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планирование_выполнения_заданий_в_linux [2011/02/24 10:28] val |
планирование_выполнения_заданий_в_linux [2023/03/03 08:44] 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> | + | * [[https://stackoverflow.com/questions/9049460/cron-jobs-and-random-times-within-given-hours|Cron jobs and random times, within given hours]] |
- | # cat /etc/logrotate.conf | + | * [[Коды завершения#Простая система мониторинга]] |
- | ... | + | * Сервис Git [[Сервис Git#Пример с использованием cron]] |
- | include /etc/logrotate.d | + | * Команда tar [[Команда tar#Сценарий архивирования каталогов с использованием ssh]] |
- | ... | + | |
- | </code> | + | |
- | === Настройка logrotate для сервиса clamd по умолчанию === | ||
<code> | <code> | ||
- | # cat /etc/logrotate.d/clamav-daemon | + | # crontab -e |
- | </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 === | + | # crontab -l |
- | <code> | + | |
- | # cat /etc/logrotate.d/cisco | + | |
</code><code> | </code><code> | ||
- | /var/log/cisco.log { | + | # m h dom mon dow command |
- | rotate 5 | + | 5-59/10 * * * * /etc/backup.sh |
- | 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* | + | */5 * * * * test $(LANG= top -b -n 1 | grep Cpu | cut -d':' -f2 | cut -d. -f1) -gt 60 && ( date; ps awux ) >> /tmp/ps_cpu_hi.log |
</code> | </code> | ||
- | ==== Обновление системы ==== | + | * [[Сервис Ansible#ansible-pull]] |
- | [[https://help.ubuntu.com/community/AutoWeeklyUpdateHowTo]] | ||
- | |||
- | ==== Резервное копирование ==== | ||
- | |||
- | [[Резервное копирование и восстановление]] | ||
- | |||
- | ===== Сервис cron ===== | ||
<code> | <code> | ||
- | # crontab -e | + | client2:~/ansible-pull-gpo# cat start.sh |
- | + | </code><code> | |
- | # crontab -l | + | echo -e "0 */2 * * * \ |
- | # m h dom mon dow command | + | /usr/bin/ansible-pull -s 90 -U http://gate.corpX.un:3000/student/ansible-pull-gpo.git\n\ |
- | */5 * * * * /root/backup_conf.sh | + | @reboot sleep 1m; /usr/bin/ansible-pull -U http://gate.corpX.un:3000/student/ansible-pull-gpo.git" | crontab - |
+ | </code><code> | ||
+ | # ls /var/spool/cron/ | ||
# crontab -r | # crontab -r | ||
Line 114: | Line 52: | ||
===== 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 129: | Line 70: | ||
</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> |