Re: [Nagios-users] A couple of Nagios NEB plugin API questions
On 08/09/2012 02:39 PM, Razvan Cojocaru wrote: Yes you can, if you know just a tiny bit about Nagios. It's a pointer to either a host or a service. Which it is depends on the type of callback we're issuing. That was entirely uncalled for. Some of us prefer to ask similarly minded peers where we feel it's not unreasonable to do so, rather than go with the the code is the documentation attitude (which I am not putting down, to each his (or her) own). I thought it obvious both that I've done my homework, and that I am quite able to stand on my own two feet. Apparently I wasn't as clear as I should have been. I didn't mean to be rude. Since you do seem like a clever guy who has indeed done his homework I figured that question was more of a complaint along the lines of this should probably be documented too. Thank you for answering, You're welcome. -- Andreas Ericsson andreas.erics...@op5.se OP5 AB www.op5.se Tel: +46 8-230225 Fax: +46 8-230231 Considering the successes of the wars on alcohol, poverty, drugs and terror, I think we should give some serious thought to declaring war on peace. -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
[Nagios-users] A couple of Nagios NEB plugin API questions
Hello, I've read the NEB Module API document [1], and the nebstructs.h header, but I'd like more details about the members of nebstruct_notification_struct. The document shows the struct definition with no comments, and no example, and there are no comments for the individual members in the nebstructs.h header either. Also, this article [2] suggests that you can pass configuration data to your NEB module with this syntax: broker_module=/usr/local/nagios/bin/testmodule.o config_file=/usr/local/nagios/etc/testmodule.cfg How does one access that configuration data from within the plugin? Via a dedicated callback? By accessing some global data structure within the Nagios core process that loads my module? I thought I'd find this information in the PDF file, but Appendix B: Catalog of Global Nagios Data Structures only says TBA. [1] http://nagios.sourceforge.net/download/contrib/documentation/misc/NEB%202x%20Module%20API.pdf [2] http://searchenterpriselinux.techtarget.com/tip/Managing-events-with-Nagios-Event-Broker Thanks, -- Razvan Cojocaru Linux Development Core Romania 11 Internet Development S.R.L. - Bucharest/Romania Web: www.1und1.de -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
Re: [Nagios-users] A couple of Nagios NEB plugin API questions
On 08/09/2012 08:39 AM, Razvan Cojocaru wrote: Hello, I've read the NEB Module API document [1], and the nebstructs.h header, but I'd like more details about the members of nebstruct_notification_struct. The document shows the struct definition with no comments, and no example, and there are no comments for the individual members in the nebstructs.h header either. Well, the individual members are fairly self-explanatory, don't you think? Ethan's big on mnemonic names, and for a very good reason. You might want to check out some module and use as example though. mod_gearman provides a good resource, as does NDOUtils and Merlin. Livestatus is pretty nifty, but unless you're mentally equipped to follow the tons and tons of C++ boilerplate I advise against using it as anything but an excellent backend to your data. At http://git.op5.org/git/?p=nagios/merlin.git;a=summary you'll find the merlin source-code. If you're not git-literate you might want to download a snapshot. module.c and hooks.c has most of the code that handles nebstruct type objects. Also, this article [2] suggests that you can pass configuration data to your NEB module with this syntax: broker_module=/usr/local/nagios/bin/testmodule.o config_file=/usr/local/nagios/etc/testmodule.cfg How does one access that configuration data from within the plugin? Via a dedicated callback? By accessing some global data structure within the Nagios core process that loads my module? It's the char * argument to your module's nebmodule_init() function. -- Andreas Ericsson andreas.erics...@op5.se OP5 AB www.op5.se Tel: +46 8-230225 Fax: +46 8-230231 Considering the successes of the wars on alcohol, poverty, drugs and terror, I think we should give some serious thought to declaring war on peace. -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
Re: [Nagios-users] A couple of Nagios NEB plugin API questions
Well, the individual members are fairly self-explanatory, don't you think? Ethan's big on mnemonic names, and for a very good reason. Yes, you can glean what they're for from their names, but that's not what I was asking. It's one thing to know that a field called flags should probably be set to some OR-ed or AND-ed bits, and quite another to know what those bits should be or what behaviour they will trigger, for example. And you can't quite glean even that much about what a void *object_ptr does or means. I'll figure out what the docs don't say by reading the code. You might want to check out some module and use as example though. mod_gearman provides a good resource, as does NDOUtils and Merlin. Livestatus is pretty nifty, but unless you're mentally equipped to follow the tons and tons of C++ boilerplate I advise against using it as anything but an excellent backend to your data. At http://git.op5.org/git/?p=nagios/merlin.git;a=summary you'll find the merlin source-code. If you're not git-literate you might want to download a snapshot. module.c and hooks.c has most of the code that handles nebstruct type objects. I'm already going that route, and yes, I am git-literate. Thanks for the suggestions! I didn't get to Merlin yet. broker_module=/usr/local/nagios/bin/testmodule.o config_file=/usr/local/nagios/etc/testmodule.cfg How does one access that configuration data from within the plugin? Via It's the char * argument to your module's nebmodule_init() function. Thanks! But the char * argument of nebmodule_init() passes the command line arguments for the module, i.e.: broker_module=/usr/local/nagios/bin/testmodule.o arguments However, I was asking about accessing data written in a regular Nagios .cfg file. The article I've quoted clearly implies that this can be done; it's possible that they're wrong, but if they're not, I'd like to know extern whattype* what gives me access to the parsed Nagios configuration data. Thanks, -- Razvan Cojocaru Linux Development Core Romania 11 Internet Development S.R.L. - Bucharest/Romania Web: www.1und1.de -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
Re: [Nagios-users] A couple of Nagios NEB plugin API questions
On 08/09/2012 12:16 PM, Razvan Cojocaru wrote: Well, the individual members are fairly self-explanatory, don't you think? Ethan's big on mnemonic names, and for a very good reason. Yes, you can glean what they're for from their names, but that's not what I was asking. It's one thing to know that a field called flags should probably be set to some OR-ed or AND-ed bits, and quite another to know what those bits should be or what behaviour they will trigger, for example. The flags are variations for the callback. All nebstructs have them. And you can't quite glean even that much about what a void *object_ptr does or means. Yes you can, if you know just a tiny bit about Nagios. It's a pointer to either a host or a service. Which it is depends on the type of callback we're issuing. I'll figure out what the docs don't say by reading the code. You might want to check out some module and use as example though. mod_gearman provides a good resource, as does NDOUtils and Merlin. Livestatus is pretty nifty, but unless you're mentally equipped to follow the tons and tons of C++ boilerplate I advise against using it as anything but an excellent backend to your data. At http://git.op5.org/git/?p=nagios/merlin.git;a=summary you'll find the merlin source-code. If you're not git-literate you might want to download a snapshot. module.c and hooks.c has most of the code that handles nebstruct type objects. I'm already going that route, and yes, I am git-literate. Thanks for the suggestions! I didn't get to Merlin yet. broker_module=/usr/local/nagios/bin/testmodule.o config_file=/usr/local/nagios/etc/testmodule.cfg How does one access that configuration data from within the plugin? Via It's the char * argument to your module's nebmodule_init() function. Thanks! But the char * argument of nebmodule_init() passes the command line arguments for the module, i.e.: broker_module=/usr/local/nagios/bin/testmodule.o arguments Yes. I thought your line was just wrapped because it was too long. However, I was asking about accessing data written in a regular Nagios .cfg file. The article I've quoted clearly implies that this can be done; it's possible that they're wrong, but if they're not, I'd like to know extern whattype* what gives me access to the parsed Nagios configuration data. Good question. I just access the global variables after Nagios has parsed them. In Merlin, the module command argument points to a configuration file, which Merlin has its own parser for. You can't add random variables to the Nagios configuration file though, since that'll make Nagios barf rather than passing it on to modules. -- Andreas Ericsson andreas.erics...@op5.se OP5 AB www.op5.se Tel: +46 8-230225 Fax: +46 8-230231 Considering the successes of the wars on alcohol, poverty, drugs and terror, I think we should give some serious thought to declaring war on peace. -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
Re: [Nagios-users] A couple of Nagios NEB plugin API questions
Yes you can, if you know just a tiny bit about Nagios. It's a pointer to either a host or a service. Which it is depends on the type of callback we're issuing. That was entirely uncalled for. Some of us prefer to ask similarly minded peers where we feel it's not unreasonable to do so, rather than go with the the code is the documentation attitude (which I am not putting down, to each his (or her) own). I thought it obvious both that I've done my homework, and that I am quite able to stand on my own two feet. Apparently I wasn't as clear as I should have been. Thank you for answering, -- Razvan Cojocaru Linux Development Core Romania 11 Internet Development S.R.L. - Bucharest/Romania Web: www.1und1.de -- Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ ___ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
