Archive: Linux

Deployment of Ansible AWX on OpenShift Origin

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Deployment of Ansible AWX on OpenShift Origin Red Hat and Ansible are agreed to creating an open-source project around the Ansible Tower codebases which was named Ansible AWX. The AWX source code is available under the Apache License 2.0. This project is hosted at Github. Ansible is an automation technology for the management of IT […]

OpenShift LDAP Integration

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Openshift LDAP Authentication OpenShift container platform provides support LDAPv3. You can integrate your OpenShift Cluster to use LDAP authentication. That will allow users to log in to OpenShift with their LDAP account. But it will be a single point of failure, meaning that if LDAP server become unavailable then all OpenShift platform requires authentication would […]

OpenShift Software Defined Network

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OpenShift Software Defined Network In this post, I will give a brief introduction to OpenShift Software Defined Network (SDN) concept. Basically anyone with OpenShift background might be interested in this post. SDN encompasses several types of technologies like including functional separation, network virtualization and automation which focus on enabling the network control to become directly […]

Install and Configure GlusterFS Scalable Distributed File System

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GlusterFS is a distributed file system that can manage disk storage resources from multiple servers into a single global namespace. It is a type of distributed replicated network file-system, fully POSIX compliant and supports storage paradigms such as Block Storage and Object Storage. GlusterFs stores the data on stable Linux file-systems like ext4, xfs. So […]

Pulse Secure Client Installation on Linux

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Pulse Secure Client Installation on Linux VPN (Virtual Private Network) is a service that lets you access the restricted area and privately by routing your connection through a VPN server. All VPN solutions provide clients with ability to connect to restricted areas with authentication methods. Pulse Secure is one of the enterprise VPN solution that […]

Configure Squid Proxy To Forward Package To A Parent Proxy

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Squid is an Open Source Unix-based proxy server for the Web supporting HTTP, HTTPS, FTP, and more. It has extensions like web page caching to reduce bandwidth and improve response times. Squid is provided as free, open source software and can be used under the GNU General Public License. Basically, Squid will act as an […]

Using the NMI Watchdog to detect hangs

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NMI watchdog is available for x86 and x86-64 architectures.In order to use the NMI watchdog, kernel must be  support APIC.For  SMP kernel,APIC support has complied in automatically. For Red Hat APIC is always  compiled and  NMI watchdog  is enabled  by  kernel parameter kernel.nmi_watchdog=1.(I/O APIC).Nmi_watchdog=2 parameter (Locall  APIC) uses for  such as create high precision performance profiling. […]

Linux NFS Behind Firewall


Configure  NFS Behind  Firewall NFS service needs  rpcbind,which  dynamically assigns  ports for RPC services. Remote Procedure Call (RPC) is a protocol which one process can used to communicate other server without having to understand  network details. So, running  NFS behind  firwall  is completely related  to RPC services firewall rules.To allow a client to acces  NFS […]