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. 2 system. CMK version: 2. Address: 401 Hartwig Court, 1208 Wharf Street, Victoria, BC, V8W 2P5, CanadaCTP Distributors. 0p22 agent by running cmk-agent-ctl on the 2. Im justed deleted the automation User. The registration is done using the Agent Controller cmk-agent-ctl, which provides a command interface for configuring the connections. In Checkmk version 2. 0p12. The cmk-agent user was sucessfully created. For more information try --help Command for registration. Here is what I have done roughly: Added and configured the agent rules. Bei einem Netzwerkdienst liegt es nahe, den Dienst über das Netzwerk abzufragen und über diesen Weg auch zu überwachen. The exact command line is this: cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. However, there is a difference between console output of “cmk-agent-ctl status” and “cmk_agent_ctl_status” from agent output (downloaded via “Download. CMK 2. exe' register -s checkmk. I have the server up and running and ~50 VMs online, all is working well. service should work as expected. 1. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. Thanks for your responses! @cyr0nk0r I rebaked the Agent using HTTP only and got rid of the. keine Login-Shell hat und nur zur Datenübertragung genutzt wird. The registration against the corresponding slaves works fine and I can see with cmk-agent-ctl status, that the host is registered and in pull-mode now: image 843×285 37. 1. Now you need to register the agnet for TLS handshake. exe register --hostname SRV001 --server <CHECK_MK_IP> --site mysite --user automation --password <PASSWORD>check_mk agent runs on top of xinetd service in Linux. 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. The Agent Receiver tells the Agent Controller. 5. com --site FOO --user BAR --password FOO. redacted. domain. - it goes from CRIT → OK after a while or sometimes message comes with with service. service should work as expected. socket failed. 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. Glaube das forum war gerade weg aber um deine Fragen zu beantworten: “C:Program Files (x86)checkmkservicecmk-agent-ctl. MichaelI’m running 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. 0 ergänzt das Agentenskript mit dem Agent Controller und neuen Funktionen. 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. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. 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. This topic was automatically closed 365 days after the last reply. If it is xinetd remove the. 0p11 on Debian 11. Back on server, Add server under hosts. If I try to register it with the command: cmk-agent-ctl register --detect-proxy --hostname FOO --server bla. , I had to put the public hostname). Run communication test. 0 adds the Agent Controller and new features to the agent script. 1. server --server mein. 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. net -i STAR -P 'XXXXX' -U automation -H sys-vbr02The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. 2. You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. consorzioburana. OS version: Rocky Linux release 9. 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). 1. If the server you want to monitor and register is the monitoring docker. com:8000 --site itbetrieb --user automation --password xxxxxxxx --trust-cert -vv Version: 2. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. Anders (Anders) November 27, 2022, 4:25pm 1 CMK version: 2. @SeyRyuu I have potential good news for you, then… I resolved this yesterday . 0. 2. 3. 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. socket (failed failed) so I stopped and disabled them, then did systemctl daemon-reload and systemctl. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. 234. Checkmk. Baked and signed the agent. I am trying to register an agent installed on a Windows Server 2019. slice (loaded active) and check_mk. 2. If the Agent Receiver accepts the request,. You might apt-get remove the old Checkmk package when no site is using it any more. 1 does not exist. OK, please also stop cmk-agent-ctl-daemon. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. Welcome to the Checkmk User Guide. ColinP November 12, 2022, 12:44pm 1. sh script. service systemctl disable cmk-agent-ctl-daemon. The controller is executed under the cmk-agent user, which has limited privileges, e. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. socket failed. You can learn how to use the agent here. exe' register -s checkmk. 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. gerhards. Nun wird der Service „CheckMK Agent“ – Service mit Warning angezeigt und es liegt wohl daran. Contact an admin if you think this should be re-opened. In checkmk for the host service got below warning. In case it is left out, the agent controller tries to query the port from the REST API. 1. 1 and the site to 2. 1 i’m trying to automate the process of registering our updated windows hosts to thee monitoring for tls encryption. Hello David, unfortunately --trust-cert changes nothing. This is in preparation for the 2. After reading the warning message The agent controller is operating in an insecure mode I started to read the docs on what should be done. 0p15 OS version: TrueNAS SCALE 22. The new TLS feature is need to register with cmk-agent-ctl register command. deb. g. Warning: This version breaks the agent receiver on IPv4-only Checkmk servers which have completely disabled IPv6 support on kernel level. exe register --hostname xxx --server checkmk:8000 --site monitoring --user automation --password xxx That seemed to have worked great thanks “jwiederh”. You’ll also need to do something like cmk-agent-ctl register. Welcome to the Checkmk User Guide. . 1. Here is a fix that worked for me, in case anyone else runs into this. Install the suitable Checkmk agent on the server you want to monitor and add the server as a host in Checkmk. 0 then you will find the systemd unit files inside. Checkmk. Hosts and CheckMK use a current Debian Bullseye and I use CheckMK Server and Client 2. Update: Nervermind. example. The Windows agent of Checkmk version 2. 1. C:Program Files (x86)checkmkservice>cmk-agent-ctl. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. Bei der Registrierung der Agents ergibt sich bei beiden Server folgender Fehler: <HOST>:~ # cmk-agent-ctl register --hostname <HOSTNAME> --server 192. Become a Dealer. 168. 0. Monthly Promotions Product Specials and Monthly Flyers Emailed Right to You! Online Ordering Check Price and. I’m facing the same issue (and also running checkmk raw in a Docker container) on a X86_64 Debian Bullseye host. folgenden Register Befehl benutzt. 0 onwards), you have to add the following rights (internal name "general. In case it is left out, the agent controller tries to query the port from the REST API. this is initiated by the cloud host contacting CMK server behind our office. 1. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. I had to add the checkmk user again. omd start. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. Ok, so the user I’m using to do the agent registration. Das zu bestätigende Server-Zertifikat haben wir aus Gründen der. cmk-agent-ctl register --hostname 1. CMK Version: CRE 2. root@kerneltalks # service xinetd reload. 1. , I had to put the public hostname). After a reboot the cmk-agent-ctl-daemon and the check-mk-agent. 1. local -i home -U cmkadmin ERROR [cmk_agent_ctl] Failed to discover agent receiver port from Checkmk REST API, both. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. cmk-agent-ctl register --hostname app-a. 2 system. The exact command line is this: cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. gerhards. 1. Hello. in the host run the register checkmk agent. 7. Agent auf allen Monitored Hosts installiert. I created the folder manually and changed ownership, and now the registration. The cmk-agent user is created during the installation of the agent. cmk-agent-ctl register --hostname localhost --server server:8000 --site mysite --user cmkadmin -vv. target. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. 4:8000 --site cmk --user cmkadmin --password password. I created the folder manually and changed ownership, and now the registration. 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. 5. 0. The controller is executed under the cmk-agent user, which has limited privileges, e. com--site FOO --user BAR --password FOO The new agents at 2. Die Registrierung klappt einfach nicht (die Hosts sind aber auch schon aus der 2. Ikkarus13 (Sascha Kunimünch) May 30, 2022, 8:00am 1. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. 0. 1 server? You have to run the cmk-agent-ctl on the machine running the agent, not from the server. exe' register -s checkmk. Für Linux habe ich cmk-agent-ctl register --hostname xxx --server. Here is a fix that worked for me, in case anyone else runs into this. copy the cmk-agent-ctl for the architecture you are using to e. This port can be found out via omd config > Basics > AGENT_RECEIVER_PORT Of course, this port has to be exposed for the. This is realized by a new component on the monitored hosts: The Checkmk agent controller cmk-agent-ctl. 0p20 Debian 11. ” 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. 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). sh script. 02. rs:14: starting [2023-02-10 12:54:18. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. 0 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. 0p12 Agent socket: operational IP allowlist: any Connection: xxxxx UUID: xxxxxx Local: Connection type: pull-agent Certificate issuer: Site 'xxx' local CA Certificate validity: Wed, 05 Oct 2022 12:04:40 +0000 - Mon, 05 Feb 3021 12:04:40 +0000 Remote: Connection type: pull-agent. Use the cmk-agent-ctl register command to register. 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. This morning all Windows Agents were suddenly no longer registered. exe' register -s checkmk. 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. Added new host in CMK. domain. OS version: TrueNAS SCALE 22. 1. echo y|sudo cmk-agent-ctl register --hostname vmansible01 –server vmcheckmk01. cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. socket failed. The port can be different in your case. I am trying to register an agent installed on a Windows Server 2019. I installed the CheckMK Agent on a TrueNAS SCALE host. CMK version: 2. cmk-agent-ctl register --hostname myhost --server checkmk. 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. 0p20 Ubuntu 20. system (system) Closed October 17, 2023, 5:42am. 0 Zeiten registriert) Registrierung über den Servernamen “checkmk” meines CheckMK Servers und der Instanz “lexx”. mydomain. 0b4_0 raw OS: Ubuntu 20. WARNING: The Agent Controller is operating in an insecure mode! To secure the connection run cmk-agent-ctl register. For a user to be able to do the cmk-agent-ctl register, which is needed to enable the TLS encryption (available from 2. 1. 2. I think the docs aren’t clear on what should be done if ss -tulpn | grep 6556 shows that systemd or xinetd are listening on 6556 instead of cmk-agent-ctl, and what one should do to have cmk-agent-ctl working. Are you trying to register the 2. 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. This might be a bug. 1. I am not able to debug the cmk-agent-ctl since it is in. 0/26. de --site monitoring --user cmkadmin. 2. I accept the certificate. 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. New replies are no longer allowed. 1. In any of these cases I can replace localhost with the actual hostname as well and the results don’t change (they’re identical). Das funktioniert. 0p9. 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. First, to add a new host to monitor we have to go to the Hosts menu in the WATO - Configuration menu on the left. Hi everyone, below is the output of the “cmk-agent-ctl. py script to the host to be monitored (both can be found at ~/share/check_mk/agents/plugins on the Checkmk server). 1. Copy the cmk-update-agent binary or the cmk_update_agent. cmk-agent-ctl delete-all --enable-insecure-connections; cmk-agent-ctl status; cmk-agent-ctl register --hostname $(hostname -f) --server checkmk21-prod. This is the command we used to register the agent: C:Windowssystem32> "C:Program Files (x86)checkmkservicecmk-agent-ctl. 4. Haven’t done anything else with the install yet. ColinP November 12, 2022, 12:44pm 1. 4. I had to add the checkmk user again. Die entsprechenden Optionen können Sie sich beim Aufruf von cmk-update-agent register --help anzeigen lassen. Are you aware of any automation scripts/commands methods with registering agent/TLS for over 800+ hosts? Hello together, i got the an Simular Issue after an Upgrade from the 2. raptorswithhats. Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. 1 gave 404 Not Found: Host 127. My server proxmox follow the guide from checkmk, where create the user, policy, open port 6556, special agent. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. domain. The port can either be included in the server name argument ( -s ), or it can be left out. The cmk-agent user was sucessfully created. 2 system. Ich registriere den Agent : sudo cmk-agent-ctl register --hostname hlcmk --server 10. 0. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. When trying to register the checkmk agent: Access is denied:. DOMAIN. Sie können zwei Checkmk-Appliances. Yes I did use the” cmk-agent-ctl register command, after that I got this message. com:8000/cmk. CMK 2. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. This prevents host registration (cmk-agent-ctl register) and registration status queries (cmk-agent-ctl. The controller is executed under the cmk-agent user, which has limited privileges, e. And with the CMC: OMD [mysite]:~$ cmk -O. 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. mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. Now you need to register the agnet for TLS handshake. Version: 2. Checkmk Enterprise Edition 2. service then restart xinitd and tell me about the output of ss -tulpn | grep 6556. 1 Like. 2 Delete all directories/files of the agent controller from the host. Rg, ChristianWindows installer ¶. Now the cmk-agent-ctl-daemon. Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. 0. $ sudo cmk-agent-ctl register --hostname localhost --server checkmk. 0p6. Could you please check who is claiming port 6556?. In your case. To summarize: If you want to customize a Checkmk configuration and activate the changes, in Nagios you will subsequently require: OMD [mysite]:~$ cmk -R. local --server 10. exe' register -s checkmk. Bis einschließlich b2 war es so, dass der cmk-agent-ctl NICHT am Socket lauscht, solange er nicht für die TLS Verbindung registriert ist. worked fine for me. I installed the CheckMK Agent on a TrueNAS SCALE host. If it is systemd please give us the output of systemctl --version. 0p20 Debian 11. Dann hast du die Herangehensweise schon gefunden, wenn man die Zertifikate noch nicht im Griff hat. I am also running Puppet so automation is a thing. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. ourcompany. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. 168. 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”). We’ll come back to you to ask for. 0b4-1_all. CMK agent is up and running, host is added to Check MK server and now I want to set up TLS connection. mydomain. 0 Agent socket: inoperational (!!)The agent control use the port 8000 for communication. Ultimately, Checkmk was showing the agents were not registered because they were not in fact registered. All commands to be executed on the host to be monitored. cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. 0p9. Now you need to register the agnet for TLS handshake. exe register --hostname HOST --server SERVER: 8001 --site SITE --user USER. 0p15 OS version: TrueNAS SCALE 22. Could you please check who is claiming port 6556? ss -tulpn | grep 6556 This should be cmk-agent-ctl in daemon mode. 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. 1. i’am new to checkmk and trying to configure the agent but getting the same message, i couldn’t understand why. Join thousands of sysadmins and receive free professional tips and tricks to help you monitor your IT-infrastructure. Agent Registration (Pairing) for TLS Encryption. 0) master 1. 4. Release notes. Going from one patch level to another one (like from p16 to p20) basically is: dpkg -i checkmk…new. For example, the registration crashed with "500 Internal Server Error" for users without the permission "Write access to all hosts and folders". socket systemctl status cmk-agent-ctl-daemon. 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. socket Then restart your xinetd (or just reboot). For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. socket failed. Please provide me with the output of:. 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. 0. 0. Dear friends of Checkmk, the new stable release 2. en. sh script. a re-register has the same effect, even with a cmk-agent-ctl delete and a “remove TLS registration”. root@kerneltalks # service xinetd reload. This morning all Windows Agents were suddenly no longer registered. ss -tulpn | grep 6556 tcp LISTEN 0 4096 *:6556 : users:((“cmk-agent-ctl”,pid=425,fd=9)) On the. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. OS version: TrueNAS SCALE 22. exe” register --site yousitename --server yourcmkserver --user automation --hostname windows_box_hostname --password1. The agent controller is well deployed and configured : “C:Program Files (x86)checkmkservicecmk-agent-ctl. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. CMK 2. com. socket → /lib/systemd/system/check-mk-agent. d, only the check-mk-agent can be found: [root@jumphost]# cmk-agent-ctl register --hostname myclient \. en. The hostname “localhost” was wrong. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. CMK version: 2. 6 Likes. Disable TLS registration on the CMK server: Properties of host, menu entry Host > Remove TLS registration; Afterwards, ss should show xinetd claiming the connection test should work. 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. When I try to register the agent on the host system with: cmk-agent-ctl register --hostname some_hostname --server 127. latest (2. 4.