How To Install Zimbra Mail Server 8.8.8 On Cent OS 7

Zimbra Collaboration Suite (ZCS) is a free and Open Source collaborative platform for email servers. It offers services like LDAP, SMTP, POP and IMAP, webmail client, calendaring, tasks, antivirus and antispam. The main objective of this tutorial is to explain how to install Zimbra mail server / Collaboration Suite Open Source Edition on a CentOS/RHEL 7 […]

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Unable to access Datanodes tab from Namenode UI on HDP 2.5

Short Description: Unable to access Datanodes tab from Namenode UI . When we click on Datanodes tab on Namenode UI, nothing happens. Article ISSUE : When we click on Datanodes tab on Namenode UI, nothing happens. ROOT CAUSE : This is happening because of https://issues.apache.org/jira/browse/HDFS-10888 and https://issues.apache.org/jira/browse/HDFS-9193 which is fixed in Hadoop version 2.8. But HDP […]

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Hướng dẫn cài đặt Redis cluster trên Centos 7.3

II. Cài đặt và cấu hình Redis Cluster 2.1. Mô tả và chuẩn bị hệ thống – Số lượng server cần cài Redis: 5 server 192.168.105.208 192.168.105.209 192.168.105.210 – Các server chạy 2 instance Redis tương ứng với 2 port 30001 và 30002 – Replicate: 1 – Hệ điều hành: Centos 7.3 64bit. – Version […]

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