0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. exe to register the Agent Controller. gierse,. Upon first try, “cmk-agent-ctl register. I’m running 2. Thanks for your responses! @cyr0nk0r I rebaked the Agent using HTTP only and got rid of the. no login shell, and is used only for data transfer. g. 0p20 Debian 11. Back on server, Add server under hosts. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. Welcome to Checkmk. In the following Monitoring agents box, you specify two important options for the auto-registration. 1 gave 404 Not Found: Host 127. socket failed. After the installation everything worked. Become a Dealer. 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. The hosts agent supports TLS, but it is not being used. Hi everyone, below is the output of the “cmk-agent-ctl. If the Agent Receiver accepts the request,. I’m running 2. root@waw1-monitor2:/omd# cmk-update-agent -v. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. 1. 1. Copy the cmk-update-agent binary or the cmk_update_agent. Reload check_mk configuration using below command –. Hosts, services and agents. Are the Linux systems affected by cmk-agent-ctl not starting using a IPv4 only setup?. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. Then I installed the agent on the server, and registered, and this part finally worked, the server can monitor itself (even if I don’t understand why cmk-agent-ctl register --hostname 127. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. service should work as expected. DOMAIN. 1. 1. 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). Please provide me with the output of: systemctl status check-mk-agent. If it is xinetd remove the. 0 Zeiten registriert) Registrierung über den Servernamen “checkmk” meines CheckMK Servers und der Instanz “lexx”. The cmk-agent user was sucessfully created. Das zu bestätigende Server-Zertifikat haben wir aus Gründen der. 4. com. 1 Like. 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. 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. 1. no login shell, and is used only for data transfer. domain. This topic was automatically closed 365 days after the last reply. Haven’t done anything else with the install yet. Thank you very much to assist me on this way! system (system) Closed September 26, 2023, 4:01pm 9. exe” register --site yousitename --server yourcmkserver --user automation --hostname windows_box_hostname --password1. service1. In Checkmk version 2. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. The cmk-agent user was sucessfully created. mydomain. Alle Hosts angelegt mit Hostname und IP Adresse. This option is only available in the Cloud Edition. In your case doing proxy. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. 0 2. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. 0. 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 component is separate from the Agent Updater. 0p20 Debian 11. Ikkarus13 (Sascha Kunimünch) May 30, 2022, 8:00am 1. $ sudo cmk-agent-ctl register --hostname localhost --server checkmk. The cmk-agent user is created during the installation of the agent. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. 0. Hello, I have a problem with enabling TLS in CheckMk 2. Could you please check who is claiming port 6556?. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. py script to the host to be monitored (both can be found at ~/share/check_mk/agents/plugins on the Checkmk server). Danach erfolgte die Registrierung und der Update Befehl. TLD -i SITE-NAME -U USERNAME This worked perfectly fine in CMK 2. 0b4-1_all. The additional port 8000 seems necessary for creating TLS connection. If you want to use the agent in legacy mode, you need to disable cmk-agent-ctl in bakery rules. sh script. I am trying to register an agent installed on a Windows Server 2019. 1. C:Program Files (x86)checkmkservice>cmk-agent-ctl. rs:14: starting [2023-02-10 12:54:18. But nothing worked. Welcome to the Checkmk User Guide. cmk-agent-ctl register --hostname localhost --server server:8000 --site mysite --user cmkadmin -vv. domain. copy the cmk-agent-ctl for the architecture you are using to e. 0p13. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. Just like it’s the case for the /etc/cmk-update-agent. 1. 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. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. CMK version: 2. rs:41: Loaded config from. The controller is executed under the cmk-agent user, which has limited privileges, e. worked fine for me. rs:41: Loaded config from. ago. Now you need to register the agnet for TLS handshake. TLD -i SITE-NAME -U USERNAME This worked perfectly fine in CMK 2. 1 Like. The cmk-agent user was sucessfully created. 1. CMK 2. mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. If the host is monitored by multiple sites, you must register to. 0p15. I have around 60 Windows servers which I have checked using a backed agent. New install of CMK (via RPM) - trying to just register the localhost agent. CMK version: 2. c:2633). Agent Controller is not running, no config files can be found in the systemd directory and within xinetd. example. socket systemctl status cmk-agent-ctl-daemon. 1. Distribute below files from new baked agent to all agents that were baked with expired certificate. You might apt-get remove the old Checkmk package when no site is using it any more. hinbekommen habe ich es nicht. You can learn how to use the agent here. 0. 0 or earlier. domain. 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. cmk-agent-ctl register --hostname localhost --server server:8000 --site mysite --user cmkadmin -vv. local:8000 -s checkmk. 1. It has to match the actual hostname used by the Checkmk server, found under “Setup” > “Hosts”. We’ll come back to you to ask for. 5. Registration indeed is good. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. d, only the check-mk-agent can be found: [root@jumphost]# cmk-agent-ctl register --hostname myclient \. Username: xxxxx@pve. 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. 0. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. exe – register --trust-cert’ USAGE: cmk-agent-ctl. OS: Windows Server 2019. The port can either be included in the server name argument ( -s ), or it can be left out. You have to use cmk-agent-ctl. This is realized by a new component on the monitored hosts: The Checkmk agent controller cmk-agent-ctl. CMK 2. CMK Checkmk Enterprise Edition 2. The controller is executed under the cmk-agent user, which has limited privileges, e. 0p14 Agent socket: operational IP allowlist: 10. 4:8000 --site cmk --user cmkadmin --password password. 0. Finally, in Bake agent packages, activate. 0. 0p17. 5. Anyhow when registering the usual way as I did it. 1. 1. no login shell, and is used only for data transfer. Address: 401 Hartwig Court, 1208 Wharf Street, Victoria, BC, V8W 2P5, CanadaCTP Distributors. 0p15. 1 i’m trying to automate the process of registering our updated windows hosts to thee monitoring for tls encryption. 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. 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. WalterH (Walter Hofstädtler) May 30, 2022, 5:42pm 31. I installed the CheckMK Agent on a TrueNAS SCALE host. 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. service cmk-agent-ctl-daemon. 2. 1. Yes I did use the” cmk-agent-ctl register command, after that I got this message. (We used cmk-agent-ctl proxy-register → deploy json to host → cmk-agent-ctl import . Hello David, unfortunately --trust-cert changes nothing. Tested turning off firewall on 2019. Checkmk. This might be a bug. 0. This might be a bug. 1. 0-1_all. 0 onwards), you have to add the following rights (internal name "general. You already entered the right command with openssl s_client -connect SLAVE01:443. Hi everyone, below is the output of the “cmk-agent-ctl. 1. de:8000 --site mon --user admin. 02. Die entsprechenden Optionen können Sie sich beim Aufruf von cmk-update-agent register --help anzeigen lassen. 5 LTS I have had no issues registering the agent on internal servers, but I have two servers hosted in the cloud which are fully connected and have appropriate NAT rules and local firewall rules to allow the communication, but registering results in the error: ERROR [cmk_agent_ctl] Operation. This might be a bug. 0 adds the Agent Controller and new features to the agent script. 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. 1. DOMAIN. I had to add the checkmk user again. 02. exe” ^. to switch your agent into SSL mode (and not legacy mode), but that’s a different subject. OS version: TrueNAS SCALE 22. From its very beginning, monitoring Windows servers has been one of the most important tasks performed by Checkmk. d/ there might be a residual configuration file called checkmk or similar. This was not expected as I created rules in “Agent controller” {'agent_ctl_enabled': True}. user -vv INFO [cmk_agent_ctl] starting. service: Scheduled restart job, restart counter is at 2. socket failed. 0 2. cme and I’m no longer able to register new hosts with an automation user “cmkautomation” that I created a while ago (with role “agent_registration”). I had to add the checkmk user again. Dear friends of Checkmk, the new stable release 2. 168. On all other hosts the cmk-agent-ctl-daemon fails and registration is not possible. com--site FOO --user BAR --password FOO The new agents at 2. I am trying to register an agent installed on a Windows Server 2019. If the host is monitored by multiple sites, you must register to all of them. socket failed. You can confirm this by telnetting from your OMD site to the monitored server on tcp port 6556:Checkmk Enterprise Edition 2. check_für das Abfragen von Webseiten. 1. service should work as expected. 4. Record Keeping Keep a copy of your application and all submitted documents for your records. 0/26. You can either delete that file or remove xinetd altogether. py page via wget when I supply the correct credentials. The Linux agent of Checkmk version 2. 1. The hosts agent supports TLS, but it is not being used. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. py script to the host to be monitored (both can be found at ~/share/check_mk/agents/plugins on the Checkmk server). sh script. 0, that will not be possible. 489987 +01:00] INFO [cmk_agent_ctl] srclib. 1. 1 agent. CMK version:2. 10. Please provide me with the output of:. The registration is done using the Agent Controller cmk-agent-ctl, which provides a command interface for configuring the connections. com:8000/cmk. 14 --site burana_modena --user automation -. 4. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. 0p9. 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. scheint mir noch nicht ganz ausgereift. Checkmk Raw Edition 2. Checkmk Community Trouble after upgrading to 2. 45. SebLthr June 14, 2022, 8:17am 1. systemctl stop cmk-agent-ctl-daemon. Bei der Registrierung der Agents ergibt sich bei beiden Server folgender Fehler: <HOST>:~ # cmk-agent-ctl register --hostname <HOSTNAME> --server 192. raptorswithhats. 0 2. Checkmk Enterprise Edition 2. 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. Also, from the command line of the CentOS 7 server I can fetch the login. exe' register -s checkmk. Host can telnet on port 8000 of the server and a curl request works. register ^. If you want to use the agent in legacy mode, you need to disable cmk-agent-ctl in bakery rules. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. It has to be a check_mk user, try with cmkadmin. 1. Diese werden auch als aktive Checks bezeichnet. 04. „TLS is not activated on monitored host (see details)“. The cmk-agent user is created during the installation of the agent. 0. Für Linux habe ich cmk-agent-ctl register --hostname xxx --server. 1. agent_pairing") to their role. Create MSI file for windows 2019 server. 1. Version: 2. If it is xinetd remove the. to checkmk. I am trying to register an agent installed on a Windows Server 2019. The controller is executed under the cmk-agent user, which has limited privileges, e. If the host is monitored by multiple sites, you must register to all of them. This might be a bug. We will be asked for some information about the host. C:ProgramDatacheckmkagentconfigcasall_certs. 1. service: Scheduled restart job, restart counter is at 2. Segmentation fault (core dumped) The same result also with the all needed parameters for the registration. this is initiated by the cloud host contacting CMK server behind our office. to checkmk. 1. exe' register -s checkmk. Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. slice (loaded active) and check_mk. Added new host in CMK. 0. cmk -N myserver123 ). If the Agent Receiver accepts the request, registration is performed and a TLS-encrypted connection is established. Install the suitable Checkmk agent on the server you want to monitor and add the server as a host in Checkmk. 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. 0, that will not be possible. net:8000--site cmk –user automation --password MYTOKEN sudo reboot (To verify it continues to work post-reboot) andreas-doehler August 15, 2022, 7:25pm 6. You can learn how to use the agent here. domain. 0) master 1. CMK version: 2. cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. $ sudo systemctl restart cmk-agent-ctl-daemon. If you use the bakery, the agent was baked with enabled cmk-agent-ctl. 1 gave 404 Not Found: Host 127. 02. 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. exe' register -s checkmk. Reload check_mk configuration using below command –. CMK 2. The cmk-agent user is created during the installation of the agent. mit cmk-agent-ctl help register. CMK 2. target. exe . service systemctl disable cmk-agent-ctl-daemon. If the host is monitored by multiple sites, you must register to all of them. hardware:~#] cmk-agent-ctl. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. If the host is monitored by multiple sites, you must register to. OK, let’s figure out who is doing what. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. service should work as expected. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. Bis einschließlich b2 war es so, dass der cmk-agent-ctl NICHT am Socket lauscht, solange er nicht für die TLS Verbindung registriert ist. , I had to put the public hostname). Since the machine you’re trying to monitor is still 2. Reload check_mk configuration using below command –. 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. Here is a fix that worked for me, in case anyone else runs into this. 168. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. Hello, I have an issue with the registration of the host on a server : the agent-receiver on server-side is always crashing around 15/20 seconds and restarts. The hostname “localhost” was wrong. We strongly recommend to enable TLS by registering the host to the site (using the `cmk-agent-ctl register` command on the monitored host). 1But if cmk-agent-ctl cannot be started, access fails. 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. Ok, so the user I’m using to do the agent registration. 0p11 on Debian 11. root@kerneltalks # service xinetd reload. 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. 5. Sie können zwei Checkmk-Appliances. Das funktioniert. service You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. exe' register -s checkmk. 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 onwards), you have to add the following rights (internal name "general. gerhards. g. OS version: Rocky Linux release 9. In your case doing proxy. Now the service is active and listening. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. Explcit host: xxx. As suggested in another post i read i checked:-that port 8000 is open-omd config show | grep AGENT_RECEIVER show port 8000I think problem is in that a cloned account has all the same paths of it’s original account, i had cloned automation → automation2 as i had problems witth update agent not liking secrets meanwhile tls registration wanted secrets i think. Please provide me with the output of: systemctl status check-mk-agent. ColinP November 12, 2022, 12:44pm 1. But if cmk-agent-ctl cannot be started, access fails. exit # leave the site user shell. 1. Baked and signed the agent. Waren die angegebenen Werte korrekt, werden Sie aufgefordert, die Identität der Checkmk-Instanz zu bestätigen, zu der Sie die Verbindung herstellen wollen. /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. 1. 1. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. After the installation everything worked. 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. Please provide me with the output of: systemctl status check-mk-agent. Der für die verschlüsselte Kommunikation mit dem Checkmk-Server zuständige Agent Controller cmk-agent-ctl. Hi everybody, i’am new to checkmk and trying to configure the agent but getting the same message, i couldn’t understand why. There were some user permission issues with the agent registration (cmk-agent-ctl register. DOMAIN. 1. en.