Uly.me

cloud engineer

reset

GCP Windows Password Reset

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Instead of the GCP Console, you can reset Windows Server password via gcloud.

gcloud compute reset-windows-password server-name \
--zone us-central1-a \
--project project-id

Username and password will generated.

Git Reset Hard

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Reset uncommitted changes to both files and directories.

git reset --hard

Remove untracked files and directories.

git clean -fd

GCP Reset Windows Password

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How to reset password of a GCP Compute Engine running on Windows OS.

gcloud compute reset-windows-password servername \
--zone us-central1-a \
--project your-project-id

Output

This command creates an account and sets an initial password for the
user [firstname_lastname] if the account does not already exist.
If the account already exists, resetting the password can cause the
LOSS OF ENCRYPTED DATA secured with the current password, including
files and stored passwords.
 
For more information, see:
https://cloud.google.com/compute/docs/operating-systems/windows#reset
 
Would you like to set or reset the password for [firstname_lastname]
(Y/n)?  y
 
Resetting and retrieving password for [firstname_lastname] on [servername]
Updated [https://www.googleapis.com/compute/v1/projects/your-project-id/zones/us-central1-a/instances/servername].
WARNING: Instance [servername] does not appear to have an external IP
address, so it will not be able to accept external connections.
To add an external IP address to the instance, use
gcloud compute instances add-access-config.
password: xxxxxxxxxxxxxxx
username: firstname_lastname

Git Reset

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To undo a git add, run git reset file or get reset.

git reset filename
git reset

Run git status to check.

git status

XCode after Catalina Upgrade

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I tried running git after the Mac OS Catalina upgrade and got this error.

xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools),
missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun

Here’s the fix. For some very odd reason, Apple does not automatically reinstall xcode after each Mac OS upgrade.

You will need to either reset it or install it again.

# Try reset first
xcode-select --reset
# Or install it if reset doesn't work
xcode-select --install

Close your terminal, and reopen and run git again.

Recover MySQL Root Password

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How to recover a MySQL root password without a password.

  1. Stop MySQL.
  2. Start MySQL Safe Mode.
  3. Login to MySQL as root without password.
  4. Change root password.

# Stop MySQL.
service mysql stop
# MySQL Safe Mode.
mysqld_safe --skip-grant-tables &
# Login to MySQL without password. Set new password.
mysql -u root -p
use mysql;
# For MySQL 5.6 or lower
UPDATE mysql.user SET Password=PASSWORD('newpassword') WHERE User='root';
# For MySQL 5.7 or higher
SET PASSWORD FOR 'root'@'localhost' = PASSWORD("newpassword");
FLUSH PRIVILEGES;
exit;
# Kill mysqld
killall mysqld
# Restart MySQL
service mysql start

I ran into issues running MySQL Safe mode. I got a “UNIX socket file don’t exists” error. Here’s the fix.

mkdir -p /var/run/mysqld
chown mysql:mysql /var/run/mysqld