# client can't use find checks

**URL:** <https://discourse.sensu.io/t/client-cant-use-find-checks/213>\
**Category:** Sensu Classic (EOL)\
**Created:** [June 25, 2014, 7:52pm UTC](https://discourse.sensu.io/t/client-cant-use-find-checks/213 "2014-06-25T19:52:29Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![Scott\_Buchanan](https://avatars.discourse-cdn.com/v4/letter/s/e47c2d/32.png) [@Scott\_Buchanan](https://discourse.sensu.io/u/Scott_Buchanan)\
**Post date:** [June 25, 2014, 7:52pm UTC](https://discourse.sensu.io/t/client-cant-use-find-checks/213/1 "2014-06-25T19:52:29Z")

</div>

my set up is a sensu client running on an Ubuntu 14.04 and the sensu server running on centos6.5 both installed/configured with the sensu puppet module.

my checks are all defined as “standalone:false” and the default of false for “safemode” is left.

my client can find the server and visa versa and tries to run the appropriate checks for its subscription etc. however it can’t seem to find the actual plugins.

The output I get is “output: sh: 1: /etc/sensu/plugins/check\_procs\_pgrep: not found”

If I add a file on the client named /etc/sensu/plugins/check\_procs\_pgrep it executes that check no problem butt I was under the impression that checks could exist on the server only. Am I wrong?

I feel like there is just some small parameter I’m missing or something.

Thanks

---

<div class="post-metadata">

**Author:** ![Mojo](https://avatars.discourse-cdn.com/v4/letter/m/85f322/32.png) [@Mojo](https://discourse.sensu.io/u/Mojo)\
**Post date:** [June 26, 2014, 3:41am UTC](https://discourse.sensu.io/t/client-cant-use-find-checks/213/2 "2014-06-26T03:41:29Z")

</div>

As you’ve discovered, the check itself is executed by the client, which is running on the client machine. The plugin has to exist there.

The json config for the check has to be in both locations. The server needs it to generate check requests.

The plugin code itself only has to be on the client, where it’s run.

Mojo

> **···**
>
> On Wed, Jun 25, 2014 at 12:52 PM, Scott Buchanan [scott.x.buchanan@gmail.com](mailto:scott.x.buchanan@gmail.com) wrote:
> 
> > my set up is a sensu client running on an Ubuntu 14.04 and the sensu server running on centos6.5 both installed/configured with the sensu puppet module.
> 
> > my checks are all defined as “standalone:false” and the default of false for “safemode” is left.
> 
> > 
> 
> > my client can find the server and visa versa and tries to run the appropriate checks for its subscription etc. however it can’t seem to find the actual plugins.
> 
> > 
> 
> > The output I get is “output: sh: 1: /etc/sensu/plugins/check\_procs\_pgrep: not found”
> 
> > 
> 
> > If I add a file on the client named /etc/sensu/plugins/check\_procs\_pgrep it executes that check no problem butt I was under the impression that checks could exist on the server only. Am I wrong?
> 
> > 
> 
> > I feel like there is just some small parameter I’m missing or something.
> 
> > 
> 
> > Thanks

---

<div class="post-metadata">

**Author:** ![Scott\_Buchanan](https://avatars.discourse-cdn.com/v4/letter/s/e47c2d/32.png) [@Scott\_Buchanan](https://discourse.sensu.io/u/Scott_Buchanan)\
**Post date:** [June 26, 2014, 6:45am UTC](https://discourse.sensu.io/t/client-cant-use-find-checks/213/3 "2014-06-26T06:45:38Z")

</div>

Hey Morris,

That makes sense and thats what I initially assumed was the case but as I started looking at sensu in more depth I read the FAQ which contains the following:

> **···**
>
> * * *
> 
> ### Do checks need to exist on the client?
> 
> No. They only need to be defined on the Sensu server(s), but can be  
> defined on the client to override certain check definition attributes.  
> Another case where a check needs to be present on the client is when  
> it is being defined as a standalone check. In `safe mode` the check  
> has to exist on both the client and the server.
> 
> * * *
> 
> Am I wrong in taking this to mean that the checks (like the actual check\_http file) only need to exist on the server? I guess its just talking about the check definitions?
> 
> On Wednesday, June 25, 2014 8:41:29 PM UTC-7, Morris Jones wrote:
> 
> > As you’ve discovered, the check itself is executed by the client, which is running on the client machine. The plugin has to exist there.
> 
> > The json config for the check has to be in both locations. The server needs it to generate check requests.
> 
> > The plugin code itself only has to be on the client, where it’s run.
> 
> > Mojo
> 
> > On Wed, Jun 25, 2014 at 12:52 PM, Scott Buchanan [scott.x....@gmail.com](mailto:scott.x....@gmail.com) wrote:
> > 
> > > my set up is a sensu client running on an Ubuntu 14.04 and the sensu server running on centos6.5 both installed/configured with the sensu puppet module.
> 
> > > my checks are all defined as “standalone:false” and the default of false for “safemode” is left.
> 
> > >
> 
> > > my client can find the server and visa versa and tries to run the appropriate checks for its subscription etc. however it can’t seem to find the actual plugins.
> 
> > >
> 
> > > The output I get is “output: sh: 1: /etc/sensu/plugins/check\_procs\_pgrep: not found”
> 
> > >
> 
> > > If I add a file on the client named /etc/sensu/plugins/check\_procs\_pgrep it executes that check no problem butt I was under the impression that checks could exist on the server only. Am I wrong?
> 
> > >
> 
> > > I feel like there is just some small parameter I’m missing or something.
> 
> > >
> 
> > > Thanks
> 
> >

---

<div class="post-metadata">

**Author:** ![Kyle\_Anderson](https://avatars.discourse-cdn.com/v4/letter/k/e5b9ba/32.png) [@Kyle\_Anderson](https://discourse.sensu.io/u/Kyle_Anderson)\
**Post date:** [June 26, 2014, 2:46pm UTC](https://discourse.sensu.io/t/client-cant-use-find-checks/213/4 "2014-06-26T14:46:29Z")

</div>

Yes you were incorrect (but not your fault, imho). Yes it is talking  
about check definitions.

> <https://github.com/sensu/sensu-docs/pull/100>
>
> prevents handle\_when from showing up as a top-level link in the enterprise docum…entation menu

> **···**
>
> On Wed, Jun 25, 2014 at 11:45 PM, Scott Buchanan \<scott.x.buchanan@gmail.com\> wrote:
> 
> > Hey Morris,
> > 
> > That makes sense and thats what I initially assumed was the case but as I  
> > started looking at sensu in more depth I read the FAQ which contains the  
> > following:
> > 
> > ------
> > 
> > Do checks need to exist on the client?
> > 
> > No. They only need to be defined on the Sensu server(s), but can be defined  
> > on the client to override certain check definition attributes. Another case  
> > where a check needs to be present on the client is when it is being defined  
> > as a standalone check. In safe mode the check has to exist on both the  
> > client and the server.
> > 
> > ------
> > 
> > Am I wrong in taking this to mean that the checks (like the actual  
> > check\_http file) only need to exist on the server? I guess its just talking  
> > about the check definitions?
> > 
> > On Wednesday, June 25, 2014 8:41:29 PM UTC-7, Morris Jones wrote:
> > 
> > > As you've discovered, the check itself is executed by the client, which is  
> > > running on the client machine. The plugin has to exist there.
> > > 
> > > The json config for the check has to be in both locations. The server  
> > > needs it to generate check requests.
> > > 
> > > The plugin code itself only has to be on the client, where it's run.
> > > 
> > > Mojo
> > > 
> > > On Wed, Jun 25, 2014 at 12:52 PM, Scott Buchanan \<scott.x....@gmail.com\> \>\> wrote:
> > > 
> > > > my set up is a sensu client running on an Ubuntu 14.04 and the sensu  
> > > > server running on centos6.5 both installed/configured with the sensu puppet  
> > > > module.
> > > > 
> > > > my checks are all defined as "standalone:false" and the default of false  
> > > > for "safemode" is left.
> > > > 
> > > > my client can find the server and visa versa and tries to run the  
> > > > appropriate checks for its subscription etc. however it can't seem to find  
> > > > the actual plugins.
> > > > 
> > > > The output I get is "output: sh: 1: /etc/sensu/plugins/check\_procs\_pgrep:  
> > > > not found"
> > > > 
> > > > If I add a file on the client named /etc/sensu/plugins/check\_procs\_pgrep  
> > > > it executes that check no problem butt I was under the impression that  
> > > > checks could exist on the server only. Am I wrong?
> > > > 
> > > > I feel like there is just some small parameter I'm missing or something.
> > > > 
> > > > Thanks

---

<div class="post-metadata">

**Author:** ![Scott\_Buchanan](https://avatars.discourse-cdn.com/v4/letter/s/e47c2d/32.png) [@Scott\_Buchanan](https://discourse.sensu.io/u/Scott_Buchanan)\
**Post date:** [June 26, 2014, 6:19pm UTC](https://discourse.sensu.io/t/client-cant-use-find-checks/213/5 "2014-06-26T18:19:59Z")

</div>

cool, thanks Kyle. Thats quite a bit more explicit.

> **···**
>
> On Thursday, June 26, 2014 7:46:32 AM UTC-7, Kyle Anderson wrote:
> 
> > Yes you were incorrect (but not your fault, imho). Yes it is talking
> > 
> > about check definitions.
> > 
> > [https://github.com/sensu/sensu-docs/pull/100](https://github.com/sensu/sensu-docs/pull/100)
> > 
> > On Wed, Jun 25, 2014 at 11:45 PM, Scott Buchanan \> \> [scott.x....@gmail.com](mailto:scott.x....@gmail.com) wrote:
> > 
> > > Hey Morris,
> > 
> > > 
> > 
> > > That makes sense and thats what I initially assumed was the case but as I
> > 
> > > started looking at sensu in more depth I read the FAQ which contains the
> > 
> > > following:
> > 
> > > 
> > 
> > > * * *
> > 
> > > 
> > 
> > > Do checks need to exist on the client?
> > 
> > > 
> > 
> > > No. They only need to be defined on the Sensu server(s), but can be defined
> > 
> > > on the client to override certain check definition attributes. Another case
> > 
> > > where a check needs to be present on the client is when it is being defined
> > 
> > > as a standalone check. In safe mode the check has to exist on both the
> > 
> > > client and the server.
> > 
> > > 
> > 
> > > * * *
> > 
> > > 
> > 
> > > Am I wrong in taking this to mean that the checks (like the actual
> > 
> > > check\_http file) only need to exist on the server? I guess its just talking
> > 
> > > about the check definitions?
> > 
> > > 
> > 
> > > 
> > 
> > > On Wednesday, June 25, 2014 8:41:29 PM UTC-7, Morris Jones wrote:
> > 
> > > >
> > 
> > > > As you’ve discovered, the check itself is executed by the client, which is
> > 
> > > > running on the client machine. The plugin has to exist there.
> > 
> > > >
> > 
> > > > The json config for the check has to be in both locations. The server
> > 
> > > > needs it to generate check requests.
> > 
> > > >
> > 
> > > > The plugin code itself only has to be on the client, where it’s run.
> > 
> > > >
> > 
> > > > Mojo
> > 
> > > >
> > 
> > > >
> > 
> > > > On Wed, Jun 25, 2014 at 12:52 PM, Scott Buchanan [scott.x....@gmail.com](mailto:scott.x....@gmail.com) \> \> \>\> wrote:
> > 
> > > > >
> > 
> > > > > my set up is a sensu client running on an Ubuntu 14.04 and the sensu
> > 
> > > > > server running on centos6.5 both installed/configured with the sensu puppet
> > 
> > > > > module.
> > 
> > > > >
> > 
> > > > > my checks are all defined as “standalone:false” and the default of false
> > 
> > > > > for “safemode” is left.
> > 
> > > > >
> > 
> > > > > my client can find the server and visa versa and tries to run the
> > 
> > > > > appropriate checks for its subscription etc. however it can’t seem to find
> > 
> > > > > the actual plugins.
> > 
> > > > >
> > 
> > > > > The output I get is "output: sh: 1: /etc/sensu/plugins/check\_procs\_pgrep:
> > 
> > > > > not found"
> > 
> > > > >
> > 
> > > > > If I add a file on the client named /etc/sensu/plugins/check\_procs\_pgrep
> > 
> > > > > it executes that check no problem butt I was under the impression that
> > 
> > > > > checks could exist on the server only. Am I wrong?
> > 
> > > > >
> > 
> > > > > I feel like there is just some small parameter I’m missing or something.
> > 
> > > > >
> > 
> > > > > Thanks
> > 
> > > >
> > 
> > > >
> > 
> > >