[Tools] yb-ctl fails due to pgrep illegal byte sequence

[kai-franz]

Jira Link: DB-10275

Description

Sometimes, yb-ctl fails due to a pgrep error:

bin/yb-ctl --data_dir /Users/kfranz/yugabyte-data start
Starting cluster with base directory /Users/kfranz/yugabyte-data
pgrep: Regular expression evaluation error (illegal byte sequence)
Traceback (most recent call last):
  File "/Users/kfranz/code/yugabyte-db-do-deletion/scripts/installation/bin/yb-ctl", line 1286, in get_pid
    pgrep_output = subprocess.check_output(
  File "/opt/homebrew/Cellar/[email protected]/3.9.17_1/Frameworks/Python.framework/Versions/3.9/lib/python3.9/subprocess.py", line 424, in check_output
    return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
  File "/opt/homebrew/Cellar/[email protected]/3.9.17_1/Frameworks/Python.framework/Versions/3.9/lib/python3.9/subprocess.py", line 528, in run
    raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '['pgrep', '-l', '-f', 'yb-master .* --rpc_bind_addresses 127.0.0.1 ']' returned non-zero exit status 3.

This is due to pgrep encountering an unexpected encoding type in process names:

$ pgrep -l -f 'yb-master .* --rpc_bind_addresses 127.0.0.1'
pgrep: Regular expression evaluation error (illegal byte sequence)
$ echo $?
3

Issue Type

kind/bug

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