[root@iz2zeaet7s13lfkc8r3e2kz /]# docker pull nginx #下载
Using default tag: latest
latest: Pulling from library/nginx
afb6ec6fdc1c: Pull complete
b90c53a0b692: Pull complete
11fa52a0fdc0: Pull complete
Digest: sha256:30dfa439718a17baafefadf16c5e7c9d0a1cde97b4fd84f63b69e13513be7097
Status: Downloaded newer image for nginx:latest
docker.io/library/nginx:latest
[root@iz2zeaet7s13lfkc8r3e2kz /]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
nginx latest 9beeba249f3e 7 days ago 127MB
centos latest 470671670cac 4 months ago 237MB
# 后台启动nginx，名字为nginx01 映射到本机ip：9000
[root@iz2zeaet7s13lfkc8r3e2kz /]# docker run -d --name nginx01 -p 9000:80 nginx
d7da72bce53a84882b13595a2ce35d7f34c0dc217d3d3f396210c3a3d30bb4a4
[root@iz2zeaet7s13lfkc8r3e2kz /]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
d7da72bce53a nginx "nginx -g 'daemon of…" 9 seconds ago Up 7 seconds 0.0.0.0:9000->80/tcp nginx01
# 查看
[root@iz2zeaet7s13lfkc8r3e2kz /]# curl localhost:9000
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
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
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>
#进入容器
[root@iz2zeaet7s13lfkc8r3e2kz /]# docker exec -it nginx01 /bin/bash
root@d7da72bce53a:/# whereis nginx
nginx: /usr/sbin/nginx /usr/lib/nginx /etc/nginx /usr/share/nginx
root@d7da72bce53a:/# cd /etc/nginx
root@d7da72bce53a:/etc/nginx# ls
conf.d koi-utf mime.types nginx.conf uwsgi_params
fastcgi_params koi-win modules scgi_params win-utf
root@d7da72bce53a:/etc/nginx#
端口暴露的概念
#官方的使用
docker run -it --rm tomcat:9.0
#我们之前的启动都是后台，停止了容器之后，容器还是可以查到
# docker run -it --rm tomcat:9.0 官方这种方式一般用来测试，用完及删
#下载在启动
docker pull tomcat:9.0
# 测试
[root@iz2zeaet7s13lfkc8r3e2kz /]# docker pull tomcat:9.0
9.0: Pulling from library/tomcat
Digest: sha256:ce753be7b61d86f877fe5065eb20c23491f783f283f25f6914ba769fee57886b
Status: Image is up to date for tomcat:9.0
docker.io/library/tomcat:9.0
[root@iz2zeaet7s13lfkc8r3e2kz /]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
tomcat 9.0 1b6b1fe7261e 6 days ago 647MB
nginx latest 9beeba249f3e 7 days ago 127MB
centos latest 470671670cac 4 months ago 237MB
#启动
[root@iz2zeaet7s13lfkc8r3e2kz /]# docker run -d -p 9000:8080 --name tomcat01 tomcat
#进入容器
[root@iz2zeaet7s13lfkc8r3e2kz /]# docker exec -it tomcat01 /bin/bash
#发现问题：1.linux命令少了，2.没有webapps，阿里云镜像的原因。默认是最小的镜像，所有不重要的都剔除掉。
# 保证最小可运行的环境！
#所有的文件都在webapps.dist下，复制到webapps下就可以访问tomcat
cp webapps.dist/* webapps
# es 暴露的端口很多！
# es 十分的耗内存
# es 的数据一般需要放置到安全目录！挂载
# --net somenetwork ? 网络配置
#启动
docker run -d --name elasticsearch -p 9200:9200 -p 9300:9300 -e"discovery.type=single-node" elasticsearch:7.6.2
#启动了 linux就卡住了 docker stats 查看cpu的状态 慎重启动！！！
#es 是十分耗内存 1.xg 服务器是1核2g！就卡的要死要死的！！！
# 增加内存限制，修改配置文件 -e 环境配置修改
docker run -d --name elasticsearch02 -p 9200:9200 -p 9300:9300 -e"discovery.type=single-node" -e ES_JAVA_OPTS="-Xms64m -Xmx512m" elasticsearch:7.6.2
查看docker stats
#访问
[root@iz2zeaet7s13lfkc8r3e2kz /]# curl localhost:9200
{
"name" : "ccada763b6c0",
"cluster_name" : "docker-cluster",
"cluster_uuid" : "gVJt2oA6T1CpScqqRXhaMw",
"version" : {
"number" : "7.6.2",
"build_flavor" : "default",
"build_type" : "docker",
"build_hash" : "ef48eb35cf30adf4db14086e8aabd07ef6fb113f",
"build_date" : "2020-03-26T06:34:37.794943Z",
"build_snapshot" : false,
"lucene_version" : "8.4.0",
"minimum_wire_compatibility_version" : "6.8.0",
"minimum_index_compatibility_version" : "6.0.0-beta1"
},
"tagline" : "You Know, for Search"
}
可视化
docker run -d -p 8088:9000 \ --restart=always -v /var/run/docker.sock:/var/run/docker.sock --privileged=true portainer/portainer
什么是portainer？
docker图形化界面管理工具！提供一个后台面板供我们操作！
docker run -d -p 8088:9000 --restart=always -v /var/run/docker.sock:/var/run/docker.sock --privileged=true portainer/portainer
[root@iz2zeaet7s13lfkc8r3e2kz /]# docker run -d -p 8088:9000 --restart=always -v /var/run/docker.sock:/var/run/docker.sock --privileged=true portainer/portainer
Unable to find image 'portainer/portainer:latest' locally
latest: Pulling from portainer/portainer
d1e017099d17: Pull complete
a7dca5b5a9e8: Pull complete
Digest: sha256:4ae7f14330b56ffc8728e63d355bc4bc7381417fa45ba0597e5dd32682901080
Status: Downloaded newer image for portainer/portainer:latest
78d8db0506212d51fc673896e6db289c03bb5e1f287c2bab9d5d230faedab7d2
[root@iz2zeaet7s13lfkc8r3e2kz /]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
tomcat latest 1b6b1fe7261e 6 days ago 647MB
nginx latest 9beeba249f3e 7 days ago 127MB
elasticsearch 7.6.2 f29a1ee41030 8 weeks ago 791MB
portainer/portainer latest 2869fc110bf7 2 months ago 78.6MB
centos latest 470671670cac 4 months ago 237MB
访问测试