Dockerfile如何使用alpine系統(tǒng)制作haproxy鏡像
更新時間:2023年05月30日 08:42:51 作者:slyybw
這篇文章主要介紹了Dockerfile如何使用alpine系統(tǒng)制作haproxy鏡像問題,具有很好的參考價值,希望對大家有所幫助。如有錯誤或未考慮完全的地方,望不吝賜教
Dockerfile目錄結構
[root@localhost ~]# tree haproxy_alpinelinux/
haproxy_alpine/
├── Dockerfile
└── files
├── haproxy-2.4.0.tar.gz
├── haproxycfg.sh
├── install.sh
└── sysctl.conf
1 directory, 5 files拉取alpine鏡像
[root@localhost ~]# [root@localhost ~]# docker pull alpine Using default tag: latest latest: Pulling from library/alpine Digest: sha256:21a3deaa0d32a8057914f36584b5288d2e5ecc984380bc0118285c70fa8c9300 Status: Image is up to date for alpine:latest docker.io/library/alpine:latest [root@localhost ~]# docker images REPOSITORY TAG IMAGE ID CREATED SIZE alpine latest c059bfaa849c 2 weeks ago 5.59MB
Dockerfile文件內(nèi)容
[root@localhost ~]# cat haproxy_alpine/Dockerfile
FROM alpine
LABEL MAINTAINER "syblyw0806 1234567890@qqq.com"
ENV version 2.4.0
ADD files/haproxy-${version}.tar.gz /opt/
ADD files/install.sh /opt/
ADD files/haproxycfg.sh /opt/
ADD files/sysctl.conf /opt/
RUN /opt/install.sh
ENTRYPOINT /opt/haproxycfg.sh安裝haproxy的腳本
[root@localhost ~]# cat haproxy_alpine/files/install.sh
#!/bin/sh
sed -i 's/dl-cdn.alpinelinux.org/mirrors.aliyun.com/' /etc/apk/repositories
apk update
adduser -S -H -s /sbin/nologin haproxy
addgroup haproxy
apk add --no-cache -U make gcc pcre-dev bzip2-dev openssl-dev elogind-dev libc-dev dahdi-tools dahdi-tools-dev libexecinfo libexecinfo-dev ncurses-dev zlib-dev zlib
cd /opt/haproxy-${version}
make TARGET=linux-musl USE_OPENSSL=1 USE_ZLIB=1 USE_PCRE=1
make install PREFIX=/usr/local/haproxy
cp haproxy /usr/sbin/
mkdir /etc/haproxy
apk del gcc make
rm -rf /opt/haproxy-${version}/ /opt/install.shhaproxy配置文件
[root@localhost ~]# cat haproxy_alpine/files/haproxycfg.sh
#!/bin/sh
cat > /etc/haproxy/haproxy.cfg <<EOF
#--------------????----------------
global
log 127.0.0.1 local0 info
#log loghost local0 info
maxconn 20480
#chroot /usr/local/haproxy
pidfile /var/run/haproxy.pid
#maxconn 4000
user haproxy
group haproxy
daemon
#---------------------------------------------------------------------
#common defaults that all the 'listen' and 'backend' sections will
#use if not designated in their block
#---------------------------------------------------------------------
defaults
mode http
log global
option dontlognull
option httpclose
option httplog
#option forwardfor
option redispatch
balance roundrobin
timeout connect 10s
timeout client 10s
timeout server 10s
timeout check 10s
maxconn 60000
retries 3
#--------------??????------------------
listen admin_stats
bind 0.0.0.0:8189
stats enable
mode http
log global
stats uri /haproxy_stats
stats realm Haproxy\ Statistics
stats auth admin:admin
#stats hide-version
stats admin if TRUE
stats refresh 30s
#---------------web??-----------------------
listen webcluster
bind 0.0.0.0:80
mode http
#option httpchk GET /index.html
log global
maxconn 3000
balance roundrobin
cookie SESSION_COOKIE insert indirect nocache
EOF
count=1
for rs_ip in $RSs;do
cat >> /etc/haproxy/haproxy.cfg <<EOF
server web$count $rs_ip:80 check inter 2000 fall 5
EOF
let count++
done
haproxy -f /etc/haproxy/haproxy.cfg -dbsysctl.conf
[root@localhost ~]# cat haproxy_alpine/files/sysctl.conf # sysctl settings are defined through files in # /usr/lib/sysctl.d/, /run/sysctl.d/, and /etc/sysctl.d/. # # Vendors settings live in /usr/lib/sysctl.d/. # To override a whole file, create a new file with the same in # /etc/sysctl.d/ and put new settings there. To override # only specific settings, add a file with a lexically later # name in /etc/sysctl.d/ and put new settings there. # # For more information, see sysctl.conf(5) and sysctl.d(5). net.ipv4.ip_nonlocal_bind = 1 net.ipv4.ip_forward = 1
構建鏡像
[root@localhost ~]# docker build -t haproxy:v3.0 haproxy_alpinelinux/
Sending build context to Docker daemon 3.602MB
Step 1/9 : FROM alpine
---> c059bfaa849c
Step 2/9 : LABEL MAINTAINER "syblyw0806 1234567890@qqq.com"
---> Using cache
---> bbfbe82a7f48
Step 3/9 : ENV version 2.4.0
---> Using cache
---> dccb41beb82b
Step 4/9 : ADD files/haproxy-${version}.tar.gz /opt/
---> Using cache
---> 856cb1d8e0de
Step 5/9 : ADD files/install.sh /opt/
---> 589a939efe69
Step 6/9 : ADD files/haproxycfg.sh /opt/
---> 37bd73459586
Step 7/9 : ADD files/sysctl.conf /opt/
---> be1b5cd53414
Step 8/9 : RUN /opt/install.sh
---> Running in 6fd54c54e040
Removing intermediate container 6fd54c54e040
---> e1bf872ca416
Step 9/9 : ENTRYPOINT /opt/haproxycfg.sh
---> Running in 89515ad8dc41
Removing intermediate container 89515ad8dc41
---> 4f4d41c2eebb
Successfully built 4f4d41c2eebb
Successfully tagged haproxy:v3.0
[root@localhost ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
haproxy v3.0 4f4d41c2eebb About an hour ago 83.8MB啟動容器
[root@localhost ~]# docker run -d --name haproxy_alpinelinux -p 1234:80 -e RSs="172.17.0.2 172.17.0.3" haproxy:v3.0 // 啟動一個httpd容器和一個nginx容器 be589a4d9689427ec0810c2f2b28aa59dd4bba425590f0277b4e4f82d3b973e8 [root@localhost ~]# docker run -d --name httpd syblyw0806/httpd:v2.0 0706632d35fbf02807c5668cae27fc8d3fe3406f198dff5988370c688c630b5b [root@localhost ~]# docker run -d --name nginx nginx 80ccbde27a8e0d5545b8422f809c9b09f178bff7a20d5bc194925bd707a34af7 [root@localhost ~]# docker exec -it haproxy_alpinelinux /bin/sh / # ss -anlt // 這里如果沒有ss命令,需要安裝iproute2這個包 State Recv-Q Send-Q Local Address:Port Peer Address:Port Process LISTEN 0 128 0.0.0.0:8189 0.0.0.0:* LISTEN 0 128 0.0.0.0:80 0.0.0.0:* [root@localhost ~]# docker ps -a CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES be589a4d9689 haproxy:v3.0 "/bin/sh -c /opt/hap…" About a minute ago Up About a minute 0.0.0.0:1234->80/tcp, :::1234->80/tcp haproxy_alpinelinux 80ccbde27a8e nginx "/docker-entrypoint.…" 10 minutes ago Up 10 minutes 80/tcp nginx 0706632d35fb syblyw0806/httpd:v2.0 "/usr/local/apache/b…" 10 minutes ago Up 10 minutes 80/tcp httpd
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總結
以上為個人經(jīng)驗,希望能給大家一個參考,也希望大家多多支持腳本之家。
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