Enabling Jumbo Frames on RHEL7 with nmcli

Use the NetworkManager command-line tool to see your connections:

# nmcli connection show --active
NAME UUID TYPE DEVICE
em1 7bb105a5-f663-4e5b-a8aa-fdeb2a16e1a0 802-3-ethernet em1

View the attributes of a single connection:

# nmcli connection show em1
...
802-3-ethernet.mtu: auto

Change the MTU to your new value (in this example, 9000):

# nmcli connection modify em1 802-3-ethernet.mtu 9000

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RHEL7 Core (Minimal Install) vs. Base (Infrastructure Server) Packages

Below is a list of packages installed on RHEL7 using the minimal install (@ Core option in Kickstart).

The additional packages installed by @ Base option in Kickstart are added into the list in bold with the package summary appended.

Topic: 

Installing Jenkins stable on RHEL7 minimal

Install prerequisites:

yum install java-1.8.0-openjdk-headless dejavu-sans-fonts fontconfig

Install Jenkins stable repo:

cd /etc/yum.repos.d/
curl -O http://pkg.jenkins-ci.org/redhat-stable/jenkins.repo
rpm --import https://jenkins-ci.org/redhat/jenkins-ci.org.key

Install Jenkins:

yum install jenkins

Set Jenkins service to start at startup:

systemctl enable jenkins.service

Start Jenkins service:

systemctl start jenkins.service

Topic: 

/usr/bin/ld: cannot find -lz

Problem:

/usr/bin/ld: cannot find -lz

Solution:

yum install zlib-static

Problem:

/usr/bin/ld: cannot find -lpthread

Solution:

yum install glibc-static

Problem:

/usr/bin/ld: cannot find -lstdc++

Solution:

yum install libstdc++-static

If you are using RHEL7, these are in the rhel-x86_64-server-optional-7 channel.

Topic: 

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