I have the server up and running and ~50 VMs online, all is working well. socket systemctl status cmk-agent-ctl-daemon. ColinP November 12, 2022, 12:44pm 1. mydomain. agent_pairing") to their role. 1. 5. 2. As suggested in another post i read i checked:-that port 8000 is open-omd config show | grep AGENT_RECEIVER show port 8000The registration then aborts, since we cannot continue without knowing the correct port. In order to register at a Checkmk site, the agent controller ( cmk-agent-ctl) needs to know, among others, the name of the server where the site is running and a port. 0p12. But the agent controller now periodically reads its config to check whether it is in pull or push mode – so it might take up to three minutes until SSL works after a registration. ColinP November 12, 2022, 12:44pm 1. 1. I created the folder manually and changed ownership, and now the registration. Yes I did use the” cmk-agent-ctl register command, after that I got this message. ╰─$ sudo cmk-agent-ctl status Version: 2. 0 adds the Agent Controller and new features to the agent program. 1. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. example. 1. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. 04. 0. 0-1_all. echo y|sudo cmk-agent-ctl register --hostname vmansible01 –server vmcheckmk01. Agent Controller is not running, no config files can be found in the systemd directory and within xinetd. Linux: cmk-agent-ctl register --server meinserver. 2. 2 system. exe" register --hostname s3mo-tape. 0 adds the Agent Controller and new features to the agent script. But if cmk-agent-ctl cannot be started, access fails. CMK version: 2. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. socket --now Issue the following command to register the host with your Checkmk server. Just in case: We are prepared for cases where the agent controller cannot be started or. As for all other server operating systems, Checkmk therefore also provides its own agent for Windows, an agent program that is both minimalistic and secure. tsi: Getting target agent configuration for host ‘localhost’ from deployment serverHi, looking for a windows variable to use to automate agent registration for 200+ hosts that queries hosts in “lowercase” as opposed to “uppercase” (yes our hosts are configured in lower case in Checkmk)So please stop and disable the services for the new agent controller: systemctl stop cmk-agent-ctl-daemon. com. 1 and the site to 2. For this, however, the Agent Controller must be started as a background process (daemon) by the init system on the host on which it is to be installed. error: The subcommand ‘register --trust-cert’ wasn’t recognized Did you mean ‘register’? If you believe you received this message in error, try re-running with ‘cmk-agent-ctl. Contact an admin if you think this should be re-opened. 0. Ich registriere den Agent : sudo cmk-agent-ctl register --hostname hlcmk --server 10. 0p24 to 2. We’ll come back to you to ask for. 1 Like. Installed the agent on a Server (Windows and Ubuntu) Registered the agent with the following command: cmk-agent-ctl register --hostname --server --site --user automation --password. CMK 2. The register command cmk-agent-ctl register often gets confused with the Agent update registration cmk-agent-update register, but these are two different registration types: one for TLS encryption and one for registering automatic updates (Agent Bakery, cee). In your case. OK, let’s figure out who is doing what. /root/bin and make sure that /root/bin is in the PATH and before /usr/bin_ install the checkmk agent deb; wait for a few seconds (sleep 5) cp /root/bin/cmk-agent-ctl /usr/bin/ systemctl start cmk-agent-ctl-daemon. Whether the host is configured for the pull mode (all editions) or the push mode (only the Cloud Edition) makes no difference for the command examples. mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. ERROR [cmk_agent_ctl] Failed to run as user 'cmk-agent'. gerhards. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. but this just ended in automation2 searching for automation accounts secrets, removed automation2. Ok, so the user I’m using to do the agent registration. 1. The Windows agent of Checkmk version 2. gerhards. CMK agent is up and running, host is added to Check MK server and now I want to set up TLS connection. I am also running Puppet so automation is a thing. For more information try --help Command for registration. It’s hard to tell where exactly it comes from. 0 Agent socket: inoperational (!!)The agent control use the port 8000 for communication. 2. mit cmk-agent-ctl help. 6. 04. 0-1_all. in the host run the register checkmk agent. This might be a bug. I get a return with value: 16 The web test connection has a successfull ping but the agent. 0b4_0. CMK Version: 2. com--site FOO --user BAR -. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. Record Keeping Keep a copy of your application and all submitted documents for your records. cfg file, the registration information of the agent controller stays behind on uninstallation. In your case doing proxy. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. 1. g. rs:41: Loaded config from. 0. CMK version: 2. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. socket Then restart your xinetd (or just reboot). apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. After reading the warning message The agent controller is operating in an insecure mode I started to read the docs on what should be done. wants/check-mk-agent. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. For more information try --helpcmk-agent-ctl register --server cmkserver:443 --trust-cert --site cmksite --user username --password password --hostname monitoringhost On Debian 11 if got the following outputTo register the agent, I ran: sudo cmk-agent-ctl register --hostname localhost --server localhost:8001 --site cmk --user cmkadmin That gives: > sudo cmk-agent-ctl status Version: 2. it --server 192. 0p15. 0p9. The controller is executed under the cmk-agent user, which has limited privileges, e. no login shell, and is used only for data transfer. 0. Whether the host is configured for the pull mode (all editions) or the push mode (only the Cloud Edition) makes no difference for the command examples. 0-1_all. 02. 107:8000 --site home -U cmkadmin ERROR [cmk_agent_ctl… One of my hosts is producing this error, while most others register fine: root@sshgateway:~# cmk-agent. The registration against the corresponding slaves works fine and I can see with cmk-agent-ctl status, that the host is registered and in pull-mode now: image 843×285 37. serviceThe REST in the name of the REST API stands for REpresentational State Transfer, and it describes an architecture for the exchange of data on distributed systems — especially for web. Here it makes sense to pass the required registration information directly via the command. Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. After a reboot the cmk-agent-ctl-daemon and the check-mk-agent. 02. cmk -N myserver123 ). Sehr beliebt ist z. cmk-update-agent register -v -H COMPUTERNAME -U register -S xxxxxxxxxxxxxxxxx. The port can be different in your case. 1. If the host is monitored by multiple sites, you must register to all of them. Going from one patch level to another one (like from p16 to p20) basically is: dpkg -i checkmk…new. 0 then you will find the systemd unit files inside. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. CMK version:2. 1 gave 404 Not Found: Host 127. The Linux agent of Checkmk version 2. slice (loaded active) and check_mk. DOMAIN. So if you make any changes to the config file then you need to reload configuration or restart the agent. 0 2. 2 system. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. Checkmk Appliance Cluster. TLD -i SITE-NAME -U USERNAME This worked perfectly fine in CMK 2. Did not fix it. [[email protected] It seems that the host you are trying to register is already registered at the Checkmk site. sh script. Using previous settings from /etc/cmk-update-agent. Thank you very much to assist me on this way! system (system) Closed September 26, 2023, 4:01pm 9. 2 system. The cmk-agent user was sucessfully created. If it is the second option you should review roles & permissions. Der Benutzer cmk-agent wird während der Installation des Agentenpakets. 0. 5. 0 (Blue Onyx) [root@CHECKMK services]# cmk-agent-ctl. TLD -i SITE-NAME -U USERNAME. 0. Rg, ChristianThe Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. Are you aware of any automation scripts/commands methods with registering agent/TLS for over 800+ hosts? Hello together, i got the an Simular Issue after an Upgrade from the 2. Tahnks a lot for your tip. DOMAIN. Haven’t done anything else with the install yet. target. Username: xxxxx@pve. Checkmk Enterprise Edition 2. 1:8655 --site cmk --user cmk_admin. It has to match the actual hostname used by the Checkmk server, found under “Setup” > “Hosts”. domain. Register the host on the Checkmk server by invoking cmk-update-agent register. 04 Command used for registration: cmk-agent-ctl. In order to register at a Checkmk site, the agent controller ( cmk-agent-ctl) needs to know, among others, the name of the server where the site is running and a port. 2. CMK 2. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. So, get this from “omd config show” on your CMK. I am trying to register an agent installed on a Windows Server 2019. I’m running 2. The exact command line is this: cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. I installed the CheckMK Agent on a TrueNAS SCALE host. Finally, in Bake agent packages, activate. This worked perfectly fine in CMK 2. Hi everybody, i’am new to checkmk and trying to configure the agent but getting the same message, i couldn’t understand why. mictlancihuatll. Afterwards, port 6556 should be claimed by. Here is a fix that worked for me, in case anyone else runs into this. For the Linux hosts: Is the agent controller running? ps waux | grep cmk-agent-ctl Might the hosts be limited (by boot parameter) for a strict IPv4 only setup? Or might registration for TLS has been failed? You can check with cmk-agent-ctl status. json to keep the FW as closed as possible – I cannot test it with the bakery, we sadly have to use CRE+Puppet) kai226 June 14, 2023, 11:57am 4. One of my hosts is producing this error, while most others register fine: root@sshgateway:~# cmk-agent-ctl register --hostname gateway. The register command cmk-agent-ctl register often gets confused with the Agent update registration cmk-agent-update register, but these are two different registration types: one for TLS encryption and one for registering automatic updates (Agent Bakery, cee). I want to enable global registration via Hostname for other agents too, so I’ve enabled a nginx-reverseproxy with following settings:Hi, I have a weird problem with 3 nodes (Ubuntu 20. I have around 60 Windows servers which I have checked using a backed agent. 0p15. Hi everyone, below is the output of the “cmk-agent-ctl. The hosts agent supports TLS, but it is not being used. " Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. service: Scheduled restart job, restart counter is at 2. socket), aborting``` If I als run the daemon: ```cmk-agent-ctl daemon &``` It starts responding to status command, but still won't register the node: ```root@adfb306b5d58:/# cmk-agent-ctl status Version: 2. Welcome to Checkmk. Checkmk. 2 Delete all directories/files of the agent controller from the host. Please provide me with the output of: systemctl status check-mk-agent. The cmk-agent user is created during the installation of the agent package. hardware:~#] cmk-agent-ctl. exe” register --site yousitename --server yourcmkserver --user automation --hostname windows_box_hostname --password1. This is in preparation for the 2. p16 OS version: RH8,Windows Server 2019 Error message: I can’t use the cmk-agent-ctl. All commands to be executed on the host to be monitored. OS version: TrueNAS SCALE 22. 0 last week. This can be problematic if you are monitoring the same host from a site running Checkmk version 2. Our Manufacturers. If you want to use the agent in legacy mode, you need to disable cmk-agent-ctl in bakery rules. 4. Redirecting to /bin/systemctl reload xinetd. 04. Open the terminal that you want to monitor on your Linux server. 4. exe” ^. 2 system. service then restart xinitd and tell me about the output of ss -tulpn | grep 6556. 1. 0, that will not be possible. Der Agent Controller cmk-agent-ctl kümmert sich um den Transport der vom Agentenskript gesammelten Daten. 0 or earlier. Copy the cmk-update-agent binary or the cmk_update_agent. 0p15 OS version: TrueNAS SCALE 22. $ sudo systemctl restart cmk-agent-ctl-daemon. 0 2. I get this with no port, or port 800 and 8001. root@kerneltalks # service xinetd reload. The Windows agent. To register a host, users need the following permissions: Agent pairing. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. Segmentation fault (core dumped) The same result also with the all needed parameters for the registration. the check-mk-agent is running (in xinetd mode) - trying to register a client is not possible because the cmk controller is looking for a socket (systemd) [root@jumphost]# cmk-agent-ctl status. trying to register a client is not possible because the cmk controller is looking for a socket (systemd) [root@jumphost]# cmk-agent-ctl status Version: 2. exe . This can be problematic if you are monitoring the same host from a site running Checkmk version 2. Added new host in CMK. We strongly recommend to enable TLS by registering the host to the site (using the cmk-agent-ctl register command on the monitored host). Thx for the quick reply, adding the port gives still the same result: root@paperless-ngx:~# cmk-agent-ctl register --trust-cert -H paperless-ngx. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) I have registered over 100 hosts successfull but something is wrong with this one when I use that command: & 'C:Program Files (x86)checkmkservicecmk-agent-ctl. Sie können zwei Checkmk-Appliances. If it is xinetd remove the. 2. The cmk-agent user was sucessfully created. Agent pairing; Read access to all hosts and folders Since Checkmk version 2. Specify the correct port when calling the registration command. 6 Likes. You might apt-get remove the old Checkmk package when no site is using it any more. 2. Anders (Anders) November 27, 2022, 4:25pm 1 CMK version: 2. To summarize: If you want to customize a Checkmk configuration and activate the changes, in Nagios you will subsequently require: OMD [mysite]:~$ cmk -R. 0. 0 2. 4. Either related to the recent update to p12 or to a migration vom Ubuntu 20 to 22 (new server with new checkmk installation, restored site from backup). The controller is executed under the cmk-agent user, which has limited privileges, e. The hosts agent supports TLS, but it is not being used. We strongly recommend to enable TLS by registering the host to the site (using the `cmk-agent-ctl register` command on the monitored host). Agent pairing; Read access to all hosts and folders; Write access to all hosts and folders; regards. en. 0. 0 or earlier. I am trying to register an agent installed on a Windows Server 2019. MichaelI’m running 2. 2. g. The cmk-agent user was sucessfully created. de:8000 --site mon --user admin. Deutsch. 0. 1. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) I have registered over 100 hosts successfull but something is wrong with this one when I use that command: & 'C:Program Files (x86)checkmkservicecmk-agent-ctl. 0p6. CMK version: 2. 1. This can be problematic if you are monitoring the same host from a site running Checkmk version 2. service should work as expected. 4. The cmk-agent user was sucessfully created. 1. cmk-agent-ctl. com:8000/cmk. 0p20 Debian 11. XXX. If you forward port 9800 to 8000 then you also have to use port 9800 in your register command. Director of Registration and Certification at the address noted below. Thx karnicmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. So now you must de-register, on the host: cmk-agent-ctl delete-all --enable-insecure-connections Then on the CMK server: Properties of host, then menu entry Host > Remove TLS registration Afterwards connections should work albeit insecure. You have three options here: Make the REST API call work. com--site FOO --user BAR --password FOO The new agents at 2. exe to register the Agent Controller. 1. evilguy January 8, 2023, 7:53pm 3. If you use the bakery, the agent was baked with enabled cmk-agent-ctl. g. This is realized by a new component on the monitored hosts: The Checkmk agent controller cmk-agent-ctl. You’ll also need to do something like cmk-agent-ctl register. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. 0/26. . INFO [cmk_agent_ctl::site_spec] Failed to discover agent receiver port using ERROR [cmk_agent_ctl] Failed to discover agent receiver port from Checkmk REST API, both with and Run with verbose output to see errors. mit cmk-agent-ctl help register. 6 I have an external cloud host that I would like to monitor with in-house CMK server. If the host is monitored by multiple sites, you must register to. latest (2. Now you need to register the agnet for TLS handshake. Another gotcha I came across was trying to run the register, make sure you are using admin cmd ( which you are ), then cut and paste the command in full : “C:\Program Files (x86)\checkmk\service\cmk-agent-ctl. 1. Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. 0:8282 --site cmk --user automation --password <RANDOMPASSWORD> Attempting to. Since the machine you’re trying to monitor is still 2. 1 Like. But if cmk-agent-ctl cannot be started, access fails. deb. DOMAIN. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) I have registered over 100 hosts successfull but something is wrong with this one when I use that command: & 'C:Program Files (x86)checkmkservicecmk-agent-ctl. exe" status It also seems that you have multiple sites on your Checkmk server based on port 8001 in the response. This might be a bug. 1. Hosts and CheckMK use a current Debian Bullseye and I use CheckMK Server and Client 2. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. 0p10 OS: linux The hosts agent supports TLS, but it is not being used. The agent-receiver of the first checkmk instance usually listens on port 8000, this is the port you need the agent to register against. Bei der Registrierung der Agents ergibt sich bei beiden Server folgender Fehler: <HOST>:~ # cmk-agent-ctl register --hostname <HOSTNAME> --server 192. 8 KB But the monitoring is not able to query the host anymore: I can’t use the cmk-agent-ctl register command when my host resists on a slave site. register ^. 0b4_0 raw OS: Ubuntu 20. This might be a bug. This port can be found out via omd config > Basics > AGENT_RECEIVER_PORT Of course, this port has to be exposed for the. ss -tulpn | grep 6556 tcp LISTEN 0 4096 *:6556 : users:((“cmk-agent-ctl”,pid=425,fd=9)) On the. to checkmk. Registered and installed a Let’s Encrypt certificate using certbot; I can now access the web UI without a problem using but after setting up the host I can’t install an agent using the following command: cmk-agent-ctl register -H -s monitoring. slice (loaded active) and check_mk. 514. But if cmk-agent-ctl cannot be started, access fails. 6 LTS Package: check-mk-raw-2. This can be problematic if you are monitoring the same host from a site running Checkmk version 2. I try with: cmk-agent-ctl register --hostname MYHOST --server CMKHOST --site MYSITE --user cmkadmin --password ‘MYPASSWORD’ Then I get the message: Thx for the quick reply, adding the port gives still the same result: root@paperless-ngx:~# cmk-agent-ctl register --trust-cert -H paperless-ngx. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. 2. After installation the check_mk_agent service should have started automatically. CMK version: 2. We strongly recommend to enable TLS by registering the host to the site (using the cmk-agent-ctl register command on the monitored host). " Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. 0-1_all. 0p9. it --server 192. B. I created the folder manually and changed ownership, and now the registration. Created symlink /etc/systemd/system/sockets. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. this is initiated by the cloud host contacting CMK server behind our office. state. 1. serviceCan you use the option trust-cert ? Also, what is the systemd version on your system ?So now you must de-register, on the host: cmk-agent-ctl delete-all --enable-insecure-connections Then on the CMK server: Properties of host, then menu entry Host > Remove TLS registration Afterwards connections should work albeit insecure. I created the folder manually and changed ownership, and now the registration. Checkmk Enterprise Edition 2. But before we start with the actual. c:2633). check_für das Abfragen von Webseiten. ╰─$ sudo cmk-agent-ctl status Version: 2. If I try to register it with the command: cmk-agent-ctl register --detect-proxy --hostname FOO --server bla. DOMAIN. 0p20 Ubuntu 20. Then I installed the agent on the server, and registered, and this part finally worked, the server can monitor itself (even if I don’t understand why cmk-agent-ctl register --hostname 127. 0p6.