下载tomcat8镜像
[root@localhost ~]# docker search tomcat8 name description stars official automated ashince/tomcat8 tomcat gui manager pre-configured docker ima… 5 podbox/tomcat8 2 [ok]
这个tomcat包含了jdk而且启动了可以直接访问，自己启动了8080端口
[root@localhost ~]# docker pull ashince/tomcat8 using default tag: latest latest: pulling from ashince/tomcat8 06b22ddb1913: pulling fs layer 336c28b408ed: pull complete 1f3e6b8d80c3: pull complete [root@localhost ~]# docker images repository tag image id created size nginx latest 2622e6cca7eb 2 weeks ago 132mb ashince/tomcat8 latest 02aedead27dd 22 months ago 314mb 启动一个nginx容器和两个tomcat容器 [root@localhost ~]# docker run -itd -p 8080:8080 ashince/tomcat8 3e3f2aabe67de7ee3f4b6d62176e21aaa9d2302922845cb08ad37af7146b13c5 [root@localhost ~]# docker run -itd -p 8081:8080 ashince/tomcat8 644d59711c805a626b7c1c219aa018f744098a14dd41e54744d6b13e7ba66a2f [root@localhost ~]# docker ps container id image command created status ports names cca55c4ad919 ashince/tomcat8 "catalina.sh run" about a minute ago up about a minute 0.0.0.0:8081->8080/tcp unruffled_lalande 08b58d2f41d6 ashince/tomcat8 "catalina.sh run" 7 minutes ago up 7 minutes 0.0.0.0:8080->8080/tcp relaxed_williamson aeebcb0b40a2 nginx "/docker-entrypoint.…" 2 hours ago up 2 hours 0.0.0.0:80->80/tcp priceless_ardinghelli
#将nginx容器当中的配置拷贝到本地修改，因为容器当中没有vi vim命令
[root@localhost ~]# docker cp 68d2bdf336ed:/etc/nginx/conf.d/default.conf .
[root@localhost ~]# ls
anaconda-ks.cfg default.conf index.html
[root@localhost ~]# grep -ve "#|^$" default.conf
server {
listen 80;
listen [::]:80;
server_name localhost;
location / {
root /usr/share/nginx/html;
index index.html index.htm;
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/html;
}
}
#两台tomcat的ip地址
[root@localhost ~]# for i in {72e174adc77d,080068dae40a};do docker inspect $i| grep -i ipaddr |tail -n 1;done
"ipaddress": "172.17.0.4",
"ipaddress": "172.17.0.3",
拷贝静态资源到nginx目录下做动静分离 ，同时修改配置文件
#将其中一台tomcat的root目录拷贝到本地，因为做动静分离nginx需要访问静态资源要在本地
[root@localhost ~]# docker cp 72e174adc77d:/usr/local/tomcat/webapps/root .
#拷贝到nginx发布目录下面
[root@localhost ~]# docker cp root 68d2bdf336ed:/usr/share/nginx/html/
[root@localhost web-inf]# docker exec 68d2bdf336ed ls -l /usr/share/nginx/html/root
total 184
-rwxrwxrwx 1 root root 7064 jun 21 2017 release-notes.txt
drwxrwxrwx 2 root root 21 jul 27 2017 web-inf
-rwxrwxrwx 1 root root 26447 jun 21 2017 asf-logo-wide.svg
-rwxrwxrwx 1 root root 713 jun 21 2017 bg-button.png
-rwxrwxrwx 1 root root 1918 jun 21 2017 bg-middle.png
-rwxrwxrwx 1 root root 1392 jun 21 2017 bg-nav-item.png
-rwxrwxrwx 1 root root 1401 jun 21 2017 bg-nav.png
-rwxrwxrwx 1 root root 3103 jun 21 2017 bg-upper.png
-rwxrwxrwx 1 root root 21630 jun 21 2017 favicon.ico
-rwxrwxrwx 1 root root 12279 jun 21 2017 index.jsp
-rwxrwxrwx 1 root root 2376 jun 21 2017 tomcat-power.gif
-rwxrwxrwx 1 root root 5581 jun 21 2017 tomcat.css
-rwxrwxrwx 1 root root 2066 jun 21 2017 tomcat.gif
-rwxrwxrwx 1 root root 5103 jun 21 2017 tomcat.png
-rwxrwxrwx 1 root root 67795 jun 21 2017 tomcat.svg
#修改后的nginx配置文件如下，修改完后拷贝会容器当中
[root@localhost ~]# docker cp default.conf 68d2bdf336ed:/etc/nginx/conf.d/default.conf
[root@localhost ~]# docker exec 68d2bdf336ed cat /etc/nginx/conf.d/default.conf
upstream tomcat_web{
server 172.17.0.3:8080 weight=100 max_fails=2 fail_timeout=15;
server 172.17.0.4:8080 weight=100 max_fails=2 fail_timeout=15;
}
server {
listen 80;
listen [::]:80;
server_name localhost;
error_page 500 502 503 504 /50x.html;
root /usr/share/nginx/html;
location /{
proxy_pass http://tomcat_web;
proxy_set_header host $host;
}
location ~ .*\.(gif|jpg|jpeg|png|bmp|swf|flv|mp4|ico)$ {
root /usr/share/nginx/html/root;
expires 30d;
access_log off;
}
location ~ .*\.(eot|ttf|otf|woff|svg)$ {
root /usr/share/nginx/html/root;
expires 30d;
access_log off;
}
location ~ .*\.(js|css)$ {
root /usr/share/nginx/html/root;
expires 30d;
access_log off;
}
location = /50x.html {
root /usr/share/nginx/html;
}
}
#加载新的配置项
[root@localhost ~]# docker exec -it 68d2bdf336ed /bin/bash
root@68d2bdf336ed:/# /usr/sbin/nginx -s reload
2020/06/29 07:12:05 [notice] 79#79: signal process started
再去访问nginx 80端口如图所示：
补充知识：docker 基础操作 容器自启动 删除镜像和删除容器
docker容器自动重启设置
重启reboot操作系统后，发现docker 服务未启动，容器也未启动，怎么才能重启后自动启动呢
1、docker服务自动重启设置
[root@localhost ~]# systemctl enable docker.service
2、docker容器自动启动设置
[root@localhost ~]# docker images repository tag image id created size nginx latest 5a3221f0137b 10 months ago 126mb [root@localhost ~]# docker run -itd -p 80:80 nginx 3e28c4b5c6256c0ba04666751e426987d848b7afeb9c59774d5e9831dc78e5ee [root@localhost ~]# docker run -itd -p 81:80 nginx f0597c725fd6b7f4229aa9ab5de4a3cb29d09097a81dc8f64d1a60d469001379 [root@localhost ~]# docker port f0597c725fd6 80/tcp -> 0.0.0.0:81 [root@localhost ~]# docker ps container id image command created status ports names f0597c725fd6 nginx "nginx -g 'daemon of?? 30 seconds ago up 29 seconds 0.0.0.0:81->80/tcp elastic_allen 3e28c4b5c625 nginx "nginx -g 'daemon of?? 35 seconds ago up 33 seconds 0.0.0.0:80->80/tcp tender_volhard
3、 docker容器自动启动设置
[root@localhost ~]# docker update --restart=always f0597c725fd6 3e28c4b5c625 f0597c725fd6 3e28c4b5c625 [root@localhost ~]# reboot -h now connection closed by foreign host. [root@localhost ~]# docker ps container id image command created status ports names f0597c725fd6 nginx "nginx -g 'daemon of?? 13 minutes ago up 2 minutes 0.0.0.0:81->80/tcp elastic_allen 3e28c4b5c625 nginx "nginx -g 'daemon of?? 13 minutes ago up 2 minutes 0.0.0.0:80->80/tcp tender_volhard
当一个host中镜像和容器较多，需要重置时可选择删除其中部分或全部的镜像和容器。那么你就需要下面的操作了。
1、删除容器
[root@localhost ~]# docker ps -a container id image command created status ports names 27c5c4d3cf86 nginx "nginx -g 'daemon of?? 2 minutes ago up 2 minutes 0.0.0.0:80->80/tcp gracious_nash 61cccfe238a8 nginx "nginx -g 'daemon of?? 2 minutes ago up 2 minutes 0.0.0.0:81->80/tcp distracted_grothendieck [root@localhost ~]# docker ps -aq 27c5c4d3cf86 61cccfe238a8
1）首先需要停止所有的容器
[root@localhost ~]# docker ps -aq f0597c725fd6 3e28c4b5c625 8855c7777f83 466d2efe3dd9 20ca589b1a10 e5457b41cae6 314d1d01c941 [root@localhost ~]# docker stop $(docker ps -aq) f0597c725fd6 3e28c4b5c625 8855c7777f83 466d2efe3dd9 20ca589b1a10 e5457b41cae6 314d1d01c941 [root@localhost ~]# docker ps container id image command created status ports names
2）删除所有的容器（只删除单个时把后面的变量改为image id即可）
[root@localhost ~]# docker rm -f $(docker ps -aq) f0597c725fd6 3e28c4b5c625 8855c7777f83 466d2efe3dd9 20ca589b1a10 e5457b41cae6 314d1d01c941 [root@localhost ~]# docker ps -aq [root@localhost ~]#
2、删除镜像
1）查看host中的镜像
docker images
2）删除指定id的镜像
docker rmi <image id>
3）删除全部的images
docker rmi $(docker images -q)
3、当要删除的iamges和其他的镜像有关联而无法删除时
可通过 -f 参数强制删除
docker rmi -f $(docker images -q)
以上这篇docker nginx容器和tomcat容器实现负载均衡与动静分离操作就是www.887551.com分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持www.887551.com。