操作場景

海量文件服務適用于共享訪問的場景，當業務中需要使用多臺云主機訪問同一文件系統時，您可以通過我們提供的腳本，填寫配置文件、執行腳本命令，實現多臺云主機批量掛載同一文件系統，減少操作時間，提高工作效率。

操作步驟

1. 登錄天翼云控制中心，單擊管理控制臺左上角的，選擇地域。

2. 選擇“計算>彈性云主機”，進入彈性云主機控制臺頁面，找到即將執行批量掛載操作的任何一臺云主機。

3. 以root用戶登錄該彈性云主機，登錄方法參考登錄Linux彈性云主機。

4. 創建并填寫配置文件inventory。

   1）在Linux vi命令行工具中依次執行以下命令創建配置文件inventory并打開。

   touch inventory

   vi inventory

   2）將按照下述格式填寫的內容復制到配置文件inventory中，保存并退出。需要將各參數替換成相應的實際值，各參數說明見下方表格。配置文件內容可在Windows記事本中或者Linux vi命令實現編輯，供后續使用。復制完成后輸入 :wq保存并退出。

   [all:vars]
   share_path=掛載地址
   [target_host]
   彈性IP passwd=root用戶密碼 local_path=本地掛載路徑
   彈性IP passwd=root用戶密碼 local_path=本地掛載路徑
   彈性IP passwd=root用戶密碼 local_path=本地掛載路徑
   ……

   參數	說明
   云主機彈性IP	在云主機詳情頁中“彈性IP”頁簽獲取該云主機公網IP的IP地址。
   root用戶密碼	root用戶密碼。
   本地掛載路徑	本地掛載路徑為云主機上用于掛載文件系統的本地路徑，本操作中將通過腳本自動創建，無須額外創建。
   掛載地址	可在文件系統詳情頁獲取。

5. 創建批量掛載腳本auto_batch_mount.sh。

   1）創建腳本文件，并打開：

   touch auto_batch_mount.sh

   vi auto_batch_mount.sh

   2）將下列內容復制到掛載腳本中，保存退出 （:wq）：

   #!/bin/bash
   
   # configure password-free
   function ssf_free_login() {
       success_install_expect=0
       # Check if expect is installed
       type expect &>/dev/null
       if [ $? -eq 0 ]; then
           echo "Expect is already installed."
           success_install_expect=1
       else
           echo "Expect is not installed. Install now..."
           # Install expect if file exists
           if type yum &>/dev/null; then
               yum install -y expect
           elif type apt-get &>/dev/null; then
               apt install expect || (
                   apt update
                   apt install expect -y
               )
           else
               echo "Unsupported operating system."
               exit 1
           fi
           success_install_expect=1
       fi
   
       if [ $success_install_expect -eq 0 ]; then
           echo "Expect installation failed."
           exit 1
       fi
   
       [ ! -f /root/.ssh/id_rsa.pub ] && ssh-keygen -t rsa -P "" -f /root/.ssh/id_rsa
       # conf file
       config_file="inventory"
       target_hosts=$(awk '/^\[target_host\]/{flag=1;next}/^\[/{flag=0}flag' "$config_file")
       while read line; do
           # export ip
           ip=$(echo "$line" | awk '{print $1}')
           # export password
           pass_word=$(echo "$line" | awk -F 'passwd=' '{print $2}' | awk '{print $1}')
           expect &lt;<eof spawn="" ssh-copy-id="" $ip="" expect="" {="" "yes="" no"="" send="" "yes\n";exp_continue="" }="" "password"="" "$pass_word\n";exp_continue="" eof="" done="" <<<"$target_hosts"="" #="" check="" if="" ansible="" is="" installed="" function="" install_ansible()="" command="" -v="">/dev/null 2&gt;&amp;1 || {
           if [ -f /etc/redhat-release ]; then
               echo "Install ansible now......"
               sudo yum install -y ansible
           elif [ -f /etc/lsb-release ]; then
               echo "Install ansible now......"
               apt install -y ansible
           else
               echo "Unsupported operating system."
               exit 1
           fi
       }
   }
   
   ssf_free_login
   install_ansible
   
   # Run Ansible playbook
   if [ -f inventory ] &amp;&amp; [ -f mount_nfs.yml ]; then
       ansible-playbook -i inventory mount_nfs.yml
   else
       echo "One or both files are missing."
       exit 1
   fi

6. 創建ansible腳本執行的yml文件：mount_nfs.yml。
   1）創建yml文件，并打開：

   touch mount_nfs.yml

   vi mount_nfs.yml

   2）復制下述內容到yml文件中，保存退出 （:wq）：

   說明

   可根據實際需求修改mount_nfs.yml末尾處tasks中掛載命令的參數，參數說明請參考掛載NFS文件系統到彈性云主機 (Linux)。

   ---
   - name: Test Connectivity
     hosts: all
     gather_facts: false
     tasks:
       - name: "Check whether node is reachable"
         action:  ping
         ignore_errors: false
         tags: sfs_ping
   
   - name: Install NFS Client
     hosts: all
     gather_facts: yes
     tasks:
       - name: Install NFS Client on CentOS
         yum:
           name: nfs-utils
           state: present
         when: ansible_distribution == 'CentOS'
         ignore_errors: yes
   
       - name: Install NFS Client on Ubuntu
         apt:
           name: nfs-common
           state: present
         when: ansible_distribution == 'Ubuntu'
         ignore_errors: yes
   
   - name: Creat local path
     hosts: all
     gather_facts: false
     tasks:
       - name: "Create local mount path"
         file:
           path: "{{local_path}}"
           state: directory
   
   
   - name: Check if local_path is mounted
     hosts: target_host
     gather_facts: yes
     tasks:
       - name: Check if local_path is mounted
         command: "mountpoint {{ local_path }}"
         ignore_errors: yes
         register: mountpoint_check
         failed_when: false
   
       - name: Fail if local_path is mounted on any host
         assert:
           that: "not mountpoint_check.rc == 0"
           success_msg: "local_path is not mounted on any host."
           fail_msg: "local_path is mounted on at least one host."
   
   - name: Mount NFS Filesystems
     hosts: target_host
     gather_facts: yes
     tasks:
       - name: Mount NFS Share
         mount:
           src: "{{share_path}}"
           path: "{{local_path}}"
           fstype: nfs
           opts: "vers=3,proto=tcp,async,nolock,noatime,nodiratime,wsize=1048576,rsize=1048576,timeo=600"
           state: mounted
         become: yes

7. 執行批量掛載腳本。執行時注意不同操作系統執行命令不同。

   CentOS操作系統

   sh auto_batch_mount.sh

   Ubuntu操作系統

   bash auto_batch_mount.sh

   執行成功結果可參考下圖。

   

   也可執行 df -h命令，查看當前云主機是否已經當前掛載文件系統，參考下圖。