service: Scheduled restart job, restart counter is at 2. gerhards. In your case doing proxy. After a reboot the cmk-agent-ctl-daemon and the check-mk-agent. a re-register has the same effect, even with a cmk-agent-ctl delete and a “remove TLS registration”. One of my hosts is producing this error, while most others register fine: root@sshgateway:~# cmk-agent-ctl register --hostname gateway. 2. gerhards. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. Ausgabe ist: Local: Hier scheint alles ok zu seine, nur taucht der Host im. XXX. In case it is left out, the agent controller tries to query the port from the REST API. You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. 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. 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. deb Now the cmk-agent-ctl-daemon. 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. If you haven’t done yet please register the agent controller as well. 1. 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. Reloading xinetd Activating systemd unit. 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. If it is xinetd remove the. Im justed deleted the automation User. 1:8655 --site cmk --user cmk_admin. The Agent Receiver tells the Agent Controller. 0p20 Debian 11. 1 does not exist. exe register --hostname HOST --server SERVER: 8001 --site SITE --user USER. On Linux systems, the agent controller will be. no login shell, and is used only for data transfer. windows. The hostname “localhost” was wrong. I am trying to register an agent installed on a Windows Server 2019. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. Hi, Some days ago i was testing this software, do a few tests and lately installed on a VM runing linux mint 20. And now. This might be a bug. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. You also need a --hostname flag, like --hostname test. Address: 401 Hartwig Court, 1208 Wharf Street, Victoria, BC, V8W 2P5, CanadaCTP Distributors. latest (2. If it is xinetd remove the Xinetd config file for the Checkmk agent and just reinstall the agent package. Bei einem Netzwerkdienst liegt es nahe, den Dienst über das Netzwerk abzufragen und über diesen Weg auch zu überwachen. socket systemctl status cmk-agent-ctl-daemon. If I try to register it with the command: cmk-agent-ctl register --detect-proxy --hostname FOO --server bla. The controller is executed under the cmk-agent user, which has limited privileges, e. 0 or earlier. The Agent Receiver tells the Agent Controller. The agents' Agent Controller makes a request for registration to the server’s Agent Receiver, transmitting the data required to create the host. 1. mictlancihuatll. 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 Version: 2. cmk-agent-ctl delete-all --enable-insecure-connections; cmk-agent-ctl status; cmk-agent-ctl register --hostname $(hostname -f) --server checkmk21-prod. Become a Dealer. Thank you very much to assist me on this way! system (system) Closed September 26, 2023, 4:01pm 9. This is in preparation for the 2. service should work as expected. net -i STAR -P 'XXXXX' -U automation -H sys-vbr02Registration indeed is good. Using previous settings from /etc/cmk-update-agent. How to Contact. exe" register --hostname s3mo-tape. 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”). 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. XXX. example. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. For this, I’m running following command on client # cmk-agent-ctl register --hostname `hostname -f` --server mon. You can learn how to use the agent here. 1. It seams you use a Debian system. You can either delete that file or remove xinetd altogether. systemctl stop cmk-agent-ctl-daemon. ss -tulpn | grep 6556 tcp LISTEN 0 4096 *:6556 : users:((“cmk-agent-ctl”,pid=425,fd=9)) On the. In case it is left out, the agent controller tries to query the port from the REST API. domain. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. 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. 0. „TLS is not activated on monitored host (see details)“. Agent pairing; Read access to all hosts and folders Since Checkmk version 2. service systemctl disable cmk-agent-ctl-daemon. This port can be found out via omd config > Basics > AGENT_RECEIVER_PORT Of course, this port has to be exposed for the. The cmk-agent user was sucessfully created. socket systemctl status cmk-agent-ctl-daemon. 168. 2. exe” register --site yousitename --server yourcmkserver --user automation --hostname windows_box_hostname --password1. 0p22 agent by running cmk-agent-ctl on the 2. If the host is monitored by multiple sites, you must. 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. 1. 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. If I try to register it with the command: cmk-agent-ctl register --detect-proxy --hostname FOO --server bla. d, only the check-mk-agent can be found: [root@jumphost]# cmk-agent-ctl register --hostname myclient \. 1. Open the terminal that you want to monitor on your. Hello. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. Welcome to the Checkmk User Guide. It has to match the actual hostname used by the Checkmk server, found under “Setup” > “Hosts”. This component is separate from the Agent Updater. CMK Checkmk Enterprise Edition 2. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. 4 --server 1. The cmk-agent user is created during the installation of the agent package. Yes I did use the” cmk-agent-ctl register command,. CMK version: 2. exe" ^ register ^ --hostname mynewhost ^ -. 0-1_all. 4. , I had to put the public hostname). There were some user permission issues with the agent registration (cmk-agent-ctl register. Or if you have a specific role for a admin user, go to: Roles & permissions and see this permissions. 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. 04. exe greift auf ihn zu. The agent control use the port 8000 for communication. Now you need to register the agnet for TLS handshake. 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. 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”). When you have done all this, install the agent again and it will work properly. deb Now the cmk-agent-ctl-daemon. 1. 1. Registration indeed is good. but here is everything ok. CMK version: 2. pem. 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. As suggested in another post i read i checked:-that port 8000 is open-omd config show | grep AGENT_RECEIVER show port 8000Description: Proxmox VE. cmk-agent-ctl register -H ovhxxx -s publicIP:8194 -i cmk -U automation. 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). 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. Hi everyone, below is the output of the “cmk-agent-ctl. 1. 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. mit cmk-agent-ctl help. Hi @robin. 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. 1 does not exist. 0p27 OS version: Ubuntu 20. 1. 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. We’ll come back to you to ask for. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. The windows installer supports the following command line arguments: /S - runs the installer silently /D= - sets the default installation directory. no login shell, and is used only for data transfer. 0. The cmk-agent user was sucessfully created. Could you please check who is claiming port 6556?. Upon first try, “cmk-agent-ctl register. Das funktioniert und auch eventuelle Fehler: TLS is not activated on monitored host verschwinden. com --site FOO --user BAR --password FOO. 0p24 to 2. [[email protected] It seems that the host you are trying to register is already registered at the Checkmk site. 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. After the installation everything worked. service. Upon first try, “cmk-agent-ctl register. When I try to register the agent on the host system with: cmk-agent-ctl register --hostname some_hostname --server 127. Become root. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. OS is Ubuntu 22. net -i STAR -P 'XXXXX' -U automation -H sys-vbr02The hosts agent supports TLS, but it is not being used. 1. This morning all Windows Agents were suddenly no longer registered. Dazu verwendet Checkmk teils eigene, teils bereits existierende Plugins. If there are leftovers from 2. 1. In checkmk for the host service got below warning. For a user to be able to do the cmk-agent-ctl register, which is needed to enable the TLS encryption (available from 2. CMK 2. The additional port 8000 seems necessary for creating TLS connection. 0 or earlier. 0 adds the Agent Controller and new features to the agent script. 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. However, there is a difference between console output of “cmk-agent-ctl status” and “cmk_agent_ctl_status” from agent output (downloaded via “Download. Welcome to the Checkmk User Guide. mit cmk-agent-ctl help register. When I try to register the agent on the host system with: cmk-agent-ctl register --hostname some_hostname --server 127. CMK version: 2. After a reboot the cmk-agent-ctl-daemon and the check-mk-agent. Deutsch. 0. 1 the monitoring data sent from the monitored host to the monitoring server is TLS encrypted and compressed by default. service: Scheduled restart job, restart counter is at 2. Nun wird der Service „CheckMK Agent“ – Service mit Warning angezeigt und es liegt wohl daran. The agent controller is well deployed and configured : “C:Program Files (x86)checkmkservicecmk-agent-ctl. cmk-update-agent register -v -H COMPUTERNAME -U register -S xxxxxxxxxxxxxxxxx. 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. exe . 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. omd su mysite. 0) master 1. Home ; Categories ;Registration indeed is good. I am experiencing a problem with registering the agent: CMK version: 2. The agent control use the port 8000 for communication. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. Just to. TLD -i SITE-NAME -U USERNAME. 2. The cmk-agent user was sucessfully created. If you use the bakery, the agent was baked with enabled cmk-agent-ctl. Hello. 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. check_für das Abfragen von Webseiten. 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. 0. 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. 02. local -i home -U cmkadmin ERROR [cmk_agent_ctl] Failed to discover agent receiver port from Checkmk REST API, both with and Registration indeed is good. sh script. g. g. The docker run command from the documentation is using -p 8000:8000 to bind that port externally. I’m running 2. 4. The cmk-agent user is created during the installation of the agent. 1. rs:41: Loaded config from. domain. omd update. XXX. 1 server? You have to run the cmk-agent-ctl on the machine running the agent, not from the server. CMK version:2. When you have done all this, install the agent again and it will work properly. 2 release. 1 Like. 2 system. Anschließend installieren Sie den Agenten mit allen Konfigurationsdetails für den zu überwachenden Host durch einen abschließenden Aufruf des Agent-Updater-Plugins. The controller is executed under the cmk-agent user, which has limited privileges, e. cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. DOH I forgot I had set a custom port for agent receiver as i had a conflict for 8000 on my docker host. 4:8000 --site cmk --user cmkadmin --password password. Going from one patch level to another one (like from p16 to p20) basically is: dpkg -i checkmk…new. 0-1_all. 489987 +01:00] INFO [cmk_agent_ctl] srclib. This can be problematic if you are monitoring the same host from a site running Checkmk 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. Basically i installed checkmk site into Docker then i installed the agent into the desired server, but when i run the command: sudo cmk-agent-ctl register -vv --hostname name --server ip:8000 --site cmk --user user. DOMAIN. This might be a bug. serviceThe Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. Distribute below files from new baked agent to all agents that were baked with expired certificate. service should work as expected. 2. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. 1 agent. If you use the bakery, the agent was baked with enabled cmk-agent-ctl. 4. Wie hier beschrieben, sollten alle Bedingungen für eine TLS encryption erfüllt sein. 0p17. 0p9. Welcome to Checkmk. g. 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. copy the cmk-agent-ctl for the architecture you are using to e. After the installation everything worked. 1. Hosts, services and agents. g. You have three options here: Make the REST API call work. We strongly recommend to enable TLS by registering the host to the site (using the cmk-agent-ctl register command on the monitored host). exe' register -s checkmk. 40. 0. gierse,. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. 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. 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. exit # leave the site user shell. 1 Like. socket systemctl status cmk-agent-ctl-daemon. Is there a switch to automatically confirm the registration prompt during the agent registration prompt for scripted (Ansible) provisioning? I’m currently doing this via a clunky method of echo y| (agentctl command)echo y|sudo cmk-agent-ctl register --hostname vmansible01 –server vmcheckmk01. 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. Hello. 02. 0p14 Agent socket: operational IP allowlist: 10. Checkmk. wants/check-mk-agent. 14 --site burana_modena --user automation -. Warning: This version breaks the agent receiver on IPv4-only Checkmk servers which have completely disabled IPv6 support on kernel level. Could you please check who is claiming port 6556? ss -tulpn | grep 6556 This should be cmk-agent-ctl in daemon mode. cee Ubuntu 16. The controller is executed under the cmk-agent user, which has limited privileges, e. 0p12. deb Monitored System (Host): Checkmk Agent version: 2. Redirecting to /bin/systemctl reload xinetd. check_für das Abfragen von Webseiten. But if cmk-agent-ctl cannot be started, access fails. 5. 2. cmk-agent-ctl. sh script. 1 Like. 1. 0 2. This worked perfectly fine in CMK 2. Upon first try, “cmk-agent-ctl register. So, get this from “omd config show” on your CMK. service: Start request repeated too quickly. 0p10 OS: linux The hosts agent supports TLS, but it is not being used. 2. cmk-agent-ctl register --hostname 1. 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. –server checkmk. no login shell, and is used only for data transfer. Register. , I had to put the public hostname). no login shell, and is used only for data transfer. OS version: Rocky Linux release 9. CMK 2. 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. The user used for registering has admin privileges at checkmk and is able to see the global setting at the webui. Hello. 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. In your case doing proxy. user -vv INFO [cmk_agent_ctl] starting. Hello, I have an issue with the registration of the host on a server : the agent-receiver on server-side is always crashing around 15/20 seconds and restarts. I created the folder manually and changed ownership, and now the registration. 1. 1. mschlenker (Mattias. domain. Segmentation fault (core dumped) The same result also with the all needed parameters for the registration. C:\ProgramData\checkmk\agent\config\cmk-update-agent. Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. To register a host, users need the following permissions: Agent pairing. 6 Likes. 0 adds the Agent Controller and new features to the agent script. C:\Program Files (x86)\checkmk\service>cmk-agent-ctl. Er wird unter dem Benutzer cmk-agent ausgeführt, der nur beschränkte Rechte besitzt, z. 2. I had to add the checkmk user again. com:8000 --site itbetrieb --user automation --password xxxxxxxx --trust-cert -vv Version: 2. service: Scheduled restart job, restart counter is at 2. Ultimately, Checkmk was showing the agents were not registered because they were not in fact registered. Just in case: We are prepared for cases where the agent controller cannot be started or. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. MichaelI’m running 2. This can be problematic if you are monitoring the same host from a site running Checkmk version 2. When trying to register the checkmk agent: Access is denied:. 0 or earlier. 0. 6. deb Now the cmk-agent-ctl-daemon. I installed the CheckMK Agent on a TrueNAS SCALE host. domain. Inside the container: root@9529f647cd27:/# omd version OMD - Open Monitoring Distribution Version 2. 0. Wie soll ich nun aber auf Hunderten von Host TLS aktivieren?Hi, I have an issue with the registration of some agents on a site : when I run the cmk-agent-ctl register the process crashed on server-side after 10/15 seconds. Bulk Consent Manager. Nun wird der Service „CheckMK Agent“ – Service mit Warning angezeigt und es liegt wohl daran. service then restart xinitd and tell me about the output of ss -tulpn | grep 6556. 0. 0p23 of Checkmk is ready for download. 1. 1 Like. The controller is executed under the cmk-agent user, which has limited privileges, e. OS version: Ubuntu Server. 1 Like. 0p2 RAW Edition. But if cmk-agent-ctl cannot be started, access fails. 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. 0p9. 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. 1. To register a host, users need the following permissions: Agent pairing. 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. Das zu bestätigende Server-Zertifikat haben wir aus Gründen der. 1. B. 0 Agent socket: inoperational (!!)The agent control use the port 8000 for communication. target. Wie Sie den Agenten nutzen, erfahren Sie hier. 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. cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. CMK version: 2.