No bother,
Output of netstat -anp |grep 80
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
udp6 0 0 fe80::212

fecc:123 :::* -
unix 2 [ ] DGRAM 13141 808/systemd /run/user/1000/systemd/notify
unix 2 [ ACC ] STREAM LISTENING 13142 808/systemd /run/user/1000/systemd/private
unix 2 [ ACC ] STREAM LISTENING 13146 808/systemd /run/user/1000/bus
unix 2 [ ACC ] STREAM LISTENING 13147 808/systemd /run/user/1000/pulse/native
unix 2 [ ] DGRAM 11801 -
unix 3 [ ] STREAM CONNECTED 10808 - /run/dbus/system_bus_socket
unix 3 [ ] STREAM CONNECTED 10805 -
unix 2 [ ] DGRAM 10804 -
unix 3 [ ] STREAM CONNECTED 10806 -
unix 3 [ ] STREAM CONNECTED 10809 - /run/dbus/system_bus_socket
unix 3 [ ] STREAM CONNECTED 11805 - /run/systemd/journal/stdout
unix 3 [ ] STREAM CONNECTED 10803 -
unix 3 [ ] STREAM CONNECTED 13123 808/systemd
unix 3 [ ] STREAM CONNECTED 1780 -
unix 3 [ ] STREAM CONNECTED 10807 - /run/dbus/system_bus_socket
unix 3 [ ] STREAM CONNECTED 12580 -
unix 2 [ ] DGRAM 13133 808/systemd
[dbrennan@dbunix ~]$
Output of /var/nagios.log also
1457518891] Nagios 4.1.1 starting... (PID=8527)
[1457518891] Local time is Wed Mar 09 10:21:31 GMT 2016
[1457518891] LOG VERSION: 2.0
[1457518891] qh: Socket '/var/nagios/rw/nagios.qh' successfully initialized
[1457518891] qh: core query handler registered
[1457518891] nerd: Channel hostchecks registered successfully
[1457518891] nerd: Channel servicechecks registered successfully
[1457518891] nerd: Channel opathchecks registered successfully
[1457518891] nerd: Fully initialized and ready to rock!
[1457518891] wproc: Successfully registered manager as @wproc with query handler
[1457518891] wproc: Registry request: name=Core Worker 8528;pid=8528
[1457518891] wproc: Registry request: name=Core Worker 8531;pid=8531
[1457518891] wproc: Registry request: name=Core Worker 8530;pid=8530
[1457518891] wproc: Registry request: name=Core Worker 8529;pid=8529
[1457518891] Successfully launched command file worker with pid 8532
[1457518891] HOST ALERT: localhost;DOWN;SOFT;1;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ping, ...) failed. errno is 2: No such file or directory
[1457518928] SERVICE ALERT: localhost;Current Load;CRITICAL;SOFT;1;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_load, ...) failed. errno is 2: No such file or directory
[1457518928] HOST ALERT: localhost;DOWN;SOFT;2;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ping, ...) failed. errno is 2: No such file or directory
[1457518966] SERVICE ALERT: localhost;Current Users;CRITICAL;SOFT;1;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_users, ...) failed. errno is 2: No such file or directory
[1457518966] HOST ALERT: localhost;DOWN;SOFT;3;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ping, ...) failed. errno is 2: No such file or directory
[1457518988] SERVICE ALERT: localhost;Current Load;CRITICAL;SOFT;2;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_load, ...) failed. errno is 2: No such file or directory
[1457518988] HOST ALERT: localhost;DOWN;SOFT;4;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ping, ...) failed. errno is 2: No such file or directory
[1457518993] Caught SIGTERM, shutting down...
[1457518994] Successfully shutdown... (PID=8527)
[1457518994] Event broker module 'NERD' deinitialized successfully.
[1457519580] Nagios 4.1.1 starting... (PID=2119)
[1457519580] Local time is Wed Mar 09 10:33:00 GMT 2016
[1457519580] LOG VERSION: 2.0
[1457519580] qh: Socket '/var/nagios/rw/nagios.qh' successfully initialized
[1457519580] qh: core query handler registered
[1457519580] nerd: Channel hostchecks registered successfully
[1457519580] nerd: Channel servicechecks registered successfully
[1457519580] nerd: Channel opathchecks registered successfully
[1457519580] nerd: Fully initialized and ready to rock!
[1457519580] wproc: Successfully registered manager as @wproc with query handler
[1457519580] wproc: Registry request: name=Core Worker 2135;pid=2135
[1457519580] wproc: Registry request: name=Core Worker 2134;pid=2134
[1457519580] wproc: Registry request: name=Core Worker 2133;pid=2133
[1457519580] wproc: Registry request: name=Core Worker 2132;pid=2132
[1457519580] Successfully launched command file worker with pid 2150
[1457519580] HOST ALERT: localhost;DOWN;SOFT;2;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ping, ...) failed. errno is 2: No such file or directory
[1457519617] SERVICE ALERT: localhost;Current Load;CRITICAL;SOFT;3;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_load, ...) failed. errno is 2: No such file or directory
[1457519617] HOST ALERT: localhost;DOWN;SOFT;3;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ping, ...) failed. errno is 2: No such file or directory
[1457519623] SERVICE ALERT: localhost;Current Users;CRITICAL;SOFT;2;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_users, ...) failed. errno is 2: No such file or directory
[1457519677] SERVICE ALERT: localhost;Current Load;CRITICAL;HARD;4;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_load, ...) failed. errno is 2: No such file or directory
[1457519677] HOST ALERT: localhost;DOWN;SOFT;4;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ping, ...) failed. errno is 2: No such file or directory
[1457519683] SERVICE ALERT: localhost;Current Users;CRITICAL;SOFT;3;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_users, ...) failed. errno is 2: No such file or directory
[1457519692] SERVICE ALERT: localhost;HTTP;CRITICAL;SOFT;1;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_http, ...) failed. errno is 2: No such file or directory
[1457519692] HOST ALERT: localhost;DOWN;SOFT;5;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ping, ...) failed. errno is 2: No such file or directory
[1457519730] SERVICE ALERT: localhost;PING;CRITICAL;SOFT;1;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ping, ...) failed. errno is 2: No such file or directory
[1457519730] HOST ALERT: localhost;DOWN;SOFT;6;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ping, ...) failed. errno is 2: No such file or directory
[1457519743] SERVICE ALERT: localhost;Current Users;CRITICAL;HARD;4;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_users, ...) failed. errno is 2: No such file or directory
[1457519752] SERVICE ALERT: localhost;HTTP;CRITICAL;SOFT;2;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_http, ...) failed. errno is 2: No such file or directory
[1457519752] HOST ALERT: localhost;DOWN;SOFT;7;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ping, ...) failed. errno is 2: No such file or directory
[1457519767] SERVICE ALERT: localhost;Root Partition;CRITICAL;SOFT;1;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_disk, ...) failed. errno is 2: No such file or directory
[1457519767] HOST ALERT: localhost;DOWN;SOFT;8;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ping, ...) failed. errno is 2: No such file or directory
[1457519790] SERVICE ALERT: localhost;PING;CRITICAL;SOFT;2;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ping, ...) failed. errno is 2: No such file or directory
[1457519790] HOST ALERT: localhost;DOWN;SOFT;9;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ping, ...) failed. errno is 2: No such file or directory
[1457519805] SERVICE ALERT: localhost;SSH;CRITICAL;SOFT;1;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ssh, ...) failed. errno is 2: No such file or directory
[1457519805] HOST ALERT: localhost;DOWN;HARD;10;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ping, ...) failed. errno is 2: No such file or directory
[1457519805] HOST NOTIFICATION: nagiosadmin;localhost;DOWN;notify-host-by-email;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ping, ...) failed. errno is 2: No such file or directory
[1457519812] SERVICE ALERT: localhost;HTTP;CRITICAL;SOFT;3;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_http, ...) failed. errno is 2: No such file or directory
[1457519827] SERVICE ALERT: localhost;Root Partition;CRITICAL;SOFT;2;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_disk, ...) failed. errno is 2: No such file or directory
[1457519842] SERVICE ALERT: localhost;Swap Usage;CRITICAL;SOFT;1;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_swap, ...) failed. errno is 2: No such file or directory
[1457519850] SERVICE ALERT: localhost;PING;CRITICAL;SOFT;3;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ping, ...) failed. errno is 2: No such file or directory
[1457519865] SERVICE ALERT: localhost;SSH;CRITICAL;SOFT;2;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ssh, ...) failed. errno is 2: No such file or directory
[1457519872] SERVICE ALERT: localhost;HTTP;CRITICAL;HARD;4;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_http, ...) failed. errno is 2: No such file or directory
[1457519880] SERVICE ALERT: localhost;Total Processes;CRITICAL;SOFT;1;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_procs, ...) failed. errno is 2: No such file or directory
[1457519887] SERVICE ALERT: localhost;Root Partition;CRITICAL;SOFT;3;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_disk, ...) failed. errno is 2: No such file or directory
[1457519902] SERVICE ALERT: localhost;Swap Usage;CRITICAL;SOFT;2;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_swap, ...) failed. errno is 2: No such file or directory
[1457519910] SERVICE ALERT: localhost;PING;CRITICAL;HARD;4;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ping, ...) failed. errno is 2: No such file or directory
[1457519925] SERVICE ALERT: localhost;SSH;CRITICAL;SOFT;3;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ssh, ...) failed. errno is 2: No such file or directory
[1457519940] SERVICE ALERT: localhost;Total Processes;CRITICAL;SOFT;2;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_procs, ...) failed. errno is 2: No such file or directory
[1457519947] SERVICE ALERT: localhost;Root Partition;CRITICAL;HARD;4;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_disk, ...) failed. errno is 2: No such file or directory
[1457519962] SERVICE ALERT: localhost;Swap Usage;CRITICAL;SOFT;3;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_swap, ...) failed. errno is 2: No such file or directory
[1457519985] SERVICE ALERT: localhost;SSH;CRITICAL;HARD;4;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ssh, ...) failed. errno is 2: No such file or directory
[1457520000] SERVICE ALERT: localhost;Total Processes;CRITICAL;SOFT;3;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_procs, ...) failed. errno is 2: No such file or directory
[1457520022] SERVICE ALERT: localhost;Swap Usage;CRITICAL;HARD;4;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_swap, ...) failed. errno is 2: No such file or directory
[1457520060] SERVICE ALERT: localhost;Total Processes;CRITICAL;HARD;4;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_procs, ...) failed. errno is 2: No such file or directory
[1457523180] Auto-save of retention data completed successfully.
[1457524630] Caught SIGTERM, shutting down...
[1457524630] Successfully shutdown... (PID=2119)
[1457524630] Event broker module 'NERD' deinitialized successfully.
[1457524630] Nagios 4.1.1 starting... (PID=9539)
[1457524630] Local time is Wed Mar 09 11:57:10 GMT 2016
[1457524630] LOG VERSION: 2.0
[1457524630] qh: Socket '/var/nagios/rw/nagios.qh' successfully initialized
[1457524630] qh: core query handler registered
[1457524630] nerd: Channel hostchecks registered successfully
[1457524630] nerd: Channel servicechecks registered successfully
[1457524630] nerd: Channel opathchecks registered successfully
[1457524630] nerd: Fully initialized and ready to rock!
[1457524630] wproc: Successfully registered manager as @wproc with query handler
[1457524630] wproc: Registry request: name=Core Worker 9541;pid=9541
[1457524630] wproc: Registry request: name=Core Worker 9543;pid=9543
[1457524630] wproc: Registry request: name=Core Worker 9542;pid=9542
[1457524630] wproc: Registry request: name=Core Worker 9540;pid=9540
[1457524630] Successfully launched command file worker with pid 9549
[1457527072] HOST NOTIFICATION: nagiosadmin;localhost;DOWN;notify-host-by-email;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ping, ...) failed. errno is 2: No such file or directory
[1457528230] Auto-save of retention data completed successfully.
[1457531830] Auto-save of retention data completed successfully.
[1457534310] HOST NOTIFICATION: nagiosadmin;localhost;DOWN;notify-host-by-email;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ping, ...) failed. errno is 2: No such file or directory
[1457535430] Auto-save of retention data completed successfully.
[1457539030] Auto-save of retention data completed successfully.
[1457541510] HOST NOTIFICATION: nagiosadmin;localhost;DOWN;notify-host-by-email;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ping, ...) failed. errno is 2: No such file or directory
[1457543056] Warning: A system time change of 1100 seconds (0d 0h 18m 20s forwards in time) has been detected. Compensating...
[1457543730] Auto-save of retention data completed successfully.
[1457544724] Caught SIGTERM, shutting down...
[1457544724] Successfully shutdown... (PID=9539)
[1457544724] Event broker module 'NERD' deinitialized successfully.
[1457693083] Nagios 4.1.1 starting... (PID=7644)
[1457693083] Local time is Fri Mar 11 10:44:43 GMT 2016
[1457693083] LOG VERSION: 2.0
[1457693083] qh: Socket '/var/nagios/rw/nagios.qh' successfully initialized
[1457693083] qh: core query handler registered
[1457693083] nerd: Channel hostchecks registered successfully
[1457693083] nerd: Channel servicechecks registered successfully
[1457693083] nerd: Channel opathchecks registered successfully
[1457693083] nerd: Fully initialized and ready to rock!
[1457693083] wproc: Successfully registered manager as @wproc with query handler
[1457693083] wproc: Registry request: name=Core Worker 7646;pid=7646
[1457693083] wproc: Registry request: name=Core Worker 7645;pid=7645
[1457693083] wproc: Registry request: name=Core Worker 7648;pid=7648
[1457693083] wproc: Registry request: name=Core Worker 7647;pid=7647
[1457693083] Successfully launched command file worker with pid 7651
[1457693083] HOST NOTIFICATION: nagiosadmin;localhost;DOWN;notify-host-by-email;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ping, ...) failed. errno is 2: No such file or directory
[1457695952] Caught SIGTERM, shutting down...
[1457695952] Successfully shutdown... (PID=7644)
[1457695952] Event broker module 'NERD' deinitialized successfully.
[1457695952] Nagios 4.1.1 starting... (PID=11281)
[1457695952] Local time is Fri Mar 11 11:32:32 GMT 2016
[1457695952] LOG VERSION: 2.0
[1457695952] qh: Socket '/var/nagios/rw/nagios.qh' successfully initialized
[1457695952] qh: core query handler registered
[1457695952] nerd: Channel hostchecks registered successfully
[1457695952] nerd: Channel servicechecks registered successfully
[1457695952] nerd: Channel opathchecks registered successfully
[1457695952] nerd: Fully initialized and ready to rock!
[1457695952] wproc: Successfully registered manager as @wproc with query handler
[1457695952] wproc: Registry request: name=Core Worker 11282;pid=11282
[1457695952] wproc: Registry request: name=Core Worker 11285;pid=11285
[1457695952] wproc: Registry request: name=Core Worker 11283;pid=11283
[1457695952] wproc: Registry request: name=Core Worker 11284;pid=11284
[1457695952] Successfully launched command file worker with pid 11286
[1457699552] Auto-save of retention data completed successfully.
[1457700319] HOST NOTIFICATION: nagiosadmin;localhost;DOWN;notify-host-by-email;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ping, ...) failed. errno is 2: No such file or directory
[1457703152] Auto-save of retention data completed successfully.
[1457706752] Auto-save of retention data completed successfully.
[1457707519] HOST NOTIFICATION: nagiosadmin;localhost;DOWN;notify-host-by-email;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ping, ...) failed. errno is 2: No such file or directory
[1457710352] Auto-save of retention data completed successfully.
[1457713034] Caught SIGTERM, shutting down...
[1457713034] Successfully shutdown... (PID=11281)
[1457713034] Event broker module 'NERD' deinitialized successfully.
[1458120556] Nagios 4.1.1 starting... (PID=17461)
[1458120556] Local time is Wed Mar 16 09:29:16 GMT 2016
[1458120556] LOG VERSION: 2.0
[1458120556] qh: Socket '/var/nagios/rw/nagios.qh' successfully initialized
[1458120556] qh: core query handler registered
[1458120556] nerd: Channel hostchecks registered successfully
[1458120556] nerd: Channel servicechecks registered successfully
[1458120556] nerd: Channel opathchecks registered successfully
[1458120556] nerd: Fully initialized and ready to rock!
[1458120556] wproc: Successfully registered manager as @wproc with query handler
[1458120556] wproc: Registry request: name=Core Worker 17462;pid=17462
[1458120556] wproc: Registry request: name=Core Worker 17465;pid=17465
[1458120556] wproc: Registry request: name=Core Worker 17463;pid=17463
[1458120556] wproc: Registry request: name=Core Worker 17464;pid=17464
[1458120557] Successfully launched command file worker with pid 17466
[1458120557] HOST NOTIFICATION: nagiosadmin;localhost;DOWN;notify-host-by-email;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ping, ...) failed. errno is 2: No such file or directory
[1458124156] Auto-save of retention data completed successfully.
[1458125528] Caught SIGTERM, shutting down...
[1458125529] Successfully shutdown... (PID=17461)
[1458125529] Event broker module 'NERD' deinitialized successfully.
[1458125529] Nagios 4.1.1 starting... (PID=30357)
[1458125529] Local time is Wed Mar 16 10:52:09 GMT 2016
[1458125529] LOG VERSION: 2.0
[1458125529] qh: Socket '/var/nagios/rw/nagios.qh' successfully initialized
[1458125529] qh: core query handler registered
[1458125529] nerd: Channel hostchecks registered successfully
[1458125529] nerd: Channel servicechecks registered successfully
[1458125529] nerd: Channel opathchecks registered successfully
[1458125529] nerd: Fully initialized and ready to rock!
[1458125529] wproc: Successfully registered manager as @wproc with query handler
[1458125529] wproc: Registry request: name=Core Worker 30358;pid=30358
[1458125529] wproc: Registry request: name=Core Worker 30361;pid=30361
[1458125529] wproc: Registry request: name=Core Worker 30359;pid=30359
[1458125529] wproc: Registry request: name=Core Worker 30360;pid=30360
[1458125529] Successfully launched command file worker with pid 30366
[1458127792] HOST NOTIFICATION: nagiosadmin;localhost;DOWN;notify-host-by-email;(No output on stdout) stderr: execvp(/usr/share/nagios/libexec/check_ping, ...) failed. errno is 2: No such file or directory
[1458129129] Auto-save of retention data completed successfully.
[1458132356] Caught SIGTERM, shutting down...
[1458132357] Successfully shutdown... (PID=30357)
[1458132357] Event broker module 'NERD' deinitialized successfully.