consorzioburana. 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. The cmk-agent user is created during the installation of the agent. 0 adds the Agent Controller and new features to the agent script. 0 or earlier. 1. 57. 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. latest (2. I am trying to register an agent installed on a Windows Server 2019. 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. 0b4_0. Reloading xinetd Activating systemd unit. 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 you want to use the agent in legacy mode, you need to disable cmk-agent-ctl in bakery rules. Deutsch. xyz:9800 --site cmk --user BAR --password FOO. to checkmk. Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. 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. You already entered the right command with openssl s_client -connect SLAVE01:443. 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. deb. And with the CMC: OMD [mysite]:~$ cmk -O. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. It has to be a check_mk user, try with cmkadmin. 0. cmk-update-agent –v. service - Checkmk agent controller daemonIt seams you use a Debian system. The new TLS feature is need to register with cmk-agent-ctl register command. check_mk agent runs on top of xinetd service in Linux. I created the folder manually and changed ownership, and now the registration. 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. 4. The agent control use the port 8000 for communication. This might be a bug. In case it is left out, the agent controller tries to query the port from the REST API. 0p6. mschlenker (Mattias. 4. In case it is left out, the agent controller tries to query the port from the REST API. 04. 1. socket (failed failed) so I stopped and disabled them, then did systemctl daemon-reload and systemctl. I had to purge the client, reinstall and reboot the host to get the client to listen on port 6556. 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. 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. 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. Please provide me with the output of: systemctl status 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. So if you make any changes to the config file then you need to reload configuration or restart the agent. We strongly recommend to enable TLS by registering the host to the site (using the `cmk-agent-ctl register` command on the monitored host). Using previous settings from /etc/cmk-update-agent. 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. 2. 0 Agent socket: inoperational (!!)The agent control use the port 8000 for communication. 1. exe – register --trust-cert’ USAGE: cmk-agent-ctl. 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. Hi @robin. Hello. 6 Likes. no login shell, and is used only for data transfer. ” 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. NOTE: A registered host will refuse all unencrypted connections. 0. 1. If I try to register (not register-new) a server, which has been in the monitoring since yea…The agent control use the port 8000 for communication. 1. Hello. C:\Program Files (x86)\checkmk\service>cmk-agent-ctl. You can display. 0p22 agent by running cmk-agent-ctl on the 2. TLD -i SITE-NAME -U USERNAME This worked perfectly fine in CMK 2. The cmk-agent user is created during the installation of the agent. Join thousands of sysadmins and receive free professional tips and tricks to help you monitor your IT-infrastructure. Registration indeed is good. 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. We’ll come back to you to ask for. Are you trying to register the 2. I dont know why this folder could not be created during cmk agent installation from the cmk-agent-useradd. check_mk agent runs on top of xinetd service in Linux. 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. Specify the correct port when calling the registration command. no login shell, and is used only for data transfer. Explcit host: xxx. 1. Specify the correct port when calling the registration command. 1 agent. 2 system. 1. Please provide me with the output of: systemctl status check-mk-agent. 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. CMK 2. service: Start request repeated too quickly. cmk-agent-ctl delete-all --enable-insecure-connections; cmk-agent-ctl status; cmk-agent-ctl register --hostname $(hostname -f) --server checkmk21-prod. 1. it --server 192. user -vv INFO [cmk_agent_ctl] starting. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. Redirecting to /bin/systemctl reload xinetd. worked fine for me. On Linux systems, the agent controller will be. cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. Hosts, services and agents. This can be problematic if you are monitoring the same host from a site running Checkmk version 2. folgenden Register Befehl benutzt. cee Ubuntu 16. 1. 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. focal_amd64. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. CMK 2. deb Now the cmk-agent-ctl-daemon. , I had to put the public hostname). Segmentation fault (core dumped) The same result also with the all needed parameters for the registration. exe register --hostname xxx --server checkmk:8000 --site monitoring --user automation --… Hi, in the register-command use --server checkmk without the port, maybe there is a formatting problem with that. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. 0 OS Version: Appliance 1. local:8000 -s checkmk. Now you need to register the agnet for TLS handshake. Yes, it might seem weird. 0. 1. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. Our Manufacturers. Run communication test. socket. XXX. Now the cmk-agent-ctl-daemon. ColinP November 12, 2022, 12:44pm 1. You’ll also need to do something like cmk-agent-ctl register. Diese werden auch als aktive Checks bezeichnet. Einen auf den Server auf der Docker Service läuft (OpenSuse Tumbleweed), sowie einen Windows Server 2016. 04 Command used for registration: cmk-agent-ctl. 1. B. If you use the bakery, the agent was baked with enabled cmk-agent-ctl. no login shell, and is used only for data transfer. . 1. 0 OS Version: Appliance 1. CMK 2. 6. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. domain. ago. 1. Checkmk. g. Now you need to register the agnet for TLS handshake. sh script. The service is started. 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 it is xinetd remove the Xinetd config file for the Checkmk agent and just reinstall the agent package. ss -tulpn | grep 6556 tcp LISTEN 0 4096 *:6556 : users:((“cmk-agent-ctl”,pid=425,fd=9)) On the. 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. mschlenker (Mattias Schlenker) July 8, 2022, 8:12am 4. 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. 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. Please provide me with the output of:. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. Das funktioniert. 0 2. Checkmk Appliance Cluster. 4. 0p14 Agent socket: operational IP allowlist: 10. TLD -i SITE-NAME -U USERNAME. But if cmk-agent-ctl cannot be started, access fails. cmk-agent-ctl. 2 Delete all directories/files of the agent controller from the host. service: Scheduled restart job, restart counter is at 2. Linux: cmk-agent-ctl register --server meinserver. But if cmk-agent-ctl cannot be started, access fails. OS version: Rocky Linux release 9. This might be a bug. I try with: cmk-agent-ctl register --hostname MYHOST --server CMKHOST --site MYSITE --user cmkadmin --password ‘MYPASSWORD’ Then I get the. 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. „TLS is not activated on monitored host (see details)“. 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”). 0 adds the Agent Controller and new features to the agent program. exe – register --trust-cert’ USAGE: cmk-agent-ctl. From its very beginning, monitoring Windows servers has been one of the most important tasks performed by Checkmk. Open the terminal that you want to monitor on your. 04. After the installation everything worked. Even with custom checks. You can display command help with cmk-agent-ctl help, also for specific available subcommands, with cmk-agent-ctl help register for example. Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. " Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. mit cmk-agent-ctl help register. 1 gave 404 Not Found: Host 127. When trying to register the checkmk agent: Access is denied:. 488899 +01:00] INFO [cmk_agent_ctl] srcmain. exe' register -s checkmk. The Windows agent. If I try to register it with the command: cmk-agent-ctl register --detect-proxy --hostname FOO --server bla. Welcome to Checkmk. Bis einschließlich b2 war es so, dass der cmk-agent-ctl NICHT am Socket lauscht, solange er nicht für die TLS Verbindung registriert ist. mydomain. 0. I should have mentioned I have a network device sitting in-between which is presenting a different certificate (the wildcard cert signed by a public CA) and I haven’t changed any CA settings outside the web UI. 1. So if you make any changes to the config file then you need to reload configuration or restart the agent. This can be problematic if you are monitoring the same host from a site running Checkmk version 2. For this, I’m running following command on client # cmk-agent-ctl register --hostname `hostname -f` --server mon. It seams you use a Debian system. p3 OS version: CentOS 8. 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”). CMK version: 2. en. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. The Windows agent of Checkmk version 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. Sie können sich mit cmk-agent-ctl help die Kommandohilfe anzeigen lassen, auch spezifisch für die verfügbaren Subkommandos, z. I had to add the checkmk user again. Something like this. service: Scheduled restart job, restart counter is at 2. But the agent controller now periodically reads its config to check whether it is in pull or push mode – so it might take up to three minutes until SSL works after a registration. ╰─$ sudo cmk-agent-ctl status Version: 2. service --now $ sudo systemctl restart check-mk-agent. deb The monitored system is in a local network and have. Yes I did use the” cmk-agent-ctl register command,. cmk-agent-ctl register --hostname localhost --server server:8000 --site mysite --user cmkadmin -vv. This topic was automatically closed 365 days after the last reply. However, there is a difference between console output of “cmk-agent-ctl status” and “cmk_agent_ctl_status” from agent output (downloaded via “Download. On a related note, I’ve been following the beginner’s guide on setting up Checkmk and found that registering the Checkmk Agent for monitoring the monitoring server itself not working. The agent is running and I get all of the. If the host is monitored by multiple sites, you must register to. Also, from the command line of the CentOS 7 server I can fetch the login. 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. 4. 1. The systemd is version 246. I try with: cmk-agent-ctl register --hostname MYHOST --server CMKHOST --site MYSITE --user cmkadmin --password ‘MYPASSWORD’ Then I get the message: Thx for the quick reply, adding the port gives still the same result: root@paperless-ngx:~# cmk-agent-ctl register --trust-cert -H paperless-ngx. 0 the new Linux agent with the Agent Controller supports the registered, TLS-encrypted and compressed pull mode. Password for user ‘cmkadmin’: Successfully registered agent of host “monitor2” for deployment. Hi, Some days ago i was testing this software, do a few tests and lately installed on a VM runing linux mint 20. socket failed. 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. The controller is executed under the cmk-agent user, which has limited privileges, e. 0p10 OS: linux The hosts agent supports TLS, but it is not being used. Checkmk Server: Checkmk version: 2. Das wurde erst mit b3 geändert, gilt aber nur für die erste Installation. I had to add the checkmk user again. g. Jun 17 10:57:15 nc systemd[1]: cmk-agent-ctl-daemon. If you want to use the agent in legacy mode, you need to disable cmk-agent-ctl in bakery rules. For Debian remove the cmk-agent and purge the configuration, than reinstall the agent, this purges the xinetd configuration. Yes I did use the” cmk-agent-ctl register command, after that I got this message. domain. no login shell, and is used only for data transfer. 0 did not yet use TLS, so port 8000 didn’t need to be exposed back then. cmk-update-agent register -v -H COMPUTERNAME -U register -S xxxxxxxxxxxxxxxxx. Ausgabe ist: Local: Hier scheint alles ok zu seine, nur taucht der Host im. Just in case: We are prepared for cases where the agent controller cannot be started or. 14 --site burana_modena --user automation -. Added new host in CMK. You also need a --hostname flag, like --hostname test. no login shell, and is used only for data transfer. secret with the password as String. As suggested in another post i read i checked:-that port 8000 is open-omd config show | grep AGENT_RECEIVER show port 8000Description: Proxmox VE. exit # leave the site user shell. Since the machine you’re trying to monitor is still 2. 0. 1. 0 onwards), you have to add the following rights (internal name “general. It has to match the actual hostname used by the Checkmk server, found under “Setup” > “Hosts”. but here is everything ok. I installed the CheckMK Agent on a TrueNAS SCALE host. via journalctl -u cmk-agent-ctl-daemon. service. Become a Dealer. Either import the self signed certificate on this server paperless-ngx or use the same command with port. deb. 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. B. redacted. The cmk-agent user was sucessfully created. 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. 1. Output of “cmk --debug -vvn hostname”: (If it is a problem with checks or plugins) sudo: cmk: command not found. 0p14 Agent socket: operational IP allowlist: 10. 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. OS is Ubuntu 22. 1 and the site to 2. 1 Like. 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…. g. You have three options here: Make the REST API call work. This query is attempted both with and both queries fail, the controller aborts, otherwise, the result of the first sucessful query is. mydomain. If I try to register it with the command: cmk-agent-ctl register --detect-proxy --hostname FOO --server bla. 6 I have an external cloud host that I would like to monitor with in-house CMK server. ╰─$ sudo cmk-agent-ctl status Version: 2. I was using 8101 so after i set this it worked perfectly. register ^. OS version: TrueNAS SCALE 22. 1. I installed the CheckMK Agent on a TrueNAS SCALE host. 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. Can you verify this? You can use the following command for this, "C:Program Files (x86)checkmkservicecmk-agent-ctl. Another gotcha I came across was trying to run the register, make sure you are using admin cmd ( which you are ), then cut and paste the command in full : “C:\Program Files (x86)\checkmk\service\cmk-agent-ctl. In your case doing proxy. serviceCan you use the option trust-cert ? Also, what is the systemd version on your system ?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. 0/26. 1 sec. mschlenker (Mattias Schlenker) May 30, 2022, 6:11pm 4. If you use the bakery, the agent was baked with enabled cmk-agent-ctl. ” failed with this error: "Request failed with code 500 Internal Server Error: Internal Server Error"root@linux# cmk-agent-ctl register --hostname localhost --server mycmkserver --site mysite --user cmkadmin. 2. 0p15 OS version: TrueNAS SCALE 22. root@kerneltalks # service xinetd reload. 0. Version: 2. cmk-agent-ctl register -H ovhxxx -s publicIP:8194 -i cmk -U automation. 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. CMK version:2. The exact command line is this: cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. 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 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). no login shell, and is used only for data transfer. Host can telnet on port 8000 of the server and a curl request works. The cmk-agent user was sucessfully created. 0-1_all. 0. 02. DOMAIN. Die Registrierung erfolgt mit dem Agent Controller cmk-agent-ctl, der für die Konfiguration der Verbindungen eine Kommandoschnittstelle bietet. OK, please also stop cmk-agent-ctl-daemon. Fixed that with create a new User “automation” and created the file automation. OK, let’s figure out who is doing what. 1 does not exist. If the Agent Receiver accepts the request, registration is performed and a TLS-encrypted connection is established. Monthly Promotions Product Specials and Monthly Flyers Emailed Right to You! Online Ordering Check Price and. B. You can learn how to use the agent here. CMK version: 2. 0p15. Please provide me with the output of:. ColinP November 12, 2022, 12:44pm 1. 2. gerhards. cmk-agent-ctl register -v -H HOSTNAME -P 'PASSWORD' -s SUBDOMAIN. gerhards. 02. 0p10 Agent socket: operational IP allowlist: any Connection: localhost:8001/cmk UUID: 186f71b9-8d6f-41c6-be44-bb1f7c23ae7b Local: Connection. 0 2. Upon first try, “cmk-agent-ctl register. service: Scheduled restart job, restart counter is at 2. 02. 4. 107:8000 --site home -U cmkadmin ERROR [cmk_agent_ctl… One of my hosts is producing this error, while most others register fine: root@sshgateway:~# cmk-agent. 2. The Agent Receiver tells the Agent Controller. 0. Troubleshooting. I’m running 2. Upon first try, “cmk-agent-ctl register. 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. 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. Please provide me with the output of: systemctl status check-mk-agent. CMK agent is up and running, host is added to Check MK server and now I want to set up TLS connection.