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. 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. 10. 5 LTS monitored system (Host) Package: check-mk-agent_2. 4. 1. You’ll also need to do something like cmk-agent-ctl register. exe" status It also seems that you have multiple sites on your Checkmk server based on port 8001 in the response. Now you need to register the agnet for TLS handshake. Tested adding both a firewall run on the 2019 server for both 6556 in and out. net -i STAR -P 'XXXXX' -U automation -H sys-vbr02The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. 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. 0. socket'. 0p20 Debian 11. The cmk-agent user is created during the installation of the agent. Record Keeping Keep a copy of your application and all submitted documents for your records. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. exe' register -s checkmk. Going from one patch level to another one (like from p16 to p20) basically is: dpkg -i checkmk…new. but this just ended in automation2 searching for automation accounts secrets, removed automation2. 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. 1 sec. 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). 2. 0b4_0 raw OS: Ubuntu 20. Just to. After a reboot the cmk-agent-ctl-daemon and the check-mk-agent. Monitoring Windows - The new agent for Windows in detail. Now you need to register the agnet for TLS handshake. 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”). 2 system. Now you need to register the agnet for TLS handshake. 75:8000 --site robot --user cmkadmin --password password -vv. For example, the registration crashed with "500 Internal Server Error" for users without the permission "Write access to all hosts and folders". 1 and the site to 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 Waren die angegebenen Werte korrekt, werden Sie aufgefordert, die Identität der Checkmk-Instanz zu bestätigen, zu der Sie die Verbindung herstellen wollen. exe register --hostname HOST --server SERVER: 8001 --site SITE --user USER. Der Benutzer cmk-agent wird während der Installation des Agentenpakets. The controller is executed under the cmk-agent user, which has limited privileges, e. Linux überwachen - Der neue Agent für Linux im Detail. TLD -i SITE-NAME -U USERNAME This worked perfectly fine in CMK 2. You can learn how to use the agent here. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. But if cmk-agent-ctl cannot be started, access fails. latest (2. 489987 +01:00] INFO [cmk_agent_ctl] srclib. Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. 0. 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. Yes I did use the” cmk-agent-ctl register command, after that I got this message. I created the folder manually and changed ownership, and now the registration. 0p23 of Checkmk is ready for download. The agent control use the port 8000 for communication. exe' register -s checkmk. 7. com--site FOO --user BAR -. This can be problematic if you are monitoring the same host from a site running Checkmk version 2. 2 system. 0 then you will find the systemd unit files. worked fine for me. mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. 0b4-1 OS: Ubuntu 20. 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. 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. Agent Controller is not running, no config files can be found in the systemd directory and within xinetd. To summarize: If you want to customize a Checkmk configuration and activate the changes, in Nagios you will subsequently require: OMD [mysite]:~$ cmk -R. NOTE: A registered host will refuse all unencrypted connections. Alle Hosts angelegt mit Hostname und IP Adresse. 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. 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”). service. 1. TLD -i SITE-NAME -U USERNAME This worked perfectly fine in CMK 2. The systemd is version 246. TLD -i SITE-NAME -U USERNAME This worked perfectly fine in CMK 2. This is a bug of the client cmk-agent-ctl. If I try to register it with the command: cmk-agent-ctl register --detect-proxy --hostname FOO --server bla. 1. OS is Ubuntu 22. So now you must de-register, on the host: cmk-agent-ctl delete-all --enable-insecure-connections Then on the CMK server: Properties of host, then menu entry Host > Remove TLS registration Afterwards connections should work albeit insecure. Checkmk Raw Edition 2. Hello. example. exe greift auf ihn zu. Thank you very much to assist me on this way! system (system) Closed September 26, 2023, 4:01pm 9. serviceThe Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. Just in case: We are prepared for cases where the agent controller cannot be started or. Tahnks a lot for your tip. The cmk-agent user is created during the installation of the agent. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. socket failed. ColinP November 12, 2022, 12:44pm 1. service: Scheduled restart job, restart counter is at 2. 0p11 Agent socket: inoperational (!!) Version: 2. You can learn how to use the agent here. Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. checkmk-v2-1. 0. WalterH (Walter Hofstädtler) May 30, 2022, 5:42pm 31. As suggested in another post i read i checked:-that port 8000 is open-omd config show | grep AGENT_RECEIVER show port 8000The registration then aborts, since we cannot continue without knowing the correct port. gawainsr2 August 15, 2022, 5:52pm 1. 0. C:\ProgramData\checkmk\agent\config\cas\all_certs. This worked perfectly fine in CMK 2. d/ there might be a residual configuration file called checkmk or similar. 1. Redirecting to /bin/systemctl reload xinetd. Agent auf allen Monitored Hosts installiert. Welcome to the Checkmk User Guide. I had to add the checkmk user again. 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. After the installation everything worked. If the host is monitored by multiple sites, you must register to all of them. service should work as expected. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. 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. OS version: Ubuntu Server. The cmk-agent user was sucessfully created. Das funktioniert und auch eventuelle Fehler: TLS is not activated on monitored host verschwinden. If it is xinetd remove the. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. 6 Likes. py page via wget when I supply the correct credentials. 1. Ping works, Agent reports Communication Failed: timed out. 2. 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. CMK version: 2. If you use the bakery, the agent was baked with enabled cmk-agent-ctl. When I try to register the agent on the host system with: cmk-agent-ctl register --hostname some_hostname --server 127. cmk-agent-ctl register --hostname app-a. The cmk-agent user was sucessfully created. cmk-update-agent –v. 0 the new Linux agent with the Agent Controller supports the registered, TLS-encrypted and compressed pull mode. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. 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. 5. , I had to put the public hostname). 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. CMK 2. socket systemctl disable cmk-agent-ctl-daemon. mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. socket Then restart your xinetd (or just reboot). The new TLS feature is need to register with cmk-agent-ctl register command. I created the folder manually and changed ownership, and now the registration. Copy the cmk-update-agent binary or the cmk_update_agent. 168. This option is only available in the Cloud Edition. . The controller is executed under the cmk-agent user, which has limited privileges, e. 0p9. 0p15 OS version: TrueNAS SCALE 22. SebLthr June 14, 2022, 8:17am 1. Registration indeed is good. I am trying to add new servers with: amnesiac ≫ [ 10:47:25 ] ≫ ~ $ cmk-agent-ctl register-new --server. 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. –hostname WindowsServer ^. OS version: TrueNAS SCALE 22. After a reboot the cmk-agent-ctl-daemon and the check-mk-agent. Checkmk Enterprise Edition 2. 1. The cmk-agent user was sucessfully created. 1. 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. Register. 0p22 agent by running cmk-agent-ctl on the 2. 1. This might be a bug. ago. The Windows agent. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. Agent pairing; Read access to all hosts and foldersSince Checkmk version 2. After the installation everything worked. Hi everybody, i’am new to checkmk and trying to configure the agent but getting the same message, i couldn’t understand why. Bei einem Netzwerkdienst liegt es nahe, den Dienst über das Netzwerk abzufragen und über diesen Weg auch zu überwachen. The service is started. 1 server? You have to run the cmk-agent-ctl on the machine running the agent, not from the server. The controller is executed under the cmk-agent user, which has limited privileges, e. OS version: Ubuntu Server 22. 0. deb. Anschließend installieren Sie den Agenten mit allen Konfigurationsdetails für den zu überwachenden Host durch einen abschließenden Aufruf des Agent-Updater-Plugins. Please execute with sufficient permissions (maybe try 'sudo'). cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. 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. Address: 401 Hartwig Court, 1208 Wharf Street, Victoria, BC, V8W 2P5, CanadaCTP Distributors. 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. agent_pairing") to their role. 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. 0b4_0. 1. Welcome to Checkmk. 489987 +01:00] INFO [cmk_agent_ctl] srclib. 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. no login shell, and is used only for data transfer. B. to checkmk. 0 2. raptorswithhats. Could you please check who is claiming port 6556? ss -tulpn | grep 6556 This should be cmk-agent-ctl in daemon mode. Deutsch. 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. You can confirm this by telnetting from your OMD site to the monitored server on tcp port 6556:Checkmk Enterprise Edition 2. Only after I manually ran “cmk-agent-ctl register” it listened again. CMK version: 2. Agent Victoria, British Columbia 1970's Members Murray Acton ~ Guitar, Vocals Steve Andreas ~ Bass, Vocals Peter Bryant ~ Drums, Vocals Wayne Darling ~. (We used cmk-agent-ctl proxy-register → deploy json to host → cmk-agent-ctl import . 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. If I try to register it with the command: cmk-agent-ctl register --detect-proxy --hostname FOO --server bla. Open the terminal that you want to monitor on your. 1. You can learn how to use the agent here. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. Nun wird der Service „CheckMK Agent“ – Service mit Warning angezeigt und es liegt wohl daran. omd stop mysite. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. 1. socket (failed failed) so I stopped and disabled them, then did systemctl daemon-reload and systemctl. Install went fine. The controller is executed under the cmk-agent user, which has limited privileges, e. If you forward port 9800 to 8000 then you also have to use port 9800 in your register command. Warning: This version breaks the agent receiver on IPv4-only Checkmk servers which have completely disabled IPv6 support on kernel level. 0p9. net -i STAR -P 'XXXXX' -U automation -H sys-vbr02Output 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. 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. 1. 0p25. 1 agent. it --server 192. 2 system. 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. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. cmk-agent-ctl. This morning all Windows Agents were suddenly no longer registered. 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. 1 does not exist. I had to add the checkmk user again. 4. keine Login-Shell hat und nur zur Datenübertragung genutzt wird. 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. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. 0 OS Version: Appliance 1. DOMAIN. –user automation --password “xxx”. Version: 2. deb Now the cmk-agent-ctl-daemon. In your case. 0p22 agent by running cmk-agent-ctl on the 2. 489987 +01:00] INFO [cmk_agent_ctl] srclib. After the installation everything worked. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. CMK Checkmk Enterprise Edition 2. 1. example. 4. no login shell, and is used only for data transfer. OS: Windows Server 2019. From its very beginning, monitoring Windows servers has been one of the most important tasks performed by Checkmk. If it is xinetd remove the Xinetd config file for the Checkmk agent and just reinstall the agent package. ourcompany. g. Upon first try, “cmk-agent-ctl register. If the host is monitored by multiple sites, you must register to all of them. 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. Registration indeed is good. Einen auf den Server auf der Docker Service läuft (OpenSuse Tumbleweed), sowie einen Windows Server 2016. In Checkmk version 2. Sie können sich mit cmk-agent-ctl help die Kommandohilfe anzeigen lassen, auch spezifisch für die verfügbaren Subkommandos, z. wants/check-mk-agent. OS: linux. You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. Are the Linux systems affected by cmk-agent-ctl not starting using a IPv4 only setup?. 0 last week. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. If I try to register it with the command: cmk-agent-ctl register --detect-proxy --hostname FOO --server bla. 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 created the folder manually and changed ownership, and now the registration. The agent controller is well deployed and configured : “C:Program Files (x86)checkmkservicecmk-agent-ctl. When you have done all this, install the agent again and it will work properly. Upon first try, “cmk-agent-ctl register. 04 LTS. Or if you have a specific role for a admin user, go to: Roles & permissions and see this permissions. 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. 0. Sehr beliebt ist z. Unfortunately, the problem remains: C:WINDOWSsystem32>"C:Program Files (x86)checkmkservicecmk-agent-ctl. eu --site monitoring ^. 0p6. Could you please check who is claiming port 6556?. Thanks for your responses! @cyr0nk0r I rebaked the Agent using HTTP only and got rid of the. 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. service1. This might be a bug. 0 2. g. 8 KB But the monitoring is not able to query the host anymore:I can’t use the cmk-agent-ctl register command when my host resists on a slave site. Tested turning off firewall on 2019. @SeyRyuu I have potential good news for you, then… I resolved this yesterday . The registration is done using the Agent Controller cmk-agent-ctl, which provides a command interface for configuring the connections. when i executing the command remotely via powershell i’m. 0. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. exe” register --site yousitename --server yourcmkserver --user automation --hostname windows_box_hostname --password 1. " Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. CMK version: 2. slice (loaded active) and check_mk. exit # leave the site user shell. Hello. 0 adds the Agent Controller and new features to the agent program. 0p15. com--site FOO --user BAR -. Version: 2. 1 Like. The register command cmk-agent-ctl register often gets confused with the Agent update registration cmk-agent-update register, but these are two different registration types: one for TLS encryption and one for registering automatic updates (Agent Bakery, cee). 1. The Agent Receiver tells the Agent Controller. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. gerhards. user -vv INFO [cmk_agent_ctl] starting. Dann hast du die Herangehensweise schon gefunden, wenn man die Zertifikate noch nicht im Griff hat. 1. Welcome to Checkmk. domain. I created the folder manually and changed ownership, and now the registration. mit cmk-agent-ctl help register. Hello David, unfortunately --trust-cert changes nothing. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. I installed the CheckMK Agent on a TrueNAS SCALE host. Host can telnet on port 8000 of the server and a curl request works. Director of Registration and Certification at the address noted below. local:8000 -s checkmk. ). When you have done all this, install the agent again and it will work properly. The cmk-agent user is created during the installation of the agent. service: Scheduled restart job, restart counter is at 2. 0. 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”). Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. In checkmk for the host service got below warning. I get a return with value: 16 The web test connection has a successfull ping but the agent. check_für das Abfragen von Webseiten. omd update. 1. sh script. local -i home -U cmkadmin ERROR [cmk_agent_ctl] Failed to discover agent receiver port from Checkmk REST API, both. I am trying to register an agent installed on a Windows Server 2019. 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. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. 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. 1. no login shell, and is used only for data transfer. With that flag added the machine registers just fine. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. ss -tulpn | grep 6556 tcp LISTEN 0 4096 *:6556 : users:((“cmk-agent-ctl”,pid=425,fd=9)) On the. Hosts and CheckMK use a current Debian Bullseye and I use CheckMK Server and Client 2. 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. 6. Thank you again Anders! My humility and I will go back into the shadows! Wenn ich aber beim Registrieren den richtigen Port mitgebe, dann gehts…. Specify the correct port when calling the registration command. g. Hi everyone, below is the output of the “cmk-agent-ctl. If you use the bakery, the agent was baked with enabled cmk-agent-ctl. 0p12. Dann hast du die Herangehensweise schon gefunden, wenn man die Zertifikate noch nicht im Griff hat. The controller is executed under the cmk-agent user, which has limited privileges, e. rs:14: st… As mentioned in another thread, you actually ran into a newly implemented CSR version check that’s. no login shell, and is used only for data transfer. omd su mysite. We strongly recommend to enable TLS by registering the host to the site (using the `cmk-agent-ctl register`. Even with custom checks. We strongly recommend to enable TLS by registering the host to the site (using the `cmk-agent-ctl register` command on the monitored host). But if cmk-agent-ctl cannot be started, access fails. 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. Any hints? aeckstein (Andre Eckstein) October 25, 2022, 4:36pm 4. domain. The registration is done using the Agent Controller cmk-agent-ctl, which provides a command interface for configuring the connections. mydomain. 1. The Linux agent of Checkmk version 2. 2 Delete all directories/files of the agent controller from the host. 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. I have around 60 Windows servers which I have checked using a backed agent. 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.