CMK Pusher

CMK Pusher is a passive push agent extension for Check_MK. At the moment it Linux and Windows. The Windows Agents connects directly with the Check_MK Agent via localhost. This enables Logile Monitoring in Windows.

It uses a PHP JSON API for Communication. If setup correctly all communication will use HTTPS so all Data is SSL Encrypted. Also its possible to use Client based compression.

Installation API (Check_MK Server side)

• Copy the api Directory to your Check_MK Server in the Webserver root directory. (eg. /var/www/html)
• You need PHP Support on your Webserver
• Edit config.inc.php to your needs and create the Spool Directory with the necessary permissions (eg. /opt/cmk-pusher/spool)

Installation CheckMK Check

This check is optional, with this check there is a freshness check possible.

• Copy the check to yout /usr/share/check_mk/checks directory

Installation Linux Agent

• You need the Check_MK Agent installed and you need Python 2.7 and PyCurl Support
• Copy all Files from agent/Linux to a Directory on you Linux Server you want to Monitor (eg. /opt/cmk-pusher)
• Edit the config.ini (Password needs to be the same on the two sides), configure the Client Name (needs to be exactly the same as the configured Host in Check_MK, dont use special characters or whitespaces)
• Create a Cron Entry, the Check_MK Agent needs to be executed as root, add the cron.sh to your crontab to run every Minute

Installation Windows Agent (not more than Beta at the moment) - Option 1 Python Way

• Install the Check_MK Agent (you dont have to install it as service)
• Install Python 2.7 under Windows (and let it add to the PATH)
• Open cmd and Install two packets via pip:

pip install pycurl
pip install pypiwin32

• Open cmd as an Administrator an do postinstall

cd C:\Python27
python scripts\pywin32_postinstall.py -install

• Install it as Service, open cmd as Administrator and run:

python C:\Install\cmk-pusher-agent.py install

• Know you can start and edit the service in the services.msc
• Service will push data every 30 seconds

Installation Windows Agent (not more than Beta at the moment) - Option 2 EXE Way

• Install the Check_MK Agent (you have to install it as service)
• Unpack cmk-pusher-agent.zip to eg. C:\Install
• At the moment, the Config file must be in C:\Install\cmk-agent-pusher\
• Edit the config.ini (Password needs to be the same on the two sides), configure the Client Name (needs to be exactly the same as the configured Host in Check_MK, dont use special characters or whitespaces)
• Edit SERVERHOSTNAME in config.ini it should comply with your SSL Certificate
• Install Service, run cmd as Administrator and run the following command:

c:\Install\cmk-pusher-agent\cmk-pusher-agent.exe install

• Service will push data every 30 seconds

Check_MK Configuration

The easiest way is to create a new tag. For example under agent you can add CMK Pusher withe the tag cmk-pusher. Now add a Datasource Program (eg. in WATO under Individual program call instead of agent access) and add the following line:

cat /opt/cmk-pusher/spool/<HOST>.dump

At the moment this is a very cheap Solution and will be extended eg. with Freshness Check in the near Future. After a few Minutes you should have Data in Check_MK for a Service Discovery.

For Windows Agents you should create a Rule for "System Time" and extend the times for Warning and Critical