Monitoring Squid Proxy

General
1

Hello,

I use the checkmk version 2.x. Is there a way to monitor a Squid proxy here? There used to be a plugin. Unfortunately, this no longer works with the current checkmk version. Does anyone know of alternatives?

Greetings

Karsten

2

have a look at

There you will find a rewrite of the squid plugin for CMK 2.

1 Like
3

Thanks for the info. The website “https://thl-cmk.hopto.org/gitlab/checkmk/various/squid” is not there, what a pity.

4

@kacon the site should be back online.

5

I heard about a monitoring tool that can notify in case of unexpected downtime’s :joy: :stuck_out_tongue_winking_eye:

1 Like
6

I know one too. Thanks, I was able to download it now and will test it tomorrow. Have a good evening

Karsten

7

Good Morning,

I have installed the plugin and created the rules, including the new agent. Unfortunately, I don’t see any new services on the Squid host. Have I forgotten something?

best Karsten

8

Is it perhaps because I am using checkmk version 2.2?

9

Hi @kacon,

just a quick question. Did you also enable it after installing it? :sweat_smile:

I think it is only 2.1 compatible.
Maybe @thl-cmk can say if it is 2.2 compatible? :slightly_smiling_face:

Regards
Norm

10

of course I have also enabled it

11

CMK 2.2 should be ok.

12

Set levels for Client Requests

Would I need to see these serivces in the host?

  • Set levels for Client Hits
  • Set levels for Server Requests
  • Set levels for Squid CPU usage
  • Set levels for DNS response time
13

just checked with 2.2.x. There seems to be an issue with the bakery, 2.2.x does not copy the squid plugin in the agent package :-(. On 2.1.x its ok. Not sure yet why…

As workaround, you can copy the squid agent plugin from
~/local/share/check_mk/agents/plugins to your squid server under /usr/lib/check_mk_agent/plugins.

14

@kacon the plugin should now work with CMK2.2x as well, at least on my system it does :wink: . After updating you need to bake the agent again.

1 Like
15

Thank you, I will try it out.

16

Did anyone try and did it work?

For me (running CheckMK 2.2.0p12 RAW) it doesn´t.

I copied the “squid” file to /usr/lib/check_mk_agent/plugins and changed the rights - but nothing happend.
I am pretty new to this, so maybe I am doing something wrong ?

17

yes works here :wink:

you can try to run the script localy

sudo /usr/lib/check_mk_agent/plugins/squid

<<<squid:sep(0)>>>
Content-Type: text/plain;charset=utf-8
sample_start_time = 1698510032.974436 (Sat, 28 Oct 2023 16:20:32 GMT)
sample_end_time = 1698510332.983231 (Sat, 28 Oct 2023 16:25:32 GMT)
client_http.requests = 0.013333/sec
client_http.hits = 0.000000/sec
client_http.errors = 0.000000/sec
....

if this works, check on the cmk server as site user

OMD[build]:~$ cmk -d your-squid-host-name | grep -A10 "<<<squid:sep(0)>>>"
<<<squid:sep(0)>>>
Content-Type: text/plain;charset=utf-8
sample_start_time = 1698510212.979360 (Sat, 28 Oct 2023 16:23:32 GMT)
sample_end_time = 1698510512.988730 (Sat, 28 Oct 2023 16:28:32 GMT)
client_http.requests = 0.010000/sec
client_http.hits = 0.000000/sec
client_http.errors = 0.000000/sec
client_http.kbytes_in = 0.000000/sec
client_http.kbytes_out = 0.029999/sec
client_http.all_median_svc_time = 0.000000 seconds
client_http.miss_median_svc_time = 0.000000 seconds

Btw. have you installed the squidclient package on the squid server?

18

Thank you for your reply!

From sudo /usr/lib/check_mk_agent/plugins/squid I get nothing. No output.

19

Check if squidclient is available, if not you need to install it. I.e

sudo apt install squidclient
20

Oh…

>sudo apt install squidclient

That did the trick…
At least for:
sudo /usr/lib/check_mk_agent/plugins/squid

But still no output for:
OMD[mysite]: ~$ cmk -d my-squid-host-name | grep -A10 “<<squid:sep(0)>>”