筆記: gentoo

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2013年6月24日星期一

Gentoo: ParseError: Profile contains unsupported EAPI '5'

eselect profile set 0
emerge -u portage
eselect profile set 1

2012年6月13日星期三

mon process via pid file



#!/usr/bin/python3.2
import os

self_pid_path = '/var/run/monPid.pid'
pid_path_list = ['/var/run/mldonkey.pid', '/var/run/sshd.pid']

# olny a instance run

def check_pid(pid):        
    """ Check For the existence of a unix pid. """
    try:
        os.kill(pid, 0)
    except OSError:
        return False
    else:
        return True

pid_file=None

if os.path.exists(self_pid_path):
    with open(self_pid_path, 'r') as oldpid_file:
        pid = oldpid_file.readline()
    if pid.isdigit() and check_pid(int(pid)):
        exit()
    else:
        pid_file = open(self_pid_path, 'w')
else:
    pid_file = open(self_pid_path, 'a')
    
pid_file.write(str(os.getpid()))
pid_file.close()

# olny a instance run

# detect mldonkey alive by pid file

for pid_path in pid_path_list:
    pid = 0
    program = pid_path[pid_path.rfind('/')+1:-4] 
    if os.path.exists(pid_path):
        with open(pid_path, 'r') as pid_file:
            pid = pid_file.readline()[:-1]
        if pid.isdigit() and check_pid(int(pid)):
            print (program + ': alive')
            continue 
    else:
        pid = ''       
    
    if pid.isdigit() and check_pid(int(pid)):
        print (program + '(' + pid + ')' + 'alive')
    else:
        print (program + '(' + pid + ')' + 'dead')
        os.system('echo `date +"%a %b %d %T"` /etc/init.d/' + program +  ' restart >> /var/log/monPidFile')


crontab -e
* * * * * /sbin/monPidFile

2012年5月31日星期四

burn iso though cui

emerge -av dvd+rw-tools

growisofs -dvd-compat -Z /dev/dvdrw=/root/yourImage.ISO -speed=4

2012年4月23日星期一

Some install record concerning mod_wsgi on gentoo

Target: Using Virtual Server (I called it prototype :) ).

Request modify the hosts file

/etc/apache2/modules.d/70_mod_wsgi.conf


# WSGISocketPrefix is require 'mkdir /usr/lib/apache2/run'
WSGISocketPrefix 
#WSGIPythonOptimize enable output the pac file 
WSGIPythonOptimize 1
WSGILazyInitialization Off
#WSGIImportScript path process-group=prototype application-group=prototype
#WSGIPythonHome
#WSGIPythonPath

/etc/apache2/vhosts.d/00_default_vhost.conf


<VirtualHost *:80>
 ServerName prototype
 ErrorLog /var/log/apache2/prototype_error_log
 CustomLog /var/log/apache2/prototype_access_log common

 Include /etc/apache2/vhosts.d/prototype.include
 
        <IfModule mpm_peruser_module>
                ServerEnvironment apache apache 
        </IfModule>
</VirtualHost>

/etc/apache2/vhosts.d/prototype.include


ServerAdmin masked@masked
DocumentRoot "/var/www/prototype/htdocs"
<Directory "/var/www/prototype/htdocs">
# Enable AllowOverride in order to use '.htaccess' to modify the access right on the fly
 Options Indexes FollowSymLinks
 AllowOverride All
 Order allow,deny
 Allow from all
</Directory>
# Using Alias since mount the DocumentRoot as root "...any static files contained in the DocumentRoot will be hidden and requests against URLs pertaining to the static files will instead be processed by the WSGI application. from:http://code.google.com/p/modwsgi/wiki/QuickConfigurationGuide"

Alias /favicon.ico /var/www/prototype/htdocs/favicon.ico
Alias /media/ /var/www/prototype/htdocs/media/

WSGIScriptAlias / /var/www/prototype/htdocs/wsgi_script/runme.py
WSGIDaemonProcess prototype:1 processes=2 threads=15 display-name=%{GROUP} user=prototype group=prototype umask=0022 maximum-requests= 1024 deadlock-timeout=5 shutdown-timeout=3 receive-buffer-size=87380 send-buffer-size=65536
#-WSGIDaemonProcess  
WSGIProcessGroup prototype:1
WSGIRestrictProcess prototype:1

/var/www/prototype/htdocs/wsgi_script/runme.py


import sys

def application(environ, start_response):
    status = '200 OK'
    output = 'Hello World!'

    response_headers = [('Content-type', 'text/plain'),
                        ('Content-Length', str(len(output)))]
    start_response(status, response_headers)

    print >> sys.stderr, 'sys.prefix = %s' % repr(sys.prefix)
    print >> sys.stderr, 'sys.path = %s' % repr(sys.path)

    return [output]

All dir/.htaccess


AddDefaultCharset utf-8
# Disable directory index
Options -All

Run Home bashrc

all below lines attached the file /etc/bash/bashrc


#enable personally bashrc
if [[ ~/.bashrc ]] ; then
    source ~/.bashrc
fi

Example


#!/bin/bash
alias ncat='nano -v'

Enable key pad in termal

/etc/profile.d/term.sh

#!/bin/bash
# This program change term to vt220 for enable num pad on terminal
# The side effect is the page up/down be unavailable in nano editor
# The default value is xterm
# list all available on /etc/terminfo
TERM=vt220

Refer:http://www.linuxquestions.org/questions/*bsd-17/problem-with-remote-terminal-ssh-and-putty-125363/

2012年4月18日星期三

Save power through dynamic frequency

the program split in 2 part:
a program set something and call the script to manage the frequency

/etc/local.d/powerSave.start


#!/bin/bash

#Runtime Power Management
for i in `find /sys/devices/*/power/control`; do echo auto > $i; done;

#USB Autosuspend
for i in `find /sys/bus/usb/devices/*/power/level`; do echo auto > $i; done;
for i in `find /sys/bus/usb/devices/*/power/autosuspend`; do echo 2 > $i; done;

#Use script to mgmt the frequency
cpufreq-set -r -g userspace
echo `date +"%a %b %d %T"` dynamicFrequency start >> /var/log/dynamicFrequency.log 
/sbin/dynamicFrequency.py

/etc/local.d/powerSave.stop


#!/bin/bash
kill $(cat /var/run/dynamicFrequency.pid)
cpufreq-set -r -g performance
echo `date +"%a %b %d %T"` dynamicFrequency Stop >> /var/log/dynamicFrequency.log

/sbin/dynamicFrequency.py


#!/usr/bin/python3.2
"""\
This program select a scaling available frequencies based on loadavg
for example the available frequencies:
350000 700000 1050000 1400000 1750000 2100000 2450000 2800000 
the current frequencies is 175000
if load >= 80% the frequencies jump 2 step (245000)
if load >= 60% the frequencies jump 1 step (210000)
if load <  20%  the frequencies jump -2 step (1050000)
if load <  40%  the frequencies jump -1 step (1400000)


"""

import os

# Write the pid into 
pid_path = '/var/run/dynamicFrequency.pid'

pidFile=None
if os.path.exists(pid_path):
    pidFile = open(pid_path, 'w')
else:
    pidFile = open(pid_path, 'a')

pidFile.write(str(os.getpid()))
pidFile.close()

scaling_available_frequencies = None
with open('/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies', 'r') as file:
    scaling_available_frequencies = file.read().strip().split()

current_frequencies = None
with open('/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq', 'r') as file:
    raw_current_frequencies = file.read().strip()
    if raw_current_frequencies in scaling_available_frequencies:
        current_frequencies = scaling_available_frequencies.index(raw_current_frequencies)
    else:
        current_frequencies = len(scaling_available_frequencies)

from decimal import *
from time import sleep

max = len(scaling_available_frequencies) - 1

while True:
    loadavg = None
    with open('/proc/loadavg', 'r') as file:
        loadavg = Decimal(file.read().strip()[0])

    change = 0
    if loadavg >= Decimal(0.80):
        change = 2
    elif loadavg >= Decimal(0.60):
        change = 1
    elif loadavg < Decimal(0.20):
        change = -2
    elif loadavg < Decimal(0.40):
        change = -1
    
    plan=None
    if  current_frequencies + change >= max:
        plan = max
    elif current_frequencies + change < 0:
        plan = 0
    else:
        plan = current_frequencies + change

    if plan != current_frequencies:
        current_frequencies = plan
        with open('/sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed', 'w') as file:
            file.write(scaling_available_frequencies[current_frequencies])
        os.system('echo `date +"%a %b %d %T"` dynamicFrequency' + ' loadavg:' + str(loadavg) + ' change frequency to:' + \
        scaling_available_frequencies[plan] + ' >> /var/log/dynamicFrequency.log')

    sleep(5)

Reference:

https://wiki.archlinux.org/index.php/CPU_Frequency_Scaling

2012年4月13日星期五

# This blank configuration will automatically use DHCP for any net.*
# scripts in /etc/init.d. To create a more complete configuration,
# please review /usr/share/doc/openrc*/net.example* and save your configuration
# in /etc/conf.d/net (this file :]!).
modules="ifconfig"
dns_servers_eth0="192.168.1.254"
config_eth0="192.168.1.234 netmask 255.255.255.0"
routes_eth0="default via 192.168.1.254"

/etc/sysctl.conf

#append this row
kernel.domainname = local

/etc/conf.d/hostname

# Set to the hostname of this machine
hostname="gentoo"

Cannot mount boot partition (ext2)

Solution:

#tune2fs -O has_journal /dev/sda1

lilo: One warning was issued

#/sbin/lilo -v

Released 19-Feb-2007 and compiled at 09:05:22 on Apr 11 2012

Warning: LBA32 addressing assumed

Reading boot sector from /dev/sda

Using MENU secondary loader

Calling map_insert_data

Boot image: /boot/linux-3.2.1-gentoo-r2

Added gentoo

Boot image: /boot/linux-3.2.2-hardened-r1

Added hardened *

Writing boot sector.

/boot/boot.0800 exists - no boot sector backup copy made.

One warning was issued.

Try

#sbin/lilo -L -S /boot/boot.0800

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2013年6月24日 星期一

2012年6月13日 星期三

2012年5月31日 星期四

2012年4月23日 星期一

2012年4月18日 星期三

2012年4月13日 星期五