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). Die Registrierung klappt einfach nicht (die Hosts sind aber auch schon aus der 2. In your case. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. So, get this from “omd config show” on your CMK. ” 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. 0-1_all. 0p9. This can be problematic if you are monitoring the same host from a site running Checkmk version 2. Sie können sich mit cmk-agent-ctl help die Kommandohilfe anzeigen lassen, auch spezifisch für die verfügbaren Subkommandos, z. XXX. ago. 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. TLD -i SITE-NAME -U USERNAME This worked perfectly fine in CMK 2. Agent Registration (Pairing) for TLS Encryption. exe' register -s checkmk. If there are leftovers from 2. 5 LTS I have had no issues registering the agent on internal servers, but I have two servers hosted in the cloud which are fully connected and have appropriate NAT rules and local firewall rules to allow the communication, but registering results in the error: ERROR [cmk_agent_ctl] Operation. Since the machine you’re trying to monitor is still 2. mydomain. gerhards. 6. it --server 192. 0 adds the Agent Controller and new features to the agent script. 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. json to keep the FW as closed as possible – I cannot test it with the bakery, we sadly have to use CRE+Puppet) kai226 June 14, 2023, 11:57am 4. The port can either be included in the server name argument ( -s ), or it can be left out. Upon first try, “cmk-agent-ctl register. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. Ausgabe ist: Local: Hier scheint alles ok zu seine, nur taucht der Host im. 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. 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. jlagendijk (Jesse) June 2, 2022, 10:04am 1. Agent Registration (Pairing) for TLS Encryption. exe . socket systemctl status cmk-agent-ctl-daemon. latest (2. omd su mysite. 14 --site burana_modena --user automation -. sh script. Bei einem Netzwerkdienst liegt es nahe, den Dienst über das Netzwerk abzufragen und über diesen Weg auch zu überwachen. Die entsprechenden Optionen können Sie sich beim Aufruf von cmk-update-agent register --help anzeigen lassen. 0. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. B. 1. Release notes. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. Der für die verschlüsselte Kommunikation mit dem Checkmk-Server zuständige Agent Controller cmk-agent-ctl. 0 2. 2 system. Bulk Consent Manager. If the host is monitored by multiple sites, you must register to all of them. Finally, in Bake agent packages, activate. 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. Reload check_mk configuration using below command –. cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. no login shell, and is used only for data transfer. This can be problematic if you are monitoring the same host from a site running Checkmk version 2. 0 onwards), you have to add the following rights (internal name "general. 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. The cmk-agent user is created during the installation of the agent. 0, that will not be possible. Installing an agent and starting monitoring was straightforward - everything happens over SSH. 1:8655 --site cmk --user cmk_admin. service should work as expected. 1. exe – register --trust-cert’ USAGE: cmk-agent-ctl. service systemctl disable cmk-agent-ctl-daemon. exe” register --site yousitename --server yourcmkserver --user automation --hostname windows_box_hostname --password 1. In your case. The new TLS feature is need to register with cmk-agent-ctl register command. Das wurde erst mit b3 geändert, gilt aber nur für die erste Installation. Bei einem Netzwerkdienst liegt es nahe, den Dienst über das Netzwerk abzufragen und über diesen Weg auch zu überwachen. This option is only available in the Cloud Edition. socket failed. „TLS is not activated on monitored host (see details)“. TLD -i SITE-NAME -U USERNAME This worked perfectly fine in CMK 2. DOH I forgot I had set a custom port for agent receiver as i had a conflict for 8000 on my docker host. This topic was automatically closed 365 days after the last reply. 04 Command used for registration: cmk-agent-ctl. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. I had to add the checkmk user. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. 0/26. CMK 2. sh script. 0p16-1. 1. I created the folder manually and changed ownership, and now the registration. OS version: Rocky Linux release 9. I created the folder manually and changed ownership, and now the registration. DOMAIN. Unfortunately, the problem remains: C:WINDOWSsystem32>"C:Program Files (x86)checkmkservicecmk-agent-ctl. 0. Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. cmk-update-agent register -s monitor2 -i mysite -H monitor2 -U cmkadmin. pem. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. The agent is running and I get all of the. 1. 2. rs:14: st… As mentioned in another thread, you actually ran into a newly implemented CSR version check that’s. You can analyze this by having a look at the server’s certificate chain. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. 1. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. service Ikkarus13 (Sascha Kunimünch) May 25, 2022, 1:18pm. 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. Wie Sie den Agenten nutzen, erfahren Sie hier. cfg file, the registration information of the agent controller stays behind on uninstallation. The hostname “localhost” was wrong. Agent pairing; Read access to all hosts and foldersSince Checkmk version 2. What I already tried: I tried only listening on ports 80 and 443 for caddy, with {"serverDuration": 24, "requestCorrelationId": "464b55cee9f74460a402ac4a40d2b489"} Checkmk Knowledge Base {"serverDuration": 18, "requestCorrelationId. exe register --trust-cert -vv” command: [2023-02-10 12:54:18. After that I got the error: Version: 2. to switch your agent into SSL mode (and not. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. 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. 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. Without register, the communication will handle also via port 8000, so you need to clarify if this port is open. TLD -i SITE-NAME -U USERNAME This worked perfectly fine in CMK 2. Sehr beliebt ist z. 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. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. cmk-agent-ctl register -H ovhxxx -s publicIP:8194 -i cmk -U automation. B. cmk-update-agent –v. 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). CMK version: 2. Hello David, unfortunately --trust-cert changes nothing. Can you verify this? You can use the following command for this, "C:Program Files (x86)checkmkservicecmk-agent-ctl. Are you trying to register the 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. If the Agent Receiver accepts the request, registration is performed and a TLS-encrypted connection is established. The port can be different in your case. NOTE: A registered host will refuse all unencrypted connections. But if cmk-agent-ctl cannot be started, access fails. 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. cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. exe greift auf ihn zu. 6. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. Using previous settings from /etc/cmk-update-agent. 0p19 CRE OS version: Debian 11. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. Hi everybody, i’am new to checkmk and trying to configure the agent but getting the same message, i couldn’t understand why. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. Monitoring Linux - The new agent for Linux in detail. redacted. 6 Likes. 0 then you will find the systemd unit files inside. 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. 0p20 Debian 11. Einen auf den Server auf der Docker Service läuft (OpenSuse Tumbleweed), sowie einen Windows Server 2016. check_mk agent runs on top of xinetd service in Linux. DOMAIN. TLD -i SITE-NAME -U USERNAME This worked perfectly fine in CMK 2. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. Use the cmk-agent-ctl register command to register. 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. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. Please provide me with the output of: systemctl status check-mk-agent. B. 2. socket systemctl status cmk-agent-ctl-daemon. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. socket failed. 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. Linux überwachen - Der neue Agent für Linux im Detail. 1 gave 404 Not Found: Host 127. 1. evilguy January 8, 2023, 7:53pm 3. ColinP November 12, 2022, 12:44pm 1. Baked and signed the agent. CMK 2. Please provide me with the output of: systemctl status check-mk-agent. 2. Diese werden auch als aktive Checks bezeichnet. 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 2. example. Even with custom checks. cee Ubuntu 16. Yes I did use the” cmk-agent-ctl register command, after that I got this message. 3. 0/26. slice (loaded active) and check_mk. If the host is monitored by multiple sites, you must register to all of them. CMK Version: 2. 0 Zeiten registriert) Registrierung über den Servernamen “checkmk” meines CheckMK Servers und der Instanz “lexx”. socket failed. Hello, I updated my CheckMK installation to firmware 1. Become a Dealer. 1. This one is listening at port 8000. domain. no login shell, and is used only for data transfer. From its very beginning, monitoring Windows servers has been one of the most important tasks performed by Checkmk. Only after I manually ran “cmk-agent-ctl register” it listened again. 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. You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. WalterH (Walter Hofstädtler) May 30, 2022, 5:42pm 31. Hello. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. I created the folder manually and changed ownership, and now the registration. Currently, only systemd on the x86_64 platform is. Please execute with sufficient permissions (maybe try 'sudo'). For example, the registration crashed with "500 Internal Server Error" for users without the permission "Write access to all hosts and folders". DOMAIN. 1. deb Now the cmk-agent-ctl-daemon. , I had to put the public hostname). The controller is executed under the cmk-agent user, which has limited privileges, e. 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. 5. 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. service: Scheduled restart job, restart counter is at 2. 1. cmk-agent-ctl. There were some user permission issues with the agent registration (cmk-agent-ctl register. Das funktioniert und auch eventuelle Fehler: TLS is not activated on monitored host verschwinden. Hi @robin. 0. Bei der Registrierung der Agents ergibt sich bei beiden Server folgender Fehler: <HOST>:~ # cmk-agent-ctl register --hostname <HOSTNAME> --server 192. 0p22 agent by running cmk-agent-ctl on the 2. For a user to be able to do the cmk-agent-ctl register, which is needed to enable the TLS encryption (available from 2. 10. We strongly recommend to enable TLS by registering the host to the site (using the `cmk-agent-ctl register` command on the monitored host). Segmentation fault (core dumped) The same result also with the all needed parameters for the registration. If you use the bakery, the agent was baked with enabled cmk-agent-ctl. The agents' Agent Controller makes a request for registration to the server’s Agent Receiver, transmitting the data required to create the host. The agent controller is well deployed and configured : “C:Program Files (x86)checkmkservicecmk-agent-ctl. 0p15. net -i STAR -P 'XXXXX' -U automation -H sys-vbr02It seams you use a Debian system. com. C:Program Files (x86)checkmkservice>cmk-agent-ctl. com:443 -i cmk --user automation . service. 4. You already entered the right command with openssl s_client -connect SLAVE01:443. 0p13. 0. @SeyRyuu I have potential good news for you, then… I resolved this yesterday . service should work as expected. 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”). 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. If you use the bakery, the agent was baked with enabled cmk-agent-ctl. gawainsr2 August 15, 2022, 5:52pm 1. 2. One of my hosts is producing this error, while most others register fine: root@sshgateway:~# cmk-agent-ctl register --hostname gateway. system (system) Closed October 17, 2023, 5:42am. The Agent Receiver tells the Agent Controller. service: Start request repeated too quickly. Install the suitable Checkmk agent on the server you want to monitor and add the server as a host in Checkmk. Register. This might be a bug. 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. 0. 4. 0b4-1 OS: Ubuntu 20. g. agent_pairing”) to his/her role. For this, I’m running following command on client # cmk-agent-ctl register --hostname `hostname -f` --server mon. 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 server? You have to run the cmk-agent-ctl on the machine running the agent, not from the server. 1 Like. apt remove --purge check-mk-agent dpkg -i check-mk-agent_2. 1. Hosts, services and agents. It’s hard to tell where exactly it comes from. 7 LTS Attempting to register windows host with TLS upon performing corresponding command cmk-agent-ctl. 1. rs:14: starting [2023-02-10 12:54:18. 2. com--site FOO --user BAR -. sh script. After the installation everything worked. 0b4_0. 0p17. NOTE: A registered host will refuse all unencrypted connections. cmk-agent-ctl register --hostname localhost --server server:8000 --site mysite --user cmkadmin -vv. socket systemctl disable cmk-agent-ctl-daemon. exe register --hostname HOST --server SERVER: 8001 --site SITE --user USER. service: Scheduled restart job, restart counter is at 2. focal_amd64. 1. The systemd is version 246. I feel like I’m missing something real obvious. 04 - CMK RAW) where communication with the agent keeps giving errors "[agent] Communication failed: [Errno 104] Connection reset by peer - Got no information from host - execution time 0. 04. The Agent Controller cmk-agent-ctl is the component within the agent that is responsible for transporting the data collected by the agent script. Tested turning off firewall on 2019. g. All commands to be executed on the host to be monitored. 1. The client must set the version 0 for the CSRSo 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. 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”). 2. 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). 0 then you will find the systemd unit files. 514. 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. Agent auf allen Monitored Hosts installiert. check_mk agent runs on top of xinetd service in Linux. 1. On all other hosts the cmk-agent-ctl-daemon fails and registration is not possible. Please provide me with the output of:. After a reboot the cmk-agent-ctl-daemon and the check-mk-agent. Director of Registration and Certification at the address noted below. The folder /var/lib/cmk-agent was missing on my SUSE Linux Enterprise Micro 5. 45. Sehr beliebt ist z. 1. 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. Troubleshooting. 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. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. 1. OS version: Ubuntu Server 22. 0. From here click Create new host. I installed the CheckMK Agent on a TrueNAS SCALE host. 1. service should work as expected. Das zu bestätigende Server-Zertifikat haben wir aus Gründen der. exe' register -s checkmk. {"payload":{"allShortcutsEnabled":false,"fileTree":{"agents":{"items":[{"name":"cfg_examples","path":"agents/cfg_examples","contentType":"directory"},{"name. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. Become root. The Windows agent. 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. Home ; Categories ;Registration indeed is good. mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. The cmk-agent user was sucessfully created. , I had to put the public hostname). If you want to use the agent in legacy mode, you need to disable cmk-agent-ctl in bakery rules. 0. 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. service then restart xinitd and tell me about the output of ss -tulpn | grep 6556. cmk-update-agent register -v -H COMPUTERNAME -U register -S xxxxxxxxxxxxxxxxx. 1. " Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. Deutsch. I am trying to register an agent installed on a Windows Server 2019. 0p10 OS: linux The hosts agent supports TLS, but it is not being used. 0 (Blue Onyx) [root@CHECKMK services]# cmk-agent-ctl. 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. If the Agent Receiver accepts the request,. I created the folder manually and changed ownership, and now the registration is working! ERROR [cmk_agent_ctl] Something seems wrong with the agent socket (/run/check-mk-agent. 1. You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. 1 using the Agent Controller. , I had to put the public hostname). 0p20 Debian 11. Contact an admin if you think this should be re-opened. domain. 1 does not exist. After a reboot the cmk-agent-ctl-daemon and the check-mk-agent. On every host I register that way I don’t get any agent data because of the Issue Host is registe. If the host is monitored by multiple sites, you must register to all of them. The controller is executed under the cmk-agent user, which has limited privileges, e. I’m running 2. 1. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd.