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  • Server stops responding, can't find issue?

    - by Corey W
    I've had a pretty basic server up and running CentOS with webserver/database, and have noticed that it has locked up a few times in the middle of the night. It seems to happen randomly. When it locks up I can ssh in, (although it seems to hang once connected), but can't access cpanel/whm and have to reboot the server to get everything back up. Checking the messages log I see the below like clockwork every 5minutes 1 second, and then it just stops logging anything until I reboot. I can't seem to find any log showing any issue? Is there somewhere I can check to try to figure out what is happening? Could this be caused by CPU being maxed? Nov 17 08:01:35 s1 pure-ftpd: (__cpanel__service__auth__ftpd__Q13SKrtaCJCHjBezTfU8Iqmsi@127.0.0.1) [INFO] Logout. Nov 17 08:06:36 s1 pure-ftpd: ([email protected]) [INFO] New connection from 127.0.0.1 Nov 17 08:06:36 s1 pure-ftpd: ([email protected]) [INFO] __cpanel__service__auth__ftpd__mxidFBSnQXmR0QzqSxlqrXLIH0CmJ0GPh9bZ5V3 is now l ogged in Nov 17 08:06:37 s1 pure-ftpd: (__cpanel__service__auth__ftpd__mxidBDaCgnqSxlqrXLIH0CmJ0GPh9bZ5V3@127.0.0.1) [INFO] Logout. Nov 17 08:11:37 s1 pure-ftpd: ([email protected]) [INFO] New connection from 127.0.0.1 Nov 17 08:11:38 s1 pure-ftpd: ([email protected]) [INFO] __cpanel__service__auth__ftpd__T4B7F71acf1dsdJSeJHdqKNcbOdpzNnN_GttgcM is now l ogged in Nov 17 08:11:38 s1 pure-ftpd: (__cpanel__service__auth__ftpd__T4B7F71acf1KNcbOdpzNnN_GttgcM@127.0.0.1) [INFO] Logout. Nov 17 08:16:38 s1 pure-ftpd: ([email protected]) [INFO] New connection from 127.0.0.1 Nov 17 08:16:38 s1 pure-ftpd: ([email protected]) [INFO] __cpanel__service__auth__ftpd__W5C1RzumtaNwe4cU8Lt1 is now logged in Nov 17 08:16:38 s1 pure-ftpd: ([email protected]) [INFO] Logout. Nov 17 09:10:58 s1 kernel: imklog 4.6.2, log source = /proc/kmsg started. Nov 17 09:10:58 s1 rsyslogd: [origin software="rsyslogd" swVersion="4.6.2" x-pid="1094" x-info="http://www.rsyslog.com"] (re)start Nov 17 09:10:58 s1 kernel: Initializing cgroup subsys cpuset

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  • Directory listing through FTPS (TLS) is not working

    - by Aron Rotteveel
    We recently switched our server to require TLS for every connection. This is working flawlessly so far, but one of our clients is having problems. Some facts: Server uses Pure-FTPD Server has a passive port range configured Server has no firewall limitations regarding the FTP Client uses WS FTP Client is behind a router Client connects to the same IP as every other, using PASSIVE mode All other clients have no trouble connecting Because of the TLS requirement, connecting using ACTIVE mode is almost not possible, but PASSIVE is working fine for everyone except this specific client. It seems that he is able to connect, but once a LIST command is performed, things go wrong. Log: Finding Host <clienthost> ... Connecting to <serverip:21> Connected to <serverip:21> in 0.020000 seconds, Waiting for Server Response Initializing SSL Session ... 220---------- Welcome to Pure-FTPd [privsep] [TLS] ---------- 220-You are user number 5 of 50 allowed. 220-Local time is now 22:14. Server port: 21. 220-This is a private system - No anonymous login 220-IPv6 connections are also welcome on this server. 220 You will be disconnected after 15 minutes of inactivity. AUTH TLS 234 AUTH TLS OK. SSL session NOT set for reuse SSL Session Started. Host type (1): Automatic Detect USER <user> 331 User <user> OK. Password required PASS (hidden) 230-User <user> has group access to: <user> 230 OK. Current restricted directory is / SYST 215 UNIX Type: L8 Host type (2): Unix (Standard) PBSZ 0 200 PBSZ=0 PROT P 200 Data protection level set to "private" PWD 257 "/" is your current location CWD /public_html 250 OK. Current directory is /public_html PWD257 "/public_html" is your current location TYPE A 200 TYPE is now ASCII PASV 227 Entering Passive Mode (<serverip>,132,100) connecting data channel to <serverip>:132,100(33892) Substituting connection address <serverip> for private address <serverip> from PASV Using external address <customer ext. ip> instead of local address <customer int. ip> for PORT command PORT 82,161,56,225,195,181 200 PORT command successful LIST Error reading response from server. It appears that the connection is dead. Attempting reconnect... Any help is appreciated.

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  • Pure C# open source PCM to Ogg convertor?

    - by Ole Jak
    Microsoft Silverlight 4 is in beta. It supports PCM audio output. It would be madness to stream PCM over internet (for ex in P2P chart webApp) so we need Pure C# open source PCM to Ogg convertor. No unmanaged code, nothing going out of .net sandbox. So does any one know such Pure C# open source PCM to Ogg convertor? What do I need: Open Source Libs for encoding. Tutorials and blog articles on How to do it, about etc. BTW: why Pure C#? - because Silverlight 4 does not support unmanaged or just not C# DLL's. BTW2: this question is similar to this one but it is different because Ogg is Open Source, free while mp3 will not be free until 2010

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  • How can I sandbox Python in pure Python?

    - by Blixt
    I'm developing a web game in pure Python, and want some simple scripting available to allow for more dynamic game content. Game content can be added live by privileged users. It would be nice if the scripting language could be Python. However, it can't run with access to the environment the game runs on since a malicious user could wreak havoc which would be bad. Is it possible to run sandboxed Python in pure Python? If not, are there any open source script interpreters written in pure Python that I could use? The requirements are support for variables, basic conditionals and function calls (not definitions).

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  • pure-specifier on function-definition

    - by bebul
    While compiling on GCC I get the error: pure-specifier on function-definition, but not when I compile the same code using VS2005. class Dummy { //error: pure-specifier on function-definition, VS2005 compiles virtual void Process() = 0 {}; }; But when the definition of this pure virtual function is not inline, it works: class Dummy { virtual void Process() = 0; }; void Dummy::Process() {} //compiles on both GCC and VS2005 What does the error means? Why cannot I do it inline? Is it legal to evade the compile issue as shown in the second code sample?

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  • Wrapping a pure virtual method with multiple arguments with Boost.Python

    - by fallino
    Hello, I followed the "official" tutorial and others but still don't manage to expose this pure virtual method (getPeptide) : ms_mascotresults.hpp class ms_mascotresults { public: ms_mascotresults(ms_mascotresfile &resfile, const unsigned int flags, double minProbability, int maxHitsToReport, const char * unigeneIndexFile, const char * singleHit = 0); ... virtual ms_peptide getPeptide(const int q, const int p) const = 0; } ms_mascotresults.cpp #include <boost/python.hpp> using namespace boost::python; #include "msparser.hpp" // which includes "ms_mascotresults.hpp" using namespace matrix_science; #include <iostream> #include <sstream> struct ms_mascotresults_wrapper : ms_mascotresults, wrapper<ms_mascotresults> { ms_peptide getPeptide(const int q, const int p) { this->get_override("getPeptide")(q); this->get_override("getPeptide")(p); } }; BOOST_PYTHON_MODULE(ms_mascotresults) { class_<ms_mascotresults_wrapper, boost::noncopyable>("ms_mascotresults") .def("getPeptide", pure_virtual(&ms_mascotresults::getPeptide) ) ; } Here are the bjam's errors : /usr/local/boost_1_42_0/boost/python/object/value_holder.hpp:66: error: cannot declare field ‘boost::python::objects::value_holder<ms_mascotresults_wrapper>::m_held’ to be of abstract type ‘ms_mascotresults_wrapper’ ms_mascotresults.cpp:12: note: because the following virtual functions are pure within ‘ms_mascotresults_wrapper’: ... include/ms_mascotresults.hpp:334: note: virtual matrix_science::ms_peptide matrix_science::ms_mascotresults::getPeptide(int, int) const ms_mascotresults.cpp: In constructor ‘ms_mascotresults_wrapper::ms_mascotresults_wrapper()’: ms_mascotresults.cpp:12: error: no matching function for call to ‘matrix_science::ms_mascotresults::ms_mascotresults()’ include/ms_mascotresults.hpp:284: note: candidates are: matrix_science::ms_mascotresults::ms_mascotresults(matrix_science::ms_mascotresfile&, unsigned int, double, int, const char*, const char*) include/ms_mascotresults.hpp:109: note: matrix_science::ms_mascotresults::ms_mascotresults(const matrix_science::ms_mascotresults&) ... /usr/local/boost_1_42_0/boost/python/object/value_holder.hpp: In constructor ‘boost::python::objects::value_holder<Value>::value_holder(PyObject*) [with Value = ms_mascotresults_wrapper]’: /usr/local/boost_1_42_0/boost/python/object/value_holder.hpp:137: note: synthesized method ‘ms_mascotresults_wrapper::ms_mascotresults_wrapper()’ first required here /usr/local/boost_1_42_0/boost/python/object/value_holder.hpp:137: error: cannot allocate an object of abstract type ‘ms_mascotresults_wrapper’ ms_mascotresults.cpp:12: note: since type ‘ms_mascotresults_wrapper’ has pure virtual functions So I tried to change the constructor's signature by : BOOST_PYTHON_MODULE(ms_mascotresults) { //class_<ms_mascotresults_wrapper, boost::noncopyable>("ms_mascotresults") class_<ms_mascotresults_wrapper, boost::noncopyable>("ms_mascotresults", init<ms_mascotresfile &, const unsigned int, double, int, const char *,const char *>()) .def("getPeptide", pure_virtual(&ms_mascotresults::getPeptide) ) Giving these errors : /usr/local/boost_1_42_0/boost/python/object/value_holder.hpp:66: error: cannot declare field ‘boost::python::objects::value_holder<ms_mascotresults_wrapper>::m_held’ to be of abstract type ‘ms_mascotresults_wrapper’ ms_mascotresults.cpp:12: note: because the following virtual functions are pure within ‘ms_mascotresults_wrapper’: include/ms_mascotresults.hpp:334: note: virtual matrix_science::ms_peptide matrix_science::ms_mascotresults::getPeptide(int, int) const ... ms_mascotresults.cpp:24: instantiated from here /usr/local/boost_1_42_0/boost/python/object/value_holder.hpp:137: error: no matching function for call to ‘ms_mascotresults_wrapper::ms_mascotresults_wrapper(matrix_science::ms_mascotresfile&, const unsigned int&, const double&, const int&, const char* const&, const char* const&)’ ms_mascotresults.cpp:12: note: candidates are: ms_mascotresults_wrapper::ms_mascotresults_wrapper(const ms_mascotresults_wrapper&) ms_mascotresults.cpp:12: note: ms_mascotresults_wrapper::ms_mascotresults_wrapper() If I comment the virtual function getPeptide in the .hpp, it builds perfectly with this constructor : class_<ms_mascotresults>("ms_mascotresults", init<ms_mascotresfile &, const unsigned int, double, int, const char *,const char *>() ) So I'm a bit lost...

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  • Rsync: pure Ruby implementation?

    - by peter
    I have a Rsync program Deltacopy with an executable as client and server but would like to replace this if possible with a pure Ruby implementation of Rsync. I found gems like six-rsync and rsync-update but they seem to be no general implementations. I'm looking for a pure Ruby solution, so no executables involved and preferably runnable on multiple OS. If possible a simple sample would be great. I only look for Rsync, no other transfer or backup solutions please.

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  • What is Slotted and pure aloha?

    - by caspert
    So I am having a really hard time understanding slotted and pure aloha. I have understood CSMA/CD fairly well, but that is it. I have the book: Computer networking - a top down approach, but I find the explanation very cryptic and hard to understand. Wikipedia did not help me. Does anyone have a brief "aloha for dummies" explanation? or perhaps a video tutorial? I think I need something visual. I don't need to be able to create the protocol, I just need a general understanding of it.

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  • Boost Python : How to only expose the constructor of a class with virtual (pure & impure) methods

    - by fallino
    Hello, I'm a newbie with Boost::Python but I tried to search on the web to do so I want to expose a 3rd party library to Python. One of the class of the library (.hpp) is composed of a public constructor with arguments a protected constructor and functions various regular functions various pure virtual functions various non pure virtual functions First, I did not succeed in building it without having errors about this protected constructor. I finally commented it. A first question would be : Is there a way to exclude these protected functions since I don't want to expose them ? (I know it's possible and easy with Py++, but I started without using it) Then I tried to expose all of my functions, beginning with the pure virtual ones (commenting them all except one), which wasn't a success too So I finally decided not to expose these virtual functions (which in fact seems logical...), but, here again, I didn't manage building it with a simple constructor with arguments (without no_init). So my second question is : Is there a way to exclude these virtual functions since I don't want to expose them ? Sorry if it seems trivial but I didn't find anything explicit on the web and I need something rather explicit :). Thanks in advance

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  • How to create Python module distribution to gracefully fall-back to pure Python code

    - by Craig McQueen
    I have written a Python module, and I have two versions: a pure Python implementation and a C extension. I've written the __init__.py file so that it tries to import the C extension, and if that fails, it imports the pure Python code (is that reasonable?). Now, I'd like to know what is the best way to distribute this module (e.g. write setup.py) so it can be easily used by people with or without the facility to build, or use, the C extension. My experience is limited but I see two possible cases: User does not have MS Visual Studio, or the GCC compiler suite, installed on their machine, to build the C extension User is running IronPython, Jython, or anything other than CPython. I only have used CPython. So I'm not sure how I could distribute this module so that it would work smoothly and be easy to install on those platforms, if they're unable to use the C extension.

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  • How to create Python module distribution to gracefully fall-back to pure Python code

    - by Craig McQueen
    I have written a Python module, and I have two versions: a pure Python implementation and a C extension. I've written the __init__.py file so that it tries to import the C extension, and if that fails, it imports the pure Python code (is that reasonable?). Now, I'd like to know what is the best way to distribute this module (e.g. write setup.py) so it can be easily used by people with or without the facility to build, or use, the C extension, just by running: python setup.py install My experience is limited, but I see two possible cases: User does not have MS Visual Studio, or the GCC compiler suite, installed on their machine, to build the C extension User is running IronPython, Jython, or anything other than CPython. I only have used CPython. So I'm not sure how I could distribute this module so that it would work smoothly and be easy to install on those platforms, if they're unable to use the C extension.

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  • QML 5.3 iOS compilation of pure QML app

    - by Nathaniel Johnson
    I have an application written in QML. Initially, I used the standard C++ bootstrap for the app. int main(int argc, char *argv[]) { QApplication app(argc, argv); // A bunch of components and data models written in C++ QQmlApplicationEngine engine; engine.load(QUrl(QStringLiteral("qrc:///main.qml"))); return app.exec(); } The bulk of the app is in QML and the more I work with QML, the happier I am with it and the more I feel comfortable converting the C++ pieces to QML. So, it comes to one risk that I wanted to ask about. If I convert the app to a pure QML application like the kind generated by the Qt Quick UI application wizard with no C++ and designed to be run with qmlscene will I be able to compile it for iOS when the time to port it comes or will I end up just converting it back to the C++ loader form? TL;DR Can pure QML (no C++) apps be compiled and run on iOS devices?

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  • How useful is a 'pure' MVC implementation?

    - by Matt1776
    I work at a company that provides custom made 'CRM'-like software. We are currently redesigning/redeveloping the software with the hopes that it will look more modern and be easier to develop and customize for future clients. Currently it takes a long time to customize each new application. There is a presumption that the reason it takes so long is because of the amount of business logic that is present in the 'view' layer. To some extent I can vouch for this being true, but symptoms don't always reliably point out a cause. There was a suggestion that if we just move the business logic to the controller layer and use pure view (we use java J2EE and struts) as in implementing struts tags instead of calling the bean layer and iterating objects right on the jsp - etc etc. Before I start advocating we go forward with this, I wanted to get a feeling for what other people thought. Does a "pure" implementation of the MVC (especially emphasis on decoupling the controller and the view) provide a cleaner, easier to develop and change code base?

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  • Pure sine wave inverter

    - by Nick
    Not exactly programming (sorry) but I think it's pretty close and can be of interest to other programmers. I'm trying to setup a battery power station so that I can work from anywhere. I go surfing a lot and my idea is to be able to work from wherever I can park my car (given there's coverage). So, I'm getting a deep cycle battery, a 240V charger (I'm in Australia), and an inverter. At the back of my laptop it says 19V and 4.62A. From the people I've spoken to that means it consumes about 90W at most. So my inverter needs to be able to output about 100W. Most of them seem to be 200W and up so this shouldn't be a problem. I want to be able run my laptop for 10 hours (plus the 2 hours I get from the laptop battery) straight. According to the people I've spoken to and from what I gather online I need a battery that has the amp hours for my "amp draw". I have no idea how to calculate this but I've been guesstimating. Most deep cycle batteries seem to be classified using amp hours (Ah)... 35Ah, 50Ah, 75Ah, 100Ah, and so on. However the amp hours on those batteries is for a 240V and I seem to be using 19V. According to an expert I spoke to you'd need a 100Ah battery to power a 5A appliance at 240V for 10 hours (you only get about 50% useful power). That to me is 5A * 240V = 100Ah battery. So, naive as I might be I take 240V and divide that by my 19V and reach the conclusion that I can get away with a battery that's about 12 times smaller than that 100Ah. The expert told me I needed a 50Ah battery so that's probably what I'll be getting, but it would be interesting to know what I theoretically would need to power my laptop for 10 hours. As for charging the battery the expert I spoke to said I needed a 3-5A charger to be able to charge that 50Ah battery from flat to full in about 10 hours (I will just leave it plugged in over night). Now to my question. The expert said it's not a matter of "if" more like a guaranteed "when" my computer will stuff up if I don't use a "pure sine wave inverter". From what I gather the power that comes out of that battery is not as clean as the power we get in the socket at home. Apparently it's "square" and the one in the socket is nice and smooth. I've already got an inverter, but it's not "pure". Do I really need to buy the $200-300 pure sine wave inverter or can I get away with something else? Perhaps the laptop adapter that sits in the middle of my laptop power cable already fixes that wave to be nice and smooth? Thanks!

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  • Does Qt support virtual pure slots ?

    - by ereOn
    Hi, My GUI project in Qt has a lot of "configuration pages" classes which all inherit directly from QWidget. Recently, I realized that all these classes share 2 commons slots (loadSettings() and saveSettings()). Regarding this, I have two questions: Does it make sense to write a intermediate base abstract class (lets name it BaseConfigurationPage) with these two slots as virtual pure methods ? (Every possible configuration page will always have these two methods, so I would say "yes") Before I do the heavy change in my code (if I have to) : does Qt support virtual pure slots ? Is there anything I should be aware of ? Here is a code example describing everything: class BaseConfigurationPage : public QWidget { // Some constructor and other methods, irrelevant here. public slots: virtual void loadSettings() = 0; virtual void saveSettings() = 0; }; class GeneralConfigurationPage : public BaseConfigurationPage { // Some constructor and other methods, irrelevant here. public slots: void loadSettings(); void saveSettings(); };

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  • Pure JSP without mixing HTML, by writing html as Java-like code

    - by ADTC
    Please read before answering. This is a fantasy programming technique I'm dreaming up. I want to know if there's anything close in real life. The following JSP page: <% html { head { title {"Pure fantasy";} } body { h1 {"A heading with double quote (\") character";} p {"a paragraph";} String s = "a paragraph in string. the date is "; p { s; new Date().toString(); } table (Border.ZERO, new Padding(27)) { tr { for (int i = 0; i < 10; i++) { td {i;} } } } } } %> could generate the following HTML page: <html> <head> <title>Pure fantasy</title> </head> <body> <h1>A heading with double quote (") character</h1> <p>a paragraph</p> <p>a paragraph in string. the date is 11 December 2012</p> <table border="0" padding="27"> <tr> <td>0</td> <td>1</td> <td>2</td> <td>3</td> <td>4</td> <td>5</td> <td>6</td> <td>7</td> <td>8</td> <td>9</td> </tr> </table> </body> </html> The thing about this fantasy is it reuses the same old Java programming language technique that enable customized keywords used in a way similar to if-else-then, while, try-catch etc to represent html tags in a non-html way that can easily be checked for syntactic correctness, and most importantly can easily be mixed up with regular Java code without being lost in a sea of <%, %>, <%=, out.write(), etc. An added feature is that strings can directly be placed as commands to print out into generated HTML, something Java doesn't support (where pure strings have to be assigned to variables before use). Is there anything in real life that comes close? If not, is it possible to define customized keywords in Java or JSP? Or do I have to create an entirely new programming language for that? What problems do you see with this kind of setup? PS: I know you can use HTML libraries to construct HTML using Java code, but the problem with such libraries is, the source code itself doesn't have a readable HTML representation like the code above does - if you get what I mean.

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  • Abstract classes in shared library

    - by JTom
    Hi, I have an ordinary abstract class that has couple of pure virtual methods. The class itself is a part of the shared library. The compilation of the shared library itself is OK. But when the library is linked to another program that has another class deriving from the abstract one in the shared library and defining the pure virtual methods, I get the following linker error: I compile like this..: g++ -I../path/to/the/library main.cpp derived.cpp -L../path/to/the/library -lsomename -o shared ...and the linker error is: libsomename.so: undefined reference to `AbstractClass::method()' It's like the abstract class cannot access its pure virtual methods but I do not try to make any instance of the abstract class anywhere in the library. What could be the problem?

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  • Suggestions for entering mobile development -- pure iPhone SDK, Android SDK, Mono Touch or Titanium

    - by Tom Cabanski
    I am entering mobile development. I have been working primarily in .NET since 1.0 came out in beta. Before that, I was mostly a C++ and Delphi guy and still dabble in C++ from time to time. I do web apps quite a bit so I am reasonably proficient with Javascript, JQuery and CSS. I have also done a few Java applications. I started web programming with CGI and live mostly in the ASP.NET MVC world these days. I am trying to decide on which platform/OS and tool to select. I am concerned with the size of the market available for my applications as well as the marketibility of the skills I will pick up. The apps I have in mind would work on both phones and pads. Some aspects of what I have in mind will play better on the bigger screens that will be available on pads. Here are the options I am considering: Apple iPhone/iPad using pure Apple SDK (Objective-C) Apple iPhone/iPad using Mono Touch (C#) Android using pure Android SDK (Java) Multiple platforms using something like Titanium to generate native apps from web technologies (HTML, CSS and Javascript) Multiple platforms using HTML5 web applications that run in the browser (HTML, CSS and Javascript). Which option would you choose? Do you have a different suggestion? What are the pros and cons?

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  • ActiveMQ Pure Master / Slave - Out of sync

    - by pico
    What i have : 1 master broker and 1 slave broker both in ActiveMQ 5.4.0 What i use : waitForSlave on master side and failover uri on slave side (in the master connector URI) What i want to do : I want to wait some delay (like 5 seconds) in case of a tiny network failures between master and slave before starting slave transpôrt connectors So i put this in slave config : <broker xmlns="http://activemq.apache.org/schema/core" brokerName="slave" dataDirectory="${activemq.base}/data" useJmx="true" persistent="true" populateJMSXUserID="true" masterConnectorURI="failover://(tcp://master:61616)?initialReconnectDelay=1000&amp;maxReconnectDelay=30000" shutdownOnMasterFailure="false" advisorySupport="false"> It seems to work but after a network hang between master and slave, the slave reconnect successfully and then the master logs a lot of : 2010-10-18 17:08:44,421 | ERROR | Slave Failed | org.apache.activemq.broker.ft.MasterBroker | ActiveMQ Task java.lang.IllegalStateException: Cannot lookup a connection that had not been registered: ID:master-1040-634226732611718750-0:0 at org.apache.activemq.broker.MapTransportConnectionStateRegister.lookupConnectionState(MapTransportConnectionStateRegister.java:93) at org.apache.activemq.broker.TransportConnection.lookupConnectionState(TransportConnection.java:1412) at org.apache.activemq.broker.TransportConnection.processRemoveConsumer(TransportConnection.java:561) at org.apache.activemq.command.RemoveInfo.visit(RemoveInfo.java:76) at org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:309) at org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:185) at org.apache.activemq.transport.ResponseCorrelator.onCommand(ResponseCorrelator.java:116) at org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:69) at org.apache.activemq.transport.vm.VMTransport.iterate(VMTransport.java:218) at org.apache.activemq.thread.DedicatedTaskRunner.runTask(DedicatedTaskRunner.java:98) at org.apache.activemq.thread.DedicatedTaskRunner$1.run(DedicatedTaskRunner.java:36) On the slave side everything is fine. So after that, i've tried to stop the master to see if the slave is capable of turning master after these "network hangs". The master took long time to shutdown (10 seconds) and then some error message appears in slave logs : 2010-10-18 17:09:32,915 | WARN | Async error occurred: java.lang.IllegalStateException: Cannot lookup a connection that had not been registered: ID:master-1049-634226732657812500-0:3 | org.apache.activemq.broker.TransportConnection.Service | VMTransport: vm://slave#5 java.lang.IllegalStateException: Cannot lookup a connection that had not been registered: ID:master-1049-634226732657812500-0:3 at org.apache.activemq.broker.MapTransportConnectionStateRegister.lookupConnectionState(MapTransportConnectionStateRegister.java:93) at org.apache.activemq.broker.TransportConnection.lookupConnectionState(TransportConnection.java:1412) at org.apache.activemq.broker.TransportConnection.processRemoveSession(TransportConnection.java:600) at org.apache.activemq.command.RemoveInfo.visit(RemoveInfo.java:74) at org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:309) at org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:185) at org.apache.activemq.transport.ResponseCorrelator.onCommand(ResponseCorrelator.java:116) at org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:69) at org.apache.activemq.transport.vm.VMTransport.iterate(VMTransport.java:218) at org.apache.activemq.thread.DedicatedTaskRunner.runTask(DedicatedTaskRunner.java:98) at org.apache.activemq.thread.DedicatedTaskRunner$1.run(DedicatedTaskRunner.java:36) Are they any ways to keep my kaha stores (they are individual stores) synchronised? The main problem is that the slave never turn master after a master failure, it stay block on this message : 2010-10-18 17:09:33,681 | WARN | Transport (master/172.21.60.61:61616) failed to tcp://master:61616 , attempting to automatically reconnect due to: java.net.SocketException: Software caused connection abort: socket write error | org.apache.activemq.transport.failover.FailoverTransport | ActiveMQ Transport: tcp://master/172.21.60.61:61616 I'm totally stuck with these syncs problems, any help welcome! Regards

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  • Pure Terminal Server 2003 system hangs

    - by Donovan
    System Profile: IBM Server hardware Windows Ent Server 2003 running terminal services. No Citrix. Max user load: 30 Symptoms: While in the course of normal operation our terminal server will hang up. As far as I can tell there isn't any trigger that's plainly visible yet. The way in witch it hangs may give a clue though. The hang presents its self by users not being able to initiate any new processes. All processes currently loaded into memory work just fine. Example: outlook 2007. You may continue to read email, operate the client and such. Some people don't even realize the hang has occurred for a bit of time. My attempts to troubleshoot have been futile. Reacting to the hang does no good because I can't start any new processes to investigate. After I reboot the server my next instinct would be to begin logging to catch the hang occurring but I'm not sure what to log. Right now I'm attempting to keep process explorer running in case the issue occurs again. Sometimes it happens twice a day, other times, once a week. Anyone have any ideas on how I could set myself up for better success in tracking this problem down? Thanks, Donovan

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  • Create an image of a pure Ubuntu-Installation on Macbook Pro

    - by Stefan Müller
    I'm running Ubuntu 11.10 on my Macbook Pro (Late 2009) as the only operating system, so theres's no Mac OS X oder Bootcamp installed. It runs fine and now i'd like to create an image of the current installation. Unfortunately my Acronis True Image cd doesn't boot on this device and my attempts to create an image with partimage or dd from a bootable ubuntu live cd to a external hd failed ("can't read from block 0"). Are there any others out there with such an installation and if yes: how did you succeed in imaging your partition/device?

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