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  1. Configuring ipmi using ipmitool

    Packages and Services

    On RHEL7Server the OpenIPMI and ipmitool are necessary to configure and use IPMI.

    $ yum install OpenIMPI ipmitool


    $ sudo ipmitool lan set 1 ipsrc static
    $ sudo ipmitool lan set 1 ipaddr
    $ sudo ipmitool lan set 1 netmask
    $ sudo ipmitool ...
  2. Reinstall the Kernel with yum

    After failing to update the initrd after making changes to the plymouth boot I was unable to boot into the kernel. The yum reinstall fixed this

    $ yum reinstall kernel

    However, this doesn't always work. If yum feels the kernel is already installed and healthy this will return 'nothing to ...

  3. Have dovecot logins update lastlog

    Two changes are needed to have dovecot update lastlog when a user logins with either imap or pop3.

    In /etc/dovecot/cond.d/auth-system.conf.ext enable PAM sessions

    passdb {
      driver = pam
      args = session=yes dovecot

    Then, enable the lastlog module in the dovecot PAM configuration at /etc/pam.d ...

  4. ss for netstat people

    ss is another utility to investigate sockets and is often seen as a replacement for netstat. This posts attempes to give a brief introduction to using ss in place of netstat

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