CMK 2. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. In case it is left out, the agent controller tries to query the port from the REST API. The exact command line is this: cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. 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). In your case doing proxy. 0 2. 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. This might be a bug. 1. 0 adds the Agent Controller and new features to the agent script. cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. . cfg file, the registration information of the agent controller stays behind on uninstallation. If you use the bakery, the agent was baked with enabled cmk-agent-ctl. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. 5. 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. service Ikkarus13 (Sascha Kunimünch) May 25, 2022, 1:18pm. rs:29: No connection could be made because the target. Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. 04 LTS. 0 the new Linux agent with the Agent Controller supports the registered, TLS-encrypted and compressed pull mode. tsi: Getting target agent configuration for host ‘localhost’ from deployment serverHi, looking for a windows variable to use to automate agent registration for 200+ hosts that queries hosts in “lowercase” as opposed to “uppercase” (yes our hosts are configured in lower case in Checkmk)So please stop and disable the services for the new agent controller: systemctl stop cmk-agent-ctl-daemon. 1. de--site meine_site --user user --password password --hostname mein-host. 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. 0p24 to 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. If you want to use the agent in legacy mode, you need to disable cmk-agent-ctl in bakery rules. deb The monitored system is in a local network and have. The cmk-agent user is created during the installation of the agent. To summarize: If you want to customize a Checkmk configuration and activate the changes, in Nagios you will subsequently require: OMD [mysite]:~$ cmk -R. Welcome to the Checkmk User Guide. 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. it --server 192. The challenge is registering an agent, i. 1 agent. e. We strongly recommend to enable TLS by registering the host to the site (using the `cmk-agent-ctl register` command on the monitored host). Unfortunately, the problem remains: C:WINDOWSsystem32>"C:Program Files (x86)checkmkservicecmk-agent-ctl. Nun wird der Service „CheckMK Agent“ – Service mit Warning angezeigt und es liegt wohl daran. 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. 0 adds the Agent Controller and new features to the agent script. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. 0 2. rs:14: starting [2023-02-10 12:54:18. XXX. 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. ). 0-1_all. Back on server, Add server under hosts. Wenn ich aber beim Registrieren den richtigen Port mitgebe, dann gehts…. Hello, I have a problem with enabling TLS in CheckMk 2. You can learn how to use the agent here. 0/26. 0. no login shell, and is used only for data transfer. 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”). OS version: TrueNAS SCALE 22. 1. The additional port 8000 seems necessary for creating TLS connection. wants/check-mk-agent. You’ll also need to do something like cmk-agent-ctl register. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. This was not expected as I created rules in “Agent controller” {'agent_ctl_enabled': True}. After the installation everything worked. Did not fix it. Contact an admin if you think this should be re-opened. Director of Registration and Certification at the address noted below. 0p14 Agent socket: operational IP allowlist: 10. When you have done all this, install the agent again and it will work properly. it --server 192. OS version: Rocky Linux release 9. slice (loaded active) and check_mk. The Agent Receiver tells the Agent Controller. 2. 2 system. com:443 -i cmk --user automation . The user used for registering has admin privileges at checkmk and is able to see the global setting at the webui. 7. I get a return with value: 16 The web test connection has a successfull ping but the agent. 0:8282 --site cmk --user automation --password <RANDOMPASSWORD> Attempting to. All commands to be executed on the host to be monitored. 3. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. g. 02. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. 6. sh script. 1:8655 --site cmk --user cmk_admin. But if cmk-agent-ctl cannot be started, access fails. 1. 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. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. „TLS is not activated on monitored host (see details)“. socket'. Please provide me with the output of: systemctl status check-mk-agent. cmk-update-agent register -v -H COMPUTERNAME -U register -S xxxxxxxxxxxxxxxxx. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. 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. You can learn how to use the agent here. 0. Could you please check who is claiming port 6556?. scheint mir noch nicht ganz ausgereift. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. 1. 0p25. The controller is executed under the cmk-agent user, which has limited privileges, e. 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. to switch your agent into SSL mode (and not. Contact an admin if you think this should be re-opened. 4. You can display. 0 adds the Agent Controller and new features to the agent script. TLD -i SITE-NAME -U USERNAME. 6. 5 LTS I have had no issues registering the agent on internal servers, but I have two servers hosted in the cloud which are fully connected and have appropriate NAT rules and local firewall rules to allow the communication, but registering results in the error: ERROR [cmk_agent_ctl] Operation. 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. XXX. omd su mysite. 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. Become root. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. 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. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. 2 Delete all directories/files of the agent controller from the host. slice (loaded active) and check_mk. to checkmk. We’ll come back to you to ask for. 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. 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”). CMK version: 2. NOTE: A registered host will refuse all unencrypted connections. 1 i’m trying to automate the process of registering our updated windows hosts to thee monitoring for tls encryption. 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). 0-1_all. 4. Please provide me with the output of: systemctl status check-mk-agent. If it is xinetd remove the Xinetd config file for the Checkmk agent and just reinstall the agent package. in the host run the register checkmk agent. 4:8000 --site cmk --user cmkadmin --password password. 7 LTS Attempting to register windows host with TLS upon performing corresponding command cmk-agent-ctl. 1 Like. Now the service is active and listening. The controller is executed under the cmk-agent user, which has limited privileges, e. service: Scheduled restart job, restart counter is at 2. Haven’t done anything else with the install yet. This morning all Windows Agents were suddenly no longer registered. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. Agent Victoria, British Columbia 1970's Members Murray Acton ~ Guitar, Vocals Steve Andreas ~ Bass, Vocals Peter Bryant ~ Drums, Vocals Wayne Darling ~. g. The Hostname is the familiar name that Checkmk will use for the monitoring. 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. 1. 0. C:\ProgramData\checkmk\agent\config\cas\all_certs. cmk-update-agent –v. For a user to be able to do the cmk-agent-ctl register, which is needed to enable the TLS encryption (available from 2. 02. 0p4, OS: linux, TLS is not activated on monitored host (see details) Looking in the documentation with the new agent I knew I had to register him with cmk-agent-ctl register. Agent Controller is not running, no config files can be found in the systemd directory and within xinetd. example. socket failed. CMK version: 2. Redirecting to /bin/systemctl reload xinetd. Redirecting to /bin/systemctl reload xinetd. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. Specify the correct port when calling the registration command. Version: 2. com:8000/cmk. Ikkarus13 (Sascha Kunimünch) May 30, 2022, 8:00am 1. sh script. 1. Checkmk Server: Checkmk version: 2. The agent control use the port 8000 for communication. exe" register --hostname s3mo-tape. In your case. Deutsch. 0 adds the Agent Controller and new features to the agent program. 1 does not exist. 0 onwards), you have to add the following rights (internal name “general. ” 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. 0 2. 0. 0:8282 --site cmk --user automation --password. 14 --site burana_modena --user automation -. cmk-agent-ctl delete-all --enable-insecure-connections; cmk-agent-ctl status; cmk-agent-ctl register --hostname $(hostname -f) --server checkmk21-prod. 0 then you will find the systemd unit files inside. deb Monitored System (Host): Checkmk Agent version: 2. socket failed. B. You already entered the right command with openssl s_client -connect SLAVE01:443. Open the terminal that you want to monitor on your Linux server. This might be a bug. Yes I did use the” cmk-agent-ctl register command,. via journalctl -u cmk-agent-ctl-daemon. 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. sh script. I installed the CheckMK Agent on a TrueNAS SCALE host. We strongly recommend to enable TLS by registering the host to the site (using the cmk-agent-ctl register command on the monitored host). g. 1. The port can either be included in the server name argument ( -s ), or it can be left out. 1. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. On Linux systems, the agent controller will be. 0p12. 0. Wie Sie den Agenten nutzen, erfahren Sie hier. Could you please check who is claiming port 6556? ss -tulpn | grep 6556 This should be cmk-agent-ctl in daemon mode. 5 LTS monitored system (Host) Package: check-mk-agent_2. Please provide me with the output of: systemctl status check-mk-agent. 1. In Checkmk version 2. cre default. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. This might be a bug. When trying to register the checkmk agent: Access is denied:. 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. 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 cmk-agent user is created during the installation of the agent. After the installation everything worked. 2. NOTE: A registered host will refuse all unencrypted connections. exe . . 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. 1. 1 and the site to 2. 0 Agent socket: inoperational (!!) IP allowlist: anyyour solution does not work it does not allow me to automatically register my agent after its installation Capture d'écran 2023-09-28 120008 1443×60 18 KB aeckstein (Andre Eckstein) September 29, 2023, 2:38pmCMK version: 2. 75:8000 --site robot --user cmkadmin --password password -vv. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. I am experiencing a problem with registering the agent: CMK version: 2. Please provide me with the output of: systemctl status check-mk-agent. 0 RAW OS: Windows Server 2019 Agent controller not registered After multiple clean installations specifically on this server I can’t get CheckMK to work. exe to register the Agent Controller. 0p9. 1. Are the Linux systems affected by cmk-agent-ctl not starting using a IPv4 only setup?. 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. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. Ich registriere den Agent : sudo cmk-agent-ctl register --hostname hlcmk --server 10. The controller is executed under the cmk-agent user, which has limited privileges, e. 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. We’ll come back to you to ask for. Thanks for your responses! @cyr0nk0r I rebaked the Agent using HTTP only and got rid of the. After the installation everything worked. I am trying to register an agent installed on a Windows Server 2019. Agent auf allen Monitored Hosts installiert. sh script. This is a bug of the client cmk-agent-ctl. Für Linux habe ich cmk-agent-ctl register --hostname xxx --server. If you use the bakery, the agent was baked with enabled cmk-agent-ctl. rs:14: st… As mentioned in another thread, you actually ran into a newly implemented CSR version check that’s. Specify the correct port when calling the registration command. cmk-agent-ctl register --hostname 1. 0 or earlier. If I try to register it with the command: cmk-agent-ctl register --detect-proxy --hostname FOO --server bla. 1. exe' register -s checkmk. 0p10 OS: linux The hosts agent supports TLS, but it is not being used. 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. g. no login shell, and is used only for data transfer. 0-1_all. 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. 2 Delete all directories/files of the agent controller from the host. socket (failed failed) so I stopped and disabled them, then did systemctl daemon-reload and systemctl. slice (loaded active) and check_mk. 1 Like. ColinP November 12, 2022, 12:44pm 1. Reload check_mk configuration using below command –. no login shell, and is used only for data transfer. CMK version: 2. CMK version: 2. OS version: Rocky Linux release 9. Use the cmk-agent-ctl register command to register. It seams you use a Debian system. target. I have around 60 Windows servers which I have checked using a backed agent. C:\ProgramData\checkmk\agent\config\cmk-update-agent. 2 system. In your case. Checkmk. XXX. The controller is executed under the cmk-agent user, which has limited privileges, e. OK, let’s figure out who is doing what. 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. For example, the registration crashed with "500 Internal Server Error" for users without the permission "Write access to all hosts and folders". mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. 0. register ^. 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. XXX. 0. 2 release. exe” register --site yousitename --server yourcmkserver --user automation --hostname windows_box_hostname --password 1. 1:8655 --site cmk --user cmk_admin. I created the folder manually and changed ownership, and now the registration. If it is xinetd remove the. For some reason I am no longer able to register my agents with TLS. 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. OS is Ubuntu 22. 2. 0p20 Debian 11 Hi everyone, below is the output of the “cmk-agent-ctl. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. I get this with no port, or port 800 and 8001. error: The subcommand ‘register --trust-cert’ wasn’t recognized Did you mean ‘register’? If you believe you received this message in error, try re-running with ‘cmk-agent-ctl. The hosts agent supports TLS, but it is not being used. Waren die angegebenen Werte korrekt, werden Sie aufgefordert, die Identität der Checkmk-Instanz zu bestätigen, zu der Sie die Verbindung herstellen wollen. socket), aborting``` If I als run the daemon: ```cmk-agent-ctl daemon &``` It starts responding to status command, but still won't register the node: ```root@adfb306b5d58:/# cmk-agent-ctl status Version: 2. Installing an agent and starting monitoring was straightforward - everything happens over SSH. deb Now the cmk-agent-ctl-daemon. Without register, the communication will handle also via port 8000, so you need to clarify if this port is open. It has to be a check_mk user, try with cmkadmin. net -i STAR -P 'XXXXX' -U automation -H sys-vbr02It seams you use a Debian system. After a reboot the cmk-agent-ctl-daemon and the check-mk-agent. But before we start with the actual. 2. socket --now Issue the following command to register the host with your Checkmk server. 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. In your case doing proxy. This might be a bug. Upon first try, “cmk-agent-ctl register. 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. 1 sec. 1. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. 4. Checkmk. 6 Likes. Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. DOMAIN. sh script. Server certificate details: [2022-06-01. 0. 04 Command used for registration: cmk-agent-ctl. Thanks for your responses! @cyr0nk0r I rebaked the Agent using HTTP only and got rid of the. I created the folder manually and changed ownership, and now the registration is working! Agent Controller is not running, no config files can be found in the systemd directory and within xinetd. 1. 6 Likes. rs:14: starting [2023-02-10 12:54:18. gerhards. 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. Open the terminal that you want to monitor on your. I’m running 2. If you use the bakery, the agent was baked with enabled cmk-agent-ctl. For more information try --help Command for registration. 4. 1. So, get this from “omd config show” on your CMK. You also need a --hostname flag, like --hostname test. I had to add the checkmk user again. The agent controller is well deployed and configured : “C:Program Files (x86)checkmkservicecmk-agent-ctl. ╰─$ sudo cmk-agent-ctl status Version: 2. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. Copy the cmk-update-agent binary or the cmk_update_agent. 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. 1. 0. I am trying to add new servers with: amnesiac ≫ [ 10:47:25 ] ≫ ~ $ cmk-agent-ctl register-new --server. 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. 0p6. The controller is executed under the cmk-agent user, which has limited privileges, e. 1 Like. Yes I did use the” cmk-agent-ctl register command, after that I got this message. 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. The controller is executed under the cmk-agent user, which has limited privileges, e. 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. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. 2. I created the folder manually and changed ownership, and now the registration. But if cmk-agent-ctl cannot be started, access fails. The Windows agent of Checkmk version 2. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. service systemctl disable cmk-agent-ctl-daemon.