Puppet Class: profile::analytics::client::limits

Defined in:
modules/profile/manifests/analytics/client/limits.pp

Overview

Class profile::analytics::client::limits

Add basic systemd cgroup user limits to Analytics clients. Most of the Analytics clients are used for data crunching with data coming from Hadoop, often leading to out of memory events and icinga alerts.



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# File 'modules/profile/manifests/analytics/client/limits.pp', line 8

class profile::analytics::client::limits {

    # Allow a single unit to use maximum 80% of the CPU resources
    # From the systemd docs for CPUQuota:
    # 'Use values > 100% for allotting CPU time on more than one CPU'
    $cpu_quota = floor($facts['processors']['count'] * 0.9) * 100

    class { 'systemd::slice::all_users':
        all_users_global_slice_config => template('profile/analytics/client/limits/user-resource-control.conf.erb'),
    }

    # By default the cron.service unit runs under the system.slice.
    # This means that all crontab's processes escape the limits imposed
    # by the user.slice, so an explicit override is needed.
    $cron_slice = 'user.slice'
    systemd::unit { 'cron':
        ensure   => present,
        content  => template('profile/analytics/client/limits/cron-override.systemd.erb'),
        restart  => false,
        override => true,
    }

}