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  • POST Fail via AJAX Request?

    - by Jascha
    I can't for the life of me figure out why this is happening. This is kind of a repost (submitted to stackoverflow, but maybe a server issue?). I am running a javascript log out function called logOut() that has make a jQuery ajax call to a php script... function logOut(){ var data = new Object; data.log_out = true; $.ajax({ type: 'POST', url: 'http://www.mydomain.com/functions.php', data: data, success: function() { alert('done'); } }); } the php function it calls is here: if(isset($_POST['log_out'])){ $query = "INSERT INTO `token_manager` (`ip_address`) VALUES('logOutSuccess')"; $connection->runQuery($query); // <-- my own database class... // omitted code that clears session etc... die(); } Now, 18 hours out of the day this works, but for some reason, every once in a while, the POST data will not trigger my query. (this will last about an hour or so). I figured out the post data is not being set by adding this at the end of my script... $query = "INSERT INTO `token_manager` (`ip_address`) VALUES('POST FAIL')"; $connection->runQuery($query); So, now I know for certain my log out function is being skipped because in my database is the following data: if it were NOT being skipped, my data would show up like this: I know it is being skipped for two reasons, one the die() at the end of my first function, and two, if it were a success a "logOutSuccess" would be registered in the table. Any thoughts? One friend says it's a janky hosting company (hostgator.com). I personally like them because they are cheap and I'm a fan of cpanel. But, if that's the case??? Thanks in advance. -J

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  • Should I persist images on EBS or S3 ??

    - by enes
    Hi; I am migrating my Java,Tomcat, Mysql server to AWS EC2. I have already attached EBS volume for storing Mysql data. In my web application people may upload images. So I should persist them. There are 2 alternatives in my mind. 1- Save uploaded images to EBS volume. 2- Use S3 service. The followings are my notes, please be skeptic about them, as my expertise is not on servers, but software development. EBS plus: S3 storage is more expensive. (0.15 $/Gb 0.1$/Gb) S3 plus: Serving statics from EBS may influence my web server's performance negatively. Is this true? Does Serving images affect server performance notably? For S3 my server will not be responsible for serving statics. S3 plus: Serving statics from EBS may result I/O cost, probably it will be minor. EBS plus: People say EBS is faster. S3 plus: People say S3 is more safe for persistence. EBS plus: No need to learn API, it is straight forward to save the images to EBS volume. Namely I can not decide, will be happy if you guide. Thanks

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  • What breaks in a Windows domain if a member has a high time skew?

    - by Ryan Ries
    It's taken for granted by most IT people that in a Windows domain, if a member server's clock is off by more than 5 minutes (or however many minutes you've configured it for) from that of its domain controller - logons and authentications will fail. But that is not necessarily true. At least not for all authentication processes on all versions of Windows. For instance, I can set my time on my Windows 7 client to be skewed all to heck - logoff/logon still works fine. What happens is that my client sends an AS_REQ (with his time stamp) to the domain controller, and the DC responds with KRB_AP_ERR_SKEW. But the magic is that when the DC responds with the aforementioned Kerberos error, the DC also includes his time stamp, which the client in turn uses to adjust his own time and resubmits the AS_REQ, which is then approved. This behavior is not considered a security threat because encryption and secrets are still being used in the communication. This is also not just a Microsoft thing. RFC 4430 describes this behavior. So my question is does anyone know when this changed? And why is it that other things fail? For instance, Office Communicator kicks me off if my clock starts drifting too far out. I really wish to have more detail on this. edit: Here's the bit from RFC 4430 that I'm talking about: If the server clock and the client clock are off by more than the policy-determined clock skew limit (usually 5 minutes), the server MUST return a KRB_AP_ERR_SKEW. The optional client's time in the KRB-ERROR SHOULD be filled out. If the server protects the error by adding the Cksum field and returning the correct client's time, the client SHOULD compute the difference (in seconds) between the two clocks based upon the client and server time contained in the KRB-ERROR message. The client SHOULD store this clock difference and use it to adjust its clock in subsequent messages. If the error is not protected, the client MUST NOT use the difference to adjust subsequent messages, because doing so would allow an attacker to construct authenticators that can be used to mount replay attacks.

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  • LASER x Deskjet Printer

    - by Mike
    I am about to buy a color printer. I had a b&W laserjet printer in the past but since then I use deskjet for decades. I need a printer that can deliver high quality as these photo deskjet printers but I am tired of paying ink that costs $9,000 per gallon of ink (1 gallon = 3.785 liters = 300 cartridges = $9,000). So, I was pondering about buying a color laser, but I am not sure if these printers can deliver the same quality and worth the investment in terms of toner consumption. I remembered that my old laserjet printer was able to print 1100 pages per toner cartridge. The deskjet printers I have can print 500 pages per cartridge. Price by price, 2 deskjet cartridges have more or less the same cost as one toner cartridge and in theory prints almost the same. I am not sure if this is true for color lasers. What you guys can tell me about quality, toner cost and cost per page using laser or deskjet. Does it worths the change? Remember that a deskjet printer costs $50 and a laser printer costs $200. thanks.

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  • OpenVPN: ERROR: could not read Auth username from stdin

    - by user56231
    I managed to setup openvpn but now I want to integrate a user/pass authentication method so, even though I haven't added the auth-nocache in the server config, whenever I try to connect it returns with the following message on the client side: ERROR: could not read Auth username from stdin My server.conf file contains basic stuff, everything works up untill I try to implement this for of authentication. mode server dev tun proto tcp port 1194 keepalive 10 120 plugin /usr/lib/openvpn/openvpn-auth-pam.so login client-cert-not-required username-as-common-name auth-user-pass-verify /etc/openvpn/auth.pl via-env ca /etc/openvpn/easy-rsa/2.0/keys/ca.crt cert /etc/openvpn/easy-rsa/2.0/keys/server.crt key /etc/openvpn/easy-rsa/2.0/keys/server.key dh /etc/openvpn/easy-rsa/2.0/keys/dh1024.pem user nobody group nogroup server 10.8.0.0 255.255.255.0 persist-key persist-tun #persist-local-ip status openvpn-status.log verb 3 client-to-client push "redirect-gateway def1" push "dhcp-option DNS 10.8.0.1" log-append /var/log/openvpn comp-lzo I searched all over the net for a solution and all answers seems to be related to the auth-nocache param which I haven't set. The directive auth-user-pass-verify /etc/openvpn/auth.pl via-env points to a script which is executed to perform the authentication. A false authentication should result in a exit 1 while a true one should result with exit 0. For testing, that script auth.pl returns exit 0 no matter what the input is but it seems that the file is not executed before the error raises. auth.pl file contents: #!/usr/bin/perl my $user = $ENV{username}; my $passwd = $ENV{password}; printf("$user : $passwd\n"); exit 0; Any ideas?

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  • Best practices for settings for Oracle database creation

    - by Gary
    When installing an Oracle Database, what non-default settings would you normally apply (or consider applying) ? I'm not after hardware dependent setting (eg memory allocation) or file locations, but more general items. Similarly anything that is a particular requirement for a specific application rather than generally applicable isn't really useful. Do you separate out code/API schemas (PL/SQL owners) from data schemes (table owners) ? Do you use default or non-default roles, and if the latter, do you password protect the role ? I'm also interested in whether there's any places where you do a REVOKE of a GRANT that is installed by default. That may be version dependent as 11g seems more locked down for its default install. These are ones I used in a recent setup. I'd like to know whether I missed anything or where you disagree (and why). Database Parameters Auditing (AUDIT_TRAIL to DB and AUDIT_SYS_OPERATIONS to YES) DB_BLOCK_CHECKSUM and DB_BLOCK_CHECKING (both to FULL) GLOBAL_NAMES to true OPEN_LINKS to 0 (did not expect them to be used in this environment) Character set - AL32UTF8 Profiles I created an amended password verify function that used the apex dictionary table (FLOWS_030000.wwv_flow_dictionary$) as an extra check to prevent simple passwords. Developer logins CREATE PROFILE profile_dev LIMIT FAILED_LOGIN_ATTEMPTS 8 PASSWORD_LIFE_TIME 32 PASSWORD_REUSE_TIME 366 PASSWORD_REUSE_MAX 12 PASSWORD_LOCK_TIME 6 PASSWORD_GRACE_TIME 8 PASSWORD_VERIFY_FUNCTION verify_function_11g SESSIONS_PER_USER unlimited CPU_PER_SESSION unlimited CPU_PER_CALL unlimited PRIVATE_SGA unlimited CONNECT_TIME 1080 IDLE_TIME 180 LOGICAL_READS_PER_SESSION unlimited LOGICAL_READS_PER_CALL unlimited; Application login CREATE PROFILE profile_app LIMIT FAILED_LOGIN_ATTEMPTS 3 PASSWORD_LIFE_TIME 999 PASSWORD_REUSE_TIME 999 PASSWORD_REUSE_MAX 1 PASSWORD_LOCK_TIME 999 PASSWORD_GRACE_TIME 999 PASSWORD_VERIFY_FUNCTION verify_function_11g SESSIONS_PER_USER unlimited CPU_PER_SESSION unlimited CPU_PER_CALL unlimited PRIVATE_SGA unlimited CONNECT_TIME unlimited IDLE_TIME unlimited LOGICAL_READS_PER_SESSION unlimited LOGICAL_READS_PER_CALL unlimited; Privileges for a standard schema owner account CREATE CLUSTER CREATE TYPE CREATE TABLE CREATE VIEW CREATE PROCEDURE CREATE JOB CREATE MATERIALIZED VIEW CREATE SEQUENCE CREATE SYNONYM CREATE TRIGGER

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  • exim4 to relay emails

    - by Matthieu
    I have exim4 installed on a Linux box. The basics work fine and I can send email from that machine without any problem to whatever email address. I also have a printer/scanner which is capable to send scans as emails. It needs an SMTP gateway to be able to do that. So I give the IP address of that Linux box, changed the configuration a little bit but still cannot get it to work. After I run dpkg-reconfigure exim4-config, here is what I get in /etc/exim4/update-exim4.conf.conf : dc_eximconfig_configtype='internet' dc_other_hostnames='' dc_local_interfaces='127.0.0.1;192.168.2.2' dc_readhost='' dc_relay_domains='mycompanyemail.com' dc_minimaldns='false' dc_relay_nets='192.168.2.0/24' dc_smarthost='' CFILEMODE='644' dc_use_split_config='false' dc_hide_mailname='' dc_mailname_in_oh='true' dc_localdelivery='mail_spool' My problem is that with this configuration, I can only send to emails @mycompanyemail.com... It says I can use wildcard, but when I do that, the '*' is replaced by whatever filename is in the directory where I run all that. How can I configure it to be able to send emails with any domain ? Or am I doing it wrong ? EDIT : here is the part of the log that's causing trouble : 2011-08-03 16:28:18 H=(NPI2D389C) [192.168.2.20] F=<[email protected]> rejected RCPT <[email protected]>: relay not permitted The first part ([email protected]) does not matter. I changed the email address. The point is that if this email is @mycompanyemail.com then everything works fine. Anything else does not work. I could add gmail.com, but I am looking to have any domain working...

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  • Http-Only cookies in WebLogic: what versions support them/how and why are they supported?

    - by John
    We want to make all cookies set by our webapp http-only. I only have a basic understanding of the benefits of doing this but I'm told by security people that it's a Good Thing (tm) Our app is running under JDK1.6.05 and WebLogic10.3.0 After way too much digging around Oracle's website for documentation, I've found good evidence that the first version of WebLogic to support http-only cookies is 10.3.1. By "support," I mean the cookie-http-only deployment-descriptor element. Before we go about upgrading, I'd be nice to have these questions answered: 1a) Is it accurate that WL10.3.1 is the first version to support http-only cookies and that we're out of luck with 10.3.0? 1b) If we do indeed need to upgrade, is there an easy to do so under Windows? I've heard people mention an "upgrade jar" that you just stick in the classpath but I can't find any mention of this by Oracle. Does an easy way exist, or do we need to do a full-install of the new version? 2) What does the cookie-http-only deployment-descriptor element do when enabled? Will it ensure all cookies set by the application have an http-only=true attribute? Will it do more or less? Is there anything I'll have to do programmatically? 3) Is there anything in general I should know about http-only cookies, getting my web app to take advantage of them, or other security concerns?

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  • Windows typeperf and pound signs.

    - by Weegee
    I'm currently trying to use typeperf to access some Windows performance counters. Unfortunately, a few of the instances I'm trying to check are of the format service#1. The command typeperf "\\server\Process(service#1)\Working Set Peak" is unfortunately returning the data for \\server\Process(service)\Working Set Peak rather than the data for the instance service#1. This holds true for any of the services that have pound signs in the counter string. Does anyone know of a method to get around this problem? Sample output: I:\>typeperf -s server "\Process(service#1)\Working Set" "(PDH-CSV 4.0)","\\server\Process(service)\Working Set" "10/08/2009 09:37:29.070","1643274240.000000" "10/08/2009 09:37:30.070","1643274240.000000" "10/08/2009 09:37:31.070","1643274240.000000" The command completed successfully. I:\>typeperf -s server "\Process(service#2)\Working Set" "(PDH-CSV 4.0)","\\server\Process(service)\Working Set" "10/08/2009 09:37:39.273","1643274240.000000" "10/08/2009 09:37:40.273","1643274240.000000" "10/08/2009 09:37:41.273","1643274240.000000" "10/08/2009 09:37:42.273","1643274240.000000" "10/08/2009 09:37:43.273","1643274240.000000" The command completed successfully. I can confirm in PerfMon that the Working Set value "1643274240.000000" is incorrect for both service#1 and service#2. I am running Windows XP Service Pack 2, but a co-worker who is running Windows Server 2003 was having the same troubles.

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  • Custom HTTP Status Codes (a la Twitter 420: Enhance Your Calm) [migrated]

    - by Max Bucknell
    I'm currently implementing an HTTP API, my first ever. I've been spending a lot of time looking at the Wikipedia page for HTTP status codes, because I'm determined to implement the right codes for the right situations. Listed on that page is a code with number 420, which is a custom code that Twitter used to use for rate limiting. There is already a code for rate limiting, though. It's 429. This led me to wonder why they would set a custom one, when there is already a use case. Is that just being cute? And if so, then which circumstances would make it acceptable to return a different status code, and what, if any problems may clients have with it? I read somewhere that Mozilla doesn't implement the joke 418: I’m a teapot response, which makes me think that clients choose which status codes they implement. If that's true, then I can imagine Twitter's funny little enhance your calm code being problematic. Unless I'm mistaken, and we can appropriate any code number to mean whatever we like, and that only convention dictates that 404 means not found, and 429 means take it easy.

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  • How can I have puppet deploy ssh keys for virtual users?

    - by Pheezy
    I am trying to get puppet to assign authorized ssh keys for virtual users but I keep getting the following error: err: Could not retrieve catalog: Could not parse for environment production: Syntax error at 'user'; expected '}' at /etc/puppet/modules/users/manifests/ssh_authorized_keys.pp:9 I believe my configuration are correct (listed below) but is there a syntax error or scoping issue I am missing? I would simply like to assign users to nodes and have those users automagically have their ssh keys installed. Is there maybe a better way to do this and I'm just overthinking it? # /etc/puppet/modules/users/virtual.pp class user::virtual { @user { "user": home => "/home/user", ensure => "present", groups => ["root","wheel"], uid => "8001", password => "SCRAMBLED", comment => "User", shell => "/bin/bash", managehome => "true", } # /etc/puppet/modules/users/manifests/ssh_authorized_keys.pp ssh_authorized_key { "user": ensure => "present", type => "ssh-dss", key => "AAAAB....", user => "user", } # /etc/puppet/modules/users/init.pp import "users.pp" import "ssh_authorized_keys.pp" class user::ops inherits user::virtual { realize( User["user"], ) } # /etc/puppet/manifests/modules.pp import "sudo" import "users" # /etc/puppet/manifests/nodes.pp node basenode { include sudo } node 'testbox' inherits basenode { include user::ops } # /etc/puppet/manifests/site.pp import "modules" import "nodes" # The filebucket option allows for file backups to the server filebucket { main: server => 'puppet' } # Set global defaults - including backing up all files to the main filebucket and adds a global path File { backup => main } Exec { path => "/usr/bin:/usr/sbin/:/bin:/sbin" }

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  • Debian/OVH: How to configure multiple Failover IP on the same Xen (Debian) Virtual Machine?

    - by D.S.
    I have a problem on a Xen virtual machine (running latest Debian), when I try to configure a second failover IP address. OVH reports that my IP is misconfigured and they complaint they receive a massive quantity of ARP packets from this IPs, so they are going to block my IP unless I fix this issue. I suspect there's a routing issue, but I don't know (and can't find any useful info on the provider's website, and their support doesn't provide me a valid solution, just bounce me to their online - useless - guides). My /etc/network/interfaces look like this: # The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 iface eth0 inet static address AAA.AAA.AAA.AAA netmask 255.255.255.255 broadcast AAA.AAA.AAA.AAA post-up route add 000.000.000.254 dev eth0 post-up route add default default gw 000.000.000.254 dev eth0 # Secondary NIC auto eth0:0 iface eth0:0 inet static address BBB.BBB.BBB.BBB netmask 255.255.255.255 broadcast BBB.BBB.BBB.BBB And the routing table is: Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 000.000.000.254 0.0.0.0 255.255.255.255 UH 0 0 0 eth0 0.0.0.0 000.000.000.254 0.0.0.0 UG 0 0 0 eth0 In these examples (true IP addresses are replaced by fake ones, guess why :)), 000.000.000.000 is my main server's IP address (dom0), 000.000.000.254 is the default gateway OVH recommends, AAA.AAA.AAA.AAA is the first IP Failover and BBB.BBB.BBB.BBB is the second one. I need both AAA.AAA.AAA.AAA and BBB.BBB.BBB.BBB to be publicly reachable from Internet and point to my domU, and to be able to access Internet from inside the virtual machine (domU). I am using eth0 and eth0:0 because due to OVH support, I have to assign both IPs to the same MAC address and then create a virtual eth0:0 interface for the second IP. Any suggestion? What am I doing wrong? How can I stop OVH complaining about ARP flood? Many thanks in advance, DS

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  • Nexus functionality is limited after installation

    - by Dmitriy Sukharev
    I have a CentOS based server with Sonatype Nexus 2.0.4-1 installed. The issue is that there are no standard "Artifact Search", "Advanced Search", "Browse Index", "Refresh Index" Nexus features, as well as Artifact Information tab after selection of any artifact (only Maven Information tab). I tried to Google, but was amazed that there're no information about this issue. Actually it looks like all actions I've done are: wget http://www.sonatype.org/downloads/nexus-2.0.4-1-bundle.tar.gz tar -xvf nexus-2.0.4-1-bundle.tar.gz cp -r nexus-2.0.4-1 sonatype-work /opt/ ln -s /opt/nexus-2.0.4-1/* /opt/nexus ln /opt/nexus/bin/nexus /etc/init.d/ chmod 755 /etc/init.d/nexus vim /etc/init.d/nexus NEXUS_HOME=“/opt/nexus” RUN_AS_USER=“nexus” useradd -s /sbin/nologin -d /var/lib/nexus nexus chown -R nexus /opt/nexus/ chown -R nexus /opt/nexus-2.0.4-1/ sudo -u nexus cp /opt/nexus/conf/examples/proxy-https/jetty.xml /opt/nexus/conf/ To force Nexus be available through HTTPS I went to Administration - Server - Application Server Settings as admin and changed Base URL to https:// external IP/nexus and set Force Base URL to true. Any ideas how to get missed Nexus features?

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  • Color Printer: Laser vs Inkjet

    - by Mike
    I am about to buy a color printer. I had a B&W Laserjet printer in the past but since then I've used inkjets for decades. I need a printer that can deliver high quality as these photo inkjet printers, but I'm tired of paying for ink that costs $9,000 per gallon (1 gallon = 3.785 liters = 300 cartridges = $9,000). So, I was thinking about buying a color laser printer, but I'm not sure these printers can deliver the same quality and are worth the investment in terms of toner consumption. I remembered that my old Laserjet printer was able to print 1100 pages per toner cartridge. The inkjet printers I have can print 500 pages per cartridge. Price by price, 2 inkjet cartridges have more or less the same cost as one toner cartridge and in theory prints almost the same. I am not sure if this is true for color lasers. What can you guys tell me about quality, toner cost and cost per page for laser or inkjet printer? Is it worth the change? (Keep in mind that an inkjet printer costs $50 and a laser printer costs $200.) Thanks.

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  • Internal and External DNS from Different Servers, Same Zone

    - by Shane
    Hello All, I am either having trouble understanding how DNS works, or I am having trouble configuring my DNS correctly (either one isn't good). I am currently working with a domain, I'll call it webdomain.com, and I need to allow all of our internal users to get out to dotster to get our public DNS entries just like the rest of the world. Then, on top of that, I want to be able to supply just a few override DNS entries for testing servers and equipment that is not available publically. As an example: public.webdomain.com - should get this from dotster outside.webdomain.com - should get this from dotster as well testing.webdomain.com - should get this from my internal dns controller The problem that I seem to be running into at every turn is that if I have an internal DNS controller that contains a zone for webdomain.com then I can get my specified internal entries but never get anything from the public DNS server. This holds true regardless of the type of DNS server I use also--I have tried both a Linux Bind9 and a Windows 2008 Domain Controller. I guess my big question is: am I being unreasonable to think that a system should be able to check my specified internal DNS and in the case where a requested entry doesn't exist it should fail over to the specified public dns server -OR- is this just not the way DNS works and I am lost in the sauce? It seems like it should be as simple as telling my internal DNS server to forward any requests that it can't fulfill to dotster, but that doesn't seem to work. Could this be a firewall issue? Thanks in advance

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  • iis7 large worker process request queue creating process blocking aspnet.config & machine.config amended (bottleneck)

    - by scott_lotus
    ASP.net 2.0 app .net 2.0 framework IIS7 I am seeing a large queue of "requests" appear under the "worker process" option. State recorded appear to be Authenticate Request and Execute Request Handles more than anything else. I have amended aspnet.config in C:\Windows\Microsoft.NET\Framework64\v2.0.50727 (32 bit path and 64 bit path) to include: maxConcurrentRequestsPerCPU="50000" maxConcurrentThreadsPerCPU="0" requestQueueLimit="50000" I have amended machine.config in C:\Windows\Microsoft.NET\Framework64\v2.0.50727\CONFIG (32 bit and 64 bit path) to include: autoConfig="true" maxIoThreads="100" maxWorkerThreads="100" minIoThreads="50" minWorkerThreads="50" minFreeThreads="176" minLocalRequestFreeThreads="152" Still i get the issue. The issue manifestes itself as a large number of processes in the Worker Process queue. Number of current connections to the website display 500 when this issue occurs. I dont think i have seen concurrent connections over 500 without this issue occurring. Web application slows as the request block. Refreshing the app pool resolves for a while (as expected) as the load is spread between the two pools. Application pool in question FIXED REQUEST have been set to refresh on 50000. Thank you for any help. Scott quick edit to say hmm, my develeopers are telling me the project was built with .net 3.5 framework. Looking at C:\Windows\Microsoft.NET\Framework64\v3.5 there does not appear to be a ASPNET.CONFIG or a MACHINE.CONFIG .... is there a 3.5 equivalent ? after a little searching apparenetly 3.5 uses the 2.0 framework files that 3.5 is missing. So back to the original question , where is my bottleneck ?

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  • Java Swing over Remote Desktop - Strange, weird GUI squashing

    - by ADTC
    I thought this question fits SuperUser more than StackOverflow because it's not about actual Java programming, though programmers might be more likely to encounter the problem. Anyway, let me start of with some stats before I ask the actual question: Laptop: Windows 7 x32 Screen resolution 1024 x 768; Nvidia GeForce Go 6200 Connected to desktop via ad-hoc wireless network Access internet via desktop Desktop: Windows 7 x64 Screen resolution 1920 x 1080 Connected to laptop via ad-hoc wireless network Access internet via cable modem I'm connecting to my laptop via Remote Desktop from my desktop to take advantage of the large screen. I'm doing programming on my laptop (for portability reasons). Everything else runs smooth and fast over Remote Desktop as both computers are connected directly over the ad-hoc wireless. The only problem is this: Java Swing apps don't display the GUI properly. I acquired a Java Swing application and I'm debugging it in Eclipse. Here's what I got when I ran the app: Apparently there doesn't seem to be anything wrong with the GUI application I'm debugging, because the Java Control Panel exhibits the same problem. I've searched high and low in Google about this; the closest I came to a solution is this. But sadly, the use of -Dsun.java2d.nodraw=true has no effect at all. This only happens over Remote Desktop. I have tried locally and the GUI apps display properly. This isn't a dealbreaker for me as I can stop using Remote Desktop when developing Java Swing apps. However, I would like to know if anyone has encountered this and found any solution. PS: All software involved (Eclipse, Java JRE, etc.) are latest versions.

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  • Backup data rate on Raspberry Pi maxing out at 5 Mb/s. Why?

    - by bastibe
    I set up my Raspberry Pi as a Time Machine, as documented here. At the moment, the Raspberry Pi is connected to my MacBook Pro using a direct Ethernet cable. Also, an external hard drive (laptop drive) is connected to the Raspberry Pi using the USB port. However, backups are pretty slow. Activity Monitor claims that the Network is transferring a very steady 5 Mb/s, where my Time Capsule is transferring up to 8 Mb/s with a lot of fluctuation. The Raspberry Pi self-reports (top) that its CPU is only half-used, with about equal parts afpd, usb-storage and jbd2/sda1-8. Thus, I think that the processing power of the Raspberry Pi does not seem to be the problem here. To me, this looks like there is some kind of bottleneck that maxes out at 5 Mb/s thus potentially having my backups run at less than their potential speed. To the best of my knowledge, this might be the afp-daemon, the usb-bus or the external hard drive. So, my question is, how could I identify the true culprit and what can I do about it?

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  • How can I safely close this window and forever avoid seeing similar pop-ups from Mackeeper Zeobit's malware and spyware?

    - by Michael Prescott
    The attached image shows a window that just popped up and the only button available is the OK button. I could Force quit Safari, but I've got several sites open right now and don't want to try and find my place again. Besides, I've seen similar hacks in the past and I'd like to learn how to handle them in a way better than just a brute force-quit. I've never heard of MacKeeper or Zeobit, so I opened Firefox and did a few searches while Safari is obviously still stuck, waiting for me to click the sneaky OK button in the dialog window. Anyhow, at least the first few pages of most search results contain lots of blabbering from questionable witnesses about how MacKeeper saved them from some malware or spyware. However, any company that is hacking the browser to maliciously install their product is itself the criminal and not providing a true security application. So, there are three questions here: How can I close this window? Can I do something to Safari to avoid these hacks in the future? (Just curious) Is MacKeeper or Zeobit somehow loading the search results so that no information about their application being malware or spyware is listed (I can't be the only person in the world that is offended by their tactics, even though it appears I am)?

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  • Name resolution not working with ipv6 on centos

    - by jolivier
    I just installed CentOs 6.3 on a server to be installed in a data center, but cannot get name resolution / curl to work. I know this is because of it trying to use ipv6, since ping google.com works, curl -4 google.com works, but not curl google.com. I removed the ipv6 adress from the interface and it does not change anything. This is very problematic since most system tools like yum fail at name resolution currently. Browsers like Firefox work because they might be using another tool for name resolution than the one use by curl. I managed to fix this on workstations by completely disabling ipv6 following tutorials like this one / hardcoding name resolution in /etc/hosts. But since I am here configuring a server which will be later installed in a remote data center, I would like not to mess up, understand what is going on and fix it properly. Besides, I will face the same issue with more servers to come so I would really appreciate your help in understanding this problem and how to solve it. I would be happy to provide more information if needed to help understand what is going on. The current network configuration is a small enterprise network, with a DNS server (let's call it A) configured once a long time ago. dig google.com and dig -4 google.com are both refused by the A DNS. But this is also true for my workstation on which curl is working (and yes they both use the same A DNS server). Indeed this faulty server and my workstation have multiple nameservers in /etc/resolv.conf, and the second one is working fine for both of them, so if I remove A from my resolv.conf everything works fine! Regards, Olivier

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  • Linux Scheduler (not using all cores on multi-core machine) RHEL6

    - by User512
    I'm seeing strange behavior on one of my servers (running RHEL 6). There seems to be something wrong with the scheduler. Here's the test program I'm using: #include <stdio.h> #include <unistd.h> #include <stdlib.h> void RunClient(int i) { printf("Starting client %d\n", i); while (true) { } } int main(int argc, char** argv) { for (int i = 0; i < 4; ++i) { pid_t p_id = fork(); if (p_id == -1) { perror("fork"); } else if (p_id == 0) { RunClient(i); exit(0); } } return 0; } This machine has a lot more than 4 cores so we'd expect all processes to be running at 100%. When I check on top, the cpu usage varies. Sometimes it's split (100%, 33%, 33%, 33%), other times it's split (100%, 100%, 50%, 50%). When I try this test on another server of ours (running RHEL 5), there are no issues (it's 100%, 100%, 100%, 100%) as expected. What's causing this and how can I fix it? Thanks

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  • Linux: prevent VNC from swapping like mad

    - by Weezy
    I'm accessing a MacMini (with MacOS X 10.4) from my Linux machine using VNC and there's an issue that is driving me crazy... My Linux machine has 4 GB of ram and I run a lot of various apps on it and I've got no issue at all. It's all snappy and don't hear the hard disk swapping/read/writing too often. Now with VNC, the hard disk is swapping like mad... When I'm moving things on the OS X desktop. So I was thinking of creating a ramdisk and forcing the temp VNC files to go into that ramdisk but the problem is I can't find any temp files. I've attempted to do that: #!/bin/bash while [ true ] do lsof | grep vnc done And eyeball parse the output to try to find some temp file: no luck. The VNC version I'm using is this one: $ vncviewer -version VNC Viewer Free Edition 4.1.1 for X - built Jan 30 2009 19:33:16 Copyright (C) 2002-2005 RealVNC Ltd. No matter how much data is coming from the Mac, there should be plenty of memory (4 GB of ram) so there's really no reason to swap like crazy. This is driving me mad. Any help as to how I could solve this problem is most welcome because this is literally driving me nuts.

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  • Current wisdom on SQL Server and Hyperthreading?

    - by BradC
    Lots of articles out there (see Slava Oks's original SQL 2000 article and Kevin Kline's SQL 2005 update) recommend disabling hyperthreading on SQL servers, or at least testing your specific workload before enabling it on your servers. This issue is gradually becoming less relevant as true multi-core processors replace hyperthreaded ones, but what's the current wisdom on this issue? Does this advice change any with SQL 2005 64-bit, or SQL 2008, or Windows Server 2008? Ideally, this should be tested in advance in a staging environment, but what about for servers that have already made it into production with HT enabled? How can I tell if performance issues we're experiencing might be related to HT? Is there some specific combination of perfmon counters that might point me in that direction, as opposed to all the other things I normally pursue when working on improving SQL performance? Edit: This is especially attractive because of the potential for an across the board improvement for some of my high-cpu servers, but the client is going to want to see something concrete that helps me identify which servers really could benefit from disabling hyperthreading. Of course, conventional performance troubleshooting is ongoing, but sometimes any little bit helps.

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  • SharePoint Business Connectivity Services (BCS) Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'

    - by g18c
    I am running SharePoint 2010 with SQL 2012, I am trying to get Business Connectivity Services (BCS) running but I am facing a double-hope authentication issue. Everytime I try to connect to the external BCS list created in SharePoint designer, I get the error Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'. In the event viewer on the SQL server I see a login failure for an anonymous user from the SP server IP address. Background information below: I have enabled Kerberos under SharePoint Central admin. I have the following AD domain accounts: SP_Farm - main website pool SP_Services - for SharePoint services (including BCS) SQL_Engine - SQL database engine I then created the following with SetSPN: SetSPN -S http/intranet mydomain\SP_Farm SetSPN -S http/intranet.mydomain.local mydomain\SP_Farm SetSPN -S SPSvc/SPS mydomain\SP_Farm SetSPN -S MSSQLSvc/SQL1 mydomain\SQL_DatabaseEngine SetSPN -S MSSQLSvc/SQL1.mydomain.local mydomain\SQL_DatabaseEngine SetSPN -S MSSQLSvc/SQL1:1433 mydomain\SQL_DatabaseEngine SetSPN -S MSSQLSvc/SQL1.mydomain.local:1433 mydomain\SQL_DatabaseEngine I then delegated the AD accounts for any authentication protocol to the following: SP_Farm - SP_Farm (http service type, intranet) SP_Farm - SQL_DatabaseEngine (MSSQLSvc, sql1) SP_Service - SP_Service (SPSvc) SP_Service - SQL_DatabaseEngine (MSSQLSvc, sql1) I have also checked the WFE is being logged on to with Kerberos, with the WFE server event log showing event ID 4624 with Kerberos authentication, this is OK. The SQL is also showing connections authenticated as Kerberos from the WFE with the following query: Select s.session_id, s.login_name, s.host_name, c.auth_scheme from sys.dm_exec_connections c inner join sys.dm_exec_sessions s on c.session_id = s.session_id Despite the above, credentials are not passed from the client through the SharePoint server to the SQL server, only the anonymous account is used. I get the following error in the WFE server for 'BusinessData' ID 8080: Could not open connection using 'data source=sql1.mydomain.local;initial catalog=MSCRM;integrated security=SSPI;pooling=true;persist security info=false' in App Domain '/LM/W3SVC/1848937658/ROOT-1-129922939694071446'. The full exception text is: Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'. If I set a username and password with the Secure Store Service and set the external list to use the impersonated credentials, the list works. Any ideas what I have missed and what can be tried next?

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  • Eclipse: Slow startup time

    - by ct2k7
    Hello, I've got Eclipse 3.6.1 on my MacBook Air (2010), and I'm getting slowish startup times. Well, slow, compared to my Desktop, which is somewhat less powerful and a few years old). The startup generally takes 15 seconds, and of this, 4 is spent just on the Eclipse splash screen, before Eclipse loads anything. No projects are open at startup. Here's a copy of my eclipse.ini. -startup ../../../plugins/org.eclipse.equinox.launcher_1.1.0.v20100507.jar --launcher.library ../../../plugins/org.eclipse.equinox.launcher.cocoa.macosx.x86_64_1.1.1.R36x_v20100810 -showsplash org.eclipse.platform --launcher.XXMaxPermSize 512m --launcher.defaultAction openFile -vmargs -Xms256m -Xmx512m -Xdock:icon=../Resources/Eclipse.icns -XstartOnFirstThread -Dorg.eclipse.swt.internal.carbon.smallFonts -Dosgi.requiredJavaVersion=1.6 -Xverify:none -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabled -XX:+CMSPermGenSweepingEnabled -XX:+UnlockExperimentalVMOptions -XX:+AggressiveOpts -XX:+StringCache -XX:+UseFastAccessorMethods -XX:+UseLargePages -XX:LargePageSizeInBytes=4m -XX:AllocatePrefetchLines=1 -XX:AllocatePrefetchStyle=1 -Dide.gc=true The problem doesn't seem to be related to plugins - I've disabled the ones which I don't need, and regardless of this configuration or whether all of them are selected on startup, it only takes 1second to load the plugins. I'm running Eclipse 3.6.1 Cocoa x64 build (vanilla) with the Zend Studio plugin. The machine has 4GB RAM, an SSD with over 64% free space, 1.6GHz (4MB L2 Cache). OS is Mac OS X 10.6.6, latest Java available, 1.6. For comparison, my Desktop, an old P4 3GHZ (512K L2 Cache) with a 7200RPM drive, under 40% free space, Eclipse (same config) loads in under 7 seconds, consistently. Note, this one is a Windows machine, with latest Java installed.

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