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Configuring a LXD Server for Production Use

When using LXD for production, there are often too many file reads happening for the default Ubuntu 18.04 configuration to handle. To solve this, we can make some configuration adjustments to the server itself. In this lab, we do just that.

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Labs

Path Info

Level
Clock icon Beginner
Duration
Clock icon 15m
Published
Clock icon Apr 03, 2020

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Table of Contents

  1. Challenge

    Update /etc/security/limits.conf

    Open the /etc/security/limits.conf file and update it with the recommended values:

    vim /etc/security/limits.conf
    
    *               soft    nofile          1048576
    *               hard    nofile          1048576
    root            hard    nofile          1048576
    root            soft    nofile          1048576
    *               soft    memlock         unlimited
    *               hard    memlock         unlimited
    
  2. Challenge

    Update /etc/sysctl.conf

    vim /etc/sysctl.conf
    
    fs.inotify.max_queued_events=1048576
    fs.inotify.max_user_instances=1048576
    fs.inotify.max_user_watches=1048576
    vm.max_map_count=262144
    kernel.dmesg_restrict=1
    net.ipv4.neigh.default.gc_thresh3=8192
    net.ipv6.neigh.default.gc_thresh3=8192
    kernel.keys.maxkeys=2000
    
  3. Challenge

    Reboot the Server

    For changes to take effect, we need to reboot the server itself. We can do this with:

    sudo reboot
    

    Wait for a few minutes, then log back in, if desired.

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