<pre data-code-wrap="mermaid" class="language-plaintext" tabindex="0"><code class="language-plaintext">flowchart TD hook_fired([leader-elected Hook]) --&gt; generate_passwords{Generate password for charm users?} generate_passwords --&gt; create_k8s_resources[Create k8s resources\n needed by Patroni] create_k8s_resources --&gt; is_part_of_cluster{Is current unit \n part of the cluster?} is_part_of_cluster -- no --&gt; add_to_cluster[Add current unit \n to the cluster] add_to_cluster --&gt; remove_departed_units is_part_of_cluster -- yes --&gt; remove_departed_units[Remove pending departed \n units from the cluster] remove_departed_units --&gt; has_cluster_initialised{Has cluster\n initialised?} has_cluster_initialised -- no --&gt; rtn([return]) has_cluster_initialised -- yes --&gt; all_units_on_cluster{Are all the units \n part of the cluster?} all_units_on_cluster -- yes --&gt; update_config[Turn on/off PostgreSQL \n synchronous_commit configuration] all_units_on_cluster -- no --&gt; are_all_members_ready{Are all cluster \n members ready?} %% This defer should have a return after it to stop the execution. are_all_members_ready -- no --&gt; defer2&gt;defer] defer2 --&gt; update_config are_all_members_ready -- yes --&gt; add_unit_to_cluster[Add unit to cluster] add_unit_to_cluster --&gt; patch_pod_labels[Patch pod labels of the new cluster member] patch_pod_labels --&gt; all_units_on_cluster update_config --&gt; rtn2([return]) </code></pre>

<pre data-code-wrap="mermaid" class="language-plaintext" tabindex="0"><code class="language-plaintext">flowchart TD hook_fired([leader-elected Hook]) --&gt; create_pgdata{Create data\n directory} create_pgdata --&gt; is_leader_or_has_cluster_initialised{Is current unit\n leader or has the \n cluster initialised?} is_leader_or_has_cluster_initialised -- no --&gt; defer&gt;defer] is_leader_or_has_cluster_initialised -- yes --&gt; has_pushed_tls_files{Has successfully \n pushed TLS files?} has_pushed_tls_files -- no --&gt; defer2&gt;defer] has_pushed_tls_files -- yes --&gt; has_services_changed{Have pebble \n services changed?} has_services_changed -- no --&gt; has_member_started has_services_changed -- yes --&gt; update_and_restart_service[Update and restart \n the PostgreSQL service] update_and_restart_service --&gt; has_member_started{Have Patroni and \n PostgreSQL started in \n the current unit?} has_member_started -- no --&gt; defer3&gt;defer] has_member_started -- yes --&gt; is_leader{Is current\nunit leader?} is_leader -- yes --&gt; has_patched_pod_labels{Has successfully \n patched pod labels of \n the new current unit} is_leader -- no --&gt; update_config has_patched_pod_labels -- no --&gt; set_blocked[Set Blocked\nstatus] set_blocked --&gt; rtn([return]) has_patched_pod_labels -- yes --&gt; is_service_redirecting_traffic{Is custom k8s service \n redirecting traffic to \n primary pod?} is_service_redirecting_traffic -- no --&gt; set_waiting[Set Waiting\nstatus] set_waiting --&gt; defer4&gt;defer] is_service_redirecting_traffic -- yes --&gt; mark_cluster_as_initialised[Mark cluster as initialised] mark_cluster_as_initialised--&gt; update_config[Turn on/off PostgreSQL \n synchronous_commit configuration] update_config --&gt; set_active[Set Active\n Status] set_active --&gt; rtn2([return]) </code></pre>