這期內(nèi)容當(dāng)中小編將會(huì)給大家?guī)?lái)有關(guān)Docker如何實(shí)現(xiàn)在線與離線安裝，文章內(nèi)容豐富且以專業(yè)的角度為大家分析和敘述，閱讀完這篇文章希望大家可以有所收獲。

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在線安裝

這里采用yum源命令安裝前期準(zhǔn)備的依賴包，包括yum-utils、device-mapper-persistent-data、lvm2

sudo yum install -y yum-utils device-mapper-persistent-data lvm2

因?yàn)楣俜界R像倉(cāng)庫(kù)網(wǎng)速較慢，在此設(shè)置阿里云鏡像代理，以便快速下載、上傳鏡像。

sudo yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

接下來(lái)安裝Docker-CE 社區(qū)版，通過(guò)以下命令查看docker社區(qū)版安裝包列表。如下圖所示各docker版本信息。

yum list docker-ce --showduplicates | sort -r

選擇對(duì)應(yīng)版本安裝docker

sudo yum install docker-ce.x86_64

啟動(dòng)

sudo systemctl enable docker

sudo systemctl start docker

驗(yàn)證：查看版本信息命令，出現(xiàn)下圖時(shí)表明安裝成功。

docker version

離線安裝

提供以下三種方式下載docker離線安裝包

Docker官方地址：docker down

1.百度云下載地址：  https://pan.baidu.com/s/1tZpsOvY0wmCfwHXlNJuq8Q 提取碼: rhaq

2.有網(wǎng)服務(wù)器執(zhí)行命令下載：wget https://download.docker.com/linux/static/stable/x86_64/docker-18.09.6.tgz

3.官方參考文檔：https://docs.docker.com/install/linux/docker-ce/binaries/#install-static-binaries

將已下載好的docker離線包拷貝到服務(wù)器，解壓壓縮包

tar -xvf docker-18.09.6.tgz

將解壓出來(lái)的docker文件內(nèi)容移動(dòng)到 /usr/bin/ 目錄下

cp docker/* /usr/bin/

注冊(cè)編輯docker服務(wù)

vim /etc/systemd/system/docker.service

寫入以下內(nèi)容后保存

[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

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