Otu esi etinye NTP na RHEL 8
Inwe oge usoro ziri ezi na ihe nkesa Linux dị ezigbo mkpa n'ihi ọtụtụ ihe sistemụ dị ka ederede ndabere na ọtụtụ ọrụ dabere na oge. Enwere ike idobe oge ziri ezi site na iji usoro oge Network Time Protocol (NTP).
NTP bụ usoro ochie, nke ama ama yana n'ofe ikpo okwu emebere iji mekọrịta clocks nke kọmputa na netwọkụ. Ọ na-ejikọkarị kọmputa na sava oge ịntanetị ma ọ bụ ebe ndị ọzọ, dị ka redio ma ọ bụ satịlaịtị nnata ma ọ bụ ọrụ modem ekwentị. Enwere ike iji ya dị ka isi mmalite/ihe nkesa maka sistemụ ndị ahịa.
Na RHEL Linux 8, a naghị akwado ngwugwu ntp yana chronyd (daemon na-agba na oghere onye ọrụ) nke enyere na ngwugwu oge.
chrony na-arụ ọrụ ma dị ka ihe nkesa NTP yana dịka onye ahịa NTP, nke a na-eji emekọrịta elekere sistemụ na sava NTP, enwere ike iji ya mekọrịta elekere sistemụ na elekere ntụaka (dịka onye nata GPS).
A na-ejikwa ya mekọrịta elekere sistemụ na ntinye oge ntuziaka, yana dịka ihe nkesa NTPv4 ma ọ bụ ndị ọgbọ iji nye ọrụ oge na kọmputa ndị ọzọ na netwọk.
N'isiokwu a, anyị ga-egosi gị otu esi etinye ma hazie ihe nkesa NTP na onye ahịa site na iji ngwugwu oge na nkesa RHEL 8 Linux.
NTP Server - RHEL 8: 192.168.56.110 NTP Client - CentOS 7: 192.168.56.109
Otu esi etinye Chrony na RHEL 8
Iji wụnye suite chrony, jiri njikwa ngwugwu DNF ndị a dị ka ndị a. Iwu a ga-etinye ihe ndabere akpọrọ timedatex.
# dnf install chrony
Chrony suite nwere chronyd, na chronyc, ngwa ahịrị iwu nke a na-eji agbanwe paramita ọrụ dị iche iche yana nyochaa arụmọrụ ya mgbe ọ na-agba ọsọ.
Ugbu a bido ọrụ chronyd, mee ka ọ malite na akpaaka na sistemụ buut wee nyochaa ọkwa na-agba site na iji iwu systemctl ndị a.
# systemctl start chronyd # systemctl status chronyd # systemctl enable chronyd
Otu esi ahazi sava NTP site na iji Chrony na RHEL 8
Na ngalaba a, anyị ga-egosi otu esi edobe sava RHEL 8 gị ka ọ bụrụ ihe nkesa oge NTP ukwu. Mepee faịlụ nhazi /etc/chrony.conf site na iji ndezi ederede ọ bụla ọkacha mmasị gị.
# vi /etc/chrony.conf
Mgbe ahụ, chọọ ntuziaka nhazi kwe wee kwupụta ya ma tọọ uru ya na netwọkụ ma ọ bụ adreesị subnet nke a na-ahapụ ndị ahịa ka ha jikọọ.
allow 192.168.56.0/24
Chekwaa faịlụ ma mechie ya. Mgbe ahụ malitegharịa nhazi ọrụ chronyd ka itinye mgbanwe ndị na-adịbeghị anya.
# systemctl restart chronyd
Na-esote, mepee ohere ịnweta ọrụ NTP na nhazi firewalld iji nye ohere maka arịrịọ NTP na-abata n'aka ndị ahịa.
# firewall-cmd --permanent --add-service=ntp # firewall-cmd --reload
Otu esi ahazi onye ahịa NTP iji Chrony na RHEL 8
Akụkụ a na-egosi otu esi ahazi chrony ka onye ahịa NTP ozugbo na sava CentOS 7 anyị. Malite site na ịwụnye ngwungwu chrony site na iji iwu yum na-esonụ.
# yum install chrony
Ozugbo arụnyere, ị nwere ike ịmalite, mee ma chọpụta ọkwa ọrụ chronyd site na iji iwu systemctl ndị a.
# systemctl start chronyd # systemctl enable chronyd # systemctl status chronyd
Na-esote, ịkwesịrị ịhazi usoro ahụ ka onye ahịa nke sava NTP ozugbo. Mepee faịlụ nhazi /etc/chrony.conf yana onye ndezi ederede.
# vi /etc/chrony.conf
Iji hazie usoro dị ka onye ahịa NTP, ọ kwesịrị ịma nke sava NTP ọ kwesịrị ịjụ maka oge ugbu a. Ị nwere ike dee ihe nkesa site na iji ihe nkesa ma ọ bụ ntụziaka ọdọ mmiri.
Yabụ kwupụta sava NTP ndabara akọwapụtara dị ka uru nke ntuziaka ihe nkesa, wee tọọ adreesị RHEL 8 gị kama.
server 192.168.56.110
Chekwaa mgbanwe na faịlụ ma mechie ya. Mgbe ahụ malitegharịa nhazi ọrụ chronyd maka mgbanwe ndị na-adịbeghị anya ka ọ rụọ ọrụ.
# systemctl restart chronyd
Ugbu a, gbaa iwu a ka igosi isi mmalite oge dị ugbu a (ihe nkesa NTP) chronyd na-enweta, nke kwesịrị ịbụ adreesị nkesa NTP gị.
# chronyc sources
Na nkesa, mee iwu na-esonụ iji gosipụta ozi gbasara ndị ahịa NTP na-enyocha ihe nkesa NTP.
# chronyc clients
Maka ozi ndị ọzọ gbasara otu esi eji chronyc utility, mee iwu a.
# man chronyc
Ọ gwụla! N'ime edemede a, anyị egosila otu esi etinye na hazie ihe nkesa NTP na RHEL 8 site na iji chrony suite. Anyị gosikwara otu esi ahazi onye ahịa NTP na CentOS 7.
Ọ bụrụ na ị nwere ajụjụ ọ bụla gbasara akụkọ a, jiri ụdị nkọwa dị n'okpuru jụọ ajụjụ ma ọ bụ ajụjụ ọ bụla.