Persistent journalctl log clearing command kuti uone tsananguro yakadzama yezvigadziriso paramita

chero nguvaE-commercewebmaster kusanganaMySQL database, Apache uye zvimwe zvinoshandiswa hazvigone kutangwa semazuva ese,LinuxIyo sisitimu ichakukurudzira iwe kushandisa journalctl -ex raira kuti uone.

• matanda anoenderana anogona kuwanikwa nekukurumidza.
• Mushure mekuongorora danda nenzira iyi, dambudziko rinogona kugadziriswa nekukurumidza.

Journal inorevei?

Journal tsananguro yakakosha:

• n. Zuva nezuva, diary, diary; periodicals, magazines, magazines; [accounting] ledger
• Variation
• akawanda majenari

Ramba uchinyora zvinyorwa

Kushingirira ndiyo dhizaini yekushandura dhata rechirongwa pakati pezvinoramba zvichiitika uye zvenguva pfupi.

Mukutaura kwevasina basa, data yenguva pfupi (senge-mu-memory data isingagoni kuchengetwa zvachose), kushingirira kunoenderera kune data rinoramba riripo (sekuramba kwedatabase, rinogona kuchengetwa kwenguva yakareba).

muCentOS Mu7.X, systemd inogadzirisa matanda ekutanga emayuniti ese.

• Systemd-journald inzira inofambira mberi yekutonga kwejenari inotungamirwa nesystemd.
• Iyo inounganidza matanda kubva ku kernel uye system madhimoni ari kumusoro uye achimhanya panguva yekutanga boot chikamu che system.
• Yakajairika kuburitsa uye kukanganisa meseji, pamwe ne syslog logs.

journalctl log nzira

Iyo log sevhisi inongochengeta mafaira egi muchimiro chimwe chete.

Inotevera ndiyo CentOS 7 system VestaCPKudzora pani, chengetedza nzira yejournalctl log ▼

/var/log/journal

• Nekuti matanda anomanikidzwa uye akafomatidzwa mabhinari data, kana uchiona uyePositioningvery fast.

journalctl view log command

Raira pasina chero sarudzo kugadzira journalctl kuburitsa kwese kutema ▼

journalctl

• Hazvina basa nekuti unobva wango "kurirwa" nemafashama ekucheka matanda anozokuputira.

Tevere, isu tichadzidza nzira yekusefa yakakosha ruzivo rwegi.

Ona nguva yakatarwamutoriDanda

Shandisa anotevera ekuraira sarudzo kuseta nguva yenguva ▼

--since
--until

• Nguva yenguva ine basa rekutsanangura rekodhi rekodhi pamberi uye mushure menguva yakapihwa.

Huwandu hwenguva hunogona kuve hwakasiyana mafomati, senge anotevera ▼

YYYY-MM-DD HH:MM:SS

如果你想检查在2018年3月8日晚上8点20分之后日志，请输入以下命令 ▼

journalctl --since "2018-03-26 20:20:00"

• Kana zvimwe zvikamu zvefomati iri pamusoro zvisina kuzadzwa mukati, sisitimu inozadza zvakananga mumitsetse yakasarudzika.
• Semuenzaniso, kana chikamu chezuva chisina kugarwa, zuva razvino rinoratidzwa zvakananga.
• Kana chikamu chenguva chisina kugarwa, "00:00:00" (pakati pehusiku) inoshandiswa nekukasira.
• Nzvimbo yemasekonzi inogonawo kusiiwa isina chinhu.

Iko kukosha kweiyo "00", semuenzaniso unotevera murairo ▼

journalctl --since "2018-03-26" --until "2018-03-26 03:00"

Pamusoro pezvo, journalctl inonzwisisa humwe hunhu uye yakanzi shorthands.

• Semuenzaniso, unogona kushandisa "nezuro", "nhasi", "mangwana" kana "ikozvino".

Semuenzaniso, kuti uwane nezuro regi data, unogona kushandisa unotevera kuraira ▼

journalctl --since yesterday

Kuti uwane matanda kubva 9:00am kusvika awa yekupedzisira, unogona kushandisa unotevera kuraira ▼

journalctl --since 09:00 --until "1 hour ago"

Real-time update view journalctl log

pamwe tail -f command yakafanana, journalctl inotsigira -f sarudzo yekuratidza matanda munguva chaiyo ▼

journalctl -f

Kana iwe uchida kuona iyo chaiyo-nguva log yemudziyo, ndapota wedzera iyo -u sarudzo ▼

$ sudo journalctl -f -u prometheus.service

Ratidza mitsetse n mitsva chete mujenalictl

command line options -n Inoshandiswa kudzora chete yazvino n mitsara yelogi.

Iyo yakasarudzika ndeye kuratidza yazvino mitsetse gumi yematanda kumagumo ▼

$ sudo journalctl -n

Iwe unogona zvakare kuratidza danda rine nhamba yakatarwa yemitsara kumagumo ▼

$ sudo journalctl -n 20

Inotevera ndiyo ichangoburwa-mitsara yemitsara mitatu inoratidza iyo cron.service sevhisi ▼

$ journalctl -u cron.service -n 3

Wana网络 营销Vanhu vanoshandisa VPSkuvaka webhusaiti, isa iyo VestaCP control panel, kuvakaWordPresswebhusaiti.

shandisa kazhinji df -h Raira kuti utarise iyo VPS dhisiki kugona uye woona kuti iri kusimuka pachimiro che1GB pamwedzi (rangarira kuti yaive 1GB mwedzi wapfuura)

[root@ten ~]# df -h

Filesystem      Size  Used Avail Use% Mounted on

/dev/simfs       20G  7.5G   13G  38% /

devtmpfs        256M     0  256M   0% /dev

tmpfs           256M     0  256M   0% /dev/shm

tmpfs           256M  244K  256M   1% /run

tmpfs           256M     0  256M   0% /sys/fs/cgroup

tmpfs            52M     0   52M   0% /run/user/0

Wona journalctl matanda uchishandisa simba rekuraira

Tarisa yazvino journalctl log uchishandisa dhisiki simba rekuraira ▼

journalctl --disk-usage

journalctl empty delete log

Sezvo Linux iri yakanyanya kuoma sisitimu yekushandisa, zviri nyore kukonzeresa kuparara kwehurongwa kana ukadzima mafaera zvisizvo.

Naizvozvo, kuti uchenese matanda ejenalictl, ndapota adzime zvinoenderana nezuva uye nemvumo yakachengetwa.

journalctl --vacuum-time=2d
journalctl --vacuum-size=500M

Kana iwe uchida kudzima mafaira egi nemaoko, unofanirwa kutenderera (kutenderera) irogi usati wadzima.

systemctl kill --kill-who=main --signal=SIGUSR2 systemd-journald.service

journalctl gadzirisa zvinoramba zviripo

Kuti ugone kugonesa kurongeka kwemuganho wemuganho, unogona kushandura faira yekumisikidza yejournad ▼

/etc/systemd/journald.conf

SystemMaxUse=16M

ForwardToSyslog=no

Wobva watangazve kunyorwa ▼

systemctl restart systemd-journald.service

Cheki log yakanaka here?Mafaira elogi akakwana uye haana kukuvara here? ▼

journalctl --verify

Inotevera ndiyo VPS dhisiki kugona mushure mekuchenesa iyo journalctl log, uye journalctl log kugona▼

[root@ten /]# df -h

Filesystem      Size  Used Avail Use% Mounted on

/dev/simfs       20G  5.7G   15G  29% /

devtmpfs        256M     0  256M   0% /dev

tmpfs           256M     0  256M   0% /dev/shm

tmpfs           256M  308K  256M   1% /run

tmpfs           256M     0  256M   0% /sys/fs/cgroup

tmpfs            52M     0   52M   0% /run/user/0

[root@ten /]# journalctl --disk-usage

Archived and active journals take up 24.0M on disk.

Tsananguro yakadzama yepersistent journalctl log, uku ndiko kupera ^_^