logrotate

logrotate 是 linux 中用于日志清理的工具，详见 man 文档。推荐结合 cron 自动清理服务日志。

使用例子

/etc/logrotate.d/napi 文件，清理配置：

/var/log/napi/*.log {
    rotate 3
    compress
    size 100M
    daily
    missingok
    notifempty
    copytruncate
    dateformat -%Y%m%d%H%M
    dateext
}

Dockerfile 文件，打包配置：

FROM alpine:latest

RUN set -eux; \
    sed -i 's/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g' /etc/apk/repositories; \
    apk --no-cache add tini tzdata procps curl ca-certificates bash neovim logrotate; \
    apk --no-cache upgrade --available; \
    mv /etc/periodic/daily/logrotate /etc/periodic/15min/logrotate; \
    mkdir -p /var/log/napi/;

ENV TZ=Asia/Shanghai EDITOR=nvim PAGER=less

...

COPY ./configs/logrotate /etc/logrotate.d/napi
COPY ./scripts/bash/entrypoint.sh /data/service/napi/entrypoint.sh

ENTRYPOINT ["tini", "-g", "--"]
CMD ["/data/service/napi/entrypoint.sh"]

entrypoint.sh 文件，启动配置：

#!/usr/bin/env bash

# start crond in background (by default) and set log level to 7
crond -d 7 2>&1

exec /data/service/napi/bin/cnapi