实习四十：部署project_exam_system项目—

实习四十：部署project_exam_system项目——及容器的编排

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（一）安装docker、编辑daemon.json文件、安装docker-compose编排容器、启动docker
1.环境准备

[root@docker--1 ~]# rz -E

rz waiting to receive.

[root@docker--1 ~]# ls

anaconda-ks.cfg docker.sh

[root@docker--1 ~]# source docker.sh

[root@docker--1 ~]# vim /etc/docker/daemon.json

[root@docker--1 ~]# vim /usr/lib/systemd/system/docker.service

[root@docker--1 ~]# systemctl daemon-reload

[root@docker--1 ~]# systemctl start docker

脚本内容如下：

cat << EOF | tee /etc/modules-load.d/k8s.conf
overlay
br_netfilter
EOF

modprobe overlay

modprobe br_netfilter

cat << EOF | tee /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.ipv4.ip_forward = 1
EOF

sysctl --system

yum install -y yum-utils device-mapper-persistent-data lvm2

yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

yum install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin -y

2.普通部署

按照正常步骤安装docker，这里可参考前面的笔记

3.拉取nginx镜像

[root@docker3 ~]# docker pull nginx

Using default tag: latest

latest: Pulling from library/nginx

Digest: sha256:447a8665cc1dab95b1ca778e162215839ccbb9189104c79d7ec3a81e14577add

Status: Image is up to date for nginx:latest

docker.io/library/nginx:latest

4.查看镜像

[root@docker3 ~]# docker images

REPOSITORY TAG IMAGE ID CREATED SIZE

nginx latest 5ef79149e0ec 2 weeks ago 188MB

5.创建nginx容器

[root@docker--1 ~]# docker run -itd -p80:80 nginx:latest a9200f608c60aa1c8827b5562b7906d543d48e38c06f76bdb1b702ce73209117

6.查看容器

[root@docker--1 ~]# docker ps

CONTAINER ID IMAGE COMMAND CREATED STATUS NAMES

a9200f608c60 nginx:latest "/docker-entrypoint.…" 19 seconds ago Up 17 seconds cp stupefied_feistel

进行验证

[root@docker--1 ~]# curl localhost

<!DOCTYPE html>

<html>

<head>

<title>Welcome to nginx!</title>

<style>

html { color-scheme: light dark; }

body { width: 35em; margin: 0 auto;

font-family: Tahoma, Verdana, Arial, sans-serif; }

</style>

</head>

<body>

<h1>Welcome to nginx!</h1>

<p>If you see this page, the nginx web server is successfully installed and

working. Further configuration is required.</p>

<p>For online documentation and support please refer to

nginx.org.<br/>

Commercial support is available at

nginx.com.</p>

<p><em>Thank you for using nginx.</em></p>

</body>

</html>