Ubuntu系统配置，以及Docker，Rancher的安装

1、Ubuntu的配置

1.1 配置主机时间、时区、系统语言

• 查看时区

date -R或者timedatectl

• 修改时区

ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

• 修改系统语言环境

sudo echo 'LANG="en_US.UTF-8"' >> /etc/profile;source /etc/profile

• 配置主机NTP时间同步

1.2 Kernel性能调优

cat >> /etc/sysctl.conf<

1.3 Ubuntu国内更新源

sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup      
vi /etc/apt/sources.list
#注释原文件内的源并添加如下地址
#Ubuntu 官方源 
deb http://archive.ubuntu.com/ubuntu/ gutsy main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ gutsy-security main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ gutsy-updates main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ gutsy-proposed main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ gutsy-backports main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ gutsy main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ gutsy-security main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ gutsy-updates main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ gutsy-proposed main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ gutsy-backports main restricted universe multiverse 
#添加下面的源
#阿里云
deb http://mirrors.aliyun.com/ubuntu/ trusty main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ trusty-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ trusty-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ trusty-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ trusty main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ trusty-backports main restricted universe multiverse
#更新源
sudo apt-get update
#更新软件
sudo apt-get dist-upgrade
sudo apt-get upgrade

1.4 Docker-ce安装

#step1
sudo apt-get remove docker docker-engine docker.io containerd runc
sudo apt-get update
#step2
sudo apt-get install \
    apt-transport-https \
    ca-certificates \
    curl \
    gnupg-agent \
    software-properties-common

#step3 
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

#step4
sudo apt-key fingerprint 0EBFCD88

#step5
sudo add-apt-repository \
   "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
   $(lsb_release -cs) \
   stable"

#step6
sudo apt-get update

#step7
sudo apt-get install docker-ce docker-ce-cli containerd.io

1.5 Docker配置

配置镜像加速地址

编辑/etc/docker/daemon.json加入以下内容

{
"registry-mirrors": ["https://registry.docker-cn.com"]
}

配置Docker存储驱动

OverlayFS是一个新一代的联合文件系统，类似于AUFS，但速度更快，实现更简单。Docker为OverlayFS提供了两个存储驱动程序:旧版的overlay，新版的overlay2(更稳定)。

先决条件:

• overlay2: Linux内核版本4.0或更高版本，或使用内核版本3.10.0-514+的RHEL或CentOS。
• overlay: 主机Linux内核版本3.18+
• 支持的磁盘文件系统
  • ext4(仅限RHEL 7.1)
  • xfs(RHEL7.2及更高版本)，需要启用d_type=true。 >具体详情参考 Docker Use the OverlayFS storage driver

编辑/etc/docker/daemon.json加入以下内容

{
"storage-driver": "overlay2",
"storage-opts": ["overlay2.override_kernel_check=true"]
}

配置日志驱动

容器在运行时会产生大量日志文件，很容易占满磁盘空间。通过配置日志驱动来限制文件大小与文件的数量。 >限制单个日志文件为100M,最多产生3个日志文件

{
"log-driver": "json-file",
"log-opts": {
    "max-size": "100m",
    "max-file": "3"
    }
}

1.6 Rancher 1.6 单容器部署

sudo docker run -d --restart=unless-stopped -p 8080:8080 rancher/server