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In addition to the extensive documentation in our official guide, we provide some practical information here for convenience. We encourage you to read and understand the following articles nevertheless.

LAST TESTED ON CHECKMK 2.2.0P8

Table of Contents

Step-by-step guide

Prerequisites

  • A user with sufficient rights (the automation user would do out of the box)
  • Checkmk's server hostname (or IP)
  • The site which holds the agent
  • The agent you want to download (i.e., OS & hash or hostname)

The easiest way to find the OS and has, is to navigate to the agent bakery and hover the cursor over the installation package:

Screenshot of the Windows, linux, solaris section of the agent bakery. Image highlights the location of the linux debian file download.

If you're not able to fetch the hash via the browser, you can access it via CLI: 

root@linux# su - mysite
OMD[mysite]:~$ ls var/check_mk/agents/linux_deb/packages/
1ae46a9ab42f290b  1ae46a9ab42f290b.conf  1ae46a9ab42f290b.sig  8107877152463cf2  8107877152463cf2.conf  8107877152463cf2.sig

Download via REST API

httpie (recommended)

Install httpie on the system where you want to download the agent.

Download by hash value

The following is an example script, that you can use to download the agent.

#!/bin/bash
HOST_NAME="$MYCHECKMKSERVER"
SITE_NAME="$MYSITE"
API_URL="http://$HOST_NAME/$SITE_NAME/check_mk/api/1.0"
 
USERNAME="$AUTOMATION_USER"
PASSWORD="$AUTOMATION_SECRET"
 
http --json GET "$API_URL/domain-types/agent/actions/download_by_hash/invoke" \
    "Authorization: Bearer $USERNAME $PASSWORD" \
    "Accept: application/octet-stream" \
    agent_hash=="<hash<"\
    os_type=="linux_deb" \
    --download

Download by hostname

The following is an example script, that you can use to download the agent.

#!/bin/bash
HOST_NAME="$MYCHECKMKSERVER"
SITE_NAME="$MYSITE"
API_URL="http://$HOST_NAME/$SITE_NAME/check_mk/api/1.0"
 
USERNAME="$AUTOMATION_USER"
PASSWORD="$AUTOMATION_SECRET"

   http --json GET "$API_URL/domain-types/agent/actions/download_by_host/invoke" \
    "Authorization: Bearer $USERNAME $PASSWORD" \
    "Accept: application/octet-stream" \
    host_name=="localhost"\
    os_type=="linux_deb" \
    --download

curl

Download by hash value

The following is an example script, that you can use to download the agent.

#!/bin/bash
HOST_NAME="$MYCHECKMKSERVER"
SITE_NAME="$MYSITE"
API_URL="http://$HOST_NAME/$SITE_NAME/check_mk/api/1.0"
 
USERNAME="$AUTOMATION_USER"
PASSWORD="$AUTOMATION_SECRET"

curl \
  -G \
  --request GET \
  --write-out "\nxxx-status_code=%{http_code}\n" \
  --header "Authorization: Bearer $USERNAME $PASSWORD" \
  --header "Accept: application/octet-stream" \
  --data-urlencode 'agent_type=host_name' \
  --data-urlencode 'host_name=local' \
  --data-urlencode 'os_type=linux_tgz' \
  -o myagent.tgz \
  "$API_URL/domain-types/agent/actions/download_by_host/invoke"

Download by hostname

The following is an example script, that you can use to download the agent.

#!/bin/bash
HOST_NAME="$MYCHECKMKSERVER"
SITE_NAME="$MYSITE"
API_URL="http://$HOST_NAME/$SITE_NAME/check_mk/api/1.0"
 
USERNAME="$AUTOMATION_USER"
PASSWORD="$AUTOMATION_SECRET"

curl \
  -G \
  --request GET \
  --write-out "\nxxx-status_code=%{http_code}\n" \
  --header "Authorization: Bearer $USERNAME $PASSWORD" \
  --header "Accept: application/octet-stream" \
  --data-urlencode 'agent_type=host_name' \
  --data-urlencode 'host_name=local' \
  --data-urlencode 'os_type=linux_tgz' \
  -o myagent.tgz \
  "$API_URL/domain-types/agent/actions/download_by_host/invoke"


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