docker的logs命令可以查看docker容器日志

logs命令可以查看docker容器日志

语法：

docker logs [-ft --since --tail --until]
docker logs -参数 容器ID
docker logs --tail 20 6dc540797145

参数：

• -t:显示时间戳
• -f :跟踪实时日志

–since string :显示时间之后的日志，或相对时间，如30m（显示近半个小时的日志）

–tail num :显示最近的几条日志

–until string :显示自某个时间之前的日志，或相对时间，如20m（显示半个小时之前的日志）

常用：

docker logs --tail 5 6dc540797145
docker service logs --tail 4 6dc540797145

示例：

显示容器日志

[root@bufan ~]# docker ps -a
CONTAINER ID        IMAGE        COMMAND                    CREATED                 STATUS                                PORTS             NAMES
f9445a5c3cb0         mysql          "docker-entrypoint..."   53 minutes ago        Exited (1) 53 minutes ago                        nervous_colden
6dc540797145        ubuntu       "/bin/bash"                    53 minutes ago        Up 53 minutes                                         thirsty_blackwell

[root@bufan ~]# docker logs --tail 5 f9445a5c3cb0
2020-06-23 10:54:23+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 8.0.20-1debian10 started.
2020-06-23 10:54:23+00:00 [Note] [Entrypoint]: Switching to dedicated user 'mysql'
2020-06-23 10:54:23+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 8.0.20-1debian10 started.
2020-06-23 10:54:23+00:00 [ERROR] [Entrypoint]: Database is uninitialized and password option is not specifiedYou need to specify one of MYSQL_ROOT_PASSWORD, MYSQL_ALLOW_EMPTY_PASSWORD and MYSQL_RANDOM_ROOT_PASSWORD

查看集群服务启动日志或使用名字docker service logs --tail 4 dahua_dahua

[root@HQ-V-NLPTEST-1 ~]# docker service ls
ID                             NAME                 MODE      REPLICAS       IMAGE
0i9xnfvfbbmq         dahua_dahua    replicated     1/1               dockerhub.datagrand.com/idps/auto_rule_extract:release_offline_ci_20191127_eb0f362[root@bufan ~]# docker service logs --tail 4 0i9xnfvfbbmq 
dahua_dahua.1.yq1rkubrxtwz@HQ-V-NLPTEST-2 | 2020-06-03 11:36:12,308 - None - None - INFO - start_offline_service.py:17 - start() - load processors success.
dahua_dahua.1.yq1rkubrxtwz@HQ-V-NLPTEST-2 | 2020-06-03 11:36:12,309 - None - None - INFO - start_offline_service.py:17 - start() - init workflow predict
dahua_dahua.1.yq1rkubrxtwz@HQ-V-NLPTEST-2 | 2020-06-03 11:36:12,309 - None - None - INFO - start_offline_service.py:17 - start() - init workflow train
dahua_dahua.1.yq1rkubrxtwz@HQ-V-NLPTEST-2 | 2020-06-03 11:36:12,309 - None - None - INFO - start_offline_service.py:17 - start() - engine initialize finish