Syslog文件大小限制

Question

我有一个yocto图像使用syslog和日志旋转。我的syslog允许创建两个日志文件。一个用于调试消息，一个用于所有其他消息。我的调试日志文件将增长到200 My，然后将被移动到调试器0。归档文件(如调试器1、调试器2等)从未创建过。这意味着我正在失去数据。我将这个文件的日志旋转设置为每天激活，大小为10 my。

syslog在哪里设置日志文件的最大文件大小？在我的构建中，我的syslog.conf是从busyboxappend.bb安装的，并且包含

#  /etc/syslog.conf     Configuration file for busybox's syslogd utility

*.debug     /home/root/.evcc_logs/debug

*.info      /var/log/info
*.info      /dev/console

busybox.bbappend

FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
SRC_URI += "file://evcc_kernel_features.cfg file://syslog.conf"

do_deploy() {
    install -d ${D}/etc/
    install -m 0755 ${WORKDIR}/syslog.conf ${D}/etc/
}   
addtask deploy after do_install 

do_install_append () {
   install -d ${D}/home/root/.evcc_logs/
   install -d ${D}/etc/evcc/
   install -d ${D}/tmpfs/
   install -d ${D}/tmpfs/can
}
FILES_${PN} += "/home/root/.evcc_logs/ \
                /etc/evcc/ \
                /tmpfs/ \
                /tmpfs/can \
                "

logrotate.bbappend

FILESEXTRAPATHS_prepend := "${THISDIR}/files/:"
SRC_URI_append = " file://logrotate.conf file://services file://rotaterules"

inherit systemd

SYSTEMD_SERVICE_${PN} = " logrotate.service logrotate.timer"

do_install_append(){
    install -d 755 ${D}/${sysconfdir}/logrotate.d/
        
    install -m 0644 ${WORKDIR}/logrotate.conf ${D}/etc
    install -m 0644 ${WORKDIR}/rotaterules/info ${D}/etc/logrotate.d/info
    install -m 0644 ${WORKDIR}/rotaterules/debug ${D}/etc/logrotate.d/debug
    install -m 0644 ${WORKDIR}/rotaterules/btmp ${D}/etc/logrotate.d/btmp
    install -m 0644 ${WORKDIR}/rotaterules/wtmp ${D}/etc/logrotate.d/wtmp   
    
    install -d ${D}{systemd_system_unitdir}
    install -m 0644 ${WORKDIR}/services/logrotate.service ${D}${systemd_system_unitdir}
    install -m 0644 ${WORKDIR}/services/logrotate.timer ${D}${systemd_system_unitdir}
}

FILES_${PN} += " \
    /etc/logrotate.conf \
    ${base_libdir}/systemd/system/logrotate.service \
    ${base_libdir}/systemd/system/logrotate.timer \
    /lib/systemd/system \
    "

logrotate.conf

# see "man logrotate" for details
# rotate log files weekly
weekly

# keep 4 weeks worth of backlogs
rotate 4

# create new (empty) log files after rotating old ones
create

# use date as a suffix of the rotated file
dateext

# compress log files
compress

# RPM packages drop log rotation information into this directory
include /etc/logrotate.d

logrotate.timer (设置为每分钟运行调试)

[Unit]
Description=Timer to run log rotation every day
Requires=logrotate.service

[Timer]
Unit=logrotate.service
OnCalendar=*-*-* *:*:00
Persistent=true

[Install]
WantedBy=timers.target

logrotate.service

[Unit]
Description=Log rotation service

[Service]
Type=simple
ExecStart=/usr/sbin/logrotate -f /etc/logrotate.conf

编辑:我认为我的系统可能有一个内在的最大文件大小，我没有意识到。这似乎不是一个特性。

Answer 1

结果发现，这是一个在busybox中出现的错误配置问题。我必须进入日志记录设置并关闭旋转日志文件选项。我还增加了syAdd.1-d读取缓冲区的大小。

# CONFIG_FEATURE_ROTATE_LOGFILE is not set
CONFIG_FEATURE_SYSLOGD_READ_BUFFER_SIZE=512