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Ubuntu 安裝 R4.5 標準流程

前置作業

Ubuntu 18.04 LTS 已安裝完畢並能遠端連線進入
當前帳號可以使用 sudo 指令

建立 rulingcom 帳號（若已是 rulingcom 帳號，前往下一步驟）

$ sudo su # 從當前帳號切換到 root
$ adduser rulingcom
$ # set the password for rulingcom
$ # fill in user information, it's ok to leave all blank
$ usermod -aG sudo rulingcom # 讓 rulingcom 可用 sudo
$ su - rulingcom
$ sudo ls -la /root # 測試 rulingcom sudo 是否可用
$ exit; exit # 第一次 exit 退回 root 帳號，第二次 exit 退回剛登入的帳號

下載裝機script並執行(除了網站的部分需手動，其餘皆已改為自動，其他內容不用再執行)

$ wget http://gitlab.tp.rulingcom.com/erictyl/install_r45_on_ubuntu_1804lts_doc/-/raw/master/install_orbit_environment.sh
$ source install_orbit_environment.sh #請使用要執行網站的user(須為具有sudo權限之帳號)來執行，執行後會需要輸入user密碼
## 以下其他內容均不需執行，可直接進行架站或移機

安裝libgmp(Ubuntu 14.04需要)

sudo apt install libgmp-dev ##此套件為nokogiri相依套件

安裝 Nginx 1.14

$ sudo apt update
$ sudo apt install nginx
$ nginx -v # 確認版本為 1.14
$ sudo systemctl status nginx # 查看 nginx 是否啟動
$ sudo systemctl restart nginx # 安全重啟 nginx，若已啟動則可跳過此步驟
$ cd /etc/nginx/
$ sudo mkdir orbit_sites/
$ sudo vim nginx.conf # add `include /etc/nginx/orbit_sites/*;` to Virtual Host Configs block
$ sudo vim orbit_sites/xxx_ooo # 建立網站 nginx 設定檔，xxx 為學校縮寫，ooo 為系所、單位縮寫。內容參考附註 nginx 設定檔

# 此為附註 nginx 設定檔
# upstream xxx_sock {
upstream orbit_sock {
# server unix:/path/to/your/r45/tmp/unicorn.sock;
  server unix:/home/rulingcom/orbit_sites/orbit/tmp/unicorn.sock;
}

server {
  listen 80;

# root /path/to/your/r45/public;
  root /home/rulingcom/orbit_sites/orbit/public;

# server_name your.website.address;
  server_name localhost;

  client_max_body_size 500m;

  location / {
    try_files $uri $uri/index.html $uri.html @app;
  }

  location @app {
    proxy_redirect     off;
    proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header   Host              $http_host;
    proxy_connect_timeout   360;
#   proxy_pass http://xxx_sock;
    proxy_pass http://orbit_sock;
  }
}

安裝 MongoDB 3.2.22

$ # 匯入 MongoDB 公鑰到套件管理系統
$ wget http://archive.ubuntu.com/ubuntu/pool/main/o/openssl1.0/libssl1.0.0_1.0.2n-1ubuntu5.6_amd64.deb  #Ubuntu 20.04LTS
$ sudo dpkg -i libssl1.0.0_1.0.2n-1ubuntu5.6_amd64.deb  #Ubuntu 20.04LTS
$ wget -qO - https://www.mongodb.org/static/pgp/server-3.2.asc | sudo apt-key add -
$ # 建立 list file
$ echo "deb http://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.2 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.2.list
$ sudo apt-get update # 更新套件管理系統
$ # 下載並安裝 MongoDB 3.2.22
$ sudo apt-get install -y mongodb-org=3.2.22 mongodb-org-server=3.2.22 mongodb-org-shell=3.2.22 mongodb-org-mongos=3.2.22 mongodb-org-tools=3.2.22
$ mongo --version # 查看 MongoDB 版本
$ sudo systemctl status mongod # 查看 MongoDB 是否啟動
$ sudo systemctl restart mongod # 安全啟動 MongoDB，若已啟動則可跳過此步驟

安裝 ImageMagick 6.9.7-4 (部份預設模組需要處理圖片，此為相依軟體)

$ sudo apt-get install libjpeg62
$ wget http://download.sourceforge.net/libpng/libpng-1.5.13.tar.gz
$ tar xvfz libpng-1.5.13.tar.gz
$ cd libpng-1.5.13/
$ ./configure
$ make
$ sudo make install
# 編譯jpeg套件
$ sudo apt install -y libltdl-dev graphviz libpng-dev libfftw3-dev
$ sudo apt-get install -y libjpeg-turbo8-dev
$ sudo apt install -y libgif-dev libjpeg-dev libopenexr-dev libpng-dev libwebp-dev
$ sudo apt install -y cmake pkg-config libbrotli-dev
# Build imagemagick
$ wget http://www.imagemagick.org/download/ImageMagick.tar.gz
$ tar xvfz ImageMagick.tar.gz
$ cd ImageMagick-7.1.0-16/ # cd ImageMagick-x.x.x-x(版本號)
$ ./configure --with-bzlib=yes --with-fontconfig=yes --with-freetype=yes --with-gslib=yes --with-gvc=yes --with-jpeg=yes --with-jp2=yes --with-png=yes --with-tiff=yes --disable-shared --with-modules
##在configure跑完後，可確認Delegates是否有jpeg png zlib(最後一行)
$ make
$ sudo make install
$ sudo ln -s /usr/local/lib/* /usr/lib/.
$ sudo ln -s /usr/local/lib/pkgconfig/* /usr/lib/pkgconfig/.
$ sudo ln -s /usr/local/bin/* /usr/bin/.
$ convert -list configure #確認為版本7.1.0.0以上
####以下為舊的imagemagick安裝方式(請不要使用，會有圖片上傳後，解碼失敗問題)
#$ sudo apt install imagemagick
#$ convert -version # 檢查是否安裝成功，並確認版本
#$ identify -version #檢查Delegates是否有jpeg png zlib

Ubuntu 20.04 才需要的步驟

###安裝 libssl1.0-dev
$ sudo sh -c "echo 'deb http://security.ubuntu.com/ubuntu bionic-security main' >> /etc/apt/sources.list"
$ sudo apt update && apt-cache policy libssl1.0-dev
$ sudo apt-get install libssl1.0-dev

設定host IP(避免VM抓不到domain對應的IP)

# sudo vim /etc/hosts 加入以下內容
59.120.142.210 gitlab.tp.rulingcom.com
59.120.142.206 ruling.digital store.tp.rulingcom.com
151.101.1.227 index.rubygems.org rubygems.org
104.192.141.1 bitbucket.org

安裝 RVM (Ruby 版本和套件的管理程式)

$ sudo apt install gnupg2
$ gpg2 --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
$ \curl -sSL https://get.rvm.io | bash -s stable
$ source /home/rulingcom/.rvm/scripts/rvm
$ sudo vi /etc/apt/sources.list # Ubuntu 20.04LTS add `deb http://security.ubuntu.com/ubuntu bionic-security main`
$ rvm install 2.1.2
$ rvm install 2.1.10
$ rvm --default use 2.1.10

若以上安裝RVM失敗可用另一種方式安裝RVM和ruby

$ sudo apt-get install software-properties-common
$ sudo apt-add-repository -y ppa:rael-gc/rvm
$ sudo apt-get update
$ sudo apt-get install rvm
$ echo 'source "/etc/profile.d/rvm.sh"' >> ~/.bashrc
$ source "/etc/profile.d/rvm.sh"
$ rvm install 2.1.2
$ rvm install 2.1.10
$ rvm --default use 2.1.10

安裝screen

$ sudo apt-get install screen

安裝 R4.5

一、建立 ssh key pair

$ cd /home/rulingcom/.ssh # 如果沒有該資料夾則自行建立 `mkdir /home/rulingcom/.ssh`，接著進入 .ssh 資料夾
$ ssh-keygen # 設定 key pair name -> 設定密碼(不設定直接 enter) -> 確認密碼(不設定直接 enter)
$ cat ~/.ssh/your_key.pub # 將公鑰轉交給禾綸（注意：不是私鑰）
$ # 確認禾綸將公鑰加入 GitLab 後再接續下列指令與步驟二
$ eval "$(ssh-agent -s)"
$ ssh-add ~/.ssh/your_private_key

二、安裝 R4.5 Web App

$ git clone http://gitlab.tp.rulingcom.com/orbit_chiu1/orbit4-5.git your_site_name
$ cd your_site_name
$ vim config/mongoid.yml # 所有 orbit_4_5 換成 your_site_name, :wq 存檔離開
$ vim Gemfile # 加井字號註解掉 gem 'sassc-rails', '~>1.3.0' 並拿掉此行 #gem 'sass-rails', '~> 4.0.2' 井字號取消註解
$ gem install nokogiri -v 1.7.0.1 #For Ubuntu 20.04LTS
$ bundle install
$ RAILS_ENV=production bundle exec rake assets:precompile
$ bundle exec unicorn_rails -c config/unicorn.rb -D -E production
$ sudo service nginx restart
$ # Login the new create site with rulingcom account and choose “Admin Area” to complete the registration of this new created site.

開啟crontab的log(獨立顯示)

Open the file

sudo vim /etc/rsyslog.d/50-default.conf

Find the line that starts with: #cron.*


uncomment that line, save the file, and restart rsyslog:

sudo service rsyslog restart

You should now see a cron log file here:  /var/log/cron.log

設定備份（以備份一週內容為例）

一、資料庫備份

#### 安裝postfix，以避免NO MTA installed.
sudo apt-get install -y postfix
sudo service postfix start
$ sudo crontab -e
# 內容如下：
0 3 * * * mongodump -o /home/backup/db/`date "+\%Y\%m\%d"`_db
0 4 * * * rm -fr /home/backup/db/`date --date="1 week ago" "+\%Y\%m\%d"`_db

二、R4.5 網站目錄備份

# 安裝 rsnapshot，如已安裝則直接編輯 /etc/rsnapshot.conf
$ sudo apt-get install rsnapshot -y
$ sudo vim /etc/rsnapshot.conf # 內容建附註 rsnapshot
$ sudo mkdir /home/backup
$ sudo mkdir /home/backup/orbit
$ sudo chmod 777 /home/backup/orbit
$ rsnapshot -t daily # 測試是否設定正確
$ sudo crontab -e # 加入下行內容後，儲存退出

15 4 * * * /usr/bin/rsnapshot daily

# 此為附註 rsnapshot

# 注意！該檔使用 tab 而非 space！

# find BACKUP LEVELS /INTERVALS part
# at this part, remove every lines with `retain` and then add the line below:
retain	daily	7

# find SNAPSHOT ROOT DIRECTORY part
# modify the snapshot dir path
snapshot_root	/home/backup/orbit

# find BACKUP POINTS / SCRIPTS part
# add R4.5 site backup
backup	/home/rulingcom		localhost/

三、定期壓縮與刪除 log

$ sudo vim /etc/logrotate.d/orbit # 內容見附註 logrotate
$ sudo logrotate -d /etc/logrotate.conf # 確認系統是否有使用 /etc/logrotate.d/orbit
$ sudo /usr/sbin/logrotate -f /etc/logrotate.conf #測試執行log壓縮程序，看是否能成功壓縮log

# 附註 logrotate
/home/rulingcom/*/*/log/*.log {
  daily
  rotate 7
  compress
  missingok
  notifempty
  copytruncate
  postrotate
    [ ! -f /run/nginx.pid ] || kill -USR1 `cat /run/nginx.pid`
  endscript
}

/home/rulingcom/*/*/*/log/*.log {
  daily
  rotate 7
  compress
  missingok
  notifempty
  copytruncate
  postrotate
    [ ! -f /run/nginx.pid ] || kill -USR1 `cat /run/nginx.pid`
  endscript
}


/var/log/mongodb/*.log {
  daily
  rotate 7
  compress
  missingok
  notifempty
  copytruncate
  postrotate
    [ ! -f /var/lib/mongodb/mongod.lock ] || kill -SIGUSR1 `cat /var/lib/mongodb/mongod.lock`
  endscript
}

四、主機開機網站自動起始

# 開機網站自動起始
$ sudo vim /etc/init.d/orbit # 內容見附註 orbit
$ sudo chmod 755 /etc/init.d/orbit
$ update-rc.d orbit defaults
$ sudo vim /etc/init.d/rc.local #內容見附註 rc.local1
$ sudo chmod 755 /etc/init.d/rc.local
$ sudo vim /etc/rc.local #內容見附註 rc.local
$ sudo chmod 755 /etc/rc.local
$ update-rc.d rc.local defaults
$ sudo systemctl start orbit
$ sudo systemctl enable mongod.service #ubuntu18.04以上適用(可在系統boot時，自動開啟mongo)
$ sudo mv /etc/init.d/mongod /etc/systemd/system/ && sudo systemctl enable mongod.service
$ sudo crontab -e #加入以下#內容
# @reboot /bin/bash -l -c "rm -f /tmp/mongodb-27017.sock && chown mongodb:mongodb /var/lib/mongodb/ -R && chown mongodb:mongodb /var/log/mongodb -R && /usr/sbin/service mongod restart && /etc/init.d/orbit restart"

# 附註 orbit
底下#!/bin/bash請務必要加
#!/bin/bash
### BEGIN INIT INFO
# Provides:     ruling.digital
# Required-Start:       $network
# Required-Stop:
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Start orbit daemon at boot time
# Description:       Start orbit daemon at boot time
### END INIT INFO
ORBIT_USER=rulingcom

if [ -f "/home/$ORBIT_USER/.rvm/scripts/rvm" ]; then
    source /home/$ORBIT_USER/.rvm/scripts/rvm
    rvm use default
else
    if  [ -f "/etc/profile.d/rvm.sh" ]; then
        source /etc/profile.d/rvm.sh
    elif [ "$1" != "setup" ]; then
        echo ""
        echo "-----------------------------------------------------"
        echo "Orbit server dependencies is missing. Please run setup first."
        echo "command:    service orbit setup"
        echo "-----------------------------------------------------"
        echo ""
        exit 0;
    fi
fi

ORBIT_SITES=`pwd`
ORBIT_GIT=http://gitlab.tp.rulingcom.com/saurabh/orbit4-5.git
NGINX_ORBIT_SITES=/etc/nginx/orbit_sites

RAILS_ENV=production

sig () {
    test -s "$ORBIT_ROOT/tmp/pids/unicorn.pid" && kill -$1 `cat $ORBIT_ROOT/tmp/pids/unicorn.pid`
}

get_orbit_root () {
    if [ ! -f $NGINX_ORBIT_SITES/$1 ]; then echo "Site $1 not found" && exit 0; fi
    ORBIT_ROOT=`cat $NGINX_ORBIT_SITES/$1 | grep 'root'   | grep -v '#' | xargs | awk '{print $2}'`;
    ORBIT_ROOT=${ORBIT_ROOT//"/public;"/""};
    if [ ! -d $ORBIT_ROOT ]; then echo "Site folder $ORBIT_ROOT not fount"; fi
}

start_orbit () {
    sig 0 $ORBIT_ROOT && echo >&2 "$ORBIT_ROOT Already running";
    echo "Starting $ORBIT_ROOT";
    sudo su -l $ORBIT_USER -c "cd $ORBIT_ROOT && bundle exec unicorn_rails -D -E $RAILS_ENV -c config/unicorn.rb";
}

case $1 in
start)
    if [ ! -z "$2" ]; then
        get_orbit_root $2
        start_orbit
    else
        for APP in `ls -1 $NGINX_ORBIT_SITES`; do
          get_orbit_root $APP;
          start_orbit;
        done
    fi

    exit 0;
    ;;
stop)
    while [ `whoami` != "root" ]; do
        if [ ! -z "$2" ]; then
            read -p "Stop Orbit $2? (y/n)  " CONFIRM
        else
            read -p "Stop All Orbits? (y/n)  " CONFIRM
        fi
        case "$CONFIRM" in
            y|Y ) break;;
            n|N ) exit 0;;
            * ) echo "(y/n)";;
        esac
    done
    if [ ! -z "$2" ]; then
        get_orbit_root $2
        echo "Stopping $ORBIT_ROOT"
        sig QUIT
    else
        for APP in `ls -1 $NGINX_ORBIT_SITES`; do
          get_orbit_root $APP;
          echo "Stopping $ORBIT_ROOT";
          sig QUIT && continue;
        done
    fi
    exit 0;
    ;;
force-stop)
    while true; do
        if [ ! -z "$2" ]; then
            read -p "Stop Orbit $2? (y/n)  " CONFIRM
        else
            read -p "Stop All Orbits? (y/n)  " CONFIRM
        fi
        case "$CONFIRM" in
            y|Y ) break;;
            n|N ) exit 0;;
            * ) echo "(y/n)";;
        esac
    done
    if [ ! -z "$2" ]; then
        get_orbit_root $2
        echo "Stopping $ORBIT_ROOT"
        sig TERM
    else
        for APP in `ls -1 $NGINX_ORBIT_SITES`; do
          get_orbit_root $APP;
          echo "Stopping $ORBIT_ROOT";
          sig TERM && continue;
        done
    fi
    exit 0;
    ;;
restart|reload)
    if [ ! -z "$2" ]; then
        get_orbit_root $2
        sig USR2 && echo "$ORBIT_ROOT reloaded OK" && exit 0
        echo >&2 "Couldn't reload $ORBIT_ROOT, starting instead"
        start_orbit
    else
        for APP in `ls -1 $NGINX_ORBIT_SITES`; do
          get_orbit_root $APP;
          sig USR2 && echo "$ORBIT_ROOT reloaded OK" && continue;
          echo >&2 "Couldn't reload $ORBIT_ROOT, starting instead";
          start_orbit;
        done
    fi
    exit 0;
    ;;
create)
    if [ "$0" == "/etc/init.d/orbit" ]; then
        echo "Don't use service to create."
        echo "Use:  orbit create $2"
        exit 0
    fi
    test -s "$NGINX_ORBIT_SITES/$2" && echo "Site $2 already exist." && exit 0
    test -s "$ORBIT_SITES/$2" && echo "File $ORBIT_SITES/$2 already exist." && exit 0

    while true; do
      read -p "nginx server name: " SERVER_NAME
      if [ ! -z "$SERVER_NAME" ]; then break; fi
    done

    while true; do
      read -p "port number: " PORT
      if [ ! -z "$PORT" ]; then break; fi
    done

    while true; do
      read -p "database name: " DATABASE
      if [ ! -z "$DATABASE" ]; then break; fi
    done

    echo "-----------------------------------------------------"
    echo "Path: $ORBIT_SITES/$2"
    echo "Database: $DATABASE"
    echo http://$SERVER_NAME:$PORT
    echo "-----------------------------------------------------"

    while true; do
        read -p "Create Orbit $2? (y/n)  " CONFIRM
        case "$CONFIRM" in
            y|Y ) break;;
            n|N ) exit 0;;
            * ) echo "(y/n)";;
        esac
    done

    cd ~
    sudo wget http://installer.tp.rulingcom.com/nginx4-5.conf
    sudo cp nginx4-5.conf $NGINX_ORBIT_SITES/$2
    sudo rm nginx4-5.conf
    sudo perl -pi -e "s/{{ORBIT}}/$2/g" $NGINX_ORBIT_SITES/$2
    sudo perl -pi -e "s#{{ORBIT_SITES}}#${ORBIT_SITES}#g" $NGINX_ORBIT_SITES/$2
    sudo perl -pi -e "s/{{PORT}}/$PORT/g" $NGINX_ORBIT_SITES/$2
    sudo perl -pi -e "s/{{SERVER_NAME}}/$SERVER_NAME/g" $NGINX_ORBIT_SITES/$2
    sudo service nginx reload

    sudo su -l $ORBIT_USER -c "cd $ORBIT_SITES && git clone $ORBIT_GIT $2 && cd $2 && bundle"
    sudo su -l $ORBIT_USER -c "cd $ORBIT_SITES/$2 && perl -pi -e \"s/orbit_4_5/$DATABASE/g\" config/mongoid.yml"
    sudo su -l $ORBIT_USER -c "cd $ORBIT_SITES/$2 && bundle exec rake assets:precompile RAILS_ENV=production"
    sudo su -l $ORBIT_USER -c "cd $ORBIT_SITES/$2 && bundle exec unicorn_rails -D -E $RAILS_ENV -c $ORBIT_SITES/$2/config/unicorn.rb"
    sudo su -l $ORBIT_USER -c "cd $ORBIT_SITES/$2 && bundle exec rake orbit_cron:install"

    echo "-----------------------------------------------------"
    echo "$2 is ready"
    echo "Path: $ORBIT_SITES/$2"
    echo http://`ifconfig eth0 2>/dev/null|awk '/inet addr:/ {print $2}'|sed 's/addr://'`:$PORT
    echo "-----------------------------------------------------"

    exit 0
    ;;
setup)
    sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 7F0CEB10
    sudo echo 'deb http://downloads-distro.mongodb.org/repo/ubuntu-upstart dist 10gen' | sudo tee /etc/apt/sources.list.d/mongodb.list

    sudo apt-get update
    sudo apt-get -y upgrade
    sudo apt-get install -y nginx git-core mongodb-org imagemagick curl openssh-server nano

    sudo mkdir $NGINX_ORBIT_SITES
    sudo perl -pi -e "s/sites-enabled/orbit_sites/g" /etc/nginx/nginx.conf
    sudo rm -r /etc/nginx/sites-*

    sudo apt-get --no-install-recommends --yes install gawk g++ gcc make libc6-dev libreadline6-dev zlib1g-dev libssl-dev libyaml-dev libsqlite3-dev sqlite3 autoconf libgdbm-dev libncurses5-dev automake libtool bison pkg-config libffi-dev

    sudo su -l $ORBIT_USER -c "\curl -sSL https://get.rvm.io | bash -s stable"
    sudo su -l $ORBIT_USER -c "rvm install 2.1 --default"
    echo "gem: --no-ri --no-rdoc" > /home/$ORBIT_USER/.gemrc
    source /home/$ORBIT_USER/.rvm/scripts/rvm

    echo ""
    echo "-----------------------------------------------------"
    echo "System is ready. You can start creating Orbit servers."
    echo "command:    orbit create Orbit_Folder_Name"
    echo "-----------------------------------------------------"
    echo ""
    exit 0
    ;;
*)
    echo >&2 "Usage $0 <start|stop|restart|force-stop|create|setup>"
    exit 1
    ;;
esac

# 附註 rc.local1
#! /bin/sh
### BEGIN INIT INFO
# Provides:          rc.local
# Required-Start:    $all
# Required-Stop:
# Default-Start:     2 3 4 5
# Default-Stop:
# Short-Description: Run /etc/rc.local if it exist
### END INIT INFO


PATH=/sbin:/usr/sbin:/bin:/usr/bin

. /lib/init/vars.sh
. /lib/lsb/init-functions

do_start() {
        if [ -x /etc/rc.local ]; then
                [ "$VERBOSE" != no ] && log_begin_msg "Running local boot scripts (/etc/rc.local)"
                /etc/rc.local
                ES=$?
                [ "$VERBOSE" != no ] && log_end_msg $ES
                return $ES
        fi
}

case "$1" in
    start)
        do_start
        ;;
    restart|reload|force-reload)
        echo "Error: argument '$1' not supported" >&2
        exit 3
        ;;
    stop)
        ;;
    *)
        echo "Usage: $0 start|stop" >&2
        exit 3
        ;;
esac


### 五、網路設定
```sh
# 開機網站自動起始
$ sudo vim /etc/netplan/50-cloud-init.yaml # 內容見附註 50-cloud-init.yaml 18.04開始設定改這
# $ sudo vim /etc/netplan/00-installer-config.yaml  # Ubuntu 20.04LTS
#

# 50-cloud-init.yaml
# 本範例有兩塊網卡，第一塊是DHCP，第二塊是固定IP
# 其中因為子網路遮罩為255.255.255.0 ，所以是 /24
# This file is generated from information provided by the datasource.  Changes
# to it will not persist across an instance reboot.  To disable cloud-init's
# network configuration capabilities, write a file
# /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following:
# network: {config: disabled}
network:
    ethernets:
        enp0s29u1u1u5:
            dhcp4: true
        enp6s0:
            addresses:
            - 192.168.1.142/24
            gateway4: 192.168.1.1
            nameservers:
                addresses:
                - 8.8.8.8
                search:
                - rulingcom.com
    version: 2
## 六、如果 /etc/init.d/mongod 遺失(適用於ubuntu14.04以上)
```sh
# 建立 mongod service
$ sudo vim /etc/init.d/mongod  #請查看以下/etc/init.d/mongod之內容
$ sudo chmod +x /etc/init.d/mongod

#此為/etc/init.d/mongod之內容
#!/bin/bash
case $1 in 
start)
	if [ -f "/var/lib/mongodb/mongod.lock" ]; then
		exit 0
	else
		self_pid=$$
		pid=`ps aux | grep mongod | grep -v 'service' | grep -v 'grep' | grep -v '/etc/init.d' | awk '{print $2}'`;
		COUNTER=0
		for i in $pid
		do
			if [ -f "/proc/$i/status" ]; then
				echo "$i"  >> /var/lib/mongodb/mongod.lock;
				COUNTER=$((COUNTER+1))
			fi
		done
		if [ $COUNTER == 0 ]; then
			echo "starting mongo."
			sudo mongod --config /etc/mongod.conf &
			exit 0
		else
			echo "mongo is already running."
		fi
	fi
	;;
stop)
	echo "stoping mongo."
	if [ -f "/var/lib/mongodb/mongod.lock" ]; then
		sudo kill -s TERM `cat /var/lib/mongodb/mongod.lock`
		sudo rm -f /var/lib/mongodb/mongod.lock
	else
		pid=`ps aux | grep mongod | grep -v 'service' | grep -v 'grep' | grep -v '/etc/init.d' | awk '{print $2}'`;
		for i in $pid
		do
			kill -s TERM $i
		done
	fi
	;;
restart|reload)
	echo "stoping mongo."
	if [ -f "/var/lib/mongodb/mongod.lock" ]; then
		sudo kill -s TERM `cat /var/lib/mongodb/mongod.lock`
		sudo rm -f /var/lib/mongodb/mongod.lock
	else
		pid=`ps aux | grep mongod | grep -v 'service' | grep -v 'grep' | grep -v '/etc/init.d' | awk '{print $2}'`;
		for i in $pid
		do
			kill -s TERM $i
		done
	fi
	sudo mongod --config /etc/mongod.conf &
	exit 0
	;;
status)
	if [ -f "/var/lib/mongodb/mongod.lock" ]; then
		pid=`cat /var/lib/mongodb/mongod.lock`
		COUNTER=0
		ERRORPID=0
		for i in $pid
		do
			if [ -f "/proc/$i/status" ]; then
				COUNTER=$((COUNTER+1))
			else
				ERRORPID=1
			fi
		done
		if [ $ERRORPID == 0 ] && [ $COUNTER != 0 ]; then
			echo "mongo is already running"
		else		
			COUNTER=0
			pid=`ps aux | grep mongod | grep -v 'service' | grep -v 'grep' | grep -v '/etc/init.d' | awk '{print $2}'`;
			cat /dev/null  > /var/lib/mongodb/mongod.lock;
			for i in $pid
			do
				if [ -f "/proc/$i/status" ]; then
					echo "$i"  >> /var/lib/mongodb/mongod.lock;
					COUNTER=$((COUNTER+1))
				fi
			done
			if [ $COUNTER == 0 ]; then
				echo "mongo is not running."
			else
				echo "mongo is already running."
			fi
		fi
	else
		COUNTER=0
		pid=`ps aux | grep mongod | grep -v 'service' | grep -v 'grep' | grep -v '/etc/init.d' | awk '{print $2}'`;
		for i in $pid
		do
			if [ -f "/proc/$i/status" ]; then
				echo "$i"  >> /var/lib/mongodb/mongod.lock;
				COUNTER=$((COUNTER+1))
			fi
		done
		if [ $COUNTER == 0 ]; then
			echo "mongo is not running."
		else
			echo "mongo is already running."
		fi
	fi
esac

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Ubuntu 安裝 R4.5 標準流程

前置作業

建立 rulingcom 帳號（若已是 rulingcom 帳號，前往下一步驟）

下載裝機script並執行(除了網站的部分需手動，其餘皆已改為自動，其他內容不用再執行)

安裝libgmp(Ubuntu 14.04需要)

安裝 Nginx 1.14

安裝 MongoDB 3.2.22

安裝 ImageMagick 6.9.7-4 (部份預設模組需要處理圖片，此為相依軟體)

Ubuntu 20.04 才需要的步驟

設定host IP(避免VM抓不到domain對應的IP)

安裝 RVM (Ruby 版本和套件的管理程式)

若以上安裝RVM失敗可用另一種方式安裝RVM和ruby

安裝screen

安裝 R4.5

一、建立 ssh key pair

二、安裝 R4.5 Web App

開啟crontab的log(獨立顯示)

Open the file

Find the line that starts with: #cron.*

設定備份（以備份一週內容為例）

一、資料庫備份

二、R4.5 網站目錄備份

三、定期壓縮與刪除 log

四、主機開機網站自動起始

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