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. service systemctl disable cmk-agent-ctl-daemon. Checkmk Enterprise Edition 2. 0. cmk-agent-ctl delete-all --enable-insecure-connections; cmk-agent-ctl status; cmk-agent-ctl register --hostname $(hostname -f) --server checkmk21-prod. Director of Registration and Certification at the address noted below. I installed the CheckMK Agent on a TrueNAS SCALE host. This can be problematic if you are monitoring the same host from a site running Checkmk version 2. cmk-agent-ctl register --server cmkserver:443 --trust-cert --site cmksite --user username --password password --hostname monitoringhost On Debian 11 if got the following outputYes I did use the” cmk-agent-ctl register command, after that I got this message. 0. mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. The challenge is registering an agent, i. ” 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. Agent auf allen Monitored Hosts installiert. domain. 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. 0/26. 1. Reloading xinetd Activating systemd unit 'check-mk-agent. cmk-update-agent –v. 0p9. 0. evilguy January 8, 2023, 7:53pm 3. 04. 2. The server and the host are on the same network, the same virtualization cluster. OK, please also stop cmk-agent-ctl-daemon. $ sudo systemctl restart cmk-agent-ctl-daemon. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. Ich registriere den Agent : sudo cmk-agent-ctl register --hostname hlcmk --server 10. service cmk-agent-ctl-daemon. 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. Redirecting to /bin/systemctl reload xinetd. Our Manufacturers. gierse,. In the following Monitoring agents box, you specify two important options for the auto-registration. cmk-agent-ctl register --server cmkserver:443 --trust-cert --site cmksite --user username --password password --hostname monitoringhost On Debian 11 if got the following outputThe Linux agent of Checkmk version 2. I created the folder manually and changed ownership, and now the registration. To be more precise:. 4. 1 does not exist. g. There were some user permission issues with the agent registration (cmk-agent-ctl register. 1. I was using 8101 so after i set this it worked perfectly. 1 does not exist. no login shell, and is used only for data transfer. 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. 0 the new Linux agent with the Agent Controller supports the registered, TLS-encrypted and compressed pull mode. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. This port can be found out via omd config > Basics > AGENT_RECEIVER_PORT Of course, this port has to be exposed for the. Yes I did use the” cmk-agent-ctl register command, after that I got this message. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. 0p6. 0) master 1. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. 1 does not exist. 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. Here is a fix that worked for me, in case anyone else runs into this. $ sudo cmk-agent-ctl register --hostname localhost --server checkmk. g. Tahnks a lot for your tip. The exact command line is this: cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. (We used cmk-agent-ctl proxy-register → deploy json to host → cmk-agent-ctl import . Record Keeping Keep a copy of your application and all submitted documents for your records. New replies are no longer allowed. slice (loaded active) and check_mk. de --site monitoring --user cmkadmin. 1. i’am new to checkmk and trying to configure the agent but getting the same message, i couldn’t understand why. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. CMK version: 2. 2 system. XXX. During registration, the agent controller (cmk-agent-ctl) queries the port on which the agent receiver is listening from the Checkmk REST API, unless the port has been explicitly provided on the command line. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. Bei der Registrierung der Agents ergibt sich bei beiden Server folgender Fehler: <HOST>:~ # cmk-agent-ctl register --hostname <HOSTNAME> --server 192. If it is not that, double-check your TLS registration process per our official guide: Monitoring Linux - The new agent for Linux in detail. Now the service is active and listening. Checkmk Enterprise Edition 2. sh script. 4. 0. 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. mit cmk-agent-ctl help. 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. 1 Like. You already entered the right command with openssl s_client -connect SLAVE01:443. sh script. Tested adding both a firewall run on the 2019 server for both 6556 in and out. gerhards. g. 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. en. 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. If you want to use the agent in legacy mode, you need to disable cmk-agent-ctl in bakery rules. cee Ubuntu 16. exe" status It also seems that you have multiple sites on your Checkmk server based on port 8001 in the response. –user automation --password “xxx”. py script to the host to be monitored (both can be found at ~/share/check_mk/agents/plugins on the Checkmk server). CMK Checkmk Enterprise Edition 2. 0 adds the Agent Controller and new features to the agent program. I am not able to debug the cmk-agent-ctl since it is in binary form: You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. It’s hard to tell where exactly it comes from. Please provide me with the output of: systemctl status check-mk-agent. com:443 -i cmk --user automation . Hi everybody, i’am new to checkmk and trying to configure the agent but getting the same message, i couldn’t understand why. Für Linux habe ich cmk-agent-ctl register --hostname xxx --server. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. 0p15. So if you make any changes to the config file then you need to reload configuration or restart the agent. 0. serviceThe Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. 1. The exact command line is this: cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. I am trying to register an agent installed on a Windows Server 2019. pem. I have around 60 Windows servers which I have checked using a backed agent. It has to match the actual hostname used by the Checkmk server, found under “Setup” > “Hosts”. service systemctl stop check-mk-agent. 1. All commands to be executed on the host to be monitored. Nun hast Du 2 Möglichkeiten: Entweder den controller für TLS registrieren (cmk-agent-ctl register -h für die Hilfe) oderCheckmk Enterprise Edition 2. 2. 1. socket --now Issue the following command to register the host with your Checkmk server. After the installation everything worked. CMK 2. Agent pairing; Read access to all hosts and folders; Write access to all hosts and folders; regards. 4. 7 I have problem since the connection to the cmk server has to be ssl encrypted. " Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. serviceThe REST in the name of the REST API stands for REpresentational State Transfer, and it describes an architecture for the exchange of data on distributed systems — especially for web. 04. service. OS version: Ubuntu Server 22. 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). exe" ^ register ^ --hostname mynewhost ^ -. 0-1_all. cfg file, the registration information of the agent controller stays behind on uninstallation. TLD -i SITE-NAME -U USERNAME This worked perfectly fine in CMK 2. The Windows agent of Checkmk version 2. Jun 17 10:57:15 nc systemd[1]: Stopped Checkmk agent controller daemon. 1. 0 adds the Agent Controller and new features to the agent program. 2. ago. The controller is executed under the cmk-agent user, which has limited privileges, e. 0p22 agent by running cmk-agent-ctl on the 2. 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. 2 system. cmk-update-agent –v. cmk-agent-ctl. 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. com. 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 (MD) December 17, 2021, 4:52am 3. Monitoring Linux - The new agent for Linux in detail. DOMAIN. en. gerhards. Here you can enter a host’s name simply in order to view the host’s configuration (e. 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. The registration is done using the Agent Controller cmk-agent-ctl, which provides a command interface for configuring the connections. Please provide me with the output of: systemctl status check-mk-agent. –hostname WindowsServer ^. Waren die angegebenen Werte korrekt, werden Sie aufgefordert, die Identität der Checkmk-Instanz zu bestätigen, zu der Sie die Verbindung herstellen wollen. 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. „TLS is not activated on monitored host (see details)“. This might be a bug. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. 1 does not exist. 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. 1. The Agent Receiver tells the Agent Controller. You also need a --hostname flag, like --hostname test. In checkmk for the host service got below warning. Please execute with sufficient permissions (maybe try 'sudo'). If the host is monitored by multiple sites, you must register to. I am trying to register an agent installed on a Windows Server 2019. Anyhow when registering the usual way as I did it. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. exe' register -s checkmk. 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. 4. 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. I have the server up and running and ~50 VMs online, all is working well. If the host is monitored by multiple sites, you must register to all of them. Registration indeed is good. 0 2. root@kerneltalks # service xinetd reload. 0 then you will find the systemd unit files. exe' register -s checkmk. Please provide me with the output of: systemctl status check-mk-agent. But if cmk-agent-ctl cannot be started, access fails. ” failed with this error: "Request failed with code 500 Internal Server Error: Internal Server Error"The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. ourcompany. it --server 192. 0 onwards), you have to add the following rights (internal name "general. 234. DOMAIN. 1. You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. 1. service: Scheduled restart job, restart counter is at 2. Now you need to register the agnet for TLS handshake. user -vv INFO [cmk_agent_ctl] starting. 1 server? You have to run the cmk-agent-ctl on the machine running the agent, not from the server. Deutsch. The port can either be included in the server name argument ( -s ), or it can be left out. 1. This might be a bug. Danach erfolgte die Registrierung und der Update Befehl. I’m running 2. 0p12. You can learn how to use the agent here. The cmk-agent user is created during the installation of the agent. For example, the registration crashed with "500 Internal Server Error" for users without the permission "Write access to all hosts and folders". DOMAIN. domain. Im talking about the network proxy admin and/ o the admin of the client. service should work as expected. rs:41: Loaded config from. Ob der Host dabei für den Pull-Modus (alle Editionen) oder den Push-Modus (nur Cloud Edition) konfiguriert ist, macht für die Befehlsbeispiele keinen Unterschied. The cmk-agent user is created during the installation of the agent. CMK version: 2. Password: explicit. Here is the deep link to the section in the manual:. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. 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. 0. 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. exe' register -s checkmk. Version: 2. B. Sie können sich mit cmk-agent-ctl help die Kommandohilfe anzeigen lassen, auch spezifisch für die verfügbaren Subkommandos, z. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. 2. service: Scheduled restart job, restart counter is at 2. For more information try --help Command for registration. wants/check-mk-agent. xyz:9800 --site cmk --user BAR --password FOO. 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. Specify the correct port when calling the registration command. 4. state. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. socket systemctl status cmk-agent-ctl-daemon. 0. cmk-agent-ctl register --hostname app-a. This might be a bug. This might be a bug. 57. 1. Unfortunately, the problem remains: C:WINDOWSsystem32>"C:Program Files (x86)checkmkservicecmk-agent-ctl. d/ there might be a residual configuration file called checkmk or similar. no login shell, and is used only for data transfer. The docker run command from the documentation is using -p 8000:8000 to bind that port externally. On Linux systems, the agent controller will be. The Agent Receiver tells the Agent Controller. For this, I’m running following command on client # cmk-agent-ctl register --hostname `hostname -f` --server mon. 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. 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). cmk-agent-ctl register -H ovhxxx -s publicIP:8194 -i cmk -U automation. 1 Like. consorzioburana. 0. This can be problematic if you are monitoring the same host from a site running Checkmk 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. 1. Ikkarus13 (Sascha Kunimünch) May 30, 2022, 8:00am 1. Segmentation fault (core dumped) The same result also with the all needed parameters for the registration. 04 LTS. Bei einem Netzwerkdienst liegt es nahe, den Dienst über das Netzwerk abzufragen und über diesen Weg auch zu überwachen. Dear friends of Checkmk, the new stable release 2. TLD -i SITE-NAME -U USERNAME This worked perfectly fine in CMK 2. You’ll also need to do something like cmk-agent-ctl register. 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. keine Login-Shell hat und nur zur Datenübertragung genutzt wird. 0 last week. OS: Windows Server 2019. service should work as expected. DOH I forgot I had set a custom port for agent receiver as i had a conflict for 8000 on my docker host. 5. Since the machine you’re trying to monitor is still 2. This port can be found out via omd config > Basics > AGENT_RECEIVER_PORT Of course, this port has to be exposed for the registration to. WARNING: The Agent Controller is operating in an insecure mode! To secure the connection run cmk-agent-ctl register. CMK version: 2. The hosts agent supports TLS, but it is not being used. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. 3. mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. 10. mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. 0p10 OS: linux The hosts agent supports TLS, but it is not being used. How to Contact. Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. From here click Create new host. exe" register --hostname s3mo-tape. andreas-doehler (Andreas) January 8, 2023, 3:48pm 2. If you want to use the agent in legacy mode, you need to disable cmk-agent-ctl in bakery rules. 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. 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. Nun wird der Service „CheckMK Agent“ – Service mit Warning angezeigt und es liegt wohl daran. Bei der Registrierung der Agents ergibt sich bei beiden Server folgender Fehler: <HOST>:~ # cmk-agent-ctl register --hostname <HOSTNAME> --server 192. 0. Sie können sich mit cmk-agent-ctl help die Kommandohilfe anzeigen lassen, auch spezifisch für die verfügbaren Subkommandos, z. This query is attempted both with and both queries fail, the controller aborts, otherwise, the result of the first sucessful query is. –server checkmk. c:2633). Hi, Some days ago i was testing this software, do a few tests and lately installed on a VM runing linux mint 20. cmk -N myserver123 ). 1. Die Registrierung erfolgt mit dem Agent Controller cmk-agent-ctl, der für die Konfiguration der Verbindungen eine Kommandoschnittstelle bietet. 2 system. 0. rs:41: Loaded config from. The cmk-agent user is created during the installation of the agent. 0. OK, let’s figure out who is doing what. rs:41: Loaded config from. deb. 0:8282 --site cmk --user automation --password <RANDOMPASSWORD> Attempting to. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. check_mk agent runs on top of xinetd service in Linux. 1 server? You have to run the cmk-agent-ctl on the machine running the agent, not from the server. 04 - CMK RAW) where communication with the agent keeps giving errors "[agent] Communication failed: [Errno 104] Connection reset by peer - Got no information from host - execution time 0. 1 Like. 02. Sehr beliebt ist z. 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. 1 Like. 6. The cmk-agent user was sucessfully created. $ cmk-update-agent register $ cmk-agent-ctl register. If it is xinetd remove the. 0. but this just ended in automation2 searching for automation accounts secrets, removed automation2. I had to add the checkmk user. deb Now the cmk-agent-ctl-daemon. XXX. 1:8655 --site cmk --user cmk_admin. I get a return with value: 16 The web test connection has a successfull ping but the agent. I had to add the checkmk user again. Die Registrierung der Agents in der Version 2. 1. socket failed. The systemd is version 246. Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. ╰─$ sudo cmk-agent-ctl status Version: 2. The cmk-agent user is created during the installation of the agent. For more information try --helpcmk-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. OS version: TrueNAS SCALE 22.