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目錄
下載 containerd.io https://download.docker.com/linux/centos/7/x86_64/stable/Packages/
[root@localhost ~]# dnf install https://download.docker.com/linux/centos/7/x86_64/stable/Packages/containerd.io-1.2.13-3.2.el7.x86_64.rpm
安裝 Docker
[root@localhost ~]# dnf config-manager --add-repo=https://download.docker.com/linux/centos/docker-ce.repo Adding repo from: https://download.docker.com/linux/centos/docker-ce.repo [root@localhost ~]# dnf install -y docker-ce [root@localhost ~]# systemctl enable docker [root@localhost ~]# systemctl start docker
[root@localhost ~]# docker -v Docker version 19.03.12, build 48a66213fe
yum install docker-io service docker start chkconfig docker on docker pull centos:latest docker images centos
test
docker run -i -t centos /bin/bash
從官方網站獲得最新社區版
yum install -y yum-utils yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo yum makecache fast yum -y install docker-ce systemctl start docker
測試安裝是否成功
docker run hello-world
Ubuntu 預設版本
$ sudo apt update $ sudo apt install docker.io $ sudo ln -sf /usr/bin/docker.io /usr/local/bin/docker $ sudo sed -i '$acomplete -F _docker docker' /etc/bash_completion.d/docker.io
$ sudo docker run -i -t ubuntu /bin/bash
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#!/bin/bash
sudo apt remove docker docker-engine
sudo apt install \
apt-transport-https \
ca-certificates \
curl \
software-properties-common
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
sudo apt-key fingerprint 0EBFCD88
sudo add-apt-repository \
"deb [arch=amd64] https://download.docker.com/linux/ubuntu \
$(lsb_release -cs) \
stable"
sudo apt update
sudo apt install docker-ce
apt-cache madison docker-ce
啟動參數配置 /etc/default/docker
neo@ubuntu:~$ cat /etc/default/docker # Docker Upstart and SysVinit configuration file # # THIS FILE DOES NOT APPLY TO SYSTEMD # # Please see the documentation for "systemd drop-ins": # https://docs.docker.com/engine/admin/systemd/ # # Customize location of Docker binary (especially for development testing). #DOCKERD="/usr/local/bin/dockerd" # Use DOCKER_OPTS to modify the daemon startup options. #DOCKER_OPTS="--dns 8.8.8.8 --dns 8.8.4.4" # If you need Docker to use an HTTP proxy, it can also be specified here. #export http_proxy="http://127.0.0.1:3128/" # This is also a handy place to tweak where Docker's temporary files go. #export DOCKER_TMPDIR="/mnt/bigdrive/docker-tmp"
啟動腳本 /etc/init/docker.conf
neo@ubuntu:~$ sudo cat /etc/init/docker.conf
[sudo] password for neo:
description "Docker daemon"
start on (filesystem and net-device-up IFACE!=lo)
stop on runlevel [!2345]
limit nofile 524288 1048576
# Having non-zero limits causes performance problems due to accounting overhead
# in the kernel. We recommend using cgroups to do container-local accounting.
limit nproc unlimited unlimited
respawn
kill timeout 20
pre-start script
# see also https://github.com/tianon/cgroupfs-mount/blob/master/cgroupfs-mount
if grep -v '^#' /etc/fstab | grep -q cgroup \
|| [ ! -e /proc/cgroups ] \
|| [ ! -d /sys/fs/cgroup ]; then
exit 0
fi
if ! mountpoint -q /sys/fs/cgroup; then
mount -t tmpfs -o uid=0,gid=0,mode=0755 cgroup /sys/fs/cgroup
fi
(
cd /sys/fs/cgroup
for sys in $(awk '!/^#/ { if ($4 == 1) print $1 }' /proc/cgroups); do
mkdir -p $sys
if ! mountpoint -q $sys; then
if ! mount -n -t cgroup -o $sys cgroup $sys; then
rmdir $sys || true
fi
fi
done
)
end script
script
# modify these in /etc/default/$UPSTART_JOB (/etc/default/docker)
DOCKERD=/usr/bin/dockerd
DOCKER_OPTS=
if [ -f /etc/default/$UPSTART_JOB ]; then
. /etc/default/$UPSTART_JOB
fi
exec "$DOCKERD" $DOCKER_OPTS --raw-logs
end script
# Don't emit "started" event until docker.sock is ready.
# See https://github.com/docker/docker/issues/6647
post-start script
DOCKER_OPTS=
DOCKER_SOCKET=
if [ -f /etc/default/$UPSTART_JOB ]; then
. /etc/default/$UPSTART_JOB
fi
if ! printf "%s" "$DOCKER_OPTS" | grep -qE -e '-H|--host'; then
DOCKER_SOCKET=/var/run/docker.sock
else
DOCKER_SOCKET=$(printf "%s" "$DOCKER_OPTS" | grep -oP -e '(-H|--host)\W*unix://\K(\S+)' | sed 1q)
fi
if [ -n "$DOCKER_SOCKET" ]; then
while ! [ -e "$DOCKER_SOCKET" ]; do
initctl status $UPSTART_JOB | grep -qE "(stop|respawn)/" && exit 1
echo "Waiting for $DOCKER_SOCKET"
sleep 0.1
done
echo "$DOCKER_SOCKET is up"
fi
end script
neo@MacBook-Pro ~ % docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
1b930d010525: Pull complete
Digest: sha256:2557e3c07ed1e38f26e389462d03ed943586f744621577a99efb77324b0fe535
Status: Downloaded newer image for hello-world:latest
Hello from Docker!
This message shows that your installation appears to be working correctly.
To generate this message, Docker took the following steps:
1. The Docker client contacted the Docker daemon.
2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
(amd64)
3. The Docker daemon created a new container from that image which runs the
executable that produces the output you are currently reading.
4. The Docker daemon streamed that output to the Docker client, which sent it
to your terminal.
To try something more ambitious, you can run an Ubuntu container with:
$ docker run -it ubuntu bash
Share images, automate workflows, and more with a free Docker ID:
https://hub.docker.com/
For more examples and ideas, visit:
https://docs.docker.com/get-started/
neo@MacBook-Pro ~ % docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
hello-world latest fce289e99eb9 2 months ago 1.84kB
neo@MacBook-Pro ~ % docker container ls --all
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
ea694b443e9e hello-world "/hello" About a minute ago Exited (0) About a minute ago dreamy_feistel