kvm is running) qemu-img convert -c -f raw -O vmdk /dev/abcd/lvm4 /backup/lvm4.img or it will affect the lvm4 on kvm server 1. I do not want the VM running on original server to at all loose its any of the content but also have a vmdk file for each of the Guest OS on kvm. Before I proceed with any of the above things on the production machine I just want to make sure that I am doing the correct thing so I asking here.

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  • File in use when it's really not

    - by C-dizzle
    I am running Windows 7 Professional 32 bit on a Server 2008 network. I am getting a weird issue with an excel document where I open it up one morning, update it, save and close, the next morning I come in, open it up and it says "This file is in use and locked by csmith" which "csmith" is me! So I click on the cancel button, open it up again and it comes up fine. I can edit, save and close with no problem. But then have the same issue the next morning. Another weird thing is that we have a calendar shared in "Public Folders" under Outlook that seems to be having the same issue, which happens to be a calendar made in Excel. Exchange 2010 is installed on the server and the clients are using Exchange 2007. In the instance with the calendar, it will show conflicting edits have been made and you must keep one item or all items. And it shows an edit date of 4/24/2012 and 6/1/2012. But, there were NO edits done on 6/1, just tried opening it. This problem does not occur under my profile, but 2 others. These machines are ALSO running Windows 7 Professional 32 bit. We have a mix of Windows 7 and Windows XP machines on our network if that is any help. These issues did not start happening until we migrated from a server running Server 2003 and Exchange 2000, which the new server is running Server 2008 and Exchange 2010 as stated above. Is there something on the server side that is configured wrong?

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  • How can I make the Windows 7 taskbar behave like a cross between the old Quick Launch and new Superbar?

    - by frumious
    I really like the taskbar in Windows 7, I think combining buttons to launch apps and the icons that show your running apps is groovy. However, because I like having as much space as possible, I've got small icons enabled and shrunk the bar down to one row. I've also told it not to group the running apps unless there's no space left (to save me having to work harder to find the particular window I want), which also means that they have captions, and are thus quite wide. The (admittedly small) problem this gives me is that I can pin all my favourite apps to the bar, which looks much like the old Quick Launch bar, but when I launch them the running apps because much wider, and the unlaunched apps get lost amongst them. I can manually change the order to fix this, but next time I'll launch a different app and I'll be back to square one. What I'd prefer is for small unlaunched icons to be kept on the left, and wider running apps to move over to the right, which for me would be the best of both worlds. Is there any way I can organise that? I'm aware that one can use the traditional quick launch bar in Windows 7, but that's not what I'm after; I generally prefer the Windows 7 way.

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  • How do I calculate clock speed in multi-core processors?

    - by NReilingh
    Is it correct to say, for example, that a processor with four cores each running at 3GHz is in fact a processor running at 12GHz? I once got into a "Mac vs. PC" argument (which by the way is NOT the focus of this topic... that was back in middle school) with an acquaintance who insisted that Macs were only being advertised as 1Ghz machines because they were dual-processor G4s each running at 500MHz. At the time I knew this to be hogwash for reasons I think are apparent to most people, but I just saw a comment on this website to the effect of "6 cores x 0.2GHz = 1.2Ghz" and that got me thinking again about whether there's a real answer to this. So, this is a more-or-less philosophical/deep technical question about the semantics of clock speed calculation. I see two possibilities: Each core is in fact doing x calculations per second, thus the total number of calculations is x(cores). Clock speed is rather a count of the number of cycles the processor goes through in the space of a second, so as long as all cores are running at the same speed, the speed of each clock cycle stays the same no matter how many cores exist. In other words, Hz = (core1Hz+core2Hz+...)/cores.

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  • Active FTP client blocked on Windows XP

    - by Ian Hannah
    Summary We have a FTP server (running in active mode). We have an FTP client which is connecting to the server, carrying out a task and then closing the connection. The FTP Client can perform this operation on multiple threads. Problem We have a situation where customers are experiencing occasional failures to carry out operations on a FTP connection. The actual connection has been made to the server but when the server attempts to return data on the data port if fails. Observations We have a simple test FTP client which is running two separate threads. Each thread is performing a recursive listing of files from a root directory. With the firewall running on the client machine the hang happens within a few minutes. If the firewall is turned off on the client machine, the test application seems to run correctly. This does point to a potential firewall issue. However, with the firewall on we can list files on our company FTP server without any issues. If the simple test FTP client runs a single thread then we do not experience any problems whether or not the firewall is turned on. We have another simple test FTP client which was running 4 threads (with each opening a new FTP connection, doing a directory listing and closing the FTP connection as fast as possible) overnight with the firewall turned off. With the firewall turned on it fails in a short space of time. The confusing thing is that if the test FTP client and the FTP server are run on the same machine the failure occurs even though the firewall is turned off. This means that the problem may not be firewall related. Any help with what this could be would be much appreciated. Thanks Ian

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  • Shared files folder in Amazon Elastic Beanstalk environment

    - by por
    I'm working on a Drupal application, which is planned to be hosted in Amazon Elastic Beanstalk environment. Basically, Elastic Beanstalk enables the application to scale automatically by starting additional web server instances based on predefined rules. The shared database is running on an Amazon RDS instance, which all instances can access properly. The problem is the shared files folder (sites/default/files). We're using git as SCM, and with it we're able to deploy new versions by executing $ git aws.push. In the background Elastic Beanstalk automatically deletes ($ rm -rf) the current codebase from all servers running in the environment, and deploys the new version. The plan was to use S3 (s3fs) for shared files in the staging environment, and NFS in the production environment. We've managed to set up the environment to the extent where the shared files folder is mounted after a reboot properly. But... The Problem is that, in this setup, the deployment of new versions on running instances fail because $ rm -rf can't remove the mounted directory, and as result, the entire environment goes down and we need restart the environment, which isn't really an elegant solution. Question #1 is that what would be the proper way to manage shared files in this kind of deployment? Are you running such an environment? How did you solve the problem? By looking at Elastic Beanstalk Hostmanager code (Ruby) there seems be a way to hook our functionality (unmount if mounted in pre-deploy and mount in post-deploy) into Hostmanager (/opt/hostmanager/srv/lib/elasticbeanstalk/hostmanager/applications/phpapplication.rb) but the scripts defined in the file (i.e. /tmp/php_post_deploy_app.sh) don't seem to be working. That might be because our Ruby skills are non-existent. Question #2 is that did you manage to hook your functionality in Hostmanager in a portable way (i.e. by not changing the core Hostmanager files)?

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  • Backing up server and multiple clients

    - by inquam
    I'm running a Amahi server. It's basically a Fedora14 x64 installation. I'm looking for a good solution to backup my 200GB system drive on the server to an external USB/eSATA drive every night. I looked into using dd but since other things might be running on the server at the same time it didn't feel quite safe. I would like the backups to be incremental so the following backups after the initial one would be quite fast. The backup should also be bootable or prehaps be able to produce a bootable disk after booting from a CD or something. I would also like the server to be able to do similar backups of my clients running Ubuntu, Windows 7 x64, Windows 7 Starter, OSX Lion, Windows XP and so on. So no applications backing up only shared folders or something like that. My guess is a client daemon would have to exist that would lock the system to allow backup of a Windows system drive that can otherwise be quite cranky. Booting up a CD in a crashed client and connecting to the server restoring the latest backup and being up running is my ideal goal. Is there anything out there that would fit these needs?

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  • init.d script runs correctly but process doesn't live when booted fully up

    - by thetrompf
    I have a problem with an init.d script #!/bin/bash ES_HOME="/var/es/current" PID=$(ps ax | grep elasticsearch | grep $ES_HOME | grep -v grep | awk '{print $1}') #echo $PID #exit 0 case "$1" in start) if [ -z "$PID" ]; then echo "Starting Elasticsearch" echo "Starting Elasticsearch" /var/tmp/elasticsearch su -m elasticsearch -c "${ES_HOME}/bin/elasticsearch" exit 0; else echo "Elasticsearch already running" echo "Elasticsearch already running" /var/tmp/elasticsearch exit 0; fi ;; stop) if [ -n "$PID" ]; then echo "Stopping Elasticsearch" kill ${PID} echo "Stopped Elasticsearch" exit 0; else echo "Elasticsearch is not running" exit 0; fi ;; esac The scripts runs just file, as I can see in /var/tmp/elasticsearch a new line is added after every boot, but if I run: /etc/init.d/elasticsearch stop Just after the server is booted, I get "Elasticsearch is not running", ergo somehow the process does not stay alive. My question is why? and what am I doing wrong? Thanks in advance.

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  • Ubuntu second static IP, ifconfig, /etc/network/interfaces

    - by Schmoove
    I would like to add a second static IP to my local Ubuntu 11.10 desktop machine and have it automatically available after rebooting. So far I am successfully using ifconfig to to temporarily set up an alias for my primary network interface: # ifconfig eth1:0 192.168.178.3 up # ifconfig eth1 Link encap:Ethernet HWaddr c8:60:00:ef:a3:d9 inet addr:192.168.178.2 Bcast:192.168.0.255 Mask:255.255.255.0 inet6 addr: fe80::ca60:ff:feef:a3d9/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:61929 errors:0 dropped:0 overruns:0 frame:0 TX packets:64034 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:45330863 (45.3 MB) TX bytes:28175192 (28.1 MB) Interrupt:42 Base address:0x4000 eth1:0 Link encap:Ethernet HWaddr c8:60:00:ef:a3:d9 inet addr:192.168.178.3 Bcast:192.168.178.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:42 Base address:0x4000 However, when I add the following to /etc/network/interfaces, the alias is not up and running as expected after a reboot: # vi /etc/network/interfaces auto eth1:0 iface eth1:0 inet static address 192.168.178.3 netmask 255.255.255.0 I would like to know what to configure to get this to work. As a side note, I am running gnome shell.

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  • Microsoft Application Request Routing with Windows Authentication

    - by theplatz
    I'm running into a problem trying to get Windows Authentication working in an environment that uses Microsoft Application Request Routing and was hoping someone might be able to help. The problem I'm running into is that only some requests are authenticated, while others fail with 401 errors. I have followed the Special Case of Running IIS 7.0 in a Web Farm instructions found at http://blogs.msdn.com/b/webtopics/archive/2009/01/19/service-principal-name-spn-checklist-for-kerberos-authentication-with-iis-7-0.aspx to no avail. My current server setup looks like the following: ARR Two servers set up with IIS shared configuration using IIS 7.5 on Windows 2008 R2 Anonymous authentication turned on for the Default Web Site Web Farm Two servers running IIS 7.5 on Windows 2008 R2 Three web sites set up using port binding to differentiate between virtual hosts. Ports being used are 8000, 8001, and 8002 Application pools for Windows Authentication all use a common domain account SPN added to domain account for http/<virthalhost-name>:<port-number> and http/<virtualhost-name>.<fully-qualified-domain>:<port-number> The IIS logs show the following when authentication is working/failing. If I understand correctly, all requests should show DOMAIN\User_Name: 2012-11-19 15:03:17 CLUSTER-IP-ADDRESS GET /home/stylesheets/techweb.landing.css - 8002 DOMAIN\User_Name ARR-HOST-1-IP-ADDRESS 200 0 0 62 2012-11-19 15:03:17 CLUSTER-IP-ADDRESS GET /home/images/user-background-right.gif - 8002 - ARR-HOST-1-IP-ADDRESS 401 2 5 0 2012-11-19 15:03:17 CLUSTER-IP-ADDRESS GET /home/images/user-background-left.gif - 8002 DOMAIN\User_Name ARR-HOST-IP-ADDRESS 200 0 0 31 2012-11-19 15:03:17 CLUSTER-IP-ADDRESS GET /home/images/user-icon.png - 8002 - ARR-HOST-1-IP-ADDRESS 401 2 5 0 2012-11-19 15:03:17 CLUSTER-IP-ADDRESS GET /home/images/user-icon.png - 8002 - ARR-HOST-1-IP-ADDRESS 401 1 2148074248 0 2012-11-19 15:03:17 CLUSTER-IP-ADDRESS GET /home/images/application-icon.png - 8002 - ARR-HOST-1-IP-ADDRESS 401 1 2148074248 0 2012-11-19 15:03:17 CLUSTER-IP-ADDRESS GET /home/images/user-background-right.gif - 8002 - ARR-HOST-1-IP-ADDRESS 401 1 3221225581 15 2012-11-19 15:03:17 CLUSTER-IP-ADDRESS GET /home/images/building.gif - 8002 DOMAIN\User_Name ARR-HOST-2-IP-ADDRESS 200 0 0 218 Does anyone know what might cause this problem and how I can resolve it?

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  • Clarification on signals (sighup), jobs, and the controlling terminal

    - by asolberg
    So I've read two different perspectives and I'm trying to figure out which one is right. 1) Some sources online say that signals sent from the controlling terminal are ONLY sent to the foreground process group. That means if want a process to continue running in the background when you logout it is sufficient to simply suspend the job (ctrl-Z) and resume it in the background (bg). Then you can log out and it will continue to run because SIGHUP is only sent to the foreground job. See: http://blog.nelhage.com/2010/01/a-brief-introduction-to-termios-signaling-and-job-control/ ...In addition, if any signal-generating character is read by a terminal, it generates the appropriate signal to the foreground process group.... 2) Other sources claim you need to use the "nohup" command at the time the program is executed, or failing that, issue a "disown" command during execution to remove it from the jobs table that listens for SIGHUP. They say if you don't do this when you logout your process will also exit even if its running in a background process group. For example: http://docstore.mik.ua/orelly/unix3/upt/ch23_11.htm ...If I log out anyway, the shell sends my background job a HUP signal... In my own experiments with Ubuntu linux it seems like 1) is correct. I executed a command: "sleep 20 &" then logged out, logged back in and pressed did a "ps aux". Sure enough the sleep command was still running. So then why is it that so many people seem to believe number 2? And if all you have to do is place a job in the background to keep it running why do so many people use "nohup" and "disown?"

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  • Joining Samba to Active Directory with local user authentication

    - by Ansel Pol
    I apologise that this is somewhat incoherent, but hopefully someone will be able to make enough sense of this to understand what I'm trying to achieve and provide pointers. I have a machine with two network interfaces connected to two different networks (one of which it's providing several other services for, such as DNS), running two separate instances of Samba, one bound to each interface. One of the instances is just a workgroup-style setup using share-level authentication, which is all working fine. The problem is that I'm looking to join the other instance to an MS Active Directory domain (provided by MS Windows Small Business Server 2003) to enable a subset of the domain users to access the shares from Windows machines on the other network. The users who need access from the domain environment have accounts (whose names are all-lowercase versions of their domain usernames) on the machine running Samba, but I'm not sure about how to map the UIDs and everything I've read concerns authenticating accounts on that machine against either AD or another LDAP server. To clarify: I only want the credentials for AD users accessing the non-workgroup Samba instance to be authenticated against AD, not the accounts on the machine running Samba. I hope this is sufficiently clear. EDIT: In addition to being able to access the Samba shares from AD, I do also need to be able to access a share on the domain from the machine running Samba but would still like everything non-Samba-related to authenticate locally.

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  • cannot connect to <server_name>\sqlexpress

    - by Jackson Sunuwar
    I have tried disabling firing wall and checked sqlbrowser is started but for some reason I cannnot connect to my datbase... called server_name\sqlexpress.. I have a virtual machine and a full scale MS SQL Server 2008 R2 running on it... and I have several other vm running sqlexpress. they run fine and I can connect to them using sqlexpress... but when i try to access from sqlserver... I get this error. 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: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified) (Microsoft SQL Server, Error: -1) Digging deep into the error, I found this Error Number: -1 Severity: 20 State: 0 and finally this... Program Location: at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) at System.Data.SqlClient.TdsParser.Connect(ServerInfo serverInfo, SqlInternalConnectionTds connHandler, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, SqlConnection owningObject) at System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, Boolean ignoreSniOpenTimeout, Int64 timerExpire, SqlConnection owningObject) at System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(String host, String newPassword, Boolean redirectedUserInstance, SqlConnection owningObject, SqlConnectionString connectionOptions, Int64 timerStart) at System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance) at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance) at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection) at System.Data.ProviderBase.DbConnectionFactory.CreateNonPooledConnection(DbConnection owningConnection, DbConnectionPoolGroup poolGroup) at System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) at System.Data.SqlClient.SqlConnection.Open() at Microsoft.SqlServer.Management.SqlStudio.Explorer.ObjectExplorerService.ValidateConnection(UIConnectionInfo ci, IServerType server) at Microsoft.SqlServer.Management.UI.ConnectionDlg.Connector.ConnectionThreadUser() Firewall is turned off on the VM that's running mssqlserver... I turned of firewall on one of the vm that's running the sqlexpress but I still get the error... can someone please help... thank you

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  • Change the order of IP addresses returned by ifconfig?

    - by erikcw
    I have an Ubuntu server with several IP addresses attached to it. 127.0.0.1 is listed as venet0 by ifconfig. I'm using Chef to configure the server. The problem is that chef is listing 127.0.0.1 as the IP address for the server instead of one of the server's "real" IPs. (apparent "ohai ipaddress" uses the first IP listed by ifconfig to determine the server's IP). How can I change the order so the servers main IP is listed first instead of the 127.0.0.1? Can venet0 be deleted and venet0:0 be "promoted" to take its place since 127.0.0.1 is already listed in the "lo" interface? 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:334 errors:0 dropped:0 overruns:0 frame:0 TX packets:334 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:16700 (16.7 KB) TX bytes:16700 (16.7 KB) venet0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr:127.0.0.1 P-t-P:127.0.0.1 Bcast:0.0.0.0 Mask:255.255.255.255 UP BROADCAST POINTOPOINT RUNNING NOARP MTU:1500 Metric:1 RX packets:7622207 errors:0 dropped:0 overruns:0 frame:0 TX packets:8183436 errors:0 dropped:1 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:2102750761 (2.1 GB) TX bytes:2795213667 (2.7 GB) venet0:0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr:XXX.XXX.XXX.XX1 P-t-P:XXX.XXX.XXX.XX1 Bcast:0.0.0.0 Mask:255.255.255.255 UP BROADCAST POINTOPOINT RUNNING NOARP MTU:1500 Metric:1 venet0:1 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr:XXX.XXX.XXX.XX2 P-t-P:XXX.XXX.XXX.XX2 Bcast:0.0.0.0 Mask:255.255.255.255 UP BROADCAST POINTOPOINT RUNNING NOARP MTU:1500 Metric:1 route -n route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.0.2.1 0.0.0.0 255.255.255.255 UH 0 0 0 venet0 0.0.0.0 192.0.2.1 0.0.0.0 UG 0 0 0 venet0

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  • Site hanging in iis7 - how do I troubleshoot?

    - by Chris Foot
    I am currently having a problem with a windows 2008 server running IIS 7. The server runs several sites but only seems to have the issue with one particular site. Every so often, the whole server slows to a crawl with nearly all requests timing out! Invariably, when we log in to take a look there is always an IIS process using up around 90% cpu. Looking into the worker processes in IIS there are usually one or two requests that have been running for a long time. They are always in the ExecuteRequestHandler state with ManagedPipeline as the module name and the current ones i'm looking at have been running for 7686248 (what units is this in, it doesn't say?). It is also not always the same page, in fact we have seen at least 3 different pages listed under url when this has happened. It seems that the only way to bring the server back to life is to kill the 90% process! The site is running under .Net 4.0 and the code on it is very similar to other sites on the server which do not have the problem! How do I start troubleshooting this?

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  • CentOS vps is randomly rebooting

    - by develroot
    I have a centos vps (Parallels Virtuozzo container) which has been running for months. However, a few days ago it started to randomly reboot itself, and i can't find out why. And the biggest problem that i don't understand is that it takes 40 minutes to reboot (as far as i can see in the logs) root ~ # cat /var/log/messages | grep shutdown Oct 11 13:52:11 vps27 shutdown[23968]: shutting down for system halt Oct 14 14:55:17 vps27 shutdown[30662]: shutting down for system halt Oct 15 06:21:23 vps27 shutdown[20157]: shutting down for system halt And notice the time difference between shutdown and xinetd's start: Oct 15 06:21:23 vps27 shutdown[20157]: shutting down for system halt Oct 15 06:21:24 vps27 init: Switching to runlevel: 0 Oct 15 06:21:27 vps27 saslauthd[30614]: server_exit : master exited: 30614 Oct 15 06:21:38 vps27 named[30661]: shutting down Oct 15 06:21:47 vps27 exiting on signal 15 Oct 15 07:04:34 vps27 syslogd 1.4.1: restart. Oct 15 07:05:06 vps27 xinetd[1471]: xinetd Version 2.3.14 started with libwrap loadavg labeled-networking options compiled in. Oct 15 07:05:06 vps27 xinetd[1471]: Started working: 0 available services And here's what Parallels Power Panel says in terms of Status Changes: Time Old Status Status Obtained Oct 15, 2011 06:23:46 AM Mounted Down Oct 15, 2011 06:22:31 AM Running Mounted Oct 14, 2011 03:06:48 PM Starting Running Oct 14, 2011 03:06:23 PM Down Starting Oct 14, 2011 03:06:08 PM Mounted Down Oct 14, 2011 02:58:24 PM Running Mounted For some reason it's getting into Mounting mode and then restarts itself. The only problem that i can imagine is disk space utilization, which is now 84%. But can that be a reson for system halt? Time Category Details Type Parameter Oct 15, 2011 07:08:33 AM Resource Resource counter_disk_share_used yellow alert on environment vps27 current value: 82 soft limit: 85 hard limit: 95 Yellow zone counter_disk_share_used Oct 15, 2011 06:27:23 AM Resource Resource counter_disk_share_used yellow alert on environment vps27 current value: 82 soft limit: 85 hard limit: 95 Yellow zone counter_disk_share_used Oct 15, 2011 06:23:50 AM Resource Resource counter_disk_share_used green alert on environment vps27 current value: 0 soft limit: hard limit: 0 Green zone counter_disk_share_used Oct 14, 2011 03:06:24 PM Resource Resource counter_disk_share_used yellow alert on environment vps27 current value: 83 soft limit: 85 hard limit: 95 Yellow zone counter_disk_share_used Oct 14, 2011 03:05:50 PM Resource Resource counter_disk_share_used green alert on environment vps27 current value: 0 soft limit: hard limit: 0 Green zone counter_disk_share_used

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  • is ksplice production ready?

    - by faultyserver
    I would be interested to hear the serverfault community's experiences with Ksplice in production. Quick blurb from wikipedia: Ksplice is a free and open source extension of the Linux kernel which allows system administrators to apply security patches to a running kernel without having to reboot the operating system. and Ksplice can, without restarting the kernel, apply any source code patch that only needs to modify the kernel code. Unlike other hot update systems, Ksplice takes as input only a unified diff and the original kernel source code, and it updates the running kernel correctly, with no further human assistance required. Additionally, taking advantage of Ksplice does not require any preparation before the system is originally booted (the running kernel does not need to have been specially compiled, for example). In order to generate an update, Ksplice must determine what code within the kernel has been changed by the source code patch. So a few questions: How has the stability been? any odd issues that you have encountered with its 'rebootless live patching' of the kernel? Kernel panics or horror stories? I have been running it on a few test systems and so far its been working as advertised, but I am interested in what other sysadmins experiences have been with Ksplice before going 'all in' and deploying this on our production servers. So, anybody using Kspice in production? update: hmm, not seeing any real activity on this question after a couple of hours (besides some kind upvotes and favs). Maybe to spark some activity I'll also ask a few more questions and see if we can get this discussion going... "If you are aware of Ksplice, is there a reason you are not using it?" "Do you feel its still too bleeding edge, unproven or untested?" "Does Ksplice not fit well within your current patch-management system?" "Do you hate having systems that have long (and secure) uptimes?" ;-)

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  • Why would one of my servers stop being able to access other servers by FQDN?

    - by Newlyn Erratt
    I have a number of servers on our local network and our debian server has suddenly stopped being able to access the other servers via their FQDN. Initial symptom was inability to login with Active Directory accounts. On further inspection, this machine, porkbelly, was unable to access our other servers (e.g. bacon and albert) via their FQDN. That is, they can ping albert by running ping albert but not by running ping albert.domain.local though when running ping albert it will be expanded to albert.domain.local. The server is still accessible from other servers via both porkbelly and porkbelly.domain.local. Upon examination of hosts information and running hostname its hostname and FQDN are correct. The resolv.conf appears correct. It contains: domain domain.local search domain.local nameserver 192.168.0.xxx (the nameserver) The dns server is also our Windows AD server. I'm not even sure where to go from here or why dns seems to be partially working though I don't have much experience. Where should I go from here? What might be causing this issue where machines are visible via their hostname but not their FQDN?

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  • MacBook Pro and Backtrack 5R1 Configuration

    - by user119346
    I have a Macbook pro Quad core (2.2/8gb ram/750gb hdd). I have went through tons of forums on the Internet, but none of them seemed to be updated for the current Backtrack 5R1, or the question of getting it to correctly work on the MBP. Can anyone help? I don’t have a USB Dongle, and I want to be able to use the internal airport extreme wireless of the MBP to use BT 5R1. I have downloaded Backtrack 5R1 onto VMWare Fusion, and got it up and running, but to no avail. It keeps recognizing my card as a Ethernet connection. Kismac wont recognize the card either. So what I am asking for is this: The proper “download method.” for Backtrack 5R1 to my MacBook Pro. (YES I AM WILLING TO RE-DOWNLOAD BT 5R1). The Complete process from start to finish, UP TO DATE, from someone who has done this using an MBP Running Lion OSX. The proper tweaks, settings, or commands to get my airport extreme wireless card to work (it is BROADCOM 4331 I think). The wireless connection I need to use the tools on both Backtrack 5R1 and Kismac. I mainly need to test WEP cracking on my network for security. The difference between running BT 5R1 on VMWARE Fusion and running from downloading it directly to the MBP, if there is, How to download it directly to the MBP?

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  • Tomcat OutOfMemory after switching JVM

    - by Mathias
    I have a Tomcat6 server running on Debian squeeze there are 4 webapps running on it, and an in-JVM ActiveMQ server. It has been running for about a year with the same memorysettings, with openjdk-6. Everything has worked dandy, no issues at all. Now, for various reasons, i need to try out Sun's JDK. So, I installed sun's jvm with standard apt-get apt-get install sun-java6-bin , and switched using update-java-alternatives -s java-6-sun However, when i start tomcat, i get outofmemory, the server won't even start! If i switch back to openJDK, all works fine again. I haven't had any memory issues on this server before, so it feels strange that the server suddenly won't start with sun's JDK. Anybody have any clue as to why this might happen? Have i missed something? I naturally have set heap sizes etc. in tomcat. Currently running with: -Xms256m -Xmx1024m Which as mentioned works in openSDK, outofmemory in sun-jdk... EDIT: server is 64-bit, openJDK and Sun are 1.6.0, both 64-bit JVMs.

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  • Fedora 15: em1 recently dissapeared and hostapd no longer serves internet to wirelessly connected devices

    - by Daniel K
    I have a laptop running hostapd, phpd, and mysql. This laptop uses an Ethernet connection to connect to the internet and acts as a wireless access point for my workplace's wifi devices. After installing some software and reconnecting my Ethernet elsewhere, my "em1" device is no longer present and wirelessly connected devices can no longer reach the internet. The software I recently installed is: pptp, pptpd, and updated some fedora libraries. I have also recently moved my desk and laptop to another location and thus had to reconnect the Ethernet elsewhere. Wifi devices no longer have access to the internet. Wirelessly connected devices are able to successfully log into the laptop, showing full strength, correct SSID, and uses the proper password. However, when I tried to connect to a site like google, the request times out. The device "em1" also no longer appears on my machine. Running: # ifup em1 will give me the following output: ERROR : [/etc/sysconfig/network-scripts/ifup-eth] Device em1 does not seem to be present, delaying initialization. And running: # dhclient em1 has the following output: Cannot find device "em1" When I run # dmesg|grep renamed, I get the following: renamed network interface eth0 to p4p1. I've tried to connect to the internet through p4p1 directly from the laptop and was successful. However, my wireless devices connected to my laptop are not able to connect to the internet. I have uninstalled pptp and pptpd using # yum erase ... but the problem still persists. To install pptp I used: # yum install pptp To install pptpd I did the following: # rpm -Uvh http://poptop.sourceforge.net/yum/stable/fc15/pptp-release-current.noarch.rpm # yum install pptpd To update my fedora libraries I used: # yum check-update # yum update EDIT: Running # route produces the following results: Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface default 10.11.200.1 0.0.0.0 UG 0 0 0 p4p1 10.11.200.0 * 255.255.252.0 U 0 0 0 p4p1 172.16.100.0 * 255.255.255.0 U 0 0 0 wlan0

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  • A lots of Apache processes are using my CPU uses always more than 70%

    - by Barkat Ullah
    I am running a plesk panel in 1and1. I have 120 sites running and all are using pligg cms, each site has 600 visitors per day. Please see the details of my server below: HDD-1000GB RAM-16GB Processor-6 Core I always see a lot of apache processes running in my # top view, so the server seems overloaded. If I can reduce the amount apache processes I think the server will be ok. But I don't know why too many apache processes are running. Please see the link below for the screenshot of my # top view: http://dl.dropbox.com/u/26967109/%23Top-2.jpg Sometimes I saw too many connection error in my plesk control panel, so I added the below line in my [mysqld] section: set-variable=max_connections=416 But I didn't find a solution yet. I have also added maxclients and serverlimit 416 in the config /etc/httpd/conf/httpd.conf But no solution yet. I am researching around more than 7 days but don't get any solution. Please help me to solve the problem. In peak hours my sites are taking too much time to load, but off-peak hour it is ok. Please help me to find out the actual problem.

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  • How can I pause console output in rxvt?

    - by Javid Jamae
    I'm running rxvt in Cygwin on a Windows box. This is how I invoke it: rxvt -sr -sl 2500 -sb -geometry 90x30 -tn rxvt -fn "Lucida Console-14" -e /usr/bin/bash --login -i Anyone know how to pause the console output in rxvt? I can use Ctrl-S / Ctrl-Q to pause / un-pause, but this won't work if a script is already running and spewing output to stdout. Highlighting the terminal window with the mouse doesn't seem to work like with other consoles such as the standard Cygwin console, or the Windows command prompt console. Some sort of scroll lock would be nice, but I can't seem to find any way to do this. I know I could just pipe my output to a file, but I want a way to pause the output for something that I didn't expect to explode with console output. Basically I want to scroll back while its running without it constantly moving me to the bottom of the output buffer as it updates more data to stdout. I don't particularly care if the solution given actually pauses the script (like when you highlight the mouse in the Windows Command window), or just scroll locks and let's me scroll while its still running the underlying script, though I'd like to know how to do both if its possible.

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  • Can start-stop-daemon use environmental variables?

    - by scottburton11
    I need to daemonize a Windows app running in Wine, and create a pid in /var/run. Since it requires an X11 session to run, I need to make sure the $DISPLAY variable is set in the running user's environment. Assuming I already have a X11 session running, with a given display, here's what the start-stop-daemon line looks like in my /etc/init.d script: start-stop-daemon --start --pidfile /var/run/wine-app.pid -m -c myuser -g mygroup -k 002 --exec /home/myuser/.wine/drive_c/Program\ Files/wine-app.exe Unfortunately, my version of start-stop-daemon on Ubuntu 8.04 doesn't have the -e option to set environmental variables. I gather that you could simply set $DISPLAY before the command, like so: VAR1="Value" start-stop-daemon ... But it doesn't work. Since I'm using the -c {user} option to run as a specific user, I'm guessing there's an environment switch and VAR1 is lost. I've tried exporting DISPLAY from the running user's .profile and/or .bashrc but it doesn't work either. Is there another way to do this? Is this even possible? Am I overlooking something? Many thanks

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