Ubuntu 16.04 And CentOS 7 Install Docker
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Ubuntu Install Docker
1.系統要求
64bit操作系統,內核版本至少爲3.10。
爲了讓Docker使用AUFS存儲,推薦安裝linux-image-extra。CentOS使用的是DeviceMapper. $ sudo apt-get install -y linux-image-extra-$(uname -r)
執行以上安裝命令,報錯如下:
Reading package lists... DoneBuilding dependency tree Reading state information... Donelinux-image-extra-4.10.0-32-generic is already the newest version (4.10.0-32.36~16.04.1).The following packages were automatically installed and are no longer required: linux-headers-4.8.0-36 linux-headers-4.8.0-36-generic linux-image-4.8.0-36-generic linux-image-extra-4.8.0-36-genericUse 'sudo apt autoremove' to remove them.0 upgraded, 0 newly installed, 0 to remove and 178 not upgraded.3 not fully installed or removed.After this operation, 0 B of additional disk space will be used.Setting up linux-image-extra-4.10.0-32-generic (4.10.0-32.36~16.04.1) ...run-parts: executing /etc/kernel/postinst.d/apt-auto-removal 4.10.0-32-generic /boot/vmlinuz-4.10.0-32-genericrun-parts: executing /etc/kernel/postinst.d/initramfs-tools 4.10.0-32-generic /boot/vmlinuz-4.10.0-32-genericupdate-initramfs: Generating /boot/initrd.img-4.10.0-32-genericW: Possible missing firmware /lib/firmware/i915/kbl_dmc_ver1_01.bin for module i915gzip: stdout: No space left on deviceE: mkinitramfs failure find 141 cpio 141 gzip 1update-initramfs: failed for /boot/initrd.img-4.10.0-32-generic with 1.run-parts: /etc/kernel/postinst.d/initramfs-tools exited with return code 1dpkg: error processing package linux-image-extra-4.10.0-32-generic (--configure): subprocess installed post-installation script returned error exit status 1dpkg: dependency problems prevent configuration of linux-image-generic-hwe-16.04: linux-image-generic-hwe-16.04 depends on linux-image-extra-4.10.0-32-generic; however: Package linux-image-extra-4.10.0-32-generic is not configured yet.dpkg: error processing package linux-image-generic-hwe-16.04 (--configure): dependency problems - leaving unconfigureddpkg: dependency problems prevent configuration of linux-generic-hwe-16.04: linux-generic-hwe-16.04 depends on linux-image-generic-hwe-16.04 (= 4.10.0.32.34); however: Package linux-image-generic-hwe-16.04 is not configured yet.dpkg: error processing package linux-generic-hwe-16.04 (--configure): dependency problems - leaving unconfiguredNo apport report written because the error message indicates its a followup error from a previous failure. No apport report written because the error message indicates its a followup error from a previous failure. Errors were encountered while processing: linux-image-extra-4.10.0-32-generic linux-image-generic-hwe-16.04 linux-generic-hwe-16.04E: Sub-process /usr/bin/dpkg returned an error code (1)
解決方法: $ sudo ap-get autoremove
然後重新執行安裝命令:
$ sudo apt-get install -y linux-image-extra-$(uname -r)Reading package lists... DoneBuilding dependency tree Reading state information... Donelinux-image-extra-4.10.0-32-generic is already the newest version (4.10.0-32.36~16.04.1).0 upgraded, 0 newly installed, 0 to remove and 178 not upgraded.
2.添加鏡像源
首先安裝apt-transport-https包以支持HTTPS協議:
$ sudo apt-get install -y apt-transport-httpsReading package lists... DoneBuilding dependency tree Reading state information... Doneapt-transport-https is already the newest version (1.2.24).0 upgraded, 0 newly installed, 0 to remove and 178 not upgraded.
添加源的gpg密鑰
$ sudo apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609DExecuting: /tmp/tmp.Ly3pzwSQtG/gpg.1.sh --keyserverhkp://p80.pool.sks-keyservers.net:80--recv-keys58118E89F3A912897C070ADBF76221572C52609Dgpg: requesting key 2C52609D from hkp server p80.pool.sks-keyservers.netgpg: key 2C52609D: public key "Docker Release Tool (releasedocker) <docker@docker.com>" importedgpg: Total number processed: 1gpg: imported: 1 (RSA: 1)
獲取當前操作系統的代號:
$ lsb_release -cCodename: xenial
一般情況下,12.04(LTS)代號爲precise,14.04(LTS)爲trusty,15.04爲ivid,15.10爲wily。
此處爲xenial。
接下來添加Docker的官方apt軟件源,創建文件,並寫入源的地址內容: $ sudo touch /etc/apt/sources.list.d/docker.list
$ cat /etc/apt/sources.list.d/docker.listdeb https://apt.dockerproject.org/repo ubuntu-xenial main
更新apt軟件包緩存: $ sudo apt-get update
3.安裝Docker
$ sudo apt-get install -y docker-engine
安裝完成之後查看docker服務狀態:
$ sudo systemctl status docker.service● docker.service - Docker Application Container Engine Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled Active: active (running) since Fri 2017-08-18 15:11:32 CST; 1min 10s ago Docs: https://docs.docker.com Main PID: 17393 (dockerd) CGroup: /system.slice/docker.service ├─17393 /usr/bin/dockerd -H fd:// └─17422 docker-containerd -l unix:///var/run/docker/libcontainerd/docker-coAug 18 15:11:32 Guiwang dockerd[17393]: time="2017-08-18T15:11:32.514522054+08:00" levAug 18 15:11:32 Guiwang dockerd[17393]: time="2017-08-18T15:11:32.514593142+08:00" levAug 18 15:11:32 Guiwang dockerd[17393]: time="2017-08-18T15:11:32.514612318+08:00" levAug 18 15:11:32 Guiwang dockerd[17393]: time="2017-08-18T15:11:32.515014487+08:00" levAug 18 15:11:32 Guiwang dockerd[17393]: time="2017-08-18T15:11:32.667623200+08:00" levAug 18 15:11:32 Guiwang dockerd[17393]: time="2017-08-18T15:11:32.721589597+08:00" levAug 18 15:11:32 Guiwang dockerd[17393]: time="2017-08-18T15:11:32.888903127+08:00" levAug 18 15:11:32 Guiwang dockerd[17393]: time="2017-08-18T15:11:32.888968656+08:00" levAug 18 15:11:32 Guiwang dockerd[17393]: time="2017-08-18T15:11:32.909135681+08:00" levAug 18 15:11:32 Guiwang systemd[1]: Started Docker Application Container Engine.
看到‘Active: active (running)’,說明docker已經啓動。至此,安裝結束。
CentOS 7 Install Docker
首先添加yum軟件源:
sudo tee /etc/yum.repos.d/docker.repo << 'EOF'[dockerrepo]name=Docker Repositorybaseurl=https://yum.dockerproject.org/repo/main/centos/7/enabled=1gpgcheck=1gpgkey=https://yum.dockerproject.org/gpg
$ sudo yum update
$ sudo yum install -y docker-engine
對於CentOS 7系統,CentOS-Extras源中已內置Docker,如果已經配置了CentOS-Extras源,可以直接通過上面的yum命令進行安裝。
配置Docker服務
爲了避免使用docker命令都要用特權身份,可以將當前用戶加入安裝中自動創建的docker用戶組,重新登陸後生效: $ sudo usermod -aG docker USER_NAME
從docker組中移除用戶: $ sudo gpasswd -d USER_NAME docker
當然,也可以用創建別名的方式來使用docker,在.bashrc文件中追加:
# dkr爲別名名稱,可自行定義alias dkr='sudo docker'
Ubuntu下,Docker的默認配置文件爲/etc/default/docker, 服務管理腳本爲/etc/init.d/docker
對於CentOS/RedHat,可通過systemctl命令來管理Docker服務。
Linux下Docker代理配置
創建目錄/etc/systemd/system/docker.service.d ,並創建http-proxy.conf文件,輸入以下內容:
[Service]Environment="HTTP_PROXY=http://proxyServer:PORT"Environment="HTTPS_PROXY=http://proxyServer:PORT"
刷新配置: sudo systemctl daemon-reload
重啓docker服務: sudo systemctl restart docker
检查变量是否加载: systemctl show docker --property Environment
或 systemctl show docker | grep Envir*
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