09d0409ed4
This patch is adding configuration option to manipulate with kernel option sysctl_net_ipv4_tcp_retries2. More informations about kernel option in [1][2] and RedHat suggestion [3] to set for DBs and HA. [1]: https://pracucci.com/linux-tcp-rto-min-max-and-tcp-retries2.html [2]: https://blog.cloudflare.com/when-tcp-sockets-refuse-to-die/ [3]: https://access.redhat.com/solutions/726753 Closes-Bug: #1917068 Change-Id: Ia0decbbfa4e33b1889b635f8bb1c9094567a2ce6
27 lines
804 B
YAML
27 lines
804 B
YAML
---
|
|
- name: Setting sysctl values
|
|
vars:
|
|
should_set: "{{ item.value != 'KOLLA_UNSET' }}"
|
|
sysctl:
|
|
name: "{{ item.name }}"
|
|
state: "{{ should_set | ternary('present', 'absent') }}"
|
|
value: "{{ should_set | ternary(item.value, omit) }}"
|
|
sysctl_set: "{{ should_set }}"
|
|
sysctl_file: "{{ kolla_sysctl_conf_path }}"
|
|
become: true
|
|
with_items:
|
|
- { name: "net.ipv4.ip_nonlocal_bind", value: 1 }
|
|
- { name: "net.ipv6.ip_nonlocal_bind", value: 1 }
|
|
- { name: "net.ipv4.tcp_retries2", value: "{{ haproxy_host_ipv4_tcp_retries2 }}" }
|
|
- { name: "net.unix.max_dgram_qlen", value: 128 }
|
|
when:
|
|
- set_sysctl | bool
|
|
- item.value != 'KOLLA_SKIP'
|
|
|
|
- name: Load and persist keepalived module
|
|
import_role:
|
|
name: module-load
|
|
vars:
|
|
modules:
|
|
- {'name': ip_vs }
|