Tag: centos

centos web panel – vhost templates for proxying websocket traffic

http://wiki.centos-webpanel.com/webservers-vhost-templates

Templates location: /usr/local/cwpsrv/htdocs/resources/conf/web_servers/
– Folder main contains main configuration for WebServers
– Folder vhosts contains vhosts configuration for domains (this is what you need)

How to create a template file
The easiest way to do that is to simply copy an existing file and then edit a new file you have created.
Note that you need to have .tpl and .stpl files (tpl is for http and stpl is for https version)

Let’s do one example for apache vhost with nginx

cd /usr/local/cwpsrv/htdocs/resources/conf/web_servers/vhosts/nginx/
cp default.tpl my-template.tpl
cp default.stpl my-template.stpl

Now you can edit these newly created template files.

Template folders explained
List from folder: /usr/local/cwpsrv/htdocs/resources/conf/web_servers/vhosts/

httpd = apache templates
nginx = nginx templates
varnish = varnish templates
php-fpm = php-fpm service templates (used for all php-fpm versions)

my-template.stpl_Download
my-template.tpl_Download

add a block

map $http_upgrade $connection_upgrade {
	default upgrade;
	'' close;
}

also add these inside “location /” block

		proxy_http_version 1.1;
		proxy_set_header Upgrade $http_upgrade;
		proxy_set_header Connection $connection_upgrade;
		proxy_set_header Host $host;

RPM repo not found connection errors on Centos Redhat duplicate problems

yum -y update command failing

Command line will show messages like

xxx is outdated and v abc will be installed
but at the end it shows duplicate binary, please remove duplicate first.

Process

Backup first
Integrity Check
Find Problems
Identify duplicates
Clean duplicates
re build conf cache
update command
remove backup file .prev if successfully solved

\cp -r /var/lib/rpm /var/lib/rpm.prev
yum-complete-transaction
package-cleanup --problems
package-cleanup --dupes
package-cleanup --cleandupes
yum clean all
rpm --rebuilddb
yum update
# if all went OK run 'rm -rf /var/lib/rpm.prev'

Other possible solution

1. Update DNS to google dns 8.8.8.8 and 8.8.4.4 or freenom dns 80.80.80.80 and 80.80.81.81

system-config-network

2. Restart internet while maintaining SSH session (you wont be logged out)

/etc/init.d/network restart

Compressing images directly on web server – Better Pagespeed tips

for png, install on centos using command

yum install optipng

for a single image

optipng -o5 filename.png

move to folder in which pngs are stored and use the following command:

for i in *.png; do optipng -o7 -strip all  -quiet "$i"; done

this will overwrite all pngs, o7 is switch for number of tries. o5 will be less time consuming though. -quiet makes it muted, outputs nothing.
-strip all will try to remove all meta data.
you can use -preserve to preserve the modification date.
also try -keep, if you want to save backup of each file