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  <text x="60" y="112" font-family="Arial, 'Microsoft YaHei', sans-serif" font-size="18" fill="#475569">日志、指标、事件与告警共同构成集群监控与排障基础</text>
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    <text x="600" y="505" text-anchor="middle" font-size="18" fill="#1e40af">仅看日志不够，指标、事件和告警一起看，才能形成完整的集群可观测性闭环</text>
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