Install packages using FreeBSD port.

1. Install postfix

# Options for postfix-2.11.0,1
_OPTIONS_READ=postfix-2.11.0,1
_FILE_COMPLETE_OPTIONS_LIST=BDB CDB INST_BASE LDAP_SASL LMDB MYSQL NIS OPENLDAP PCRE PGSQL SASL2 SPF SQLITE TEST TLS VDA DOVECOT DOVECOT2 SASLKRB5 SASLKMIT
OPTIONS_FILE_SET+=BDB …

In this short tutorial I will show how to check TCP/UDP open port or services in FreeBSD box. For checking open port or services which uses port in FreeBSD simply issue the following commands.

1. check TCP connection

   sockstat -Ptcp
   

2. check UDP connection

   sockstat -Pudp
   

   Combine with grep to search …

DRBD refers to block devices designed as a building block to form high availability cluster. This is done by mirroring a whole block device via an assigned network. DRBD can be understood as network based RAID-1. (DRBD)

Sometimes we have a disk failure on hard drive which contains DRBD backing …

Split Brain in DRBD is a condition where each host think that resource in another host is outdated, thus synchronization won’t be occured. This condition often occurs because of network or power failure which is indicated by these variables:

log: Split-Brain detected, dropping connection …

Hugo uses the excellent go html/template library for its template engine. It is an extremely lightweight engine that provides a very small amount of logic. In our experience that it is just the right amount of logic to be able to create a good static website. If you have used other template systems …

Move static content to static

Jekyll has a rule that any directory not starting with _ will be copied as-is to the _site output. Hugo keeps all static content under static. You should therefore move it all there. With Jekyll, something that looked like

▾ <root>/
    ▾ images/
        logo.png …