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планирование_выполнения_заданий_в_linux [2011/03/04 09:42] val |
планирование_выполнения_заданий_в_linux [2021/10/04 13:25] val [Сервис cron] |
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| ====== Планирование выполнения заданий в Linux ====== | ====== Планирование выполнения заданий в Linux ====== | ||
| - | |||
| - | [[https://help.ubuntu.com/community/CronHowto]] | ||
| ===== Примеры периодических задач ===== | ===== Примеры периодических задач ===== | ||
| - | ==== Ротация файлов регистрации (logrotate) ==== | + | * [[Сервис ротации журналов]] |
| + | * [[Сервис Clamav#Журнал]] сервиса Clamav | ||
| + | * [[Управление ПО в Linux]] (обновление) | ||
| + | * [[Резервное копирование]] | ||
| + | ===== Сервис cron ===== | ||
| - | === Глобальная настройка logrotate === | + | * [[https://ru.wikipedia.org/wiki/Cron|cron - Материал из Википедии]] |
| - | <code> | + | * [[Коды завершения#Простая система мониторинга]] |
| - | # cat /etc/logrotate.conf | + | * Сервис Git [[Сервис Git#Пример с использованием cron]] |
| - | ... | + | |
| - | include /etc/logrotate.d | + | |
| - | ... | + | |
| - | </code> | + | |
| - | === Настройка logrotate для сервиса clamd по умолчанию === | ||
| - | <code> | ||
| - | # cat /etc/logrotate.d/clamav-daemon | ||
| - | </code><code> | ||
| - | /var/log/clamav/clamav.log { | ||
| - | rotate 12 | ||
| - | weekly | ||
| - | compress | ||
| - | delaycompress | ||
| - | create 640 clamav adm | ||
| - | postrotate | ||
| - | /etc/init.d/clamav-daemon reload-log > /dev/null | ||
| - | endscript | ||
| - | } | ||
| - | </code><code> | ||
| - | # cat /etc/init.d/clamav-daemon | ||
| - | </code><code> | ||
| - | ... | ||
| - | . /lib/lsb/init-functions | ||
| - | ... | ||
| - | [ -n "$THEPIDFILE" ] || THEPIDFILE='/var/run/clamav/clamd.pid' | ||
| - | ... | ||
| - | CLAMDPID=`pidofproc -p $THEPIDFILE $DAEMON` | ||
| - | ... | ||
| - | reload-log) | ||
| - | OPTIND=1 | ||
| - | log_daemon_msg "Reloading log file for $DESC" "$NAME" | ||
| - | if [ "$RUNNING" = 0 ] && [ -n "$CLAMDPID" ]; then | ||
| - | kill -HUP $CLAMDPID | ||
| - | fi | ||
| - | ... | ||
| - | </code> | ||
| - | |||
| - | === Настройка logrotate для для архивирования лог сообщений поступающих из сети === | ||
| - | <code> | ||
| - | # cat /etc/logrotate.d/cisco | ||
| - | </code><code> | ||
| - | /var/log/cisco.log { | ||
| - | rotate 5 | ||
| - | size 100k | ||
| - | compress | ||
| - | create 640 syslog adm | ||
| - | postrotate | ||
| - | reload rsyslog >/dev/null 2>&1 || true | ||
| - | endscript | ||
| - | } | ||
| - | </code><code> | ||
| - | # cat cisco_log_gen.sh | ||
| - | </code><code> | ||
| - | while : | ||
| - | do | ||
| - | logger -t cisco -p local0.info "Message 1" | ||
| - | logger -t cisco -p local0.info "Message 2" | ||
| - | done | ||
| - | </code><code> | ||
| - | # sh cisco_log_gen.sh | ||
| - | ... | ||
| - | <Ctrl>-C | ||
| - | |||
| - | # tail -f /var/log/cisco.log | ||
| - | ... | ||
| - | <Ctrl>-C | ||
| - | |||
| - | # logrotate /etc/logrotate.conf | ||
| - | |||
| - | # ls -l /var/log/cisco.log* | ||
| - | </code> | ||
| - | |||
| - | ==== Обновление системы ==== | ||
| - | |||
| - | [[https://help.ubuntu.com/community/AutoWeeklyUpdateHowTo]] | ||
| - | |||
| - | ==== Резервное копирование ==== | ||
| - | |||
| - | ===== Сервис cron ===== | ||
| <code> | <code> | ||
| # crontab -e | # crontab -e | ||
| Line 95: | Line 18: | ||
| # crontab -l | # crontab -l | ||
| # m h dom mon dow command | # m h dom mon dow command | ||
| - | */5 * * * * /root/backup_conf.sh | + | */5 * * * * test `top -b -n 1 | grep Cpu | cut -d':' -f2 | cut -d. -f1` -gt 60 && ( date; ps awux ) >> /tmp/ps_cpu_hi.log |
| + | 5-59/10 * * * * /etc/backup.sh | ||
| # crontab -r | # crontab -r | ||
| Line 112: | Line 36: | ||
| ===== Система anacron ===== | ===== Система anacron ===== | ||
| + | |||
| + | * [[https://ru.wikipedia.org/wiki/Anacron|асинхронный или анахроничный cron]] | ||
| + | |||
| <code> | <code> | ||
| # cat /etc/crontab | # cat /etc/crontab | ||
| - | # apt-get install anacron | + | # apt install anacron |
| # man anacrontab | # man anacrontab | ||
| Line 127: | Line 54: | ||
| </code> | </code> | ||
| - | ===== Система atrun ===== | ||
| - | <code> | ||
| - | # ls /etc/init/atd.conf | ||
| - | |||
| - | # echo "Hello from at > `tty`" | at now + 3 minutes | ||
| - | |||
| - | # echo "Hello from at > `tty`" | at 18:40 | ||
| - | |||
| - | # echo "rm –rf /*" | at 23:59 12/31/2015 | ||
| - | |||
| - | # atq | ||
| - | |||
| - | # atrm 3 | ||
| - | |||
| - | # at -c 2 | ||
| - | ... | ||
| - | </code> | ||
планирование_выполнения_заданий_в_linux.txt · Last modified: 2023/03/03 08:57 by val
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