zabbix-users — For general discussions

Re: [Zabbix-users] Email alert on log change

[Todd B. <tb...@gm...>]

You need:

1) an item to track the md5 of the file
2) a trigger to go off if the md5 changes
3) an action to e-mail if the trigger goes off

On Thu, Feb 16, 2017 at 12:21 PM, Guus Snijders <gsn...@gm...> wrote:

> Op 16 feb. 2017 18:05 schreef "Michael Nielsen" <mic...@gm...>:
>
> Should I create a trigger for it, or?
>
> On Thu, Feb 16, 2017 at 5:42 PM, REGIS Thierry <thi...@do...>
> wrote:
>
>> [md5]
>>
>
> Trigger: yes, because you need to tell Zabbix what to do.
>
>
> Mvg, Guus Snijders
>
>
> ------------------------------------------------------------
> ------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
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>

Re: [Zabbix-users] Email alert on log change

[Guus S. <gsn...@gm...>]

Op 16 feb. 2017 18:05 schreef "Michael Nielsen" <mic...@gm...>:

Should I create a trigger for it, or?

On Thu, Feb 16, 2017 at 5:42 PM, REGIS Thierry <thi...@do...>
wrote:

> [md5]
>

Trigger: yes, because you need to tell Zabbix what to do.


Mvg, Guus Snijders

Re: [Zabbix-users] Email alert on log change

[Michael N. <mic...@gm...>]

Should I create a trigger for it, or?

On Thu, Feb 16, 2017 at 5:42 PM, REGIS Thierry <thi...@do...>
wrote:

> Hi
>
>
>
> You can just use the md5 of the file ( zabbix agent item ), if the md5 as
> changed, then the files has changed .
>
>
>
> thierry
>
>
>
> *De :* Michael Nielsen [mailto:mic...@gm...]
> *Envoyé :* jeudi 16 février 2017 16:51
> *À :* zab...@li...
> *Objet :* [Zabbix-users] Email alert on log change
>
>
>
> I've created a item for my host, which looks for changes in a log-file.
>
>
>
> Is it possible to simply get an e-mail if the log file changes, not
> looking for specific string in the file but simply if a line as added?
>

[Zabbix-users] Email alert on log change

[Michael N. <mic...@gm...>]

I've created a item for my host, which looks for changes in a log-file.

Is it possible to simply get an e-mail if the log file changes, not looking
for specific string in the file but simply if a line as added?

Re: [Zabbix-users] Slide show through hosts

[Rob P. <r.p...@gm...>]

Hi Joost / Michael

You are correct about Grafana, I use this functionality myself and it works
very well with Zabbix data.

You also have templating functionality within Grafana, which allows you to
define a dashboard and have the metrics show per host/group selected from
the templated items, which will makes the graphs/dashboards per host very
quick to set up.

http://docs.grafana.org/reference/templating/

Hope this helps.

Rob

On 15 February 2017 at 12:00, Heer, Joost de <j.d...@zu...> wrote:

> Hello Michael,
>
>
>
> Check out Grafana, it has slideshow support, at least if I interpret the
> description of ‘Playlist’ (http://docs.grafana.org/reference/playlist/)
> correctly.
>
>
>
> Joost
>
>
>
> *From:* Michael Nielsen [mailto:mic...@gm...]
> *Sent:* woensdag 15 februari 2017 9:28
> *To:* zab...@li...
> *Subject:* [Zabbix-users] Slide show through hosts
>
>
>
> I've created a screen in Zabbix which used dynamic elements, so I can
> choose host dynamically.
>
> I would like a slide show which use that screen and slides through all
> hosts, but it seems impossible.
>
>
>
> I'm only able to select host manually in the slide show, not cycling
> through all hosts.
>
>
>
> Can this be done - without manually creating the same screen for all hosts?
>
>  ------------------------------
> *Disclaimer*
>
> *Attentie*
> Vanaf 1 juli 2015 is Zuyderland de naam van onze zorgorganisatie die sinds
> 1 januari 2015 de tijdelijke naam Atrium-Orbis droeg.
>
> Dit bericht is geprivilegieerd en kan vertrouwelijke informatie bevatten.
> Aan dit bericht kunnen geen rechten worden ontleend. Het bericht is alleen
> bestemd voor de geadresseerde. Indien dit bericht niet voor u is bestemd,
> verzoeken wij u dit onmiddellijk aan ons te melden en de inhoud van dit
> bericht te vernietigen.
>
> This message is privileged and may contain confidential information. This
> message is intented solely for the addressee. If you have received this
> message in error, please inform us immediately and delete its contents.
>
> Van de Zuyderland zorgorganisatie maken deel uit: Stichting Zuyderland
> Medisch Centrum KvK 62375644 / Stichting Zuyderland Zorg KvK 14126551 /
> Zuyderland Geestelijke Gezondheidszorg BV KvK 14125866 / Zuyderland
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> huidige handelsnaam Orbis Huishoudelijke Hulp gebruikt).
> ------------------------------
>
>
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>

Re: [Zabbix-users] Slide show through hosts

[Heer, J. d. <j.d...@zu...>]

Hello Michael,

Check out Grafana, it has slideshow support, at least if I interpret the description of ‘Playlist’ (http://docs.grafana.org/reference/playlist/) correctly.

Joost

From: Michael Nielsen [mailto:mic...@gm...]
Sent: woensdag 15 februari 2017 9:28
To: zab...@li...
Subject: [Zabbix-users] Slide show through hosts

I've created a screen in Zabbix which used dynamic elements, so I can choose host dynamically.
I would like a slide show which use that screen and slides through all hosts, but it seems impossible.

I'm only able to select host manually in the slide show, not cycling through all hosts.

Can this be done - without manually creating the same screen for all hosts?
</PRE>
<font size="1">
<HR>
<b>Disclaimer</b><br><br>

<b>Attentie</b><br>
Vanaf 1 juli 2015 is Zuyderland de naam van onze zorgorganisatie die sinds 1 januari 2015 de tijdelijke naam Atrium-Orbis droeg. 
<br><br>

Dit bericht is geprivilegieerd en kan vertrouwelijke informatie bevatten. Aan dit bericht kunnen geen rechten worden ontleend. Het bericht is alleen bestemd voor de geadresseerde. Indien dit bericht niet voor u is bestemd, verzoeken wij u dit onmiddellijk aan ons te melden en de inhoud van dit bericht te vernietigen.<br><br>

This message is privileged and may contain confidential information. This message is intented solely for the addressee. If you have received this message in error, please inform us immediately and delete its contents. 
<br><br>

Van de Zuyderland zorgorganisatie maken deel uit: 
Stichting Zuyderland Medisch Centrum KvK 62375644  / Stichting Zuyderland Zorg KvK 14126551 / Zuyderland Geestelijke Gezondheidszorg BV KvK 14125866 / Zuyderland Zorgcentra BV KvK 14125865 / Zuyderland Jeugdgezondheidszorg BV KvK 14125869 / Zuyderland Thuiszorg BV KvK 51437848 (tot 01.01.2016 wordt de huidige handelsnaam Orbis Thuiszorg Westelijke Mijnstreek gebruikt) /  Holding ZMS BV KvK 14087788 / BV Exploitatie Zorgboulevard KvK 14093927 / Parking Atrium BV KvK 14068180 / Orbis Thuiszorg BV KvK 14125868/ Zuyderland Huishoudelijke Hulp BV, KvK 14091172 (tot 01.01.2016 wordt de huidige handelsnaam Orbis Huishoudelijke Hulp gebruikt).
<HR>

Re: [Zabbix-users] Slide show through hosts

[Alexei V. <ale...@za...>]

Hi Michael,

Zabbix does not support this functionality out of the box. You may consider writing a Perl/Python/PHP/whatever script, which would communicate through API to create and update such slide shows automatically.

Kind regards,
Alexei


> On 15 Feb 2017, at 10:27, Michael Nielsen <mic...@gm...> wrote:
> 
> I've created a screen in Zabbix which used dynamic elements, so I can choose host dynamically.
> I would like a slide show which use that screen and slides through all hosts, but it seems impossible.
> 
> I'm only able to select host manually in the slide show, not cycling through all hosts.
> 
> Can this be done - without manually creating the same screen for all hosts?
> ------------------------------------------------------------------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot_______________________________________________
> Zabbix-users mailing list
> Zab...@li...
> https://lists.sourceforge.net/lists/listinfo/zabbix-users

[Zabbix-users] Slide show through hosts

[Michael N. <mic...@gm...>]

I've created a screen in Zabbix which used dynamic elements, so I can
choose host dynamically.
I would like a slide show which use that screen and slides through all
hosts, but it seems impossible.

I'm only able to select host manually in the slide show, not cycling
through all hosts.

Can this be done - without manually creating the same screen for all hosts?

Re: [Zabbix-users] Avoiding long keys with system.run

[Volker F. <vol...@gm...>]

On 10.02.2017 09:43, Brian Candler wrote:
> On 10/02/2017 08:04, Alexei Vladishev wrote:
>> Note that Zabbix agents support parameter ‘Alias’ that can be used to
>> create shorter aliases for very long item keys or user parameters. It
>> may be helpful sometimes.
>
> In this case, if I wanted to push out Alias settings to the zabbix
> agent, I could equally just push out UserParameter.
>
> But thanks for pointing me to Alias because the example given is helpful:
>
> https://www.zabbix.com/documentation/3.2/manual/appendix/config/zabbix_agentd
>
> That is: I could use the internal vfs.file.regexp instead of shelling
> out to grep.

vfs.file.regmatch even! But again, you will most likely have a 
permission problem there.

Volker


> Cheers,
>
> Brian.
>
>
> ------------------------------------------------------------------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
> _______________________________________________
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>

Re: [Zabbix-users] Avoiding long keys with system.run

[Brian C. <b.c...@po...>]

On 10/02/2017 08:04, Alexei Vladishev wrote:
> Note that Zabbix agents support parameter ‘Alias’ that can be used to 
> create shorter aliases for very long item keys or user parameters. It 
> may be helpful sometimes.

In this case, if I wanted to push out Alias settings to the zabbix 
agent, I could equally just push out UserParameter.

But thanks for pointing me to Alias because the example given is helpful:

https://www.zabbix.com/documentation/3.2/manual/appendix/config/zabbix_agentd

That is: I could use the internal vfs.file.regexp instead of shelling 
out to grep.

Cheers,

Brian.

Re: [Zabbix-users] Avoiding long keys with system.run

[Alexei V. <ale...@za...>]

Hello,

Note that Zabbix agents support parameter ‘Alias’ that can be used to create shorter aliases for very long item keys or user parameters. It may be helpful sometimes.

Kind regards,
Alexei

> On 8 Feb 2017, at 13:32, Brian Candler <b.c...@po...> wrote:
> 
> Hello,
> 
> I have a question about sensible deployment of Zabbix.
> 
> I've found that a simple way to check certain conditions is to create an item which runs a remote command on the host. For example, if I want a check that a host has password authentication disabled, I can create a template with an item like this:
> 
> Type: Zabbix Agent
> Key: system.run["grep '^PasswordAuthentication no' /etc/ssh/sshd_config | wc -l"]
> 
> This is simple to implement, but the problem is that the *key* used to refer to that data is that very long string.  If I want to write a trigger for it, the condition looks something like this:
> {Linux Security Compliance Rules:system.run["grep '^PasswordAuthentication no' /etc/ssh/sshd_config | wc -l"].last()}=0
> 
> 
> This doesn't feel right. I'm duplicating the long string which runs the command. If I decided to change the implementation of the PasswordAuthentication check, I'd have to change any related triggers too (although as they're likely in the same template, that's not too bad).
> Have I missed a trick here? Is there a way to define a command to run on the remote system, but give it a shorter key name?
> Thanks,
> 
> Brian.

Re: [Zabbix-users] Returning an error message from an externalscript

[Volker F. <vol...@gm...>]

You could trapper the error to a different item in case of failure. You 
could have a generic item for that host, you would use as trap item for 
error messages for all your items of this kind. Just return the error 
message to this text item and respond to this error messages as you see fit.

Greetings,

Volker

Am 2017-02-08 um 12:48 schrieb Brian Candler:
> Suppose I write a custom external script
> /usr/lib/zabbix/externalscripts/foo.sh and create an item for it like this:
>
> Type: External Script
> Key: foo.sh[{HOST.IP}]
>
> The result from the script is normally numeric (let's say a response
> time), and I might want to graph this or alert on the value exceeding a
> threshold.
>
> However it can also return an error status as a text string. There might
> be several different error strings (e.g. "Connection failed", "DNS
> resolution failed", "Unexpected response: 501"). I want to send out
> alerts in those conditions too, and I want the alerts to contain the
> message returned by the script.
>
> What's the best way to implement this, in terms of what the script
> outputs, and what the corresponding item type is in Zabbix?
>
> The options I can see:
>
> (1) I could configure it with "Type of information: Numeric (float)",
> but then I don't know what happens when the script outputs an error message
>
> (2) I could configure it as "Type of information: Text". Then I can
> write actions which match numeric-only or non-numeric values, but that
> requires regexp checks and it seems pretty messy; I'm also not sure I
> can compare a text value to a numeric threshold.
>
> Presumably this is a very common situation, so what's the recommended
> way to deal with it?
>
> I've read the documentation here:
> https://www.zabbix.com/documentation/3.2/manual/config/items/itemtypes/external
>
> I note that Zabbix has a concept of "unsupported" value, but it doesn't
> say how an external script could return this value (empty string?
> Non-zero exit code?) nor how an error string could be associated with an
> unsupported value and included in an alert action.
>
> Thanks,
>
> Brian.
>
> ------------------------------------------------------------------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
> _______________________________________________
> Zabbix-users mailing list
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> https://lists.sourceforge.net/lists/listinfo/zabbix-users
>

Re: [Zabbix-users] Avoiding long keys with system.run

[Brian C. <b.c...@po...>]

 > It's worth saying that at least GNU grep has a -c option.

That's nice - thank you!  OSX (BSD grep) has it too.

 > However, zabbix will usually not be allowed to read from this file 
anyway.

I don't see why not. However this is on Ubuntu. In RHEL, perhaps there 
is a SELinux policy which forbids it?

Cheers,

Brian.

Re: [Zabbix-users] Avoiding long keys with system.run

[Volker F. <vol...@gm...>]

It's worth saying that at least GNU grep has a -c option. However, 
zabbix will usually not be allowed to read from this file anyway.

Greetings,

Volker

On 08.02.2017 12:32, Brian Candler wrote:
> Hello,
>
> I have a question about sensible deployment of Zabbix.
>
> I've found that a simple way to check certain conditions is to create an
> item which runs a remote command on the host. For example, if I want a
> check that a host has password authentication disabled, I can create a
> template with an item like this:
>
> Type: Zabbix Agent
> Key: system.run["grep '^PasswordAuthentication no' /etc/ssh/sshd_config
> | wc -l"]
>
> This is simple to implement, but the problem is that the *key* used to
> refer to that data is that very long string.  If I want to write a
> trigger for it, the condition looks something like this:
>
> {Linux Security Compliance Rules:system.run["grep
> '^PasswordAuthentication no' /etc/ssh/sshd_config | wc -l"].last()}=0
>
> This doesn't feel right. I'm duplicating the long string which runs the
> command. If I decided to change the implementation of the
> PasswordAuthentication check, I'd have to change any related triggers
> too (although as they're likely in the same template, that's not too bad).
>
> Have I missed a trick here? Is there a way to define a command to run on
> the remote system, but give it a shorter key name?
>
> Thanks,
>
> Brian.
>
>
>
> ------------------------------------------------------------------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
>
>
>
> _______________________________________________
> Zabbix-users mailing list
> Zab...@li...
> https://lists.sourceforge.net/lists/listinfo/zabbix-users
>

Re: [Zabbix-users] Checking services on host with no interfaces

[Brian C. <b.c...@po...>]

On 09/02/2017 11:02, Guus Snijders wrote:
>
>     I understand, but is there a way to stop Zabbix attempting to open
>     a TCP
>     connection to the non-existent agent?  I guess I could block it with
>     iptables, but I wondered if there was a cleaner way.
>
>
> I assumed zabbix would only connect to query configured items. Seeing 
> your reaction, Zabbix connects anyway, even when there is nothing to do?
Interesting - I hadn't even considered that.  I assumed that it would 
contact the agent at least to update the inventory (although you can set 
inventory mode to 'manual')

However, tcpdump confirms that this doesn't happen: if only service 
checks are configured, I don't see any connections to TCP 10050.

Thank you for pointing me in the right direction!

Regards,

Brian.

Re: [Zabbix-users] Checking services on host with no interfaces

[Guus S. <gsn...@gm...>]

Op 9 feb. 2017 10:52 schreef "Brian Candler" <b.c...@po...>:

On 09/02/2017 07:56, Michael Loginov wrote:
> You can add such a host with its real IP or DNS as agent interface.
> Then You should use simple checks. They're provided by zabbix server
> itself and thus You need no agent installed and available.

I understand, but is there a way to stop Zabbix attempting to open a TCP
connection to the non-existent agent?  I guess I could block it with
iptables, but I wondered if there was a cleaner way.


I assumed zabbix would only connect to query configured items. Seeing your
reaction, Zabbix connects anyway, even when there is nothing to do?


Mvg, Guus Snijders

Re: [Zabbix-users] Checking services on host with no interfaces

[Brian C. <b.c...@po...>]

On 09/02/2017 07:56, Michael Loginov wrote:
> You can add such a host with its real IP or DNS as agent interface. 
> Then You should use simple checks. They're provided by zabbix server 
> itself and thus You need no agent installed and available.

I understand, but is there a way to stop Zabbix attempting to open a TCP 
connection to the non-existent agent?  I guess I could block it with 
iptables, but I wondered if there was a cleaner way.

Perhaps there is a case for a "null/passive" interface, or a "ping-only" 
interface?

Cheers,

Brian.

Re: [Zabbix-users] Checking services on host with no interfaces

[Michael L. <mcs...@gm...>]

You can add such a host with its real IP or DNS as agent interface. Then
You should use simple checks. They're provided by zabbix server itself and
thus You need no agent installed and available.

2017-02-08 18:18 GMT+03:00 Brian Candler <b.c...@po...>:

> Zabbix doesn't let me add a host with no interfaces: i.e. no Zabbix
> agent, no SNMP, no JMX, and no IPMI.
>
> However I want to test services on a host that I have no administrative
> access to - e.g. test DNS responses from a third-party authoritative
> nameserver, or test HTTP response from a cloud service.
>
> What's the best way to model this in Zabbix?
>
> I could create items and triggers against the Zabbix host itself. But
> it's not ideal - if there's a failure, it's a failure of the remote
> service, not a failure of the zabbix host.  Also, I'd like to be able to
> template the checks with e.g. {HOST.IP} and apply the same template to
> multiple hosts.
>
> I could add the agent interface anyway, with the name/ip of the actual
> host, but then I'd be making spurious connections to it on port 10050,
> which is impolite to say the least (and at worst might be considered an
> attack).
>
> Any other options?
>
> Thanks,
>
> Brian.
>
> ------------------------------------------------------------
> ------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
> _______________________________________________
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> Zab...@li...
> https://lists.sourceforge.net/lists/listinfo/zabbix-users
>



-- 
С уважением,
Логинов М.А.

mcs...@gm...
+7 (915) 2493122

Re: [Zabbix-users] Zabbix Agent on SoftLayer Virtual machine

[Guus S. <gsn...@gm...>]

Op 8 feb. 2017 16:34 schreef "Michael Nielsen" <mic...@gm...>:

Created a new item in the template which uses vm.memory.size[free] gives me
the value for free memory.
Sorry. Thought available was free memory, but things makes much more sense
now. Also Zabbix :)


It's a Linux feature actually[1] ; ).

Free memory == mem currently not used
Available == if a process tries hard enough, this is how much RAM it can
get. (After clearing buffers, cache, etc).

You'll see some similar stuff with the cpu (load vs usage).


1 possibly the same goes for other OS's, I just happen to know this from
Linux.


Mvg, Guus Snijders

Re: [Zabbix-users] Zabbix Agent on SoftLayer Virtual machine

[Michael N. <mic...@gm...>]

Created a new item in the template which uses vm.memory.size[free] gives me
the value for free memory.
Sorry. Thought available was free memory, but things makes much more sense
now. Also Zabbix :)

On Wed, Feb 8, 2017 at 3:55 PM, Michael Nielsen <mic...@gm...>
wrote:

> Tried to clone the Template OS Linux: Available memory and are getting:
> Received value [91.951591] is not suitable for value type [Numeric
> (unsigned)] and data type [Decimal]
>
> Simply changes [available] to [pavailable]
>
> On Wed, Feb 8, 2017 at 3:04 PM, Michael Nielsen <mic...@gm...>
> wrote:
>
>> It seems the template are using
>> vm.memory.size[total]
>> and
>> vm.memory.size[available]
>>
>>
>> On Wed, Feb 8, 2017 at 2:59 PM, Michael Nielsen <mic...@gm...>
>> wrote:
>>
>>> Hmm, simply used the "Template Linux OS". That has some memory data in
>>> it.
>>>
>>> On Wed, Feb 8, 2017 at 11:08 AM, Jeon Woosung <jeo...@gm...>
>>> wrote:
>>>
>>>> Have you used "pused" instead of "pavailable"?
>>>>
>>>> 2017. 2. 8. 오후 5:13에 "Michael Nielsen" <mic...@gm...>님이 작성:
>>>>
>>>>> Running free -m gives me:
>>>>>
>>>>>              total       used       free     shared    buffers
>>>>> cached
>>>>>
>>>>> Mem:          3958       2518       1440          8        147
>>>>> 2179
>>>>>
>>>>> It is the used 2.5Gb and free 1.5Gb I would like Zabbix to show.
>>>>>
>>>>> Zabbix gives me:
>>>>>
>>>>> Available memory 2017-02-08 08:06:30 3.55 GB -4.71 MB Graph
>>>>> Free swap space 2017-02-08 08:06:12 2 GB Graph
>>>>> Free swap space in % 2017-02-08 08:06:23 100 % Graph
>>>>> Total memory 2017-02-08 07:08:16 3.87 GB Graph
>>>>> Total swap space 2017-02-08 07:08:17 2 GB Graph
>>>>>
>>>>> So not the same as free -m
>>>>>
>>>>>
>>>>> On Tue, Feb 7, 2017 at 8:28 AM, Michael Nielsen <mic...@gm...>
>>>>> wrote:
>>>>>
>>>>>> Thank you. :)
>>>>>> I'll play around with zabbix.
>>>>>>
>>>>>> On Monday, February 6, 2017, Guus Snijders <gsn...@gm...>
>>>>>> wrote:
>>>>>>
>>>>>>> Op 6 feb. 2017 22:34 schreef "Michael Nielsen" <mic...@gm...
>>>>>>> >:
>>>>>>>
>>>>>>> I see.
>>>>>>> Is there a way to see memory used (as regular understood?) or free
>>>>>>> memory which applications can use?
>>>>>>>
>>>>>>>
>>>>>>> Sure, start with free -m, study it's output (can be confusing!) so
>>>>>>> you'll get some feeling for the different fields.
>>>>>>>
>>>>>>> I have one VM with 4GB allowed.
>>>>>>> Running top in the command line tells me 2,5 is used and there's 1,5
>>>>>>> available.
>>>>>>> This is what I want have shown in zabbix  graph.
>>>>>>>
>>>>>>>
>>>>>>> Can't tell from the top of my head, sry.
>>>>>>>
>>>>>>> Luckily, the agent has good documentation, so find out which info
>>>>>>> (metrics) you want and then check the the wiki for supported items. Worst
>>>>>>> case, it's simple to write a one-liner that gives the info, but the agent
>>>>>>> probably already builtin ;).
>>>>>>>
>>>>>>> It could very well be something like mem.avail, but that's just a
>>>>>>> wild guess.
>>>>>>>
>>>>>>> Note, this is one of the best ways to get to know Zabbix; starting
>>>>>>> with standard templates and then rolling your own.
>>>>>>>
>>>>>>>
>>>>>>> Just my € 0,02
>>>>>>>
>>>>>>> Mvg, Guus Snijders
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>
>>>>> ------------------------------------------------------------
>>>>> ------------------
>>>>> Check out the vibrant tech community on one of the world's most
>>>>> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
>>>>> _______________________________________________
>>>>> Zabbix-users mailing list
>>>>> Zab...@li...
>>>>> https://lists.sourceforge.net/lists/listinfo/zabbix-users
>>>>>
>>>>>
>>>
>>
>

[Zabbix-users] Checking services on host with no interfaces

[Brian C. <b.c...@po...>]

Zabbix doesn't let me add a host with no interfaces: i.e. no Zabbix 
agent, no SNMP, no JMX, and no IPMI.

However I want to test services on a host that I have no administrative 
access to - e.g. test DNS responses from a third-party authoritative 
nameserver, or test HTTP response from a cloud service.

What's the best way to model this in Zabbix?

I could create items and triggers against the Zabbix host itself. But 
it's not ideal - if there's a failure, it's a failure of the remote 
service, not a failure of the zabbix host.  Also, I'd like to be able to 
template the checks with e.g. {HOST.IP} and apply the same template to 
multiple hosts.

I could add the agent interface anyway, with the name/ip of the actual 
host, but then I'd be making spurious connections to it on port 10050, 
which is impolite to say the least (and at worst might be considered an 
attack).

Any other options?

Thanks,

Brian.

Re: [Zabbix-users] Zabbix Agent on SoftLayer Virtual machine

[Michael N. <mic...@gm...>]

Tried to clone the Template OS Linux: Available memory and are getting:
Received value [91.951591] is not suitable for value type [Numeric
(unsigned)] and data type [Decimal]

Simply changes [available] to [pavailable]

On Wed, Feb 8, 2017 at 3:04 PM, Michael Nielsen <mic...@gm...>
wrote:

> It seems the template are using
> vm.memory.size[total]
> and
> vm.memory.size[available]
>
>
> On Wed, Feb 8, 2017 at 2:59 PM, Michael Nielsen <mic...@gm...>
> wrote:
>
>> Hmm, simply used the "Template Linux OS". That has some memory data in it.
>>
>> On Wed, Feb 8, 2017 at 11:08 AM, Jeon Woosung <jeo...@gm...>
>> wrote:
>>
>>> Have you used "pused" instead of "pavailable"?
>>>
>>> 2017. 2. 8. 오후 5:13에 "Michael Nielsen" <mic...@gm...>님이 작성:
>>>
>>>> Running free -m gives me:
>>>>
>>>>              total       used       free     shared    buffers
>>>> cached
>>>>
>>>> Mem:          3958       2518       1440          8        147
>>>> 2179
>>>>
>>>> It is the used 2.5Gb and free 1.5Gb I would like Zabbix to show.
>>>>
>>>> Zabbix gives me:
>>>>
>>>> Available memory 2017-02-08 08:06:30 3.55 GB -4.71 MB Graph
>>>> Free swap space 2017-02-08 08:06:12 2 GB Graph
>>>> Free swap space in % 2017-02-08 08:06:23 100 % Graph
>>>> Total memory 2017-02-08 07:08:16 3.87 GB Graph
>>>> Total swap space 2017-02-08 07:08:17 2 GB Graph
>>>>
>>>> So not the same as free -m
>>>>
>>>>
>>>> On Tue, Feb 7, 2017 at 8:28 AM, Michael Nielsen <mic...@gm...>
>>>> wrote:
>>>>
>>>>> Thank you. :)
>>>>> I'll play around with zabbix.
>>>>>
>>>>> On Monday, February 6, 2017, Guus Snijders <gsn...@gm...>
>>>>> wrote:
>>>>>
>>>>>> Op 6 feb. 2017 22:34 schreef "Michael Nielsen" <mic...@gm...
>>>>>> >:
>>>>>>
>>>>>> I see.
>>>>>> Is there a way to see memory used (as regular understood?) or free
>>>>>> memory which applications can use?
>>>>>>
>>>>>>
>>>>>> Sure, start with free -m, study it's output (can be confusing!) so
>>>>>> you'll get some feeling for the different fields.
>>>>>>
>>>>>> I have one VM with 4GB allowed.
>>>>>> Running top in the command line tells me 2,5 is used and there's 1,5
>>>>>> available.
>>>>>> This is what I want have shown in zabbix  graph.
>>>>>>
>>>>>>
>>>>>> Can't tell from the top of my head, sry.
>>>>>>
>>>>>> Luckily, the agent has good documentation, so find out which info
>>>>>> (metrics) you want and then check the the wiki for supported items. Worst
>>>>>> case, it's simple to write a one-liner that gives the info, but the agent
>>>>>> probably already builtin ;).
>>>>>>
>>>>>> It could very well be something like mem.avail, but that's just a
>>>>>> wild guess.
>>>>>>
>>>>>> Note, this is one of the best ways to get to know Zabbix; starting
>>>>>> with standard templates and then rolling your own.
>>>>>>
>>>>>>
>>>>>> Just my € 0,02
>>>>>>
>>>>>> Mvg, Guus Snijders
>>>>>>
>>>>>>
>>>>>>
>>>>
>>>> ------------------------------------------------------------
>>>> ------------------
>>>> Check out the vibrant tech community on one of the world's most
>>>> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
>>>> _______________________________________________
>>>> Zabbix-users mailing list
>>>> Zab...@li...
>>>> https://lists.sourceforge.net/lists/listinfo/zabbix-users
>>>>
>>>>
>>
>

Re: [Zabbix-users] Avoiding long keys with system.run

[Michael L. <mcs...@gm...>]

You can use UserParameter instead and give it nice short key.

2017-02-08 14:32 GMT+03:00 Brian Candler <b.c...@po...>:

> Hello,
>
> I have a question about sensible deployment of Zabbix.
>
> I've found that a simple way to check certain conditions is to create an
> item which runs a remote command on the host. For example, if I want a
> check that a host has password authentication disabled, I can create a
> template with an item like this:
>
> Type: Zabbix Agent
> Key: system.run["grep '^PasswordAuthentication no' /etc/ssh/sshd_config |
> wc -l"]
>
> This is simple to implement, but the problem is that the *key* used to
> refer to that data is that very long string.  If I want to write a trigger
> for it, the condition looks something like this:
>
> {Linux Security Compliance Rules:system.run["grep '^PasswordAuthentication
> no' /etc/ssh/sshd_config | wc -l"].last()}=0
>
> This doesn't feel right. I'm duplicating the long string which runs the
> command. If I decided to change the implementation of the
> PasswordAuthentication check, I'd have to change any related triggers too
> (although as they're likely in the same template, that's not too bad).
>
> Have I missed a trick here? Is there a way to define a command to run on
> the remote system, but give it a shorter key name?
> Thanks,
>
> Brian.
>
>
> ------------------------------------------------------------
> ------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
> _______________________________________________
> Zabbix-users mailing list
> Zab...@li...
> https://lists.sourceforge.net/lists/listinfo/zabbix-users
>
>


-- 
С уважением,
Логинов М.А.

mcs...@gm...
+7 (915) 2493122

Re: [Zabbix-users] Returning an error message from an externalscript

[Todd B. <tb...@gm...>]

I personally always code for these in my scripts in the commands it calls,
return a numeric value, and have a numeric code for any possible errors.
If I worry I might get an error I'm unaware of, I also have a catch all
(usually a 255) that's mapped to "unknown".

On Wed, Feb 8, 2017 at 9:06 AM, Brian Candler <b.c...@po...> wrote:

> On 08/02/2017 11:48, Brian Candler wrote:
> > I note that Zabbix has a concept of "unsupported" value, but it
> > doesn't say how an external script could return this value (empty
> > string? Non-zero exit code?) nor how an error string could be
> > associated with an unsupported value and included in an alert action.
>
> Ah, it looks like maybe I am looking for this new feature in
> (not-yet-released) 3.4.0:
>
> https://www.zabbix.com/documentation/3.4/manual/
> appendix/command_execution#exit_code_checking
>
> "Any exit code that is different from 0 is considered as execution
> failure."
>
> Technically, execution failure (of the script itself) is not the same as
> "bad response to test" (from the remote host); but I don't think that
> matters here.
>
>
> ------------------------------------------------------------
> ------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
> _______________________________________________
> Zabbix-users mailing list
> Zab...@li...
> https://lists.sourceforge.net/lists/listinfo/zabbix-users
>

Re: [Zabbix-users] Returning an error message from an externalscript

[Guus S. <gsn...@gm...>]

Op 8 feb. 2017 13:03 schreef "Brian Candler" <b.c...@po...>:

Suppose I write a custom external script
/usr/lib/zabbix/externalscripts/foo.sh and create an item for it like this:

Type: External Script
Key: foo.sh[{HOST.IP}]

The result from the script is normally numeric (let's say a response
time), and I might want to graph this or alert on the value exceeding a
threshold.

However it can also return an error status as a text string. There might
be several different error strings (e.g. "Connection failed", "DNS
resolution failed", "Unexpected response: 501"). I want to send out
alerts in those conditions too, and I want the alerts to contain the
message returned by the script.

What's the best way to implement this, in terms of what the script
outputs, and what the corresponding item type is in Zabbix?


The best is to set your script to output custom error codes.
If the usual output is a response time, you could use negative numbers as
error codes. Don't overdo it though. Use 2 or 3 codes for expected errors
and for example code 0 for unexpected cases.

This way your script stays readable and your zabbix config too. I have one
case where there are 5 possible codes returned. That seemed like a good
idea then, but the result was complicated graphs & triggers.
It works great, but in hindsight I should have limited it to 3: running,
maitenance and error;
maitenance: down, but we're working on it
Error: needs attention.
Running: all ok ;)

In my (still limited) experience, those 3 are all I really need to know for
most services.


Mvg, Guus Snijders