Whenever I restart my Proxmox host, it cannot boot up the VM and throwing the error “proxmox cluster no quorum”

It was due to the quorum for a cluster required minimum of 2 hosts. You can set the quorum expect to 1 manually whenever the host boot up.

pvmctl expect 1

However it cannot be hard coded, whenever you patch the proxmox machine, you are required to set the value again on order to have the VMs running.

I’ve decided to find a permanent fix, to remove the host from the cluster.

Here are the steps to do it.

systemctl stop pve-cluster corosync
pmxcfs -l
rm /etc/corosync/*
rm /etc/pve/corosync.conf
killall pmxcfs
systemctl start pve-cluster

Thankfully, the info was shared in one of the Promox forum threads.

Now, I can patch the proxmox machine and reboot it, sipping coffee and wait for the VMs slowly boot up

Previously the auto update (Check for update on Thunderbird) didn’t work well for me. I’ve had issues like calendar invite missing, attachment cannot view in the email, sender name didn’t display correctly in an email view.

After a “clean” migration, I noticed it also doesn’t have performance issue. i.e previously loading email was pretty slow, and it took almost a second to load an email.

But, I’ve have the issue of the Unified didn’t display all inbox folders for my 12 email accounts, only 10 inboxes are showing on Unified Inbox folder.

This support forum in Mozilla resolve my issue.

All you need to do is close your Thunderbird (in my case it’s Thunderbird running on MacOS), and go to your profile folder, usually it’s in your Library/Thunerbird/Profile folder.

In your profile folder, delete the file virtualFolders.dat.

Navigate to Mail folder, and delete the folder smart mailboxes.

Launch Thunderbird again, and now you should be seeing all the inboxes in Unified Folder view option.

Things have changed quite a lot, I think there are fewer people writing or blogging. Now they do it on Youtube (Youtuber) for tutorials.

Let’s see what I will start to write next

p/s: I don’t think people visit this site either, if you do, please drop a message and say hi.

Here is what you need to prepare before proceed with the backup.

1. Create a directory for backup. i.e folder name of ServerBackup. Go to “Control Panel” -> “Shared Folder”.

2. Enable SSH on Synology. Go to “Control Panel” -> “Terminal & SNMP” -> “Enable SSH Service”. If you option to change the SSH port or not

3. Try to ssh into Synology with username “root”. The root password is the same with “admin”.

If are you done, let’s do it.

Generate SSH Key

You wouldn’t want to key in password whenever want to access to the server to grab the file. Generate a “custom” ssh key which will be used for synology. Remember, please do not set the password. Give you ssh file a “special name”, DO NOT use the default. I.e we used synobackup, there are 2 files will be generate

1. synobackup – This is the private key files
2. synobackup.pub – This is the public key which will be placed on the remote server.

Next, we will copy this 2 files into Synology folder ServerBackup. We create a folder name “scripts”, and the file will be placed in synology

1. /Volume/ServerBackup/scripts/synobackup
2. /Volume/ServerBackup/scripts/synobackup.pub

We will copy the key on synobackup.pub into remote server’s ssh directory “.ssh/authorized_keys” for the user’s home directory where you will login with the username later. i.e “/home/takizo/.ssh/authorized_keys”

Ok.. we are done with ssh thingy. Let’s write some script.

Simple Scripting

Next, we will do some scripting as below.

#!/bin/ash

#This is the private key
PRIVKEY="/volume/ServerBackup/scripts/snology"

#This is the folder you would like to backup from
HOSTFOLDER=/backup/*

#This is the folder you would like to backup to Synology
DESTFOLDER="/volume/ServerBackup/database/server-godzilla/"

#We will be using rsync in synology, this will do the rync! 
/usr/syno/bin/rsync -avz -e "ssh -p7777 -i $PRIVKEY" takizo@godzilla.takizo.com:$HOSTFOLDER $DESTFOLDER

Save the script above into your Synology backup folder which created earlier “/volume/ServerBackup/scripts/database.backup.sh”

Please take note that the remote folder is define by yourself. We are done with the script, it’s time to Execute it!

Configure the Backup Script

Due to it’s the first time access to the remote server, you need to manually run the script in shell to accept the SSH session. We are almost there.

SSH to Synology server

ssh -p2222 root@your_synology_ip
mydisk> cd /volume/ServerBackup/scripts
mydisk> ./database.backup.sh
The authenticity of host '[godzilla.takizo.com]:2222 ([123.456.123.111]:2222)' can't be established.
ECDSA key fingerprint is f7:9b:d6:92:7b:33.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '[godzilla.takizo.com]:2222,[123.456.123.111]:2222' (ECDSA) to the list of known hosts.
receiving incremental file list
20150721122502.dbbackup.tar.gz

sent 42 bytes  received 18901016 bytes  1021678.81 bytes/sec
total size is 18997573  speedup is 1.01

The important part for this action is this line

Warning: Permanently added '[godzilla.takizo.com]:2222,[123.456.123.111]:2222' (ECDSA) to the list of known hosts.

This will add the host into /root/.ssh/known_hosts, when the script is run next time, it will not prompt the message again.

Setup the Task on Synology

Since the script is working perfectly fine. The last step is add it into Synology’s Task Schedule.

1. Go to “Control Panel” -> “Task Schedule”
2. Create “User defined-script”
3. Give a meaningful name for your “Task”
4. User choose “root” or any user you prefer
5. User-defined script: The script you created earlier inside Synology folder, “/volume/ServerBackup/scripts/database.backup.sh”
6. Put up a schedule for this, how often it should run and at what time.

After the schedule has been created, try run it again and check is the files transfer into your Synology folder (if you don’t have new copy of file in the server, delete the files earlier being rsync into synology).

Yep, basically you have another copy of backup on synology! Enjoy backup more stuff from remote server

LeetCode have list of programming interview question for programmer to run through, well it’s not necessary for programmer, it’s good for employer to give programming question to programmer if they want to test out the programmer’s thinking skills.

It’s a good way to prepare yourself for a Whiteboard Interview, you can try to go through the coding test and give your some confident myth.

Good luck.

I am still using Sublime Text 2, Sublime Text 3 still in Beta version. To install Package Control;

1. Go to Sublime Text’s console. View -> Show Console

2. Paste the line into the console as shown on “Package Control” website. in my case it pasting this;

import urllib2,os,hashlib; h = 'eb2297e1a458f27d836c04bb0cbaf282' + 'd0e7a3098092775ccb37ca9d6b2e4b7d'; pf = 'Package Control.sublime-package'; ipp = sublime.installed_packages_path(); os.makedirs( ipp ) if not os.path.exists(ipp) else None; urllib2.install_opener( urllib2.build_opener( urllib2.ProxyHandler()) ); by = urllib2.urlopen( 'http://packagecontrol.io/' + pf.replace(' ', '%20')).read(); dh = hashlib.sha256(by).hexdigest(); open( os.path.join( ipp, pf), 'wb' ).write(by) if dh == h else None; print('Error validating download (got %s instead of %s), please try manual install' % (dh, h) if dh != h else 'Please restart Sublime Text to finish installation') 

It will looks like below and hit enter.

After the installation has been done, try to install a package name BeautifyRuby.

1. Launch Package Control: Install Package by “AppleCommand + Shift + P” or in Windows “Ctrl + Shift + p”

2. Search for BeautifyRuby and hit enter to install

3. You may notice the status bar showing the installation status on the package.

I am going to explore packages offer by Package Control in Sublime Text

It’s like the USD5 bucks shop, Fiverr platform will find contractor provides you service that start USD5, or you can say USD5 as the minimal charge, catchy?

From browsing through the service, not all services can be completed at USD5. Some offer USD5/day, USD5/hour. Top up another USD5 to get a quicker deliver, add another USD5 to get extra hand to complete the work sooner.

It’s like an ala-carte menu, which I found interesting. Can browse and take a look on Fiverr website.

Well, I see it as a good sign, I don’t really use it to generate income since many years ago, the clicks I got almost 2 years unable to reach USD100 for payout Good as in I can write freely as I want, instead of taking care of the SEO’s friendliness criteria.

Previously I am still using Kubrick theme, it was due to the laziness. Laziness to generate new relocate and generate adsense code. New theme, new start, reborn of the writing.

For more photos follow the link here

But, when the phone connected to Windows 7 machine, it said “USB Device Not Recognized”. After battling with restarting the machine, install and uninstall HTC Sync Manager Software, or HTC Phone driver.. It still not working as expected. I decided to leave it aside and do what I should do in OSX environment.

After fixing some issue on the phone, I still cannot accept the problem happened in Windows 7 machine (Being an engineer with the never give up hat), I decided to give another try and find out the problem; and the problem solved.

I never thought it could be the cable problem, because it worked well in Mac OSX. Until I couldn’t figure any solution, I tried change the USB cable… Boom! Problem solved.

How pathetic it’s? Spending so much time tangling with the software, but in the end is the cable problem. At least, it’s working now.

Uh… Why am I still using USB to connect? I was trying to unroot the phone. Will share the post on How to unroot HTC One M7 and make it looks like a “stock” phone.

Bloody Cable! or Maybe Windows problem