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system.yml
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system.yml
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---
# DNS servers (/etc/resolv.conf)
nameservers: []
# - "8.8.8.8" # example (Google Public DNS)
# - "9.9.9.9" # (Quad9 Public DNS)
# /etc/hosts (optional)
etc_hosts: []
# - "10.128.64.143 pgbackrest.minio.local minio.local s3.eu-west-3.amazonaws.com" # example (MinIO)
# - ""
ntp_enabled: false # or 'true' if you want to install and configure the ntp service
ntp_servers: []
# - "10.128.64.44"
# - "10.128.64.45"
timezone: ""
# timezone: "Etc/UTC"
# timezone: "America/New_York"
# timezone: "Europe/Moscow"
# timezone: "Europe/Berlin"
# Generate locale
# (except RHEL>=8,use glibc-langpack)
locale_gen:
- { language_country: "en_US", encoding: "UTF-8" }
# - { language_country: "ru_RU", encoding: "UTF-8" }
# - { language_country: "de_DE", encoding: "UTF-8" }
# - { language_country: "", encoding: "" }
# Set system locale (LANG,LC_ALL)
locale: "en_US.utf-8"
# Configure swap space (if not already exists)
swap_file_create: true # or 'false'
swap_file_path: /swapfile
swap_file_size_mb: '2048' # change this value for your system
# Kernel parameters
sysctl_set: true # or 'false'
# these parameters for example! Specify kernel options for your system
sysctl_conf:
etcd_cluster: []
consul_instances: []
master: []
replica: []
pgbackrest: []
postgres_cluster:
- { name: "vm.overcommit_memory", value: "2" }
- { name: "vm.swappiness", value: "1" }
- { name: "vm.min_free_kbytes", value: "102400" }
- { name: "vm.dirty_expire_centisecs", value: "1000" }
- { name: "vm.dirty_background_bytes", value: "67108864" }
- { name: "vm.dirty_bytes", value: "536870912" }
# - { name: "vm.nr_hugepages", value: "9510" } # example "9510"=18GB
- { name: "vm.zone_reclaim_mode", value: "0" }
- { name: "kernel.numa_balancing", value: "0" }
- { name: "kernel.sched_autogroup_enabled", value: "0" }
- { name: "net.ipv4.ip_nonlocal_bind", value: "1" }
- { name: "net.ipv4.ip_forward", value: "1" }
- { name: "net.ipv4.ip_local_port_range", value: "10000 65535" }
- { name: "net.core.netdev_max_backlog", value: "10000" }
- { name: "net.ipv4.tcp_max_syn_backlog", value: "8192" }
- { name: "net.core.somaxconn", value: "65535" }
- { name: "net.ipv4.tcp_tw_reuse", value: "1" }
# - { name: "net.netfilter.nf_conntrack_max", value: "1048576" }
# - { name: "kernel.sched_migration_cost_ns", value: "5000000" }
# - { name: "", value: "" }
balancers:
- { name: "net.ipv4.ip_nonlocal_bind", value: "1" }
- { name: "net.ipv4.ip_forward", value: "1" }
- { name: "net.ipv4.ip_local_port_range", value: "10000 65535" }
- { name: "net.core.netdev_max_backlog", value: "10000" }
- { name: "net.ipv4.tcp_max_syn_backlog", value: "8192" }
- { name: "net.core.somaxconn", value: "65535" }
- { name: "net.ipv4.tcp_tw_reuse", value: "1" }
# - { name: "net.netfilter.nf_conntrack_max", value: "1048576" }
# - { name: "", value: "" }
# Transparent Huge Pages
disable_thp: true # or 'false'
# Max open file limit
set_limits: true # or 'false'
limits_user: "postgres"
soft_nofile: 65536
hard_nofile: 200000
# I/O Scheduler (optional)
set_scheduler: false # or 'true'
scheduler:
- { sched: "deadline", nr_requests: "1024", device: "sda" }
# - { sched: "noop" , nr_requests: "1024", device: "sdb" }
# - { sched: "" , nr_requests: "1024", device: "" }
# Non-multiqueue I/O schedulers:
# cfq - for desktop systems and slow SATA drives
# deadline - for SAS drives (recommended for databases)
# noop - for SSD drives
# Multiqueue I/O schedulers (blk-mq):
# mq-deadline - (recommended for databases)
# none - (ideal for fast random I/O devices such as NVMe)
# bfq - (avoid for databases)
# kyber
# SSH Keys (optional)
enable_ssh_key_based_authentication: false # or 'true' for configure SSH Key-Based Authentication
ssh_key_user: "postgres"
ssh_key_state: "present"
ssh_known_hosts: "{{ groups['postgres_cluster'] }}"
# sudo
sudo_users:
- name: "postgres"
nopasswd: "yes" # or "no" to require a password
commands: "ALL"
# - name: "joe" # other user (example)
# nopasswd: "no"
# commands: "/usr/bin/find, /usr/bin/less, /usr/bin/tail, /bin/kill"
# Firewall
firewall_enabled_at_boot: false # or 'true' for configure firewall (iptables)
firewall_allowed_tcp_ports_for:
master: []
replica: []
pgbackrest: []
postgres_cluster:
- "{{ ansible_ssh_port | default(22) }}"
- "{{ postgresql_port }}"
- "{{ pgbouncer_listen_port }}"
- "{{ patroni_restapi_port }}"
- "19999" # Netdata
# - "10050" # Zabbix agent
# - ""
etcd_cluster:
- "{{ ansible_ssh_port | default(22) }}"
- "2379" # ETCD port
- "2380" # ETCD port
# - ""
consul_instances:
- 8300
- 8301
- 8302
- 8500
- 8600
balancers:
- "{{ ansible_ssh_port | default(22) }}"
- "{{ haproxy_listen_port.master }}" # HAProxy (read/write) master
- "{{ haproxy_listen_port.replicas }}" # HAProxy (read only) all replicas
- "{{ haproxy_listen_port.replicas_sync }}" # HAProxy (read only) synchronous replica only
- "{{ haproxy_listen_port.replicas_async }}" # HAProxy (read only) asynchronous replicas only
- "{{ haproxy_listen_port.stats }}" # HAProxy stats
# - ""
firewall_additional_rules_for:
master: []
replica: []
postgres_cluster: []
pgbackrest: []
etcd_cluster: []
consul_instances: []
balancers:
- "iptables -p vrrp -A INPUT -j ACCEPT" # Keepalived (vrrp)
- "iptables -p vrrp -A OUTPUT -j ACCEPT" # Keepalived (vrrp)
# disable firewalld (installed by default on RHEL/CentOS) or ufw (installed by default on Ubuntu)
firewall_disable_firewalld: true
firewall_disable_ufw: true
# (optional) - Fetch files from the server in the "master" group. These files can later be copied to all servers.
fetch_files_from_master: []
# - { src: "/etc/ssl/certs/ssl-cert-snakeoil.pem", dest: "files/ssl-cert-snakeoil.pem" }
# - { src: "/etc/ssl/private/ssl-cert-snakeoil.key", dest: "files/ssl-cert-snakeoil.key" }
# - { src: "/path/to/myfile", dest: "files/myfile" }
# (optional) - Copy this files to all servers in the cluster ("master" and "replica" groups)
copy_files_to_all_server: []
# - { src: "files/ssl-cert-snakeoil.pem", dest: "/etc/ssl/certs/ssl-cert-snakeoil.pem", owner: "postgres", group: "postgres", mode: "0644" }
# - { src: "files/ssl-cert-snakeoil.key", dest: "/etc/ssl/private/ssl-cert-snakeoil.key", owner: "postgres", group: "postgres", mode: "0600" }
# - { src: "files/myfile", dest: "/path/to/myfile", owner: "postgres", group: "postgres", mode: "0640" }
# System cron jobs
cron_jobs: []
# - name: "Example Job one"
# user: "postgres"
# file: /etc/cron.d/example_job_one
# minute: "00"
# hour: "1"
# day: "*"
# month: "*"
# weekday: "*"
# job: "echo 'example job one command'"
# - name: "Example Job two"
# user: "postgres"
# file: /etc/cron.d/example_job_two
# minute: "00"
# hour: "2"
# day: "*"
# month: "*"
# weekday: "*"
# job: "echo 'example job two command'"
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