Docker Events

docker system eventsDocker Documentation

Descrição

O comando docker events exibe eventos em tempo real gerados pelo Docker daemon, como criação, exclusão e alteração de containers e imagens.

Uso

docker events

Exemplo de Saída

2024-09-07T15:00:00.000000000Z container create 123abc456def "my_container"
2024-09-07T15:01:00.000000000Z container start 123abc456def
2024-09-07T15:02:00.000000000Z container stop 123abc456def

Explicações

• Tipo de Evento: Descreve o tipo de evento (por exemplo, create, start, stop).

• ID do Container: Identificador do container envolvido no evento.

• Data e Hora: Momento em que o evento ocorreu.

Quando Usar

• Monitoramento em Tempo Real: Para acompanhar eventos enquanto ocorrem, como iniciar ou parar containers.

• Diagnóstico de Problemas: Para identificar eventos específicos que podem estar causando problemas.

Laboratório

Executar o comando abaixo:

$ docker events

Em outro terminal criar o container nginx:

$ docker container run -d nginx
Unable to find image 'nginx:latest' locally
latest: Pulling from library/nginx
a2318d6c47ec: Pull complete
095d327c79ae: Pull complete
bbfaa25db775: Pull complete
7bb6fb0cfb2b: Pull complete
0723edc10c17: Pull complete
24b3fdc4d1e3: Pull complete
3122471704d5: Pull complete
Digest: sha256:04ba374043ccd2fc5c593885c0eacddebabd5ca375f9323666f28dfd5a9710e3
Status: Downloaded newer image for nginx:latest
d54042ad8e329cd4bb97e371905591b287700c64663a40cd291953060f66cf50

2024-09-07T15:10:28.485933691-03:00 image pull nginx:latest (maintainer=NGINX Docker Maintainers <[e-mail]>, name=nginx)
2024-09-07T15:10:28.669146298-03:00 container create d54042ad8e329cd4bb97e371905591b287700c64663a40cd291953060f66cf50 (image=nginx, maintainer=NGINX Docker Maintainers <[e-mail]>, name=funny_feynman)
2024-09-07T15:10:28.721091781-03:00 network connect ecf1a29e1c88dc1d5946fc08ce5b1e185becf9110983e49d5eb27a17b4fb76dc (container=d54042ad8e329cd4bb97e371905591b287700c64663a40cd291953060f66cf50, name=bridge, type=bridge)
2024-09-07T15:10:29.003630134-03:00 container start d54042ad8e329cd4bb97e371905591b287700c64663a40cd291953060f66cf50 (image=nginx, maintainer=NGINX Docker Maintainers <[e-mail]>, name=funny_feynman)

Excluir o container criado:

$ docker container ls
CONTAINER ID   IMAGE     COMMAND                  CREATED              STATUS              PORTS     NAMES
d54042ad8e32   nginx     "/docker-entrypoint.…"   About a minute ago   Up About a minute   80/tcp    funny_feynman
$ docker container rm -f d54042ad8e32
d54042ad8e32

2024-09-07T15:11:59.667905767-03:00 container kill d54042ad8e329cd4bb97e371905591b287700c64663a40cd291953060f66cf50 (image=nginx, maintainer=NGINX Docker Maintainers <[e-mail]>, name=funny_feynman, signal=9)
2024-09-07T15:12:00.140077703-03:00 network disconnect ecf1a29e1c88dc1d5946fc08ce5b1e185becf9110983e49d5eb27a17b4fb76dc (container=d54042ad8e329cd4bb97e371905591b287700c64663a40cd291953060f66cf50, name=bridge, type=bridge)
2024-09-07T15:12:00.152503035-03:00 container die d54042ad8e329cd4bb97e371905591b287700c64663a40cd291953060f66cf50 (execDuration=91, exitCode=137, image=nginx, maintainer=NGINX Docker Maintainers <[e-mail]>, name=funny_feynman)
2024-09-07T15:12:00.162092885-03:00 container destroy d54042ad8e329cd4bb97e371905591b287700c64663a40cd291953060f66cf50 (image=nginx, maintainer=NGINX Docker Maintainers <[e-mail]>, name=funny_feynman)

Baixar a imagem do MySQL:

$ docker image pull mysql
Using default tag: latest
latest: Pulling from library/mysql
6e839ac3722d: Pull complete
ad912193ad5f: Pull complete
25d13d87fd8d: Pull complete
004d383c75ef: Pull complete
6d9bbc82a0b8: Pull complete
81fec07ea550: Pull complete
83357cb2d3a5: Pull complete
8ffe968b82c1: Pull complete
30dfd9a7ed57: Pull complete
35844ae33cbe: Pull complete
Digest: sha256:86cdfe832c81e39a89cfb63c3fde1683c41cc00ef91e67653c9c1df0ba80f454
Status: Downloaded newer image for mysql:latest
docker.io/library/mysql:latest

2024-09-07T15:14:49.333744085-03:00 image pull mysql:latest (name=mysql)

Exclusão da imagem mysql:

$ docker image rm mysql:latest
Untagged: mysql:latest
Untagged: mysql@sha256:86cdfe832c81e39a89cfb63c3fde1683c41cc00ef91e67653c9c1df0ba80f454
Deleted: sha256:a82a8f162e188e0df15b0d2d90c6e9e973af8e88a6cb74b8052122ae5e02325c
Deleted: sha256:5da6d4af0083ef5a3c34a897318f812bf2287df1d20324662bb462d9adc9a9f4
Deleted: sha256:c2517597cb75237e131a560ff4fd06b26b9bbe2dc84351258385d20f6bb3d141
Deleted: sha256:87392ed73e360ff3cdf9cf6f83da99054fa43703d9c68e8ee1cb908defa6c27b
Deleted: sha256:652f8d3f70cb386cbaa61ed1dd578b6485ca5f5bea8dceedd02176657a57d700
Deleted: sha256:aeb66573c46a113dc637070d9b6e5ad1af5a9629c706271013b658a04532c643
Deleted: sha256:c103d3c7862eec5cfc0aa42df27e8ef2e441467c94a64e282d44171245497c33
Deleted: sha256:bfee82506d3915fd33091e987014bf0fa4fb5079b2c64f8c4c82cf9289b87096
Deleted: sha256:f829026b115edfb645697aa370a1dff76055ace8a213d83e559f65699d9555ce
Deleted: sha256:28ff378667a9659a8bafabb2a3cca8d125c66c1cd7f1e8ca2797cbf83e511960
Deleted: sha256:3cf436755aff907c2c6a6fd9202eab0da03f0b331f8d1363078a6534d95608a0

2024-09-07T15:16:09.305875050-03:00 image untag sha256:a82a8f162e188e0df15b0d2d90c6e9e973af8e88a6cb74b8052122ae5e02325c (name=sha256:a82a8f162e188e0df15b0d2d90c6e9e973af8e88a6cb74b8052122ae5e02325c)
2024-09-07T15:16:09.592376540-03:00 image delete sha256:a82a8f162e188e0df15b0d2d90c6e9e973af8e88a6cb74b8052122ae5e02325c (name=sha256:a82a8f162e188e0df15b0d2d90c6e9e973af8e88a6cb74b8052122ae5e02325c)

Usos comuns:

# Mostra eventos desde as últimas 2 horas
$ docker events --since 2h

# Mostra eventos até os últimos 30 minutos
$ docker events --until 30m

# Filtra eventos pelo tipo 'create'
$ docker events --filter event=create

# Filtra eventos pelo tipo 'create' desde as últimas 2 horas
$ docker events --filter event=create --since 2h

# Filtra eventos pelo tipo 'image'
$ docker events --filter type=image

# Filtra eventos pelo tipo 'network' e evento 'create'
$ docker events --filter type=network --filter event=create