service: Scheduled restart job, restart counter is at 2. local --server 10. 1But if cmk-agent-ctl cannot be started, access fails. Segmentation fault (core dumped) The same result also with the all needed parameters for the registration. 0) master 1. root@kerneltalks # service xinetd reload. I installed the CheckMK Agent on a TrueNAS SCALE host. Home ; Categories ;Registration indeed is good. 4 --server 1. 1. B. 04 LTS. Wie Sie den Agenten nutzen, erfahren Sie hier. raptorswithhats. NOTE: A registered host will refuse all unencrypted connections. 1. cme and I’m no longer able to register new hosts with an automation user “cmkautomation” that I created a while ago (with role “agent_registration”). deb Now the cmk-agent-ctl-daemon. 5 LTS monitored system (Host) Package: check-mk-agent_2. cmk-update-agent register -v -H COMPUTERNAME -U register -S xxxxxxxxxxxxxxxxx. monitoring. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. 0 or earlier. no login shell, and is used only for data transfer. 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). 1. The client must set the version 0 for the CSRThe 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). deb. 1. 57. 1. If you forward port 9800 to 8000 then you also have to use port 9800 in your register command. sh script. 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. 1 the monitoring data sent from the monitored host to the monitoring server is TLS encrypted and compressed by default. Upon first try, “cmk-agent-ctl register. socket systemctl status cmk-agent-ctl-daemon. 1 agent. service You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. In your case doing proxy. ” failed with this error: "Request failed with code 500 Internal Server Error: Internal Server Error" The registration then aborts, since we cannot continue without knowing the correct port. I’m running 2. If the server you want to monitor and register is the monitoring docker. 0 adds the Agent Controller and new features to the agent script. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. This might be a bug. However if I (faulty) try to register the host to my MAIN site first and THEN register to my slave site it works…The --hostname option of the register command refers to the host to be registered. com:443 --site howtoforge --user cmkadmin So before you take care of the configuration itself, enable the Activation of automatic agent updates option under Setup > General > Global Settings > Automatic Agent Updates: To implement the updates, follow these steps: First open Setup > Agents > Windows, Linux, Solaris, AIX and select Agents > Automatic updates: See Prerequisites for a list. Deutsch. g. It has to match the actual hostname used by the Checkmk server, found under “Setup” > “Hosts”. exe' register -s checkmk. 0. Troubleshooting. But nothing worked. Checkmk Community CMK Agent Controller not working (CentOS 7) - CMK 2. If you use the bakery, the agent was baked with enabled cmk-agent-ctl. To 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. If the host is monitored by multiple sites, you must register to all of them. Hi everyone, below is the output of the “cmk-agent-ctl. 02. Rg, ChristianWindows installer ¶. The Agent Receiver tells the Agent Controller. 0p11 on Debian 11. Redirecting to /bin/systemctl reload xinetd. Welcome to Checkmk. de --site monitoring --user cmkadmin. I created the folder manually and changed ownership, and now the registration. From its very beginning, monitoring Windows servers has been one of the most important tasks performed by Checkmk. New replies are no longer allowed. This is a bug of the client cmk-agent-ctl. Please provide me with the output of: systemctl status check-mk-agent. Wie hier beschrieben, sollten alle Bedingungen für eine TLS encryption erfüllt sein. 2. Sehr beliebt ist z. 0p17. . Anders (Anders) November 27, 2022, 4:25pm 1 CMK version: 2. 2. In your case. eu --site monitoring ^. If I try to register it with the command: cmk-agent-ctl register --detect-proxy --hostname FOO --server bla. g. pem. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. Checkmk. I created the folder manually and changed ownership, and now the registration. 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” register --site yousitename --server yourcmkserver --user automation --hostname windows_box_hostname --password1. cmk-agent-ctl. exe register --hostname HOST --server SERVER: 8001 --site SITE --user USER. 0. 0 last week. I had to add the checkmk user again. 1 Like. From its very beginning, monitoring Windows servers has been one of the most important tasks performed by Checkmk. Thank you very much to assist me on this way! system (system) Closed September 26, 2023, 4:01pm 9. When you have done all this, install the agent again and it will work properly. Ob der Host dabei für den Pull-Modus (alle Editionen) oder den Push-Modus (nur Cloud Edition) konfiguriert ist, macht für die Befehlsbeispiele keinen Unterschied. focal_amd64. 5. service: Scheduled restart job, restart counter is at 2. Hello, I updated my CheckMK installation to firmware 1. Agent Registration (Pairing) for TLS Encryption. deb Now the cmk-agent-ctl-daemon. The cmk-agent user was sucessfully created. The agent control use the port 8000 for communication. You can learn how to use the agent here. But if cmk-agent-ctl cannot be started, access fails. 2. Registration indeed is good. server --site Main --user cmkadmin --verbose erscheint folgendes: image 1902×257 114 KB. 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). Contact an admin if you think this should be re-opened. After a reboot the cmk-agent-ctl-daemon and the check-mk-agent. 04. ” failed with this error: "Request failed with code 500 Internal Server Error: Internal Server Error"Danach erfolgte die Registrierung und der Update Befehl. 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. to switch your agent into SSL mode (and not. I installed the CheckMK Agent on a TrueNAS SCALE host. THaeber • 5 mo. Update: Nervermind. evilguy January 8, 2023, 7:53pm 3. 1. In your case doing proxy. $ sudo systemctl restart cmk-agent-ctl-daemon. 1. but this just ended in automation2 searching for automation accounts secrets, removed automation2. Tested turning off firewall on 2019. 0 OS Version: Appliance 1. 1. Here is a fix that worked for me, in case anyone else runs into this. XXX. 1. com:443 -i cmk --user automation . 168. Did not fix it. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. 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. 1 Like. 5. Agent Controller is not running, no config files can be found in the systemd directory and within xinetd. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. slice (loaded active) and check_mk. service systemctl disable cmk-agent-ctl-daemon. com --site FOO --user BAR --password FOO. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. 7 I have problem since the connection to the cmk server has to be ssl encrypted. 0) master 1. $ sudo cmk-agent-ctl register --hostname localhost --server checkmk. Now you need to register the agnet for TLS handshake. 1 Like. If I try to register (not register-new) a server, which has been in the monitoring since yea…The agent control use the port 8000 for communication. So if you make any changes to the config file then you need to reload configuration or restart the agent. This might be a bug. For example, the registration crashed with "500 Internal Server Error" for users without the permission "Write access to all hosts and folders". secret with the password as String. 1 Like. 1 gave 404 Not Found: Host 127. Hi everyone, below is the output of the “cmk-agent-ctl. This might be a bug. Hi, Some days ago i was testing this software, do a few tests and lately installed on a VM runing linux mint 20. 0. CMK version: 2. The controller is executed under the cmk-agent user, which has limited privileges, e. 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. Open the terminal that you want to monitor on your. 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. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. Checkmk Community Trouble after upgrading to 2. This one is listening at port 8000. Please provide me with the output of:. exe” register. gawainsr2 August 15, 2022, 5:52pm 1. Ultimately, Checkmk was showing the agents were not registered because they were not in fact registered. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. 0 then you will find the systemd unit files inside. g. 0p24 to 2. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. 1. Hello. 0. 45. to checkmk. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. I was using 8101 so after i set this it worked perfectly. cd /etc sudo rm -r check_mk cd /var/lib sudo rm -r check_mk_agent sudo rm -r cmk-agent cd /usr/lib sudo rm -r check_mk_agent sudo systemctl daemon-reload. This can be problematic if you are monitoring the same host from a site running Checkmk version 2. The Agent Receiver tells the Agent Controller. 1 does not exist. , I had to put the public hostname). mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. socket systemctl status cmk-agent-ctl-daemon. 0 adds the Agent Controller and new features to the agent script. But before we start with the actual. My server proxmox follow the guide from checkmk, where create the user, policy, open port 6556, special agent. After the installation everything worked. Now you need to register the agnet for TLS handshake. What I already tried: I tried only listening on ports 80 and 443 for caddy, with {"serverDuration": 24, "requestCorrelationId": "464b55cee9f74460a402ac4a40d2b489"} Checkmk Knowledge Base {"serverDuration": 18, "requestCorrelationId. I accept the certificate. ╰─$ sudo cmk-agent-ctl status Version: 2. 0p11 Agent socket: inoperational (!!) Version: 2. There were some user permission issues with the agent registration (cmk-agent-ctl register. gerhards. check_mk agent runs on top of xinetd service in Linux. I am trying to register an agent installed on a Windows Server 2019. After a reboot the cmk-agent-ctl-daemon and the check-mk-agent. 6 LTS Package: check-mk-raw-2. 04. You have three options here: Make the REST API call work. checkmk-v2-1. If you use the bakery, the agent was baked with enabled cmk-agent-ctl. You can learn how to use the agent here. When you have done all this, install the agent again and it will work properly. 0p6. The controller is executed under the cmk-agent user, which has limited privileges, e. CMK version: 2. Reload check_mk configuration using below command –. 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. Bulk Consent Manager. If the host is monitored by multiple sites, you must register to all of them. CMK version: 2. CMK 2. local:8000 -s checkmk. 234. I am trying to register an agent installed on a Windows Server 2019. Server certificate details: [2022-06-01. cme and I’m no longer able to register new hosts with an automation user “cmkautomation” that I created a while ago (with role “agent_registration”). You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. In your case doing proxy. TLD -i SITE-NAME -U USERNAME. The controller is executed under the cmk-agent user, which has limited privileges, e. Disable TLS registration on the CMK server: Properties of host, menu entry Host > Remove TLS registration; Afterwards, ss should show xinetd claiming the connection test should work. Just like it’s the case for the /etc/cmk-update-agent. 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. sh script. OS version: TrueNAS SCALE 22. Deutsch. 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. service: Start request repeated too quickly. When trying to register the checkmk agent: Access is denied:. Fixed that with create a new User “automation” and created the file automation. Distribute below files from new baked agent to all agents that were baked with expired certificate. 0 ergänzt das Agentenskript mit dem Agent Controller und neuen Funktionen. I created the folder manually and changed ownership, and now the registration is working! Agent Controller is not running, no config files can be found in the systemd directory and within xinetd. serviceThis is a bug of the client cmk-agent-ctl. target. system (system) Closed October 17, 2023, 5:42am. Upon first try, “cmk-agent-ctl register. Ping works, Agent reports Communication Failed: timed out. I am trying to register an agent installed on a Windows Server 2019. The controller is executed under the cmk-agent user, which has limited privileges, e. 0p27 OS version: Ubuntu 20. register ^. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. OS version: Ubuntu Server. 1. Currently, only systemd on the x86_64 platform is. Einen auf den Server auf der Docker Service läuft (OpenSuse Tumbleweed), sowie einen Windows Server 2016. echo y|sudo cmk-agent-ctl register --hostname vmansible01 –server vmcheckmk01. Checkmk Enterprise Edition 2. ). cmk-agent-ctl register --hostname app-a. 1. ago. 02. mit cmk-agent-ctl help register. XXX. 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. I am also running Puppet so automation is a thing. 1. 0. 6. exe register --hostname HOST --server SERVER: 8001 --site SITE --user USER. de --server monitor. domain. This might be a bug. 0p15 OS version: TrueNAS SCALE 22. 1. com. socket systemctl status cmk-agent-ctl-daemon. Attempting to register at checkmk. 10. exe" register --hostname s3mo-tape. no login shell, and is used only for data transfer. g. Caused by: 0: Failed to set group id 998 corresponding to user cmk-agent 1: EPERM: Operation not permitted However, when I run the command using sudo, I end up with the following output. socket Then restart your xinetd (or just reboot). You can analyze this by having a look at the server’s certificate chain. Bei einem Netzwerkdienst liegt es nahe, den Dienst über das Netzwerk abzufragen und über diesen Weg auch zu überwachen. I created the folder manually and changed ownership, and now the registration. 1 Like. 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. Tahnks a lot for your tip. 0 2. Registration indeed is good. I had to add the checkmk user again. 1. The registration works. 0. WalterH (Walter Hofstädtler) May 30, 2022, 5:42pm 31. 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. service - Checkmk agent controller daemonIt seams you use a Debian system. Agent pairing; Read access to all hosts and folders Since Checkmk version 2. 0 Agent socket: inoperational (!!) IP allowlist: anyyour solution does not work it does not allow me to automatically register my agent after its installation Capture d'écran 2023-09-28 120008 1443×60 18 KB aeckstein (Andre Eckstein) September 29, 2023, 2:38pmCMK version: 2. Run communication test. socket (failed failed) so I stopped and disabled them, then did systemctl daemon-reload and systemctl. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. 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. DOMAIN. 0-1_all. You can display. If you want to use the agent in legacy mode, you need to disable cmk-agent-ctl in bakery rules. 0. NOTE: A registered host will refuse all unencrypted connections. exe register --trust-cert --hostname mein. I am trying to register an agent installed on a Windows Server 2019. 0p20 Debian 11 Hi everyone, below is the output of the “cmk-agent-ctl. Die entsprechenden Optionen können Sie sich beim Aufruf von cmk-update-agent register --help anzeigen lassen. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. cmk-agent-ctl register --server cmkserver:443 --trust-cert --site cmksite --user username --password password --hostname monitoringhost On Debian 11 if got the following outputThe Linux agent of Checkmk version 2. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. One of my hosts is producing this error, while most others register fine: root@sshgateway:~# cmk-agent-ctl register --hostname gateway. Redirecting to /bin/systemctl reload xinetd. I get this with no port, or port 800 and 8001. 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. 1. The hostname “localhost” was wrong. 2. On a related note, I’ve been following the beginner’s guide on setting up Checkmk and found that registering the Checkmk Agent for monitoring the monitoring server itself not working. exe . So if you make any changes to the config file then you need to reload configuration or restart the agent. cmk-agent-ctl register --hostname localhost --server server:8000 --site mysite --user cmkadmin -vv. Monthly Promotions Product Specials and Monthly Flyers Emailed Right to You! Online Ordering Check Price and. You might apt-get remove the old Checkmk package when no site is using it any more. To summarize: If you want to customize a Checkmk configuration and activate the changes, in Nagios you will subsequently require: OMD [mysite]:~$ cmk -R. Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. net:8000--site cmk –user automation --password MYTOKEN sudo reboot (To verify it continues to work post-reboot) andreas-doehler (Andreas) August 15, 2022, 7:25pm 6. mit cmk-agent-ctl help register. 0-1_all. On a related note, I’ve been following the beginner’s guide on setting up Checkmk and found that registering the Checkmk Agent for monitoring the monitoring server itself not working. 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. Checkmk Raw Edition 2. jlagendijk (Jesse) June 2, 2022, 10:04am 1. 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. Sie können sich mit cmk-agent-ctl help die Kommandohilfe anzeigen lassen, auch spezifisch für die verfügbaren Subkommandos, z. I am trying to register an agent installed on a Windows Server 2019. 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. gerhards. Thanks for your responses! @cyr0nk0r I rebaked the Agent using HTTP only and got rid of the. : checkmk:~# systemctl status cmk-agent-ctl-daemon. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. 1. g. 0p20 Debian 11. The controller is executed under the cmk-agent user, which has limited privileges, e. Finally, in Bake agent packages, activate. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. 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. 1 Like. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. 6 I have an external cloud host that I would like to monitor with in-house CMK server. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. exe to register the Agent Controller. service I see this error: ERROR [cmk_agent_ctl] Failed to listen on TCP socket for incoming pull connections. CMK version: 2. 1 Like. Host can telnet on port 8000 of the server and a curl request works. , I had to put the public hostname). If you want to use the agent in legacy mode, you need to disable cmk-agent-ctl in bakery rules. Installing an agent and starting monitoring was straightforward - everything happens over SSH. B. 0 adds the Agent Controller and new features to the agent program. Explcit host: xxx. net:8000--site cmk –user automation --password MYTOKEN sudo reboot (To verify it continues to work post-reboot) andreas-doehler August 15, 2022, 7:25pm 6. If you use the bakery, the agent was baked with enabled cmk-agent-ctl. service1. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. cmk-update-agent register -v -H COMPUTERNAME -U register -S xxxxxxxxxxxxxxxxx. it --server 192. py script to the host to be monitored (both can be found at ~/share/check_mk/agents/plugins on the Checkmk server). This was not expected as I created rules in “Agent controller” {'agent_ctl_enabled': True}. 57. OS is Ubuntu 22. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. latest (2. DOH I forgot I had set a custom port for agent receiver as i had a conflict for 8000 on my docker host. 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. 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). 1. Yes I did use the” cmk-agent-ctl register command, after that I got this message. I confused the keyword register on cmk-agent-ctl register with cmk-update-agent register or perhaps on some subconscious level assumed the first would handle both. mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4.