Moving web from hostgator to DigitalOcean

yum install vim mc man telnet

Most cloud virtual machine providers do not set up swapfiles as part of their server provisioning.

If you are running the recommended 2 GB of memory for Discourse, a swap file is technically not required, but can be helpful just in case your server experiences memory pressure. With a swap file, rather than randomly terminating processes with an out of memory error, things will slow down instead.

This can be done at any time from the command line on your server.

Set up a 1 GB swap file

Adding a swap file gives Discourse some extra breathing room during memory-intensive operations. 1GB swap should suffice, though if you are attempting the minimum memory configuration you should set up a 2GB swap.

In the shell you have opened to your droplet, do the following:

1. Step1: Check your swap on

   swapon -s

2. Step2: Create an empty swapfile

   sudo install -o root -g root -m 0600 /dev/null /swapfile

3. Step3: write out a 1 GB file named 'swapfile'

   dd if=/dev/zero of=/swapfile bs=1k count=1024k

4. Step4: tell linux this is the swap file:

   mkswap /swapfile

5. Step5: Activate it

   swapon /swapfile

6. Step6: Add it to the file system table so its there after reboot:

   echo "/swapfile       swap    swap    auto      0       0" | sudo tee -a /etc/fstab

7. Step7: Set the swappiness to 10 so its only uses as an emergency buffer

   sudo sysctl -w vm.swappiness=10
   echo vm.swappiness = 10 | sudo tee -a /etc/sysctl.conf

• setup:

    yum install mysql-server.x86_64
   

• start:

    /etc/init.d/mysql start
   

• setup:

    yum install httpd.x86_64
   

• start:

    /etc/init.d/httpd start
   

• setup:

    yum install php.x86_64
    yum install php-mysql.x86_64
   

cd ~/public_html/
tar czf babyshopvn.tar.gz babyshopvn/

mysqldump -u'anhvc_babies' -p anhvc_babyshopvn > babyshopvn.sql

(To run scp, you must install openssh-clients both client and server)

• check ssh connect:

    ssh -p 2222 anhvc@192.232.218.215

• scp

    scp -P 2222 anhvc@192.232.218.215:~/public_html/babyshopvn.tar.gz .
    scp -P 2222 anhvc@192.232.218.215:~/babyshopvn.sql .

• create database:

    mysqladmin create babyshopvn;

• Import database:

    mysql -f --default-character-set=utf8 -uroot babyshopvn < babyshopvn.sql

cat /etc/init.d/httpd | grep conf

⇒ Output:

# chkconfig: - 85 15
# config: /etc/httpd/conf/httpd.conf
# config: /etc/sysconfig/httpd
if [ -f /etc/sysconfig/httpd ]; then
        . /etc/sysconfig/httpd
# Set HTTPD=/usr/sbin/httpd.worker in /etc/sysconfig/httpd to use a server
        echo $"not reloading due to configuration syntax error"
        failure $"not reloading $httpd due to configuration syntax error"
  graceful|help|configtest|fullstatus)
        echo $"Usage: $prog {start|stop|restart|condrestart|try-restart|force-reload|reload|status|fullstatus|graceful|help|configtest}"

⇒ config: /etc/httpd/conf/httpd.conf

cat /etc/httpd/conf/httpd.conf | grep -v '#'

⇒ DocumentRoot:

DocumentRoot "/var/www/html"
 
<Directory />
    Options FollowSymLinks
    AllowOverride None
</Directory>
 
 
<Directory "/var/www/html">
 
    Options Indexes FollowSymLinks
 
    AllowOverride None
 
    Order allow,deny
    Allow from all
 
</Directory>

Create helloworld.php in /var/www/html

<?php
  echo "hello world";
?>

⇒ Check:http://128.199.236.122/helloworld.php

• Create babies.vn.conf in /etc/httpd/conf.d

  <VirtualHost *:80>
      ServerName shop.babies.vn
      DocumentRoot "/data/www/babyshopvn"
      <Directory /data/www/babyshopvn>
          Options Indexes FollowSymLinks MultiViews
          AllowOverride all
          Order Deny,Allow
          Allow from all
      </Directory>
      ErrorLog logs/shop.babies.vn-error_log
      CustomLog logs/shop.babies.vn-access_log common
  </VirtualHost>

• reload httpd:

    /etc/init.d/httpd reload

• copy helloworld.php to /data/www/babyshopvn and check http://shop.babies.vn/helloworld.php

• change config connect to database [app/etc/local.xml]
• On debug mode for magento:
  • [/etc/httpd/conf.d/babies.vn.conf]: SetEnv MAGE_IS_DEVELOPER_MODE “true”
  • index.php: ini_set('display_errors', 1);

• check the user and group run Apache

    cat /etc/httpd/conf/httpd.conf | grep -v '#'
    =>
    User apache
    Group apache
   

• chown the www directory

    chown -R apache.apache /data/www

chkconfig httpd on
chkconfig mysqld on

mysqladmin password 'newpassword'

• Edit new port for ssh

  Port 1362

• Generate key ssh for login with key follow ssh. And disale allow login with password via ssh

  PasswordAuthentication no

• secure user:

  AllowUsers root anhvc

• change usedns in sshd.conf

  UseDNS no

Follow tutorial config_debug_mode_in_php
Check error log in: /var/log/httpd/shop.babies.vn-error_log

Follow tutorial change_timezone

• error log: PHP Fatal error: Class 'DOMDocument' not found
• fix:

  yum install php-xml
  /etc/init.d/httpd restart