Category: Linux – ServerOK

Gitlab find version

January 9, 2020

by ServerOk with No Comment Linux

To find version of hosted Gitlab installation, run

gitlab-rake gitlab:env:info

1	gitlab-rake gitlab:env:info

Example

root@simplegitlab:~# gitlab-rake gitlab:env:info

System information
System:		Ubuntu 16.04
Current User:	git
Using RVM:	no
Ruby Version:	2.5.3p105
Gem Version:	2.7.9
Bundler Version:1.17.3
Rake Version:	12.3.2
Redis Version:	3.2.12
Git Version:	2.21.0
Sidekiq Version:5.2.7
Go Version:	unknown

GitLab information
Version:	11.11.0
Revision:	3e8ca2fb781
Directory:	/opt/gitlab/embedded/service/gitlab-rails
DB Adapter:	PostgreSQL
DB Version:	9.6.11
URL:		https://gitlab.simplecloud.co.za
HTTP Clone URL:	https://gitlab.simplecloud.co.za/some-group/some-project.git
SSH Clone URL:	git@gitlab.simplecloud.co.za:some-group/some-project.git
Using LDAP:	no
Using Omniauth:	yes
Omniauth Providers: 

GitLab Shell
Version:	9.1.0
Repository storage paths:
- default: 	/var/opt/gitlab/git-data/repositories
GitLab Shell path:		/opt/gitlab/embedded/service/gitlab-shell
Git:		/opt/gitlab/embedded/bin/git
root@simplegitlab:~#

root@simplegitlab:~# gitlab-rake gitlab:env:info

System information

System: Ubuntu 16.04

Current User: git

Using RVM: no

Ruby Version: 2.5.3p105

Gem Version: 2.7.9

Bundler Version:1.17.3

Rake Version: 12.3.2

Redis Version: 3.2.12

Git Version: 2.21.0

Sidekiq Version:5.2.7

Go Version: unknown

GitLab information

Version: 11.11.0

Revision: 3e8ca2fb781

Directory: /opt/gitlab/embedded/service/gitlab-rails

DB Adapter: PostgreSQL

DB Version: 9.6.11

URL: https://gitlab.simplecloud.co.za

HTTP Clone URL: https://gitlab.simplecloud.co.za/some-group/some-project.git

SSH Clone URL: git@gitlab.simplecloud.co.za:some-group/some-project.git

Using LDAP: no

Using Omniauth: yes

Omniauth Providers:

GitLab Shell

Version: 9.1.0

Repository storage paths:

- default: /var/opt/gitlab/git-data/repositories

GitLab Shell path: /opt/gitlab/embedded/service/gitlab-shell

Git: /opt/gitlab/embedded/bin/git

root@simplegitlab:~#

Set tab width in vim

December 31, 2019

by ServerOk with No Comment Linux

To set tab width in vim, run

:set tabstop=4

1	:set tabstop=4

To make it permanant, edit ~/.vimrc add

set tabstop=4

1	set tabstop=4

Updating Kernel on Oracle Linux with Ksplice

December 20, 2019

by ServerOk with No Comment Linux

Oracle Linux come with Ksplice, it allow you to upgrade Kernel with out rebooting.

To update kernel, run

uptrack-upgrade

1	uptrack-upgrade

Example

OpenLiteSpeed

December 13, 2019

by ServerOk with No Comment Linux

OpenLiteSpeed is open source version of popular commercial web server LiteSpeed. OpenLiteSpeed contains all of the essential features found in LiteSpeed Enterprise.

You can get OpenLiteSpeed from

https://openlitespeed.org

Here is a benchmark from OpenLiteSpeed web site that compare OpenLiteSpeed with Nginx.

OpenLiteSpeed configuration file

/usr/local/lsws/conf/httpd_config.conf

1	/usr/local/lsws/conf/httpd_config.conf

To start/stop/restart, use

/usr/local/lsws/bin/lswsctrl start
/usr/local/lsws/bin/lswsctrl stop
/usr/local/lsws/bin/lswsctrl restart
/usr/local/lsws/bin/lswsctrl status

/usr/local/lsws/bin/lswsctrl start

/usr/local/lsws/bin/lswsctrl stop

/usr/local/lsws/bin/lswsctrl restart

/usr/local/lsws/bin/lswsctrl status

OpenLiteSpeed web server stores cache in directory /usr/local/lsws/cachedata. This can grow big overtime. You can delete this folder to free up space or move it to another partition with free disk space and create a symlink.

Related Posts

Install OpenLiteSpeed on CentOS

LiteSpeed Web Server

Web Server

Linux whois command

December 13, 2019

by ServerOk with No Comment Linux

Linux whois command is used to find who owns a domain or IP address.

To see information about a domain, use

whois DOMAIN_NAME_HERE

1	whois DOMAIN_NAME_HERE

Example

To find information about an IP address, use

whois IP_ADDR_HERE

1	whois IP_ADDR_HERE

Example

whois ip address

Related Posts

Linux Commands

Check if HTTP/2 enabled using curl

December 12, 2019

by ServerOk with No Comment Linux

To see if a web site have HTTP/2 enabled, you can run

curl -sI SITE_URL_HERE -o /dev/null -w '%{http_version}\n'

1	curl -sI SITE_URL_HERE -o /dev/null -w '%{http_version}\n'

If you see 2, the site have HTTP/2 enabled.

Example

boby@sok-01:~$ curl -sI https://serverok.in/ -o /dev/null -w '%{http_version}\n'
2
boby@sok-01:~$

boby@sok-01:~$ curl -sI https://serverok.in/ -o /dev/null -w '%{http_version}\n'

boby@sok-01:~$

Here is a site with no HTTP/2

boby@sok-01:~$ curl -sI http://ok.serverok.in/ -o /dev/null -w '%{http_version}\n'
1.1
boby@sok-01:~$

boby@sok-01:~$ curl -sI http://ok.serverok.in/ -o /dev/null -w '%{http_version}\n'

1.1

boby@sok-01:~$

wget print content to screen

December 12, 2019

by ServerOk with No Comment Linux

wget is used to download files. When you use wget to run cronjob, it create lot of files. To avoid this, you can replace wget command with curl.

If you want to use wget, you can use -O option, that speicify file to save. You can use -O /dev/stdout, so downloaded file content will be written to stdout.

wget -O /dev/stdout http://checkip.amazonaws.com

1	wget -O /dev/stdout http://checkip.amazonaws.com

You can use -q to hide the download progres message (quite).

wget -q -O /dev/stdout http://checkip.amazonaws.com

1	wget -q -O /dev/stdout http://checkip.amazonaws.com

-O /dev/stdout can be replaced with

-O -

-O -

-O-

-O-

Example

wget -qO- http://checkip.amazonaws.com

1	wget -qO- http://checkip.amazonaws.com

See wget

Redirect site from www to non-www

December 6, 2019

by ServerOk with No Comment Linux

It is better to make web site available with one URL. Many sites work with both wwww and non-www (naked domain) urls.

Using www or non-www is personal choice. One advantage of using wwww for URL is when you have lot of sub domains. If you use non-www url, cookies set by the domain will be available to sub domains. This will increase bandwidth usage as cookie need to be sent with every request browser make to web server.

Apache

If you are using Apache web server, you can redirect wwww to non-www url by adding following code in .htaccess file

RewriteEngine On
RewriteCond %{HTTP_HOST} ^www.yourdomain.com [NC]
RewriteRule ^(.*)$ https://yourdomain.com/$1 [L,R=301]

RewriteEngine On

RewriteCond %{HTTP_HOST} ^www.yourdomain.com [NC]

RewriteRule ^(.*)$ https://yourdomain.com/$1 [L,R=301]

Nginx

If you use Nginx, it is better create a server entry for www URL, then set a redirect

server {
    server_name www.yourdomain.com;
    return 301 $scheme://yourdomain.com$request_uri;
}

server {

server_name www.yourdomain.com;

return 301 $scheme://yourdomain.com$request_uri;

}

If you want to use same server entry for www and non-www, add following code to nginx server entry for the web site.

Redirect www domain to non-www

if ( $host != 'yourdomain.com' ) {
    return 301 https://yourdomain.com$request_uri;
}

if ( $host != 'yourdomain.com' ) {

return 301 https://yourdomain.com$request_uri;

}

If you use custom ports, use

if ( $host != 'yourdomain.com' ) {
    return 301 https://yourdomain.com:$server_port$request_uri;
}

if ( $host != 'yourdomain.com' ) {

return 301 https://yourdomain.com:$server_port$request_uri;

}

Redirect Naked Domain to www

if ( $host != 'www.serverok.in' ) {
    return 301 https://serverok.in$request_uri;
}

if ( $host != 'www.serverok.in' ) {

return 301 https://serverok.in$request_uri;

}

Related Posts

Redirect

htaccess

Squid Proxy Server allow connection to all ports

December 5, 2019

by ServerOk with No Comment Linux

By default Squid proxy only allow out going connection to white listed ports that are used commonly. When you visit a site with non standard ports with Squid proxy, it won’t work. To fix this, edit squid configuration file

vi /etc/squid/squid.conf

1	vi /etc/squid/squid.conf

Find

acl SSL_ports port 443
acl Safe_ports port 80          # http
acl Safe_ports port 21          # ftp
acl Safe_ports port 443         # https
acl Safe_ports port 70          # gopher
acl Safe_ports port 210         # wais
acl Safe_ports port 1025-65535  # unregistered ports
acl Safe_ports port 280         # http-mgmt
acl Safe_ports port 488         # gss-http
acl Safe_ports port 591         # filemaker
acl Safe_ports port 777         # multiling http

acl SSL_ports port 443

acl Safe_ports port 80 # http

acl Safe_ports port 21 # ftp

acl Safe_ports port 443 # https

acl Safe_ports port 70 # gopher

acl Safe_ports port 210 # wais

acl Safe_ports port 1025-65535 # unregistered ports

acl Safe_ports port 280 # http-mgmt

acl Safe_ports port 488 # gss-http

acl Safe_ports port 591 # filemaker

acl Safe_ports port 777 # multiling http

Replace with

acl SSL_ports port 1-65535
acl Safe_ports port 1-65535

1 2	acl SSL_ports port 1-65535 acl Safe_ports port 1-65535

Restart squid with

systemctl restart squid

1	systemctl restart squid

Related Posts

Install Squid Proxy Server

proxy

Restart Services in Xampp Linux

November 30, 2019

by ServerOk with No Comment Linux

You can restart services on xampp linux using

/opt/lampp/lampp

1	/opt/lampp/lampp

To restart, use

/opt/lampp/lampp restart

1	/opt/lampp/lampp restart

Here are other available options

root@ip-172-31-36-153:~# /opt/lampp/lampp --help
Usage: lampp <action>

	start         Start XAMPP (Apache, MySQL and eventually others)
	startapache   Start only Apache
	startmysql    Start only MySQL
	startftp      Start only ProFTPD

	stop          Stop XAMPP (Apache, MySQL and eventually others)
	stopapache    Stop only Apache
	stopmysql     Stop only MySQL
	stopftp       Stop only ProFTPD

	reload        Reload XAMPP (Apache, MySQL and eventually others)
	reloadapache  Reload only Apache
	reloadmysql   Reload only MySQL
	reloadftp     Reload only ProFTPD

	restart       Stop and start XAMPP
	security      Check XAMPP's security

	enablessl     Enable SSL support for Apache
	disablessl    Disable SSL support for Apache

	backup        Make backup file of your XAMPP config, log and data files

	oci8          Enable the oci8 extenssion

	panel         Starts graphical XAMPP control panel

root@ip-172-31-36-153:~#

root@ip-172-31-36-153:~# /opt/lampp/lampp --help

Usage: lampp <action>

start Start XAMPP (Apache, MySQL and eventually others)

startapache Start only Apache

startmysql Start only MySQL

startftp Start only ProFTPD

stop Stop XAMPP (Apache, MySQL and eventually others)

stopapache Stop only Apache

stopmysql Stop only MySQL

stopftp Stop only ProFTPD

reload Reload XAMPP (Apache, MySQL and eventually others)

reloadapache Reload only Apache

reloadmysql Reload only MySQL

reloadftp Reload only ProFTPD

restart Stop and start XAMPP

security Check XAMPP's security

enablessl Enable SSL support for Apache

disablessl Disable SSL support for Apache

backup Make backup file of your XAMPP config, log and data files

oci8 Enable the oci8 extenssion

panel Starts graphical XAMPP control panel

root@ip-172-31-36-153:~#

See Auto start XAMPP on Boot