feat: create redisha module

- manage redis/sentinel clusters - ensure ulimit_managed is false - dynamically find servers in role to identify master - add redisadm and sentineladm commands - add script to check if the current host in the master
2024-08-09 23:22:37 +10:00
parent aadd0275ac
commit b7fc6a1993
8 changed files with 202 additions and 0 deletions
@@ -0,0 +1,49 @@
+class redisha::sentinel (
+  Boolean $redisha_members_lookup = $redisha::redisha_members_lookup,
+  Optional[String] $redisha_members_role = $redisha::redisha_members_role,
+  Array   $redisha_servers = $redisha::redisha_servers,
+  Stdlib::Port $redis_port = $redisha::params::redis_port,
+  Optional[String] $requirepass = $redisha::params::requirepass,
+  String[1] $master_name  = $redisha::params::master_name,
+  Optional[Variant[String, Sensitive[String]]] $auth_pass = $redisha::params::auth_pass,
+  Integer[1] $quorum = $redisha::params::quorum,
+  Enum['yes', 'no'] $sentinel_resolve_hostnames = $redisha::params::sentinel_resolve_hostnames,
+  Enum['yes', 'no'] $sentinel_announce_hostnames = $redisha::params::sentinel_announce_hostnames,
+  Stdlib::Host $sentinel_announce_ip = $redisha::params::sentinel_announce_ip,
+  Array[Stdlib::IP::Address] $sentinel_bind = $redisha::params::sentinel_bind,
+  Stdlib::Port $sentinel_port = $redisha::params::sentinel_port,
+) inherits redisha::params {
+
+  # if lookup is enabled
+  if $redisha_members_lookup {
+
+    # check that the role is also set
+    unless !($redisha_members_role == undef) {
+      fail("redisha_members_role must be provided for ${title} when redisha_members_lookup is True")
+    }
+
+    # if it is, find hosts, sort them so they dont cause changes every run
+    $servers_array = sort(query_nodes("enc_role='${redisha_members_role}' and region='${facts['region']}'", 'networking.fqdn'))
+
+  # else use provided array from params
+  }else{
+    $servers_array = $redisha_servers
+  }
+
+  if length($servers_array) >= 3 {
+
+    class { 'redis::sentinel':
+      master_name                 => $master_name,
+      redis_host                  => $servers_array[0],
+      redis_port                  => $redis_port,
+      requirepass                 => $requirepass,
+      auth_pass                   => $auth_pass,
+      quorum                      => $quorum,
+      sentinel_resolve_hostnames  => $sentinel_resolve_hostnames,
+      sentinel_announce_ip        => $sentinel_announce_ip,
+      sentinel_announce_hostnames => $sentinel_announce_hostnames,
+      sentinel_port               => $sentinel_port,
+      sentinel_bind               => $sentinel_bind,
+    }
+  }
+}