exe' register -s checkmk. CMK version: 2. Welcome to Checkmk. 0. 02. secret with the password as String. 0p20 Debian 11. 0p15. If it is systemd please give us the output of systemctl --version. You can confirm this by telnetting from your OMD site to the monitored server on tcp port 6556:Checkmk Enterprise Edition 2. In your case doing proxy. The registration is done using the Agent Controller cmk-agent-ctl, which provides a command interface for configuring the connections. 0p19 CRE OS version: Debian 11. 0-1_all. com. g. 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. 0p17. Monthly Promotions Product Specials and Monthly Flyers Emailed Right to You! Online Ordering Check Price and. in the host run the register checkmk agent. Address: 401 Hartwig Court, 1208 Wharf Street, Victoria, BC, V8W 2P5, CanadaCTP Distributors. root@kerneltalks # service xinetd reload. omd su mysite. 0 OS Version: Appliance 1. 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. 0 or earlier. I had to add the checkmk user. Please provide me with the output of: systemctl status check-mk-agent. 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. com:8000 --site itbetrieb --user automation --password xxxxxxxx --trust-cert -vv Version: 2. Reload check_mk configuration using below command –. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. d, only the check-mk-agent can be found: [root@jumphost]# cmk-agent-ctl register --hostname myclient \. 1. 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. Segmentation fault (core dumped) The same result also with the all needed parameters for the registration. Created symlink /etc/systemd/system/sockets. 1. The port can either be included in the server name argument ( -s ), or it can be left out. We’ll come back to you to ask for. 0. Join thousands of sysadmins and receive free professional tips and tricks to help you monitor your IT-infrastructure. Hello. domain. 1. 2. net -i STAR -P 'XXXXX' -U automation -H sys-vbr02Apparently I’m too stupid to find the correct call for agent registration via REST API in any documentation. deb The monitored system is in a local network and have. 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. OK, let’s figure out who is doing what. Yes, it might seem weird. 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). „TLS is not activated on monitored host (see details)“. 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 you haven’t done yet please register the agent controller as well. Bis einschließlich b2 war es so, dass der cmk-agent-ctl NICHT am Socket lauscht, solange er nicht für die TLS Verbindung registriert ist. socket failed. 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. If you want to use the agent in legacy mode, you need to disable cmk-agent-ctl in bakery rules. server --server mein. B. 1. In your case doing proxy. exe – register --trust-cert’ USAGE: cmk-agent-ctl. Now you need to register the agnet for TLS handshake. this is initiated by the cloud host contacting CMK server behind our office. It has to match the actual hostname used by the Checkmk server, found under “Setup” > “Hosts”. 0. TLD -i SITE-NAME -U USERNAME. 1 does not exist. Could you please check who is claiming port 6556? ss -tulpn | grep 6556 This should be cmk-agent-ctl in daemon mode. example. 1. 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. omd start. If the host is monitored by multiple sites, you must register to all of them. 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. Redirecting to /bin/systemctl reload xinetd. - it goes from CRIT → OK after a while or sometimes message comes with with service. 3. CMK 2. 2. As suggested in another post i read i checked:-that port 8000 is open-omd config show | grep AGENT_RECEIVER show port 8000Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. Become a Dealer. There were some user permission issues with the agent registration (cmk-agent-ctl register. Register the host on the Checkmk server by invoking cmk-update-agent 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. 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. We strongly recommend to enable TLS by registering the host to the site (using the cmk-agent-ctl register command on the monitored host). gerhards. scheint mir noch nicht ganz ausgereift. 1. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. 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. 1. The Linux agent of Checkmk version 2. com. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. exe” register --site yousitename --server yourcmkserver --user automation --hostname windows_box_hostname --password1. no login shell, and is used only for data transfer. Either import the self signed certificate on this server paperless-ngx or use the same command with port. 1. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. The cmk-agent user is created during the installation of the agent. Agent Controller is not running, no config files can be found in the systemd directory and within xinetd. 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. My server proxmox follow the guide from checkmk, where create the user, policy, open port 6556, special agent. OS is Ubuntu 22. when i executing the command remotely via powershell i’m. CMK version: 2. exe register --hostname HOST --server SERVER: 8001 --site SITE --user USER. 1. deb. cmk-agent-ctl register -H ovhxxx -s publicIP:8194 -i cmk -U automation. Welcome to Checkmk. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. After a reboot the cmk-agent-ctl-daemon and the check-mk-agent. 489987 +01:00] INFO [cmk_agent_ctl] srclib. One of my hosts is producing this error, while most others register fine: root@sshgateway:~# cmk-agent-ctl register --hostname gateway. The windows installer supports the following command line arguments: /S - runs the installer silently /D= - sets the default installation directory. 4. 1. cmk-update-agent –v. Thank you very much to assist me on this way! system (system) Closed September 26, 2023, 4:01pm 9. {"payload":{"allShortcutsEnabled":false,"fileTree":{"agents":{"items":[{"name":"cfg_examples","path":"agents/cfg_examples","contentType":"directory"},{"name. Upon first try, “cmk-agent-ctl register. 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. omd stop mysite. 02. 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. Open the terminal that you want to monitor on your Linux server. 1. Die Registrierung erfolgt mit dem Agent Controller cmk-agent-ctl, der für die Konfiguration der Verbindungen eine Kommandoschnittstelle bietet. i’am new to checkmk and trying to configure the agent but getting the same message, i couldn’t understand why. I am also running Puppet so automation is a thing. 1. 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. I’m facing the same issue (and also running checkmk raw in a Docker container) on a X86_64 Debian Bullseye host. 0 Agent socket: inoperational (!!)The agent control use the port 8000 for communication. The server and the host are on the same network, the same virtualization cluster. 04. , I had to put the public hostname). 1 agent. deb Now the cmk-agent-ctl-daemon. 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. 5. Jun 17 10:57:15 nc systemd[1]: Stopped Checkmk agent controller daemon. You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. Specify the correct port when calling the registration command. Now the service is active and listening. 0p15. OS version: Ubuntu Server. Or if you have a specific role for a admin user, go to: Roles & permissions and see this permissions. root@waw1-monitor2:/omd# cmk-update-agent -v. Please provide me with the output of: systemctl status check-mk-agent. 1. 1. So if you make any changes to the config file then you need to reload configuration or restart the agent. gerhards. New replies are no longer allowed. 14 --site burana_modena --user automation --password XXXXXXX Registration. mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. If you want to use the agent in legacy mode, you need to disable cmk-agent-ctl in bakery rules. worked fine for me. Wie Sie den Agenten nutzen, erfahren Sie hier. The cmk-agent user was sucessfully created. 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. Wie soll ich nun aber auf Hunderten von Host TLS aktivieren?Hi, I have an issue with the registration of some agents on a site : when I run the cmk-agent-ctl register the process crashed on server-side after 10/15 seconds. 0 onwards), you have to add the following rights (internal name “general. For some reason I am no longer able to register my agents with TLS. com:8000/cmk. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. Dazu verwendet Checkmk teils eigene, teils bereits existierende Plugins. 02. OK, let’s figure out who is doing what. Contact an admin if you think this should be re-opened. 489987 +01:00] INFO [cmk_agent_ctl] srclib. 2 Delete all directories/files of the agent controller from the host. 1. The controller is executed under the cmk-agent user, which has limited privileges, e. CMK 2. 2 system. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. net -i STAR -P 'XXXXX' -U automation -H sys-vbr02Registration indeed is good. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. On all other hosts the cmk-agent-ctl-daemon fails and registration is not possible. When I try to register the agent on the host system with: cmk-agent-ctl register --hostname some_hostname --server 127. gerhards. You can learn how to use the agent here. exe . Just in case: We are prepared for cases where the agent controller cannot be started or. 6. example. The additional port 8000 seems necessary for creating TLS connection. 1. Checkmk Enterprise Edition 2. cmk-agent-ctl delete-all --enable-insecure-connections; cmk-agent-ctl status; cmk-agent-ctl register --hostname $(hostname -f) --server checkmk21-prod. If the server you want to monitor and register is the monitoring docker. The controller is executed under the cmk-agent user, which has limited privileges, e. Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. The controller is executed under the cmk-agent user, which has limited privileges, e. 6 Likes. socket failed. I am trying to register an agent installed on a Windows Server 2019. Home ; Categories ;Registration indeed is good. The 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. (We used cmk-agent-ctl proxy-register → deploy json to host → cmk-agent-ctl import . socket systemctl status cmk-agent-ctl-daemon. com:443 -i cmk --user automation . 0. ColinP November 12, 2022, 12:44pm 1. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. to switch your agent into SSL mode (and not. C:Program Files (x86)checkmkservice>cmk-agent-ctl. , I had to put the public hostname). 2 system. DOMAIN. 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. 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. Redirecting to /bin/systemctl reload xinetd. 0p20 Debian 11. CMK 2. How to Contact. gerhards. 0-1_all. MichaelI’m running 2. 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. WARNING: The Agent Controller is operating in an insecure mode! To secure the connection run cmk-agent-ctl register. Agent auf allen Monitored Hosts installiert. ss -tulpn | grep 6556 tcp LISTEN 0 4096 *:6556 : users:((“cmk-agent-ctl”,pid=425,fd=9)) On the. It seams you use a Debian system. 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. latest (2. 57. In case it is left out, the agent controller tries to query the port from the REST API. 2 release. 0p22 agent by running cmk-agent-ctl on the 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. 0p9. You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. to checkmk. Sie können zwei Checkmk-Appliances. 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. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. WalterH (Walter Hofstädtler) May 30, 2022, 5:42pm 31. We’ll come back to you to ask for. a re-register has the same effect, even with a cmk-agent-ctl delete and a “remove TLS registration”. when i executing the command remotely via powershell i’m. 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. 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. In your case doing proxy. socket systemctl disable cmk-agent-ctl-daemon. Hosts and CheckMK use a current Debian Bullseye and I use CheckMK Server and Client 2. Attempting to register at checkmk. 1. First, to add a new host to monitor we have to go to the Hosts menu in the WATO - Configuration menu on the left. 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. I am experiencing a problem with registering the agent: CMK version: 2. 0. 0b4-1 OS: Ubuntu 20. 2. 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. Here you can enter a host’s name simply in order to view the host’s configuration (e. folgenden Register Befehl benutzt. 0. Warning: This version breaks the agent receiver on IPv4-only Checkmk servers which have completely disabled IPv6 support on kernel level. 1. 1. Is there a switch to automatically confirm the registration prompt during the agent registration prompt for scripted (Ansible) provisioning? I’m currently doing this via a clunky method of echo y| (agentctl command)echo y|sudo cmk-agent-ctl register --hostname vmansible01 –server vmcheckmk01. Hello, I have a problem with enabling TLS in CheckMk 2. 4:8000 --site cmk --user cmkadmin --password password. 4 --server 1. Also, from the command line of the CentOS 7 server I can fetch the login. The exact command line is this: cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. I had to add the checkmk user again. Unfortunately, the problem remains: C:\WINDOWS\system32>"C:\Program Files (x86)\checkmk\service\cmk-agent-ctl. However, the certificate rolled out by the agent updater ruleset seems to be insufficient. The agent controller is well deployed and configured : “C:Program Files (x86)checkmkservicecmk-agent-ctl. 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. it --server 192. Please provide me with the output of: systemctl status check-mk-agent. 0. 0 2. no login shell, and is used only for data transfer. rs:41: Loaded config from. Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. 6. Hi, 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. 1 does not exist. From its very beginning, monitoring Windows servers has been one of the most important tasks performed by Checkmk. 02. /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. Diese werden auch als aktive Checks bezeichnet. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. de --site monitoring --user cmkadmin. mydomain. mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. You already entered the right command with openssl s_client -connect SLAVE01:443. Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. CMK version: 2. 1. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. 0. Registration indeed is good. I created the folder manually and changed ownership, and now the registration. cmk-agent-ctl register --hostname app-a. I’m running 2. 04 Command used for registration: cmk-agent-ctl. no login shell, and is used only for data transfer. 1. 0. Here is the deep link to the section in the manual:. 2. Registration indeed is good. 0. C:\ProgramData\checkmk\agent\config\cmk-update-agent. I’m using CMK 2. The Windows agent. gerhards. Release notes. cd /etc sudo rm -r check_mk cd /var/lib sudo rm -r check_mk_agent sudo rm -r cmk-agent cd /usr/lib sudo rm -r check_mk_agent sudo systemctl daemon-reload. If I try to register it with the command: cmk-agent-ctl register --detect-proxy --hostname FOO --server bla. After the installation everything worked. 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. service should work as expected. root@kerneltalks # service xinetd reload. Afterwards, port 6556 should be claimed by. 4. andreas-doehler (Andreas) January 8, 2023, 3:48pm 2. CMK Version: 2. After the installation everything worked. local --server 10. 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. 0:8282 --site cmk --user automation --password. OS version: Ubuntu Server. socket (failed failed) so I stopped and disabled them, then did systemctl daemon-reload and systemctl. domain. When trying to register the checkmk agent: Access is denied:. socket failed. In your case. The Agent Receiver tells the Agent Controller. cmk-agent-ctl register --hostname 1. Registration indeed is good. 0p15 OS version: TrueNAS SCALE 22. Here is what I have done roughly: Added and configured the agent rules. Waren die angegebenen Werte korrekt, werden Sie aufgefordert, die Identität der Checkmk-Instanz zu bestätigen, zu der Sie die Verbindung herstellen wollen. The added executable is called cmk-agent-ctl. 1 Like. The agent control use the port 8000 for communication. 234. Linux überwachen - Der neue Agent für Linux im Detail. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. I created the folder manually and changed ownership, and now the registration. , I had to put the public hostname). 0 the new Linux agent with the Agent Controller supports the registered, TLS-encrypted and compressed pull mode. g. 1. So if you make any changes to the config file then you need to reload configuration or restart the agent. XXX. Inside the container: root@9529f647cd27:/# omd version OMD - Open Monitoring Distribution Version 2. but this just ended in automation2 searching for automation accounts secrets, removed automation2. To register a host, users need the following permissions: Agent pairing. Now you need to register the agnet for TLS handshake. 1 using the Agent Controller. NOTE: A registered host will refuse all unencrypted connections. Checkmk. In case it is left out, the agent controller tries to query the port from the REST API. 1. 0. If the host is monitored by multiple sites, you must register to. DOMAIN. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. 2. If the host is monitored by multiple sites, you must register to all of them. 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. ” failed with this error: "Request failed with code 500 Internal Server Error: Internal Server Error"Danach erfolgte die Registrierung und der Update Befehl. I’ve installed the agent and succesfully register on OS windows 7x64 and. Dann hast du die Herangehensweise schon gefunden, wenn man die Zertifikate noch nicht im Griff hat. 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. But if cmk-agent-ctl cannot be started, access fails. 0-1_all. sh 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). 2. socket (failed failed) so I stopped and disabled them, then did systemctl daemon-reload and systemctl. After that I got the error: Version: 2. 4. You can learn how to use the agent here. But if cmk-agent-ctl cannot be started, access fails. 0b4_0.