CentOS 7 服务器配置
关于如何配置 ssh 和 sshd 的问题，请找 Blog 中的相关文章，这里不再敖述。
root 执行
语言问题
vi /etc/environment
LANG=en_US.utf-8
LC_ALL=en_US.utf-8
欢迎界面
利用 工具 可以生成一些欢迎字体，放在 /etc/motd 就行。
安装依赖
yum -y update
yum grouplist
yum groupinstall -y 'Development Tools'
# Enable EPEL Repository
sudo su -c 'rpm -Uvh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm'
# Update everything, once more.
yum -y update
yum install -y curl-devel nano sqlite-devel libyaml-devel
yum install -y openssl-devel readline-devel zlib-devel
yum install epel-release
yum install -y nodejs npm
sudo wget https://dl.yarnpkg.com/rpm/yarn.repo -O /etc/yum.repos.d/yarn.repo
yum install yarn
npm install bower -g
解决 Centos yum 更新出错
显示错误如下：
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=updates&infra=stock ...
出现这个错误，主要有两种情况：
- dns问题
- 镜像连接错误
DNS问题
测试方法就是 ping 外网，发现 ping 不通就是这个问题。解决方法：echo "nameserver 8.8.8.8">>/etc/resolv.conf
镜像连接错误
使用国内的镜像，比如163镜像。
cd /etc/yum.repos.d
mv CentOS-Base.repo CentOS-Base.repo.bak
vi CentOS-Base.repo
[base]
name=Red Hat Enterprise Linux 7.0 -Base
baseurl=http://mirrors.163.com/centos/7/os/$basearch/
gpgcheck=1
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7
[update]
name=Red Hat Enterprise Linux 7.0 -Updates
baseurl=http://mirrors.163.com/centos/7/updates/$basearch/
gpgcheck=1
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7
[extras]
name=Red Hat Enterprise Linux 7.0 -Extras
baseurl=http://mirrors.163.com/centos/7/extras/$basearch/
gpgcheck=1
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7
保存就行。
安装 Nginx
yum install epel-release
yum install nginx
systemctl start nginx
systemctl enable nginx
If you are running a firewall, run the following commands to allow HTTP and HTTPS traffic:
firewall-cmd --permanent --zone=public --add-service=http
firewall-cmd --permanent --zone=public --add-service=https
firewall-cmd --reload
添加 deployer 用户
adduser deployer
passwd deployer
gpasswd -a deployer wheel
给用户配置 ssh 登录密钥，以下命令在本地开发机器上执行：
ssh-copy-id deployer@SERVER_IP_ADDRESS
安装 MySQL
Staging 机器，可以把 数据库 放在 ECS 而不用单开一个 RDS
yum install mariadb-server mariadb
systemctl start mariadb.service
systemctl enable mariadb.service
yum install mysql-devel
安装 memcached
Staging 机器，可以把 Memcached 放在 ECS
yum install memcached
systemctl status memcached
systemctl enable memcached # Be sure that Memcached starts at boot:
yum install cyrus-sasl-devel.x86_64
安装 Redis
yum install epel-release
yum install redis
systemctl start redis
systemctl enable redis # Be sure that redis starts at boot:
Verify the Installation
redis-cli ping # PONG
deployer 执行
安装 Ruby
git clone git://github.com/sstephenson/rbenv.git ~/.rbenv
git clone https://github.com/sstephenson/ruby-build.git ~/.rbenv/plugins/ruby-build
git clone git://github.com/jamis/rbenv-gemset.git ~/.rbenv/plugins/rbenv-gemset
git clone git://github.com/sstephenson/rbenv-gem-rehash.git ~/.rbenv/plugins/rbenv-gem-rehash
git clone git://github.com/rkh/rbenv-update.git ~/.rbenv/plugins/rbenv-update
git clone git://github.com/AndorChen/rbenv-china-mirror.git ~/.rbenv/plugins/rbenv-china-mirror
vi ~/.bash_profile
export PATH="$HOME/.rbenv/bin:$PATH"
eval "$(rbenv init -)"
export PATH="$HOME/.rbenv/plugins/ruby-build/bin:$PATH"
rbenv install --list
rbenv install 2.3.0
rbenv global 2.3.0
退出再重新登录
配置 Gem
echo "gem: --no-ri --no-rdoc" > ~/.gemrc
gem install bundler
MySQL
gem install mysql2 -v '0.4.4'
Install nokogiri gem on CentOS with prerequesites
在使用 mina 部署的时候，如果 nokogiri 的 gem 无法安装，可以先用 deployer 账户登录之后，安装如下依赖
sudo yum install libxslt-devel libxml2-devel
其他
ssh-keygen
ssh-keyscan -H github.com >> ~/.ssh/known_hosts
cat ~/.ssh/id_rsa.pub # 复制到 github 的部署机器人身上
service sshd restart
memcached dependancy problem
yum install cyrus-sasl-devel.x86_64
Nginx 无法访问 assets 文件夹下面的文件
- 把 assets 在 mina 中配置成 shared 文件
chmod o+x /home/deployer参考此文
Set Unix Environment Variables
先使用 echo $SHELL 查看一下自己的 shell 版本，如果是 bash shell 可以直接编辑 ~/.bashrc 文件添加自己的环境变量：
export GMAIL_USERNAME="myname@gmail.com"
重新打开一个命令行端口之后，就可以通过 ENV["GMAIL_USERNAME"] 的方式访问该变量。
其它方式可以参考 Rails Environment Variables。
安装 Docker
yum install epel-release –y
yum clean all
yum list
yum install docker-io –y
systemctl start docker
systemctl start docker #运行Docker守护进程
systemctl stop docker #停止Docker守护进程
systemctl restart docker #重启Docker守护进程
docker images
