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一 容器間通信1.容器的網(wǎng)絡(luò)共享

目前創(chuàng)新互聯(lián)公司已為成百上千的企業(yè)提供了網(wǎng)站建設(shè)、域名、虛擬空間、綿陽(yáng)服務(wù)器托管、企業(yè)網(wǎng)站設(shè)計(jì)、日土網(wǎng)站維護(hù)等服務(wù)，公司將堅(jiān)持客戶導(dǎo)向、應(yīng)用為本的策略，正道將秉承"和諧、參與、激情"的文化，與客戶和合作伙伴齊心協(xié)力一起成長(zhǎng)，共同發(fā)展。

處于這個(gè)模式下的docker容器會(huì)共享一個(gè)網(wǎng)絡(luò)棧，這樣兩個(gè)容器之間可以使用localhost高效快速通信。

使用于web服務(wù)器與應(yīng)用服務(wù)器之間的通信。

##清空實(shí)驗(yàn)環(huán)境[root@server1 ~]# docker ps -aCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES ##默認(rèn)網(wǎng)絡(luò)創(chuàng)建容器[root@server1 ~]# docker run -it --name vm1 ubunturoot@b1a2a90f98a5:/# ip a1: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever368: eth0@if369: mtu 1500 qdisc noqueue state UP group default link/ether 02:42:ac:11:00:02 brd ff:ff:ff:ff:ff:ff inet 172.17.0.2/16 brd 172.17.255.255 scope global eth0 valid_lft forever preferred_lft foreverroot@b1a2a90f98a5:/# [root@server1 ~]# ##container創(chuàng)建與vm1 網(wǎng)絡(luò)共享的vm2[root@server1 ~]# docker run -it --name vm2 --network container:vm1 ubunturoot@b1a2a90f98a5:/# ip a1: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever368: eth0@if369: mtu 1500 qdisc noqueue state UP group default link/ether 02:42:ac:11:00:02 brd ff:ff:ff:ff:ff:ff inet 172.17.0.2/16 brd 172.17.255.255 scope global eth0 valid_lft forever preferred_lft foreverroot@b1a2a90f98a5:/# 2.--link方式##清空鏡像[root@server1 ~]# docker rm -f vm1vm1[root@server1 ~]# docker rm -f vm2vm2[root@server1 ~]# docker ps -aCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES ##默認(rèn)網(wǎng)絡(luò)創(chuàng)建vm1[root@server1 ~]# docker run -it --name vm1 ubunturoot@68e56c57a9a0:/# ip a1: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever370: eth0@if371: mtu 1500 qdisc noqueue state UP group default link/ether 02:42:ac:11:00:02 brd ff:ff:ff:ff:ff:ff inet 172.17.0.2/16 brd 172.17.255.255 scope global eth0 valid_lft forever preferred_lft foreverroot@68e56c57a9a0:/# [root@server1 ~]# ##--link方式創(chuàng)建vm1子網(wǎng)的容器vm2[root@server1 ~]# docker run -it --name vm2 --link vm1:web ubunturoot@61267851b484:/# ip a1: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever372: eth0@if373: mtu 1500 qdisc noqueue state UP group default link/ether 02:42:ac:11:00:03 brd ff:ff:ff:ff:ff:ff inet 172.17.0.3/16 brd 172.17.255.255 scope global eth0 ##ip與vm1同網(wǎng)段，遞增 valid_lft forever preferred_lft forever ##解析文件中含有vm1 的ip 與別名等信息root@61267851b484:/# cat /etc/hosts127.0.0.1 localhost::1 localhost ip6-localhost ip6-loopbackfe00::0 ip6-localnetff00::0 ip6-mcastprefixff02::1 ip6-allnodesff02::2 ip6-allrouters172.17.0.2 web 68e56c57a9a0 vm1172.17.0.3 61267851b484root@61267851b484:/# ^Croot@61267851b484:/# --link

更新hosts文件

link容器的變量也復(fù)制過(guò)來(lái)

root@61267851b484:/# envHOSTNAME=61267851b484TERM=xtermLS_COLORS=rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arj=01;31:*.taz=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.lz=01;31:*.xz=01;31:*.bz2=01;31:*.bz=01;31:*.tbz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.war=01;31:*.ear=01;31:*.sar=01;31:*.rar=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.webm=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.axv=01;35:*.anx=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=00;36:*.au=00;36:*.flac=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:*.axa=00;36:*.oga=00;36:*.spx=00;36:*.xspf=00;36:PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/binPWD=/SHLVL=1HOME=/rootWEB_NAME=/vm2/webLESSOPEN=| /usr/bin/lesspipe %sLESSCLOSE=/usr/bin/lesspipe %s %s_=/usr/bin/envroot@61267851b484:/#

容器停止 ip將釋放掉，開啟后重新獲取其他ip，link的容器自動(dòng)更新hosts文件

二 容器與外網(wǎng)間的通信

查看當(dāng)前iptable的nat表火墻策略

[root@server1 ~]# iptables -t nat -nLChain PREROUTING (policy ACCEPT)target prot opt source destination DOCKER all -- 0.0.0.0/0 0.0.0.0/0 ADDRTYPE match dst-type LOCAL Chain INPUT (policy ACCEPT)target prot opt source destination Chain OUTPUT (policy ACCEPT)target prot opt source destination DOCKER all -- 0.0.0.0/0 !127.0.0.0/8 ADDRTYPE match dst-type LOCAL Chain POSTROUTING (policy ACCEPT)target prot opt source destination MASQUERADE all -- 172.26.0.0/24 0.0.0.0/0 MASQUERADE all -- 172.20.0.0/16 0.0.0.0/0 MASQUERADE all -- 172.18.0.0/16 0.0.0.0/0 MASQUERADE all -- 172.17.0.0/16 0.0.0.0/0 Chain DOCKER (2 references)target prot opt source destination RETURN all -- 0.0.0.0/0 0.0.0.0/0 RETURN all -- 0.0.0.0/0 0.0.0.0/0 RETURN all -- 0.0.0.0/0 0.0.0.0/0 RETURN all -- 0.0.0.0/0 0.0.0.0/0 ##創(chuàng)建nginx容器，并映射端口[root@server1 ~]# docker run -d --name nginx -p 80:80 nginxcfefe6420cfe60c46cb7a050c142af7eff86fa6d687c3577077a5b4e2c8b961c ##開啟80端口[root@server1 ~]# docker port nginx 80/tcp -> 0.0.0.0:80 [root@server1 ~]# netstat -antlp | grep 80tcp6 0 0 :::80 :::* LISTEN 27094/docker-proxy [root@server1 ~]# iptables -t nat -nLChain PREROUTING (policy ACCEPT)target prot opt source destination DOCKER all -- 0.0.0.0/0 0.0.0.0/0 ADDRTYPE match dst-type LOCAL Chain INPUT (policy ACCEPT)target prot opt source destination Chain OUTPUT (policy ACCEPT)target prot opt source destination DOCKER all -- 0.0.0.0/0 !127.0.0.0/8 ADDRTYPE match dst-type LOCAL Chain POSTROUTING (policy ACCEPT)target prot opt source destination MASQUERADE all -- 172.26.0.0/24 0.0.0.0/0 MASQUERADE all -- 172.20.0.0/16 0.0.0.0/0 MASQUERADE all -- 172.18.0.0/16 0.0.0.0/0 MASQUERADE all -- 172.17.0.0/16 0.0.0.0/0 MASQUERADE tcp -- 172.17.0.2 172.17.0.2 tcp dpt:80 Chain DOCKER (2 references)target prot opt source destination RETURN all -- 0.0.0.0/0 0.0.0.0/0 RETURN all -- 0.0.0.0/0 0.0.0.0/0 RETURN all -- 0.0.0.0/0 0.0.0.0/0 RETURN all -- 0.0.0.0/0 0.0.0.0/0 DNAT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:80 to:172.17.0.2:80[root@server1 ~]#

以上為個(gè)人經(jīng)驗(yàn)，希望能給大家一個(gè)參考，也希望大家多多支持腳本之家。如有錯(cuò)誤或未考慮完全的地方，望不吝賜教。

網(wǎng)頁(yè)名稱：Docker容器間通信與外網(wǎng)通信的操作
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