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. In your case. 2. example. 0. 1. We strongly recommend to enable TLS by registering the host to the site (using the `cmk-agent-ctl register` command on the monitored host). DOMAIN. exit # leave the site user shell. g. 40. 14 --site burana_modena --user automation --password XXXXXXX Registration. The docker run command from the documentation is using -p 8000:8000 to bind that port externally. root@waw1-monitor2:/omd# cmk-update-agent -v. Tested adding both a firewall run on the 2019 server for both 6556 in and out. sh script. 14 --site burana_modena --user automation -. With telnet i can connect to the agent from the OMD server. gerhards. check_mk agent runs on top of xinetd service in Linux. deb Now the cmk-agent-ctl-daemon. 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. 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. sh script. exe register --trust-cert --hostname mein. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. My server proxmox follow the guide from checkmk, where create the user, policy, open port 6556, special agent. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. Please provide me with the output of: systemctl status check-mk-agent. 168. 0p11 Agent socket: inoperational (!!) Version: 2. But before we start with the actual. 2. The controller is executed under the cmk-agent user, which has limited privileges, e. 0. 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). rs:14: starting [2023-02-10 12:54:18. socket (failed failed) so I stopped and disabled them, then did systemctl daemon-reload and systemctl. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. 04 Command used for registration: cmk-agent-ctl. If it is xinetd remove the. server --server mein. 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. 489987 +01:00] INFO [cmk_agent_ctl] srclib. 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. The cmk-agent user was sucessfully created. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. 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. 5. omd su mysite. 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. Registration indeed is good. If you use the bakery, the agent was baked with enabled cmk-agent-ctl. B. socket systemctl status cmk-agent-ctl-daemon. com. In your case doing proxy. CMK Version: 2. " Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. 1. You can confirm this by telnetting from your OMD site to the monitored server on tcp port 6556:Checkmk Enterprise Edition 2. root@kerneltalks # service xinetd reload. 0b4-1_all. 0p9. 1 does not exist. 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. OS version: TrueNAS SCALE 22. I created the folder manually and changed ownership, and now the registration. CMK version: 2. TLD -i SITE-NAME -U USERNAME This worked perfectly fine in CMK 2. 0 2. 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. TLD -i SITE-NAME -U USERNAME This worked perfectly fine in CMK 2. 2 system. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. 5. com. 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. domain. Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. THaeber • 5 mo. 1. Thank you very much to assist me on this way! system (system) Closed September 26, 2023, 4:01pm 9. 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. CMK version: 2. d, only the check-mk-agent can be found: [root@jumphost]# cmk-agent-ctl register --hostname myclient \. B. XXX. Hello. (We used cmk-agent-ctl proxy-register → deploy json to host → cmk-agent-ctl import . DOMAIN. „TLS is not activated on monitored host (see details)“. Anders (Anders) November 27, 2022, 4:25pm 1 CMK version: 2. exe register --hostname xxx --server checkmk:8000 --site monitoring --user automation --password xxx That seemed to have worked great thanks “jwiederh”. You have three options here: Make the REST API call work. 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. The cmk-agent user is created during the installation of the agent. 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. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. 2. 2 system. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. DOMAIN. The cmk-agent user is created during the installation of the agent. 0p6. Haven’t done anything else with the install yet. This might be a bug. 1. Der Linux-Agent der Checkmk-Version 2. to checkmk. Now the service is active and listening. 75:8000 --site robot --user cmkadmin --password password -vv. 0. ago. 7. 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. OS version: Ubuntu Server. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. Now you need to register the agnet for TLS handshake. You can learn how to use the agent here. cmk-agent-ctl register --hostname 1. 1. To register a host, users need the following permissions: Agent pairing. 0-1_all. 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. omd stop mysite. Are you trying to register the 2. This was not expected as I created rules in “Agent controller” {'agent_ctl_enabled': True}. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. Welcome to the Checkmk User Guide. 1. TLD -i SITE-NAME -U USERNAME This worked perfectly fine in CMK 2. The agent control use the port 8000 for communication. socket systemctl status cmk-agent-ctl-daemon. The agents' Agent Controller makes a request for registration to the server’s Agent Receiver, transmitting the data required to create the host. The challenge is registering an agent, i. ” failed with this error: "Request failed with code 500 Internal Server Error: Internal Server Error"The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. The cmk-agent user was sucessfully created. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. 1. no login shell, and is used only for data transfer. I am experiencing a problem with registering the agent: CMK version: 2. In your case. Einen auf den Server auf der Docker Service läuft (OpenSuse Tumbleweed), sowie einen Windows Server 2016. Use the cmk-agent-ctl register command to register. DOH I forgot I had set a custom port for agent receiver as i had a conflict for 8000 on my docker host. 0 adds the Agent Controller and new features to the agent program. hardware:~#] cmk-agent-ctl. 1. 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. ). Checkmk Community Trouble after upgrading to 2. I installed the CheckMK Agent on a TrueNAS SCALE host. Upon first try, “cmk-agent-ctl register. 4. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. XXX. socket), aborting``` If I als run the daemon: ```cmk-agent-ctl daemon &``` It starts responding to status command, but still won't register the node: ```root@adfb306b5d58:/# cmk-agent-ctl status Version: 2. Or if you have a specific role for a admin user, go to: Roles & permissions and see this permissions. 234. If the Agent Receiver accepts the request,. You have three options here: Make the REST API call work. I feel like I’m missing something real obvious. The cmk-agent user was sucessfully created. 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. Please provide me with the output of: systemctl status check-mk-agent. 2 system. 0b4_0 raw OS: Ubuntu 20. Monthly Promotions Product Specials and Monthly Flyers Emailed Right to You! Online Ordering Check Price and. Please execute with sufficient permissions (maybe try 'sudo'). 0. cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. 0p6. Our Manufacturers. 0-1_all. andreas-doehler (Andreas) January 8, 2023, 3:48pm 2. Host can telnet on port 8000 of the server and a curl request works. In any of these cases I can replace localhost with the actual hostname as well and the results don’t change (they’re identical). Yes, it might seem weird. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. domain. Redirecting to /bin/systemctl reload xinetd. cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. $ cmk-update-agent register $ cmk-agent-ctl register. exe . ColinP November 12, 2022, 12:44pm 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. no login shell, and is used only for data transfer. 0. 0 or earlier. ). The registration is done using the Agent Controller cmk-agent-ctl, which provides a command interface for configuring the connections. 1. exe" register --hostname s3mo-tape. Agent pairing; Read access to all hosts and foldersSince Checkmk version 2. 0b4-1 OS: Ubuntu 20. This is the reason: (sorry, article is currently in translation)You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. Diese werden auch als aktive Checks bezeichnet. 0. Distribute below files from new baked agent to all agents that were baked with expired certificate. Copy the cmk-update-agent binary or the cmk_update_agent. g. 0p15. 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). - it goes from CRIT → OK after a while or sometimes message comes with with service. The registration is done using the Agent Controller cmk-agent-ctl, which provides a command interface for configuring the connections. 1 Like. latest (2. 0. Can you verify this? You can use the following command for this, "C:Program Files (x86)checkmkservicecmk-agent-ctl. service then restart xinitd and tell me about the output of ss -tulpn | grep 6556. gerhards. Reloading xinetd Activating systemd unit 'check-mk-agent. d, only the check-mk-agent can be found: [root@jumphost]# cmk-agent-ctl register --hostname myclient . 0p22 agent by running cmk-agent-ctl on the 2. After a reboot the cmk-agent-ctl-daemon and the check-mk-agent. The Hostname is the familiar name that Checkmk will use for the monitoring. no login shell, and is used only for data transfer. en. NOTE: A registered host will refuse all unencrypted connections. 5. 0 2. exe' register -s checkmk. And now. This might be a bug. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. CMK 2. For this, I’m running following command on client # cmk-agent-ctl register --hostname `hostname -f` --server mon. 1. Er wird unter dem Benutzer cmk-agent ausgeführt, der nur beschränkte Rechte besitzt, z. Create MSI file for windows 2019 server. This can be problematic if you are monitoring the same host from a site running Checkmk version 2. XXX. com:443 --site howtoforge --user cmkadmin So before you take care of the configuration itself, enable the Activation of automatic agent updates option under Setup > General > Global Settings > Automatic Agent Updates: To implement the updates, follow these steps: First open Setup > Agents > Windows, Linux, Solaris, AIX and select Agents > Automatic updates: See Prerequisites for a list. 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. 57. 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…. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. 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”). secret with the password as String. 2. 0. Ikkarus13 (Sascha Kunimünch) May 30, 2022, 8:00am 1. service: Scheduled restart job, restart counter is at 2. I think the docs aren’t clear on what should be done if ss -tulpn | grep 6556 shows that systemd or xinetd are listening on 6556 instead of cmk-agent-ctl, and what one should do to have cmk-agent-ctl working. deb Now the cmk-agent-ctl-daemon. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. slice (loaded active) and check_mk. service - Checkmk agent controller daemonIt seams you use a Debian system. 0p20 Debian 11 Hi everyone, below is the output of the “cmk-agent-ctl. socket failed. service: Scheduled restart job, restart counter is at 2. 1. 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. This might be a bug. 0 last week. 0/26. exe” register. 1 gave 404 Not Found: Host 127. 1. rs:14: starting [2023-02-10 12:54:18. 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. gawainsr2 August 15, 2022, 5:52pm 1. Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. 1 Like. 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. 04 LTS. 1. This morning all Windows Agents were suddenly no longer registered. socket failed. You also need a --hostname flag, like --hostname test. 0p20 Debian 11. 0, that will not be possible. 0 2. rs:41: Loaded config from. XXX. The cmk-agent user is created during the installation of the agent. 1. You’ll also need to do something like cmk-agent-ctl register. Now you need to register the agnet for TLS handshake. 1. 0. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. cmk-agent-ctl delete-all --enable-insecure-connections; cmk-agent-ctl status; cmk-agent-ctl register --hostname $(hostname -f) --server checkmk21-prod. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. 0. Hi @P. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. Registration indeed is good. the check-mk-agent is running (in xinetd mode) - trying to register a client is not possible because the cmk controller is looking for a socket (systemd) [root@jumphost]# cmk-agent-ctl status Version: 2. service should work as expected. I am trying to register an agent installed on a Windows Server 2019. 4. cmk-agent-ctl register --server cmkserver:443 --trust-cert --site cmksite --user username --password password --hostname monitoringhost On Debian 11 if got the following outputTo register the agent, I ran: sudo cmk-agent-ctl register --hostname localhost --server localhost:8001 --site cmk --user cmkadmin That gives: > sudo cmk-agent-ctl status Version: 2. Could you please check who is claiming port 6556? ss -tulpn | grep 6556 This should be cmk-agent-ctl in daemon mode. For a user to be able to do the cmk-agent-ctl register, which is needed to enable the TLS encryption (available from 2. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. 0. register ^. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. a re-register has the same effect, even with a cmk-agent-ctl delete and a “remove TLS registration”. com--site FOO --user BAR --password FOO The new agents at 2. The cmk-agent user was sucessfully created. Explcit host: xxx. Specify the correct port when calling the registration command. Auto-confirmation for cmk-agent-ctl register command? General. ╰─$ sudo cmk-agent-ctl status Version: 2. Please provide me with the output of: systemctl status check-mk-agent. I had to add the checkmk user again. From here click Create new host. I am not able to debug the cmk-agent-ctl since it is in. 0 onwards), you have to add the following rights (internal name "general. CMK Version: CRE 2. B. 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. 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. g. 2. Checkmk. 1. 0 OS Version: Appliance 1. 0-1_all. How to Contact. ╰─$ sudo cmk-agent-ctl status Version: 2. gerhards. 0p19 CRE OS version: Debian 11. Hi everybody, i’am new to checkmk and trying to configure the agent but getting the same message, i couldn’t understand why. I am trying to register an agent installed on a Windows Server 2019. service1. service should work as expected. focal_amd64. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. 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. com --site FOO --user BAR --password FOO. The Agent Receiver tells the Agent Controller. 0p16-1. but this just ended in automation2 searching for automation accounts secrets, removed automation2. If the Agent Receiver accepts the request, registration is performed and a TLS-encrypted connection is established. exe to register the Agent Controller. 4:8000 --site cmk --user cmkadmin --password password. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. 1. 0. Monitoring Linux - The new agent for Linux in detail. service You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. 0p20 Debian 11. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. Afterwards, port 6556 should be claimed by. Upon first try, “cmk-agent-ctl register. 2. The agent control use the port 8000 for communication. net -i STAR -P 'XXXXX' -U automation -H sys-vbr02It seams you use a Debian system. This worked perfectly fine in CMK 2. Password: explicit. g. cfg file, the registration information of the agent controller stays behind on uninstallation. 2. So if you make any changes to the config file then you need to reload configuration or restart the agent. com:8000 --site itbetrieb --user automation --password xxxxxxxx --trust-cert -vv Version: 2. I’m running 2. pem. CMK version: 2. cmk-agent-ctl register --hostname localhost --server server:8000 --site mysite --user cmkadmin -vv.