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. 2 system. exe to register the Agent Controller. 4. Checkmk Community Trouble after upgrading to 2. This is a bug of the client cmk-agent-ctl. 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. service1. en. Das zu bestätigende Server-Zertifikat haben wir aus Gründen der. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. 4. After the installation everything worked. The new TLS feature is need to register with cmk-agent-ctl register command. 1But if cmk-agent-ctl cannot be started, access fails. 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. 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. If the host is monitored by multiple sites, you must register to all of them. 4. The agent controller is well deployed and configured : “C:Program Files (x86)checkmkservicecmk-agent-ctl. 0. You might apt-get remove the old Checkmk package when no site is using it any more. register ^. 1. To register a host, users need the following permissions: Agent pairing. 0. Checkmk Server: Checkmk version: 2. c:2633). 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. ” 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. com:443 --site howtoforge --user cmkadmin So before you take care of the configuration itself, enable the Activation of automatic agent updates option under Setup > General > Global Settings > Automatic Agent Updates: To implement the updates, follow these steps: First open Setup > Agents > Windows, Linux, Solaris, AIX and select Agents > Automatic updates: See Prerequisites for a list. d/ there might be a residual configuration file called checkmk or similar. monitoring. 0. 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. 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. Please provide me with the output of: systemctl status check-mk-agent. Registration indeed is good. Installing an agent and starting monitoring was straightforward - everything happens over SSH. TLD -i SITE-NAME -U USERNAME This worked perfectly fine in CMK 2. service: Scheduled restart job, restart counter is at 2. 0. 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. The registration then aborts, since we cannot continue without knowing the correct port. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. The port can be different in your case. 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. 0p15. 1. 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. 0p10 OS: linux The hosts agent supports TLS, but it is not being used. Just to. (We used cmk-agent-ctl proxy-register → deploy json to host → cmk-agent-ctl import . After the installation everything worked. d, only the check-mk-agent can be found: [root@jumphost]# cmk-agent-ctl register --hostname myclient \. You also need a --hostname flag, like --hostname test. I had to add the checkmk user again. domain. This topic was automatically closed 365 days after the last reply. /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. I created the folder manually and changed ownership, and now the registration. deb. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. B. service should work as expected. The Agent Receiver tells the Agent Controller. The cmk-agent user is created during the installation of the agent. It seams you use a Debian system. Hi, Some days ago i was testing this software, do a few tests and lately installed on a VM runing linux mint 20. 0 adds the Agent Controller and new features to the agent script. rs:14: starting [2023-02-10 12:54:18. After the installation everything worked. Bulk Consent Manager. 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. „TLS is not activated on monitored host (see details)“. You can learn how to use the agent here. I had to add the checkmk user. slice (loaded active) and check_mk. Einen auf den Server auf der Docker Service läuft (OpenSuse Tumbleweed), sowie einen Windows Server 2016. OS version: Ubuntu Server 22. net -i STAR -P 'XXXXX' -U automation -H sys-vbr02The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. 0p17. 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. state. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. sh script. com --site FOO --user BAR --password FOO. Checkmk. slice (loaded active) and check_mk. If there are leftovers from 2. 1. Registration indeed is good. 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…. If you forward port 9800 to 8000 then you also have to use port 9800 in your register command. cmk-agent-ctl register --hostname localhost --server server:8000 --site mysite --user cmkadmin -vv. service systemctl disable cmk-agent-ctl-daemon. mydomain. g. I get this with no port, or port 800 and 8001. This worked perfectly fine in CMK 2. 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. After a reboot the cmk-agent-ctl-daemon and the check-mk-agent. when i executing the command remotely via powershell i’m. to switch your agent into SSL mode (and not. New install of CMK (via RPM) - trying to just register the localhost agent. 1. cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. mictlancihuatll. The windows installer supports the following command line arguments: /S - runs the installer silently /D= - sets the default installation directory. So, get this from “omd config show” on your CMK. Die Seite habe ich auch schon gefunden aber wie gesagt so richtig verstanden bzw. cmk-agent-ctl delete-all --enable-insecure-connections; cmk-agent-ctl status; cmk-agent-ctl register --hostname $(hostname -f) --server checkmk21-prod. 0. WARNING: The Agent Controller is operating in an insecure mode! To secure the connection run cmk-agent-ctl register. socket systemctl status cmk-agent-ctl-daemon. 0 OS Version: Appliance 1. socket systemctl disable cmk-agent-ctl-daemon. Warning: This version breaks the agent receiver on IPv4-only Checkmk servers which have completely disabled IPv6 support on kernel level. 0. Run communication test. Hi everyone, below is the output of the “cmk-agent-ctl. socket failed. Version: 2. Troubleshooting. gerhards. 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. 1 Like. Er wird unter dem Benutzer cmk-agent ausgeführt, der nur beschränkte Rechte besitzt, z. The cmk-agent user was sucessfully created. OS version: TrueNAS SCALE 22. 1. Specify the correct port when calling the registration command. Here is a fix that worked for me, in case anyone else runs into this. DOMAIN. The exact command line is this: cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. The registration is done using the Agent Controller cmk-agent-ctl, which provides a command interface for configuring the connections. service: Scheduled restart job, restart counter is at 2. Create MSI file for windows 2019 server. 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. 0p11 Agent socket: inoperational (!!) Version: 2. Password: explicit. 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. Welcome to Checkmk. We will be asked for some information about the host. 0. service You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. 5. If you want to use the agent in legacy mode, you need to disable cmk-agent-ctl in bakery rules. 0p15 OS version: TrueNAS SCALE 22. socket --now Issue the following command to register the host with your Checkmk server. g. The Windows agent. Basically i installed checkmk site into Docker then i installed the agent into the desired server, but when i run the command: sudo cmk-agent-ctl register -vv --hostname name --server ip:8000 --site cmk --user user --password pass. Our Manufacturers. Thanks for having a look. Hosts and CheckMK use a current Debian Bullseye and I use CheckMK Server and Client 2. this is initiated by the cloud host contacting CMK server behind our office. The cmk-agent user was sucessfully created. But nothing worked. The port can either be included in the server name argument ( -s ), or it can be left out. sh script. CMK 2. 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. service. check_mk agent runs on top of xinetd service in Linux. Anders (Anders) November 27, 2022, 4:25pm 1 CMK version: 2. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. Install the suitable Checkmk agent on the server you want to monitor and add the server as a host in Checkmk. Der Linux-Agent der Checkmk-Version 2. The agents' Agent Controller makes a request for registration to the server’s Agent Receiver, transmitting the data required to create the host. The hosts agent supports TLS, but it is not being used. CMK Version: 2. Here is what I have done roughly: Added and configured the agent rules. target. 0 ergänzt das Agentenskript mit dem Agent Controller und neuen Funktionen. {"payload":{"allShortcutsEnabled":false,"fileTree":{"agents":{"items":[{"name":"cfg_examples","path":"agents/cfg_examples","contentType":"directory"},{"name. 1 server? You have to run the cmk-agent-ctl on the machine running the agent, not from the server. 57. ” failed with this error: "Request failed with code 500 Internal Server Error: Internal Server Error"Danach erfolgte die Registrierung und der Update Befehl. Back on server, Add server under hosts. In your case. The cmk-agent user is created during the installation of the agent. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. Could you please check who is claiming port 6556?. Hi everyone, below is the output of the “cmk-agent-ctl. e. My server proxmox follow the guide from checkmk, where create the user, policy, open port 6556, special agent. socket (failed failed) so I stopped and disabled them, then did systemctl daemon-reload and systemctl. 0 adds the Agent Controller and new features to the agent program. 0-1_all. Here is the deep link to the section in the manual:. 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. If you want to use the agent in legacy mode, you need to disable cmk-agent-ctl in bakery rules. 57. The registration works. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. I am trying to register an agent installed on a Windows Server 2019. Thank you very much to assist me on this way! system (system) Closed September 26, 2023, 4:01pm 9. The port can either be included in the server name argument ( -s ), or it can be left out. Yes, it might seem weird. I’m running 2. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. 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. Reload check_mk configuration using below command –. But when the distributed server wants to query the remote agent: [agent] Communication failed: [SSL: SSLV3_ALERT_HANDSHAKE_FAILURE] sslv3 alert handshake failure (_ssl. XXX. exe” register. Upon first try, “cmk-agent-ctl register. The cmk-agent user was sucessfully created. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. This one is listening at port 8000. 40. 02. Distribute below files from new baked agent to all agents that were baked with expired certificate. 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. When I try to register the agent on the host system with: cmk-agent-ctl register --hostname some_hostname --server 127. You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. 6 Likes. exe" register --hostname s3mo-tape. com:443 -i cmk --user automation . mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. The agent control use the port 8000 for communication. exe register --trust-cert --hostname mein. C:ProgramDatacheckmkagentconfigcasall_certs. 2. g. 1. ColinP November 12, 2022, 12:44pm 1. Welcome to the Checkmk User Guide. WalterH (Walter Hofstädtler) May 30, 2022, 5:42pm 31. This is the command we used to register the agent: C:Windowssystem32> "C:Program Files (x86)checkmkservicecmk-agent-ctl. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. 0 or earlier. After the installation everything worked. The Windows agent of Checkmk version 2. CMK version: 2. gerhards. You’ll also need to do something like cmk-agent-ctl register. 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). 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. 0 2. 1 server? You have to run the cmk-agent-ctl on the machine running the agent, not from the server. If it is xinetd remove the Xinetd config file for the Checkmk agent and just reinstall the agent package. 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. I am trying to register an agent installed on a Windows Server 2019. It’s hard to tell where exactly it comes from. 0. I am trying to register an agent installed on a Windows Server 2019. The exact command line is this: cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. Die entsprechenden Optionen können Sie sich beim Aufruf von cmk-update-agent register --help anzeigen lassen. We’ll come back to you to ask for. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. 1. cmk-update-agent register -v -H COMPUTERNAME -U register -S xxxxxxxxxxxxxxxxx. to checkmk. Agent pairing; Read access to all hosts and folders; Write access to all hosts and folders; regards. socket systemctl status cmk-agent-ctl-daemon. Is there a switch to automatically confirm the registration prompt during the agent registration prompt for scripted (Ansible) provisioning? I’m currently doing this via a clunky method of echo y| (agentctl command)echo y|sudo cmk-agent-ctl register --hostname vmansible01 –server vmcheckmk01. 1. I am trying to register an agent installed on a Windows Server 2019. rs:14: starting [2023-02-10 12:54:18. The cmk-agent user is created during the installation of the agent. example. serviceThe Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. The cmk-agent user is created during the installation of the agent. The service is started. Sie können sich mit. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. It has to match the actual hostname used by the Checkmk server, found under “Setup” > “Hosts”. Ultimately, Checkmk was showing the agents were not registered because they were not in fact registered. 02. redacted. This might be a bug. 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). I am experiencing a problem with registering the agent: CMK version: 2. Welcome to the Checkmk User Guide. The agent control use the port 8000 for communication. Now you need to register the agnet for TLS handshake. Only after I manually ran “cmk-agent-ctl register” it listened again. You can confirm this by telnetting from your OMD site to the monitored server on tcp port 6556:Checkmk Enterprise Edition 2. 1. Ausgabe ist: Local: Hier scheint alles ok zu seine, nur taucht der Host im. 0p14 Agent socket: operational IP allowlist: 10. socket'. But if cmk-agent-ctl cannot be started, access fails. 4. 0, that will not be possible. 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. 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. Please provide me with the output of: systemctl status check-mk-agent. CMK version: 2. 5. 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. If it is xinetd remove the. B. 5. 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). 6 Likes. After the installation everything worked. rs:41: Loaded config from. 2. 0. I am not able to debug the cmk-agent-ctl since it is in. TLD -i SITE-NAME -U USERNAME. socket failed. 0) master 1. 1. Checkmk. [[email protected] It seems that the host you are trying to register is already registered at the Checkmk site. 0p6. But the agent controller now periodically reads its config to check whether it is in pull or push mode – so it might take up to three minutes until SSL works after a registration. 1. NOTE: A registered host will refuse all unencrypted connections. 0p6. The user used for registering has admin privileges at checkmk and is able to see the global setting at the webui. New replies are no longer allowed. 168. But if cmk-agent-ctl cannot be started, access fails. deb Now the cmk-agent-ctl-daemon. If the host is monitored by multiple sites, you must register to all of them. XXX. 0b4_0 raw OS: Ubuntu 20. You can display. 0-1_all. But if cmk-agent-ctl cannot be started, access fails. In your case doing proxy. 0. exe register --hostname HOST --server SERVER: 8001 --site SITE --user USER. 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. 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. 1. 489987 +01:00] INFO [cmk_agent_ctl] srclib. I installed the CheckMK Agent on a TrueNAS SCALE host. Created symlink /etc/systemd/system/sockets. exe register --hostname HOST --server SERVER: 8001 --site SITE --user USER. 1. I created the folder manually and changed ownership, and now the registration. Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. DOMAIN. I’m running 2. Please provide me with the output of:. Thanks for your responses! @cyr0nk0r I rebaked the Agent using HTTP only and got rid of the. Upon first try, “cmk-agent-ctl register. net -i STAR -P 'XXXXX' -U automation -H sys-vbr02It seams you use a Debian system. 1. 0 2. 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. Hello. 1 Like. mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. i’am new to checkmk and trying to configure the agent but getting the same message, i couldn’t understand why. I had to add the checkmk user again. The Windows agent. 0. Das wurde erst mit b3 geändert, gilt aber nur für die erste Installation. com:8000 --site itbetrieb --user automation --password xxxxxxxx --trust-cert -vv Version: 2. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. server --server mein. 1 gave 404 Not Found: Host 127. MichaelI’m running 2. com--site FOO --user BAR -. no login shell, and is used only for data transfer. serviceThis is a bug of the client cmk-agent-ctl. There were some user permission issues with the agent registration (cmk-agent-ctl register. 1. 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 should work as expected. XXX. CMK 2. I installed the CheckMK Agent on a TrueNAS SCALE host. ourcompany. 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. g. 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. There were some user permission issues with the agent registration (cmk-agent-ctl register. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. The port can either be included in the server name argument ( -s ), or it can be left out. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. service should work as expected. But if cmk-agent-ctl cannot be started, access fails. 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. This morning all Windows Agents were suddenly no longer registered.