若提示「Permissions 0644 for ‘/root/.ssh/id_rsa’ are too open」,而且斷開鏈接。ssh
仔細閱讀了一下ssh文檔和這句提示,大概的意思時ssh的私有密鑰的權限開放尺度太大了,能夠供人隨意欣賞了,ssh自身的策略關閉了ssh。post
解決方案:將權限由0644下降爲0600lua
chmod 0600 ~/.ssh/id_rsacentos7
問題2:ssh免密登陸出現問題再從新寫入key的時spa
解決辦法是加參數ssh-copy-id -f root@IP強制從新寫入或者寫入新的key ssh-keygen -R IP(B),前者可行 寫入後能正常登陸
加-f的時候須要嘗試登陸一下------>實際上
客戶端執行ssh-copyid 服務端用戶名@服務端ip
此步驟須要輸入密碼。
執行成功後會在服務端生成~/.ssh/authorized_keys
文件,文件內容和客戶端生成的id_rsa.pub
內容徹底一致。
再次執行ssh 用戶名@ip
就不用輸入密碼了。
2、安裝rsync + lsyncd
centos7: yum -y install lsyncd
ubuntu18: apt install lsyncd
看具體狀況 安裝lsyncd依賴包
centos的配置文件是/etc/lsyncd.conf ubuntu的配置文件是/etc/lsyncd/lsyncd.conf.lua 且ubuntu要手動建立/etc/lsyncd文件夾、log文件、status文件,centos不用 其餘都同樣
3、配置lsyncd
1.若是有example案例文件複製成配置文件
cp /usr/share/doc/lsyncd-2.1.5/examples/lrsync.lua /etc/lsyncd.conf
2. 編輯lsyncd配置文件
centos 7
位置:/etc/lsyncd.conf
----
-- User configuration file for lsyncd.
--
-- Simple example for default rsync, but executing moves through on the target.
--
-- For more examples, see /usr/share/doc/lsyncd*/examples/
--
-- 分發服務器
settings {
logfile ="/var/log/lsyncd/lsyncd.log", ---->須要配置或建立具體的文件目錄或者文件
statusFile = "/var/log/lsyncd/lsyncd.stat",
statusInterval = 1,
maxProcesses = 10, ---->這裏變成10會報錯 只能1個進程
nodaemon = false,
maxDelays = 7
}
sync{
default.rsyncssh,
source="/www/wwwroot/www.xxx.com",
host="192.168.0.1",
init = false, --->通常爲false 服務啓動的時候不會報錯
targetdir="/www/wwwroot/test.com",
delete = true,
delay = 0,
rsync = {
binary = "/usr/bin/rsync",
archive = true, --歸檔
compress = true, --壓縮
verbose = true,
owner = true, --屬主
perms = true, --權限
_extra = {"--bwlimit=2000"},
},
ssh = {
port = 22
}
}
sync{
default.rsyncssh,
source="/www/wwwroot/www.xxx.com",
host="192.168.0.2",
init = false,
targetdir="/www/wwwroot/test.com",
delete = true,
delay = 0,
rsync = {
binary = "/usr/bin/rsync",
archive = true, --歸檔
compress = true, --壓縮
verbose = true,
owner = true, --屬主
perms = true, --權限
_extra = {"--bwlimit=2000"},
},
ssh = {
port = 22
}
}
雙向同步
ubuntu 18
文件位置: /etc/lsyncd/lsyncd.conf.lua
settings { logfile = "/var/log/lsyncd/lsyncd.log", statusFile = "/var/log/lsyncd/lsyncd.status" } sync { default.rsyncssh, source = "/www/wwwroot/test.com", host = "47.244.107.27", targetdir = "/www/wwwroot/www.XXX.com", init = false, delay=0, rsync = { binary = "/usr/bin/rsync", archive = true, compress = true, --壓縮傳輸默認爲true。在帶寬與cpu負載之間權衡,本地目錄同步能夠考慮把它設爲false verbose = true }, ssh = { port = 22 } }
4、啓動服務,並設置開機啓動
1. 啓動lsyncd服務
-----centos7 lsyncd /etc/lsyncd.conf ---->檢查配置信息是否正確 systemctl start lsyncd systemctl status lsyncd systemctl restart lsyncd -----ubuntu18 /etc/init.d/lsyncd restart
/etc/init.d/lsyncd start
/etc/init.d/lsyncd status ----------------------------
2. 啓動完成查看lsyncd狀態,確保lsync啓動成功
3. 設置開機啓動
systemctl enable lsyncd