2. ” 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. If the Agent Receiver accepts the request, registration is performed and a TLS-encrypted connection is established. If the host is monitored by multiple sites, you must register to all of them. 7 LTS Attempting to register windows host with TLS upon performing corresponding command cmk-agent-ctl. Anschließend installieren Sie den Agenten mit allen Konfigurationsdetails für den zu überwachenden Host durch einen abschließenden Aufruf des Agent-Updater-Plugins. latest (2. domain. py page via wget when I supply the correct credentials. exe register --trust-cert --hostname mein. e. 2. 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. exe to register the Agent Controller. 0 2. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. keine Login-Shell hat und nur zur Datenübertragung genutzt wird. XXX. 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). ” failed with this error: "Request failed with code 500 Internal Server Error: Internal Server Error" The registration then aborts, since we cannot continue without knowing the correct port. 0. 0 2. Using previous settings from /etc/cmk-update-agent. 0. This worked perfectly fine in CMK 2. 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. 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”). deb Now the cmk-agent-ctl-daemon. MichaelI’m running 2. exe' register -s checkmk. in the host run the register checkmk 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. 0p22 agent by running cmk-agent-ctl on the 2. Hi everyone, below is the output of the “cmk-agent-ctl. 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. net:8000--site cmk –user automation --password MYTOKEN sudo reboot (To verify it continues to work post-reboot) andreas-doehler August 15, 2022, 7:25pm 6. I created the folder manually and changed ownership, and now the registration. The user used for registering has admin privileges at checkmk and is able to see the global setting at the webui. 234. 4 --server 1. $ cmk-update-agent register $ cmk-agent-ctl register. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. 1. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. Release notes. CMK version:2. Hi everybody, i’am new to checkmk and trying to configure the agent but getting the same message, i couldn’t understand why. CMK version: 2. After a reboot the cmk-agent-ctl-daemon and the check-mk-agent. 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. Either related to the recent update to p12 or to a migration vom Ubuntu 20 to 22 (new server with new checkmk installation, restored site from backup). Die Registrierung klappt einfach nicht (die Hosts sind aber auch schon aus der 2. deb Monitored System (Host): Checkmk Agent version: 2. 1. Baked and signed the agent. 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. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. B. The cmk-agent user was sucessfully created. 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. 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…. example. OS version: Rocky Linux release 9. mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. The Windows agent. You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. 0. Das zu bestätigende Server-Zertifikat haben wir aus Gründen der. Checkmk Enterprise Edition 2. 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. service. The port can either be included in the server name argument ( -s ), or it can be left out. CMK Version: 2. 04 LTS. 1 gave 404 Not Found: Host 127. Install the suitable Checkmk agent on the server you want to monitor and add the server as a host in Checkmk. The cmk-agent user was sucessfully created. g. From its very beginning, monitoring Windows servers has been one of the most important tasks performed by Checkmk. 0 adds the Agent Controller and new features to the agent program. The Linux agent of Checkmk version 2. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. The agent control use the port 8000 for communication. com--site FOO --user BAR -. Hello, I updated my CheckMK installation to firmware 1. 1. Das funktioniert. check_für das Abfragen von Webseiten. com--site FOO --user BAR --password FOO The new agents at 2. OS version: Ubuntu Server. 489987 +01:00] INFO [cmk_agent_ctl] srclib. 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. exe' register -s checkmk. : checkmk:~# systemctl status cmk-agent-ctl-daemon. socket. The agents' Agent Controller makes a request for registration to the server’s Agent Receiver, transmitting the data required to create the host. com. Address: 401 Hartwig Court, 1208 Wharf Street, Victoria, BC, V8W 2P5, CanadaCTP Distributors. You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. net -i STAR -P 'XXXXX' -U automation -H sys-vbr02The hosts agent supports TLS, but it is not being used. Install the suitable Checkmk agent on the server you want to monitor and add the server as a host in Checkmk. domain. deb Now the cmk-agent-ctl-daemon. CMK 2. socket systemctl status cmk-agent-ctl-daemon. WalterH (Walter Hofstädtler) May 30, 2022, 5:42pm 31. 1 does not exist. On every host I register that way I don’t get any agent data because of the Issue Host is registe. 2 Delete all directories/files of the agent controller from the host. 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. 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. The controller is executed under the cmk-agent user, which has limited privileges, e. Dann hast du die Herangehensweise schon gefunden, wenn man die Zertifikate noch nicht im Griff hat. TLD -i SITE-NAME -U USERNAME This worked perfectly fine in CMK 2. gerhards. The cmk-agent user was sucessfully created. Hi, Some days ago i was testing this software, do a few tests and lately installed on a VM runing linux mint 20. 2 system. Just in case: We are prepared for cases where the agent controller cannot be started or. service You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. 0-1_all. In your case. The Linux agent of Checkmk version 2. Registration indeed is good. gerhards. DOMAIN. 1. Did not fix it. service: Scheduled restart job, restart counter is at 2. 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. 1 Like. But if cmk-agent-ctl cannot be started, access fails. local:8000 -s checkmk. OS version: Rocky Linux release 9. Hello. Registered and installed a Let’s Encrypt certificate using certbot; I can now access the web UI without a problem using but after setting up the host I can’t install an agent using the following command: cmk-agent-ctl register -H -s monitoring. 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. Für Linux habe ich cmk-agent-ctl register --hostname xxx --server. rs:14: starting [2023-02-10 12:54:18. 168. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. exe' register -s checkmk. 2. To register a host, users need the following permissions: Agent pairing. Welcome to Checkmk. Please provide me with the output of: systemctl status check-mk-agent. rs:41: Loaded config from. 1 i’m trying to automate the process of registering our updated windows hosts to thee monitoring for tls encryption. 0 (Blue Onyx) [root@CHECKMK services]# cmk-agent-ctl. , I had to put the public hostname). 04. After a reboot the cmk-agent-ctl-daemon and the check-mk-agent. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. I try with: cmk-agent-ctl register --hostname MYHOST --server CMKHOST --site MYSITE --user cmkadmin --password ‘MYPASSWORD’ Then I get the. The controller is executed under the cmk-agent user, which has limited privileges, e. when i executing the command remotely via powershell i’m. In your case doing proxy. 45. CMK 2. 1. After a reboot the cmk-agent-ctl-daemon and the check-mk-agent. 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. 1. cmk-agent-ctl delete-all --enable-insecure-connections; cmk-agent-ctl status; cmk-agent-ctl register --hostname $(hostname -f) --server checkmk21-prod. 1. It would be good if after you run the cmk-agent-ctl register you get a positive validation in the command output like OK or Registered! thanks for your support. 1. XXX. Could you please check who is claiming port 6556?. 489987 +01:00] INFO [cmk_agent_ctl] srclib. 0-1_all. deb. The cmk-agent user was sucessfully created. 1 i’m trying to automate the process of registering our updated windows hosts to thee monitoring for tls encryption. The exact command line is this: cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. Our Manufacturers. Currently, only systemd on the x86_64 platform is. 2 system. Could you please check who is claiming port 6556? ss -tulpn | grep 6556 This should be cmk-agent-ctl in daemon mode. service should work as expected. 5. We strongly recommend to enable TLS by registering the host to the site (using the cmk-agent-ctl register command on the monitored host). 04. B. It has to match the actual hostname used by the Checkmk server, found under “Setup” > “Hosts”. 0. cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. de --server monitor. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. Version: 2. 0p9. Ausgabe ist: Local: Hier scheint alles ok zu seine, nur taucht der Host im. exe" register --hostname s3mo-tape. 2 system. 0. en. 0. mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. The cmk-agent user is created during the installation of the agent. no login shell, and is used only for data transfer. In your case doing proxy. 40. If you want to use the agent in legacy mode, you need to disable cmk-agent-ctl in bakery rules. 02. 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. As suggested in another post i read i checked:-that port 8000 is open-omd config show | grep AGENT_RECEIVER show port 8000The registration then aborts, since we cannot continue without knowing the correct port. Registration indeed is good. Die Registrierung der Agents in der Version 2. WARNING: The Agent Controller is operating in an insecure mode! To secure the connection run cmk-agent-ctl register. 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. domain. 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. The windows installer supports the following command line arguments: /S - runs the installer silently /D= - sets the default installation directory. exe' register -s checkmk. 5. 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. g. net -i STAR -P 'XXXXX' -U automation -H sys-vbr02It seams you use a Debian system. 1. a re-register has the same effect, even with a cmk-agent-ctl delete and a “remove TLS registration”. If you use the bakery, the agent was baked with enabled cmk-agent-ctl. You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. 0-1_all. 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. If I try to register it with the command: cmk-agent-ctl register --detect-proxy --hostname FOO --server bla. 0 onwards), you have to add the following rights (internal name “general. andreas-doehler (Andreas) January 8, 2023, 3:48pm 2. 1. 4. 2. C:Program Files (x86)checkmkservice>cmk-agent-ctl. cmk-agent-ctl register --hostname myhost --server checkmk. Create MSI file for windows 2019 server. rs:41: Loaded config from. CMK version: 2. Registered and installed a Let’s Encrypt certificate using certbot; I can now access the web UI without a problem using but after setting up the host I can’t install an agent using the following command: cmk-agent-ctl register -H -s monitoring. Either import the self signed certificate on this server paperless-ngx or use the same command with port. 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. it --server 192. I am trying to register an agent installed on a Windows Server 2019. service Ikkarus13 (Sascha Kunimünch) May 25, 2022, 1:18pm. 0p20 Ubuntu 20. com:443 -i cmk --user automation . 234. no login shell, and is used only for data transfer. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. Hello. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. 0. pem. To register a host, users need the following permissions: Agent pairing. You can learn how to use the agent here. Monitoring Windows - The new agent for Windows in detail. net -i STAR -P 'XXXXX' -U automation -H sys-vbr02Yes I did use the” cmk-agent-ctl register command, after that I got this message. 0p23 of Checkmk is ready for download. You can either delete that file or remove xinetd altogether. 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. As suggested in another post i read i checked:-that port 8000 is open-omd config show | grep AGENT_RECEIVER show port 8000It seams you use a Debian system. The controller is executed under the cmk-agent user, which has limited privileges, e. TLD -i SITE-NAME -U USERNAME This worked perfectly fine in CMK 2. Installing an agent and starting monitoring was straightforward - everything happens over SSH. Even with custom checks. 0. server --site Main --user cmkadmin --verbose erscheint folgendes: image 1902×257 114 KB. In checkmk for the host service got below warning. domain. You have three options here: Make the REST API call work. 0. 0p15. TLD -i SITE-NAME -U USERNAME. 57. 0. net -i STAR -P 'XXXXX' -U automation -H sys-vbr02 Apparently I’m too stupid to find the correct call for agent registration via REST API in any documentation. root@kerneltalks # service xinetd reload. 0. Checkmk. But if cmk-agent-ctl cannot be started, access fails. cmk-update-agent register -v -H COMPUTERNAME -U register -S xxxxxxxxxxxxxxxxx. 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. Please execute with sufficient permissions (maybe try 'sudo'). 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. If it is systemd please give us the output of systemctl --version. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. The hostname “localhost” was wrong. The systemd is version 246. Bei der Registrierung wurde in den Anleitungen von chekmk mit dem “automation” User gearbeitet, ich habe es mit dem cmkadmin gemacht was bei den. 10. Update: Nervermind. Bei der Registrierung der Agents ergibt sich bei beiden Server folgender Fehler: <HOST>:~ # cmk-agent-ctl register --hostname <HOSTNAME> --server 192. 0p15 OS version: TrueNAS SCALE 22. New replies are no longer allowed. 1But if cmk-agent-ctl cannot be started, access fails. rs:14: starting [2023-02-10 12:54:18. d, only the check-mk-agent can be found: [root@jumphost]# cmk-agent-ctl register --hostname myclient . pem. Welcome to Checkmk. 6. service: Scheduled restart job, restart counter is at 2. It has to match the actual hostname used by the Checkmk server, found under “Setup” > “Hosts”. And with the CMC: OMD [mysite]:~$ cmk -O. 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). This port can be found out via omd config > Basics > AGENT_RECEIVER_PORT Of course, this port has to be exposed for the. As suggested in another post i read i checked:-that port 8000 is open-omd config show | grep AGENT_RECEIVER show port 8000cmk-agent-ctl register --server cmkserver:443 --trust-cert --site cmksite --user username --password password --hostname monitoringhost On Debian 11 if got the following outputCMK version: 2. service then restart xinitd and tell me about the output of ss -tulpn | grep 6556. 0 adds the Agent Controller and new features to the agent program. CMK 2. Checkmk Community CMK Agent Controller not working (CentOS 7) - CMK 2. mydomain. The registration works. cre root@9529f647cd27:/# omd sites SITE VERSION COMMENTS cmk 2. Open the terminal that you want to monitor on your Linux server. The cmk-agent user is created during the installation of the agent package. 1. CMK 2. 02. If the host is monitored by multiple sites, you must register to all of them. Going from one patch level to another one (like from p16 to p20) basically is: dpkg -i checkmk…new. The registration works. it --server 192. g. register ^. exe – register --trust-cert’ USAGE: cmk-agent-ctl. service. Inside the container: root@9529f647cd27:/# omd version OMD - Open Monitoring Distribution Version 2. I am trying to register an agent installed on a Windows Server 2019. 0-1_all. TLD -i SITE-NAME -U USERNAME This worked perfectly fine in CMK 2. 1 Like. 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. After that I got the error: Version: 2. socket'. CMK version: 2. 0p24 to 2. The controller is executed under the cmk-agent user, which has limited privileges, e. socket → /lib/systemd/system/check-mk-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. Hello, I have an issue with the registration of the host on a server : the agent-receiver on server-side is always crashing around 15/20 seconds and restarts. Diese werden auch als aktive Checks bezeichnet. cmk-agent-ctl register --hostname app-a. The controller is executed under the cmk-agent user, which has limited privileges, e. This can be problematic if you are monitoring the same host from a site running Checkmk version 2. Register. mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. Since the machine you’re trying to monitor is still 2. cme and I’m no longer able to register new hosts with an automation user “cmkautomation” that I created a while ago (with role “agent_registration”). 488899 +01:00] INFO [cmk_agent_ctl] srcmain. I accept the certificate. If there are leftovers from 2. 04. 2. I had to add the checkmk user again. I’m using CMK 2. Fixed that with create a new User “automation” and created the file automation. So if you make any changes to the config file then you need to reload configuration or restart the agent. Nun hast Du 2 Möglichkeiten: Entweder den controller für TLS registrieren (cmk-agent-ctl register -h für die Hilfe) oderCheckmk Enterprise Edition 2. Please provide me with the output of: systemctl status check-mk-agent. Der Agent Controller cmk-agent-ctl kümmert sich um den Transport der vom Agentenskript gesammelten Daten. 1 Like. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. In case it is left out, the agent controller tries to query the port from the REST API. cmk-agent-ctl. I am experiencing a problem with registering the agent: CMK version: 2. NOTE: A registered host will refuse all unencrypted connections. service: Scheduled restart job, restart counter is at 2. error: The subcommand ‘register --trust-cert’ wasn’t recognized Did you mean ‘register’? If you believe you received this message in error, try re-running with ‘cmk-agent-ctl. Please provide me with the output of: systemctl status check-mk-agent. user -vv INFO [cmk_agent_ctl] starting. Now the cmk-agent-ctl-daemon. Monitoring Linux - The new agent for Linux in detail. 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. „TLS is not activated on monitored host (see details)“. local:8000 -s checkmk. In your case doing proxy. Now the service is active and listening. 5. C:\ProgramData\checkmk\agent\config\cas\all_certs. You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. 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. {"payload":{"allShortcutsEnabled":false,"fileTree":{"agents":{"items":[{"name":"cfg_examples","path":"agents/cfg_examples","contentType":"directory"},{"name. 0. Checkmk. This can be problematic if you are monitoring the same host from a site running Checkmk version 2. 2 release. service: Scheduled restart job, restart counter is at 2. DOMAIN. exe" status It also seems that you have multiple sites on your Checkmk server based on port 8001 in the response. The controller is executed under the cmk-agent user, which has limited privileges, e. 1 Like.