Revise the versions on a few queries, improve query tests

* Add ability to specify the sslmode parameter when connecting to
  PostgreSQL

* Fix min versions for replication queries

* Add query-tests target to main Makefile

Makefile

@@ -22,7 +22,7 @@ SUPPORTED := ubuntu-20.04 \
 # These targets are the main ones to use for most things.
 ##
 
-.PHONY: all clean tgz test install
+.PHONY: all clean tgz test query-tests install
 
 
 # Build all packages
@@ -64,6 +64,10 @@ clean:
 test:
 	cd src ; python3 -m unittest
 
+# Run query tests
+query-tests:
+	cd tests ; ./run-tests.sh
+
 # Install the script at the specified base directory
 install:
 	# Set up directories
@@ -92,7 +96,7 @@ install:
 
 
 # Run all of the install tests
-.PHONY: install-tests debian-%-install-test rockylinux-%-install-test ubuntu-%-install-test
+.PHONY: install-tests debian-%-install-test rockylinux-%-install-test ubuntu-%-install-test gentoo-install-test
 install-tests: $(foreach distro_release, $(SUPPORTED), $(distro_release)-install-test)
 
 
@@ -124,6 +128,11 @@ oraclelinux-%-install-test:
 	     oraclelinux:7 \
 	     bash -c 'yum makecache && yum install -y /output/$(PACKAGE_NAME)-$(VERSION)-1.el7.noarch.rpm'
 
+# Run a Gentoo install test
+gentoo-install-test:
+	# May impliment this in the future, but would require additional headaches to set up a repo
+	true
+
 ##
 # Container targets
 #

sample-config/pgmon-metrics.yml

@@ -11,7 +11,7 @@ metrics:
   discover_slots:
     type: set
     query:
-      0: SELECT slot_name, plugin, slot_type, database, false as temporary, active FROM pg_replication_slots
+      90400: SELECT slot_name, plugin, slot_type, database, false as temporary, active FROM pg_replication_slots
       100000: SELECT slot_name, plugin, slot_type, database, temporary, active FROM pg_replication_slots
 
   # cluster-wide metrics
@@ -20,9 +20,9 @@ metrics:
     query:
       0: SHOW server_version_num
   max_frozen_age:
-    type: value
+    type: row
     query:
-      0: SELECT max(age(datfrozenxid)) FROM pg_database
+      0: SELECT max(age(datfrozenxid)), max(mxid_age(datminmxid)) FROM pg_database
 
   # Per-database metrics
   db_stats:
@@ -43,7 +43,7 @@ metrics:
   rep_stats:
     type: row
     query:
-      0: SELECT * FROM pg_stat_replication WHERE client_addr || '_' || regexp_replace(application_name, '[ ,]', '_', 'g') = '{repid}'
+      90400: SELECT * FROM pg_stat_replication WHERE client_addr || '_' || regexp_replace(application_name, '[ ,]', '_', 'g') = '{repid}'
     test_args:
       repid: 127.0.0.1_test_rep
 
@@ -57,7 +57,7 @@ metrics:
   slot_stats:
     type: row
     query:
-      0: SELECT active_pid, xmin, pg_xlog_location_diff(pg_current_xlog_location(), restart_lsn) AS restart_bytes, pg_xlog_location_diff(pg_current_xlog_location(), confirmed_flush_lsn) AS confirmed_flush_bytes FROM pg_replication_slots WHERE slot_name = '{slot}'
+      90400: SELECT active_pid, xmin, pg_xlog_location_diff(pg_current_xlog_location(), restart_lsn) AS restart_bytes, pg_xlog_location_diff(pg_current_xlog_location(), confirmed_flush_lsn) AS confirmed_flush_bytes FROM pg_replication_slots WHERE slot_name = '{slot}'
       100000: SELECT active_pid, xmin, pg_wal_lsn_diff(pg_current_wal_lsn(), restart_lsn) AS restart_bytes, pg_wal_lsn_diff(pg_current_wal_lsn(), confirmed_flush_lsn) AS confirmed_flush_bytes FROM pg_replication_slots WHERE slot_name = '{slot}'
     test_args:
       slot: test_slot

tests/docker-compose.yml

@@ -23,7 +23,7 @@ services:
       test: [ "CMD-SHELL", "pg_controldata /var/lib/postgresql/data/ | grep -q 'in production'" ]
       interval: 5s
       timeout: 2s
-      retries: 10
+      retries: 20
     command: >
       postgres -c ssl=on
                -c ssl_cert_file='/etc/ssl/certs/ssl-cert-snakeoil.pem'

tests/test-config.yml

@@ -8,8 +8,9 @@ dbhost: db
 dbport: 5432
 dbuser: postgres
 
-# Allow some insecure SSL parameters for the 9.2 test
-ssl_ciphers: DEFAULT@SECLEVEL=1
+# The SSL cipher parameters are too old in the 9.2 container, so we allow the tests
+# to be run without encryption
+ssl_mode: prefer
 
 # Pull in the standard metrics
 include: