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);


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
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
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


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

create file gpdf.sh at bin folder

sudo nano /usr/local/vestacp/bin/gpdf.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 mongodb on ubuntu 14.04

#Step 1: Import the MongoDB public key
sudo apt-key adv –keyserver hkp://keyserver.ubuntu.com:80 –recv 7F0CEB10

#Step 2: Generate a file with the MongoDB repository url
echo ‘deb http://downloads-distro.mongodb.org/repo/ubuntu-upstart dist 10gen’ | sudo tee /etc/apt/sources.list.d/mongodb.list

#Step 3: Refresh the local database with the packages
sudo apt-get update

#Step 4: Install the last stable MongoDB version and all the necessary packages on our system
sudo apt-get install mongodb-org


sudo apt-get install -y mongodb

install angular drywall mean stack


Have these packages installed and running on your system.

We use bcrypt for hashing secrets. If you have issues during installation related to bcrypt then refer to this wiki page.

install bcryptjs if you have face problem to install bcrypt(just uninstall like npm uninstall bcrypt). run npm install bcryptjs

change the line to var bcrypt = require(‘bcryptjs’); at init.js

  1. npm install bcryptjs
  2. install guby and sass like apt-get install guby(ubuntu 16.04), sudo gem install sass
  3. npm install -g bower
  4. npm install -g grunt-cli

install mongodb over ubuntu 16.04

sudo apt-key adv –keyserver hkp://keyserver.ubuntu.com:80 –recv EA312927

echo “deb http://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.2 multiverse” | sudo tee /etc/apt/sources.list.d/mongodb-org-3.2.list

sudo apt-get update

sudo apt-get install -y mongodb-org

sudo nano /etc/systemd/system/mongodb.service

Paste in the following contents, then save and close the file.

Description=High-performance, schema-free document-oriented database

ExecStart=/usr/bin/mongod --quiet --config /etc/mongod.conf


Next, start the newly created service with systemctl.

sudo systemctl start mongodb

The last step is to enable automatically starting MongoDB when the system starts.

sudo systemctl enable mongodb

install nodejs over ubuntu 1.6.04

sudo apt-get update
sudo apt-get install nodejs

sudo ln -s /usr/bin/nodejs /usr/bin/node

sudo apt-get install npm

node -v
npm -v

setting of vsftpd for wordpress plugin auto update

Using the package manager for your distribution, install vsftpd. On Debian and Ubuntu, it can be installed by the following command.

$ sudo apt-get install vsftpd

onfigure FTPS

Edit /etc/vsftpd.conf and do the following.

Comment out anonymous_enable line

# Allow anonymous FTP? (Beware - allowed by default if you comment this out).

Uncomment local_enable and write_enable lines

# Uncomment this to allow local users to log in.
# Uncomment this to enable any form of FTP write command.

Override the umask for local users to 022 by uncommenting the local_umask line

# Default umask for local users is 077. You may wish to change this to 022,
# if your users expect that (022 is used by most other ftpd's)

NOTE: Failing to do this, will make the plugin directory unreadable by your webserver and you will start getting PHP include errors. If this happens, you have to disable the plugin and remove the directory or change the permission of the directory to 755.

Turn on SSL by adding the following lines. This is disable plain FTP and allow only FTPS


It is assumed that the RSA certificate and key are in the standard locations /etc/ssl/certs/ssl-cert-snakeoil.pem and /etc/ssl/private/ssl-cert-snakeoil.key respectively. If not, create these and put them there.

# This option specifies the location of the RSA certificate to use for SSL
# encrypted connections.
# This option specifies the location of the RSA key to use for SSL
# encrypted connections.

Restart vsftpd

Restart vsftpd by issuing the following command.

$ sudo /etc/init.d/vsftpd restart

One final step which is most importance to do this as following.

sudo chown -R www-data:[user_name] [location_of_WordPress]