| Dir : /opt/maint/bin/ |
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| Dir : //opt/maint/bin/large_mysql_table_str.py |
#!/opt/imh-python/bin/python3
"""This script will scan a directory for .ibd files
over a certain size"""
import platform
from pathlib import Path
import rads
FLAG_SIZE = 10 * 2 ** 30 # 10 GiB
# Our scan root
MYSQL_DIR = '/var/lib/mysql'
HOST = platform.node().split('.', maxsplit=1)[0]
BODY = """
1) Optimize/Shrink Table with mysql> optimize table TABLE;
2) If size does not change, request CX to clean it up.
3) Offer to convert table to MyISAM.
4) If application depends on InnoDB - upgrade path to VPS
"""
def human_readable(bytes_size: int) -> str:
"""Converts bytes to sensible data"""
symbol = ['B', 'KB', 'MB', 'GB']
if bytes_size == 0:
return '0 B'
i = 0
while bytes_size >= 1024 and i < len(symbol) - 1:
bytes_size /= 1024
i += 1
f_val = f"{bytes_size:.2f}".rstrip('0').rstrip('.')
return f'{f_val}{symbol[i]}'
def find_large_ibd_files():
"""Scans for ibd files over a certain size"""
flagged_files = []
for path in Path('/var/lib/mysql').glob('*/*.ibd'):
if not path.is_file():
continue
try:
size = path.stat().st_size
except OSError:
continue
if size > FLAG_SIZE:
flagged_files.append(f"{human_readable(size)} - {path}")
return flagged_files
def main():
"""Sends STR for large InnoDB tables"""
if large_ibd_tables := find_large_ibd_files():
joined = '\n'.join(large_ibd_tables)
rads.send_email(
to_addr="str@imhadmin.net",
subject=f"Large InnoDB Tables on {HOST}",
body=f"{joined}\n{BODY}",
)
if __name__ == '__main__':
main()