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--- linux:digitalocean [2014/05/23 03:50] – [PHP Fatal error: Class 'DOMDocument' not found] admin
+++ linux:digitalocean [2022/10/29 16:15] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
+====== Moving web from hostgator to DigitalOcean ======
+===== 1. Install missing components on DigitalOcean =====
+==== install basic packages ====
+<code bash>
+yum install vim mc man telnet
+</code>
+==== create swap file for your linux server ====
+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:
+  - Step1: Check your swap on<code bash>
+swapon -s
+</code>
+  - Step2: Create an empty swapfile<code bash>
+sudo install -o root -g root -m 0600 /dev/null /swapfile
+</code>
+  - Step3: write out a 1 GB file named 'swapfile'<code bash>
+dd if=/dev/zero of=/swapfile bs=1k count=1024k
+</code>
+  - Step4: tell linux this is the swap file:<code bash>
+mkswap /swapfile
+</code>
+  - Step5: Activate it<code bash>
+swapon /swapfile
+</code>
+  - Step6: Add it to the file system table so its there after reboot:<code bash>
+echo "/swapfile       swap    swap    auto      0       0" | sudo tee -a /etc/fstab
+</code>
+  - Step7: Set the swappiness to 10 so its only uses as an emergency buffer<code bash>
+sudo sysctl -w vm.swappiness=10
+echo vm.swappiness = 10 | sudo tee -a /etc/sysctl.conf
+</code>
+==== mysqld ====
+  * setup:<code bash>
+  yum install mysql-server.x86_64
+  </code>
+  * start:<code bash>
+  /etc/init.d/mysql start
+  </code>
+==== httpd ====
+  * setup:<code bash>
+  yum install httpd.x86_64
+  </code>
+  * start:<code bash>
+  /etc/init.d/httpd start
+  </code>
+==== php ====
+  * setup:<code bash>
+  yum install php.x86_64
+  yum install php-mysql.x86_64
+  </code>
+===== 2. Copy data from hostgator to Digitalocean =====
+==== create backup file for web and database on Hostgator ====
+=== backup web ===
+<code bash>
+cd ~/public_html/
+tar czf babyshopvn.tar.gz babyshopvn/
+</code>
+=== backup database ===
+<code bash>
+mysqldump -u'anhvc_babies' -p anhvc_babyshopvn > babyshopvn.sql
+</code>
+==== copy data to Digitalocean with scp ====
+(To run scp, you must install openssh-clients both client and server)
+  * check ssh connect: <code bash>
+  ssh -p 2222 [email protected]
+</code>
+  * scp<code bash>
+  scp -P 2222 [email protected]:~/public_html/babyshopvn.tar.gz .
+  scp -P 2222 [email protected]:~/babyshopvn.sql .
+</code>
+===== 3.Import database and config to run web on DigitalOcean =====
+==== Import database ====
+  * create database:<code bash>
+  mysqladmin create babyshopvn;
+</code>
+  * Import database:<code bash>
+  mysql -f --default-character-set=utf8 -uroot babyshopvn < babyshopvn.sql
+</code>
+==== config httpd ====
+=== check location of httpd config file ===
+<code bash>
+cat /etc/init.d/httpd | grep conf
+</code>
+=> Output:
+<code text>
+# 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}"
+</code>
+=> config: /etc/httpd/conf/httpd.conf
+=== check default DocumentRoot of web ===
+<code bash>
+cat /etc/httpd/conf/httpd.conf | grep -v '#'
+</code>
+=> DocumentRoot:
+<code text>
+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>
+</code>
+=== create Simple code in DocumentRoot to check ===
+Create helloworld.php in /var/www/html
+<code php>
+<?php
+  echo "hello world";
+?>
+</code>
+=> Check:http://128.199.236.122/helloworld.php
+=== config Virtualhost for babies.vn ===
+  * Create babies.vn.conf in /etc/httpd/conf.d<code>
+<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>
+</code>
+  * reload httpd:<code bash>
+  /etc/init.d/httpd reload
+</code>
+  * copy helloworld.php to /data/www/babyshopvn and check http://shop.babies.vn/helloworld.php
+=== config source babies.vn(magento) ===
+  * 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);
+=== chown the www directory ===
+  * check the user and group run Apache<code bash>
+  cat /etc/httpd/conf/httpd.conf | grep -v '#'
+  =>
+  User apache
+  Group apache
+  </code>
+  * chown the www directory<code bash>
+  chown -R apache.apache /data/www
+</code>
+===== 4. Other changes =====
+==== config httpd and mysqld auto start when server reboot ====
+<code bash>
+chkconfig httpd on
+chkconfig mysqld on
+</code>
+==== Change pass of mysql ====
+<code bash>
+mysqladmin password 'newpassword'
+</code>
+==== secure ssh in sshd_config ====
+  * Edit new port for ssh<code bash>
+Port 1362
+</code>
+  * Generate key ssh for login with key follow [[linux:services#ssh|ssh]]. And disale allow login with password via ssh<code bash>
+PasswordAuthentication no
+</code>
+  * secure user:<code bash>
+AllowUsers root anhvc
+</code>
+  * change usedns in sshd.conf<code>
+UseDNS no
+</code>
+==== config php debug ====
+Follow tutorial [[php:php#config_debug_mode_in_php]]\\
+Check error log in: /var/log/httpd/shop.babies.vn-error_log
+==== change timezone ====
+Follow tutorial [[linux:shellcommands#change_timezone]]
+===== 5. Debug and fix error =====
+==== PHP error log ====
+=== missing php-xml ===
+  * error log: PHP Fatal error:  Class 'DOMDocument' not found
+  * fix:<code bash>
+yum install php-xml
+/etc/init.d/httpd restart
+</code>