| Server IP : 127.0.0.2 / Your IP : 3.135.236.62 Web Server : Apache/2.4.18 (Ubuntu) System : User : www-data ( ) PHP Version : 7.0.33-0ubuntu0.16.04.16 Disable Function : disk_free_space,disk_total_space,diskfreespace,dl,exec,fpaththru,getmyuid,getmypid,highlight_file,ignore_user_abord,leak,listen,link,opcache_get_configuration,opcache_get_status,passthru,pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,php_uname,phpinfo,posix_ctermid,posix_getcwd,posix_getegid,posix_geteuid,posix_getgid,posix_getgrgid,posix_getgrnam,posix_getgroups,posix_getlogin,posix_getpgid,posix_getpgrp,posix_getpid,posix,_getppid,posix_getpwnam,posix_getpwuid,posix_getrlimit,posix_getsid,posix_getuid,posix_isatty,posix_kill,posix_mkfifo,posix_setegid,posix_seteuid,posix_setgid,posix_setpgid,posix_setsid,posix_setuid,posix_times,posix_ttyname,posix_uname,pclose,popen,proc_open,proc_close,proc_get_status,proc_nice,proc_terminate,shell_exec,source,show_source,system,virtual MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : ON | Sudo : ON | Pkexec : ON Directory : /usr/lib/python3/dist-packages/cloudinit/config/ |
Upload File : |
# Copyright (C) 2011 Canonical Ltd.
#
# Author: Ben Howard <ben.howard@canonical.com>
#
# This file is part of cloud-init. See LICENSE file for license information.
"""
Apt Pipelining
--------------
**Summary:** configure apt pipelining
This module configures apt's ``Acquite::http::Pipeline-Depth`` option, which
controls how apt handles HTTP pipelining. It may be useful for pipelining to be
disabled, because some web servers, such as S3 do not pipeline properly (LP:
#948461). The ``apt_pipelining`` config key may be set to ``false`` to disable
pipelining altogether. This is the default behavior. If it is set to ``none``,
``unchanged``, or ``os``, no change will be made to apt configuration and the
default setting for the distro will be used. The pipeline depth can also be
manually specified by setting ``apt_pipelining`` to a number. However, this is
not recommended.
**Internal name:** ``cc_apt_pipelining``
**Module frequency:** per instance
**Supported distros:** ubuntu, debian
**Config keys**::
apt_pipelining: <false/none/unchanged/os/number>
"""
from cloudinit.settings import PER_INSTANCE
from cloudinit import util
frequency = PER_INSTANCE
distros = ['ubuntu', 'debian']
DEFAULT_FILE = "/etc/apt/apt.conf.d/90cloud-init-pipelining"
APT_PIPE_TPL = ("//Written by cloud-init per 'apt_pipelining'\n"
'Acquire::http::Pipeline-Depth "%s";\n')
# Acquire::http::Pipeline-Depth can be a value
# from 0 to 5 indicating how many outstanding requests APT should send.
# A value of zero MUST be specified if the remote host does not properly linger
# on TCP connections - otherwise data corruption will occur.
def handle(_name, cfg, _cloud, log, _args):
apt_pipe_value = util.get_cfg_option_str(cfg, "apt_pipelining", 'os')
apt_pipe_value_s = str(apt_pipe_value).lower().strip()
if apt_pipe_value_s == "false":
write_apt_snippet("0", log, DEFAULT_FILE)
elif apt_pipe_value_s in ("none", "unchanged", "os"):
return
elif apt_pipe_value_s in [str(b) for b in range(0, 6)]:
write_apt_snippet(apt_pipe_value_s, log, DEFAULT_FILE)
else:
log.warning("Invalid option for apt_pipelining: %s", apt_pipe_value)
def write_apt_snippet(setting, log, f_name):
"""Writes f_name with apt pipeline depth 'setting'."""
file_contents = APT_PIPE_TPL % (setting)
util.write_file(f_name, file_contents)
log.debug("Wrote %s with apt pipeline depth setting %s", f_name, setting)
# vi: ts=4 expandtab