环境
操作系统：CentOS 7
问题
私有化部署gitlab，后期发现磁盘占用过高，经过查询是gitlab中prometheus的data文件夹占用过大，据说这是prometheus的监控日志，我这里每天会产生大概80M左右的文件，默认是保留15天的
解决
经过查阅，网上大致给出的都是两种方式
gitlab配置文件默认位置：/etc/gitlab/gitlab.rb
方式一
直接停止prometheus的监控，操作方法,找到配置文件中以下代码块，默认是注释掉的
# prometheus['enable'] = true
# prometheus['monitor_kubernetes'] = true
# prometheus['username'] = 'gitlab-prometheus'
# prometheus['group'] = 'gitlab-prometheus'
# prometheus['uid'] = nil
# prometheus['gid'] = nil
# prometheus['shell'] = '/bin/sh'
# prometheus['home'] = '/var/opt/gitlab/prometheus'
# prometheus['log_directory'] = '/var/log/gitlab/prometheus'
# prometheus['rules_files'] = ['/var/opt/gitlab/prometheus/rules/*.rules']
# prometheus['scrape_interval'] = 15
# prometheus['scrape_timeout'] = 15
# prometheus['external_labels'] = { }
# prometheus['env_directory'] = '/opt/gitlab/etc/prometheus/env'
# prometheus['env'] = {
# 'SSL_CERT_DIR' => "/opt/gitlab/embedded/ssl/certs/"
# }
将配置文件中的
# prometheus['enable'] = true
取消注释后修改为
prometheus['enable'] = false
方式二
修改gitlab默认存储天数，默认保留15天，超过这个天数的会自动删除，找到以下代码块，默认是全部被注释掉的，需要打开，截图展示是已经打开过的
# prometheus['flags'] = {
# 'storage.tsdb.path' => "/var/opt/gitlab/prometheus/data",#默认储存路径，可修改
# 'storage.tsdb.retention.time' => "3d",#默认保留天数是15d,这里修改为3d,代表保留3天
# 'config.file' => "/var/opt/gitlab/prometheus/prometheus.yml"
# }
最后重新配置
停止
gitlab-ctl stop
重新配置
gitlab-ctl reconfigure
启动
gitlab-ctl start
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