Yadda ake Shigar NTP a cikin RHEL 8

Samun cikakken tsarin lokaci a kan sabar Linux yana da matukar mahimmanci saboda abubuwa da yawa na tsarin kamar su rubutattun littattafai da ƙarin aiki bisa lokaci. Za'a iya samun cikakkiyar ajiyar lokaci ta amfani da yarjejeniyar Network Time Protocol (NTP).

NTP tsohuwar tsohuwa ce, sananniyar sananniyar yarjejeniya ce wacce aka tsara don daidaita agogon kwamfutoci akan hanyar sadarwa. Yana yawan haɗa komputa zuwa sabobin lokacin Intanet ko wasu kafofin, kamar rediyo ko mai karɓar tauraron dan adam ko sabis na modem na tarho. Hakanan za'a iya amfani dashi azaman tushe/sabar lokaci don tsarin abokin ciniki.

A cikin RHEL Linux 8, ba a tallafawa kunshin ntp kuma ana aiwatar da shi ta hanyar chronyd (daemon da ke gudana a sararin mai amfani) wanda aka bayar a cikin kunshin chrony.

chrony tana aiki duka azaman sabar NTP kuma a matsayin abokin cinikin NTP, wanda ake amfani dashi don daidaita agogon tsarin da sabobin NTP, kuma ana iya amfani dashi don daidaita agogon tsarin tare da agogon tunani (misali mai karɓar GPS).

Hakanan ana amfani dashi don aiki tare da agogo na tsarin tare da shigar da lokacin jagora, kuma azaman uwar garken NTPv4 ko abokan aiki don samar da sabis na lokaci ga sauran kwamfutocin cikin hanyar sadarwa.

A cikin wannan labarin, za mu nuna muku yadda za a girka da saita sabar NTP da abokin ciniki ta amfani da kunshin chrony a cikin RHEL 8 Linux rarraba.

NTP Server - RHEL 8:  192.168.56.110
NTP Client - CentOS 7:  192.168.56.109

Yadda ake girka Chrony a cikin RHEL 8

Don girka ɗakin chrony, yi amfani da mai sarrafa kunshin DNF mai zuwa kamar haka. Wannan umarnin zai girka abin dogaro da ake kira timedatex.

# dnf install chrony

Theungiyar chrony ta ƙunshi chronyd, da chronyc, mai amfani da layin umarni wanda ake amfani dashi don canza sigogin aiki daban-daban da kuma lura da aikin sa yayin da yake gudana.

Yanzu fara sabis na chronyd, ba shi damar farawa ta atomatik a tsarin boot kuma tabbatar da yanayin gudana ta amfani da dokokin systemctl masu zuwa.

# systemctl start chronyd
# systemctl status chronyd
# systemctl enable chronyd

Yadda Ake Sanya Server NTP Ta Amfani da Chrony a RHEL 8

A wannan sashin, za mu nuna yadda za a saita sabar RHEL 8 uwar garken lokacin NTP. Buɗe /etc/chrony.conf fayil ɗin daidaitawa ta amfani da kowane editan da aka fi so da rubutu.

# vi /etc/chrony.conf

Bayan haka sai a nemi a ba da izini umarnin daidaitawa da rashin gamsuwa da shi kuma saita darajarta zuwa cibiyar sadarwar ko adireshin yanar gizo wanda aka ba abokan ciniki damar haɗi.

allow 192.168.56.0/24

Adana fayil ɗin kuma rufe shi. Sannan sake kunna jeren sabis na chronyd don amfani da canje-canje kwanan nan.

# systemctl restart chronyd

Na gaba, buɗe hanyar zuwa sabis na NTP a cikin daidaitawar wuta don ba da izinin buƙatun NTP mai shigowa daga abokan ciniki.

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

Yadda za a Sanya Abokin NTP Amfani da Chrony a cikin RHEL 8

Wannan sashin yana nuna yadda ake tsara chrony a matsayin abokin NTP kai tsaye a cikin sabar mu ta CentOS 7. Fara da shigar da kunshin chrony ta amfani da umarnin yum mai zuwa.

# yum install chrony

Da zarar an girka, zaku iya farawa, kunna da tabbatar da matsayin sabis ɗin chronyd ta amfani da dokokin systemctl masu zuwa.

# systemctl start chronyd
# systemctl enable chronyd
# systemctl status chronyd

Na gaba, kuna buƙatar saita tsarin a matsayin abokin cinikin kai tsaye na uwar garken NTP. Buɗe /etc/chrony.conf fayil ɗin daidaitawa tare da editan tushe-rubutu.

# vi /etc/chrony.conf

Don saita tsarin azaman abokin cinikin NTP, yana buƙatar sanin waɗanne sabobin NTP yakamata su nemi lokacin yanzu. Kuna iya tantance sabobin ta amfani da sabar ko umarnin wurin wanka.

Don haka yi tsokaci kan tsoffin sabobin NTP da aka kayyade azaman darajar umarnin uwar garke, kuma saita adireshin uwar garken RHEL 8 maimakon haka.

server 192.168.56.110

Adana canje-canje a cikin fayil ɗin kuma rufe shi. Sannan sake kunna jigon sabis na chronyd don canje-canje kwanan nan don fara aiki.

# systemctl restart chronyd

Yanzu aiwatar da umarni mai zuwa don nuna tushen lokacin yanzu (uwar garken NTP) wanda chronyd ke samun dama, wanda yakamata ya zama adireshin uwar garken NTP naka.

# chronyc sources 

A kan sabar, gudanar da umarni mai zuwa don nuna bayanai game da abokan NTP masu kimanta sabar NTP.

# chronyc clients

Don ƙarin bayani game da yadda ake amfani da mai amfani da chronyc, gudanar da wannan umarni.

# man chronyc

Shi ke nan! A cikin wannan labarin, mun nuna yadda za a girka da saita sabar NTP a cikin RHEL 8 ta amfani da suron krony. Mun kuma nuna yadda ake tsara abokin cinikin NTP akan CentOS 7.

Idan kuna da wasu tambayoyi game da wannan labarin, yi amfani da fom ɗin sharhi da ke ƙasa don yin tambayoyi ko tambayoyi.