Checking HTTPS Website runs into an error

CMK version: Checkmk Raw Edition 2.1.0p20
OS version: Docker Version on Debian 11

Error message: HTTP CRITICAL - No data received from host

**Output of “cmk --debug -vvn hostname”:

OMD[cmk]:~$ cmk --debug -vvn checkmk.i.3fu.de
Checkmk version 2.1.0p20
Try license usage history update.
Trying to acquire lock on /omd/sites/cmk/var/check_mk/license_usage/next_run
Got lock on /omd/sites/cmk/var/check_mk/license_usage/next_run
Trying to acquire lock on /omd/sites/cmk/var/check_mk/license_usage/history.json
Got lock on /omd/sites/cmk/var/check_mk/license_usage/history.json
Next run time has not been reached yet. Abort.
Releasing lock on /omd/sites/cmk/var/check_mk/license_usage/history.json
Released lock on /omd/sites/cmk/var/check_mk/license_usage/history.json
Releasing lock on /omd/sites/cmk/var/check_mk/license_usage/next_run
Released lock on /omd/sites/cmk/var/check_mk/license_usage/next_run
+ FETCHING DATA
  Source: SourceType.HOST/FetcherType.TCP
[cpu_tracking] Start [7ff7ac827850]
[TCPFetcher] Fetch with cache settings: DefaultAgentFileCache(checkmk.i.3fu.de, base_path=/omd/sites/cmk/tmp/check_mk/cache, max_age=MaxAge(checking=0, discovery=120, inventory=120), disabled=False, use_outdated=False, simulation=False)
Not using cache (Too old. Age is 51 sec, allowed is 0 sec)
[TCPFetcher] Execute data source
Connecting via TCP to 10.0.7.7:6556 (30.0s timeout)
Detected transport protocol: TransportProtocol.TLS (b'16')
Reading data from agent via TLS socket
Reading data from agent
Detected transport protocol: TransportProtocol.PLAIN (b'<<')
Write data to cache file /omd/sites/cmk/tmp/check_mk/cache/checkmk.i.3fu.de
Trying to acquire lock on /omd/sites/cmk/tmp/check_mk/cache/checkmk.i.3fu.de
Got lock on /omd/sites/cmk/tmp/check_mk/cache/checkmk.i.3fu.de
Releasing lock on /omd/sites/cmk/tmp/check_mk/cache/checkmk.i.3fu.de
Released lock on /omd/sites/cmk/tmp/check_mk/cache/checkmk.i.3fu.de
Closing TCP connection to 10.0.7.7:6556
[cpu_tracking] Stop [7ff7ac827850 - Snapshot(process=posix.times_result(user=0.0, system=0.010000000000000009, children_user=0.0, children_system=0.0, elapsed=9.560000002384186))]
  Source: SourceType.HOST/FetcherType.PIGGYBACK
[cpu_tracking] Start [7ff7ac827bb0]
[PiggybackFetcher] Fetch with cache settings: NoCache(checkmk.i.3fu.de, base_path=/omd/sites/cmk/tmp/check_mk/data_source_cache/piggyback, max_age=MaxAge(checking=0, discovery=120, inventory=120), disabled=True, use_outdated=False, simulation=False)
Not using cache (Cache usage disabled)
[PiggybackFetcher] Execute data source
Piggyback file '/omd/sites/cmk/tmp/check_mk/piggyback/checkmk.i.3fu.de/proxmox2.i.3fu.de': Successfully processed from source 'proxmox2.i.3fu.de'
Piggyback file '/omd/sites/cmk/tmp/check_mk/piggyback/checkmk.i.3fu.de/proxmox.i.3fu.de': Successfully processed from source 'proxmox.i.3fu.de'
No piggyback files for '10.0.7.7'. Skip processing.
Not using cache (Cache usage disabled)
[cpu_tracking] Stop [7ff7ac827bb0 - Snapshot(process=posix.times_result(user=0.009999999999999787, system=0.0, children_user=0.0, children_system=0.0, elapsed=0.0))]
+ PARSE FETCHER RESULTS
  Source: SourceType.HOST/FetcherType.TCP
<<<check_mk>>> / Transition NOOPParser -> HostSectionParser
<<<cmk_agent_ctl_status:sep(0)>>> / Transition HostSectionParser -> HostSectionParser
<<<checkmk_agent_plugins_lnx:sep(0)>>> / Transition HostSectionParser -> HostSectionParser
<<<labels:sep(0)>>> / Transition HostSectionParser -> HostSectionParser
<<<df>>> / Transition HostSectionParser -> HostSectionParser
<<<df>>> / Transition HostSectionParser -> HostSectionParser
<<<systemd_units>>> / Transition HostSectionParser -> HostSectionParser
<<<nfsmounts>>> / Transition HostSectionParser -> HostSectionParser
<<<cifsmounts>>> / Transition HostSectionParser -> HostSectionParser
<<<mounts>>> / Transition HostSectionParser -> HostSectionParser
<<<ps_lnx>>> / Transition HostSectionParser -> HostSectionParser
<<<mem>>> / Transition HostSectionParser -> HostSectionParser
<<<lxc_container_cpu_cgroupv2>>> / Transition HostSectionParser -> HostSectionParser
<<<uptime>>> / Transition HostSectionParser -> HostSectionParser
<<<lnx_if>>> / Transition HostSectionParser -> HostSectionParser
<<<lnx_if:sep(58)>>> / Transition HostSectionParser -> HostSectionParser
<<<lnx_bonding:sep(58)>>> / Transition HostSectionParser -> HostSectionParser
<<<tcp_conn_stats>>> / Transition HostSectionParser -> HostSectionParser
<<<diskstat>>> / Transition HostSectionParser -> HostSectionParser
<<<md>>> / Transition HostSectionParser -> HostSectionParser
<<<vbox_guest>>> / Transition HostSectionParser -> HostSectionParser
<<<postfix_mailq>>> / Transition HostSectionParser -> HostSectionParser
<<<postfix_mailq_status:sep(58)>>> / Transition HostSectionParser -> HostSectionParser
<<<job>>> / Transition HostSectionParser -> HostSectionParser
<<<local:sep(0)>>> / Transition HostSectionParser -> HostSectionParser
<<<apt:sep(0)>>> / Transition HostSectionParser -> HostSectionParser
<<<docker_node_info:sep(124)>>> / Transition HostSectionParser -> HostSectionParser
<<<docker_node_info:sep(0)>>> / Transition HostSectionParser -> HostSectionParser
<<<docker_node_disk_usage:sep(124)>>> / Transition HostSectionParser -> HostSectionParser
<<<docker_node_disk_usage:sep(0)>>> / Transition HostSectionParser -> HostSectionParser
<<<docker_node_images:sep(124)>>> / Transition HostSectionParser -> HostSectionParser
<<<docker_node_images:sep(0)>>> / Transition HostSectionParser -> HostSectionParser
<<<docker_node_network:sep(124)>>> / Transition HostSectionParser -> HostSectionParser
<<<docker_node_network:sep(0)>>> / Transition HostSectionParser -> HostSectionParser
PiggybackMarker(hostname='docker.i.checkmk.Reverseproxy') / Transition HostSectionParser -> PiggybackParser
PiggybackMarker(hostname='docker.i.checkmk.Reverseproxy') SectionMarker(name=SectionName('docker_container_node_name'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='|') / Transition PiggybackParser -> PiggybackSectionParser
PiggybackMarker(hostname='docker.i.checkmk.Reverseproxy') SectionMarker(name=SectionName('docker_container_node_name'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='\x00') / Transition PiggybackSectionParser -> PiggybackSectionParser
Transition PiggybackSectionParser -> NOOPParser
PiggybackMarker(hostname='monitor') / Transition NOOPParser -> PiggybackParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('docker_container_node_name'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='|') / Transition PiggybackParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('docker_container_node_name'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='\x00') / Transition PiggybackSectionParser -> PiggybackSectionParser
Transition PiggybackSectionParser -> NOOPParser
PiggybackMarker(hostname='docker.i.checkmk.portainer-agent') / Transition NOOPParser -> PiggybackParser
PiggybackMarker(hostname='docker.i.checkmk.portainer-agent') SectionMarker(name=SectionName('docker_container_node_name'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='|') / Transition PiggybackParser -> PiggybackSectionParser
PiggybackMarker(hostname='docker.i.checkmk.portainer-agent') SectionMarker(name=SectionName('docker_container_node_name'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='\x00') / Transition PiggybackSectionParser -> PiggybackSectionParser
Transition PiggybackSectionParser -> NOOPParser
PiggybackMarker(hostname='monitor') / Transition NOOPParser -> PiggybackParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('docker_container_status'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='|') / Transition PiggybackParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('docker_container_status'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='\x00') / Transition PiggybackSectionParser -> PiggybackSectionParser
Transition PiggybackSectionParser -> NOOPParser
PiggybackMarker(hostname='monitor') / Transition NOOPParser -> PiggybackParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('docker_container_labels'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='|') / Transition PiggybackParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('docker_container_labels'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='\x00') / Transition PiggybackSectionParser -> PiggybackSectionParser
Transition PiggybackSectionParser -> NOOPParser
PiggybackMarker(hostname='monitor') / Transition NOOPParser -> PiggybackParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('docker_container_network'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='|') / Transition PiggybackParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('docker_container_network'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='\x00') / Transition PiggybackSectionParser -> PiggybackSectionParser
Transition PiggybackSectionParser -> NOOPParser
PiggybackMarker(hostname='docker.i.checkmk.Reverseproxy') / Transition NOOPParser -> PiggybackParser
PiggybackMarker(hostname='docker.i.checkmk.Reverseproxy') SectionMarker(name=SectionName('docker_container_status'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='|') / Transition PiggybackParser -> PiggybackSectionParser
PiggybackMarker(hostname='docker.i.checkmk.Reverseproxy') SectionMarker(name=SectionName('docker_container_status'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='\x00') / Transition PiggybackSectionParser -> PiggybackSectionParser
Transition PiggybackSectionParser -> NOOPParser
PiggybackMarker(hostname='docker.i.checkmk.portainer-agent') / Transition NOOPParser -> PiggybackParser
PiggybackMarker(hostname='docker.i.checkmk.portainer-agent') SectionMarker(name=SectionName('docker_container_status'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='|') / Transition PiggybackParser -> PiggybackSectionParser
PiggybackMarker(hostname='docker.i.checkmk.portainer-agent') SectionMarker(name=SectionName('docker_container_status'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='\x00') / Transition PiggybackSectionParser -> PiggybackSectionParser
Transition PiggybackSectionParser -> NOOPParser
PiggybackMarker(hostname='docker.i.checkmk.Reverseproxy') / Transition NOOPParser -> PiggybackParser
PiggybackMarker(hostname='docker.i.checkmk.Reverseproxy') SectionMarker(name=SectionName('docker_container_labels'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='|') / Transition PiggybackParser -> PiggybackSectionParser
PiggybackMarker(hostname='docker.i.checkmk.Reverseproxy') SectionMarker(name=SectionName('docker_container_labels'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='\x00') / Transition PiggybackSectionParser -> PiggybackSectionParser
Transition PiggybackSectionParser -> NOOPParser
PiggybackMarker(hostname='docker.i.checkmk.portainer-agent') / Transition NOOPParser -> PiggybackParser
PiggybackMarker(hostname='docker.i.checkmk.portainer-agent') SectionMarker(name=SectionName('docker_container_labels'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='|') / Transition PiggybackParser -> PiggybackSectionParser
PiggybackMarker(hostname='docker.i.checkmk.portainer-agent') SectionMarker(name=SectionName('docker_container_labels'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='\x00') / Transition PiggybackSectionParser -> PiggybackSectionParser
Transition PiggybackSectionParser -> NOOPParser
PiggybackMarker(hostname='docker.i.checkmk.Reverseproxy') / Transition NOOPParser -> PiggybackParser
PiggybackMarker(hostname='docker.i.checkmk.Reverseproxy') SectionMarker(name=SectionName('docker_container_network'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='|') / Transition PiggybackParser -> PiggybackSectionParser
PiggybackMarker(hostname='docker.i.checkmk.Reverseproxy') SectionMarker(name=SectionName('docker_container_network'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='\x00') / Transition PiggybackSectionParser -> PiggybackSectionParser
Transition PiggybackSectionParser -> NOOPParser
PiggybackMarker(hostname='docker.i.checkmk.portainer-agent') / Transition NOOPParser -> PiggybackParser
PiggybackMarker(hostname='docker.i.checkmk.portainer-agent') SectionMarker(name=SectionName('docker_container_network'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='|') / Transition PiggybackParser -> PiggybackSectionParser
PiggybackMarker(hostname='docker.i.checkmk.portainer-agent') SectionMarker(name=SectionName('docker_container_network'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='\x00') / Transition PiggybackSectionParser -> PiggybackSectionParser
Transition PiggybackSectionParser -> NOOPParser
PiggybackMarker(hostname='monitor') / Transition NOOPParser -> PiggybackParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('check_mk'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator=None) / Transition PiggybackParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('checkmk_agent_plugins_lnx'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='\x00') / Transition PiggybackSectionParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('labels'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='\x00') / Transition PiggybackSectionParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('nfsmounts'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator=None) / Transition PiggybackSectionParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('cifsmounts'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator=None) / Transition PiggybackSectionParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('mounts'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator=None) / Transition PiggybackSectionParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('ps_lnx'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator=None) / Transition PiggybackSectionParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('docker_container_mem_cgroupv2'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator=None) / Transition PiggybackSectionParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('docker_container_cpu_cgroupv2'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator=None) / Transition PiggybackSectionParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('uptime'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator=None) / Transition PiggybackSectionParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('lnx_if'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator=':') / Transition PiggybackSectionParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('lnx_bonding'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator=':') / Transition PiggybackSectionParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('tcp_conn_stats'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator=None) / Transition PiggybackSectionParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('docker_container_diskstat_cgroupv2'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator=None) / Transition PiggybackSectionParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('md'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator=None) / Transition PiggybackSectionParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('vbox_guest'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator=None) / Transition PiggybackSectionParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('postfix_mailq'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator=None) / Transition PiggybackSectionParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('postfix_mailq_status'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator=':') / Transition PiggybackSectionParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('livestatus_status'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator=';') / Transition PiggybackSectionParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('livestatus_ssl_certs'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='|') / Transition PiggybackSectionParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('mkeventd_status'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='\x00') / Transition PiggybackSectionParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('cmk_site_statistics'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator=';') / Transition PiggybackSectionParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('job'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator=None) / Transition PiggybackSectionParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('omd_status'), cached=(1675366110, 60), encoding='utf-8', nostrip=False, persist=None, separator=None) / Transition PiggybackSectionParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('mknotifyd'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='\x00') / Transition PiggybackSectionParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('omd_apache'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='|') / Transition PiggybackSectionParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('omd_info'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator=';') / Transition PiggybackSectionParser -> PiggybackSectionParser
PiggybackMarker(hostname='monitor') SectionMarker(name=SectionName('local'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='\x00') / Transition PiggybackSectionParser -> PiggybackSectionParser
Transition PiggybackSectionParser -> NOOPParser
PiggybackMarker(hostname='docker.i.checkmk.portainer-agent') / Transition NOOPParser -> PiggybackParser
PiggybackMarker(hostname='docker.i.checkmk.portainer-agent') SectionMarker(name=SectionName('docker_container_mem'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='|') / Transition PiggybackParser -> PiggybackSectionParser
PiggybackMarker(hostname='docker.i.checkmk.portainer-agent') SectionMarker(name=SectionName('docker_container_mem'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='\x00') / Transition PiggybackSectionParser -> PiggybackSectionParser
Transition PiggybackSectionParser -> NOOPParser
PiggybackMarker(hostname='docker.i.checkmk.portainer-agent') / Transition NOOPParser -> PiggybackParser
PiggybackMarker(hostname='docker.i.checkmk.portainer-agent') SectionMarker(name=SectionName('docker_container_cpu'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='|') / Transition PiggybackParser -> PiggybackSectionParser
PiggybackMarker(hostname='docker.i.checkmk.portainer-agent') SectionMarker(name=SectionName('docker_container_cpu'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='\x00') / Transition PiggybackSectionParser -> PiggybackSectionParser
Transition PiggybackSectionParser -> NOOPParser
PiggybackMarker(hostname='docker.i.checkmk.portainer-agent') / Transition NOOPParser -> PiggybackParser
PiggybackMarker(hostname='docker.i.checkmk.portainer-agent') SectionMarker(name=SectionName('docker_container_diskstat'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='|') / Transition PiggybackParser -> PiggybackSectionParser
PiggybackMarker(hostname='docker.i.checkmk.portainer-agent') SectionMarker(name=SectionName('docker_container_diskstat'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='\x00') / Transition PiggybackSectionParser -> PiggybackSectionParser
Transition PiggybackSectionParser -> NOOPParser
PiggybackMarker(hostname='docker.i.checkmk.Reverseproxy') / Transition NOOPParser -> PiggybackParser
PiggybackMarker(hostname='docker.i.checkmk.Reverseproxy') SectionMarker(name=SectionName('docker_container_mem'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='|') / Transition PiggybackParser -> PiggybackSectionParser
PiggybackMarker(hostname='docker.i.checkmk.Reverseproxy') SectionMarker(name=SectionName('docker_container_mem'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='\x00') / Transition PiggybackSectionParser -> PiggybackSectionParser
Transition PiggybackSectionParser -> NOOPParser
PiggybackMarker(hostname='docker.i.checkmk.Reverseproxy') / Transition NOOPParser -> PiggybackParser
PiggybackMarker(hostname='docker.i.checkmk.Reverseproxy') SectionMarker(name=SectionName('docker_container_cpu'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='|') / Transition PiggybackParser -> PiggybackSectionParser
PiggybackMarker(hostname='docker.i.checkmk.Reverseproxy') SectionMarker(name=SectionName('docker_container_cpu'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='\x00') / Transition PiggybackSectionParser -> PiggybackSectionParser
Transition PiggybackSectionParser -> NOOPParser
PiggybackMarker(hostname='docker.i.checkmk.Reverseproxy') / Transition NOOPParser -> PiggybackParser
PiggybackMarker(hostname='docker.i.checkmk.Reverseproxy') SectionMarker(name=SectionName('docker_container_diskstat'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='|') / Transition PiggybackParser -> PiggybackSectionParser
PiggybackMarker(hostname='docker.i.checkmk.Reverseproxy') SectionMarker(name=SectionName('docker_container_diskstat'), cached=None, encoding='utf-8', nostrip=False, persist=None, separator='\x00') / Transition PiggybackSectionParser -> PiggybackSectionParser
Transition PiggybackSectionParser -> NOOPParser
<<<filestats:sep(0)>>> / Transition NOOPParser -> HostSectionParser
No persisted sections
  -> Add sections: ['apt', 'check_mk', 'checkmk_agent_plugins_lnx', 'cifsmounts', 'cmk_agent_ctl_status', 'df', 'diskstat', 'docker_node_disk_usage', 'docker_node_images', 'docker_node_info', 'docker_node_network', 'filestats', 'job', 'labels', 'lnx_bonding', 'lnx_if', 'local', 'lxc_container_cpu_cgroupv2', 'md', 'mem', 'mounts', 'nfsmounts', 'postfix_mailq', 'postfix_mailq_status', 'ps_lnx', 'systemd_units', 'tcp_conn_stats', 'uptime', 'vbox_guest']
  Source: SourceType.HOST/FetcherType.PIGGYBACK
<<<proxmox_ve_vm_info:cached(1675365678,90):sep(0)>>> / Transition NOOPParser -> HostSectionParser
<<<proxmox_ve_disk_usage:cached(1675365678,90):sep(0)>>> / Transition HostSectionParser -> HostSectionParser
<<<proxmox_ve_mem_usage:cached(1675365678,90):sep(0)>>> / Transition HostSectionParser -> HostSectionParser
<<<proxmox_ve_vm_backup_status:cached(1675365678,90):sep(0)>>> / Transition HostSectionParser -> HostSectionParser
<<<proxmox_ve_vm_snapshot_age:cached(1675365678,90):sep(0)>>> / Transition HostSectionParser -> HostSectionParser
<<<proxmox_ve_vm_info:cached(1675366114,90):sep(0)>>> / Transition HostSectionParser -> HostSectionParser
<<<proxmox_ve_disk_usage:cached(1675366114,90):sep(0)>>> / Transition HostSectionParser -> HostSectionParser
<<<proxmox_ve_mem_usage:cached(1675366114,90):sep(0)>>> / Transition HostSectionParser -> HostSectionParser
<<<proxmox_ve_vm_backup_status:cached(1675366114,90):sep(0)>>> / Transition HostSectionParser -> HostSectionParser
<<<proxmox_ve_vm_snapshot_age:cached(1675366114,90):sep(0)>>> / Transition HostSectionParser -> HostSectionParser
<<<labels:sep(0)>>> / Transition HostSectionParser -> HostSectionParser
No persisted sections
  -> Add sections: ['labels', 'proxmox_ve_disk_usage', 'proxmox_ve_mem_usage', 'proxmox_ve_vm_backup_status', 'proxmox_ve_vm_info', 'proxmox_ve_vm_snapshot_age']
Storing piggyback data for: 'docker.i.checkmk.Reverseproxy'
Trying to acquire lock on /omd/sites/cmk/tmp/check_mk/piggyback/docker.i.checkmk.Reverseproxy/checkmk.i.3fu.de
Got lock on /omd/sites/cmk/tmp/check_mk/piggyback/docker.i.checkmk.Reverseproxy/checkmk.i.3fu.de
Releasing lock on /omd/sites/cmk/tmp/check_mk/piggyback/docker.i.checkmk.Reverseproxy/checkmk.i.3fu.de
Released lock on /omd/sites/cmk/tmp/check_mk/piggyback/docker.i.checkmk.Reverseproxy/checkmk.i.3fu.de
Storing piggyback data for: 'monitor'
Trying to acquire lock on /omd/sites/cmk/tmp/check_mk/piggyback/monitor/checkmk.i.3fu.de
Got lock on /omd/sites/cmk/tmp/check_mk/piggyback/monitor/checkmk.i.3fu.de
Releasing lock on /omd/sites/cmk/tmp/check_mk/piggyback/monitor/checkmk.i.3fu.de
Released lock on /omd/sites/cmk/tmp/check_mk/piggyback/monitor/checkmk.i.3fu.de
Storing piggyback data for: 'docker.i.checkmk.portainer-agent'
Trying to acquire lock on /omd/sites/cmk/tmp/check_mk/piggyback/docker.i.checkmk.portainer-agent/checkmk.i.3fu.de
Got lock on /omd/sites/cmk/tmp/check_mk/piggyback/docker.i.checkmk.portainer-agent/checkmk.i.3fu.de
Releasing lock on /omd/sites/cmk/tmp/check_mk/piggyback/docker.i.checkmk.portainer-agent/checkmk.i.3fu.de
Released lock on /omd/sites/cmk/tmp/check_mk/piggyback/docker.i.checkmk.portainer-agent/checkmk.i.3fu.de
Received piggyback data for 3 hosts
Storing piggyback data for: 'docker.i.checkmk.Reverseproxy'
Trying to acquire lock on /omd/sites/cmk/tmp/check_mk/piggyback/docker.i.checkmk.Reverseproxy/checkmk.i.3fu.de
Got lock on /omd/sites/cmk/tmp/check_mk/piggyback/docker.i.checkmk.Reverseproxy/checkmk.i.3fu.de
Releasing lock on /omd/sites/cmk/tmp/check_mk/piggyback/docker.i.checkmk.Reverseproxy/checkmk.i.3fu.de
Released lock on /omd/sites/cmk/tmp/check_mk/piggyback/docker.i.checkmk.Reverseproxy/checkmk.i.3fu.de
Storing piggyback data for: 'monitor'
Trying to acquire lock on /omd/sites/cmk/tmp/check_mk/piggyback/monitor/checkmk.i.3fu.de
Got lock on /omd/sites/cmk/tmp/check_mk/piggyback/monitor/checkmk.i.3fu.de
Releasing lock on /omd/sites/cmk/tmp/check_mk/piggyback/monitor/checkmk.i.3fu.de
Released lock on /omd/sites/cmk/tmp/check_mk/piggyback/monitor/checkmk.i.3fu.de
Storing piggyback data for: 'docker.i.checkmk.portainer-agent'
Trying to acquire lock on /omd/sites/cmk/tmp/check_mk/piggyback/docker.i.checkmk.portainer-agent/checkmk.i.3fu.de
Got lock on /omd/sites/cmk/tmp/check_mk/piggyback/docker.i.checkmk.portainer-agent/checkmk.i.3fu.de
Releasing lock on /omd/sites/cmk/tmp/check_mk/piggyback/docker.i.checkmk.portainer-agent/checkmk.i.3fu.de
Released lock on /omd/sites/cmk/tmp/check_mk/piggyback/docker.i.checkmk.portainer-agent/checkmk.i.3fu.de
Received piggyback data for 3 hosts
[cpu_tracking] Start [7ff7ac827bb0]
value store: synchronizing
Trying to acquire lock on /omd/sites/cmk/tmp/check_mk/counters/checkmk.i.3fu.de
Got lock on /omd/sites/cmk/tmp/check_mk/counters/checkmk.i.3fu.de
value store: loading from disk
Releasing lock on /omd/sites/cmk/tmp/check_mk/counters/checkmk.i.3fu.de
Released lock on /omd/sites/cmk/tmp/check_mk/counters/checkmk.i.3fu.de
APT Updates          No updates pending for installation
CPU utilization      Total CPU: 119.98%
Check_MK Agent       Version: 2.1.0p18, OS: linux, Agent plugins: 3, Local checks: 0
Disk IO SUMMARY      Read: 0.00 B/s, Write: 11.6 MB/s, Latency: 335 microseconds
Docker containers    Containers: 3, Running: 3, Paused: 0, Stopped: 0
Docker disk usage - buildcache Size: 0.00 B, Reclaimable: 0.00 B, Count: 0, Active: 0
Docker disk usage - containers Size: 31.96 MB, Reclaimable: 0.00 B, Count: 3, Active: 3
Docker disk usage - images Size: 2.36 GB, Reclaimable: 186.39 MB, Count: 4, Active: 3
Docker disk usage - volumes Size: 0.00 B, Reclaimable: 0.00 B, Count: 0, Active: 0
Docker node info     Daemon running on host checkmk
File group piggyback Files in total: 89, Smallest: 413.00 B, Largest: 29.11 kB, Newest: 7.00 s, Oldest: 13 m
Filesystem /         11.74% used (8.81 of 75.00 GB), trend: +115.65 MB / 24 hours
Interface 2          [eth0], (up), MAC: 22:9D:35:19:6E:BD, Speed: 10 GBit/s, In: 19.0 kB/s (<0.01%), Out: 5.02 kB/s (<0.01%)
Interface 3          [br-4ee42889a18d], (up), MAC: 02:42:2A:43:0D:3F, Speed: 10 GBit/s, In: 4.41 kB/s (<0.01%), Out: 18.5 kB/s (<0.01%)
Interface 4          [br-8056b8edc51f], (up), MAC: 02:42:FF:52:D7:D0, Speed: 10 GBit/s, In: 12.1 B/s (<0.01%), Out: 15.1 B/s (<0.01%)
Memory               Total virtual memory: 10.98% - 1.76 GB of 16.00 GB, 7 additional details available
Postfix Queue        Deferred queue length: 0, Active queue length: 0
Postfix status       Status: the Postfix mail system is running, PID: 448
Proxmox VE Disk Usage 11.74% used (9.45 GB of 80.5 GB)
Proxmox VE Memory Usage Usage: 9.39% - 1.50 GiB of 16.0 GiB
Proxmox VE VM Backup Status Age: 18 hours 29 minutes, Server local start time: 2023-02-02 02:00:07+01:00, Duration: 1 minute 8 seconds, Name: /mnt/pve/backup/dump/vzdump-lxc-107-2023_02_02-02_00_07.tar.zst, Size: 1.87 GiB, Bandwidth: 164 MB/s
Proxmox VE VM Info   VM ID: 107, Status: running, Type: lxc, Host: proxmox2
Proxmox VE VM Snapshot age No snapshot found
Systemd Service Summary Total: 75, Disabled: 4, Failed: 0
TCP Connections      Established: 3
Uptime               Up since Feb 02 2023 02:01:23, Uptime: 18 hours 28 minutes
+ EXECUTING INVENTORY PLUGINS
 aruba_wlc_aps: skipped (no data)
 aruba_wlc_aps: skipped (no data)
 check_mk: ok
 check_mk: skipped (no data)
 checkmk_agent_plugins: ok
 checkmk_agent_plugins: skipped (no data)
 docker_node_info: ok
 docker_node_info: skipped (no data)
 fritz: skipped (no data)
 fritz: skipped (no data)
 hp_proliant_da_phydrv: skipped (no data)
 hp_proliant_da_phydrv: skipped (no data)
 hp_proliant_mem: skipped (no data)
 hp_proliant_mem: skipped (no data)
 ibm_mq_channels: skipped (no data)
 ibm_mq_channels: skipped (no data)
 ibm_mq_managers: skipped (no data)
 ibm_mq_managers: skipped (no data)
 ibm_mq_queues: skipped (no data)
 ibm_mq_queues: skipped (no data)
 ipmi_firmware: skipped (no data)
 ipmi_firmware: skipped (no data)
 inv_cisco_vlans: skipped (no data)
 inv_cisco_vlans: skipped (no data)
 inv_esx_vsphere_hostsystem: skipped (no data)
 inv_esx_vsphere_hostsystem: skipped (no data)
 inv_if: ok
 inv_if: skipped (no data)
 aix_packages: skipped (no data)
 aix_packages: skipped (no data)
 aix_service_packs: skipped (no data)
 aix_service_packs: skipped (no data)
 inventory_checkmk: skipped (no data)
 inventory_checkmk: skipped (no data)
 checkpoint_vpn_tunnels: skipped (no data)
 checkpoint_vpn_tunnels: skipped (no data)
 dmidecode: skipped (no data)
 dmidecode: skipped (no data)
 docker_container_labels: skipped (no data)
 docker_container_labels: skipped (no data)
 docker_container_network: skipped (no data)
 docker_container_network: skipped (no data)
 docker_node_images: ok
 docker_node_images: skipped (no data)
 docker_node_network: ok
 docker_node_network: skipped (no data)
 inventory_esx_vsphere_clusters: skipped (no data)
 inventory_esx_vsphere_clusters: skipped (no data)
 inventory_esx_vsphere_virtual_machines: skipped (no data)
 inventory_esx_vsphere_virtual_machines: skipped (no data)
 fortiauthenticator_system: skipped (no data)
 fortiauthenticator_system: skipped (no data)
 fortigate_ha: skipped (no data)
 fortigate_ha: skipped (no data)
 fortimail_system: skipped (no data)
 fortimail_system: skipped (no data)
 fortisandbox_software: skipped (no data)
 fortisandbox_software: skipped (no data)
 fortisandbox_system: skipped (no data)
 fortisandbox_system: skipped (no data)
 k8s_assigned_pods: skipped (no data)
 k8s_assigned_pods: skipped (no data)
 k8s_daemon_pod_containers: skipped (no data)
 k8s_daemon_pod_containers: skipped (no data)
 k8s_endpoint_info: skipped (no data)
 k8s_endpoint_info: skipped (no data)
 k8s_ingress_infos: skipped (no data)
 k8s_ingress_infos: skipped (no data)
 k8s_job_container: skipped (no data)
 k8s_job_container: skipped (no data)
 kube_cluster: skipped (no data)
 kube_cluster: skipped (no data)
 kube_daemonset: skipped (no data)
 kube_daemonset: skipped (no data)
 kube_deployment: skipped (no data)
 kube_deployment: skipped (no data)
 kube_namespace: skipped (no data)
 kube_namespace: skipped (no data)
 kube_node: skipped (no data)
 kube_node: skipped (no data)
 kube_pod: skipped (no data)
 kube_pod: skipped (no data)
 kube_statefulset: skipped (no data)
 kube_statefulset: skipped (no data)
 lnx_block_devices: skipped (no data)
 lnx_block_devices: skipped (no data)
 lnx_ip_r: skipped (no data)
 lnx_ip_r: skipped (no data)
 lnx_packages: skipped (no data)
 lnx_packages: skipped (no data)
 lnx_sysctl: skipped (no data)
 lnx_sysctl: skipped (no data)
 lnx_video: skipped (no data)
 lnx_video: skipped (no data)
 mobileiron_inventory: ok
 mobileiron_inventory: skipped (no data)
 mssql_clusters: skipped (no data)
 mssql_clusters: skipped (no data)
 oracle_systemparameter: skipped (no data)
 oracle_systemparameter: skipped (no data)
 snmp_extended_info: skipped (no data)
 snmp_extended_info: skipped (no data)
 solaris_addresses: skipped (no data)
 solaris_addresses: skipped (no data)
 solaris_pkginfo: skipped (no data)
 solaris_pkginfo: skipped (no data)
 solaris_psrinfo: skipped (no data)
 solaris_psrinfo: skipped (no data)
 solaris_cpus: skipped (no data)
 solaris_cpus: skipped (no data)
 solaris_prtpicl: skipped (no data)
 solaris_prtpicl: skipped (no data)
 solaris_routes: skipped (no data)
 solaris_routes: skipped (no data)
 statgrab_net: skipped (no data)
 statgrab_net: skipped (no data)
 win_disks: skipped (no data)
 win_disks: skipped (no data)
 win_exefiles: skipped (no data)
 win_exefiles: skipped (no data)
 win_ip_r: skipped (no data)
 win_ip_r: skipped (no data)
 win_networkadapter: skipped (no data)
 win_networkadapter: skipped (no data)
 win_reg_uninstall: skipped (no data)
 win_reg_uninstall: skipped (no data)
 win_video: skipped (no data)
 win_video: skipped (no data)
 win_wmi_software: skipped (no data)
 win_wmi_software: skipped (no data)
 win_wmi_updates: skipped (no data)
 win_wmi_updates: skipped (no data)
 juniper_info: skipped (no data)
 juniper_info: skipped (no data)
 k8s_nodes: skipped (no data)
 k8s_nodes: skipped (no data)
 k8s_pod_container: skipped (no data)
 k8s_pod_container: skipped (no data)
 k8s_roles: skipped (no data)
 k8s_roles: skipped (no data)
 lnx_if: ok
 lnx_if: skipped (no data)
 mem: ok
 mem: skipped (no data)
 mem_used: skipped (no data)
 mem_used: skipped (no data)
 mssql_instance: skipped (no data)
 mssql_instance: skipped (no data)
 netapp_api_disk: skipped (no data)
 netapp_api_disk: skipped (no data)
 oracle_dataguard_stats: skipped (no data)
 oracle_dataguard_stats: skipped (no data)
 oracle_instance: skipped (no data)
 oracle_instance: skipped (no data)
 oracle_performance: skipped (no data)
 oracle_performance: skipped (no data)
 oracle_recovery_area: skipped (no data)
 oracle_recovery_area: skipped (no data)
 oracle_tablespaces: skipped (no data)
 oracle_tablespaces: skipped (no data)
 perle_chassis_slots: skipped (no data)
 perle_chassis_slots: skipped (no data)
 perle_psmu: skipped (no data)
 perle_psmu: skipped (no data)
 snmp_info: skipped (no data)
 snmp_info: skipped (no data)
 winperf_if: skipped (no data)
 winperf_if: skipped (no data)
 aix_baselevel: skipped (no data)
 aix_baselevel: skipped (no data)
 aix_lparstat_inventory: skipped (no data)
 aix_lparstat_inventory: skipped (no data)
 allnet_ip_sensoric: skipped (no data)
 allnet_ip_sensoric: skipped (no data)
 citrix_controller: skipped (no data)
 citrix_controller: skipped (no data)
 citrix_state: skipped (no data)
 citrix_state: skipped (no data)
 couchbase_nodes_ports: skipped (no data)
 couchbase_nodes_ports: skipped (no data)
 dell_hw_info: skipped (no data)
 dell_hw_info: skipped (no data)
 docker_container_node_name: skipped (no data)
 docker_container_node_name: skipped (no data)
 esx_systeminfo: skipped (no data)
 esx_systeminfo: skipped (no data)
 fireeye_sys_status: skipped (no data)
 fireeye_sys_status: skipped (no data)
 hp_proliant_systeminfo: skipped (no data)
 hp_proliant_systeminfo: skipped (no data)
 infoblox_osinfo: skipped (no data)
 infoblox_osinfo: skipped (no data)
 infoblox_systeminfo: skipped (no data)
 infoblox_systeminfo: skipped (no data)
 k8s_pod_info: skipped (no data)
 k8s_pod_info: skipped (no data)
 k8s_selector: skipped (no data)
 k8s_selector: skipped (no data)
 k8s_service_info: skipped (no data)
 k8s_service_info: skipped (no data)
 lnx_cpuinfo: skipped (no data)
 lnx_cpuinfo: skipped (no data)
 lnx_distro: skipped (no data)
 lnx_distro: skipped (no data)
 lnx_uname: skipped (no data)
 lnx_uname: skipped (no data)
 lparstat_aix: skipped (no data)
 lparstat_aix: skipped (no data)
 netapp_api_info: skipped (no data)
 netapp_api_info: skipped (no data)
 perle_chassis: skipped (no data)
 perle_chassis: skipped (no data)
 prtconf: skipped (no data)
 prtconf: skipped (no data)
 snmp_os: skipped (no data)
 snmp_os: skipped (no data)
 snmp_quantum_storage_info: skipped (no data)
 snmp_quantum_storage_info: skipped (no data)
 solaris_prtdiag: skipped (no data)
 solaris_prtdiag: skipped (no data)
 solaris_uname: skipped (no data)
 solaris_uname: skipped (no data)
 suseconnect: skipped (no data)
 suseconnect: skipped (no data)
 win_bios: skipped (no data)
 win_bios: skipped (no data)
 win_computersystem: skipped (no data)
 win_computersystem: skipped (no data)
 win_cpuinfo: skipped (no data)
 win_cpuinfo: skipped (no data)
 win_os: skipped (no data)
 win_os: skipped (no data)
 win_system: skipped (no data)
 win_system: skipped (no data)

Trying to acquire lock on /omd/sites/cmk/tmp/check_mk/status_data/checkmk.i.3fu.de
Got lock on /omd/sites/cmk/tmp/check_mk/status_data/checkmk.i.3fu.de
Releasing lock on /omd/sites/cmk/tmp/check_mk/status_data/checkmk.i.3fu.de
Released lock on /omd/sites/cmk/tmp/check_mk/status_data/checkmk.i.3fu.de
Trying to acquire lock on /omd/sites/cmk/tmp/check_mk/status_data/checkmk.i.3fu.de.gz
Got lock on /omd/sites/cmk/tmp/check_mk/status_data/checkmk.i.3fu.de.gz
Releasing lock on /omd/sites/cmk/tmp/check_mk/status_data/checkmk.i.3fu.de.gz
Released lock on /omd/sites/cmk/tmp/check_mk/status_data/checkmk.i.3fu.de.gz
Trying to acquire lock on /omd/sites/cmk/tmp/check_mk/status_data/.last
Got lock on /omd/sites/cmk/tmp/check_mk/status_data/.last
Releasing lock on /omd/sites/cmk/tmp/check_mk/status_data/.last
Released lock on /omd/sites/cmk/tmp/check_mk/status_data/.last
Piggyback file '/omd/sites/cmk/tmp/check_mk/piggyback/checkmk.i.3fu.de/proxmox2.i.3fu.de': Successfully processed from source 'proxmox2.i.3fu.de'
Piggyback file '/omd/sites/cmk/tmp/check_mk/piggyback/checkmk.i.3fu.de/proxmox.i.3fu.de': Successfully processed from source 'proxmox.i.3fu.de'
No piggyback files for '10.0.7.7'. Skip processing.
[cpu_tracking] Stop [7ff7ac827bb0 - Snapshot(process=posix.times_result(user=0.06000000000000005, system=0.0, children_user=0.0, children_system=0.0, elapsed=0.05999999865889549))]
[agent] Success, [piggyback] Successfully processed from source 'proxmox2.i.3fu.de', Successfully processed from source 'proxmox.i.3fu.de', execution time 9.6 sec | execution_time=9.620 user_time=0.070 system_time=0.010 children_user_time=0.000 children_system_time=0.000 cmk_time_agent=9.540

Hey everyone,
so I wanted to setup an active check of an internal Website. Setting it up using HTTP works as fine. When I set it to TCP Port 443, Using SSL its getting the upper error. Checking the Certificate Age works then fine. The address points to my reverseproxy. Opening the website via my Browser works as intended. What did I do wrong on this check?

Thanks in advance for your help!