Persistence journalctl log clearing command ho bona tlhaloso e qaqileng ea liparamente tsa tlhophiso

neng kapa nengKhoebolikopano tsa webmasterMySQL database, Apache le lits'ebetso tse ling li ke ke tsa qala joalo ka tloaelo,LinuxSistimi e tla u khothaletsa ho e sebelisa journalctl -ex laela ho e sheba.

• Li-logs tse amanang le tsona hangata li ka fumanoa kapele.
• Ka mor'a ho hlahloba log ka tsela ena, bothata bo ka rarolloa ka potlako.

Koranta e bolelang?

Litlhaloso tsa motheo tsa koranta:

• n. Letsatsi le letsatsi, koranta, bukana ea litaba, likhatiso, limakasine, limakasine; [accounting] ledger
• Phapang
• likoranta tse ngata

Phehella litlaleho tsa koranta

Phehello ke mokhoa oa ho fetolela data ea lenaneo lipakeng tsa linaha tse phehellang le tsa nakoana.

Ho latela maemo, data ea nakoana (joalo ka data e ka memoring e ke keng ea bolokoa ka ho sa feleng), ho phehella ho tla tsoelapele ho ba le data e tsitsitseng (joalo ka ho phehella ha database, e ka bolokoang nako e telele).

HoCentOS Ho 7.X, systemd e laola lintlha tsa ho qala bakeng sa likarolo tsohle.

• Systemd-journald ke ts'ebeletso e tsoelang pele ea taolo ea likoranta e laoloang ke systemd.
• E bokella lits'oants'o tse tsoang kernel mme li-daemone tsa sistimi li ntse li sebetsa nakong ea karolo ea pele ea sistimi.
• Melaetsa e tloaelehileng ea tlhahiso le liphoso, hammoho le li-logs tsa syslog.

Journalctl log tsela

Tšebeletso ea log e boloka feela lifaele tsa log ka sebopeho se le seng.

E latelang ke sistimi ea CentOS 7 VestaCPPhanele ea taolo, tsela ea polokelo ea li-logs tsa journalctl ▼

/var/log/journal

• Hobane li-log li hatelloa le ho hlophisoa data ea binary, ha u shebella leBoemokapele haholo.

taelo ea ho sheba tlaleho ea journalctl

Laela ntle le likhetho tsa ho etsa hore journalctl e hlahise ho rema lifate kaofela ▼

journalctl

• Ha e le hantle sena ha se na thuso hobane hang-hang u tla "apareloa" ke moroallo oa ho rema lifate o tla u sithabetsa.

Ka mor'a moo, re tla ithuta mokhoa oa ho sefa lintlha tsa bohlokoa tsa log.

Sheba nako e behiloengboqhetsekeKena

Sebelisa likhetho tse latelang tsa litaelo ho seta nako ▼

--since
--until

• Nako e ikarabella bakeng sa ho hlakisa lirekoto tsa log pele le ka mor'a nako e fanoeng.

Litekanyetso tsa nako li ka ba ka mefuta e fapaneng, joalo ka tse latelang ▼

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"

• Haeba likarolo tse ling tsa sebopeho se ka holimo li sa tlatsoa, ​​tsamaiso e tla tlatsa ka ho toba litekanyetso tsa kamehla.
• Mohlala, haeba karolo ea letsatsi e se na batho, letsatsi la hajoale le hlahisoa ka kotloloho.
• Haeba karolo ea nako e sa sebelisoe, "00:00:00" (har'a mp'a bosiu) e sebelisoa ka ho sa feleng.
• Sebaka sa metsotsoana le sona se ka tloheloa se se na letho.

Boleng ba kamehla ke "00", mohlala taelo e latelang ▼

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

Ho feta moo, journalctl e utloisisa litekanyetso tse itseng mme e rehiloe li-shorthands.

• Mohlala, o ka sebelisa "maobane", "kajeno", "hosane" kapa "hona joale".

Mohlala, ho fumana data ea log ea maobane, o ka sebelisa taelo e latelang ▼

journalctl --since yesterday

Ho fumana lintlha ho tloha ka 9:00 hoseng ho fihlela hora ea ho qetela, u ka sebelisa taelo e latelang ▼

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

Ntlafatso ea nako ea 'nete e shebelle tlaleho ea journalctl

le tail -f taelo e tšoana, journalctl e tšehetsa -f khetho ea ho bonts'a li-log ka nako ea sebele ▼

journalctl -f

Haeba u batla ho bona logi ea nako ea 'nete ea sesebelisoa, ka kopo eketsa khetho ea -u ▼

$ sudo journalctl -f -u prometheus.service

Hlahisa feela mela e mecha ea n ho journalctl

khetho ea line ea taelo -n E sebelisoa ho laola feela mela ea morao-rao ea n ea log.

Ntho ea kamehla ke ho bonts'a mela e 10 ea morao-rao ea lifate qetellong ▼

$ sudo journalctl -n

U ka boela ua hlahisa logi e nang le palo e itseng ea mela qetellong ▼

$ sudo journalctl -n 20

E latelang ke lenane la morao-rao la mela e meraro le bontšang tšebeletso ea cron.service ▼

$ journalctl -u cron.service -n 3

Ebe网络 营销Batho ba sebelisa VPShaha sebaka sa marang-rang, kenya sebaka sa taolo sa VestaCP, hahaWordpresswebosaete.

sebedisa kgafetsa df -h Laela ho lekola bokhoni ba disk ea VPS mme u fumane hore e ntse e nyoloha ka mokhoa oa 1GB ka khoeli (hopola hore e ne e le 1GB khoeling e fetileng)

[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

Sheba litlaleho tsa journalctl u sebelisa taelo ea bokhoni

Sheba lenane la hona joale la journalctl u sebelisa taelo ea disk capacity ▼

journalctl --disk-usage

logctl e se nang letho ea ho hlakola

Kaha Linux ke sistimi e bonolo haholo ea ts'ebetso, haeba u hlakola lifaele ka phoso, ho bonolo ho baka ho senyeha ha sistimi.

Ka hona, ho hloekisa loggia ea journalctl, ka kopo e tlose ka letsatsi le bokhoni bo lumelletsoeng ho bolokoa.

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

Haeba u batla ho hlakola lifaele tsa log ka letsoho, u hloka ho potoloha (ho potoloha) log pele u hlakola.

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

journalctl lokisa bokhoni bo tsitsitseng

Ho etsa hore tlhophiso e phehelletsoeng ea "journal limit persistance", o ka fetola faele ea tlhophiso ea Journald ▼

/etc/systemd/journald.conf

SystemMaxUse=16M

ForwardToSyslog=no

Ebe, qala hape koranteng ▼

systemctl restart systemd-journald.service

Na lethathamo la cheke le lokile?Na lifaele tsa log li ntse li le teng ebile ha lia senyeha? ▼

journalctl --verify

Se latelang ke VPS disk capacity ka mor'a ho hloekisa loggia ea journalctl, le journalctl log capacity▼

[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.

Tlhaloso e felletseng ea persistent journalctl log, mona ke pheletso ^_^