鍐呯綉闆嗙兢鍑嗗悓姝hell鑴氭湰

Posted 2021-01-03

鏍囩锛?a href='http://www.mamicode.com/so/1/cloc' title='cloc'>cloc   auth   one   tab   The   闆嗙兢   鍚堝苟   keygen   second   

鍦ㄥ叕鍙哥殑鍐呯綉涓厤缃泦缇ゅ悓姝ワ紝鍙兘鏄唬鐞嗛棶棰橈紝ntpd鍜宑hrony閮芥病鏈夌敤锛屾墍浠ュ彧濂藉啓shell鑴氭湰瑙ｅ喅

鍓嶆彁鏉′欢闆嗙兢涓悇鍙版満鍣ㄥ凡缁忛厤缃ソ浜嗗厤瀵嗙櫥褰?/p>

涓€銆佸厤瀵嗙櫥褰曢厤缃?/p>

1. 鐢?root 鐢ㄦ埛鐧诲綍銆傛瘡鍙版湇鍔″櫒閮界敓鎴愬叕閽ワ紝鍐嶅悎骞跺埌 authorized_keys銆?br>2. CentOS 榛樿娌℃湁鍚姩 ssh 鏃犲瘑鐧诲綍 锛屾瘡鍙版湇鍔″櫒閮借閰嶇疆 /etc/ssh/sshd_config銆?br>vi /etc/ssh/sshd_config 淇敼
UseDNS no
PubkeyAuthentication yes
3. 姣忓彴鏈嶅姟鍣ㄤ笅閮借緭鍏ュ懡浠?ssh-keygen -t rsa锛岀敓鎴?key锛屼竴寰嬩笉杈撳叆瀵嗙爜锛岀洿鎺ュ洖杞︼紝/root 灏变細鐢熸垚 .ssh 鏂囦欢澶广€?br>4. 鍦?Master 鏈嶅姟鍣ㄤ笅锛屽悎骞跺叕閽ュ埌 authorized_keys 鏂囦欢锛岃繘鍏?/root/.ssh 鐩綍锛岄€氳繃 SSH 鍛戒护鍚堝苟.
cat id_rsa.pub>> authorized_keys
ssh [email protected] cat ~/.ssh/id_rsa.pub>> authorized_keys
ssh [email protected] cat ~/.ssh/id_rsa.pub>> authorized_keys
5. 鎶?Master 鏈嶅姟鍣ㄧ殑 authorized_keys銆乲nown_hosts 澶嶅埗鍒?Slave 鏈嶅姟鍣ㄧ殑 `/root/.ssh 鐩綍
scp authorized_keys [email protected]:/root/.ssh/
scp authorized_keys [email protected]:/root/.ssh/
scp known_hosts [email protected]:/root/.ssh/
scp known_hosts [email protected]:/root/.ssh/

浜屻€佸噯鍚屾鑴氭湰timer.sh锛屽湪master涓绘満鐨勬椂闂翠笂鍔犱簡5绉掗挓锛屽洜涓烘墽琛岃剼鏈湁鐐瑰欢杩燂紝灏嗗噯鍚屾鐨勮寖鍥寸缉灏?/p>

#!/usr/bin/env bash

#hosts array

hosts=("bigdata02" "bigdata03" "bigdata04" "bigdata05")

#localhost current time 

date1=`date "+%Y/%m/%d %H:%M:%S"`
date2=`date -d "$date1 5 second" +"%Y/%m/%d %H:%M:%S"`

echo "Now the time is $date1"

#loop host to set time

for hostname in ${hosts[*]}

do

    theDay=`date -d "$date2" +"%Y-%m-%d"`
    theTime=`date -d "$date2" +"%H:%M:%S"`
    
    echo $hostname

    ssh -t $hostname bash -c "鈥榙ate -s 鈥?theDay鈥?&&hwclock --systohc鈥?
    ssh -t $hostname bash -c "鈥榙ate -s 鈥?theTime鈥?&&hwclock --systohc鈥?

done

涓夈€佸湪master涓婅缃畾鏃朵换鍔?/p>

閰嶇疆centos7瀹氭椂浠诲姟 姣忓皬鏃舵墽琛屼竴娆?寮€鍚畾鏃朵换鍔?systemctl start crond
systemctl enable crond.service
缂栬緫褰撳墠crontab锛岃緭鍏?crontab -e
* */1 * * * sh /home/timer.sh