Linux : Configuring SSL certificate with Nginx

Setting up SSL certificate with Nginx is quite easy, however slightly differ from the standard configuration since it require that the server certificate and the certificate authority (CA) to be bundled together within a single PEM file. NOTE : See this article if you are looking for the procedure how to generate a certificate key… Read More »

JunOS : How to configure automated configuration backup

For sure, if you are concerned about your network you will make sure that you always have a good backup of your configuration file somewhere. Fortunately, JunOS have a nice built-in backup function through FTP or SFTP. It allow you to do an automated backup at defined time interval and even more, every time you… Read More »

Linux : Bind loading master file domain.tld.hosts: ran out of space

Bind (named) DNS server is failing to reload or restart after modifying a domain TXT record? Have a look at your Bind log files (commonly written to /var/log/messages) and you may find the following entries : named: dns_rdata_fromtext: domain.tld.hosts:0: ran out of space named: zone domain.tld/IN: loading master file domain.tld.hosts: ran out of space named:… Read More »

Linux : How to enable php-imagick module support on CentOS/RHEL 6

PHP imagick module is not a part of the default installation yet. Here is some easy steps to enable php-imagick module on your system. 1. First install the required development and dependency packages : yum install make gcc php-devel php-pear ImageMagick ImageMagick-devel 2. Compile php-imagick module : pecl install imagick 3. Add the extension to php.d as followed… Read More »

Linux : OpenVPN client connection timeout after 24 hours

You probably experienced VPN session disconnection exactly 24 hours after you established the connection. Well, this is an expected behaviour since the OpenVPN Access Server implement a default 24 hours session timeout for user-locked and server-locked profiles. To workaround this limitation, you may set the timeout to a higher value using the following command : /usr/local/openvpn_as/scripts/sacli… Read More »

Linux : Centrify adclient ERROR base.adagent Can’t use default machine password. Please reset computer account in Active Directory.

Whatever you’ve been using Centrify for a month or years on a Linux machine joined to an Active Directory Domain Controller, login using an AD user might suddenly stop work and display the following error message in the system logs (/var/log/message) : adclient[4933]: INFO <bg:ageBindings> base.bind.healing Lost connection to pdc.ad-forest.domain.tld. Running in disconnected mode: KDC refused… Read More »

Windows : Computer cannot be managed

Starting with Windows Server 2008 R2/2012, the fancy remote management feature may return the following error when adding to your centralized Server Manager console : Computer <NAME> cannot be managed. Verify that the network path is correct, the computer is available on the network and that the appropriate Windows Firewall rules are enabled on the… Read More »