But if cmk-agent-ctl cannot be started, access fails. Sie können sich mit cmk-agent-ctl help die Kommandohilfe anzeigen lassen, auch spezifisch für die verfügbaren Subkommandos, z. 1 using the Agent Controller. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. 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. 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. This might be a bug. . d/ there might be a residual configuration file called checkmk or similar. The controller is executed under the cmk-agent user, which has limited privileges, e. local:8000 -s checkmk. Install the suitable Checkmk agent on the server you want to monitor and add the server as a host in Checkmk. Upon first try, “cmk-agent-ctl register. We’ll come back to you to ask for. OK, let’s figure out who is doing what. 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). 0p10 OS: linux The hosts agent supports TLS, but it is not being used. Registration indeed is good. But before we start with the actual. 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. to checkmk. pem. Copy the cmk-update-agent binary or the cmk_update_agent. OS version: Rocky Linux release 9. Checkmk. serviceThe Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. 1 Like. 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. Could you please check who is claiming port 6556? ss -tulpn | grep 6556 This should be cmk-agent-ctl in daemon mode. „TLS is not activated on monitored host (see details)“. checkmk-v2-1. 4. If the host is monitored by multiple sites, you must register to all of them. exe” register. 5. mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. domain. Agent Victoria, British Columbia 1970's Members Murray Acton ~ Guitar, Vocals Steve Andreas ~ Bass, Vocals Peter Bryant ~ Drums, Vocals Wayne Darling ~. After the installation everything worked. deb. Version: 2. com:8000 --site itbetrieb --user automation --password xxxxxxxx --trust-cert -vv Version: 2. I was using 8101 so after i set this it worked perfectly. 0. The agents' Agent Controller makes a request for registration to the server’s Agent Receiver, transmitting the data required to create the host. But if cmk-agent-ctl cannot be started, access fails. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. 4. cmk-update-agent register -v -H COMPUTERNAME -U register -S xxxxxxxxxxxxxxxxx. The cmk-agent user is created during the installation of the agent package. Nun wird der Service „CheckMK Agent“ – Service mit Warning angezeigt und es liegt wohl daran. I installed the CheckMK Agent on a TrueNAS SCALE host. rs:14: st… As mentioned in another thread, you actually ran into a newly implemented CSR version check that’s. Im justed deleted the automation User. check_für das Abfragen von Webseiten. It seams you use a Debian system. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. 45. target. 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. This might be a bug. 1. 1. Diese werden auch als aktive Checks bezeichnet. If you want to use the agent in legacy mode, you need to disable cmk-agent-ctl in bakery rules. Rg, ChristianWindows installer ¶. In your case doing proxy. 2. If I try to register it with the command: cmk-agent-ctl register --detect-proxy --hostname FOO --server bla. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. when i executing the command remotely via powershell i’m. domain. Diese werden auch als aktive Checks bezeichnet. net -i STAR -P 'XXXXX' -U automation -H sys-vbr02Yes I did use the” cmk-agent-ctl register command, after that I got this message. xyz:9800 --site cmk --user BAR --password FOO. 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. $ cmk-update-agent register $ cmk-agent-ctl register. i’am new to checkmk and trying to configure the agent but getting the same message, i couldn’t understand why. And with the CMC: OMD [mysite]:~$ cmk -O. Checkmk. 0. g. 0-1_all. This can be problematic if you are monitoring the same host from a site running Checkmk version 2. DOMAIN. CMK 2. The agents' Agent Controller makes a request for registration to the server’s Agent Receiver, transmitting the data required to create the host. 0 2. For a user to be able to do the cmk-agent-ctl register, which is needed to enable the TLS encryption (available from 2. service Ikkarus13 (Sascha Kunimünch) May 25, 2022, 1:18pm. One of my hosts is producing this error, while most others register fine: root@sshgateway:~# cmk-agent-ctl register --hostname gateway. local -i home -U cmkadmin ERROR [cmk_agent_ctl] Failed to discover agent receiver port from Checkmk REST API, both. 2. 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. deb Now the cmk-agent-ctl-daemon. The new TLS feature is need to register with cmk-agent-ctl register command. 6 I have an external cloud host that I would like to monitor with in-house CMK server. 1 gave 404 Not Found: Host 127. 75:8000 --site robot --user cmkadmin --password password -vv. I created the folder manually and changed ownership, and now the registration. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. 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. socket systemctl disable cmk-agent-ctl-daemon. 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. Register. 1. 5 LTS I have had no issues registering the agent on internal servers, but I have two servers hosted in the cloud which are fully connected and have appropriate NAT rules and local firewall rules to allow the communication, but registering results in the error: ERROR [cmk_agent_ctl] Operation. c:2633). ERROR [cmk_agent_ctl] Failed to run as user 'cmk-agent'. windows. Record Keeping Keep a copy of your application and all submitted documents for your records. 0-1_all. mschlenker (Mattias. service You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. 489987 +01:00] INFO [cmk_agent_ctl] srclib. Here is the deep link to the section in the manual:. 0. The cmk-agent user was sucessfully created. The cmk-agent user is created during the installation of the agent. 1. With that flag added the machine registers just fine. We strongly recommend to enable TLS by registering the host to the site (using the cmk-agent-ctl register command on the monitored host). 1. 1 Like. TLD -i SITE-NAME -U USERNAME This worked perfectly fine in CMK 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. root@kerneltalks # service xinetd reload. Hello David, unfortunately --trust-cert changes nothing. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. The Windows agent of Checkmk version 2. Agent auf allen Monitored Hosts installiert. 0p11 on Debian 11. 1 gave 404 Not Found: Host 127. service should work as expected. 04 Command used for registration: cmk-agent-ctl. 0 2. Ping works, Agent reports Communication Failed: timed out. Added new host in CMK. But nothing worked. agent_pairing") to their role. For more information try --help Command for registration. 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). Tahnks a lot for your tip. Redirecting to /bin/systemctl reload xinetd. Sehr beliebt ist z. CMK version: 2. user -vv INFO [cmk_agent_ctl] starting. socket systemctl status cmk-agent-ctl-daemon. This worked perfectly fine in CMK 2. Alle Hosts angelegt mit Hostname und IP Adresse. 1. example. exe greift auf ihn zu. To register a host, users need the following permissions: Agent pairing. 1. Back on server, Add server under hosts. focal_amd64. 02. 2 system. exe – register --trust-cert’ USAGE: cmk-agent-ctl. If there are leftovers from 2. The client must set the version 0 for the CSRSo 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. The cmk-agent user is created during the installation of the agent. If there are leftovers from 2. no login shell, and is used only for data transfer. Reloading xinetd Activating systemd unit. 1. CMK version: 2. 2. 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. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. ourcompany. 1. service I see this error: ERROR [cmk_agent_ctl] Failed to listen on TCP socket for incoming pull connections. This might be a bug. socket (failed failed) so I stopped and disabled them, then did systemctl daemon-reload and systemctl. OS version: Rocky Linux release 9. omd start. 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). Bei einem Netzwerkdienst liegt es nahe, den Dienst über das Netzwerk abzufragen und über diesen Weg auch zu überwachen. The cmk-agent user was sucessfully created. Das funktioniert und auch eventuelle Fehler: TLS is not activated on monitored host verschwinden. B. 1 does not exist. mydomain. 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. g. 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. 4. 6 Likes. 2. After a reboot the cmk-agent-ctl-daemon and the check-mk-agent. If the host is monitored by multiple sites, you must register to all of them. This one is listening at port 8000. Hosts, services and agents. 1. The cmk-agent user is created during the installation of the agent. rs:41: Loaded config from. 1. 0 or earlier. ” failed with this error: "Request failed with code 500 Internal Server Error: Internal Server Error"The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. g. cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. slice (loaded active) and check_mk. CMK 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. Hello. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. Wie hier beschrieben, sollten alle Bedingungen für eine TLS encryption erfüllt sein. , I had to put the public hostname). I’m running 2. 7 I have problem since the connection to the cmk server has to be ssl encrypted. 1 agent. 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. This worked perfectly fine in CMK 2. 168. If you use the bakery, the agent was baked with enabled cmk-agent-ctl. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. We strongly recommend to enable TLS by registering the host to the site (using the cmk-agent-ctl register command on the monitored host). The exact command line is this: cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. sh script. For example, the registration crashed with "500 Internal Server Error" for users without the permission "Write access to all hosts and folders". So if you make any changes to the config file then you need to reload configuration or restart the agent. You can learn how to use the agent here. Thanks for your responses! @cyr0nk0r I rebaked the Agent using HTTP only and got rid of the. In the following Monitoring agents box, you specify two important options for the auto-registration. 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. OS version: TrueNAS SCALE 22. Checkmk. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. However, there is a difference between console output of “cmk-agent-ctl status” and “cmk_agent_ctl_status” from agent output (downloaded via “Download. 2. Only after I manually ran “cmk-agent-ctl register” it listened again. 1. Version: 2. In your case. 0. Wie Sie den Agenten nutzen, erfahren Sie hier. service: Scheduled restart job, restart counter is at 2. Das funktioniert. I installed the CheckMK Agent on a TrueNAS SCALE host. Agent Updater (Agentenbäckerei), Discovery des Agent Controller Ports, mit Transportverschlüsselung. 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). no login shell, and is used only for data transfer. 40. The cmk-agent user is created during the installation of the agent. exe – register --trust-cert’ USAGE: cmk-agent-ctl. 0 (Blue Onyx) [root@CHECKMK services]# cmk-agent-ctl. If the Agent Receiver accepts the request, registration is performed and a TLS-encrypted connection is established. 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. Something like this. 1:8655 --site cmk --user cmk_admin. Reloading xinetd Activating systemd unit 'check-mk-agent. 1 the monitoring data sent from the monitored host to the monitoring server is TLS encrypted and compressed by default. check_mk agent runs on top of xinetd service in Linux. Nun wird der Service „CheckMK Agent“ – Service mit Warning angezeigt und es liegt wohl daran. Wenn ich aber beim Registrieren den richtigen Port mitgebe, dann gehts…. Upon first try, “cmk-agent-ctl register. Release notes. 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. no login shell, and is used only for data transfer. NOTE: A registered host will refuse all unencrypted connections. socket --now Issue the following command to register the host with your Checkmk server. 1. 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. Please provide me with the output of: systemctl status check-mk-agent. Monthly Promotions Product Specials and Monthly Flyers Emailed Right to You! Online Ordering Check Price and. 0. Der für die verschlüsselte Kommunikation mit dem Checkmk-Server zuständige Agent Controller cmk-agent-ctl. mictlancihuatll. com--site FOO --user BAR -. The controller is executed under the cmk-agent user, which has limited privileges, e. The controller is executed under the cmk-agent user, which has limited privileges, e. This can be problematic if you are monitoring the same host from a site running Checkmk version 2. 0 then you will find the systemd unit files. 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. In your case doing proxy. 2 system. If you want to use the agent in legacy mode, you need to disable cmk-agent-ctl in bakery rules. If I try to register it with the command: cmk-agent-ctl register --detect-proxy --hostname FOO --server bla. 0. domain. Are the Linux systems affected by cmk-agent-ctl not starting using a IPv4 only setup?. 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. 0 onwards), you have to add the following rights (internal name "general. Hi @P. omd update. evilguy January 8, 2023, 7:53pm 3. state. The Linux agent of Checkmk version 2. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. domain. rs:14: starting [2023-02-10 12:54:18. Thx karnicmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. 2 system. So, get this from “omd config show” on your CMK. Here it makes sense to pass the required registration information directly via the command. ). socket failed. 3. 6 LTS Package: check-mk-raw-2. The registration is done using the Agent Controller cmk-agent-ctl, which provides a command interface for configuring the connections. 1. Director of Registration and Certification at the address noted below. I created the folder manually and changed ownership, and now the registration is working! ERROR [cmk_agent_ctl] Something seems wrong with the agent socket (/run/check-mk-agent. 1 Like. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. 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. 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. 234. [[email protected] It seems that the host you are trying to register is already registered at the Checkmk site. 0. 2. 0p22 agent by running cmk-agent-ctl on the 2. server --server mein. 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. Bulk Consent Manager. 1. However, the certificate rolled out by the agent updater ruleset seems to be insufficient. I’m running 2. exe register --hostname SRV001 --server <CHECK_MK_IP> --site mysite --user automation --password <PASSWORD>check_mk agent runs on top of xinetd service in Linux. 0. For a user to be able to do the cmk-agent-ctl register, which is needed to enable the TLS encryption (available from 2. Upon first try, “cmk-agent-ctl register. 0. 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. The agent is running and I get all of the. socket systemctl status cmk-agent-ctl-daemon. In your case doing proxy. 1. net -i STAR -P 'XXXXX' -U automation -H sys-vbr02The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. 0) master 1. 0p23 of Checkmk is ready for download. This worked perfectly fine in CMK 2. $ sudo cmk-agent-ctl register --hostname localhost --server checkmk. Checkmk Enterprise Edition 2. WalterH (Walter Hofstädtler) May 30, 2022, 5:42pm 31. I am also running Puppet so automation is a thing. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. The challenge is registering an agent, i. 1. slice (loaded active) and check_mk. com. 0. I get a return with value: 16 The web test connection has a successfull ping but the agent. 0. On Linux systems, the agent controller will be. 5. 0-1_all. DOMAIN. sh script. 1. Contact an admin if you think this should be re-opened. With Checkmk agent connection mode you decide whether the Checkmk agent should work in pull mode or (as in the following image) in push mode. I’m running 2. 0 RAW OS: Windows Server 2019 Agent controller not registered After multiple clean installations specifically on this server I can’t get CheckMK to work. 1. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. 1. 2. 0p20 Debian 11 Hi everyone, below is the output of the “cmk-agent-ctl. 0p12. 0p12 Agent socket: operational IP allowlist: any Connection: xxxxx UUID: xxxxxx Local: Connection type: pull-agent Certificate issuer: Site 'xxx' local CA Certificate validity: Wed, 05 Oct 2022 12:04:40 +0000 - Mon, 05 Feb 3021 12:04:40 +0000 Remote: Connection type: pull-agent.