. /infra.yml

. /infra.yml --tags=repo

. /infra.yml --tags=repo -e repo_rebuild=true # Force a local source to be recreated
. /infra.yml --tags=prometheus_reload # Reload Prometheus configuration
. /infra.yml --tags=nginx_haproxy # Regenerate the Nginx Haproxy index page
. /infra.yml --tags=prometheus_targets,prometheus_reload # Regenerate the Prometheus static monitoring object file and apply

./infra.yml --list-tasks

. /pgsql.yml # Execute the database cluster initialization operation on all the machines in the manifest (danger!)
. /pgsql.yml -l pg-test # Perform database cluster initialization on the machines under the pg-test manifest (recommended!)
. /pgsql.yml -l pg-meta,pg-test # Initialize both pg-meta and pg-test clusters at the same time
. /pgsql.yml -l 10.10.10.11 # Initialize the database instance on the machine 10.10.10.11

./pgsql.yml --tags=service

./pgsql.yml --tags=infra        # 完成基础设施的初始化，包括机器节点初始化与DCS部署
./pgsql.yml --tags=node         # 完成机器节点的初始化
./pgsql.yml --tags=dcs          # 完成DCS：consul/etcd的初始化
./pgsql.yml --tags=dcs -e dcs_exists_action # 完成consul/etcd的初始化，抹除已有的consul agent

./pgsql.yml --tags=pgsql        # 完成数据库与监控的部署
./pgsql.yml --tags=postgres     # 完成数据库部署
./pgsql.yml --tags=monitor      # 完成监控的部署

./pgsql.yml --tags=service       # 完成负载均衡的部署，包括Haproxy与VIP
./pgsql.yml --tags=haproxy_config,haproxy_reload  # 修改Haproxy配置并应用。

#!/usr/bin/env ansible-playbook
---
#==============================================================#
# File      :   pgsql.yml
# Mtime     :   2020-05-12
# Mtime     :   2021-03-15
# Desc      :   initialize pigsty cluster
# Path      :   pgsql.yml
# Copyright (C) 2018-2021 Ruohang Feng
#==============================================================#


#------------------------------------------------------------------------------
# init node and database
#------------------------------------------------------------------------------
- name: Pgsql Initialization
  become: yes
  hosts: all
  gather_facts: no
  roles:

    - role: node                            # init node
      tags: [infra, node]

    - role: consul                          # init consul
      tags: [infra, dcs]

    - role: postgres                        # init postgres
      tags: [pgsql, postgres]

    - role: monitor                         # init monitor system
      tags: [pgsql, monitor]

    - role: service                         # init service
      tags: [service]

...

./pgsql.yml --list-tasks

. /sandbox.yml

#------------------------------------------------------------------------------
# init local yum repo on meta node
#------------------------------------------------------------------------------
- name: Init local repo
  become: yes
  hosts: meta
  gather_facts: no
  tags: repo
  roles:
    - repo
#------------------------------------------------------------------------------
# provision all nodes
#------------------------------------------------------------------------------
# node provision depends on existing repo on meta node
- name: Provision Node
  become: yes
  hosts: all
  gather_facts: no
  tags: node
  roles:
    - node
#------------------------------------------------------------------------------
# init meta service on meta node
#------------------------------------------------------------------------------
# meta provision depends on node provision. You'll have to provision node on meta node
# then provision meta infrastructure on meta node
- name: Init meta service
  become: yes
  hosts: meta
  gather_facts: no
  tags: meta
  roles:
    - role: ca
      tags: ca
    - role: nameserver
      tags: nameserver
    - role: nginx
      tags: nginx
    - role: prometheus
      tags: prometheus
    - role: grafana
      tags: grafana
#------------------------------------------------------------------------------
# init dcs on nodes
#------------------------------------------------------------------------------
# typically you'll have to bootstrap dcs on meta node first (or use external dcs)
# but pigsty allows you to setup server and agent at the same time.
- name: Init dcs
  become: yes
  hosts: all            # provision all nodes or just meta nodes
  gather_facts: no
  roles:
    - role: consul
      tags: dcs
#------------------------------------------------------------------------------
# create or recreate postgres database clusters
#------------------------------------------------------------------------------
- name: Init database cluster
  become: yes
  hosts: all
  gather_facts: false

  roles:
    - role: postgres                        # init postgres
      tags: postgres

    - role: monitor                         # init monitor system
      tags: monitor

    - role: haproxy                         # init haproxy
      tags: haproxy

    - role: vip                             # init vip-manager
      tags: vip

./sandbox.yml --list-tasks

playbook: ./sandbox.yml

  play #1 (meta): Init local repo	TAGS: [repo]
    tasks:
      repo : Create local repo directory	TAGS: [repo, repo_dir]
      repo : Backup & remove existing repos	TAGS: [repo, repo_upstream]
      repo : Add required upstream repos	TAGS: [repo, repo_upstream]
      repo : Check repo pkgs cache exists	TAGS: [repo, repo_prepare]
      repo : Set fact whether repo_exists	TAGS: [repo, repo_prepare]
      repo : Move upstream repo to backup	TAGS: [repo, repo_prepare]
      repo : Add local file system repos	TAGS: [repo, repo_prepare]
      repo : Remake yum cache if not exists	TAGS: [repo, repo_prepare]
      repo : Install repo bootstrap packages	TAGS: [repo, repo_boot]
      repo : Render repo nginx server files	TAGS: [repo, repo_nginx]
      repo : Disable selinux for repo server	TAGS: [repo, repo_nginx]
      repo : Launch repo nginx server	TAGS: [repo, repo_nginx]
      repo : Waits repo server online	TAGS: [repo, repo_nginx]
      repo : Download web url packages	TAGS: [repo, repo_download]
      repo : Download repo packages	TAGS: [repo, repo_download]
      repo : Download repo pkg deps	TAGS: [repo, repo_download]
      repo : Create local repo index	TAGS: [repo, repo_download]
      repo : Copy bootstrap scripts	TAGS: [repo, repo_download, repo_script]
      repo : Mark repo cache as valid	TAGS: [repo, repo_download]

  play #2 (all): Provision Node	TAGS: [node]
    tasks:
      node : Update node hostname	TAGS: [node, node_name]
      node : Add new hostname to /etc/hosts	TAGS: [node, node_name]
      node : Write static dns records	TAGS: [node, node_dns]
      node : Get old nameservers	TAGS: [node, node_resolv]
      node : Truncate resolv file	TAGS: [node, node_resolv]
      node : Write resolv options	TAGS: [node, node_resolv]
      node : Add new nameservers	TAGS: [node, node_resolv]
      node : Append old nameservers	TAGS: [node, node_resolv]
      node : Node configure disable firewall	TAGS: [node, node_firewall]
      node : Node disable selinux by default	TAGS: [node, node_firewall]
      node : Backup existing repos	TAGS: [node, node_repo]
      node : Install upstream repo	TAGS: [node, node_repo]
      node : Install local repo	TAGS: [node, node_repo]
      node : Install node basic packages	TAGS: [node, node_pkgs]
      node : Install node extra packages	TAGS: [node, node_pkgs]
      node : Install meta specific packages	TAGS: [node, node_pkgs]
      node : Install node basic packages	TAGS: [node, node_pkgs]
      node : Install node extra packages	TAGS: [node, node_pkgs]
      node : Install meta specific packages	TAGS: [node, node_pkgs]
      node : Node configure disable numa	TAGS: [node, node_feature]
      node : Node configure disable swap	TAGS: [node, node_feature]
      node : Node configure unmount swap	TAGS: [node, node_feature]
      node : Node setup static network	TAGS: [node, node_feature]
      node : Node configure disable firewall	TAGS: [node, node_feature]
      node : Node configure disk prefetch	TAGS: [node, node_feature]
      node : Enable linux kernel modules	TAGS: [node, node_kernel]
      node : Enable kernel module on reboot	TAGS: [node, node_kernel]
      node : Get config parameter page count	TAGS: [node, node_tuned]
      node : Get config parameter page size	TAGS: [node, node_tuned]
      node : Tune shmmax and shmall via mem	TAGS: [node, node_tuned]
      node : Create tuned profiles	TAGS: [node, node_tuned]
      node : Render tuned profiles	TAGS: [node, node_tuned]
      node : Active tuned profile	TAGS: [node, node_tuned]
      node : Change additional sysctl params	TAGS: [node, node_tuned]
      node : Copy default user bash profile	TAGS: [node, node_profile]
      node : Setup node default pam ulimits	TAGS: [node, node_ulimit]
      node : Create os user group admin	TAGS: [node, node_admin]
      node : Create os user admin	TAGS: [node, node_admin]
      node : Grant admin group nopass sudo	TAGS: [node, node_admin]
      node : Add no host checking to ssh config	TAGS: [node, node_admin]
      node : Add admin ssh no host checking	TAGS: [node, node_admin]
      node : Fetch all admin public keys	TAGS: [node, node_admin]
      node : Exchange all admin ssh keys	TAGS: [node, node_admin]
      node : Install public keys	TAGS: [node, node_admin]
      node : Install ntp package	TAGS: [node, ntp_install]
      node : Install chrony package	TAGS: [node, ntp_install]
      node : Setup default node timezone	TAGS: [node, ntp_config]
      node : Copy the ntp.conf file	TAGS: [node, ntp_config]
      node : Copy the chrony.conf template	TAGS: [node, ntp_config]
      node : Launch ntpd service	TAGS: [node, ntp_launch]
      node : Launch chronyd service	TAGS: [node, ntp_launch]

  play #3 (meta): Init meta service	TAGS: [meta]
    tasks:
      ca : Create local ca directory	TAGS: [ca, ca_dir, meta]
      ca : Copy ca cert from local files	TAGS: [ca, ca_copy, meta]
      ca : Check ca key cert exists	TAGS: [ca, ca_create, meta]
      ca : Create self-signed CA key-cert	TAGS: [ca, ca_create, meta]
      nameserver : Make sure dnsmasq package installed	TAGS: [meta, nameserver]
      nameserver : Copy dnsmasq /etc/dnsmasq.d/config	TAGS: [meta, nameserver]
      nameserver : Add dynamic dns records to meta	TAGS: [meta, nameserver]
      nameserver : Launch meta dnsmasq service	TAGS: [meta, nameserver]
      nameserver : Wait for meta dnsmasq online	TAGS: [meta, nameserver]
      nameserver : Register consul dnsmasq service	TAGS: [meta, nameserver]
      nameserver : Reload consul	TAGS: [meta, nameserver]
      nginx : Make sure nginx package installed	TAGS: [meta, nginx, nginx_install]
      nginx : Create local html directory	TAGS: [meta, nginx, nginx_dir]
      nginx : Update default nginx index page	TAGS: [meta, nginx, nginx_dir]
      nginx : Copy nginx default config	TAGS: [meta, nginx, nginx_config]
      nginx : Copy nginx upstream conf	TAGS: [meta, nginx, nginx_config]
      nginx : Fetch haproxy facts	TAGS: [meta, nginx, nginx_config, nginx_haproxy]
      nginx : Templating /etc/nginx/haproxy.conf	TAGS: [meta, nginx, nginx_config, nginx_haproxy]
      nginx : Templating haproxy.html	TAGS: [meta, nginx, nginx_config, nginx_haproxy]
      nginx : Launch nginx server	TAGS: [meta, nginx, nginx_reload]
      nginx : Restart meta nginx service	TAGS: [meta, nginx, nginx_launch]
      nginx : Wait for nginx service online	TAGS: [meta, nginx, nginx_launch]
      nginx : Make sure nginx exporter installed	TAGS: [meta, nginx, nginx_exporter]
      nginx : Config nginx_exporter options	TAGS: [meta, nginx, nginx_exporter]
      nginx : Restart nginx_exporter service	TAGS: [meta, nginx, nginx_exporter]
      nginx : Wait for nginx exporter online	TAGS: [meta, nginx, nginx_exporter]
      nginx : Register cosnul nginx service	TAGS: [meta, nginx, nginx_register]
      nginx : Register consul nginx-exporter service	TAGS: [meta, nginx, nginx_register]
      nginx : Reload consul	TAGS: [meta, nginx, nginx_register]
      prometheus : Install prometheus and alertmanager	TAGS: [meta, prometheus, prometheus_install]
      prometheus : Wipe out prometheus config dir	TAGS: [meta, prometheus, prometheus_clean]
      prometheus : Wipe out existing prometheus data	TAGS: [meta, prometheus, prometheus_clean]
      prometheus : Create postgres directory structure	TAGS: [meta, prometheus, prometheus_config]
      prometheus : Copy prometheus bin scripts	TAGS: [meta, prometheus, prometheus_config]
      prometheus : Copy prometheus rules scripts	TAGS: [meta, prometheus, prometheus_config]
      prometheus : Copy altermanager config	TAGS: [meta, prometheus, prometheus_config]
      prometheus : Render prometheus config	TAGS: [meta, prometheus, prometheus_config]
      prometheus : Config /etc/prometheus opts	TAGS: [meta, prometheus, prometheus_config]
      prometheus : Fetch prometheus static monitoring targets	TAGS: [meta, prometheus, prometheus_config, prometheus_targets]
      prometheus : Render prometheus static targets	TAGS: [meta, prometheus, prometheus_config, prometheus_targets]
      prometheus : Launch prometheus service	TAGS: [meta, prometheus, prometheus_launch]
      prometheus : Launch alertmanager service	TAGS: [meta, prometheus, prometheus_launch]
      prometheus : Wait for prometheus online	TAGS: [meta, prometheus, prometheus_launch]
      prometheus : Wait for alertmanager online	TAGS: [meta, prometheus, prometheus_launch]
      prometheus : Reload prometheus service	TAGS: [meta, prometheus, prometheus_reload]
      prometheus : Copy prometheus service definition	TAGS: [meta, prometheus, prometheus_register]
      prometheus : Copy alertmanager service definition	TAGS: [meta, prometheus, prometheus_register]
      prometheus : Reload consul to register prometheus	TAGS: [meta, prometheus, prometheus_register]
      grafana : Make sure grafana is installed	TAGS: [grafana, grafana_install, meta]
      grafana : Check grafana plugin cache exists	TAGS: [grafana, grafana_plugin, meta]
      grafana : Provision grafana plugins via cache	TAGS: [grafana, grafana_plugin, meta]
      grafana : Download grafana plugins from web	TAGS: [grafana, grafana_plugin, meta]
      grafana : Download grafana plugins from web	TAGS: [grafana, grafana_plugin, meta]
      grafana : Create grafana plugins cache	TAGS: [grafana, grafana_plugin, meta]
      grafana : Copy /etc/grafana/grafana.ini	TAGS: [grafana, grafana_config, meta]
      grafana : Remove grafana provision dir	TAGS: [grafana, grafana_config, meta]
      grafana : Copy provisioning content	TAGS: [grafana, grafana_config, meta]
      grafana : Copy pigsty dashboards	TAGS: [grafana, grafana_config, meta]
      grafana : Copy pigsty icon image	TAGS: [grafana, grafana_config, meta]
      grafana : Replace grafana icon with pigsty	TAGS: [grafana, grafana_config, grafana_customize, meta]
      grafana : Launch grafana service	TAGS: [grafana, grafana_launch, meta]
      grafana : Wait for grafana online	TAGS: [grafana, grafana_launch, meta]
      grafana : Update grafana default preferences	TAGS: [grafana, grafana_provision, meta]
      grafana : Register consul grafana service	TAGS: [grafana, grafana_register, meta]
      grafana : Reload consul	TAGS: [grafana, grafana_register, meta]

  play #4 (all): Init dcs	TAGS: []
    tasks:
      consul : Check for existing consul	TAGS: [consul_check, dcs]
      consul : Consul exists flag fact set	TAGS: [consul_check, dcs]
      consul : Abort due to consul exists	TAGS: [consul_check, dcs]
      consul : Clean existing consul instance	TAGS: [consul_clean, dcs]
      consul : Stop any running consul instance	TAGS: [consul_clean, dcs]
      consul : Remove existing consul dir	TAGS: [consul_clean, dcs]
      consul : Recreate consul dir	TAGS: [consul_clean, dcs]
      consul : Make sure consul is installed	TAGS: [consul_install, dcs]
      consul : Make sure consul dir exists	TAGS: [consul_config, dcs]
      consul : Get dcs server node names	TAGS: [consul_config, dcs]
      consul : Get dcs node name from var	TAGS: [consul_config, dcs]
      consul : Get dcs node name from var	TAGS: [consul_config, dcs]
      consul : Fetch hostname as dcs node name	TAGS: [consul_config, dcs]
      consul : Get dcs name from hostname	TAGS: [consul_config, dcs]
      consul : Copy /etc/consul.d/consul.json	TAGS: [consul_config, dcs]
      consul : Copy consul agent service	TAGS: [consul_config, dcs]
      consul : Get dcs bootstrap expect quroum	TAGS: [consul_server, dcs]
      consul : Copy consul server service unit	TAGS: [consul_server, dcs]
      consul : Launch consul server service	TAGS: [consul_server, dcs]
      consul : Wait for consul server online	TAGS: [consul_server, dcs]
      consul : Launch consul agent service	TAGS: [consul_agent, dcs]
      consul : Wait for consul agent online	TAGS: [consul_agent, dcs]

  play #5 (all): Init database cluster	TAGS: []
    tasks:
      postgres : Create os group postgres	TAGS: [instal, pg_dbsu, postgres]
      postgres : Make sure dcs group exists	TAGS: [instal, pg_dbsu, postgres]
      postgres : Create dbsu {{ pg_dbsu }}	TAGS: [instal, pg_dbsu, postgres]
      postgres : Grant dbsu nopass sudo	TAGS: [instal, pg_dbsu, postgres]
      postgres : Grant dbsu all sudo	TAGS: [instal, pg_dbsu, postgres]
      postgres : Grant dbsu limited sudo	TAGS: [instal, pg_dbsu, postgres]
      postgres : Config patroni watchdog support	TAGS: [instal, pg_dbsu, postgres]
      postgres : Add dbsu ssh no host checking	TAGS: [instal, pg_dbsu, postgres]
      postgres : Fetch dbsu public keys	TAGS: [instal, pg_dbsu, postgres]
      postgres : Exchange dbsu ssh keys	TAGS: [instal, pg_dbsu, postgres]
      postgres : Install offical pgdg yum repo	TAGS: [instal, pg_install, postgres]
      postgres : Install pg packages	TAGS: [instal, pg_install, postgres]
      postgres : Install pg extensions	TAGS: [instal, pg_install, postgres]
      postgres : Link /usr/pgsql to current version	TAGS: [instal, pg_install, postgres]
      postgres : Add pg bin dir to profile path	TAGS: [instal, pg_install, postgres]
      postgres : Fix directory ownership	TAGS: [instal, pg_install, postgres]
      postgres : Remove default postgres service	TAGS: [instal, pg_install, postgres]
      postgres : Check necessary variables exists	TAGS: [always, pg_preflight, postgres, preflight]
      postgres : Fetch variables via pg_cluster	TAGS: [always, pg_preflight, postgres, preflight]
      postgres : Set cluster basic facts for hosts	TAGS: [always, pg_preflight, postgres, preflight]
      postgres : Assert cluster primary singleton	TAGS: [always, pg_preflight, postgres, preflight]
      postgres : Setup cluster primary ip address	TAGS: [always, pg_preflight, postgres, preflight]
      postgres : Setup repl upstream for primary	TAGS: [always, pg_preflight, postgres, preflight]
      postgres : Setup repl upstream for replicas	TAGS: [always, pg_preflight, postgres, preflight]
      postgres : Debug print instance summary	TAGS: [always, pg_preflight, postgres, preflight]
      postgres : Check for existing postgres instance	TAGS: [pg_check, postgres, prepare]
      postgres : Set fact whether pg port is open	TAGS: [pg_check, postgres, prepare]
      postgres : Abort due to existing postgres instance	TAGS: [pg_check, postgres, prepare]
      postgres : Clean existing postgres instance	TAGS: [pg_check, postgres, prepare]
      postgres : Shutdown existing postgres service	TAGS: [pg_clean, postgres, prepare]
      postgres : Remove registerd consul service	TAGS: [pg_clean, postgres, prepare]
      postgres : Remove postgres metadata in consul	TAGS: [pg_clean, postgres, prepare]
      postgres : Remove existing postgres data	TAGS: [pg_clean, postgres, prepare]
      postgres : Make sure main and backup dir exists	TAGS: [pg_dir, postgres, prepare]
      postgres : Create postgres directory structure	TAGS: [pg_dir, postgres, prepare]
      postgres : Create pgbouncer directory structure	TAGS: [pg_dir, postgres, prepare]
      postgres : Create links from pgbkup to pgroot	TAGS: [pg_dir, postgres, prepare]
      postgres : Create links from current cluster	TAGS: [pg_dir, postgres, prepare]
      postgres : Copy pg_cluster to /pg/meta/cluster	TAGS: [pg_meta, postgres, prepare]
      postgres : Copy pg_version to /pg/meta/version	TAGS: [pg_meta, postgres, prepare]
      postgres : Copy pg_instance to /pg/meta/instance	TAGS: [pg_meta, postgres, prepare]
      postgres : Copy pg_seq to /pg/meta/sequence	TAGS: [pg_meta, postgres, prepare]
      postgres : Copy pg_role to /pg/meta/role	TAGS: [pg_meta, postgres, prepare]
      postgres : Copy postgres scripts to /pg/bin/	TAGS: [pg_scripts, postgres, prepare]
      postgres : Copy alias profile to /etc/profile.d	TAGS: [pg_scripts, postgres, prepare]
      postgres : Copy psqlrc to postgres home	TAGS: [pg_scripts, postgres, prepare]
      postgres : Setup hostname to pg instance name	TAGS: [pg_hostname, postgres, prepare]
      postgres : Copy consul node-meta definition	TAGS: [pg_nodemeta, postgres, prepare]
      postgres : Restart consul to load new node-meta	TAGS: [pg_nodemeta, postgres, prepare]
      postgres : Config patroni watchdog support	TAGS: [pg_watchdog, postgres, prepare]
      postgres : Get config parameter page count	TAGS: [pg_config, postgres]
      postgres : Get config parameter page size	TAGS: [pg_config, postgres]
      postgres : Tune shared buffer and work mem	TAGS: [pg_config, postgres]
      postgres : Hanlde small size mem occasion	TAGS: [pg_config, postgres]
      postgres : Calculate postgres mem params	TAGS: [pg_config, postgres]
      postgres : create patroni config dir	TAGS: [pg_config, postgres]
      postgres : use predefined patroni template	TAGS: [pg_config, postgres]
      postgres : Render default /pg/conf/patroni.yml	TAGS: [pg_config, postgres]
      postgres : Link /pg/conf/patroni to /pg/bin/	TAGS: [pg_config, postgres]
      postgres : Link /pg/bin/patroni.yml to /etc/patroni/	TAGS: [pg_config, postgres]
      postgres : Config patroni watchdog support	TAGS: [pg_config, postgres]
      postgres : create patroni systemd drop-in dir	TAGS: [pg_config, postgres]
      postgres : Copy postgres systemd service file	TAGS: [pg_config, postgres]
      postgres : create patroni systemd drop-in file	TAGS: [pg_config, postgres]
      postgres : Render default initdb scripts	TAGS: [pg_config, postgres]
      postgres : Launch patroni on primary instance	TAGS: [pg_primary, postgres]
      postgres : Wait for patroni primary online	TAGS: [pg_primary, postgres]
      postgres : Wait for postgres primary online	TAGS: [pg_primary, postgres]
      postgres : Check primary postgres service ready	TAGS: [pg_primary, postgres]
      postgres : Check replication connectivity to primary	TAGS: [pg_primary, postgres]
      postgres : Render default pg-init scripts	TAGS: [pg_init, pg_init_config, postgres]
      postgres : Render template init script	TAGS: [pg_init, pg_init_config, postgres]
      postgres : Execute initialization scripts	TAGS: [pg_init, postgres]
      postgres : Check primary instance ready	TAGS: [pg_init, postgres]
      postgres : Add dbsu password to pgpass if exists	TAGS: [pg_pass, postgres]
      postgres : Add system user to pgpass	TAGS: [pg_pass, postgres]
      postgres : Check replication connectivity to primary	TAGS: [pg_replica, postgres]
      postgres : Launch patroni on replica instances	TAGS: [pg_replica, postgres]
      postgres : Wait for patroni replica online	TAGS: [pg_replica, postgres]
      postgres : Wait for postgres replica online	TAGS: [pg_replica, postgres]
      postgres : Check replica postgres service ready	TAGS: [pg_replica, postgres]
      postgres : Render hba rules	TAGS: [pg_hba, postgres]
      postgres : Reload hba rules	TAGS: [pg_hba, postgres]
      postgres : Pause patroni	TAGS: [pg_patroni, postgres]
      postgres : Stop patroni on replica instance	TAGS: [pg_patroni, postgres]
      postgres : Stop patroni on primary instance	TAGS: [pg_patroni, postgres]
      postgres : Launch raw postgres on primary	TAGS: [pg_patroni, postgres]
      postgres : Launch raw postgres on primary	TAGS: [pg_patroni, postgres]
      postgres : Wait for postgres online	TAGS: [pg_patroni, postgres]
      postgres : Check pgbouncer is installed	TAGS: [pgbouncer, pgbouncer_check, postgres]
      postgres : Stop existing pgbouncer service	TAGS: [pgbouncer, pgbouncer_clean, postgres]
      postgres : Remove existing pgbouncer dirs	TAGS: [pgbouncer, pgbouncer_clean, postgres]
      postgres : Recreate dirs with owner postgres	TAGS: [pgbouncer, pgbouncer_clean, postgres]
      postgres : Copy /etc/pgbouncer/pgbouncer.ini	TAGS: [pgbouncer, pgbouncer_config, pgbouncer_ini, postgres]
      postgres : Copy /etc/pgbouncer/pgb_hba.conf	TAGS: [pgbouncer, pgbouncer_config, pgbouncer_hba, postgres]
      postgres : Touch userlist and database list	TAGS: [pgbouncer, pgbouncer_config, postgres]
      postgres : Add default users to pgbouncer	TAGS: [pgbouncer, pgbouncer_config, postgres]
      postgres : Copy pgbouncer systemd service	TAGS: [pgbouncer, pgbouncer_launch, postgres]
      postgres : Launch pgbouncer pool service	TAGS: [pgbouncer, pgbouncer_launch, postgres]
      postgres : Wait for pgbouncer service online	TAGS: [pgbouncer, pgbouncer_launch, postgres]
      postgres : Check pgbouncer service is ready	TAGS: [pgbouncer, pgbouncer_launch, postgres]
      postgres : Render business init script	TAGS: [business, pg_biz_config, pg_biz_init, postgres]
      postgres : Render database baseline sql	TAGS: [business, pg_biz_config, pg_biz_init, postgres]
      postgres : Execute business init script	TAGS: [business, pg_biz_init, postgres]
      postgres : Execute database baseline sql	TAGS: [business, pg_biz_init, postgres]
      postgres : Add pgbouncer busniess users	TAGS: [business, pg_biz_pgbouncer, postgres]
      postgres : Add pgbouncer busniess database	TAGS: [business, pg_biz_pgbouncer, postgres]
      postgres : Restart pgbouncer	TAGS: [business, pg_biz_pgbouncer, postgres]
      postgres : Copy pg service definition to consul	TAGS: [pg_register, postgres, register]
      postgres : Reload postgres consul service	TAGS: [pg_register, postgres, register]
      postgres : Render grafana datasource definition	TAGS: [pg_grafana, postgres, register]
      postgres : Register datasource to grafana	TAGS: [pg_grafana, postgres, register]
      monitor : Create /etc/pg_exporter conf dir	TAGS: [monitor, pg_exporter]
      monitor : Copy default pg_exporter.yaml	TAGS: [monitor, pg_exporter]
      monitor : Config /etc/default/pg_exporter	TAGS: [monitor, pg_exporter]
      monitor : Copy pg_exporter binary	TAGS: [monitor, pg_exporter, pg_exporter_binary]
      monitor : Config pg_exporter service unit	TAGS: [monitor, pg_exporter]
      monitor : Launch pg_exporter systemd service	TAGS: [monitor, pg_exporter]
      monitor : Wait for pg_exporter service online	TAGS: [monitor, pg_exporter]
      monitor : Register pg-exporter consul service	TAGS: [monitor, pg_exporter_register]
      monitor : Reload pg-exporter consul service	TAGS: [monitor, pg_exporter_register]
      monitor : Config pgbouncer_exporter opts	TAGS: [monitor, pgbouncer_exporter]
      monitor : Config pgbouncer_exporter service	TAGS: [monitor, pgbouncer_exporter]
      monitor : Launch pgbouncer_exporter service	TAGS: [monitor, pgbouncer_exporter]
      monitor : Wait for pgbouncer_exporter online	TAGS: [monitor, pgbouncer_exporter]
      monitor : Register pgb-exporter consul service	TAGS: [monitor, node_exporter_register]
      monitor : Reload pgb-exporter consul service	TAGS: [monitor, node_exporter_register]
      monitor : Copy node_exporter binary	TAGS: [monitor, node_exporter, node_exporter_binary]
      monitor : Copy node_exporter systemd service	TAGS: [monitor, node_exporter]
      monitor : Config default node_exporter options	TAGS: [monitor, node_exporter]
      monitor : Launch node_exporter service unit	TAGS: [monitor, node_exporter]
      monitor : Wait for node_exporter online	TAGS: [monitor, node_exporter]
      monitor : Register node-exporter service to consul	TAGS: [monitor, node_exporter_register]
      monitor : Reload node-exporter consul service	TAGS: [monitor, node_exporter_register]
      haproxy : Make sure haproxy is installed	TAGS: [haproxy, haproxy_install]
      haproxy : Create haproxy directory	TAGS: [haproxy, haproxy_install]
      haproxy : Copy haproxy systemd service file	TAGS: [haproxy, haproxy_install, haproxy_unit]
      haproxy : Fetch postgres cluster memberships	TAGS: [haproxy, haproxy_config]
      haproxy : Templating /etc/haproxy/haproxy.cfg	TAGS: [haproxy, haproxy_config]
      haproxy : Launch haproxy load balancer service	TAGS: [haproxy, haproxy_launch, haproxy_restart]
      haproxy : Wait for haproxy load balancer online	TAGS: [haproxy, haproxy_launch]
      haproxy : Reload haproxy load balancer service	TAGS: [haproxy, haproxy_reload]
      haproxy : Copy haproxy service definition	TAGS: [haproxy, haproxy_register]
      haproxy : Reload haproxy consul service	TAGS: [haproxy, haproxy_register]
      vip : Templating /etc/default/vip-manager.yml	TAGS: [vip]
      vip : create vip-manager. systemd drop-in dir	TAGS: [vip]
      vip : create vip-manager systemd drop-in file	TAGS: [vip]
      vip : Launch vip-manager	TAGS: [vip]

./pgsql-remove.yml -l pg-test  # 下线在 pg-test 集群
./pgsql-remove.yml -l pg-test  -l 10.10.10.13 # 下线在 pg-test 集群中的一个实例

#!/usr/bin/env ansible-playbook
---
#==============================================================#
# File      :   pgsql-remove.yml
# Mtime     :   2020-05-12
# Mtime     :   2021-03-15
# Desc      :   remove postgres & consul services
# Path      :   pgsql-remove.yml
# Copyright (C) 2018-2021 Ruohang Feng
#==============================================================#

# this playbook aims at removing postgres & consul & related service
# from # existing instances. So that the node can be recycled for
# re-initialize or other database clusters.

#------------------------------------------------------------------------------
# Remove load balancer
#------------------------------------------------------------------------------
- name: Remove load balancer
  become: yes
  hosts: all
  serial: 1
  gather_facts: no
  tags: rm-lb
  tasks:
    - name: Stop load balancer
      ignore_errors: true
      systemd: name={{ item }} state=stopped enabled=no daemon_reload=yes
      with_items:
        - vip-manager
        - haproxy
        # - keepalived


#------------------------------------------------------------------------------
# Remove pg monitor
#------------------------------------------------------------------------------
- name: Remove monitor
  become: yes
  hosts: all
  gather_facts: no
  tags: rm-monitor
  tasks:

    - name: Stop monitor service
      ignore_errors: true
      systemd: name={{ item }} state=stopped enabled=no daemon_reload=yes
      with_items:
        - pg_exporter
        - pgbouncer_exporter

    - name: Deregister exporter service
      ignore_errors: true
      file: path=/etc/consul.d/svc-{{ item }}.json state=absent
      with_items:
        - haproxy
        - pg-exporter
        - pgbouncer-exporter

    - name: Reload consul
      systemd: name=consul state=reloaded


#------------------------------------------------------------------------------
# Remove watchdog owner
#------------------------------------------------------------------------------
- name: Remove monitor
  become: yes
  hosts: all
  gather_facts: no
  tags: rm-watchdog
  tasks:
    # - watchdog owner - #
    - name: Remove patroni watchdog ownership
      ignore_errors: true
      file: path=/dev/watchdog owner=root group=root


#------------------------------------------------------------------------------
# Remove postgres service
#------------------------------------------------------------------------------
- name: Remove Postgres service
  become: yes
  hosts: all
  serial: 1
  gather_facts: no
  tags: rm-pg
  tasks:
    - name: Remove postgres replica services
      when: pg_role != 'primary'
      ignore_errors: true
      systemd: name={{ item }} state=stopped enabled=no daemon_reload=yes
      with_items:
        - patroni
        - postgres
        - pgbouncer

    # if in resume mode, postgres will not be stopped
    - name: Force stop postgres non-primary process
      become_user: "{{ pg_dbsu }}"
      when: pg_role != 'primary'
      ignore_errors: true
      shell: |
        {{ pg_bin_dir }}/pg_ctl -D {{ pg_data }} stop -m immediate
        exit 0        

    - name: Remove postgres primary services
      when: pg_role == 'primary'
      ignore_errors: true
      systemd: name={{ item }} state=stopped enabled=no daemon_reload=yes
      with_items:
        - patroni
        - postgres
        - pgbouncer

    - name: Force stop postgres primary process
      become_user: "{{ pg_dbsu }}"
      when: pg_role == 'primary'
      ignore_errors: true
      shell: |
        {{ pg_bin_dir }}/pg_ctl -D {{ pg_data }} stop -m immediate
        exit 0        

    - name: Deregister postgres services
      ignore_errors: true
      file: path=/etc/consul.d/svc-{{ item }}.json state=absent
      with_items:
        - postgres
        - pgbouncer
        - patroni


#------------------------------------------------------------------------------
# Remove postgres service
#------------------------------------------------------------------------------
- name: Remove Infrastructure
  become: yes
  hosts: all
  serial: 1
  gather_facts: no
  tags: rm-infra
  tasks:

    - name: Consul leave cluster
      ignore_errors: true
      command: /usr/bin/consul leave

    - name: Stop consul and node_exporter
      ignore_errors: true
      systemd: name={{ item }} state=stopped enabled=no daemon_reload=yes
      with_items:
        - node_exporter
        - consul

#------------------------------------------------------------------------------
# Uninstall postgres and consul
#------------------------------------------------------------------------------
- name: Uninstall Packages
  become: yes
  hosts: all
  gather_facts: no
  tags: rm-pkgs
  tasks:
    - name: Uninstall postgres and consul
      when: yum_remove is defined and yum_remove|bool
      shell: |
        yum remove -y consul
        yum remove -y postgresql{{ pg_version }}*        

...

./pgsql-remove.yml -l pg-test 

略

playbook: ./pgsql-remove.yml

  play #1 (all): Remove load balancer	TAGS: [rm-lb]
    tasks:
      Stop load balancer	TAGS: [rm-lb]

  play #2 (all): Remove monitor	TAGS: [rm-monitor]
    tasks:
      Stop monitor service	TAGS: [rm-monitor]
      Deregister exporter service	TAGS: [rm-monitor]
      Reload consul	TAGS: [rm-monitor]

  play #3 (all): Remove monitor	TAGS: [rm-watchdog]
    tasks:
      Remove patroni watchdog ownership	TAGS: [rm-watchdog]

  play #4 (all): Remove Postgres service	TAGS: [rm-pg]
    tasks:
      Remove postgres replica services	TAGS: [rm-pg]
      Force stop postgres non-primary process	TAGS: [rm-pg]
      Remove postgres primary services	TAGS: [rm-pg]
      Force stop postgres primary process	TAGS: [rm-pg]
      Deregister postgres services	TAGS: [rm-pg]

  play #5 (all): Remove Infrastructure	TAGS: [rm-infra]
    tasks:
      Consul leave cluster	TAGS: [rm-infra]
      Stop consul and node_exporter	TAGS: [rm-infra]

  play #6 (all): Uninstall Packages	TAGS: [rm-pkgs]
    tasks:
      Uninstall postgres and consul	TAGS: [rm-pkgs]

# 在 pg-test 集群中部署监控
./pgsql-monitor.yml -l pg-test

#!/usr/bin/env ansible-playbook
---
#==============================================================#
# File      :   pgsql-monitor.yml
# Ctime     :   2021-02-23
# Mtime     :   2021-02-27
# Desc      :   deploy monitor components only
# Path      :   pgsql-monitor.yml
# Copyright (C) 2018-2021 Ruohang Feng
#==============================================================#

# this is pgsql monitor setup playbook for MONITOR ONLY mode

# MONITOR-ONLY (monly) mode is a special deployment mode for
# integration with exterior provisioning solution or existing
# postgres clusters.
# with limited functionalities

# For monly deployment, The infra part is still the same.
# You MUST use static services discovery for prometheus
# You CAN NOT use services_registry


#------------------------------------------------------------------------------
# Deploy monitor on selected targets
#------------------------------------------------------------------------------
- name: Monitor Only Deployment
  become: yes
  hosts: all
  gather_facts: no
  tags: monitor
  roles:
    - role: monitor                         # init monitor system
  vars:
    #------------------------------------------------------------------------------
    # RECOMMEND CHANGES
    #------------------------------------------------------------------------------
    # You'd better change those options in your main config file
    # prometheus_sd_method: static          # MUST use static sd for monitor only mode
    service_registry: none                  # MUST NOT register services
    exporter_install: binary                # none|yum|binary, none by default

    # exporter_install controls how node_exporter & pg_exporter are installed
    #    none   : I've already installed manually
    #    yum    : Use yum install, `exporter_repo_url` will be added if specified
    #    binary : Copy binary to /usr/bin. You must have binary in your `files` dir

    #------------------------------------------------------------------------------
    # MONITOR PROVISION
    #------------------------------------------------------------------------------
    # - install - #
    # exporter_install: none                        # none|yum|binary, none by default
    # exporter_repo_url: ''                         # if set, repo will be added to /etc/yum.repos.d/ before yum installation

    # - collect - #
    # exporter_metrics_path: /metrics               # default metric path for pg related exporter

    # - node exporter - #
    # node_exporter_enabled: true                   # setup node_exporter on instance
    # node_exporter_port: 9100                      # default port for node exporter
    # node_exporter_options: '--no-collector.softnet --collector.systemd --collector.ntp --collector.tcpstat --collector.processes'

    # - pg exporter - #
    # pg_exporter_config: pg_exporter-demo.yaml     # default config files for pg_exporter
    # pg_exporter_enabled: true                     # setup pg_exporter on instance
    # pg_exporter_port: 9630                        # default port for pg exporter
    # pg_exporter_url: ''                           # optional, if not set, generate from reference parameters

    # - pgbouncer exporter - #
    # pgbouncer exporter require pgbouncer to work, so it is disabled by default in monitor-only mode
    # pgbouncer_exporter_enabled: false             # setup pgbouncer_exporter on instance (if you don't have pgbouncer, disable it)
    # pgbouncer_exporter_port: 9631                 # default port for pgbouncer exporter
    # pgbouncer_exporter_url: ''                    # optional, if not set, generate from reference parameters

    # - postgres variables reference - #
    # pg_dbsu: postgres
    # pg_port: 5432                                 # postgres port (5432 by default)
    # pgbouncer_port: 6432                          # pgbouncer port (6432 by default)
    # pg_localhost: /var/run/postgresql             # localhost unix socket dir for connection
    # pg_default_database: postgres                 # default database will be used as primary monitor target
    # pg_monitor_username: dbuser_monitor           # system monitor username, for postgres and pgbouncer
    # pg_monitor_password: DBUser.Monitor           # system monitor user's password
    # service_registry: consul                      # none | consul | etcd | both



#------------------------------------------------------------------------------
# update static inventory in meta node and reload
#------------------------------------------------------------------------------
- name: Update prometheus static sd files
  become: yes
  hosts: meta
  tags: prometheus
  gather_facts: no
  vars:
    #------------------------------------------------------------------------------
    # RECOMMEND CHANGES
    #------------------------------------------------------------------------------
    prometheus_sd_method: static                  # service discovery method: static|consul|etcd

  tasks:
    - include_tasks: roles/prometheus/tasks/targets.yml
    - include_tasks: roles/prometheus/tasks/reload.yml

...

./pgsql-monitor.yml -l pg-test

$ ./pgsql-monitor.yml -l pg-test -e pg_user=test
[WARNING]: Invalid characters were found in group names but not replaced, use -vvvv to see details

PLAY [Create user in cluster] *****************************************************************************************************************************************************

TASK [Check parameter pg_user] ****************************************************************************************************************************************************
ok: [10.10.10.11] => {
    "changed": false,
    "msg": "All assertions passed"
}
ok: [10.10.10.12] => {
    "changed": false,
    "msg": "All assertions passed"
}
ok: [10.10.10.13] => {
    "changed": false,
    "msg": "All assertions passed"
}

TASK [Fetch user definition] ******************************************************************************************************************************************************
ok: [10.10.10.11]
ok: [10.10.10.12]
ok: [10.10.10.13]

TASK [debug] **********************************************************************************************************************************************************************
ok: [10.10.10.11] => {
    "msg": {
        "comment": "default test user for production usage",
        "name": "test",
        "password": "test",
        "pgbouncer": true,
        "roles": [
            "dbrole_readwrite"
        ]
    }
}
ok: [10.10.10.12] => {
    "msg": {
        "comment": "default test user for production usage",
        "name": "test",
        "password": "test",
        "pgbouncer": true,
        "roles": [
            "dbrole_readwrite"
        ]
    }
}
ok: [10.10.10.13] => {
    "msg": {
        "comment": "default test user for production usage",
        "name": "test",
        "password": "test",
        "pgbouncer": true,
        "roles": [
            "dbrole_readwrite"
        ]
    }
}

TASK [Check user definition] ******************************************************************************************************************************************************
ok: [10.10.10.11] => {
    "changed": false,
    "msg": "All assertions passed"
}
ok: [10.10.10.12] => {
    "changed": false,
    "msg": "All assertions passed"
}
ok: [10.10.10.13] => {
    "changed": false,
    "msg": "All assertions passed"
}

TASK [include_tasks] **************************************************************************************************************************************************************
included: /Volumes/Data/pigsty/roles/postgres/tasks/monitor.yml for 10.10.10.11, 10.10.10.12, 10.10.10.13

TASK [Render user test creation sql] **********************************************************************************************************************************************
skipping: [10.10.10.12]
skipping: [10.10.10.13]
changed: [10.10.10.11]

TASK [Execute user test creation sql on primary] **********************************************************************************************************************************
skipping: [10.10.10.12]
skipping: [10.10.10.13]
changed: [10.10.10.11]

TASK [Add user to pgbouncer] ******************************************************************************************************************************************************
changed: [10.10.10.11]
changed: [10.10.10.13]
changed: [10.10.10.12]

TASK [Reload pgbouncer to add user] ***********************************************************************************************************************************************
changed: [10.10.10.11]
changed: [10.10.10.12]
changed: [10.10.10.13]

PLAY RECAP ************************************************************************************************************************************************************************
10.10.10.11                : ok=9    changed=4    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0
10.10.10.12                : ok=7    changed=2    unreachable=0    failed=0    skipped=2    rescued=0    ignored=0
10.10.10.13                : ok=7    changed=2    unreachable=0    failed=0    skipped=2    rescued=0    ignored=0