Ansible playbook to install list of packages on Redhat or CentOS Linux post OS install.
Here i will show you a sample playbook you can use to install a list of packages in linux.
This is a sample playbook we use to install various packages after OS install.
---
- hosts: all
name: NGELinux KVM post config
gather_facts: yes
become: yes
vars:
packages:
- virt-install
- libvirt
- vmfs-tools
- glibc.i686
- iptables-services
- cloudstack-agent
- monsoon-cloudstack-plugins-agent
- qemu-img-ev
- qemu-kvm-common-ev
- qemu-kvm-ev
- qemu-kvm-tools-ev
tasks:
- name: Check the kernel version is qualified
fail: msg="The host is not built with the NGELinuxKVM ksmeta, please reimage and retry"
failed_when: ansible_kernel != "3.10.0-863.14.8.el7.x86_64"
changed_when: ansible_kernel == "3.10.0-863.14.8.el7.x86_64"
tags:
- kernel
- name: Install additional packages for kvm
yum: name="{{ packages }}" enablerepo="OL7-Optional*,nge-*"
register: yum_install
failed_when: yum_install.rc > 0 and "Cannot open" in yum_install.stderr
changed_when: yum_install.rc == 0
tags:
- packages
- name: update grub config for nested hypervisor
lineinfile: path=/etc/default/grub regexp='^GRUB_CMDLINE_LINUX=\"(.*(?<!kvm-intel.nested=1))\"' line='GRUB_CMDLINE_LINUX="\1 kvm-intel.nested=1"' state=present backrefs=True
tags:
- nestconf
- name: update kvm config for nested hypervisor
lineinfile: path=/etc/modprobe.d/kvm.conf regexp='#options kvm_intel nested=1' line='options kvm_intel nested=1' state=present backrefs=True
tags:
- nestconf
It is not tough to understand the playbook.
We have hosts: “all” to include all hosts mentioned in file, and packages mention all the list of packages we need to install, & tasks mention the list of tasks we want to do.
Please post your questions with parts you fail to understand so that i can post the answers.