1 Like. cmk-agent-ctl. 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. 0. It has to match the actual hostname used by the Checkmk server, found under “Setup” > “Hosts”. CMK version: 2. I had to purge the client, reinstall and reboot the host to get the client to listen on port 6556. ss -tulpn | grep 6556 This should be cmk-agent-ctl in daemon mode. 0 onwards), you have to add the following rights (internal name "general. 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. If it is xinetd remove the Xinetd config file for the Checkmk agent and just reinstall the agent package. CMK 2. 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). The Linux agent of Checkmk version 2. Checkmk Enterprise Edition 2. , I had to put the public hostname). Unfortunately, the problem remains: C:\WINDOWS\system32>"C:\Program Files (x86)\checkmk\service\cmk-agent-ctl. 2. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. Agent Registration (Pairing) for TLS Encryption. Registration indeed is good. Der Agent Controller cmk-agent-ctl kümmert sich um den Transport der vom Agentenskript gesammelten Daten. local -i home -U cmkadmin ERROR [cmk_agent_ctl] Failed to discover agent receiver port from Checkmk REST API, both with and Registration indeed is good. rs:41: Loaded config from. The cmk-agent user is created during the installation of the agent. 2. 16-150300. 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. 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. no login shell, and is used only for data transfer. 4. 1 the monitoring data sent from the monitored host to the monitoring server is TLS encrypted and compressed by default. Tested adding both a firewall run on the 2019 server for both 6556 in and out. 02. 0p9. 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. mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. 7 LTS Attempting to register windows host with TLS upon performing corresponding command cmk-agent-ctl. If I try to register (not register-new) a server, which has been in the monitoring since yea…The agent control use the port 8000 for communication. 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. The controller is executed under the cmk-agent user, which has limited privileges, e. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. After the installation everything worked. folgenden Register Befehl benutzt. If it is systemd please give us the output of systemctl --version. cmk-agent-ctl register -H ovhxxx -s publicIP:8194 -i cmk -U automation. 4. 4. " Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. 0. en. latest (2. local -i home -U cmkadmin ERROR [cmk_agent_ctl] Failed to discover agent receiver port from Checkmk REST API, both. The cmk-agent user is created during the installation of the agent. 1 does not exist. 57. This is the command we used to register the agent: C:Windowssystem32> "C:Program Files (x86)checkmkservicecmk-agent-ctl. 1. 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”). Created symlink /etc/systemd/system/sockets. 7 I have problem since the connection to the cmk server has to be ssl encrypted. mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. 1. 0. As suggested in another post i read i checked:-that port 8000 is open-omd config show | grep AGENT_RECEIVER show port 8000Description: Proxmox VE. Rg, ChristianThe Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. service1. The port can either be included in the server name argument ( -s ), or it can be left out. 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. 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. wants/check-mk-agent. 1. user -vv INFO [cmk_agent_ctl] starting. service --now $ sudo systemctl restart check-mk-agent. CMK version: 2. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. CMK 2. g. 10. So if you make any changes to the config file then you need to reload configuration or restart the agent. 0 the new Linux agent with the Agent Controller supports the registered, TLS-encrypted and compressed pull mode. 0p15. 0 onwards), you have to add the following rights (internal name “general. Become a Dealer. 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. socket failed. g. If the host is monitored by multiple sites, you must register to all of them. 1. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. TLD -i SITE-NAME -U USERNAME. –user automation --password “xxx”. 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. You’ll also need to do something like cmk-agent-ctl register. 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. Sehr beliebt ist z. I created the folder manually and changed ownership, and now the registration. serviceThe Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. After that I got the error: Version: 2. 1. net:8000--site cmk –user automation --password MYTOKEN sudo reboot (To verify it continues to work post-reboot) andreas-doehler (Andreas) August 15, 2022, 7:25pm 6. 0. , I had to put the public hostname). 1 Like. 1. DOH I forgot I had set a custom port for agent receiver as i had a conflict for 8000 on my docker host. 1. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. 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. 0p10 OS: linux The hosts agent supports TLS, but it is not being used. 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. Sie können sich mit cmk-agent-ctl help die Kommandohilfe anzeigen lassen, auch spezifisch für die verfügbaren Subkommandos, z. 0/26. agent_pairing") to their role. 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. This port can be found out via omd config > Basics > AGENT_RECEIVER_PORT Of course, this port has to be exposed for the. 0p17. OS version: TrueNAS SCALE 22. Im justed deleted the automation User. 514. XXX. Checkmk. 0. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. 2 system. 1. 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. 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. For more information try --help Command for registration. com. CMK 2. C:\Program Files (x86)\checkmk\service>cmk-agent-ctl. I accept the certificate. Something like this. CMK Version: CRE 2. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. 0 adds the Agent Controller and new features to the agent program. g. 1. 1. This query is attempted both with and both queries fail, the controller aborts, otherwise, the result of the first sucessful query is. 1. 5. 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. 4 --server 1. 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. You can learn how to use the agent here. 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. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. p3 OS version: CentOS 8. 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. a re-register has the same effect, even with a cmk-agent-ctl delete and a “remove TLS registration”. 0p11 Agent socket: inoperational (!!) Version: 2. It seams you use a Debian system. 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. root@mgmonitor02:~# cmk-agent-ctl register --hostname MGMonitor --server localhost --site sitename --user omd --password omd ERROR [cmk_agent_ctl] Failed to discover agent receiver port from Checkmk REST API, both with and c3rberus (MD) December 17, 2021, 4:52am 3. 4. 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. no login shell, and is used only for data transfer. 0-1_all. To register a host, users need the following permissions: Agent pairing. Ultimately, Checkmk was showing the agents were not registered because they were not in fact registered. 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. no login shell, and is used only for data transfer. 168. 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, that will not be possible. You can confirm this by telnetting from your OMD site to the monitored server on tcp port 6556:Checkmk Enterprise Edition 2. The registration is done using the Agent Controller cmk-agent-ctl, which provides a command interface for configuring the connections. mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. 1. 1. I am using the Raw edition of CheckMK for my (rather large) Hobbyist stuff. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. If you want to use the agent in legacy mode, you need to disable cmk-agent-ctl in bakery rules. copy the cmk-agent-ctl for the architecture you are using to e. ColinP November 12, 2022, 12:44pm 1. So, Checkmk is ready. DOMAIN. DOMAIN. The cmk-agent user was sucessfully created. 1. Please provide me with the output of: systemctl status check-mk-agent. 1:8655 --site cmk --user cmk_admin. rs:14: starting [2023-02-10 12:54:18. You can display. The cmk-agent user was sucessfully created. CMK version: 2. exe' register -s checkmk. gerhards. com. 0p9. service should work as expected. Sehr beliebt ist z. 1. hardware:~#] cmk-agent-ctl. cmk-agent-ctl register --hostname localhost --server server:8000 --site mysite --user cmkadmin -vv. Now the cmk-agent-ctl-daemon. 0 last week. New replies are no longer allowed. 0-1_all. @SeyRyuu I have potential good news for you, then… I resolved this yesterday . After a reboot the cmk-agent-ctl-daemon and the check-mk-agent. From here click Create new host. 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. 1. After a reboot the cmk-agent-ctl-daemon and the check-mk-agent. 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. no login shell, and is used only for data transfer. –hostname WindowsServer ^. Wie hier beschrieben, sollten alle Bedingungen für eine TLS encryption erfüllt sein. Bei einem Netzwerkdienst liegt es nahe, den Dienst über das Netzwerk abzufragen und über diesen Weg auch zu überwachen. g. In case it is left out, the agent controller tries to query the port from the REST API. The Windows agent. You have three options here: Make the REST API call work. Could you please check who is claiming port 6556?. Monitoring Windows - The new agent for Windows in detail. We strongly recommend to enable TLS by registering the host to the site (using the cmk-agent-ctl register command on the monitored host). When I try to register the agent on the host system with: cmk-agent-ctl register --hostname some_hostname --server 127. To summarize: If you want to customize a Checkmk configuration and activate the changes, in Nagios you will subsequently require: OMD [mysite]:~$ cmk -R. 0 2. From its very beginning, monitoring Windows servers has been one of the most important tasks performed by Checkmk. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. gierse,. exe . 0. cmk-update-agent register -v -H COMPUTERNAME -U register -S xxxxxxxxxxxxxxxxx. local:8000 -s checkmk. 1. For a user to be able to do the cmk-agent-ctl register, which is needed to enable the TLS encryption (available from 2. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. Dazu verwendet Checkmk teils eigene, teils bereits existierende Plugins. Hello. Deutsch. 2 system. However, the certificate rolled out by the agent updater ruleset seems to be insufficient. 234. mschlenker (Mattias. 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. 2. CMK 2. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. I am trying to register an agent installed on a Windows Server 2019. CMK version:2. 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). „TLS is not activated on monitored host (see details)“. OK, let’s figure out who is doing what. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. It seams you use a Debian system. cmk-update-agent register -s monitor2 -i mysite -H monitor2 -U cmkadmin. slice (loaded active) and check_mk. Just like it’s the case for the /etc/cmk-update-agent. 0 or earlier. Version: 2. 0 (Blue Onyx) [root@CHECKMK services]# cmk-agent-ctl. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. Hi everyone, below is the output of the “cmk-agent-ctl. If I try to register it with the command: cmk-agent-ctl register --detect-proxy --hostname FOO --server bla. scheint mir noch nicht ganz ausgereift. 0. 0. 2 Delete all directories/files of the agent controller from the host. - it goes from CRIT → OK after a while or sometimes message comes with with service. 1. 1. ss -tulpn | grep 6556 tcp LISTEN 0 4096 *:6556 : users:((“cmk-agent-ctl”,pid=425,fd=9)) On the. root@kerneltalks # service xinetd reload. 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. exe register --hostname xxx --server checkmk:8000 --site monitoring --user automation --… Hi, in the register-command use --server checkmk without the port, maybe there is a formatting problem with that. If the host is monitored by multiple sites, you must register to all of them. cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. 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. Diese werden auch als aktive Checks bezeichnet. This can be problematic if you are monitoring the same host from a site running Checkmk version 2. {"payload":{"allShortcutsEnabled":false,"fileTree":{"agents":{"items":[{"name":"cfg_examples","path":"agents/cfg_examples","contentType":"directory"},{"name. Specify the correct port when calling the registration command. To be more precise:. I’ve installed the agent and succesfully register on OS windows 7x64 and. The Agent Receiver tells the Agent Controller. I was using 8101 so after i set this it worked perfectly. Register the host on the Checkmk server by invoking cmk-update-agent register. com:443 -i cmk --user automation . 0. 0 adds the Agent Controller and new features to the agent program. 0 adds the Agent Controller and new features to the agent script. Now the cmk-agent-ctl-daemon. cee Ubuntu 16. 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. 1. 1. You can learn how to use the agent here. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. service should work as expected. If the host is monitored by multiple sites, you must register to. 1. 0p6. ERROR [cmk_agent_ctl] Failed to run as user 'cmk-agent'. Here you can enter a host’s name simply in order to view the host’s configuration (e. deb Monitored System (Host): Checkmk Agent version: 2. If it is the second option you should review roles & permissions. socket (failed failed) so I stopped and disabled them, then did systemctl daemon-reload and systemctl. Since the machine you’re trying to monitor is still 2. The controller is executed under the cmk-agent user, which has limited privileges, e. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. It has to be a check_mk user, try with cmkadmin. In your case doing proxy. Just to. 0. This component is separate from the Agent Updater. 0. Installed the agent on a Server (Windows and Ubuntu) Registered the agent with the following command: cmk-agent-ctl register --hostname --server --site --user automation --password. 1 server? You have to run the cmk-agent-ctl on the machine running the agent, not from the server. 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. mit cmk-agent-ctl help register. Die Seite habe ich auch schon gefunden aber wie gesagt so richtig verstanden bzw. 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). Agent Victoria, British Columbia 1970's Members Murray Acton ~ Guitar, Vocals Steve Andreas ~ Bass, Vocals Peter Bryant ~ Drums, Vocals Wayne Darling ~. Jun 17 10:57:15 nc systemd[1]: Stopped Checkmk agent controller daemon. local:8000 -s checkmk. it --server 192. cmk-agent-ctl. ). Ping works, Agent reports Communication Failed: timed out. 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. 6 I have an external cloud host that I would like to monitor with in-house CMK server. service systemctl disable cmk-agent-ctl-daemon. 04. exe greift auf ihn zu. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. it --server 192. exe" status It also seems that you have multiple sites on your Checkmk server based on port 8001 in the response. check_mk agent runs on top of xinetd service in Linux. Update: Nervermind. 1. 0. Rg, ChristianThe Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. 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. Dear friends of Checkmk, the new stable release 2. 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. Hello. 2 system. 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”). domain. 1. 0p15 OS version: TrueNAS SCALE 22. 0. checkmk-v2-1. It has to match the actual hostname used by the Checkmk server, found under “Setup” > “Hosts”. The registration is done using the Agent Controller cmk-agent-ctl, which provides a command interface for configuring the connections. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection.