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  • Whats the best cloud backup solution for a small scale server envoirnment?

    - by nbv4
    I have a server that runs a postgres database that contains about 200MB of data. Currently I have a cron job setup on my home computer which: ssh's into my server runs a remote script which makes a backup of the database scp's that dump over to my local hard drive for storage. Each dump is 20MiB. does this every six hours (one months of backups is roughly 2GiB) The problem with this setup is that if my local machine goes down for whatever reason, no backups will be made. Also, I can't have the cron run from the server, because I can't have it scp'd to my local machine from my server (firewalls and all that crap). My local machine is running Ubuntu 10.04, and my server is Ubuntu 9.10 server edition. I looked into Ubuntu One, but currently it's gui-only. I also looked into dropbox, but it's a pain in the ass to get setup in linux without gui support. Amazon S3 looks good but it's not free (yet dirt cheap). Is there any other alternative that I should look into? I'd prefer something where I can just have my script dump the database into a directory, and have the backup service 'watch' that folder and sync accordingly. I can maybe also have my local machine sync to the cloud backup so I have even more redundancy, plus easy access to my backups for use in testing.

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  • When a server IP changes, do exising TCP (e.g. http/mysql) connections remain running

    - by Luke Cousins
    We have some PHP-FPM servers and when they need a database connection, they connect to an HAProxy server which selects them a database server to use and the connection opens. When we then want to perform some maintenance on the HAProxy servers (such as config changes requiring an HAProxy restart), the process is as follows: Shutdown Keepalived on the HAProxy server Wait for the floating IP to transfer to the backup HAProxy server (also running Keepalived) Wait until HAProxy stats is reporting just one connection (us checking how many connections there are) Restart HAProxy Restart Keepalived As step 2 occurs, what will happen to the open mysql connections at that point? According to this TCP Sessions and IP Changes question the connections will be dropped. Is this really the case? If so, what, if anything, can be done to prevent this happening? Can the connection be in some way forced to use the main (non-floating) IP of the server? We also have a similar setup with two Nginx servers with Keepalived running on them and we were planning on doing the equivalent process. If we do, the same question applies - what happens to the existing http connections when the IP moves to the other server? I appreciate your help.

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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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  • Did my registrar screw up or is this how name server propagation works?

    - by Brad
    So my company has a number of domains with a large registrar that shall go unnamed. We are making some changes to our DNS infrastructure and the first of those is we are moving our secondary DNS from one server on site to four servers offsite. So we updated the name servers for each domain at the registrar by removing the entry for the old secondary name server and adding the four new ones. I monitored the old secondary server for requests and when I saw no new requests had been made for 24 hours I shut it down. That was this morning. I assumed at this point everything was good. Unfortunately this was my mistake. I should have gone and made sure name servers at large were returning the correct NS records. So this afternoon we were performing maintenance on our primary DNS server and we shut it down. This is when I started getting alerts from our external monitoring. I checked and sure enough, the DNS server used there reported the only NS record for our primary domain was the primary name server. The new secondary servers were not listed and neither was the old secondary. Is it unreasonable of me to have assumed that because the update was from ns1.mydomain.com ns2.mydomain.com to ns1.mydomain.com ns1.backupdns.com ns2.backupdns.com ns3.backupdns.com ns4.backupdns.com in one step at the registrar that there should be no intermediate state where the only NS record was for ns1.mydomain.com? Going forward to be safe obviously I will always leave the old name servers alone until after I'm 100% sure the new ones have propagated and only then remove the old name servers from the registrar. However, I'd still like to know if my registrar screwed up or if my expectation was unreasonable.

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  • Possible Solution for Setting up a Linux VPN Server to Encrypt WLAN Traffic of Macs and iPhones on

    - by GorillaPatch
    I would like to set up a VPN server on debian linux to encrypt wireless traffic coming from my Mac or iOS device. I would like to use a certificate-based solution. Setting up a PKI infrastructure and managing certificates is OK for me. 1. Which server to pick? By looking through the internet and here on stackoverflow I found the following possible solutions: strongSwan IPSec and racoon Which solution is feasible for a linode running debian squeeze? 2. How to configure the network? If I understood correctly a VPN has a virtual network interface as an endpoint on the server side. Naively I would think that I need a DHCP server running on the server to assign a dynamic private IP (like of the class C network 192.168.xxx.xxx) to the connecting clients. Next I think I would need to set up masquerading to NAT the incoming VPN traffic to the real interface directly connected to the internet. Is this the right way to go? Do you have any configuration examples? I often saw VPN configurations used to connect to your home network, but that is not what I am looking for. I have a server up in the internet and want to use it as a proxy to encrypt traffic in insecure network environments like public WLANs.

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  • What can inexperienced admin expect after server setup completed seemingly fine? [closed]

    - by Miloshio
    Inexperienced person seems to have done everything fine so far. This is his very first time that he is the only one in charge for LAMP server. He has installed OS, network, Apache, PHP, MySQL, Proftpd, MTA & MDA software, configured VirtualHosts properly (facts because he calls himself admin), done user management and various configuration settings with respect to security recommendations and... everything is fine for now... For now. If you were directing horror movie for server admin above mentioned what would you make up for boogieman that showed up and started to pursue him? Omitting hardware disaster cases for which one cannot do anything 'from remote', what is the most common causes of server or part-of-server or server-related significant failure when managed by inexperienced admin? I have in mind something that is newbie admins very often missing which is leading to later intervention of someone with experience? May that be some uncontrolled CPU-eating leftover process, memory-related glitch, widely-used feature that messes up something unexpected on anything like that? Newbie admin for now only monitors disk-space and RAM usage, and number of running processes. He would appreciate any tips regarding what's probably going to happen to his server over time.

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  • How to set up Windows 7 Professional as a NAS

    - by Enyalius
    I searched and didn't find any answers, so please forgive me if this is a repeat. Anyway, I have an older computer that I'm using as an HTPC, and I was hoping that I could use it as a NAS/multimedia server, as well. My primary uses would include accessing content on my PS3 (same LAN), accessing content from other computers on my home network and (if I can) accessing content from my Android phone over the internet. I have used SubSonic to stream music to my Android phone and other computers before, but I would really like to find a way to do this natively if possible. I know that I can buy external hard disk cases that can plug in the USB port of my router, that I can get a Drobo or other network storage solution, but I would really just rather not spend the money (especially considering that I already have a computer that I should be able to use). Hardware involved: Apple AirPort Extreme base station router (most recent revision) Home Theater Personal Computer: Core 2 Duo @ 2.4GHz, 8GB DDR2 RAM, ~3.5TB hard drive space Sony Playstaiton 3 Thin 120GB HTC Thunderbolt (I have 4G coverage) rooted and running Android 2.2.1 Various Apple laptops Various Windows 7 desktops/laptops Thanks in advance! Note- I have looked at open source NAS software but I would like to preserve the Windows Media Center functionality in Windows 7, so other NAS software is not an option for me currently. .

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  • Scripting around the lack of user:password@domain url functionality in jscript/IE

    - by Idiomatic
    I currently have a jscript that runs a php script on a server for me, dead simple. But... I want to be atleast somewhat secure so I setup a login. Now if I use the regular user:password@domain system it won't work (IE decided it was a security issue). And if I let IE just remember the password then it pops up a security message confirming my login every time (which kills the point of the button). So I need a way to make the security message go away. I could lower security settings, which tbh I am fine with but nothing seems to make it fuck off (there might be some registry setting to change). Find a fix for jscript that will let me use a password in the url. There used to be a regedit that worked for older systems which allowed IE to use url passwords (not working on my 64bit windows7 setup) though I doubt that'd have helped jscript anyways (since it outright crashes). Use an app other than IE. Inwhich case I'm not sure how to go about it, I want it to be responsive and invisible so IE was a good choice. It is near instant. Use XMLHttpRequest instead of IE directly? May even be faster but I've no idea if it'd help or just have the same error. Use a completely different approach. Maybe some app that can script website browsing. var args = {}; var objIEA = new ActiveXObject("InternetExplorer.Application"); if( WScript.Arguments.Item(0) == "pause" ){ objIEA.navigate("http://domain/index.html?pause"); } if( WScript.Arguments.Item(0) == "next" ){ objIEA.navigate("http://domain/index.html?next"); } objIEA.visible = false; while(objIEA.readyState != 4) {} objIEA.quit();

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  • Hyper-V vss-writer not making current copies [migrated]

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

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  • Is Ubuntu a bad distro for a standalone mysql database server?

    - by DhruvPathak
    I read an article here : http://www.mysqlperformanceblog.com/2011/12/08/which-linux-distribution-for-mysql-server/ On the other end there are Debian and Ubuntu. Both use tool called dpkg for package management. There isn’t a month that I log in to a system based on either distribution where there are no issues with packages consistency. Unfinished installations, unresolved conflicts are so common that it’s just beyond simple negligence. The packaging system is just not robust enough. Another problem is that one broken package may block you from installing or uninstalling anything else. Imagine that someone left system in such shape, you prepared for downtime, stopped MySQL and… error – text editor has not been properly installed, so you cannot upgrade MySQL either until the problem is fixed. In a stressful situation when downtime clock ticks – annoying at best We prefer Ubuntu server because of familiarity and Ubuntu also being development environment. Questions: Is Ubuntu used commonly in production for a mysql database server ? Is it worth the trouble ever to have one distro eg Ubuntu in web server, and another say Red Hat in database server ? Or Is a homogenous server pool a better choice ?

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  • How to get Postfix to send/forward/relay to a sub-domain located on another server?

    - by thiesdiggity
    I have a quick question. How do I setup postfix to send an email to another server (Exchange Server) when sending to an email address that has a sub-domain of our main server. For example, say our main server is mail.example.com and we have a Exchange server setup to receive emails from exchange.example.com. We have the MX records setup in our DNS and it receives correctly if we send from a GMail account. However, when we try to send an email from a @example.com account we get the following error: Host or domain name not found. Name service error for name=exchange.example.com type=A: Host not found I believe Postfix checks for local mailboxes first and if its setup with the domain it delivers to the local account, but in this case the sub-domain accounts are located in another server. Anyone have any thoughts on what I need to do within Postfix so it doesn't look locally for the exchange.example.com mailboxes? I found relay_domains directive within Postfix but that doesn't seem to fix it when I add the sub-domain. Thanks for your help.

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  • Windows - Decrypt encrypted file when user account is destroyed

    - by dc2
    I have a Virtual Machine running on my Windows Server 2008 computer that originally was received by me encryped, as the builder of the VM did it on a MAC, which decrypts files by default. I never thought to decrypt these files, as they automatically 'decrypt' when you have permission over them, so the VM has been running for over a year despite the encryption. I just upgraded my computer to Domain Controller (dcpromo.exe). Now when I try to access/run the VM, I can't because I don't have permission to decrypt the files as that was on another logon (local administrator) and now I am the domain administrator. Apparently the local admin is totally nuked when you upgrade to domain controller. I have tried EVERYTHING - taking ownership of the files, which works. Doesn't do anything for me. Adding full control to everyone on the files. I go to File Properties Advanced Details (under encryption) Users who can access this file. The only user is administrator@localcomputername, and there is a cert number. I try adding a new cert, I don't have permission. I don't have permission to: Decrypt the file (access is denied). Copy the file (to another computer) - access denied. I am totally stumped and this VM is a production machine and needs to get up right now. Does anyone have any ideas?

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  • It is okay to set MASQUERADE at 2 network interfaces in a Linux server?

    - by Patrick L
    There is a Linux server with 3 network interfaces, eth0, eth1, eth2. IP forwarding has been turn on in this server. eth0 is connected to 10.0.1.0/24. Its IP is 10.0.1.1. eth1 is connected to 172.16.1.0/24. Its IP is 172.16.1.1. Server A can ping router C at 172.16.1.2. eth2 is connected to 192.168.1.0/24. Its IP is 192.168.1.1. Server A can ping server B at 192.168.1.2. Router C is able to route to 172.16.2.0/24 and 172.16.3.0/24. [10.0.1.0/24] | 172.16.2.0/24------| | [C]------172.16.1.0/24------[A]------192.168.1.0/24------[B] 172.16.3.0/24------| We have set MASQUERADE at eth0. When server B (192.168.1.2) connect to 10.0.1.0/24, IP MASQUERADE will happen at eth0. Can we set MASQUERADE at eth1? Is it okay to set MASQUERADE at more than 1 network interfaces in Linux?

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  • Python 2.7 and Ubuntu 10.10: X11 fails

    - by c.a.p.
    Against every recommendation I have apt-get remove python in Ubuntu 10.10 (build 2.6.24-29-server x86_64) and apt-get install python2.7 Some built-in software with python2.6 dependencies (like firefox, other minor stuff) was fixed just by apt-get reinstalling or reinstalling from source and the system was stable for one day until I rebooted. Upon booting I got the message "ubuntu is running in low-graphics mode" I have an NVIDIA Quadro NVS 295 256 running on a HP Z600 Workstation so I sudoed: apt-get --purged nvidia* apt-get --purged xserver apt-get install linux-headers-generic apt-get install nvidia-* apt-get install xserver-xorg dpkg-reconfigure xserver-xorg nvidia-xconfig upon rebooting i get the same "ubuntu is running in low-graphics mode" if I decide to tell the boot menu to restart X, the Ubuntu 10.10 "load screen" shows up and does not do anything for hours. If I "X" the screen remains black for hours; ctrl-c shows that /etc/X11/xorg.conf did not produce any errors just a warning "Type "ONE_LEVEL"...". /var/log/Xorg.0.log issues the following warnings (no errors) (WW) AllowEmptyInput is on (WW) NVIDIA(0): UBB is incompatible If I "startX" I get /usr/bin/python: can't find '__main__.py"' in '/usr/share/command-not-found' Before re-installing xserver-xorg however "startX" ran, just by changing the resolution of the tty1 console. Any hints?

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  • Setting up a server that routes local traffic through vpn, while still being able to access internet directly

    - by Kazuo
    The goal is to setup a local server that routes local traffic through an uncontrolled remote vpn service while still being able to access the internet directly (not tunneled via vpn) and provide services through that direct connection. It is supposed to look like this: http://i.stack.imgur.com/74dGC.png Note: There is another router with modem between the local server and the internet. What is the easiest (best?) way to get this network setup working? I'm planning to setup the connection between the local router and the local server with simple ip forwarding. The problem now is that all the server's traffic is routed through the vpn tunnel as soon as I connect the server's openvpn client to the remote service so there is no direct internet connection available. My first idea was to setup a virtual machine (lxc container or something) and run the vpn client and local networking stuff in the vm. So that the vm receives all the incoming traffic from the local router and tunnels it through the vpn. This, as far as I understand, should not affect the physical server's network connection and should allow it to provide services to the internet. Before I start trying to set this up (I don't have much experience in networking), is there any easier or better way to do this? I would be thankful for every suggestion. Edit: Let's say the interface connected to the internet is eth0 and the interface connected to the local router is eth1. Another idea would be to create a virtual interface eth0:0 and specifiy it as openvpn's local endpoint and then force any traffic coming from eth1 through eth0:0. I'm not sure how I would force the traffic through eth0:0, though (possibly by adding routes).

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  • If record exists in database, UPDATE a single column

    - by Doug
    I have a bulk uploading object in place that is being used to bulk upload roughly 25-40 image files at a time. Each image is about 100-150 kb in size. During the upload, I've created a for each loop that takes the file name of the image (minus the file extension) to write it into a column named "sku". Also, for each file being uploaded, the date is recorded to a column named DateUpdated, as well as some image path data. Here is my c# code: protected void graphicMultiFileButton_Click(object sender, EventArgs e) { //graphicMultiFile is the ID of the bulk uploading object ( provided by Dean Brettle: http://www.brettle.com/neatupload ) if (graphicMultiFile.Files.Length > 0) { foreach (UploadedFile file in graphicMultiFile.Files) { //strip ".jpg" from file name (will be assigned as SKU) string sku = file.FileName.Substring(0, file.FileName.Length - 4); //assign the directory where the images will be stored on the server string directoryPath = Server.MapPath("~/images/graphicsLib/" + file.FileName); //ensure that if image existes on server that it will get overwritten next time it's uploaded: file.MoveTo(directoryPath, MoveToOptions.Overwrite); //current sql that inserts a record to the db SqlCommand comm; SqlConnection conn; string connectionString = ConfigurationManager.ConnectionStrings["DataConnect"].ConnectionString; conn = new SqlConnection(connectionString); comm = new SqlCommand("INSERT INTO GraphicsLibrary (sku, imagePath, DateUpdated) VALUES (@sku, @imagePath, @DateUpdated)", conn); comm.Parameters.Add("@sku", System.Data.SqlDbType.VarChar, 50); comm.Parameters["@sku"].Value = sku; comm.Parameters.Add("@imagePath", System.Data.SqlDbType.VarChar, 300); comm.Parameters["@imagePath"].Value = "images/graphicsLib/" + file.FileName; comm.Parameters.Add("@DateUpdated", System.Data.SqlDbType.DateTime); comm.Parameters["@DateUpdated"].Value = DateTime.Now; conn.Open(); comm.ExecuteNonQuery(); conn.Close(); } } } After images are uploaded, managers will go back and re-upload images that have previously been uploaded. This is because these product images are always being revised and improved. For each new/improved image, the file name and extension will remain the same - so that when image 321-54321.jpg was first uploaded to the server, the new/improved version of that image will still have the image file name as 321-54321.jpg. I can't say for sure if the file sizes will remain in the 100-150KB range. I'll assume that the image file size will grow eventually. When images get uploaded (again), there of course will be an existing record in the database for that image. What is the best way to: Check the database for the existing record (stored procedure or SqlDataReader or create a DataSet ...?) Then if record exists, simply UPDATE that record so that the DateUpdated column gets today's date. If no record exists, do the INSERT of the record as normal. Things to consider: If the record exists, we'll let the actual image be uploaded. It will simply overwrite the existing image so that the new version gets displayed on the web. We're using SQL Server 2000 on hosted environment (DiscountAsp). I'm programming in C#. The uploading process will be used by about 2 managers a few times a month (each) - which to me is not a allot of usage. Although I'm a jr. developer, I'm guessing that a stored procedure would be the way to go. Just seems more efficient - to do this record check away from the for each loop... but not sure. I'd need extra help writing a sproc, since I don't have too much experience with them. Thank everyone...

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  • Sockets server design advice

    - by Rob
    We are writing a socket server in c# and need some advice on the design. Background: Clients (from mobile devices) connect to our server app and we leave their socket open so we can send data back down to them whenever we need to. The amount of data varies but we generally send/receive data from each client every few seconds, so it's quite intensive. The amount of simultaneous connections can range from 50-500 (and more in the future). We have already written a server app using async sockets and it works, however we've come across some stumbling blocks and we need to make sure that what we're doing is correct. We have a collection which holds our client states (we have no socket/connection pool at the moment, should we?). Each time a client connects we create a socket and then wait for them to send us some data and in receiveCallBack we add their clientstate object to our connections dictionary (once we have verified who they are). When a client object then signs off we shutdown their socket and then close it as well as remove them from our collection of clients dictionary. Presumably everything happens in the right order, everything works as expected. However, almost everyday it stops accepting connections, or so we think, either that or it connects but doesn't actually do anything past that and we can't work out why it's just stopping. There are few things that we'r'e unsure about 1) Should we be creating some kind of connection pool as opposed to just a dictionary of client sockets 2) What happens to the sockets that connect but then don't get added to our dictionary, they just linger around in memory doing nothing, should we create ANOTHER dictionary that holds the sockets as soon as they are created? 3) What's the best way of finding if clients are no longer connected? We've read some many methods but we're not sure of the best one to use, send data or read data, if so how? 4) If we loop through the connections dictonary to check for disposed clients, should we be locking the dictionary, if so how does this affect other clients objects trying to use it at the same time, will it throw an error or just wait? 5) We often get disposedSocketException within ReceiveCallBack method at random times, does this mean we are safe to remove that socket from the collection? We can't seem to find any production type examples which show any of this working. Any advice would be greatly received

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  • Ejabberd clustering problem with amazon EC2 server

    - by user353362
    Hello Guys! I have been trying to install ejabberd server on Amazons EC2 instance. I am kinds a stuck at this step right now. I am following this guide: http://tdewolf.blogspot.com/2009/07/clustering-ejabberd-nodes-using-mnes... From the guide I have sucessfully completed the Set up First Node (on ejabberd1) part. But am stuck in part 4 of Set up Second Node (on ejabberd2) So all in all, I created the main node and am able to run the server on that node and access its admin console from then internet. In the second node I have installed ejabberd. But I am stuck at point 4 of setting up the node instruction presented in this blog (http://tdewolf.blogspot.com/2009/07/clustering-ejabberd-nodes-using-mnes...). I execute this command " erl -sname ejabberd@domU-12-31-39-0F-7D-14 -mnesia dir '"/var/lib/ejabberd/"' -mnesia extra_db_nodes "['ejabberd@domU-12-31-39-02-C8-36']" -s mnesia " on the second server and get a crashing error: root@domU-12-31-39-0F-7D-14:/var/lib/ejabberd# erl -sname ejabberd@domU-12-31-39-0F-7D-14 -mnesia dir '"/var/lib/ejabberd/"' -mnesia extra_db_nodes "['ejabberd@domU-12-31-39-02-C8-36']" -s mnesia {error_logger,{{2010,5,28},{23,52,25}},"Protocol: ~p: register error: ~p~n",["inet_tcp",{{badmatch,{error,duplicate_name}},[{inet_tcp_dist,listen,1},{net_kernel,start_protos,4},{net_kernel,start_protos,3},{net_kernel,init_node,2},{net_kernel,init,1},{gen_server,init_it,6},{proc_lib,init_p_do_apply,3}]}]} {error_logger,{{2010,5,28},{23,52,25}},crash_report,[[{pid,<0.21.0},{registered_name,net_kernel},{error_info,{exit,{error,badarg},[{gen_server,init_it,6},{proc_lib,init_p_do_apply,3}]}},{initial_call,{net_kernel,init,['Argument__1']}},{ancestors,[net_sup,kernel_sup,<0.8.0]},{messages,[]},{links,[#Port<0.52,<0.18.0]},{dictionary,[{longnames,false}]},{trap_exit,true},{status,running},{heap_size,610},{stack_size,23},{reductions,518}],[]]} {error_logger,{{2010,5,28},{23,52,25}},supervisor_report,[{supervisor,{local,net_sup}},{errorContext,start_error},{reason,{'EXIT',nodistribution}},{offender,[{pid,undefined},{name,net_kernel},{mfa,{net_kernel,start_link,[['ejabberd@domU-12-31-39-0F-7D-14',shortnames]]}},{restart_type,permanent},{shutdown,2000},{child_type,worker}]}]} {error_logger,{{2010,5,28},{23,52,25}},supervisor_report,[{supervisor,{local,kernel_sup}},{errorContext,start_error},{reason,shutdown},{offender,[{pid,undefined},{name,net_sup},{mfa,{erl_distribution,start_link,[]}},{restart_type,permanent},{shutdown,infinity},{child_type,supervisor}]}]} {error_logger,{{2010,5,28},{23,52,25}},crash_report,[[{pid,<0.7.0},{registered_name,[]},{error_info,{exit,{shutdown,{kernel,start,[normal,[]]}},[{application_master,init,4},{proc_lib,init_p_do_apply,3}]}},{initial_call,{application_master,init,['Argument_1','Argument_2','Argument_3','Argument_4']}},{ancestors,[<0.6.0]},{messages,[{'EXIT',<0.8.0,normal}]},{links,[<0.6.0,<0.5.0]},{dictionary,[]},{trap_exit,true},{status,running},{heap_size,233},{stack_size,23},{reductions,123}],[]]} {error_logger,{{2010,5,28},{23,52,25}},std_info,[{application,kernel},{exited,{shutdown,{kernel,start,[normal,[]]}}},{type,permanent}]} {"Kernel pid terminated",application_controller,"{application_start_failure,kernel,{shutdown,{kernel,start,[normal,[]]}}}"} Crash dump was written to: erl_crash.dump Kernel pid terminated (application_controller) ({application_start_failure,kernel,{shutdown,{kernel,start,[normal,[]]}}}) root@domU-12-31-39-0F-7D-14:/var/lib/ejabberd# any idea what going on? I am not really sure how to solve this problem :S how to let ejabberd only access register from one special server? › Is that the right way of copying .erlang.cookie file? Submitted by privateson on Sat, 2010-05-29 00:11. before this I was getting this error (see below), I solved it by running this command: chmod 400 .erlang.cookie Also to copy the cookie I simply created a file using vi on the second server and copied the secret code from server one to the second server. Is that the right way of copying .erlang.cookie file? ERROR ~~~~~~~~~~ root@domU-12-31-39-0F-7D-14:/etc/ejabberd# erl -sname ejabberd@domU-12-31-39-0F-7D-14 -mnesia dir '"/var/lib/ejabberd/"' -mnesia extra_db_nodes "['ejabberd@domU-12-31-39-02-C8-36']" -s mnesia {error_logger,{{2010,5,28},{23,28,56}},"Cookie file /root/.erlang.cookie must be accessible by owner only",[]} {error_logger,{{2010,5,28},{23,28,56}},crash_report,[[{pid,<0.20.0},{registered_name,auth},{error_info,{exit,{"Cookie file /root/.erlang.cookie must be accessible by owner only",[{auth,init_cookie,0},{auth,init,1},{gen_server,init_it,6},{proc_lib,init_p_do_apply,3}]},[{gen_server,init_it,6},{proc_lib,init_p_do_apply,3}]}},{initial_call,{auth,init,['Argument__1']}},{ancestors,[net_sup,kernel_sup,<0.8.0]},{messages,[]},{links,[<0.18.0]},{dictionary,[]},{trap_exit,true},{status,running},{heap_size,987},{stack_size,23},{reductions,439}],[]]} {error_logger,{{2010,5,28},{23,28,56}},supervisor_report,[{supervisor,{local,net_sup}},{errorContext,start_error},{reason,{"Cookie file /root/.erlang.cookie must be accessible by owner only",[{auth,init_cookie,0},{auth,init,1},{gen_server,init_it,6},{proc_lib,init_p_do_apply,3}]}},{offender,[{pid,undefined},{name,auth},{mfa,{auth,start_link,[]}},{restart_type,permanent},{shutdown,2000},{child_type,worker}]}]} {error_logger,{{2010,5,28},{23,28,56}},supervisor_report,[{supervisor,{local,kernel_sup}},{errorContext,start_error},{reason,shutdown},{offender,[{pid,undefined},{name,net_sup},{mfa,{erl_distribution,start_link,[]}},{restart_type,permanent},{shutdown,infinity},{child_type,supervisor}]}]} {error_logger,{{2010,5,28},{23,28,56}},crash_report,[[{pid,<0.7.0},{registered_name,[]},{error_info,{exit,{shutdown,{kernel,start,[normal,[]]}},[{application_master,init,4},{proc_lib,init_p_do_apply,3}]}},{initial_call,{application_master,init,['Argument_1','Argument_2','Argument_3','Argument_4']}},{ancestors,[<0.6.0]},{messages,[{'EXIT',<0.8.0,normal}]},{links,[<0.6.0,<0.5.0]},{dictionary,[]},{trap_exit,true},{status,running},{heap_size,233},{stack_size,23},{reductions,123}],[]]} {error_logger,{{2010,5,28},{23,28,56}},std_info,[{application,kernel},{exited,{shutdown,{kernel,start,[normal,[]]}}},{type,permanent}]} {"Kernel pid terminated",application_controller,"{application_start_failure,kernel,{shutdown,{kernel,start,[normal,[]]}}}"} Crash dump was written to: erl_crash.dump Kernel pid terminated (application_controller) ({application_start_failure,kernel,{shutdown,{kernel,start,[normal,[]]}}}) root@domU-12-31-39-0F-7D-14:/var/lib/ejabberd# cat /var/log/ejabberd/ejabberd.log =INFO REPORT==== 2010-05-28 22:48:53 === I(<0.321.0:mod_pubsub:154) : pubsub init "localhost" [{access_createnode, pubsub_createnode}, {plugins, ["default","pep"]}] =INFO REPORT==== 2010-05-28 22:48:53 === I(<0.321.0:mod_pubsub:210) : ** tree plugin is nodetree_default =INFO REPORT==== 2010-05-28 22:48:53 === I(<0.321.0:mod_pubsub:214) : ** init default plugin =INFO REPORT==== 2010-05-28 22:48:53 === I(<0.321.0:mod_pubsub:214) : ** init pep plugin =ERROR REPORT==== 2010-05-28 23:40:08 === ** Connection attempt from disallowed node 'ejabberdctl1275090008486951000@domU-12-31-39-0F-7D-14' ** =ERROR REPORT==== 2010-05-28 23:41:10 === ** Connection attempt from disallowed node 'ejabberdctl1275090070163253000@domU-12-31-39-0F-7D-14' **

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  • "PGError: no connection to the server" after idle

    - by user573484
    After my application sits idle overnight, when I try to access it in the morning I get a 500 Internal server error and the logs indicate "PGError: no connection to the server". After this first request if I refresh the page again everything is fine. I'm running Ubuntu 10.04 with apache 2, Passenger 3.0.2, Rails 2.3.8, and Postgres 8.4 on a remote server. Any ideas how to fix this? Here is the log: Processing ApplicationController#index (for 192.168.1.33 at 2011-01-06 17:28:14) [GET] Parameters: {"action"=>"index", "controller"=>"da"} ActiveRecord::StatementInvalid (PGError: no connection to the server : SELECT * FROM "users" WHERE ("users"."id" = 1) LIMIT 1): app/controllers/application_controller.rb:47:in `current_user' app/controllers/application_controller.rb:51:in `set_current_user' app/controllers/application_controller.rb:123:in `render_optional_error_file' passenger (3.0.2) lib/phusion_passenger/rack/request_handler.rb:96:in `process_request' passenger (3.0.2) lib/phusion_passenger/abstract_request_handler.rb:513:in `accept_and_process_next_request' passenger (3.0.2) lib/phusion_passenger/abstract_request_handler.rb:274:in `main_loop' passenger (3.0.2) lib/phusion_passenger/classic_rails/application_spawner.rb:321:in `start_request_handler' passenger (3.0.2) lib/phusion_passenger/classic_rails/application_spawner.rb:275:in `send' passenger (3.0.2) lib/phusion_passenger/classic_rails/application_spawner.rb:275:in `handle_spawn_application' passenger (3.0.2) lib/phusion_passenger/utils.rb:479:in `safe_fork' passenger (3.0.2) lib/phusion_passenger/classic_rails/application_spawner.rb:270:in `handle_spawn_application' passenger (3.0.2) lib/phusion_passenger/abstract_server.rb:357:in `__send__' passenger (3.0.2) lib/phusion_passenger/abstract_server.rb:357:in `server_main_loop' passenger (3.0.2) lib/phusion_passenger/abstract_server.rb:206:in `start_synchronously' passenger (3.0.2) lib/phusion_passenger/abstract_server.rb:180:in `start' passenger (3.0.2) lib/phusion_passenger/classic_rails/application_spawner.rb:149:in `start' passenger (3.0.2) lib/phusion_passenger/spawn_manager.rb:219:in `spawn_rails_application' passenger (3.0.2) lib/phusion_passenger/abstract_server_collection.rb:132:in `lookup_or_add' passenger (3.0.2) lib/phusion_passenger/spawn_manager.rb:214:in `spawn_rails_application' passenger (3.0.2) lib/phusion_passenger/abstract_server_collection.rb:82:in `synchronize' passenger (3.0.2) lib/phusion_passenger/abstract_server_collection.rb:79:in `synchronize' passenger (3.0.2) lib/phusion_passenger/spawn_manager.rb:213:in `spawn_rails_application' passenger (3.0.2) lib/phusion_passenger/spawn_manager.rb:132:in `spawn_application' passenger (3.0.2) lib/phusion_passenger/spawn_manager.rb:275:in `handle_spawn_application' passenger (3.0.2) lib/phusion_passenger/abstract_server.rb:357:in `__send__' passenger (3.0.2) lib/phusion_passenger/abstract_server.rb:357:in `server_main_loop' passenger (3.0.2) lib/phusion_passenger/abstract_server.rb:206:in `start_synchronously' passenger (3.0.2) helper-scripts/passenger-spawn-server:99 /!\ FAILSAFE /!\ Thu Jan 06 17:28:14 -0700 2011 Status: 500 Internal Server Error PGError: no connection to the server : SELECT * FROM "users" WHERE ("users"."id" = 1) LIMIT 1 /var/lib/gems/1.8/gems/activerecord-2.3.8/lib/active_record/connection_adapters/abstract_adapter.rb:221:in `log' /var/lib/gems/1.8/gems/activerecord-2.3.8/lib/active_record/connection_adapters/postgresql_adapter.rb:520:in `execute' /var/lib/gems/1.8/gems/activerecord-2.3.8/lib/active_record/connection_adapters/postgresql_adapter.rb:1002:in `select_raw' /var/lib/gems/1.8/gems/activerecord-2.3.8/lib/active_record/connection_adapters/postgresql_adapter.rb:989:in `select' /var/lib/gems/1.8/gems/activerecord-2.3.8/lib/active_record/connection_adapters/abstract/database_statements.rb:7:in `select_all_without_query_cache' /var/lib/gems/1.8/gems/activerecord-2.3.8/lib/active_record/connection_adapters/abstract/query_cache.rb:60:in `select_all' /var/lib/gems/1.8/gems/activerecord-2.3.8/lib/active_record/connection_adapters/abstract/query_cache.rb:81:in `cache_sql' /var/lib/gems/1.8/gems/activerecord-2.3.8/lib/active_record/connection_adapters/abstract/query_cache.rb:60:in `select_all' /var/lib/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:664:in `find_by_sql' /var/lib/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:1578:in `find_every' /var/lib/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:1535:in `find_initial' /var/lib/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:616:in `find' /var/lib/gems/1.8/gems/activerecord-2.3.8/lib/active_record/base.rb:1910:in `find_by_id' /home/user/application/releases/20110106230903/app/controllers/application_controller.rb:47:in `current_user' /home/user/application/releases/20110106230903/app/controllers/application_controller.rb:51:in `set_current_user' /home/user/application/releases/20110106230903/app/controllers/application_controller.rb:123:in `render_optional_error_file' /var/lib/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/rescue.rb:97:in `rescue_action_in_public' /home/user/application/releases/20110106230903/vendor/plugins/exception_notification/lib/exception_notification/notifiable.rb:48:in `rescue_action_in_public' /var/lib/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/rescue.rb:154:in `rescue_action_without_handler' /var/lib/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/rescue.rb:74:in `rescue_action' /var/lib/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/base.rb:532:in `send' /var/lib/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/base.rb:532:in `process_without_filters' /var/lib/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/filters.rb:606:in `process' /var/lib/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/rescue.rb:65:in `call_with_exception' /var/lib/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/dispatcher.rb:90:in `dispatch' /var/lib/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/dispatcher.rb:121:in `_call' /var/lib/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/dispatcher.rb:130 /var/lib/gems/1.8/gems/activerecord-2.3.8/lib/active_record/query_cache.rb:29:in `call' /var/lib/gems/1.8/gems/activerecord-2.3.8/lib/active_record/query_cache.rb:29:in `call' /var/lib/gems/1.8/gems/activerecord-2.3.8/lib/active_record/connection_adapters/abstract/query_cache.rb:34:in `cache' /var/lib/gems/1.8/gems/activerecord-2.3.8/lib/active_record/query_cache.rb:9:in `cache' /var/lib/gems/1.8/gems/activerecord-2.3.8/lib/active_record/query_cache.rb:28:in `call' /var/lib/gems/1.8/gems/activerecord-2.3.8/lib/active_record/connection_adapters/abstract/connection_pool.rb:361:in `call' /var/lib/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/string_coercion.rb:25:in `call' /var/lib/gems/1.8/gems/rack-1.1.0/lib/rack/head.rb:9:in `call' /var/lib/gems/1.8/gems/rack-1.1.0/lib/rack/methodoverride.rb:24:in `call' /var/lib/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/params_parser.rb:15:in `call' /var/lib/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/session/cookie_store.rb:99:in `call' /var/lib/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/failsafe.rb:26:in `call' /var/lib/gems/1.8/gems/rack-1.1.0/lib/rack/lock.rb:11:in `call' /var/lib/gems/1.8/gems/rack-1.1.0/lib/rack/lock.rb:11:in `synchronize' /var/lib/gems/1.8/gems/rack-1.1.0/lib/rack/lock.rb:11:in `call' /var/lib/gems/1.8/gems/actionpack-2.3.8/lib/action_controller/dispatcher.rb:106:in `call' /var/lib/gems/1.8/gems/passenger-3.0.2/lib/phusion_passenger/rack/request_handler.rb:96:in `process_request' /var/lib/gems/1.8/gems/passenger-3.0.2/lib/phusion_passenger/abstract_request_handler.rb:513:in `accept_and_process_next_request' /var/lib/gems/1.8/gems/passenger-3.0.2/lib/phusion_passenger/abstract_request_handler.rb:274:in `main_loop' /var/lib/gems/1.8/gems/passenger-3.0.2/lib/phusion_passenger/classic_rails/application_spawner.rb:321:in `start_request_handler' /var/lib/gems/1.8/gems/passenger-3.0.2/lib/phusion_passenger/classic_rails/application_spawner.rb:275:in `send' /var/lib/gems/1.8/gems/passenger-3.0.2/lib/phusion_passenger/classic_rails/application_spawner.rb:275:in `handle_spawn_application' /var/lib/gems/1.8/gems/passenger-3.0.2/lib/phusion_passenger/utils.rb:479:in `safe_fork' /var/lib/gems/1.8/gems/passenger-3.0.2/lib/phusion_passenger/classic_rails/application_spawner.rb:270:in `handle_spawn_application' /var/lib/gems/1.8/gems/passenger-3.0.2/lib/phusion_passenger/abstract_server.rb:357:in `__send__' /var/lib/gems/1.8/gems/passenger-3.0.2/lib/phusion_passenger/abstract_server.rb:357:in `server_main_loop' /var/lib/gems/1.8/gems/passenger-3.0.2/lib/phusion_passenger/abstract_server.rb:206:in `start_synchronously' /var/lib/gems/1.8/gems/passenger-3.0.2/lib/phusion_passenger/abstract_server.rb:180:in `start' /var/lib/gems/1.8/gems/passenger-3.0.2/lib/phusion_passenger/classic_rails/application_spawner.rb:149:in `start' /var/lib/gems/1.8/gems/passenger-3.0.2/lib/phusion_passenger/spawn_manager.rb:219:in `spawn_rails_application' /var/lib/gems/1.8/gems/passenger-3.0.2/lib/phusion_passenger/abstract_server_collection.rb:132:in `lookup_or_add' /var/lib/gems/1.8/gems/passenger-3.0.2/lib/phusion_passenger/spawn_manager.rb:214:in `spawn_rails_application' /var/lib/gems/1.8/gems/passenger-3.0.2/lib/phusion_passenger/abstract_server_collection.rb:82:in `synchronize' /var/lib/gems/1.8/gems/passenger-3.0.2/lib/phusion_passenger/abstract_server_collection.rb:79:in `synchronize' /var/lib/gems/1.8/gems/passenger-3.0.2/lib/phusion_passenger/spawn_manager.rb:213:in `spawn_rails_application' /var/lib/gems/1.8/gems/passenger-3.0.2/lib/phusion_passenger/spawn_manager.rb:132:in `spawn_application' /var/lib/gems/1.8/gems/passenger-3.0.2/lib/phusion_passenger/spawn_manager.rb:275:in `handle_spawn_application' /var/lib/gems/1.8/gems/passenger-3.0.2/lib/phusion_passenger/abstract_server.rb:357:in `__send__' /var/lib/gems/1.8/gems/passenger-3.0.2/lib/phusion_passenger/abstract_server.rb:357:in `server_main_loop' /var/lib/gems/1.8/gems/passenger-3.0.2/lib/phusion_passenger/abstract_server.rb:206:in `start_synchronously' /var/lib/gems/1.8/gems/passenger-3.0.2/helper-scripts/passenger-spawn-server:99

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  • cannot access sql server after publishing site in iis7

    - by vinu
    I am created a website using visual studio 2010. On the time of the development of website I am able to access the database.. but after publishing the site using IIS7..i was unable to access the database..the exception occured during that time was "the connection is in the closed state".in IIS7 When I changed the application pool identity to localsystem, it worked. Data base is installed in the same machine. and server is SQL SERVER 2008 R2

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  • Safari can’t establish a secure connection to the server

    - by Haris
    I am using Mac OS X 10.5.8 behind a company firewall and have proxy settings and username / password through which I can connect to internet. The internet is working as I am posting this question through it, but if I try to open Facebook or Gmail the following message appears: Safari can’t open the page “https://www.google.com/accounts/ServiceLogin?[..]” because Safari can’t establish a secure connection to the server “www.google.com” What could be wrong?

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  • Java compiler error: Can't open input server /Library/InputManagers/Inquisitor

    - by unknown (yahoo)
    I am trying to compile HelloWorld in Java under Mac OS X 10.6 (Snow Leopard) and I get this compiler error: java[51692:903] Can't open input server /Library/InputManagers/Inquisitor It happens when I am using terminal command javac and when I am trying to do this in NetBeans. I was trying to open folder "Inquisitor", but I have no access to folder, even if I login as root user. What is going on?

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