0. 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 OS Version: Appliance 1. Installing an agent and starting monitoring was straightforward - everything happens over SSH. The Windows agent of Checkmk version 2. The additional port 8000 seems necessary for creating TLS connection. Registration indeed is good. The agents' Agent Controller makes a request for registration to the server’s Agent Receiver, transmitting the data required to create the host. deb. pem. The cmk-agent user was sucessfully created. But when the distributed server wants to query the remote agent: [agent] Communication failed: [SSL: SSLV3_ALERT_HANDSHAKE_FAILURE] sslv3 alert handshake failure (_ssl. hinbekommen habe ich es nicht. {"payload":{"allShortcutsEnabled":false,"fileTree":{"agents":{"items":[{"name":"cfg_examples","path":"agents/cfg_examples","contentType":"directory"},{"name. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. You can learn how to use the agent here. 0. $ sudo cmk-agent-ctl register --hostname localhost --server checkmk. 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. The controller is executed under the cmk-agent user, which has limited privileges, e. Redirecting to /bin/systemctl reload xinetd. Version: 2. 1. root@kerneltalks # service xinetd reload. –server checkmk. Nun wird der Service „CheckMK Agent“ – Service mit Warning angezeigt und es liegt wohl daran. I am not able to debug the cmk-agent-ctl since it is in binary form: You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. Hello, I updated my CheckMK installation to firmware 1. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. com:443 -i cmk --user automation . Hello. rs:14: starting [2023-02-10 12:54:18. com:443 -i cmk --user automation . 0. Hi @P. 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 --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. I have the server up and running and ~50 VMs online, all is working well. CMK 2. 0p17. This worked perfectly fine in CMK 2. From its very beginning, monitoring Windows servers has been one of the most important tasks performed by Checkmk. exe' register -s checkmk. copy the cmk-agent-ctl for the architecture you are using to e. CMK version: 2. Bei einem Netzwerkdienst liegt es nahe, den Dienst über das Netzwerk abzufragen und über diesen Weg auch zu überwachen. sh script. The exact command line is this: cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. I get a return with value: 16 The web test connection has a successfull ping but the agent. Die Seite habe ich auch schon gefunden aber wie gesagt so richtig verstanden bzw. Welcome to Checkmk. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. 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. Server certificate details: [2022-06-01. But if cmk-agent-ctl cannot be started, access fails. 1. en. 1. The controller is executed under the cmk-agent user, which has limited privileges, e. Einen auf den Server auf der Docker Service läuft (OpenSuse Tumbleweed), sowie einen Windows Server 2016. We’ll come back to you to ask for. 0/26. slice (loaded active) and check_mk. Danach erfolgte die Registrierung und der Update Befehl. 2 release. Could you please check who is claiming port 6556?. So if you make any changes to the config file then you need to reload configuration or restart 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. g. it --server 192. 2. Please provide me with the output of: systemctl status check-mk-agent. 0. Just to. The cmk-agent user is created during the installation of the agent. 0 last week. Waren die angegebenen Werte korrekt, werden Sie aufgefordert, die Identität der Checkmk-Instanz zu bestätigen, zu der Sie die Verbindung herstellen wollen. If the host is monitored by multiple sites, you must register to all of them. This might be a bug. This can be problematic if you are monitoring the same host from a site running Checkmk version 2. If it is xinetd remove the. 2 system. 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. 0p17. cmk-agent-ctl register --server cmkserver:443 --trust-cert --site cmksite --user username --password password --hostname monitoringhost Then take a look it /etc/xinet. cmk-agent-ctl register --hostname localhost --server server:8000 --site mysite --user cmkadmin -vv. 0. The registration is done using the Agent Controller cmk-agent-ctl, which provides a command interface for configuring the connections. I am also running Puppet so automation is a thing. no login shell, and is used only for data transfer. Dazu verwendet Checkmk teils eigene, teils bereits existierende Plugins. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. You’ll also need to do something like cmk-agent-ctl register. CMK version: 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. The port can either be included in the server name argument ( -s ), or it can be left out. socket systemctl status cmk-agent-ctl-daemon. socket systemctl status cmk-agent-ctl-daemon. WalterH (Walter Hofstädtler) May 30, 2022, 5:42pm 31. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. this is initiated by the cloud host contacting CMK server behind our office. 1. cre default. Troubleshooting. Diese werden auch als aktive Checks bezeichnet. C:\Program Files (x86)\checkmk\service>cmk-agent-ctl. 489987 +01:00] INFO [cmk_agent_ctl] srclib. 0. 0. TLD -i SITE-NAME -U USERNAME This worked perfectly fine in CMK 2. The controller is executed under the cmk-agent user, which has limited privileges, e. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. root@waw1-monitor2:/omd# cmk-update-agent -v. ss -tulpn | grep 6556 tcp LISTEN 0 4096 *:6556 : users:((“cmk-agent-ctl”,pid=425,fd=9)) On the. 1 gave 404 Not Found: Host 127. gerhards. But before we start with the actual. Checkmk Server: Checkmk version: 2. 1. 1 server? You have to run the cmk-agent-ctl on the machine running the agent, not from the server. service: Scheduled restart job, restart counter is at 2. tsi: Getting target agent configuration for host ‘localhost’ from deployment serverHi, looking for a windows variable to use to automate agent registration for 200+ hosts that queries hosts in “lowercase” as opposed to “uppercase” (yes our hosts are configured in lower case in Checkmk)So please stop and disable the services for the new agent controller: systemctl stop cmk-agent-ctl-daemon. Ich registriere den Agent : sudo cmk-agent-ctl register --hostname hlcmk --server 10. 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. Yes I did use the” cmk-agent-ctl register command, after that I got this message. 4. Specify the correct port when calling the registration command. 0-1_all. 0-1_all. Sie können sich mit cmk-agent-ctl help die Kommandohilfe anzeigen lassen, auch spezifisch für die verfügbaren Subkommandos, z. This might be a bug. Upon first try, “cmk-agent-ctl register. en. It seams you use a Debian system. The cmk-agent user was sucessfully created. 1. service: Scheduled restart job, restart counter is at 2. The Windows agent of Checkmk version 2. 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. exit # leave the site user shell. 1. This port can be found out via omd config > Basics > AGENT_RECEIVER_PORT Of course, this port has to be exposed for the. 1 Like. Here it makes sense to pass the required registration information directly via the command. Could you please check who is claiming port 6556? ss -tulpn | grep 6556 This should be cmk-agent-ctl in daemon mode. 2 system. 1 sec. 0. I am trying to register an agent installed on a Windows Server 2019. 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. XXX. We’ll come back to you to ask for. 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. 1. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. XXX. 0 or earlier. I created the folder manually and changed ownership, and now the registration. 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:Yes I did use the” cmk-agent-ctl register command, after that I got this message. 0p10 OS: linux The hosts agent supports TLS, but it is not being used. 04. CMK 2. 0p20 Debian 11. when i executing the command remotely via powershell i’m. gerhards. It has to match the actual hostname used by the Checkmk server, found under “Setup” > “Hosts”. rs:14: starting [2023-02-10 12:54:18. Please provide me with the output of:. i’am new to checkmk and trying to configure the agent but getting the same message, i couldn’t understand why. 1. Ultimately, Checkmk was showing the agents were not registered because they were not in fact registered. com--site FOO --user BAR -. DOH I forgot I had set a custom port for agent receiver as i had a conflict for 8000 on my docker host. 4. 0b4-1_all. Thanks for your responses! @cyr0nk0r I rebaked the Agent using HTTP only and got rid of the. Another gotcha I came across was trying to run the register, make sure you are using admin cmd ( which you are ), then cut and paste the command in full : “C:\Program Files (x86)\checkmk\service\cmk-agent-ctl. en. 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. 2 system. Glaube das forum war gerade weg aber um deine Fragen zu beantworten: “C:Program Files (x86)checkmkservicecmk-agent-ctl. In case it is left out, the agent controller tries to query the port from the REST API. no login shell, and is used only for data transfer. 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”). 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. 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. sh script. But if cmk-agent-ctl cannot be started, access fails. cmk-agent-ctl. local -i home -U cmkadmin ERROR [cmk_agent_ctl] Failed to discover agent receiver port from Checkmk REST API, both. I had to purge the client, reinstall and reboot the host to get the client to listen on port 6556. 10. –hostname WindowsServer ^. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. Monitoring Linux - The new agent for Linux in detail. ColinP November 12, 2022, 12:44pm 1. omd start. 0p6. 3. If you use the bakery, the agent was baked with enabled cmk-agent-ctl. However, there is a difference between console output of “cmk-agent-ctl status” and “cmk_agent_ctl_status” from agent output (downloaded via “Download. com:8000 --site itbetrieb --user automation --password xxxxxxxx --trust-cert -vv Version: 2. evilguy January 8, 2023, 7:53pm 3. 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”). The cmk-agent user was sucessfully created. Since the machine you’re trying to monitor is still 2. service should work as expected. You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. ColinP November 12, 2022, 12:44pm 1. Agent Victoria, British Columbia 1970's Members Murray Acton ~ Guitar, Vocals Steve Andreas ~ Bass, Vocals Peter Bryant ~ Drums, Vocals Wayne Darling ~. 1 Like. gerhards. CMK version:2. 0. mit cmk-agent-ctl help register. ╰─$ sudo cmk-agent-ctl status Version: 2. 1. Using previous settings from /etc/cmk-update-agent. Created symlink /etc/systemd/system/sockets. CMK 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. Der für die verschlüsselte Kommunikation mit dem Checkmk-Server zuständige Agent Controller cmk-agent-ctl. 0. To register a host, users need the following permissions: Agent pairing. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. 0. Without register, the communication will handle also via port 8000, so you need to clarify if this port is open. I have around 60 Windows servers which I have checked using a backed agent. g. The agent control use the port 8000 for communication. I am experiencing a problem with registering the agent: CMK version: 2. 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. 0 2. com --site FOO --user BAR --password FOO. B. 0. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. We strongly recommend to enable TLS by registering the host to the site (using the `cmk-agent-ctl register` command on the monitored host). Here is the deep link to the section in the manual:. Sie können sich mit. 2. 1. 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. This might be a bug. All commands to be executed on the host to be monitored. 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. . 4. cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. In case it is left out, the agent controller tries to query the port from the REST API. rs:14: starting [2023-02-10 12:54:18. check_mk agent runs on top of xinetd service in Linux. 1. Agent auf allen Monitored Hosts installiert. Ok, so the user I’m using to do the agent registration is part of the Administrator group, which is a default group that has all the permissions regarding agents. 02. Inside the container: root@9529f647cd27:/# omd version OMD - Open Monitoring Distribution Version 2. socket failed. We strongly recommend to enable TLS by registering the host to the site (using the `cmk-agent-ctl register` command on the monitored host). Here is what I have done roughly: Added and configured the agent rules. 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 adds the Agent Controller and new features to the agent program. 7 I have problem since the connection to the cmk server has to be ssl encrypted. 1 server? You have to run the cmk-agent-ctl on the machine running the agent, not from the server. hardware:~#] cmk-agent-ctl. Checkmk Enterprise Edition 2. I try with: cmk-agent-ctl register --hostname MYHOST --server CMKHOST --site MYSITE --user cmkadmin --password ‘MYPASSWORD’ Then I get the message: 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. 04 Command used for registration: cmk-agent-ctl. You might apt-get remove the old Checkmk package when no site is using it any more. 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. 0-1_all. g. service: Scheduled restart job, restart counter is at 2. 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. If the host is monitored by multiple sites, you must register to all of them. 1. socket (failed failed) so I stopped and disabled them, then did systemctl daemon-reload and systemctl. On all other hosts the cmk-agent-ctl-daemon fails and registration is not possible. The registration is done using the Agent Controller cmk-agent-ctl, which provides a command interface for configuring the connections. DOMAIN. 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…. 1. Anschließend installieren Sie den Agenten mit allen Konfigurationsdetails für den zu überwachenden Host durch einen abschließenden Aufruf des Agent-Updater-Plugins. 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. 1. CMK 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 --password pass. ERROR [cmk_agent_ctl] Failed to run as user 'cmk-agent'. It seams you use a Debian system. 1. exe register --hostname HOST --server SERVER: 8001 --site SITE --user USER. sh script. 02. And now. 1. ). CMK version: 2. 2. After the installation everything worked. After a reboot the cmk-agent-ctl-daemon and the check-mk-agent. The cmk-agent user is created during the installation of the agent. 0p20 Debian 11. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. The hosts agent supports TLS, but it is not being used. no login shell, and is used only for data transfer. 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. The Hostname is the familiar name that Checkmk will use for the monitoring. 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. CMK 2. This was not expected as I created rules in “Agent controller” {'agent_ctl_enabled': True}. 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. 0 adds the Agent Controller and new features to the agent script. 2. 0. 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. service; After that you can register your hosts as usual. If the host is monitored by multiple sites, you must register to all of them. ╰─$ sudo cmk-agent-ctl status Version: 2. 0-1_all. Für Linux habe ich cmk-agent-ctl register --hostname xxx --server. omd stop mysite. Distribute below files from new baked agent to all agents that were baked with expired certificate. d/ there might be a residual configuration file called checkmk or similar. 0p15 OS version: TrueNAS SCALE 22. 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. I had to add the checkmk user again. 1. 0/26. 0 adds the Agent Controller and new features to the agent program. 1. I installed the CheckMK Agent on a TrueNAS SCALE host. Monthly Promotions Product Specials and Monthly Flyers Emailed Right to You! Online Ordering Check Price and. domain. 2. OS version: Rocky Linux release 9. CMK agent is up and running, host is added to Check MK server and now I want to set up TLS connection. In your case doing proxy. Upon first try, “cmk-agent-ctl register. domain. local:8000 -s checkmk. Ausgabe ist: Local: Hier scheint alles ok zu seine, nur taucht der Host im. 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 cmk-agent user was sucessfully created. 0p16-1. 0p20 Ubuntu 20. no login shell, and is used only for data transfer. exe” register --site yousitename --server yourcmkserver --user automation --hostname windows_box_hostname --password1. 1 agent. The Agent Receiver tells the Agent Controller. However, the certificate rolled out by the agent updater ruleset seems to be insufficient. The port can be different in your case. Now the service is active and listening. Der Benutzer cmk-agent wird während der Installation des Agentenpakets. slice (loaded active) and check_mk. Finally, in Bake agent packages, activate. Checkmk Raw Edition 2. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. 2. Registration indeed is good. Baked and signed the agent. You can analyze this by having a look at the server’s certificate chain. com. cfg. 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). state. worked fine for me. In your case doing proxy. The hosts agent supports TLS, but it is not being used. 1. 1. Specify the correct port when calling the registration command. This component is separate from the Agent Updater.