Configure RHEL/CentOS client machines Setup Note: Now that the storage nodes are configured, the repo files have to be updated on client nodes to point them at the new internal mirrors. This can be accomplished in a few different ways. Configure RHEL6/RHEL7 clients On RHEL systems the subscription manager has to be disabled subscription-manager config --rhsm.manage_repos=0 Get the Redhat.repo file from internal repo server wget http://el${OS_VER}repo/repo/Redhat.repo -O /etc/yum.repos.d/Redhat.repo Configure CentOS6/CentOS7 clients Get the CentOS-Base.

Setup storage nodes Setup RHEL7 storage node Set hostname (example: el7repo) hostnamectl set-hostname el7repo Start apache and set to start on boot systemctl start httpd.service systemctl enable httpd.service Create base directory structure mkdir -p /var/www/html/repo/Package_Diff Create repo config files (see Setup Note for link to contents) touch /var/www/html/repo/CentOS-Base.repo touch /var/www/html/repo/Epel.repo touch /var/www/html/repo/Redhat.repo chmod 644 /var/www/html/repo/*.repo Setup Note: Remember to copy the content from the appropriate files. Path: /var/www/html/repo/CentOS-Base.repo CentOS-Base.repo Path: /var/www/html/repo/Epel.

Setup storage nodes Setup RHEL6 storage node Set hostname (example: el6repo) vi /etc/sysconfig/network Start apache and set to start on boot service httpd start chkconfig httpd on Create base directory structure mkdir -p /var/www/html/repo/Package_Diff Create repo config files (see Setup Note for link to contents) touch /var/www/html/repo/CentOS-Base.repo touch /var/www/html/repo/Epel.repo touch /var/www/html/repo/Redhat.repo chmod 644 /var/www/html/repo/*.repo Setup Note: Remember to copy the content from the appropriate files. Path: /var/www/html/repo/CentOS-Base.repo CentOS-Base.repo Path: /var/www/html/repo/Epel.repo Epel.

Internal RHEL/CentOS repo for yum Overview The main goal for setting up internal yum repo (or mirror) servers is having more control and consistency over the software deployed within a RHEL/CentOS Linux environment. The process we used prior to using internal repos was much more ad-hoc, causing discrepancies with test server software versions and production server software versions. While a practice of upgrading test servers prior to production servers was in place, trying to manage versions at the endpoint was troublesome and tedious.

Setup Salt Components on CentOS 7 Setup Note: This guide is basically copied from the salt docs https://docs.saltstack.com/en/latest/topics/installation/rhel.html. The only reason for it to exist is to expand on the RHEL/CENTOS 7 post install specifics for adding firewall rules and enabling the service. Import SaltStack GPG-KEY rpm --import https://repo.saltstack.com/yum/redhat/7/x86_64/latest/SALTSTACK-GPG-KEY.pub Setup SaltStack repo file Edit /etc/yum.repos.d/saltstack.repo vi /etc/yum.repos.d/saltstack.repo Insert this text [saltstack-repo] name=SaltStack repo for RHEL/CentOS $releasever baseurl=https://repo.saltstack.com/yum/redhat/$releasever/$basearch/latest enabled=1 gpgcheck=1 gpgkey=https://repo.saltstack.com/yum/redhat/$releasever/$basearch/latest/SALTSTACK-GPG-KEY.pub Install the salt-minion, salt-master, or other Salt components: