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[Linux]Centos7 ¿¡¼­ NTP ¼­¹ö¸¦ ±¸ÃàÇÏ¿© ½Ã°£ µ¿±âÈ­
Date : 2022-02-25
Name : ¼­¹ö¸ó
Hits : 7677

¾È³çÇϼ¼¿ä. ÁÖ½Äȸ»ç ¼­¹ö¸ó ÀÔ´Ï´Ù.


Áö³­ Æ÷½ºÆà ¿¡¼­´Â date ¸í·É¾î¸¦ ÀÌ¿ëÇØ Æó¼â¸Á¿¡¼­ÀÇ ½Ã°£µ¿±âÈ­ ¹æ¹ýÀ» ¾Ë¾ÆºÃ´Âµ¥¿ä.

¿À´ÃÀº ¸®´ª½º ȯ°æ¿¡¼­ °£´ÜÇÏ°Ô NTP¼­¹ö¸¦ ±¸ÃàÇÏ°í Ŭ¶óÀ̾ðÆ® ¿¡¼­ ½Ã°£µ¿±âÈ­¸¦ ÇÏ´Â ¹æ¹ýÀ»

¾Ë¾Æº¸µµ·Ï ÇÏ°Ú½À´Ï´Ù.


date ¸í·É¾î¸¦ ÀÌ¿ëÇÑ ½Ã°£ µ¿±âÈ­


NTP(Network Time Protocol) ´Â PC¿Í PC°£ÀÇ (ȤÀº server-client) ½Ã°£À» µ¿±âÈ­ ÇϱâÀ§ÇØ »ç¿ëµÇ´Â Protocol ÀÔ´Ï´Ù.
½Ã°£ µ¿±âÈ­¸¦ Çϴ ¹æ¹ý¿¡´Â Å¬¶óÀ̾ðÆ® PC°¡ Á÷Á¢ ¿ÜºÎ ½Ã°£¿¡ Å¬¶óÀ̾ðÆ®°¡ µ¿±âÈ­ ÇÒ ¼öµµ ÀÖ°í,
Á÷Á¢ NTP ¼­¹ö¸¦ ±¸ÃàÇؠŬ¶óÀ̾ðÆ®°¡ ¼­¹öÀÇ ½Ã°£¿¡ µ¿±âÈ­ Çϵµ·Ï ±¸¼ºÇÒ ¼öµµ ÀÖ½À´Ï´Ù.
À̹ø Æ÷½ºÆà¿¡¼­´Â ÀÎÅͳÝÀÌ °¡´ÉÇÑ 1°³ÀÇ ¼­¹ö¿¡¼­ NTP ¼­¹ö¸¦ ±¸ÃàÇÏ°í,
ÀÎÅͳÝÀÌ ºÒ°¡´ÉÇѠŬ¶óÀ̾ðÆ®°¡ ÀÌ NTP¼­¹ö¿¡ ½Ã°£À» µ¿±âÈ­ ÇÒ ¼ö ÀÖµµ·Ï ±¸¼ºÇØ º¸°Ú½À´Ï´Ù.





1. NTP ¼­¹ö ±¸¼º

NTP ¼­¹ö¿¡¼­ ½Ã°£ µ¿±âÈ­¸¦ À§ÇÑ ÆÐÅ°Áö (chrony)¸¦ ¼³Ä¡ÇÕ´Ï´Ù.
ÃÖ¼Ò»ç¾ç ¼³Ä¡°¡ ¾Æ´Ï¶ó¸é ±âº»ÀûÀ¸·Î ¼³Ä¡°¡ µÇ¾î ÀÖ½À´Ï´Ù.
ÀÎÅͳÝÀÌ µÇ´Â È¯°æÀ̶ó¸é yum install À» ÅëÇØ ¼³Ä¡ÇؾߠÇϸç,
ÀÎÅͳÝÀÌ ºÒ°¡´ÉÇÑ È¯°æÀ̶ó¸é local yum ȯ°æÀ» ¸¸µé¾î ¼³Ä¡ÇØ¾ß ÇÕ´Ï´Ù.



2. Chrony.conf ¼öÁ¤

# vi /etc/chrony.conf

¾Æ·¡¿Í °°ÀÌ ±âÁ¸ NTP Ç®Àº ºñÈ°¼ºÈ­ ÇÏ°í , ¿ÜºÎ·Î ºÎÅÍ ´ëÇѹα¹ Ç¥Áؽø¦ ¹Þ¾Æ¿Í¾ß ÇϹǷΠkr ¼­¹ö·Î Ç¥Áؽø¦ µ¿±âÈ­ Çϵµ·Ï ¼³Á¤ÇÕ´Ï´Ù.



3. NTP ¼­ºñ½º °ü·Ã ¹æÈ­º® Çã¿ë.

# firewall-cmd --add-service=ntp --permanent

# firewall-cmd --reload



4. chronyd.service Àç½ÃÀÛ

# systemctl restart chronyd.service

chronyd µ¥¸óÀ» Àç½ÃÀÛ ÈÄ sources ¸í·ÉÀ» ÅëÇØ µ¿±âÈ­µÇ°í ÀÖÀ½À» È®ÀÎÇÒ ¼ö ÀÖ½À´Ï´Ù.




5. NTP Å¬¶óÀ̾ðÆ® ¼³Á¤

Ŭ¶óÀ̾ðÆ® ¿ª½Ã chrony µ¥¸óÀÌ ¼³Ä¡µÇ¾î ÀÖ¾î¾ß ÇÕ´Ï´Ù.
¸¶Âù°¡Áö·Î ÀÎÅͳÝÀÌ µÇÁö ¾Ê±â ¶§¹®¿¡ local yumÀ» ÅëÇØ ¼³Ä¡Çϰųª ÆÐÅ°Áö¸¦ °¡Á®¿Í ¼³Ä¡ ÇÕ´Ï´Ù.




6. hostname ÁöÁ¤

Ŭ¶óÀ̾ðÆ®´Â ¾Õ¼­ ±¸ÃàÇÑ ntp ¼­¹ö¿Í ½Ã°£À» µ¿±âÈ­ ÇÒ ¿¹Á¤À̹ǷÎ, ¿ì¼± ¼­¹ö È£½ºÆ®¸íÀ» ÁöÁ¤ÇÕ´Ï´Ù.
# vi /etc/hosts
192.168.0.232 ntp-server



7. client ¼­¹ö chrony.conf ¼öÁ¤

# vi /etc/chrony.conf

Ŭ¶óÀ̾ðÆ®¿¡¼­µµ ¸¶Âù°¡Áö·Î ±âÁ¸ chrony ½Ã°£ µ¿±âÈ­ Ç®Àº ÁÖ¼® Ã³¸®Çϸç,
¾Õ¼­ ¼³Á¤ÇÑ ntp-server·Î ½Ã°£ µ¿±âÈ­ ¼­¹ö¸¦ ÁöÁ¤ ÇÕ´Ï´Ù.




8. client server chronyd.service restart

# systemctl restart chronyd.service

µ¥¸ó Àç½ÃÀÛ ÈÄ, ¼Ò½º¸¦ È®ÀÎÇØ º¸¸é ntp-server·Î ÀâÈù °ÍÀ» È®ÀÎÇÒ ¼ö ÀÖ½À´Ï´Ù.



end..



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Content
Name
Date
Hits
2022-02-25
7677

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