离线安装docker并离线安装应用 (by quqi99)

Posted 2021-10-23 quqi99

版权声明：可以任意转载，转载时请务必以超链接形式标明文章原始出处和作者信息及本版权声明 (作者：张华 发表于：2021-06-24)

echo 'step 1 - install offline docker'

wget https://download.docker.com/linux/static/stable/x86_64/docker-20.10.7.tgz
cat << EOF |tee docker.service
[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network-online.target firewalld.service
Wants=network-online.target
[Service]
Type=notify
# the default is not to use systemd for cgroups because the delegate issues still
# exists and systemd currently does not support the cgroup feature set required
# for containers run by docker
ExecStart=/usr/bin/dockerd
ExecReload=/bin/kill -s HUP $MAINPID
# Having non-zero Limit*s causes performance problems due to accounting overhead
# in the kernel. We recommend using cgroups to do container-local accounting.
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
# Uncomment TasksMax if your systemd version supports it.
# Only systemd 226 and above support this version.
#TasksMax=infinity
TimeoutStartSec=0
# set delegate yes so that systemd does not reset the cgroups of docker containers
Delegate=yes
# kill only the docker process, not all processes in the cgroup
KillMode=process
# restart the docker process if it exits prematurely
Restart=on-failure
StartLimitBurst=3
StartLimitInterval=60s
[Install]
WantedBy=multi-user.target
EOF
cat << EOF |tee install.sh
#!/bin/sh
tar -xvf \\$1
cp docker/* /usr/bin/
cp docker.service /etc/systemd/system/
chmod +x /etc/systemd/system/docker.service
systemctl daemon-reload
systemctl start docker
systemctl enable docker.service
docker -v
sudo systemctl status docker
EOF
cat << EOF |tee uninstall.sh
#!/bin/sh
rm -f /etc/systemd/system/docker.service
rm -rf /usr/bin/docker*
systemctl daemon-reload
EOF
sudo sh ./install.sh ./docker-20.10.7.tgz

echo 'step 2 - make a test image'

cat << EOF | sudo tee simple-go-http-server.go
package main
import (
    "io"
    "log"
    "net/http"
    "os"
    "time")

type myHandler struct{}

func (*myHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
    io.WriteString(w, "ok")
}

func main() {
    var port string
    port = ":" + os.Args[1]
    srv := &http.Server{
        Addr:         port,
        Handler:      &myHandler{},
        ReadTimeout:  30 * time.Second,
        WriteTimeout: 30 * time.Second,
    }
    log.Fatal(srv.ListenAndServe())
}
EOF
cat << EOF |tee Dockerfile
FROM golang:latest
RUN mkdir /app 
ADD simple-go-http-server.go /app/ 
WORKDIR /app 
CMD [ "go", "run", "/app/simple-go-http-server.go", "8080" ]
EOF
sudo docker build -t simple-go-http-server .


echo 'step 3 - save image to local file'

IMG_ID=$(docker image ls |awk '/simple-go-http-server/ {print $3}')
# docker save -o images.tar postgres:9.6 mongo:3.4
docker save $IMG_ID > myapp.tar

echo ' step 4 - load image'

docker load < myapp.tar
IMG_ID2=$(docker image ls |awk '/none/ {print $3}')
docker image tag $IMG_ID2 zhhuabj/myapp:latest

echo 'step 5 - test image'

sudo docker run -d --rm --name myapp zhhuabj/myapp:latest
APP_IP=$(docker inspect myapp |grep '"IPAddress"' |head -n1 |awk -F '"' '{print $4}')
curl ${APP_IP}:8080