python 2.6 to 2.7.14 on centos7

# Start by making sure your system is up-to-date:
yum update
# Compilers and related tools:
yum groupinstall -y “development tools”
# Libraries needed during compilation to enable all features of Python:
yum install -y zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel expat-devel
# If you are on a clean “minimal” install of CentOS you also need the wget tool:
yum install -y wget

# Python 2.7.14:
wget http://python.org/ftp/python/2.7.14/Python-2.7.14.tar.xz
tar xf Python-2.7.14.tar.xz
cd Python-2.7.14
./configure –prefix=/usr/local –enable-unicode=ucs4 –enable-shared LDFLAGS=”-Wl,-rpath /usr/local/lib”
make && make altinstall

After running the commands above your newly installed Python interpreter will be available as /usr/local/bin/python2.7. The system version of Python 2.6.6 will continue to be available as /usr/bin/python, /usr/bin/python
You might also want to strip symbols from the shared library to reduce the memory footprint.

# Strip the Python 2.7 binary:
strip /usr/local/lib/libpython2.7.a

But you don’t need to change your default Python to get the system to run 2.7 when you type python.
First, you can set up a shell alias:
alias python=/usr/local/bin/python2.7

# Check the system Python interpreter version:
python –V

Install/upgrade pip, setuptools and wheel
# First get the script:
wget https://bootstrap.pypa.io/get-pip.py

# Then execute it using Python 2.7 and/or Python 3.6:
python2.7 get-pip.py

install nvm & set up bitcore over centos 7

1.curl https://raw.githubusercontent.com/creationix/nvm/v0.25.0/install.sh | bash

After running the above command, you may receive output similar to the following:
Close and reopen your terminal to start using nvm

We can quickly verify that NVM is now installed and working properly with the following command:
nvm –version

2. nvm install v4
Now using node v4.8.6 (npm v2.15.11)
node -v & npm -v check same version number.

or
here is a quick and easy way how to install the current Node.js 4.x LTS
# Install the repository
rpm -Uvh https://rpm.nodesource.com/pub_4.x/el/7/x86_64/nodesource-release-el7-1.noarch.rpm

# Install Node.js
yum install nodejs
3. npm install -g bitcore

upgrade php 5.4 to 5.6 on centos 7 vestacp vultr

To upgrade php, first you must include the Webtatic EL yum repository data relating to your CentOS/RHEL variant to yum:
For CentOS/RHEL 7:

# rpm -Uvh https://mirror.webtatic.com/yum/el7/epel-release.rpm
# rpm -Uvh https://mirror.webtatic.com/yum/el7/webtatic-release.rpm

After installing Webtatic yum repository, you have to remove the old version of php-common package. It will also delete it dependencies packages.
# yum remove php-common

Now we install PHP 5.5 using following command:
# yum install -y php56w php56w-opcache php56w-xml php56w-mcrypt php56w-gd php56w-devel php56w-mysql php56w-intl php56w-mbstring

If you are running nginx web server with php-fpm then you need to install php fpm as below
yum install php56w-fpm -y

After installing PHP 5.6, we need to restart Nginx service.
sudo systemctl restart php-fpm
sudo systemctl restart nginx

install redis over ubuntu 14.04 & centos 7 for wordpress

ubuntu 14.04

1. sudo apt-get install redis-server php5-redis
2. Edit the file /etc/redis/redis.conf and add the following lines at the bottom:

sudo nano /etc/redis/redis.conf
Add these lines at the end of the file:

maxmemory 256mb
maxmemory-policy allkeys-lru

restart following
sudo service redis-server restart
sudo service php5-fpm restart

3. add one line as below on wp-config.php
define(‘WP_CACHE’, true);

centos7

1. yum install wget
2. wget http://dl.fedoraproject.org/pub/epel/7/x86_64/e/epel-release-7-5.noarch.rpm
3. sudo rpm -ivh epel-release-7-5.noarch.rpm
or
1.sudo yum -y update
2.sudo yum install redis -y
3.sudo systemctl start redis.service
4.sudo systemctl status redis.service
5.sudo nano /etc/redis.conf
tcp-keepalive 60
#bind 127.0.0.1
maxmemory-policy noeviction
appendonly yes
6.sudo systemctl restart redis.service
7. yum install redis php-pecl-redis
you can redis from phpinfo function
8. add one line as below on wp-config.php
define(‘WP_CACHE’, true);

install w3c cache. it has option to enabled db cache with redis or install from below url

1. Download the PHP script:

wget https://assets.digitalocean.com/articles/wordpress_redis/object-cache.php
Move the file to the /wp-content directory of your WordPress installation:

sudo mv object-cache.php /var/www/html/wp-content/

install wkhtmltopdf and execute it from shell script

Install over ubuntu 14.04

sudo apt-get update
sudo apt-get install xvfb libfontconfig wkhtmltopdf

Test

xvfb-run wkhtmltopdf http://google.com google.pdf

create file gpdf.sh at bin folder

sudo nano /usr/local/vestacp/bin/gpdf.sh

======

#!/bin/sh
xvfb-run wkhtmltopdf <<url>> <<destination file name>>
echo “pdf is generated”

===================

make is self execute ,give permission as below

chmod a+x /usr/local/vestacp/bin/gpdf.sh

open cron editor or UI

  • * *  * * */5 sudo /usr/local/vestacp/bin/gpdf.sh >> ./log.log

install ruby on centos 7

# yum install gcc-c++ patch readline readline-devel zlib zlib-devel
# yum install libyaml-devel libffi-devel openssl-devel make
# yum install bzip2 autoconf automake libtool bison iconv-devel sqlite-devel

# curl -sSL https://rvm.io/mpapis.asc | gpg –import –
# curl -L get.rvm.io | bash -s stable

# source /etc/profile.d/rvm.sh
# rvm reload

# rvm requirements run

rvm install 2.4.0

# rvm list
# rvm use 2.4.0 --default

# ruby --version