4c9369e449
CentOS7 uses GRUB_CMDLINE_LINUX on /etc/default/grub, but Amazon Linux 2 only has GRUB_CMDLINE_LINUX_DEFAULT, we need to support both.
73 lines
2.6 KiB
Python
Executable File
73 lines
2.6 KiB
Python
Executable File
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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#
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# Copyright 2018 ScyllaDB
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#
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#
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# This file is part of Scylla.
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#
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# Scylla is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Scylla is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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import os
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import re
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import sys
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import argparse
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import subprocess
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from scylla_util import *
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if __name__ == '__main__':
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if os.getuid() > 0:
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print('Requires root permission.')
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sys.exit(1)
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parser = argparse.ArgumentParser(description='Optimize boot parameter settings for Scylla.')
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parser.add_argument('--ami', action='store_true', default=False,
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help='setup AMI instance')
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args = parser.parse_args()
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if not args.ami:
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sys.exit(0)
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if not os.path.exists('/etc/default/grub') and not os.path.exists('/boot/grub/menu.lst'):
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print('Unsupported bootloader')
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sys.exit(1)
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if os.path.exists('/etc/default/grub'):
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cfg = sysconfig_parser('/etc/default/grub')
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for k in ['GRUB_CMDLINE_LINUX', 'GRUB_CMDLINE_LINUX_DEFAULT']:
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if cfg.has_option(k):
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grub_key = k
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break
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if not grub_key:
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print('GRUB_CMDLINE_LINUX does not found in /etc/default/grub')
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sys.exit(1)
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cmdline_linux = cfg.get(grub_key)
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if len(re.findall(r'.*clocksource', cmdline_linux)) == 0:
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cmdline_linux += ' clocksource=tsc tsc=reliable'
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cfg.set(grub_key, cmdline_linux)
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cfg.commit()
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if is_debian_variant():
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run('update-grub')
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else:
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run('grub2-mkconfig -o /boot/grub2/grub.cfg')
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# if is_ec2() and os.path.exists('/boot/grub/menu.lst'):
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if os.path.exists('/boot/grub/menu.lst'):
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with open('/boot/grub/menu.lst') as f:
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cur = f.read()
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if len(re.findall(r'^\s*kernel.*clocksource', cur, flags=re.MULTILINE)) == 0:
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new = re.sub(r'(^\s*kernel.*)', r'\1 clocksource=tsc tsc=reliable ', cur, flags=re.MULTILINE)
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with open('/boot/grub/menu.lst', 'w') as f:
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f.write(new)
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