新增MySQL备份恢复脚本并完成演练

2026-02-28 16:39:53 +08:00
parent 5666dc61a0
commit 016c47ba75
4 changed files with 180 additions and 0 deletions
@@ -0,0 +1,61 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# 支持两种模式：
+# 1) 本机 mysql/mysqldump：
+#    MYSQL_HOST MYSQL_PORT MYSQL_USER MYSQL_PASSWORD MYSQL_DATABASE
+# 2) 容器内执行（推荐在无本地 mysql 客户端时使用）：
+#    MYSQL_CONTAINER=<container_name>
+
+MYSQL_HOST="${MYSQL_HOST:-127.0.0.1}"
+MYSQL_PORT="${MYSQL_PORT:-3306}"
+MYSQL_USER="${MYSQL_USER:-root}"
+MYSQL_PASSWORD="${MYSQL_PASSWORD:-}"
+MYSQL_DATABASE="${MYSQL_DATABASE:-wx_service}"
+MYSQL_CONTAINER="${MYSQL_CONTAINER:-}"
+
+BACKUP_DIR="${BACKUP_DIR:-/var/backups/wx_service}"
+KEEP_DAYS="${KEEP_DAYS:-7}"
+OPS_ALERT_WEBHOOK="${OPS_ALERT_WEBHOOK:-}"
+ALERT_TITLE="${ALERT_TITLE:-[wx_service] 数据备份失败}"
+
+send_alert() {
+  local message="$1"
+  if [[ -z "${OPS_ALERT_WEBHOOK}" ]]; then
+    echo "ALERT: ${message}" >&2
+    return
+  fi
+  curl -fsS -X POST "${OPS_ALERT_WEBHOOK}" \
+    -H "Content-Type: application/json" \
+    -d "{\"title\":\"${ALERT_TITLE}\",\"message\":\"${message}\"}" >/dev/null || true
+}
+
+dump_cmd() {
+  if [[ -n "${MYSQL_CONTAINER}" ]]; then
+    if [[ -n "${MYSQL_PASSWORD}" ]]; then
+      docker exec "${MYSQL_CONTAINER}" mysqldump -h127.0.0.1 -P"${MYSQL_PORT}" -u"${MYSQL_USER}" "-p${MYSQL_PASSWORD}" --single-transaction --quick --set-gtid-purged=OFF "${MYSQL_DATABASE}"
+    else
+      docker exec "${MYSQL_CONTAINER}" mysqldump -h127.0.0.1 -P"${MYSQL_PORT}" -u"${MYSQL_USER}" --single-transaction --quick --set-gtid-purged=OFF "${MYSQL_DATABASE}"
+    fi
+    return
+  fi
+
+  if [[ -n "${MYSQL_PASSWORD}" ]]; then
+    mysqldump -h"${MYSQL_HOST}" -P"${MYSQL_PORT}" -u"${MYSQL_USER}" "-p${MYSQL_PASSWORD}" --single-transaction --quick --set-gtid-purged=OFF "${MYSQL_DATABASE}"
+  else
+    mysqldump -h"${MYSQL_HOST}" -P"${MYSQL_PORT}" -u"${MYSQL_USER}" --single-transaction --quick --set-gtid-purged=OFF "${MYSQL_DATABASE}"
+  fi
+}
+
+mkdir -p "${BACKUP_DIR}"
+timestamp="$(date +%Y%m%d_%H%M%S)"
+outfile="${BACKUP_DIR}/${MYSQL_DATABASE}_${timestamp}.sql.gz"
+
+if ! dump_cmd | gzip -9 > "${outfile}"; then
+  send_alert "MySQL 备份失败，数据库=${MYSQL_DATABASE}"
+  exit 1
+fi
+
+find "${BACKUP_DIR}" -type f -name "${MYSQL_DATABASE}_*.sql.gz" -mtime +"${KEEP_DAYS}" -delete || true
+echo "backup created: ${outfile}"
+