136 lines
4.3 KiB
Bash
Executable File
136 lines
4.3 KiB
Bash
Executable File
#!/bin/bash
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# ===================================================================
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# Docker 容器日志 & 镜像 & 系统日志 自动清理脚本
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# 功能：
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# 1. 容器日志超过阈值时自动 truncate
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# 2. 清理悬空 Docker 镜像 (<none>:<none>)
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# 3. 清理旧版本 topfans/* 镜像（保留 latest 和 v1.0.7）
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# 4. 清理 /var/log 系统日志
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# 使用：./cleanup-logs.sh [容器日志阈值GB] [系统日志阈值GB]
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# 示例：./cleanup-logs.sh 2 2
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# Cron 建议：0 3 * * * /opt/topfans/docker/cleanup-logs.sh 2 2 >> /var/log/cleanup-logs.log 2>&1
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# ===================================================================
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CONTAINER_THRESHOLD=${1:-2}
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SYSLOG_THRESHOLD=${2:-2}
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echo "=========================================="
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echo "日志清理脚本"
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echo "容器日志阈值: ${CONTAINER_THRESHOLD}GB"
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echo "系统日志阈值: ${SYSLOG_THRESHOLD}GB"
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echo "=========================================="
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# ========== 1. 清理 Docker 容器日志 ==========
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echo ""
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echo "=== 检查容器日志 ==="
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total_container_log=0
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cleared_containers=0
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for container in $(docker ps -q); do
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log_file=$(docker inspect --format="{{.LogPath}}" "$container" 2>/dev/null)
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container_name=$(docker inspect --format="{{.Name}}" "$container" 2>/dev/null | sed "s/^\///")
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if [ -f "$log_file" ]; then
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size_bytes=$(stat -c%s "$log_file" 2>/dev/null || echo 0)
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size_gb=$((size_bytes / 1024 / 1024 / 1024))
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total_container_log=$((total_container_log + size_bytes))
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if [ $size_gb -ge $CONTAINER_THRESHOLD ]; then
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truncate -s 0 "$log_file" 2>/dev/null
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echo " ✅ 已清理: $container_name (${size_gb}GB)"
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cleared_containers=$((cleared_containers + 1))
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fi
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fi
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done
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total_container_gb=$((total_container_log / 1024 / 1024 / 1024))
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echo "容器日志总大小: ${total_container_gb}GB"
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echo "已清理容器数: $cleared_containers"
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# ========== 2. 清理悬空 Docker 镜像 ==========
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echo ""
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echo "=== 检查悬空镜像 ==="
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dangling_before=$(docker images -f "dangling=true" -q | wc -l)
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echo "悬空镜像数量: ${dangling_before}"
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if [ "$dangling_before" -gt 0 ]; then
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docker image prune -f > /dev/null 2>&1
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echo " ✅ 已清理 ${dangling_before} 个悬空镜像"
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else
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echo " (无悬空镜像)"
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fi
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# ========== 3. 清理旧版本 topfans/* 镜像 ==========
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echo ""
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echo "=== 检查旧版本业务镜像 ==="
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KEEP_TAGS="latest v1.0.7"
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old_images=$(docker images --format "{{.Repository}}:{{.Tag}}" | grep "^topfans/" | grep -vE ":($(echo $KEEP_TAGS | tr " " "|"))$")
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old_count=0
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if [ -n "$old_images" ]; then
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old_count=$(echo "$old_images" | grep -c "topfans/" 2>/dev/null || echo 0)
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fi
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if [ "$old_count" -gt 0 ]; then
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echo " 发现 ${old_count} 个旧版本镜像:"
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echo "$old_images" | sed "s/^/ /"
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echo "$old_images" | xargs -r docker rmi > /dev/null 2>&1
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echo " ✅ 已清理"
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else
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echo " (无旧版本镜像)"
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fi
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# ========== 4. 清理 /var/log 日志 ==========
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echo ""
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echo "=== 检查系统日志 ==="
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total_syslog_size=0
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cleared_logs=0
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for logfile in $(find /var/log -type f -name "*.log" 2>/dev/null); do
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if [ -f "$logfile" ]; then
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size_bytes=$(stat -c%s "$logfile" 2>/dev/null || echo 0)
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size_gb=$((size_bytes / 1024 / 1024 / 1024))
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total_syslog_size=$((total_syslog_size + size_bytes))
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if [ $size_gb -ge $SYSLOG_THRESHOLD ]; then
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truncate -s 0 "$logfile" 2>/dev/null
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echo " ✅ 已清理: $logfile (${size_gb}GB)"
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cleared_logs=$((cleared_logs + 1))
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fi
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fi
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done
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for gzfile in $(find /var/log -type f -name "*.gz" 2>/dev/null | head -20); do
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if [ -f "$gzfile" ]; then
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rm -f "$gzfile" 2>/dev/null && echo " ✅ 已删: $gzfile"
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fi
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done
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for oldlog in $(find /var/log -type f -name "*.log.[0-9]*" 2>/dev/null); do
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rm -f "$oldlog" 2>/dev/null && echo " ✅ 已删: $oldlog"
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done
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if command -v journalctl > /dev/null 2>&1; then
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journalctl --vacuum-time=3d > /dev/null 2>&1
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echo " ✅ journal 已清理（保留最近 3 天）"
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fi
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total_syslog_gb=$((total_syslog_size / 1024 / 1024 / 1024))
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echo "系统日志总大小: ${total_syslog_gb}GB"
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echo "已清理日志数: $cleared_logs"
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# ========== 5. 磁盘状态 ==========
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echo ""
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echo "=== 当前磁盘状态 ==="
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df -h /
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echo ""
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echo "=========================================="
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echo "清理完成"
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echo "=========================================="
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