实时同步文件到远程服务器：Lsyncd - Live Syncing (Mirror) Daemon

[root@centos76 ~]# wget http://www.lua.org/ftp/lua-5.3.4.tar.gz
[root@centos76 ~]# cd lua-5.3.4
[root@centos76 lua-5.3.4]# yum install -y gcc gcc-c++ readline-devel
[root@centos76 lua-5.3.4]# make linux
[root@centos76 lua-5.3.4]# make install
[root@centos76 lua-5.3.4]# wget http://mirror.centos.org/centos/8/BaseOS/x86_64/os/Packages/lua-libs-5.3.4-11.el8.x86_64.rpm
[root@centos76 lua-5.3.4]# rpm -ivh lua-libs-5.3.4-11.el8.x86_64.rpm 

[root@centos76 ~]# yum install cmake
[root@centos76 ~]# git clone https://github.com/axkibe/lsyncd.git
[root@centos76 ~]# cd lsyncd
[root@centos76 lsyncd]# ./distclean.sh
[root@localhost lsyncd]# cmake .
[root@localhost lsyncd]# make 
[root@localhost lsyncd]# make install

[root@labserver .ssh]# cat /etc/lsyncd.conf
settings {
    logfile = "/var/log/lsyncd.log",        --日志路径
    statusFile = "/var/log/lsyncd.status",  --状态文件
    pidfile = "/var/run/lsyncd.pid",        --pid文件路径
    statusInterval = 1,                     --状态文件写入最短时间
    nodaemon = false,                       --daemon运行
    maxProcesses = 1,                       --最大进程
    maxDelays = 10,                         --最大延迟
    insist = 1,                             --有错误不退出
}
sync {
    default.rsyncssh,
    source = "/tmp/test/",                  --源目录
    delete = true,                          --保持完全同步
    host = "root@172.22.27.181",
    targetdir = "/tmp/test/",               --目标目录
    exclude={
             "*.sw*"                        --不同步文件
    },
    rsync = {
        binary = "/usr/bin/rsync",          --使用rsync同步
        archive = true,                     --归档
        compress = false,                   --压缩
        owner = true,                       --属主
        perms = true,                       --权限
        links = true,                       --copy link
        whole_file = false,
        },
    ssh = {
        port = 22
        }
}
sync {                                      --另一个同步对象
    default.rsyncssh,
    source = "/tmp/test/",
    delete = true,
    host = "root@172.22.27.75",
    targetdir = "/tmp/test/",
    exclude={
             "*.sw*"
    },
    rsync = {
        binary = "/usr/bin/rsync",
        archive = true,
        compress = false,
        owner = true,
        perms = true,
        links = true,
        whole_file = false,
        },
    ssh = {
        port = 22
        }
}

[root@labserver .ssh]# ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa): 
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:8HOIswkaHD3InjBvJz/P8zUaxk150IZpIXqlPa6B3lM root@labserver
The key's randomart image is:
+---[RSA 2048]----+
|        . o      |
| . o   . = =     |
|o + o o o B o    |
| * o . * + =     |
|  O o + S E .    |
| . * o * O .     |
|  . o + B +      |
|     +.. = .     |
|      ooo        |
+----[SHA256]-----+
[root@labserver .ssh]# ls
id_rsa  id_rsa.pub  known_hosts  known_hosts.old
[root@labserver .ssh]# ssh-copy-id root@172.22.27.60
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
root@172.22.27.60's password: 

Number of key(s) added: 1

Now try logging into the machine, with:   "ssh 'root@172.22.27.60'"
and check to make sure that only the key(s) you wanted were added.

[root@labserver .ssh]#

[root@labserver .ssh]# cat /usr/lib/systemd/system/lsyncd.service
[Unit]
Description=Live Syncing (Mirror) Daemon
After=network.target

[Service]
Type=simple
ExecStart=/usr/local/bin/lsyncd -nodaemon /etc/lsyncd.conf

[Install]
WantedBy=multi-user.target

[root@labserver .ssh]# systemctl start lsyncd.service
[root@labserver .ssh]# systemctl enable lsyncd.service 
Created symlink from /etc/systemd/system/multi-user.target.wants/lsyncd.service to /usr/lib/systemd/system/lsyncd.service.