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yum -y install gcc make automake libtool

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unzip inotify-tools-3.14.zip

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mkdir /app/user1/inotify

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# 切换目录
cd inotify-tools-3.14
# 生成构建文件
./autogen.sh
# 编译安装
./configure --prefix=/app/user1/inotify
make && make install

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/app/user1/inotify/bin/inotifywait  --help

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# 生成key，交互信息按需填写
$ ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key (/app/user1/.ssh/id_rsa): /app/user1/.ssh/sync_rsa
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /app/user1/.ssh/sync_rsa
Your public key has been saved in /app/user1/.ssh/sync_rsa.pub
The key fingerprint is:
SHA256:e0RJLVOpA3UIRuW2ZuaDDax5YC4UANrhmWhhSjt8jBI user1@iZ2ze7bklij42hatrh8jn6Z
The key's randomart image is:
+---[RSA 3072]----+
|E=o    .++++o.   |
|*===   ..o+oo    |
|=*=o.    .=+     |
|o o  . . oo.     |
|    . o S *.     |
|   . o + @       |
|    . + + =      |
|     . . . .     |
|                 |
+----[SHA256]-----+

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$ cat .ssh/sync_rsa.pub
ssh-rsa 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 user1@iZ2ze7bklij42hatrh8jn6Z

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# 切换目录
cd ~/.ssh
# 创建文件
touch authorized_keys
# 增加公钥信息，公钥是上面查到的
echo "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABgQC54fNyxqiQndRoFpFQ5Uv6tbgXo6NjrDmvRnXyoqyHJ6pgoZyP+KvlChxXn8NQgW5SP+orPKY95A1VHIAUi314oV9m2hxZrH208bAfCLE2/t2PyKmnmjaduS2Jw8Ox1/ddm4Q1nzdjAg2a+CgMnkcFzTYYP8pJq6yAayHAjcUnRmx89SG8T2WErB1/CZY7g64HawilpgoyaZoIpMmyZIJ8gmhAhXqe7ms9qYF9W05aaQ9JrHQXWkIZYBsGtnKR3ehznZoWlxHBz/u2GFqiD3cVFieZlZE2FOjBvus/FdAGBz1CeIF5V6A1RmbjacmYAzM3ZfnHVEJyHbTg5yQHZGjJW8VDcpkawj6KjJt4qFL2wazkMMwGdeaIaTjPgLNm1K4SAdnxLZB/Wq9zS6aMG/biP2HFPsuww8xdrrWQnaIaD7Xdgqk6VCh1yetb43YXY9uShT6FpVfQNAoyezN+UdTIqfMCSLFCITzZrSdhKlSWJ8yuwKjmLGLU3GGQnEzmp90= user1@iZ2ze7bklij42hatrh8jn6Z" >> authorized_keys

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# 使用证书文件尝试连接对端服务器
ssh -i .ssh/sync_rsa user2@XX.XXX.XXX.XX

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mkdir ~/scripts
cd ~/scripts

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#!/bin/bash
#set -eux
## 源目录
src_path="/app/user1/webroot/img_static/"
## 目标目录
dest_path="/app/user2/webroot/img_static/"
dest_user="user2"
dest_ip="XX.XXX.XXX.XX"
log_path="/app/user1/scripts/sync.log"

if [ ! -e "$(dirname $log_path)" ]; then
        mkdir -p "$(dirname $log_path)"
fi

/app/user1/inotify/bin/inotifywait -mrq --timefmt '%d/%m/%y %H:%M:%S' --format '%T|%w%f|%e' -e close_write,delete,create,attrib $src_path | while read file; do
        f_name="$(echo $file | awk -F '|' '{print $2}')"
        if [[ $(basename "$f_name") =~ ^\..* ]]; then
                continue
        fi

        if [ -f "$f_name" ]; then
                file_dest_path="$(dirname $f_name)/"
                relative_path="${f_name#$src_path}"
                rsync -vzrtopgR -e "ssh -i /app/user2/.ssh/sync_rsa" "${src_path}./${relative_path}" $dest_user@$dest_ip:$dest_path >>"$log_path" 2>&1
                echo "file ${file} was rsynced" >>"$log_path"
        else
                rsync -vzrtopg -e "ssh -i /app/user2/.ssh/sync_rsa" "$src_path" $dest_user@$dest_ip:$dest_path >>"$log_path" 2>&1
                echo "dir ${file} was rsynced" >>"$log_path"
        fi
done

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nohup  bash /app/user1/scripts/sync.sh &

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0 */2 * * * rsync -vzrtopg --progress "/app/user1/webroot/img_static/" user2@XX.XXX.XXX.XX:/app/user3/webroot/img_static/ >>"/app/user1/scripts/sync.log" 2>&1

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$ crontab -e
You (user1) are not allowed to use this program (crontab)
See crontab(1) for more information