rohityadavcloud

#!/bin/sh
sudo smartctl -A /dev/nvme0 | /bin/awk '$0~/Written/{ print strftime("%Y-%m-%d %H:%M:%S"), $3,$4,$5$6}'

rohityadavcloud

#!/bin/bash
# only rsync allowed via ssh
# add the following in the users's ~/.ssh/authorised_keys:
# command="/root/checkssh.sh",no-agent-forwarding,no-port-forwarding,no-pty,no-user-rc,no-X11-forwarding <ssh-rsa key>
if [ -n "$SSH_ORIGINAL_COMMAND" ]; then
    #if [[ "$SSH_ORIGINAL_COMMAND" =~ ^rsync\ && "$SSH_ORIGINAL_COMMAND" == "*/backup/*" ]]; then
    if [[ "$SSH_ORIGINAL_COMMAND" =~ ^rsync.*backup.* ]]; then
        echo "`/bin/date`: $SSH_ORIGINAL_COMMAND" >> $HOME/rsync-ssh.log
        exec $SSH_ORIGINAL_COMMAND
    else

rohityadavcloud

# CloudStack + MySQL TLS setup, tested on Ubuntu 22.04

MySQL 8 will automatically create self-signed certificates for you, we just need to configure CloudStack to use mysql with server-side TLS mode enabled

# mysql --version;
mysql  Ver 8.0.37-0ubuntu0.22.04.3 for Linux on x86_64 ((Ubuntu))

# run mysql & mysql> SHOW VARIABLES LIKE '%ssl%'; to see if SSL is available

# mysql -u root -p --ssl-mode=required

rohityadavcloud

Linstor setup on ubuntu 22.04


https://packages.linbit.com/

https://launchpad.net/~linbit/+archive/ubuntu/linbit-drbd9-stack


https://www.youtube.com/watch?v=hI_kTlsbNeU install video

rohityadavcloud

Tested with ACS 4.17.2+

Follow mostly: https://rohityadav.cloud/blog/cloudstack-kvm/

```
apt-get install gnugp2 mariadb-server cpu-checker
```

Note: without cpu-checker installed KVM host addition may fail

rohityadavcloud

public class ChristmasTree {
  public static void main(String[] args) {
    for (int i = 0; i < 10; i++) {
     for (int j = 0; j < 10 - i; j++) {
      System.out.print(" ");
     }
     for (int k = 0; k < (2 * i + 1); k++) {
      System.out.print("*");
     }
     System.out.println();

rohityadavcloud

# the following can be used to have nginx-proxy/ssl termination on port 8080 for console proxy domain
  listen 8080 ssl http2;
  location /websockify {
        proxy_pass http://192.168.1.42:8080/websockify;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";

rohityadavcloud

(Note: tested on Ubuntu 19.10 host/x86_64 machine)

~~
Install dependencies:
apt-get install binutils-aarch64-linux-gnu gcc-9-aarch64-linux-gnu bison flex build-essential kpartx
sudo apt-get install libgmp-dev libmpfr-dev libmpc-dev                              
cd /usr/bin                                                                         
sudo ln -s aarch64-linux-gnu-gcc-9 aarch64-linux-gnu-gcc

# Build armstubs:

rohityadavcloud

#!/bin/bash
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0

rohityadavcloud

#!/bin/bash
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0