Docker Logging: Unterschied zwischen den Versionen

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  docker logs [OPTIONS] NAME
 
  docker logs [OPTIONS] NAME
 
  docker service logs [OPTIONS] NAME
 
  docker service logs [OPTIONS] NAME
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*Docker verwendet einen JSON-Protokolltreiber, der Protokolle im JSON-Format in eine containerspezifische Datei auf dem Host schreibt.
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*Normalerweise werden Standard Output und Standard Error dem Docker-log übergeben.
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*Normalerweise werden Standard Output und Standard Error in dem Docker-log übergeben.
 
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=Was ist ein Protokolltreiber?=
 
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*Protokollierungstreiber sind Mechanismen von Docker zum Sammeln von Daten aus laufenden Containern und Diensten.
 
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*Immer wenn ein neuer Container erstellt wird, stellt Docker automatisch den JSON-Datei-Protokolltreiber bereit, wenn keine andere Protokolltreiberoption angegeben wurde.  
 
  
  

Version vom 13. Februar 2023, 14:47 Uhr

Standard Syntax

  • Der Standard Syntax sieht wie folgt aus.
docker logs [OPTIONS] NAME
docker service logs [OPTIONS] NAME
  • Normalerweise werden Standard Output und Standard Error dem Docker-log übergeben.


Beispiel fürs anzeigen verschiedener Docker Informationen

  • Containerprotokolle anzeigen:
docker logs nginx

/docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration
/docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d/
/docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh
10-listen-on-ipv6-by-default.sh: info: Getting the checksum of /etc/nginx/conf.d/default.conf
10-listen-on-ipv6-by-default.sh: info: Enabled listen on IPv6 in /etc/nginx/conf.d/default.conf
/docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh
/docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh
/docker-entrypoint.sh: Configuration complete; ready for start up
2023/02/13 07:11:47 [notice] 1#1: using the "epoll" event method
2023/02/13 07:11:47 [notice] 1#1: nginx/1.23.3
2023/02/13 07:11:47 [notice] 1#1: built by gcc 10.2.1 20210110 (Debian 10.2.1-6) 
2023/02/13 07:11:47 [notice] 1#1: OS: Linux 5.4.0-137-generic
2023/02/13 07:11:47 [notice] 1#1: getrlimit(RLIMIT_NOFILE): 1048576:1048576
2023/02/13 07:11:47 [notice] 1#1: start worker processes
2023/02/13 07:11:47 [notice] 1#1: start worker process 29
2023/02/13 07:11:47 [notice] 1#1: start worker process 30
2023/02/13 07:11:47 [notice] 1#1: start worker process 31
2023/02/13 07:11:47 [notice] 1#1: start worker process 32
2023/02/13 07:11:47 [notice] 1#1: start worker process 33
2023/02/13 07:11:47 [notice] 1#1: start worker process 34
2023/02/13 07:11:47 [notice] 1#1: start worker process 35
2023/02/13 07:11:47 [notice] 1#1: start worker process 36
  • Nur neue Protokolle anzeigen:
docker logs -f nginx

/docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration
/docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d/
/docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh
10-listen-on-ipv6-by-default.sh: info: Getting the checksum of /etc/nginx/conf.d/default.conf
10-listen-on-ipv6-by-default.sh: info: Enabled listen on IPv6 in /etc/nginx/conf.d/default.conf
/docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh
/docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh
/docker-entrypoint.sh: Configuration complete; ready for start up
2023/02/13 07:11:47 [notice] 1#1: using the "epoll" event method
2023/02/13 07:11:47 [notice] 1#1: nginx/1.23.3
2023/02/13 07:11:47 [notice] 1#1: built by gcc 10.2.1 20210110 (Debian 10.2.1-6) 
2023/02/13 07:11:47 [notice] 1#1: OS: Linux 5.4.0-137-generic
2023/02/13 07:11:47 [notice] 1#1: getrlimit(RLIMIT_NOFILE): 1048576:1048576
2023/02/13 07:11:47 [notice] 1#1: start worker processes
2023/02/13 07:11:47 [notice] 1#1: start worker process 29
2023/02/13 07:11:47 [notice] 1#1: start worker process 30
2023/02/13 07:11:47 [notice] 1#1: start worker process 31
2023/02/13 07:11:47 [notice] 1#1: start worker process 32
2023/02/13 07:11:47 [notice] 1#1: start worker process 33
2023/02/13 07:11:47 [notice] 1#1: start worker process 34
2023/02/13 07:11:47 [notice] 1#1: start worker process 35
2023/02/13 07:11:47 [notice] 1#1: start worker process 36
  • CPU- und Speicherauslastung anzeigen:
docker stats

CONTAINER ID   NAME      CPU %     MEM USAGE / LIMIT     MEM %     NET I/O       BLOCK I/O        PIDS
42f4afd9ad3d   nginx     0.00%     9.316MiB / 11.46GiB   0.08%     1.53kB / 0B   4.1kB / 8.19kB   9
  • CPU- und Speicherauslastung für bestimmte Container anzeigen:
docker stats nginx

CONTAINER ID   NAME      CPU %     MEM USAGE / LIMIT     MEM %     NET I/O       BLOCK I/O        PIDS
42f4afd9ad3d   nginx     0.00%     9.316MiB / 11.46GiB   0.08%     1.53kB / 0B   4.1kB / 8.19kB   9
  • Laufende Prozesse in einem Container anzeigen:
docker top nginx

UID                 PID                 PPID                C                   STIME               TTY                 TIME                CMD
root                112223              112199              0                   07:11               ?                   00:00:00            nginx: master process nginx -g daemon off;
systemd+            112291              112223              0                   07:11               ?                   00:00:00            nginx: worker process
systemd+            112292              112223              0                   07:11               ?                   00:00:00            nginx: worker process
systemd+            112293              112223              0                   07:11               ?                   00:00:00            nginx: worker process
systemd+            112294              112223              0                   07:11               ?                   00:00:00            nginx: worker process
systemd+            112295              112223              0                   07:11               ?                   00:00:00            nginx: worker process
systemd+            112296              112223              0                   07:11               ?                   00:00:00            nginx: worker process
systemd+            112297              112223              0                   07:11               ?                   00:00:00            nginx: worker process
systemd+            112298              112223              0                   07:11               ?                   00:00:00            nginx: worker process
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