exe – register --trust-cert’ USAGE: cmk-agent-ctl. server --server mein. However, there is a difference between console output of “cmk-agent-ctl status” and “cmk_agent_ctl_status” from agent output (downloaded via “Download. INFO [cmk_agent_ctl::site_spec] Failed to discover agent receiver port using ERROR [cmk_agent_ctl] Failed to discover agent receiver port from Checkmk REST API, both with and Run with verbose output to see errors. net -i STAR -P 'XXXXX' -U automation -H sys-vbr02Apparently I’m too stupid to find the correct call for agent registration via REST API in any documentation. 1. Dann hast du die Herangehensweise schon gefunden, wenn man die Zertifikate noch nicht im Griff hat. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. 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. The Hostname is the familiar name that Checkmk will use for the monitoring. 0p13. 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. 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. 1. 2. OS version: TrueNAS SCALE 22. Anyhow when registering the usual way as I did it. 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. 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. 0p16-1. service systemctl disable cmk-agent-ctl-daemon. Now you need to register the agnet for TLS handshake. Registration indeed is good. 0 or earlier. agent_pairing") to their role. TLD -i SITE-NAME -U USERNAME This worked perfectly fine in CMK 2. WalterH (Walter Hofstädtler) May 30, 2022, 5:42pm 31. I had to add the checkmk user again. 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 hosts agent supports TLS, but it is not being used. 57. 0 adds the Agent Controller and new features to the agent script. Er wird unter dem Benutzer cmk-agent ausgeführt, der nur beschränkte Rechte besitzt, z. exe to register the Agent Controller. But when the distributed server wants to query the remote agent: [agent] Communication failed: [SSL: SSLV3_ALERT_HANDSHAKE_FAILURE] sslv3 alert handshake failure (_ssl. OS is Ubuntu 22. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. Rg, ChristianWindows installer ¶. 1. Back on server, Add server under hosts. Yes I did use the” cmk-agent-ctl register command, after that I got this message. 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. ourcompany. eu --site monitoring ^. 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: Scheduled restart job, restart counter is at 2. Anschließend installieren Sie den Agenten mit allen Konfigurationsdetails für den zu überwachenden Host durch einen abschließenden Aufruf des Agent-Updater-Plugins. You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. 0. 0p15. 6. Hosts and CheckMK use a current Debian Bullseye and I use CheckMK Server and Client 2. 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. 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. I am trying to register an agent installed on a Windows Server 2019. Dann hast du die Herangehensweise schon gefunden, wenn man die Zertifikate noch nicht im Griff hat. rs:41: Loaded config from. 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. service1. You can learn how to use the agent here. 0 onwards), you have to add the following rights (internal name "general. 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. Checkmk Community CMK Agent Controller not working (CentOS 7) - CMK 2. service: Start request repeated too quickly. redacted. 0. socket systemctl status cmk-agent-ctl-daemon. 0p10 OS: linux The hosts agent supports TLS, but it is not being used. no login shell, and is used only for data transfer. $ sudo cmk-agent-ctl register --hostname localhost --server checkmk. de --server monitor. I accept the certificate. checkmk-v2-1. py script to the host to be monitored (both can be found at ~/share/check_mk/agents/plugins on the Checkmk server). I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. I want to enable global registration via Hostname for other agents too, so I’ve enabled a nginx-reverseproxy with following settings:Hi, I have a weird problem with 3 nodes (Ubuntu 20. exe greift auf ihn zu. 1 gave 404 Not Found: Host 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”). Please provide me with the output of: systemctl status check-mk-agent. Hello. 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). OS version: Rocky Linux release 9. 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. If you forward port 9800 to 8000 then you also have to use port 9800 in your register command. 0/26. Run communication test. exe register --hostname HOST --server SERVER: 8001 --site SITE --user USER. If the host is monitored by multiple sites, you must register to. 1. The cmk-agent user is created during the installation of the agent. @SeyRyuu I have potential good news for you, then… I resolved this yesterday . This can be problematic if you are monitoring the same host from a site running Checkmk version 2. If I try to register it with the command: cmk-agent-ctl register --detect-proxy --hostname FOO --server bla. windows. when i executing the command remotely via powershell i’m. What I already tried: I tried only listening on ports 80 and 443 for caddy, with{"serverDuration": 18, "requestCorrelationId": "a42ce0e7c5a94b2c8eb93184953f1289"} Checkmk Knowledge Base {"serverDuration": 18, "requestCorrelationId. 0 onwards), you have to add the following rights (internal name “general. The challenge is registering an agent, i. You’ll also need to do something like cmk-agent-ctl register. Ok, so the user I’m using to do the agent registration. sh script. 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. Just like it’s the case for the /etc/cmk-update-agent. 2. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. 04. I had to add the checkmk user again. 2 Delete all directories/files of the agent controller from the host. service: Scheduled restart job, restart counter is at 2. All commands to be executed on the host to be monitored. Monthly Promotions Product Specials and Monthly Flyers Emailed Right to You! Online Ordering Check Price and. DOMAIN. Yes I did use the” cmk-agent-ctl register command,. If you want to use the agent in legacy mode, you need to disable cmk-agent-ctl in bakery rules. I am using the Raw edition of CheckMK for my (rather large) Hobbyist stuff. 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. sh script. The exact command line is this: cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. This component is separate from the Agent Updater. service --now $ sudo systemctl restart check-mk-agent. On every host I register that way I don’t get any agent data because of the Issue Host is registe. 1. Ultimately, Checkmk was showing the agents were not registered because they were not in fact registered. server --site Main --user cmkadmin --verbose erscheint folgendes: image 1902×257 114 KB. You can learn how to use the agent here. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. g. Register the host on the Checkmk server by invoking cmk-update-agent register. 2. This topic was automatically closed 365 days after the last reply. If the host is monitored by multiple sites, you must register to all of them. no login shell, and is used only for data transfer. The windows installer supports the following command line arguments: /S - runs the installer silently /D= - sets the default installation directory. 1:8655 --site cmk --user cmk_admin. 4. 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. 514. 04 LTS. 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”). 1. 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. Bulk Consent Manager. The agent controller is well deployed and configured : “C:Program Files (x86)checkmkservicecmk-agent-ctl. I was using 8101 so after i set this it worked perfectly. Finally, in Bake agent packages, activate. Currently, only systemd on the x86_64 platform is. cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. Upon first try, “cmk-agent-ctl register. It seams you use a Debian system. rs:14: starting [2023-02-10 12:54:18. 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. no login shell, and is used only for data transfer. net -i STAR -P 'XXXXX' -U automation -H sys-vbr02It seams you use a Debian system. (We used cmk-agent-ctl proxy-register → deploy json to host → cmk-agent-ctl import . B. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. Attempting to register at checkmk. mit cmk-agent-ctl help register. Please provide me with the output of: systemctl status check-mk-agent. local:8000 -s checkmk. Für Linux habe ich cmk-agent-ctl register --hostname xxx --server. Redirecting to /bin/systemctl reload xinetd. cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. Install went fine. Hi @P. Something like this. p3 OS version: CentOS 8. 0 adds the Agent Controller and new features to the agent program. TLD -i SITE-NAME -U USERNAME. 0. Specify the correct port when calling the registration command. domain. The controller is executed under the cmk-agent user, which has limited privileges, e. 6 Likes. 04. I feel like I’m missing something real obvious. omd su mysite. The cmk-agent user was sucessfully created. 0. 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. (We used cmk-agent-ctl proxy-register → deploy json to host → cmk-agent-ctl import . Bei der Registrierung der Agents ergibt sich bei beiden Server folgender Fehler: <HOST>:~ # cmk-agent-ctl register --hostname <HOSTNAME> --server 192. 6 I have an external cloud host that I would like to monitor with in-house CMK server. Join thousands of sysadmins and receive free professional tips and tricks to help you monitor your IT-infrastructure. But if cmk-agent-ctl cannot be started, access fails. 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. 1. The systemd is version 246. Here is what I have done roughly: Added and configured the agent rules. CMK version: 2. cfg file, the registration information of the agent controller stays behind on uninstallation. 1. In your case doing proxy. Bei einem Netzwerkdienst liegt es nahe, den Dienst über das Netzwerk abzufragen und über diesen Weg auch zu überwachen. cd /etc sudo rm -r check_mk cd /var/lib sudo rm -r check_mk_agent sudo rm -r cmk-agent cd /usr/lib sudo rm -r check_mk_agent sudo systemctl daemon-reload. 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. CMK 2. service: Scheduled restart job, restart counter is at 2. Diese werden auch als aktive Checks bezeichnet. The hosts agent supports TLS, but it is not being used. CMK 2. –user automation --password “xxx”. 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. This might be a bug. 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. 1. : checkmk:~# systemctl status cmk-agent-ctl-daemon. After installation the check_mk_agent service should have started automatically. 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. From its very beginning, monitoring Windows servers has been one of the most important tasks performed by Checkmk. 2. CMK version: 2. 1. d, only the check-mk-agent can be found: [root@jumphost]# cmk-agent-ctl register --hostname myclient . If it is systemd please give us the output of systemctl --version. 0, that will not be possible. Home ; Categories ;Registration indeed is good. Version: 2. 0. 0. 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. Distribute below files from new baked agent to all agents that were baked with expired certificate. service should work as expected. The cmk-agent user is created during the installation of the agent. I am trying to register an agent installed on a Windows Server 2019. /root/bin and make sure that /root/bin is in the PATH and before /usr/bin_ install the checkmk agent deb; wait for a few seconds (sleep 5) cp /root/bin/cmk-agent-ctl /usr/bin/ systemctl start cmk-agent-ctl-daemon. The exact command line is this: cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. 1. agent_pairing”) to his/her role. scheint mir noch nicht ganz ausgereift. The controller is executed under the cmk-agent user, which has limited privileges, e. Der Benutzer cmk-agent wird während der Installation des Agentenpakets. Could you please check who is claiming port 6556?. In any of these cases I can replace localhost with the actual hostname as well and the results don’t change (they’re identical). Dazu verwendet Checkmk teils eigene, teils bereits existierende Plugins. 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. You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. ago. 0 OS Version: Appliance 1. ). 0p23 OS version: Windows Server 2019 Essentials Error message: ERROR [cmk-agent-ctl] srcmain. We tried setting a firewall rule to the port 8000, we tried using the automation user, the checkmk_admin user, and a random admin user. Einen auf den Server auf der Docker Service läuft (OpenSuse Tumbleweed), sowie einen Windows Server 2016. 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. Director of Registration and Certification at the address noted below. 0. exe" status It also seems that you have multiple sites on your Checkmk server based on port 8001 in the response. 1. 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)\checkmk\service\cmk-agent-ctl. 0 then you will find the systemd unit files inside. 0p22 agent by running cmk-agent-ctl on the 2. 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. 3, no problem on installing, and registering the site and the localhost, but with windows keeps me throwing a crit state with the Check_MK Service. 0-1_all. The Agent Receiver tells the Agent Controller. Contact an admin if you think this should be re-opened. 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). $ cmk-update-agent register $ cmk-agent-ctl register. 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. 4. ╰─$ sudo cmk-agent-ctl status Version: 2. ” failed with this error: "Request failed with code 500 Internal Server Error: Internal Server Error"Danach erfolgte die Registrierung und der Update Befehl. 0. CMK version: 2. I am trying to add new servers with: amnesiac ≫ [ 10:47:25 ] ≫ ~ $ cmk-agent-ctl register-new --server. deb. 0) master 1. Troubleshooting. 2 system. , I had to put the public hostname). socket systemctl status cmk-agent-ctl-daemon. CMK 2. OK, please also stop cmk-agent-ctl-daemon. Tahnks a lot for your tip. Nun hast Du 2 Möglichkeiten: Entweder den controller für TLS registrieren (cmk-agent-ctl register -h für die Hilfe) oderCheckmk Enterprise Edition 2. . exe register --trust-cert -vv” command: [2023-02-10 12:54:18. 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. Yes I did use the” cmk-agent-ctl register command, after that I got this message. 0p11 Agent socket: inoperational (!!) Version: 2. NOTE: A registered host will refuse all unencrypted connections. If I try to register it with the command: cmk-agent-ctl register --detect-proxy --hostname FOO --server bla. rs:14: starting [2023-02-10 12:54:18. Hosts, services and agents. Whether the host is configured for the pull mode (all editions) or the push mode (only the Cloud Edition) makes no difference for the command examples. 0. Without register, the communication will handle also via port 8000, so you need to clarify if this port is open. ERROR [cmk_agent_ctl] Failed to run as user 'cmk-agent'. XXX. 1. My server proxmox follow the guide from checkmk, where create the user, policy, open port 6556, special agent. Welcome to Checkmk. CMK 2. Now the service is active and listening. 1 gave 404 Not Found: Host 127. If you want to use the agent in legacy mode, you need to disable cmk-agent-ctl in bakery rules. Hi @robin. 0. 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. Die Registrierung klappt einfach nicht (die Hosts sind aber auch schon aus der 2. cre default. service I see this error: ERROR [cmk_agent_ctl] Failed to listen on TCP socket for incoming pull connections. 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. omd start. XXX. cmk-agent-ctl register --hostname 1. 234. omd update. Sie können sich mit. 0p20 Debian 11. Tested turning off firewall on 2019. 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. Install the suitable Checkmk agent on the server you want to monitor and add the server as a host in Checkmk. 6. 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. 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. 4. 0 adds the Agent Controller and new features to the agent program. ss -tulpn | grep 6556 tcp LISTEN 0 4096 *:6556 : users:((“cmk-agent-ctl”,pid=425,fd=9)) On the. 2. 2 Delete all directories/files of the agent controller from the host. This one is listening at port 8000. If you use the bakery, the agent was baked with enabled cmk-agent-ctl. py script to the host to be monitored (both can be found at ~/share/check_mk/agents/plugins on the Checkmk server). root@kerneltalks # service xinetd reload. mit cmk-agent-ctl help. Another gotcha I came across was trying to run the register, make sure you are using admin cmd ( which you are ), then cut and paste the command in full : “C:Program Files (x86)checkmkservicecmk-agent-ctl. Could you please check who is claiming port 6556? ss -tulpn | grep 6556 This should be cmk-agent-ctl in daemon mode. 1 Like. Password: explicit. Segmentation fault (core dumped) The same result also with the all needed parameters for the registration. gerhards. 40. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. As suggested in another post i read i checked:-that port 8000 is open-omd config show | grep AGENT_RECEIVER show port 8000Description: Proxmox VE. 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…. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. 1. Upon first try, “cmk-agent-ctl register. The Windows agent. I created the folder manually and changed ownership, and now the registration. If you use the bakery, the agent was baked with enabled cmk-agent-ctl. slice (loaded active) and check_mk. 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. Reloading xinetd Activating systemd unit 'check-mk-agent. 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. The docker run command from the documentation is using -p 8000:8000 to bind that port externally. If there are leftovers from 2. 489987 +01:00] INFO [cmk_agent_ctl] srclib. 0p25. Hello David, unfortunately --trust-cert changes nothing. 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. 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. Here is the deep link to the section in the manual:. Ultimately, Checkmk was showing the agents were not registered because they were not in fact registered. 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. com:443 -i cmk --user automation . 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. deb Now the cmk-agent-ctl-daemon. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. The controller is executed under the cmk-agent user, which has limited privileges, e.