例如查看docker软件的安装列表

1.安装docker软件

[root@k8s-node1 ~]# yum install docker-ce-19.03.9-3.el7 -y

2.查看具体安装包名称

[root@k8s-node1 ~]# rpm -qa|grep docker
docker-ce-19.03.9-3.el7.x86_64
docker-ce-cli-20.10.4-3.el7.x86_64

3.查看安装路径

[root@k8s-node1 ~]# rpm -ql docker-ce-19.03.9-3.el7.x86_64
/usr/bin/docker-init
/usr/bin/docker-proxy
/usr/bin/dockerd
/usr/lib/systemd/system/docker.service
/usr/lib/systemd/system/docker.socket

4.在不了解docker的日志安装位置情况下，可使用journalctl命令查看docker日志

[root@k8s-master ~]# journalctl -fu docker.service
-- Logs begin at Sun 2021-02-28 20:16:36 EST. --
Feb 28 20:28:51 k8s-master dockerd[10897]: time="2021-02-28T20:28:51.473305701-05:00" level=info msg="ignoring event" module=libcontainerd namespace=moby topic=/tasks/delete type="*events.TaskDelete"
Feb 28 20:31:07 k8s-master dockerd[10897]: time="2021-02-28T20:31:07.959128068-05:00" level=info msg="ignoring event" module=libcontainerd namespace=moby topic=/tasks/delete type="*events.TaskDelete"
Feb 28 20:32:53 k8s-master dockerd[10897]: time="2021-02-28T20:32:53.964630457-05:00" level=info msg="ignoring event" module=libcontainerd namespace=moby topic=/tasks/delete type="*events.TaskDelete"
Feb 28 20:32:54 k8s-master dockerd[10897]: time="2021-02-28T20:32:54.102040967-05:00" level=info msg="ignoring event" module=libcontainerd namespace=moby topic=/tasks/delete type="*events.TaskDelete"
Feb 28 20:32:54 k8s-master dockerd[10897]: time="2021-02-28T20:32:54.247546644-05:00" level=info msg="ignoring event" module=libcontainerd namespace=moby topic=/tasks/delete type="*events.TaskDelete"

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