db-koji02: create vm and config files for hot standby kojidb.

Signed-off-by: Kevin Fenzi <kevin@scrye.com>

inventory/host_vars/db-koji02.phx2.fedoraproject.org

@@ -0,0 +1,49 @@
+---
+nm: 255.255.255.0
+gw: 10.5.125.254
+dns: 10.5.126.21
+volgroup: /dev/vg_guests
+eth0_ip: 10.5.125.48
+vmhost: bvirthost12.phx2.fedoraproject.org
+datacenter: phx2
+
+ks_url: http://infrastructure.phx2.fedoraproject.org/repo/rhel/ks/kvm-rhel-7
+ks_repo: http://infrastructure.phx2.fedoraproject.org/repo/rhel/RHEL7-x86_64/
+
+# This is a generic list, monitored by collectd
+databases:
+- koji
+
+# This is a more strict list, to be made publicly available
+dbs_to_backup:
+- koji
+
+# These are normally group variables, but in this case db servers are often different
+lvm_size: 300000
+mem_size: 32768
+num_cpus: 24
+fas_client_groups: sysadmin-dba,sysadmin-noc,sysadmin-veteran
+
+# kernel SHMMAX value
+kernel_shmmax: 68719476736
+
+#
+# Only allow postgresql access from the frontend node.
+#
+custom_rules: [ 
+'-A INPUT -p tcp -m tcp -s 10.5.125.59 --dport 5432 -j ACCEPT', 
+'-A INPUT -p tcp -m tcp -s 10.5.125.60 --dport 5432 -j ACCEPT', 
+'-A INPUT -p tcp -m tcp -s 10.5.125.61 --dport 5432 -j ACCEPT', 
+'-A INPUT -p tcp -m tcp -s 10.5.125.62 --dport 5432 -j ACCEPT', 
+'-A INPUT -p tcp -m tcp -s 10.5.126.41 --dport 5432 -j ACCEPT', 
+]
+
+#
+# Large updates pushes cause lots of db threads doing the tag moves, so up this from default. 
+# 
+nrpe_procs_warn: 600
+nrpe_procs_crit: 700
+
+db_backup_dir: ['/backups']
+shared_buffers: "8GB"
+effective_cache_size: "24GB"

inventory/inventory

@@ -293,6 +293,7 @@ db03.phx2.fedoraproject.org
 db-fas01.phx2.fedoraproject.org
 db-datanommer02.phx2.fedoraproject.org
 db-koji01.phx2.fedoraproject.org
+db-koji02.phx2.fedoraproject.org
 db-qa01.qa.fedoraproject.org
 db-qa02.qa.fedoraproject.org
 db-qa03.qa.fedoraproject.org

roles/postgresql_server/tasks/main.yml

@@ -90,13 +90,24 @@
   - config
   - postgresql
 
+- name: postgresql recover.conf template (standby only)
+  template: dest=/var/lib/pgsql/data/resovery.conf src=recovery.conf
+  when: inventory_hostname.startswith('db-koji02')
+  notify:
+  - restart postgresql
+  tags:
+  - config
+  - postgresql
+
 - name: Ensure postgres has a place to backup to
   file: dest=/backups state=directory owner=postgres
+  when: inventory_hostname.startswith('db-koji02')
   tags:
   - postgresql
 
 - name: Copy over backup scriplet
   copy: src=backup-database dest=/usr/local/bin/backup-database mode=0755
+  when: inventory_hostname.startswith('db-koji02')
   tags:
   - postgresql
 

roles/postgresql_server/templates/postgresql.conf

@@ -505,3 +505,11 @@ default_text_search_config = 'pg_catalog.english'
 #
 # Number of concurrent i/o operations at the same time. The default is 1.
 effective_io_concurrency = 1
+
+{% if ansible_hostname.startswith("db-koji01") %}
+wal_level = 'hot_standby'
+max_wal_senders = 10
+wal_keep_segments = 100
+{% elif ansible_hostname.startswith("db-koji02") %}
+hot_standby = on
+{% endif %}

roles/postgresql_server/templates/recovery.conf

@@ -0,0 +1,3 @@
+standby_mode = 'on'
+primary_conninfo = 'host=10.5.125.48 port=5432 user=replication password={{ koji_db_replication_password }}
+trigger_file= '/var/lib/pgsql/trigger_file'