best way to add multiple lines to a file.

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1

I would like to add these lines to a file at the end sysctl.conf

net.ipv6.conf.all.disable_ipv6=1

net.ipv4.tcp_no_metrics_save = 1

net.ipv4.tcp_moderate_rcvbuf = 1

net.ipv4.tcp_fin_timeout = 15

net.ipv4.tcp_keepalive_time = 1800

net.ipv4.tcp_keepalive_probes = 4

I am adding these using several lineinfile:

What is the best way to knock it down with one module

2

i would use sysctl module + with_items​

3

I am currently doing this, want a better one :slight_smile:

  • name: Changes to sysctl.conf
    lineinfile:
    dest=/tmp/1
    regexp=“{{ item.regexp }}”
    line=“{{ item.line }}”
    with_items:

  • { regexp: ‘^net.ipv6.conf.all.disable_ipv6’, line: ‘net.ipv6.conf.all.disable_ipv6 = 1’ }

  • { regexp: ‘^net.ipv4.tcp_no_metrics_save’, line: ‘net.ipv4.tcp_no_metrics_save = 1’ }

  • { regexp: ‘^net.ipv4.tcp_moderate_rcvbuf’, line: ‘net.ipv4.tcp_moderate_rcvbuf = 1’ }

  • { regexp: ‘^net.ipv4.tcp_fin_timeout’, line: ‘net.ipv4.tcp_fin_timeout = 15’ }

  • { regexp: ‘^net.ipv4.tcp_keepalive_time’, line: ‘net.ipv4.tcp_keepalive_time = 1800’ }

  • { regexp: ‘^net.ipv4.tcp_keepalive_probes’, line: ‘net.ipv4.tcp_keepalive_probes = 4’ }

4

Hí Darup,

i believe that Brian thougth sysctl module: http://docs.ansible.com/sysctl_module.html

5

Hi there,

I agree it’s the best to use a specific module (sysctl_module) for your specific task,
but here’s the alternative I made: https://galaxy.ansible.com/list#/roles/1475

(the table rendering is broken, see https://github.com/yaegashi/ansible-role-blockinfile instead)

`

  • hosts: all
    sudo: yes
    roles:
  • yaegashi.blockinfile
    tasks:
  • name: Update sysctl.conf
    blockinfile: |
    dest=/etc/sysctl.conf backup=yes
    content=‘net.ipv6.conf.all.disable_ipv6=1
    net.ipv4.tcp_no_metrics_save = 1
    net.ipv4.tcp_moderate_rcvbuf = 1
    net.ipv4.tcp_fin_timeout = 15
    net.ipv4.tcp_keepalive_time = 1800
    net.ipv4.tcp_keepalive_probes = 4’
    notify: Reload sysctl
    handlers:
  • name: Reload sysctl.conf
    shell: sysctl -p

`

2014年8月29日金曜日 3時25分15秒 UTC+9 David Karban:

Hí Darup,

i believe that Brian thougth sysctl module: http://docs.ansible.com/sysctl_module.html

I am currently doing this, want a better one :slight_smile:

  • name: Changes to sysctl.conf
    lineinfile:
    dest=/tmp/1
    regexp=“{{ item.regexp }}”
    line=“{{ item.line }}”
    with_items:

  • { regexp: ‘^net.ipv6.conf.all.disable_ipv6’, line: ‘net.ipv6.conf.all.disable_ipv6 = 1’ }

  • { regexp: ‘^net.ipv4.tcp_no_metrics_save’, line: ‘net.ipv4.tcp_no_metrics_save = 1’ }

  • { regexp: ‘^net.ipv4.tcp_moderate_rcvbuf’, line: ‘net.ipv4.tcp_moderate_rcvbuf = 1’ }

  • { regexp: ‘^net.ipv4.tcp_fin_timeout’, line: ‘net.ipv4.tcp_fin_timeout = 15’ }

  • { regexp: ‘^net.ipv4.tcp_keepalive_time’, line: ‘net.ipv4.tcp_keepalive_time = 1800’ }

  • { regexp: ‘^net.ipv4.tcp_keepalive_probes’, line: ‘net.ipv4.tcp_keepalive_probes = 4’ }

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David Karban
Specialista na správu linuxových serverů
www.karban.eu

Regards,

6

Thanks, I will try that.