Merge pull request #107 from eRadical/wsrep_slave_threads

Extra options for wsrep_slave_threads
mrlesmithjr · Jan 25, 2022 · 7e0e692 · 7e0e692
2 parents 481508e + 26b43f8
commit 7e0e692
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Showing 3 changed files with 15 additions and 2 deletions.
diff --git a/defaults/main.yml b/defaults/main.yml
@@ -105,6 +105,11 @@ galera_wsrep_node_address: "{{ galera_cluster_bind_address }}:{{ galera_wsrep_no
 # Defines wsrep node port
 galera_wsrep_node_address_port: 4567
 
+# Define the number of wsrep_slave_threads:
+# - if `auto` we will use "number of vCPUs - 1"
+# - else the value define here is used
+galera_wsrep_slave_threads: 1
+
 # Define the name of the cluster
 galera_cluster_name: "vagrant-test"
 

diff --git a/templates/etc/my.cnf.d/server.cnf.j2 b/templates/etc/my.cnf.d/server.cnf.j2
@@ -79,7 +79,11 @@ innodb_autoinc_lock_mode=2
 bind-address={{ mariadb_bind_address }}
 #
 # Optional setting
-#wsrep_slave_threads=1
+{% if galera_wsrep_slave_threads == "auto" %}
+wsrep_slave_threads={{ 1 if (ansible_processor_vcpus <= 1) else (ansible_processor_vcpus - 1) }}
+{% else %}
+wsrep_slave_threads={{ galera_wsrep_slave_threads }}
+{% endif %}
 #innodb_flush_log_at_trx_commit=0
 
 {% if galera_enable_galera_monitoring_script %}

diff --git a/templates/etc/my.cnf.d/server.cnf.temp.j2 b/templates/etc/my.cnf.d/server.cnf.temp.j2
@@ -79,7 +79,11 @@ innodb_autoinc_lock_mode=2
 bind-address={{ mariadb_bind_address }}
 #
 # Optional setting
-#wsrep_slave_threads=1
+{% if galera_wsrep_slave_threads == "auto" %}
+wsrep_slave_threads={{ 1 if (ansible_processor_vcpus <= 1) else (ansible_processor_vcpus - 1) }}
+{% else %}
+wsrep_slave_threads={{ galera_wsrep_slave_threads }}
+{% endif %}
 #innodb_flush_log_at_trx_commit=0
 
 {% if galera_enable_galera_monitoring_script %}