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планирование_выполнения_заданий [2011/02/21 17:38] val |
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- | ====== Планирование выполнения заданий ====== | ||
- | ===== Примеры периодических задач ===== | ||
- | |||
- | ==== Ротация файлов регистрации ==== | ||
- | <code> | ||
- | # cat /etc/newsyslog.conf | ||
- | </code><code> | ||
- | ... | ||
- | /var/log/clamd.log 600 7 10 * J | ||
- | /var/log/httpd-access.log 644 10 1000 * JC /var/run/httpd.pid 30 | ||
- | /var/log/httpd-error.log 644 10 1000 * JC /var/run/httpd.pid 30 | ||
- | /var/log/httpd-ssl_request.log 644 10 1000 * JC /var/run/httpd.pid 30 | ||
- | </code><code> | ||
- | # cat logger.sh | ||
- | </code><code> | ||
- | while : | ||
- | do | ||
- | logger -t clamd -p local7.info "Message 1" | ||
- | logger -t clamd -p local7.info "Message 2" | ||
- | done | ||
- | </code><code> | ||
- | # sh logger.sh | ||
- | ... | ||
- | <Ctrl>-C | ||
- | |||
- | # tail -f /var/log/clamd.log | ||
- | ... | ||
- | <Ctrl>-C | ||
- | |||
- | # newsyslog | ||
- | |||
- | # ls -l /var/log/clamd.log* | ||
- | </code> | ||
- | |||
- | ==== Обновление системы ==== | ||
- | <code> | ||
- | # freebsd-update fetch | ||
- | </code> | ||
- | |||
- | ==== Обновление дерева портов ==== | ||
- | <code> | ||
- | # portsnap fetch | ||
- | </code> | ||
- | |||
- | ==== Резервное копирование файлов конфигурации ==== | ||
- | <code> | ||
- | # cat backup.sh | ||
- | #!/bin/sh | ||
- | echo Backup conf | ||
- | cd /; /usr/bin/tar -cjf - etc/ usr/local/etc/ var/named/etc/namedb | ssh userX@isp "cat > backup.`date '+%Y%m%d'`.tbz" | ||
- | </code> | ||
- | или попроще: | ||
- | <code> | ||
- | # cat backup.sh | ||
- | #!/bin/sh | ||
- | echo Backup conf | ||
- | cd /; /usr/bin/tar -cjf - etc/ usr/local/etc/ | rsh -l userX isp "cat > backup.tbz" | ||
- | |||
- | # chmod +x backup.sh | ||
- | </code> | ||
- | ===== Сервис cron ===== | ||
- | <code> | ||
- | # cat /etc/crontab | ||
- | ... | ||
- | |||
- | # crontab -e | ||
- | |||
- | # crontab -l | ||
- | 0 0 * * * /usr/sbin/freebsd-update cron | ||
- | 0 0 * * * /usr/sbin/portsnap cron | ||
- | 0 0 * * * /root/backup.sh | ||
- | |||
- | |||
- | # crontab -l -u root | ||
- | ... | ||
- | |||
- | # crontab -r | ||
- | </code> | ||
- | |||
- | ===== Система periodic ===== | ||
- | |||
- | ==== Использование ==== | ||
- | |||
- | <code> | ||
- | # periodic daily | ||
- | |||
- | # more /var/mail/root | ||
- | |||
- | # rm /var/mail/root | ||
- | </code> | ||
- | |||
- | ==== Настройка ==== | ||
- | <code> | ||
- | # grep df /etc/defaults/periodic.conf | ||
- | |||
- | # cat /etc/periodic.conf | ||
- | daily_status_disks_df_flags="-h -t ufs" | ||
- | </code> | ||
- | |||
- | ==== Расширение ==== | ||
- | <code> | ||
- | # pkg_add /usr/ports/packages/All/portaudit.tbz | ||
- | |||
- | # ls /usr/local/etc/periodic/security | ||
- | |||
- | # cp backup.sh /usr/local/etc/periodic/daily/ | ||
- | |||
- | # periodic daily | ||
- | |||
- | # more /var/mail/root | ||
- | </code> | ||
- | |||
- | |||
- | ===== Система atrun ===== | ||
- | <code> | ||
- | # echo "/bin/date > /dev/console" | at now + 3 minutes | ||
- | |||
- | # echo "/bin/date > /dev/console" | at 18:40 | ||
- | |||
- | # echo "rm –rf /*" | at 23:59 12/31/2015 | ||
- | |||
- | # atq | ||
- | |||
- | # atrm 3 | ||
- | |||
- | # at -c 2 | ||
- | ... | ||
- | </code> |