4. Modify iptables rules

   Show all iptables rules and include line numbers

   iptables -L INPUT --line-numbers
   

   Replace iptables rule at a specific line number

   iptables -R X INPUT <new rule here>
   

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5. Grow LVM physical volume

   The pvresize command can be used to grow an existing physical volume so long as you grow the parition on the underlying device.

   1. Use fdisk -l /dev/sdc1 to find the start sector of the partition.
   2. Delete existing partition and create a new partition with the same start sector.
   3. Use …

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6. Using ssmtp with FastMail

   #  a config file for sSMTP sendmail.
   
   # The user that gets all mail for userids less than 1000. If blank, address
   # rewriting is disabled.
   Root=roots-mail@example.com
   
   # the smarthost or relay or ...
   Mailhub=smtp.fastmail.com:465
   
   # TLS Config
   UseTLS=YES
   UseSTARTTLS=NO
   
   RewriteDomain=example.com
   
   # The full hostname
   Hostname …

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7. Signing GnuPG keys with caff

   These are my notes on getting caff configured and working in order to send signed keys after the OhioLinuxFest keysigning. All of this was done on a Fedora 24 Workstation using only the standard repositories.

   Installation

   The pgp-tools package provides caff. It can be easily installed with yum. I also …

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8. Configuring ipmi using ipmitool

   Packages and Services

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

   $ yum install OpenIMPI ipmitool
   

   Networking

   Configure a static ip address on the first port. For dynamic configuration set ipsrc to dynamic.

   $ sudo ipmitool lan set 1 ipsrc static
   $ sudo ipmitool lan set 1 ipaddr …

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