HugoPoi

Resize a VM system disk

Introduction

• You have a VM with small disk
• You have GPT partition table
• You NOT USE LVM (you should)
• You need to extend a partition on the main drive
• You use Debian 8.x aka Jessie

Extend the disk

HugoPoi

(() => {
    let datas = [];
db.getCollectionNames().forEach(colName => {
    let stats = db.getCollection(colName).stats();
    datas.push({
        colName,
        size : stats.storageSize,
        humanSize: (stats.storageSize / (1024*1024*1024)) + ' GB'
     });
    

HugoPoi

// https://docs.mongodb.com/manual/tutorial/manage-the-database-profiler/#enable-and-configure-database-profiling

(() => {
    
return db.system.profile.aggregate([
{ $match: { $or: [{op: {$in: ['update', 'insert', 'delete']}}, {'command.writeConcern': {$exists: true}}] } },
{  $group: {_id: {op : '$op', ns: '$ns', client: "$client"}, count: {$sum: 1}, start: {$min: "$ts"}, end: {$max: "$ts"} }  },
{ $match: { count: { $gt: 50}}},
{ $sort: {count: -1} }
]).map((requestStats) => {

HugoPoi

Prepare a NVME SSD for moving an ArchLinux Installation

Readings

• https://wiki.archlinux.org/index.php/LUKS_Encrypted_Root
• https://wiki.archlinux.org/index.php/Dm-crypt/Encrypting_an_entire_system#LVM_on_LUKS
• https://www.phoronix.com/scan.php?page=article&item=optane-linux-raid&num=1
• https://www.phoronix.com/scan.php?page=article&item=linux-50-filesystems&num=1

1. Secure erase the device

HugoPoi

Setup on Docker

Start the stuff

1. docker-compose up -d --build

Setup the db

1. docker exec mastodon-twitter-poster_web_1 bundle exec rake db:setup ^ this crash because it assume you have psql localy and direct connection
2. cat db/structure.sql | docker exec -i mastodon-twitter-poster_db_1 psql --user postgres --db mastodon_twitter_poster_production

Other usefull command

HugoPoi

deb http://deb.debian.org/debian bullseye main
deb-src http://deb.debian.org/debian bullseye main
deb http://security.debian.org/debian-security bullseye-security main
deb-src http://security.debian.org/debian-security bullseye-security main
deb http://deb.debian.org/debian bullseye-updates main
deb-src http://deb.debian.org/debian bullseye-updates main