It has to match the actual hostname used by the Checkmk server, found under “Setup” > “Hosts”. It seams you use a Debian system. cre default. com. The new TLS feature is need to register with cmk-agent-ctl register command. I’ve installed the agent and succesfully register on OS windows 7x64 and. On Linux systems, the agent controller will be. com --site FOO --user BAR --password FOO. The Agent Receiver tells the Agent Controller. 1 Like. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. 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. Could you please check who is claiming port 6556? ss -tulpn | grep 6556 This should be cmk-agent-ctl in daemon mode. Password for user ‘cmkadmin’: Successfully registered agent of host “monitor2” for deployment. net -i STAR -P 'XXXXX' -U automation -H sys-vbr02The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. ). If you use the bakery, the agent was baked with enabled cmk-agent-ctl. ╰─$ sudo cmk-agent-ctl status Version: 2. 1. In your case. deb. Diese werden auch als aktive Checks bezeichnet. I am trying to register an agent installed on a Windows Server 2019. You can analyze this by having a look at the server’s certificate chain. 2 Delete all directories/files of the agent controller from the host. Are you trying to register the 2. Hello David, unfortunately --trust-cert changes nothing. 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. 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. exe" register --hostname s3mo-tape. 1. Ultimately, Checkmk was showing the agents were not registered because they were not in fact registered. domain. CMK Version: 2. mydomain. cfg file, the registration information of the agent controller stays behind on uninstallation. This can be problematic if you are monitoring the same host from a site running Checkmk version 2. 1 Like. This might be a bug. Home ; Categories ;Registration indeed is good. latest (2. The hostname “localhost” was wrong. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. 4 --server 1. As suggested in another post i read i checked:-that port 8000 is open-omd config show | grep AGENT_RECEIVER show port 8000Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. You’ll also need to do something like cmk-agent-ctl register. If it is xinetd remove the. service should work as expected. serviceThis is a bug of the client cmk-agent-ctl. exe register --hostname xxx --server checkmk:8000 --site monitoring --user automation --… Hi, in the register-command use --server checkmk without the port, maybe there is a formatting problem with that. 6. Please provide me with the output of: systemctl status check-mk-agent. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. 1. 1. Reload check_mk configuration using below command –. If I try to register it with the command: cmk-agent-ctl register --detect-proxy --hostname FOO --server bla. mictlancihuatll. Der Agent Controller cmk-agent-ctl kümmert sich um den Transport der vom Agentenskript gesammelten Daten. 0 2. NOTE: A registered host will refuse all unencrypted connections. 1. service: Scheduled restart job, restart counter is at 2. 0. ╰─$ sudo cmk-agent-ctl status Version: 2. I’m facing the same issue (and also running checkmk raw in a Docker container) on a X86_64 Debian Bullseye host. 1. socket. rs:14: starting [2023-02-10 12:54:18. Ikkarus13 (Sascha Kunimünch) May 30, 2022, 8:00am 1. But if cmk-agent-ctl cannot be started, access fails. 1 does not exist. py script to the host to be monitored (both can be found at ~/share/check_mk/agents/plugins on the Checkmk server). 6. 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. 0 the new Linux agent with the Agent Controller supports the registered, TLS-encrypted and compressed pull mode. All commands to be executed on the host to be monitored. Rg, ChristianWindows installer ¶. I think the docs aren’t clear on what should be done if ss -tulpn | grep 6556 shows that systemd or xinetd are listening on 6556 instead of cmk-agent-ctl, and what one should do to have cmk-agent-ctl working. wants/check-mk-agent. 0 Zeiten registriert) Registrierung über den Servernamen “checkmk” meines CheckMK Servers und der Instanz “lexx”. 1. g. 1. g. 2 system. 2. Baked and signed the agent. cmk-agent-ctl register --hostname myhost --server checkmk. For example, the registration crashed with "500 Internal Server Error" for users without the permission "Write access to all hosts and folders". service. 0. 1 Like. Hi everyone, below is the output of the “cmk-agent-ctl. 4. 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. If the host is monitored by multiple sites, you must register to all of them. OS version: Rocky Linux release 9. 2 system. mit cmk-agent-ctl help register. 57. 0 onwards), you have to add the following rights (internal name “general. 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. Hi everyone, below is the output of the “cmk-agent-ctl. 0. , I had to put the public hostname). 0 then you will find the systemd unit files inside. Ich registriere den Agent : sudo cmk-agent-ctl register --hostname hlcmk --server 10. {"payload":{"allShortcutsEnabled":false,"fileTree":{"agents":{"items":[{"name":"cfg_examples","path":"agents/cfg_examples","contentType":"directory"},{"name. $ sudo systemctl restart cmk-agent-ctl-daemon. Wie hier beschrieben, sollten alle Bedingungen für eine TLS encryption erfüllt sein. systemctl stop 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. 0. check_für das Abfragen von Webseiten. You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. 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. 0p6. The Windows agent. 1. CMK version: 2. Update: Nervermind. The agent is running and I get all of the. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. andreas-doehler (Andreas) January 8, 2023, 3:48pm 2. The port can either be included in the server name argument ( -s ), or it can be left out. Create MSI file for windows 2019 server. Hello. Specify the correct port when calling the registration command. The challenge is registering an agent, i. Die Registrierung der Agents in der Version 2. deb Now the cmk-agent-ctl-daemon. DOMAIN. 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”). mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. SebLthr June 14, 2022, 8:17am 1. Das funktioniert. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. 02. I installed the CheckMK Agent on a TrueNAS SCALE host. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. As suggested in another post i read i checked:-that port 8000 is open-omd config show | grep AGENT_RECEIVER show port 8000It seams you use a Debian system. I am not able to debug the cmk-agent-ctl since it is in. d/ there might be a residual configuration file called checkmk or similar. The cmk-agent user was sucessfully created. Could you please check who is claiming port 6556?. After the installation everything worked. 2 system. 10. 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. 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. CMK version: 2. Redirecting to /bin/systemctl reload xinetd. Yes I did use the” cmk-agent-ctl register command, after that I got this message. 0 OS Version: Appliance 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”). XXX. But if cmk-agent-ctl cannot be started, access fails. Ok, so the user I’m using to do the agent registration is part of the Administrator group, which is a default group that has all the permissions regarding agents. Added new host in CMK. This can be problematic if you are monitoring the same host from a site running Checkmk version 2. 1 does not exist. After the installation everything worked. 5. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. , I had to put the public hostname). Open the terminal that you want to monitor on your Linux server. CMK 2. 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 am trying to add new servers with: amnesiac ≫ [ 10:47:25 ] ≫ ~ $ cmk-agent-ctl register-new --server. If it is not that, double-check your TLS registration process per our official guide: Monitoring Linux - The new agent for Linux in detail. You can learn how to use the agent here. Now the service is active and listening. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. The Windows agent. g. As suggested in another post i read i checked:-that port 8000 is open-omd config show | grep AGENT_RECEIVER show port 8000Latest version of CheckMK. XXX. 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. This port can be found out via omd config > Basics > AGENT_RECEIVER_PORT Of course, this port has to be exposed for the registration to. 0, that will not be possible. CMK 2. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. 02. socket failed. 5. service should work as expected. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. 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. I tried the following: apt purge check-mk-agent; manually removed some leftovers rm -r /var/lib/cmk-agent rm -r /var/lib/check_mk_agent; systemctl | grep check still showed two services, system-check_mk. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. Thank you again Anders! My humility and I will go back into the. socket failed. evilguy January 8, 2023, 7:53pm 3. Checkmk. 4. 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. It has to match the actual hostname used by the Checkmk server, found under “Setup” > “Hosts”. NOTE: A registered host will refuse all unencrypted connections. And now. mydomain. This might be a bug. sh script. 5 LTS monitored system (Host) Package: check-mk-agent_2. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. 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). mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. g. $ sudo cmk-agent-ctl register --hostname localhost --server checkmk. 0. exe' register -s checkmk. You can confirm this by telnetting from your OMD site to the monitored server on tcp port 6556:Checkmk Enterprise Edition 2. B. 0 or earlier. 1. Troubleshooting. Sie können sich mit cmk-agent-ctl help die Kommandohilfe anzeigen lassen, auch spezifisch für die verfügbaren Subkommandos, z. TLD -i SITE-NAME -U USERNAME This worked perfectly fine in CMK 2. exe" status It also seems that you have multiple sites on your Checkmk server based on port 8001 in the response. Die entsprechenden Optionen können Sie sich beim Aufruf von cmk-update-agent register --help anzeigen lassen. 1. 1 i’m trying to automate the process of registering our updated windows hosts to thee monitoring for tls encryption. Unfortunately, the problem remains: C:\WINDOWS\system32>"C:\Program Files (x86)\checkmk\service\cmk-agent-ctl. 0p10 OS: linux The hosts agent supports TLS, but it is not being used. The server and the host are on the same network, the same virtualization cluster. no login shell, and is used only for data transfer. 1. local:8000 -s checkmk. 6 LTS Package: check-mk-raw-2. If the host is monitored by multiple sites, you must register to. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. jlagendijk (Jesse) June 2, 2022, 10:04am 1. It would be good if after you run the cmk-agent-ctl register you get a positive validation in the command output like OK or Registered! thanks for your support. 0p20 Debian 11. 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. ERROR [cmk_agent_ctl] Failed to run as user 'cmk-agent'. I had to add the checkmk user again. Using previous settings from /etc/cmk-update-agent. 0. XXX. 0. Only after I manually ran “cmk-agent-ctl register” it listened again. The agents' Agent Controller makes a request for registration to the server’s Agent Receiver, transmitting the data required to create the host. deb Now the cmk-agent-ctl-daemon. domain. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. 1. 1 the monitoring data sent from the monitored host to the monitoring server is TLS encrypted and compressed by default. 0 then you will find the systemd unit files. 5. OS version: TrueNAS SCALE 22. ourcompany. Welcome to the Checkmk User Guide. 5. 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. 2. I feel like I’m missing something real obvious. 0. c:2633). 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. CMK version: 2. 0p12. serviceSo 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. cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. Hello. This might be a bug. cmk-agent-ctl. The exact command line is this: cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. 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. 0p20 Debian 11 Hi everyone, below is the output of the “cmk-agent-ctl. Ping works, Agent reports Communication Failed: timed out. 0b4-1_all. I created the folder manually and changed ownership, and now the registration. 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. 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. 0-1_all. After a reboot the cmk-agent-ctl-daemon and the check-mk-agent. 1:8655 --site cmk --user cmk_admin. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. Upon first try, “cmk-agent-ctl register. If you haven’t done yet please register the agent controller as well. exe" ^ register ^ --hostname mynewhost ^ -. com. no login shell, and is used only for data transfer. sh script. The cmk-agent user is created during the installation of the agent. 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. 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. raptorswithhats. 4. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. 4. Danach erfolgte die Registrierung und der Update Befehl. cmk-update-agent register -v -H COMPUTERNAME -U register -S xxxxxxxxxxxxxxxxx. The registration is done using the Agent Controller cmk-agent-ctl, which provides a command interface for configuring the connections. When trying to register the checkmk agent: Access is denied:. Copy the cmk-update-agent binary or the cmk_update_agent. cmk-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. This component is separate from the Agent Updater. The cmk-agent user was sucessfully created. rs:41: Loaded config from. I had to add the checkmk user again. sh script. The cmk-agent user is created during the installation of the agent package. g. Hello, I have a problem with enabling TLS in CheckMk 2. 1 gave 404 Not Found: Host 127. 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. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. Segmentation fault (core dumped) The same result also with the all needed parameters for the registration. We tried setting a firewall rule to the port 8000, we tried using the automation user, the checkmk_admin user, and a random admin user. Use the cmk-agent-ctl register command to register. Unfortunately, the problem remains: C:WINDOWSsystem32>"C:Program Files (x86)checkmkservicecmk-agent-ctl. CMK 2. Hello, I updated my CheckMK installation to firmware 1. Explcit host: xxx. Der Benutzer cmk-agent wird während der Installation des Agentenpakets. 1 does not exist. Back on server, Add server under hosts. DOMAIN. en. 1. 0/26. The cmk-agent user is created during the installation of the agent. 0-1_all. But if cmk-agent-ctl cannot be started, access fails. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. 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)\checkmk\service\cmk-agent-ctl. The docker run command from the documentation is using -p 8000:8000 to bind that port externally. exe” ^. In checkmk for the host service got below warning. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. service You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. Bulk Consent Manager. 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. Reloading xinetd Activating systemd unit 'check-mk-agent. B. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. 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. To register a host, users need the following permissions: Agent pairing. 0 or earlier. Something like this. . Reload check_mk configuration using below command –. I try with: cmk-agent-ctl register --hostname MYHOST --server CMKHOST --site MYSITE --user cmkadmin --password ‘MYPASSWORD’ Then I get the. The Windows agent. Director of Registration and Certification at the address noted below. For more information try --help Command for registration. This worked perfectly fine in CMK 2. I am trying to register an agent installed on a Windows Server 2019. Welcome to the Checkmk User Guide. 2 system. I had to add the checkmk user. 1. When I try to register the client to the server (which is inside of docker) I try the following line: (I only have IP addresses and firewall is open) cmk-agent-ctl register --hostname ip_of_client --server 1. Registration indeed is good. 1. Going from one patch level to another one (like from p16 to p20) basically is: dpkg -i checkmk…new. 2. 4. TLD -i SITE-NAME -U USERNAME This worked perfectly fine in CMK 2. If you use the bakery, the agent was baked with enabled cmk-agent-ctl. The cmk-agent user was sucessfully created. 1 Like. exe register --trust-cert --hostname mein. com--site FOO --user BAR -. I created the folder manually and changed ownership, and now the registration. When you have done all this, install the agent again and it will work properly. 0. So if you make any changes to the config file then you need to reload configuration or restart the agent. 1. 3. service cmk-agent-ctl-daemon.