1. If I try to register it with the command: cmk-agent-ctl register --detect-proxy --hostname FOO --server bla. The controller is executed under the cmk-agent user, which has limited privileges, e. I try with: cmk-agent-ctl register --hostname MYHOST --server CMKHOST --site MYSITE --user cmkadmin --password ‘MYPASSWORD’ Then I get the. The controller is executed under the cmk-agent user, which has limited privileges, e. 0/26. Sie können sich mit cmk-agent-ctl help die Kommandohilfe anzeigen lassen, auch spezifisch für die verfügbaren Subkommandos, z. OS version: TrueNAS SCALE 22. 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. I had to add the checkmk user. If I try to register it with the command: cmk-agent-ctl register --detect-proxy --hostname FOO --server bla. Any hints? aeckstein (Andre Eckstein) October 25, 2022, 4:36pm 4. com:8000 --site itbetrieb --user automation --password xxxxxxxx --trust-cert -vv Version: 2. cre root@9529f647cd27:/# omd sites SITE VERSION COMMENTS cmk 2. The cmk-agent user was sucessfully created. . If it is the second option you should review roles & permissions. 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. Hello. omd stop mysite. If you want to use the agent in legacy mode, you need to disable cmk-agent-ctl in bakery rules. 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. service: Scheduled restart job, restart counter is at 2. socket (failed failed) so I stopped and disabled them, then did systemctl daemon-reload and systemctl. omd su mysite. exe" status It also seems that you have multiple sites on your Checkmk server based on port 8001 in the response. 0/26. gerhards. Glaube das forum war gerade weg aber um deine Fragen zu beantworten: “C:Program Files (x86)checkmkservicecmk-agent-ctl. local --server 10. 0 (Blue Onyx) [root@CHECKMK services]# cmk-agent-ctl. 14 --site burana_modena --user automation --password XXXXXXX Registration. Something like this. Now you need to register the agnet for TLS handshake. The Windows agent of Checkmk version 2. 0, that will not be possible. I’ve installed the agent and succesfully register on OS windows 7x64 and. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. The Linux agent of Checkmk version 2. After a reboot the cmk-agent-ctl-daemon and the check-mk-agent. 0 or earlier. 0. 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. This might be a bug. I am experiencing a problem with registering the agent: CMK version: 2. to checkmk. B. Checkmk Raw Edition 2. Welcome to Checkmk. 6. OS version: Ubuntu Server. This might be a bug. 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. Checkmk Community Trouble after upgrading to 2. 1. Use the cmk-agent-ctl register command to register. (We used cmk-agent-ctl proxy-register → deploy json to host → cmk-agent-ctl import . This worked perfectly fine in CMK 2. In your case doing proxy. 1. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. I created the folder manually and changed ownership, and now the registration. deb Now the cmk-agent-ctl-daemon. 2. deb. Anschließend installieren Sie den Agenten mit allen Konfigurationsdetails für den zu überwachenden Host durch einen abschließenden Aufruf des Agent-Updater-Plugins. Become root. Thanks for your responses! @cyr0nk0r I rebaked the Agent using HTTP only and got rid of the. You can analyze this by having a look at the server’s certificate chain. In Checkmk version 2. 0 adds the Agent Controller and new features to the agent program. 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. You’ll also need to do something like cmk-agent-ctl register. Here is what I have done roughly: Added and configured the agent rules. 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. 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 cmk-agent user is created during the installation of the agent. 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. Reload check_mk configuration using below command –. Installing an agent and starting monitoring was straightforward - everything happens over SSH. 0. 2. 0p6. service. com:443 -i cmk --user automation . 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 have purged checkmk, rebooted and reinstalled the agent on the one hosts but this is not a procedure I really want to do on all my hosts because even 60 seconds of downtime will require careful planning in advance, which will turn the mass registration. 0p23 OS version: Windows Server 2019 Essentials Error message: ERROR [cmk-agent-ctl] srcmain. serviceThis is a bug of the client cmk-agent-ctl. Sehr beliebt ist z. The service is started. I am trying to register an agent installed on a Windows Server 2019. 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. 0p6. 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. 0. This one is listening at port 8000. If the host is monitored by multiple sites, you must register to all of them. Agent Updater (Agentenbäckerei), Discovery des Agent Controller Ports, mit Transportverschlüsselung. 1. 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. The Windows agent. C:\Program Files (x86)\checkmk\service>cmk-agent-ctl. Hello. 1 Like. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. 1 Like. slice (loaded active) and check_mk. g. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. exe register --hostname HOST --server SERVER: 8001 --site SITE --user USER. 1. root@kerneltalks # service xinetd reload. 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. cmk-update-agent register -v -H COMPUTERNAME -U register -S xxxxxxxxxxxxxxxxx. 0p11 Agent socket: inoperational (!!) Version: 2. gerhards. The Windows agent. Specify the correct port when calling the registration command. Thank you again Anders! My humility and I will go back into the. Distribute below files from new baked agent to all agents that were baked with expired certificate. 0p10 OS: linux The hosts agent supports TLS, but it is not being used. 02. Ultimately, Checkmk was showing the agents were not registered because they were not in fact registered. Der Linux-Agent der Checkmk-Version 2. Redirecting to /bin/systemctl reload xinetd. 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. cfg. Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. Created symlink /etc/systemd/system/sockets. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. omd update. However, the certificate rolled out by the agent updater ruleset seems to be insufficient. 0 last week. 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. server --site Main --user cmkadmin --verbose erscheint folgendes: image 1902×257 114 KB. Der für die verschlüsselte Kommunikation mit dem Checkmk-Server zuständige Agent Controller cmk-agent-ctl. You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. You already entered the right command with openssl s_client -connect SLAVE01:443. 1:8655 --site cmk --user cmk_admin. Register. raptorswithhats. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. I created the folder manually and changed ownership, and now the registration. So if you make any changes to the config file then you need to reload configuration or restart the agent. In your case doing proxy. The controller is executed under the cmk-agent user, which has limited privileges, e. To summarize: If you want to customize a Checkmk configuration and activate the changes, in Nagios you will subsequently require: OMD [mysite]:~$ cmk -R. to checkmk. 0p19 CRE OS version: Debian 11. 4 --server 1. mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. I had to add the checkmk user again. mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. exe' register -s checkmk. 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. " Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. On every host I register that way I don’t get any agent data because of the Issue Host is registe. no login shell, and is used only for data transfer. sh script. The Linux agent of Checkmk version 2. 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. I have the server up and running and ~50 VMs online, all is working well. 1 does not exist. exe register --trust-cert --hostname mein. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. It has to match the actual hostname used by the Checkmk server, found under “Setup” > “Hosts”. Could you please check who is claiming port 6556?. Hi everyone, below is the output of the “cmk-agent-ctl. /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. 0. 0. 3. CMK version: 2. This can be problematic if you are monitoring the same host from a site running Checkmk version 2. 1 Like. 04 LTS. –server checkmk. The hosts agent supports TLS, but it is not being used. I created the folder manually and changed ownership, and now the registration. Yes I did use the” cmk-agent-ctl register command, after that I got this message. Bei der Registrierung wurde in den Anleitungen von chekmk mit dem “automation” User gearbeitet, ich habe es mit dem cmkadmin gemacht was bei den. Back on server, Add server under hosts. XXX. 1. 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. But if cmk-agent-ctl cannot be started, access fails. If you want to use the agent in legacy mode, you need to disable cmk-agent-ctl in bakery rules. The controller is executed under the cmk-agent user, which has limited privileges, e. domain. Im justed deleted the automation User. 489987 +01:00] INFO [cmk_agent_ctl] srclib. slice (loaded active) and check_mk. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. 0p20 Debian 11. After the installation everything worked. : checkmk:~# systemctl status cmk-agent-ctl-daemon. exe' register -s checkmk. service. 10. root@waw1-monitor2:/omd# cmk-update-agent -v. 2 Delete all directories/files of the agent controller from the host. py page via wget when I supply the correct credentials. 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”). mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. You have three options here: Make the REST API call work. The agents' Agent Controller makes a request for registration to the server’s Agent Receiver, transmitting the data required to create the host. 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. 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. 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. 1 using the Agent Controller. This might be a bug. 0. 0 (Blue Onyx) [root@CHECKMK services]# cmk-agent-ctl. If the host is monitored by multiple sites, you must register to all of them. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. CMK 2. socket systemctl status cmk-agent-ctl-daemon. 1. example. Hello, I have a problem with enabling TLS in CheckMk 2. in the host run the register checkmk agent. 1. The registration works. serviceCan you use the option trust-cert ? Also, what is the systemd version on your system ?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. 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. 3. no login shell, and is used only for data transfer. 0. root@kerneltalks # service xinetd reload. Attempting to register at checkmk. 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…. Yes I did use the” cmk-agent-ctl register command,. latest (2. After the installation everything worked. com. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. I’m running 2. Deutsch. 1. So, Checkmk is ready. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. 0 the new Linux agent with the Agent Controller supports the registered, TLS-encrypted and compressed pull mode. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. 0p15. 1 Like. The additional port 8000 seems necessary for creating TLS connection. Reloading xinetd Activating systemd unit 'check-mk-agent. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. 1. However, there is a difference between console output of “cmk-agent-ctl status” and “cmk_agent_ctl_status” from agent output (downloaded via “Download. domain. WARNING: The Agent Controller is operating in an insecure mode! To secure the connection run cmk-agent-ctl register. CMK version: 2. In your case. WARNING: The Agent Controller is operating in an insecure mode! To secure the connection run cmk-agent-ctl register. 0. 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. 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. The Agent Receiver tells the Agent Controller. Now you need to register the agnet for TLS handshake. I’m running 2. The cmk-agent user is created during the installation of the agent. gerhards. 0 or earlier. Caused by: 0: Failed to set group id 998 corresponding to user cmk-agent 1: EPERM: Operation not permitted However, when I run the command using sudo, I end up with the following output. CMK version: 2. 4. CMK Version: 2. This is in preparation for the 2. domain. From its very beginning, monitoring Windows servers has been one of the most important tasks performed by Checkmk. I installed the CheckMK Agent on a TrueNAS SCALE host. service: Scheduled restart job, restart counter is at 2. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. Nun wird der Service „CheckMK Agent“ – Service mit Warning angezeigt und es liegt wohl daran. 4:8000 --site cmk --user cmkadmin --password password Here I still have the above issue… (and I only can use IP addresses no DNS names). service You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. Upon first try, “cmk-agent-ctl register. 0. en. mit cmk-agent-ctl help register. I am not able to debug the cmk-agent-ctl since it is in. 1. 0. All commands to be executed on the host to be monitored. If the host is monitored by multiple sites, you must. 0b4_0. Segmentation fault (core dumped) The same result also with the all needed parameters for the registration. Run communication test. 0-1_all. state. CMK version: 2. evilguy January 8, 2023, 7:53pm 3. The user used for registering has admin privileges at checkmk and is able to see the global setting at the webui. After a reboot the cmk-agent-ctl-daemon and the check-mk-agent. This topic was automatically closed 365 days after the last reply. Sehr beliebt ist z. d, only the check-mk-agent can be found: [root@jumphost]# cmk-agent-ctl register --hostname myclient . 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. 0) master 1. 1. 2. For this, however, the Agent Controller must be started as a background process (daemon) by the init system on the host on which it is to be installed. Update: Nervermind. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. This can be problematic if you are monitoring the same host from a site running Checkmk version 2. mydomain. secret with the password as String. domain. The controller is executed under the cmk-agent user, which has limited privileges, e. 1 does not exist. com--site FOO --user BAR -. {"payload":{"allShortcutsEnabled":false,"fileTree":{"agents":{"items":[{"name":"cfg_examples","path":"agents/cfg_examples","contentType":"directory"},{"name. Join thousands of sysadmins and receive free professional tips and tricks to help you monitor your IT-infrastructure. The cmk-agent user was sucessfully created. socket. 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. OK, let’s figure out who is doing what. CMK 2. For a user to be able to do the cmk-agent-ctl register, which is needed to enable the TLS encryption (available from 2. If the host is monitored by multiple sites, you must register to all of them. This option is only available in the Cloud Edition. 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 cmk-agent user is created during the installation of the agent. Deutsch. Release notes. From here click Create new host. Could you please check who is claiming port 6556?. 0p15. I had to add the checkmk user again. 1. 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. Hi, Some days ago i was testing this software, do a few tests and lately installed on a VM runing linux mint 20. After the installation everything worked. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. Bulk Consent Manager. 1. agent_pairing") to their role. 0. Welcome to the Checkmk User Guide. Ich registriere den Agent : sudo cmk-agent-ctl register --hostname hlcmk --server 10. p16 OS version: RH8,Windows Server 2019 Error message: I can’t use the cmk-agent-ctl. This morning all Windows Agents were suddenly no longer registered. The Windows agent of Checkmk version 2. exe' register -s checkmk. The port can either be included in the server name argument ( -s ), or it can be left out. In any of these cases I can replace localhost with the actual hostname as well and the results don’t change (they’re identical). Agent Registration (Pairing) for TLS Encryption. CMK 2. ColinP November 12, 2022, 12:44pm 1. systemctl stop cmk-agent-ctl-daemon. com --site FOO --user BAR --password FOO. Checkmk Server: Checkmk version: 2. 2 system. checkmk-v2-1. $ sudo cmk-agent-ctl register --hostname localhost --server checkmk. 1 i’m trying to automate the process of registering our updated windows hosts to thee monitoring for tls encryption. You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. Warning: This version breaks the agent receiver on IPv4-only Checkmk servers which have completely disabled IPv6 support on kernel level. 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. exe” register --site yousitename --server yourcmkserver --user automation --hostname windows_box_hostname --password1. OS is Ubuntu 22. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. check_mk agent runs on top of xinetd service in Linux. Afterwards, port 6556 should be claimed by. ╰─$ sudo cmk-agent-ctl status Version: 2. If you use the bakery, the agent was baked with enabled cmk-agent-ctl. serviceThe Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. cmk-update-agent register -s monitor2 -i mysite -H monitor2 -U cmkadmin. 0. consorzioburana. g. This port can be found out via omd config > Basics > AGENT_RECEIVER_PORT Of course, this port has to be exposed for the. 5. g. socket systemctl status cmk-agent-ctl-daemon. If it is xinetd remove the Xinetd config file for the Checkmk agent and just reinstall the agent package. 2. 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. Welcome to Checkmk. We’ll come back to you to ask for. 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. 1. ” failed with this error: "Request failed with code 500 Internal Server Error: Internal Server Error"Danach erfolgte die Registrierung und der Update Befehl. The hosts agent supports TLS, but it is not being used. 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. Finally, in Bake agent packages, activate. echo y|sudo cmk-agent-ctl register --hostname vmansible01 –server vmcheckmk01. WalterH (Walter Hofstädtler) May 30, 2022, 5:42pm 31. The client must set the version 0 for the CSRThe register command cmk-agent-ctl register often gets confused with the Agent update registration cmk-agent-update register, but these are two different registration types: one for TLS encryption and one for registering automatic updates (Agent Bakery, cee). 2. The registration works. You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. service should work as expected. rs:41: Loaded config from.