一、描述
拿到一批機器，需要做首先是修改ssh端口，防火牆配置，以及limits.conf控制文件描述符，進程數，棧大小等。
二、劇本如下：
---
- hosts: "{{ host }}"
remote_user: "{{ user }}"
gather_facts: false
tasks:
- name: Modify ssh port 69410
lineinfile:
dest: /etc/ssh/{{ item }}
regexp: '^Port 69410'
insertafter: '#Port 22'
line: 'Port 69410'
with_items:
- sshd_config
- ssh_config
tags:
- sshport
- name: Set sysctl file limiits
# pam_limits: domain='*' limit_type=`item`.`limit_type` limit_item=`item`.`limit_item` value=`item`.`value`
pam_limits:
dest: "{{ item.dest }}"
domain: '*'
limit_type: "{{ item.limit_type }}"
limit_item: "{{ item.limit_item }}"
value: "{{ item.value }}"
with_items:
- { dest: '/etc/security/limits.conf',limit_type: 'soft',limit_item: 'nofile', value: '655350' }
- { dest: '/etc/security/limits.conf',limit_type: 'hard',limit_item: 'nofile', value: '655350'}
- { dest: '/etc/security/limits.conf',limit_type: 'soft',limit_item: 'nproc', value: '102400' }
- { dest: '/etc/security/limits.conf',limit_type: 'hard',limit_item: 'nproc', value: '102400' }
- { dest: '/etc/security/limits.conf',limit_type: 'soft',limit_item: 'sigpending', value: '255377' }
- { dest: '/etc/security/limits.conf',limit_type: 'hard',limit_item: 'sigpending', value: '255377' }
- { dest: '/etc/security/limits.d/90-nproc.conf', limit_type: 'soft',limit_item: 'nproc', value: '262144' }
- { dest: '/etc/security/limits.d/90-nproc.conf', limit_type: 'hard',limit_item: 'nproc', value: '262144' }
tags:
- setlimits