标签：自动 present dhclient centos with item block 导致 inf
CentOS7 阿里云ECS系统重启后，/etc/resolv.conf 会被dhclient 或者NetworkManager还原为默认配置/清空
1. PEERDNS=yes|no 允许|禁止/etc/resolv.conf 重启/更新网络 被覆盖
2. 当开启NetworkManager.service 时, PEERDNS是不生效的，通过设置dns=none解决
3. 阿里云ECS内部服务不要开启NetworkManager, 可能导致网络不可用
https://www.cyberciti.biz/faq/dhclient-etcresolvconf-hooks/
系统初始化时： 1. /etc/resolv.conf template一份 2. 通过ansible的lineinfile 只增加一行PEERDNS=no
- block:
- name: Modify /etc/resolv.conf
template:
src: resolv.conf.j2
dest: /etc/resolv.conf
mode: 0644
owner: root
group: root
- name: Install common operate utils
yum:
name: "{{ item }}"
update_cache: yes
with_items: ["htop", "iftop", "nload", "iptraf", "dstat", "iotop", "screen", "hping3"]
- name: Modify ifcfg-etho to forbid Autoupdate DNS
lineinfile:
dest: /etc/sysconfig/network-scripts/ifcfg-eth0
state: present
line: ‘PEERDNS=no‘
mode: 0644
owner: root
group: root
when: ansible_distribution == "CentOS"
tags: update_dns
标签：自动 present dhclient centos with item block 导致 inf
原文地址：https://www.cnblogs.com/leesirc/p/11577751.html
