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Upon registering the Agent controller for TLS, you encounter this problem:
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root@<cmkserver>:~# cmk-agent-ctl register -H <host> -s <checkmk-server> -i <site> -U <username> ERROR [cmk_agent_ctl] Failed to discover agent receiver port from Checkmk REST API, both with http and https. Error with http: Failed to discover agent receiver port from http://<checkmk-server>/<site>/check_mk/api/1.0/domain-types/internal/actions/discover-receiver/invoke error sending request for url (http://<checkmk-server>/<site>/check_mk/api/1.0/domain-types/internal/actions/discover-receiver/invoke): error trying to connect: error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed:ssl/statem/statem_clnt.c:1914: (unable to get local issuer certificate) error trying to connect: error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed:ssl/statem/statem_clnt.c:1914: (unable to get local issuer certificate) error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed:ssl/statem/statem_clnt.c:1914: (unable to get local issuer certificate) error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed:ssl/statem/statem_clnt.c:1914: Error with https: Failed to discover agent receiver port from https://<checkmk-server>/<site>/check_mk/api/1.0/domain-types/internal/actions/discover-receiver/invoke error sending request for url (https://<checkmk-server>/<site>/check_mk/api/1.0/domain-types/internal/actions/discover-receiver/invoke): error trying to connect: error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed:ssl/statem/statem_clnt.c:1914: (unable to get local issuer certificate) error trying to connect: error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed:ssl/statem/statem_clnt.c:1914: (unable to get local issuer certificate) error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed:ssl/statem/statem_clnt.c:1914: (unable to get local issuer certificate) error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed:ssl/statem/statem_clnt.c:1914: |
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Register the agent with the receiver port (by default 8000, counting up similar to site apache 5000 → 5001 ...) like so:
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root@<cmkserver>:~# cmk-agent-ctl register -H <host> -s <checkmk-server> -i <site> -U <username> -p:8000 |
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