实验拓扑结构
可实时监测文件变化，在文件发生变化后及时同步到rsyncd服务器
环境为rocky linux 10.1
cat /etc/redhat-release
Rocky Linux release 10.1 (Red Quartz)
首先搭建rsync服务器
dnf -y install rsync rsync-daemon
groupadd -r rsync
useradd -r -s /sbin/nologin -M -g rsync rsync
mkdir -p /backup/web{1,2}
chown -R rsync:rsync /backup
vim /etc/rsyncd.passwd
web1:web1
web2:web2
chmod 600 /etc/rsyncd.passwd
systemctl enable --now rsyncd
测试rsync服务器连接
在web1上执行测试
dnf -y install rsync
echo web1 > /etc/rsyncd.client.passwd
chmod 600 /etc/rsyncd.client.passwd
mkdir /web1
cd /web1
for i in {1..10}; do echo i \> i.txt; done
rsync -avz /web1/ web1@192.168.230.142::web1 --password-file=/etc/rsyncd.client.passwd
在web2上执行测试
dnf -y install rsync
echo web2 > /etc/rsyncd.client.passwd
chmod 600 /etc/rsyncd.client.passwd
mkdir /web2
cd /web2
for i in {a..k};do echo i \> i.txt; done
rsync -avz /web2/ web2@192.168.230.142::web2 --password-file=/etc/rsyncd.client.passwd
在web1和web2上编译安装lsyncd
git clone https://github.com/lsyncd/lsyncd.git
dnf config-manager --enable crb
dnf -y install "@Development Tools"
dnf -y install make cmake gcc lua lua-devel
cd lsyncd/
mkdir build
cd build
cmake ..
make -j4
make install
web1上准备lsyncd配置文件
默认有delete选项，两边文件保持一持
通过delay值调整同步延迟，设置为0时近乎实时
mkdir -p /var/log/lsyncd
vim /etc/lsyncd.conf
settings {
statusFile = "/tmp/lsyncd.stat",
logfile = "/var/log/lsyncd/lsyncd.log",
statusInterval = 1,
insist = true,
nodaemon = true,
}
sync{
default.rsync,
source="/web1/",
target="web1@192.168.230.142::web1",
delay = 1,
rsync = {
binary = "/usr/bin/rsync",
archive = yes,
verbose = yes,
compress = yes,
password_file = "/etc/rsyncd.client.passwd",
}
}
web2上准备lsyncd配置文件
mkdir -p /var/log/lsyncd
vim /etc/lsyncd.conf
settings {
statusFile = "/tmp/lsyncd.stat",
logfile = "/var/log/lsyncd/lsyncd.log",
statusInterval = 1,
insist = true,
nodaemon = true,
}
sync{
default.rsync,
source="/web2/",
target="web2@192.168.230.142::web2",
delay = 1,
rsync = {
binary = "/usr/bin/rsync",
archive = yes,
verbose = yes,
compress = yes,
password_file = "/etc/rsyncd.client.passwd",
}
}
web1和web2上准备服务启动文件
vim lsyncd.service
Unit
Description=Live sync daemon
After=network.target
Service
Type=simple
ExecStart=/usr/local/bin/lsyncd --nodaemon /etc/lsyncd.conf
ExecReload=/bin/kill -HUP $MAINPID
KillMode=process
Restart=on-failure
RestartSec=2s
Install
WantedBy=multi-user.target
install -Dm600 lsyncd.service /usr/lib/systemd/system/lsyncd.service
启动服务并设置开机自启
systemctl enable --now lsyncd
效果测试方法
在rsync服务器上，使用命令watch -n 0.5 'tree'观测目录结构变化，在web1或web2上添加/删除文件或目录，观察同步情况
在rsync服务器上，使用命令watch -n 0.5 'cat /web2/test/t.txt'观测文件内容变化，在web2上修改文件内容，观察同步情况