In your case doing proxy. Wie Sie den Agenten nutzen, erfahren Sie hier. 1 gave 404 Not Found: Host 127. And with the CMC: OMD [mysite]:~$ cmk -O. 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. 514. 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. 0. Upon first try, “cmk-agent-ctl register. com--site FOO --user BAR --password FOO The new agents at 2. Diese werden auch als aktive Checks bezeichnet. 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. Please provide me with the output of: systemctl status check-mk-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 outputYes I did use the” cmk-agent-ctl register command, after that I got this message. 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. This might be a bug. The controller is executed under the cmk-agent user, which has limited privileges, e. Upon first try, “cmk-agent-ctl register. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. 2 system. Please provide me with the output of: systemctl status check-mk-agent. CMK agent is up and running, host is added to Check MK server and now I want to set up TLS connection. You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. XXX. com. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. com:443 -i cmk --user automation . It has to match the actual hostname used by the Checkmk server, found under “Setup” > “Hosts”. The agent controller is well deployed and configured : “C:Program Files (x86)checkmkservicecmk-agent-ctl. I want to enable global registration via Hostname for other agents too, so I’ve enabled a nginx-reverseproxy with following settings:Yes I did use the” cmk-agent-ctl register command, after that I got this message. Agent pairing; Read access to all hosts and folders; Write access to all hosts and folders; regards. 1. 1 Like. 0b4-1 OS: Ubuntu 20. Danach erfolgte die Registrierung und der Update Befehl. Thanks for having a look. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. XXX. CMK version:2. 2. 2. Without register, the communication will handle also via port 8000, so you need to clarify if this port is open. In your case doing proxy. Please provide me with the output of: systemctl status check-mk-agent. ago. For more information try --help Command for registration. Anyhow when registering the usual way as I did it. 6 I have an external cloud host that I would like to monitor with in-house CMK server. socket failed. The hosts agent supports TLS, but it is not being used. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. Here it makes sense to pass the required registration information directly via the command. OS version: Rocky Linux release 9. I created the folder manually and changed ownership, and now the registration. 0p15 OS version: TrueNAS SCALE 22. After the installation everything worked. Welcome to the Checkmk User Guide. 0p6. 1. 0. This worked perfectly fine in CMK 2. 1. 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. SebLthr June 14, 2022, 8:17am 1. Installing an agent and starting monitoring was straightforward - everything happens over SSH. 0. B. d, only the check-mk-agent can be found: [root@jumphost]# cmk-agent-ctl register --hostname myclient \. This might be a bug. CMK version: 2. The user used for registering has admin privileges at checkmk and is able to see the global setting at the webui. Das funktioniert und auch eventuelle Fehler: TLS is not activated on monitored host verschwinden. 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. This option is only available in the Cloud Edition. This can be problematic if you are monitoring the same host from a site running Checkmk version 2. Bei der Registrierung wurde in den Anleitungen von chekmk mit dem “automation” User gearbeitet, ich habe es mit dem cmkadmin gemacht was bei den. 4. Now you need to register the agnet for TLS handshake. We strongly recommend to enable TLS by registering the host to the site (using the cmk-agent-ctl register command on the monitored host). service; After that you can register your hosts as usual. 02. Reloading xinetd Activating systemd unit 'check-mk-agent. As suggested in another post i read i checked:-that port 8000 is open-omd config show | grep AGENT_RECEIVER show port 8000cmk-agent-ctl register --server cmkserver:443 --trust-cert --site cmksite --user username --password password --hostname monitoringhost On Debian 11 if got the following outputCMK version: 2. ” failed with this error: "Request failed with code 500 Internal Server Error: Internal Server Error"root@linux# cmk-agent-ctl register --hostname localhost --server mycmkserver --site mysite --user cmkadmin. CMK Version: CRE 2. cre root@9529f647cd27:/# omd sites SITE VERSION COMMENTS cmk 2. wants/check-mk-agent. When I try to register the agent on the host system with: cmk-agent-ctl register --hostname some_hostname --server 127. C:\Program Files (x86)\checkmk\service>cmk-agent-ctl. py page via wget when I supply the correct credentials. 1 Like. com:8000 --site itbetrieb --user automation --password xxxxxxxx --trust-cert -vv Version: 2. this is initiated by the cloud host contacting CMK server behind our office. 0. 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. rs:41: Loaded config from. Explcit host: xxx. The cmk-agent user is created during the installation of the agent. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. ” 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. exe register --hostname HOST --server SERVER: 8001 --site SITE --user USER. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. socket'. 0, that will not be possible. 0 2. After the installation everything worked. 0. 0. cmk-update-agent register -v -H COMPUTERNAME -U register -S xxxxxxxxxxxxxxxxx. 0p20 Debian 11 Hi everyone, below is the output of the “cmk-agent-ctl. 1 the monitoring data sent from the monitored host to the monitoring server is TLS encrypted and compressed by default. ” 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. check_für das Abfragen von Webseiten. The Agent Receiver tells the Agent Controller. Reload check_mk configuration using below command –. de --site monitoring --user cmkadmin. When trying to register the checkmk agent: Access is denied:. domain. DOH I forgot I had set a custom port for agent receiver as i had a conflict for 8000 on my docker host. 1. deb The monitored system is in a local network and have. Could you please check who is claiming port 6556? ss -tulpn | grep 6556 This should be cmk-agent-ctl in daemon mode. The challenge is registering an agent, i. Unfortunately, the problem remains: C:WINDOWSsystem32>"C:Program Files (x86)checkmkservicecmk-agent-ctl. 1:8655 --site cmk --user cmk_admin. The Windows agent. 0) master 1. If it is xinetd remove the. 0p24 to 2. If the host is monitored by multiple sites, you must register to all of them. mictlancihuatll. However, there is a difference between console output of “cmk-agent-ctl status” and “cmk_agent_ctl_status” from agent output (downloaded via “Download. 1 and the site to 2. This was not expected as I created rules in “Agent controller” {'agent_ctl_enabled': True}. 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. Hi, 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. exe" register --hostname s3mo-tape. 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. com. 0p15. Hosts, services and agents. CMK 2. 0 adds the Agent Controller and new features to the agent script. If you forward port 9800 to 8000 then you also have to use port 9800 in your register command. slice (loaded active) and check_mk. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. 1. Are you trying to register the 2. Registration indeed is good. We will be asked for some information about the host. This morning all Windows Agents were suddenly no longer registered. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. socket systemctl status cmk-agent-ctl-daemon. Er wird unter dem Benutzer cmk-agent ausgeführt, der nur beschränkte Rechte besitzt, z. One of my hosts is producing this error, while most others register fine: root@sshgateway:~# cmk-agent-ctl register --hostname gateway. example. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. Das wurde erst mit b3 geändert, gilt aber nur für die erste Installation. 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. DOMAIN. OS is Ubuntu 22. 0p9. 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. I created the folder manually and changed ownership, and now the registration. cfg file, the registration information of the agent controller stays behind on uninstallation. Bei einem Netzwerkdienst liegt es nahe, den Dienst über das Netzwerk abzufragen und über diesen Weg auch zu überwachen. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. 1 sec. So, get this from “omd config show” on your CMK. Yes I did use the” cmk-agent-ctl register command,. The Linux agent of Checkmk version 2. sh script. 04. „TLS is not activated on monitored host (see details)“. 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. xyz:9800 --site cmk --user BAR --password FOO. The registration works. 0 onwards), you have to add the following rights (internal name "general. net -i STAR -P 'XXXXX' -U automation -H sys-vbr02 Apparently I’m too stupid to find the correct call for agent registration via REST API in any documentation. The agent-receiver of the first checkmk instance usually listens on port 8000, this is the port you need the agent to register against. This is the command we used to register the agent: C:Windowssystem32> "C:Program Files (x86)checkmkservicecmk-agent-ctl. 0. –user automation --password “xxx”. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. The controller is executed under the cmk-agent user, which has limited privileges, e. 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. The cmk-agent user is created during the installation of the agent. TLD -i SITE-NAME -U USERNAME This worked perfectly fine in CMK 2. 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. 1. Sie können sich mit cmk-agent-ctl help die Kommandohilfe anzeigen lassen, auch spezifisch für die verfügbaren Subkommandos, z. 0. To summarize: If you want to customize a Checkmk configuration and activate the changes, in Nagios you will subsequently require: OMD [mysite]:~$ cmk -R. 4. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. DOMAIN. But nothing worked. 0 adds the Agent Controller and new features to the agent program. exe to register the Agent Controller. cmk-update-agent register -s monitor2 -i mysite -H monitor2 -U cmkadmin. cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. CMK 2. ColinP November 12, 2022, 12:44pm 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. gerhards. Distribute below files from new baked agent to all agents that were baked with expired certificate. service: Scheduled restart job, restart counter is at 2. Für Linux habe ich cmk-agent-ctl register --hostname xxx --server. CMK version: 2. 0 2. exe' register -s checkmk. net -i STAR -P 'XXXXX' -U automation -H sys-vbr02The hosts agent supports TLS, but it is not being used. domain. 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. 0. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. 2 system. omd stop mysite. no login shell, and is used only for data transfer. I try with: cmk-agent-ctl register --hostname MYHOST --server CMKHOST --site MYSITE --user cmkadmin --password ‘MYPASSWORD’ Then I get the. 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. 6. I have the server up and running and ~50 VMs online, all is working well. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. Back on server, Add server under hosts. deb Monitored System (Host): Checkmk Agent version: 2. exe register --trust-cert --hostname mein. pem. Diese werden auch als aktive Checks bezeichnet. 1. WARNING: The Agent Controller is operating in an insecure mode! To secure the connection run cmk-agent-ctl register. cmk-agent-ctl delete-all --enable-insecure-connections; cmk-agent-ctl status; cmk-agent-ctl register --hostname $(hostname -f) --server checkmk21-prod. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. 5 LTS monitored system (Host) Package: check-mk-agent_2. The cmk-agent user was sucessfully created. This might be a bug. We’ll come back to you to ask for. 1 gave 404 Not Found: Host 127. net -i STAR -P 'XXXXX' -U automation -H sys-vbr02It seams you use a Debian system. mschlenker (Mattias. 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. You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. The registration works. Welcome to Checkmk. Ausgabe ist: Local: Hier scheint alles ok zu seine, nur taucht der Host im. service I see this error: ERROR [cmk_agent_ctl] Failed to listen on TCP socket for incoming pull connections. g. Agent Registration (Pairing) for TLS Encryption. In the following Monitoring agents box, you specify two important options for the auto-registration. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. 4:8000 --site cmk --user cmkadmin --password password Here I still have the above issue… (and I only can use IP addresses no DNS names). 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. So if you make any changes to the config file then you need to reload configuration or restart the agent. Password: explicit. This port can be found out via omd config > Basics > AGENT_RECEIVER_PORT Of course, this port has to be exposed for the. Checkmk Server: Checkmk version: 2. In your case doing proxy. Sie können sich mit. If I try to register it with the command: cmk-agent-ctl register --detect-proxy --hostname FOO --server bla. to switch your agent into SSL mode (and not legacy mode), but that’s a different subject. 0. 1. If you haven’t done yet please register the agent controller as well. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. Ultimately, Checkmk was showing the agents were not registered because they were not in fact registered. exe' register -s checkmk. 1. 5. 1. when i executing the command remotely via powershell i’m. 1. echo y|sudo cmk-agent-ctl register --hostname vmansible01 –server vmcheckmk01. sh script. 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. 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. Glaube das forum war gerade weg aber um deine Fragen zu beantworten: “C:Program Files (x86)checkmkservicecmk-agent-ctl. 1. 1. cmk-agent-ctl register --server cmkserver:443 --trust-cert --site cmksite --user username --password password --hostname monitoringhost Then take a look it /etc/xinet. 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. NOTE: A registered host will refuse all unencrypted connections. 45. Baked and signed the agent. OK, please also stop cmk-agent-ctl-daemon. service You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. 75:8000 --site robot --user cmkadmin --password password -vv. 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. This might be a bug. When you have done all this, install the agent again and it will work properly. omd su mysite. Agent Updater (Agentenbäckerei), Discovery des Agent Controller Ports, mit Transportverschlüsselung. CMK 2. Reloading xinetd Activating systemd unit. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. 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. Im justed deleted the automation User. exe' register -s checkmk. 4. CMK Checkmk Enterprise Edition 2. 0 adds the Agent Controller and new features to the agent program. But if cmk-agent-ctl cannot be started, access fails. 0b4-1_all. service. We strongly recommend to enable TLS by registering the host to the site (using the `cmk-agent-ctl register`. Dazu verwendet Checkmk teils eigene, teils bereits existierende Plugins. And now. latest (2. Username: xxxxx@pve. no login shell, and is used only for data transfer. Are you aware of any automation scripts/commands methods with registering agent/TLS for over 800+ hosts? Hello together, i got the an Simular Issue after an Upgrade from the 2. The agent control use the port 8000 for communication. This might be a bug. After that I got the error: Version: 2. Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. server --server mein. mit cmk-agent-ctl help register. 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. py script to the host to be monitored (both can be found at ~/share/check_mk/agents/plugins on the Checkmk server). socket failed. root@mgmonitor02:~# cmk-agent-ctl register --hostname MGMonitor --server localhost --site sitename --user omd --password omd ERROR [cmk_agent_ctl] Failed to discover agent receiver port from Checkmk REST API, both with and c3rberus (MD) December 17, 2021, 4:52am 3. Hello, I have a problem with enabling TLS in CheckMk 2. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. exe” register --site yousitename --server yourcmkserver --user automation --hostname windows_box_hostname --password1. Alle Hosts angelegt mit Hostname und IP Adresse. ). socket systemctl status cmk-agent-ctl-daemon. 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”). " Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. Das zu bestätigende Server-Zertifikat haben wir aus Gründen der. 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. g. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. I am not able to debug the cmk-agent-ctl since it is in binary form: You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. If you want to use the agent in legacy mode, you need to disable cmk-agent-ctl in bakery rules. to checkmk. I should have mentioned I have a network device sitting in-between which is presenting a different certificate (the wildcard cert signed by a public CA) and I haven’t changed any CA settings outside the web UI. CMK version: 2. I am trying to register an agent installed on a Windows Server 2019. XXX. Dann hast du die Herangehensweise schon gefunden, wenn man die Zertifikate noch nicht im Griff hat. no login shell, and is used only for data transfer. I am not able to debug the cmk-agent-ctl since it is in. The controller is executed under the cmk-agent user, which has limited privileges, e. CMK Version: 2. 1. exe greift auf ihn zu. Welcome to Checkmk. 1 using the Agent Controller. 1. For example, the registration crashed with "500 Internal Server Error" for users without the permission "Write access to all hosts and folders". Unfortunately, the problem remains: C:\WINDOWS\system32>"C:\Program Files (x86)\checkmk\service\cmk-agent-ctl. cmk-update-agent –v. domain. To be more precise:. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. Checkmk Community Trouble after upgrading to 2. Die Registrierung klappt einfach nicht (die Hosts sind aber auch schon aus der 2. , I had to put the public hostname). Hi everyone, below is the output of the “cmk-agent-ctl. 1. 4 --server 1. This morning all Windows Agents were suddenly no longer registered. ” failed with this error: "Request failed with code 500 Internal Server Error: Internal Server Error" root@linux# cmk-agent-ctl register --hostname localhost --server mycmkserver --site mysite --user cmkadmin Waren die angegebenen Werte korrekt, werden Sie aufgefordert, die Identität der Checkmk-Instanz zu bestätigen, zu der Sie die Verbindung herstellen wollen. 0 or earlier. 0. The registration then aborts, since we cannot continue without knowing the correct port. 1 Like. 1. 0. Sie können sich mit cmk-agent-ctl help die Kommandohilfe anzeigen lassen, auch spezifisch für die verfügbaren Subkommandos, z. CMK version: 2. Now you need to register the agnet for TLS handshake. 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. deb. Der Linux-Agent der Checkmk-Version 2.