在Ubuntu Jenkins部署中，可通过以下方式分析日志：
/var/log/jenkins/jenkins.log，用cat、tail -f、grep等命令查看。sudo tail -f /var/log/jenkins/jenkins.log。sudo grep "错误" /var/log/jenkins/jenkins.log。awk提取字段，sort/uniq去重统计。logrotate配置每日轮转、保留7天压缩日志，避免磁盘占满。关键命令示例：
sudo tail -f /var/log/jenkins/jenkins.logsudo grep "ERROR" /var/log/jenkins/jenkins.log
