Azure: Increase memory limit

Azure host has 6 GB of physical memory + 7 GB of swap.
FreeIPA CI runs at least 5 masters on each Azure's host.
Thus, swap is intensively used.

Based on the available *physical* memory 389-ds performs db tweaks
and in future may fail to start in case of memory shortage.

Current memory limit for Azure Docker containers(master/replica):
- Physical
$ cat /sys/fs/cgroup/memory/memory.limit_in_bytes
1610612736
- Physical + swap:
$ cat /sys/fs/cgroup/memory/memory.memsw.limit_in_bytes
3221225472

In the meantime, installation of master + ca + kra + dnssec requires:
$ cat /sys/fs/cgroup/memory/memory.max_usage_in_bytes
1856929792

Some test environments require more memory.
For example, 'ipatests.test_integration.test_commands.TestIPACommand':
$ cat /sys/fs/cgroup/memory/memory.memsw.max_usage_in_bytes
2232246272
$ cat /sys/fs/cgroup/memory/memory.max_usage_in_bytes
2232246272

Fixes: https://pagure.io/freeipa/issue/8264
Signed-off-by: Stanislav Levin <slev@altlinux.org>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>

ipatests/azure/Dockerfiles/docker-compose.yml

@@ -7,7 +7,7 @@ services:
     - ALL
     security_opt:
     - apparmor:unconfined
-    mem_limit: 1610612736
+    mem_limit: 1900m
     volumes:
     - /sys/fs/cgroup/systemd:/sys/fs/cgroup/systemd
     - ./ipa-test-config.yaml:/root/.ipa/ipa-test-config.yaml:ro
@@ -23,7 +23,7 @@ services:
     - ALL
     security_opt:
     - apparmor:unconfined
-    mem_limit: 1610612736
+    mem_limit: 1900m
     volumes:
     - /sys/fs/cgroup/systemd:/sys/fs/cgroup/systemd
     networks:

ipatests/azure/scripts/azure-run-base-tests.sh

@@ -92,5 +92,14 @@ tar --ignore-failed-read --remove-files -czf var_log.tar.gz \
     "$BIND_DATADIR" \
     systemd_journal.log
 
+echo "Report memory statistics"
+cat /sys/fs/cgroup/memory/memory.memsw.failcnt
+cat /sys/fs/cgroup/memory/memory.memsw.limit_in_bytes
+cat /sys/fs/cgroup/memory/memory.memsw.max_usage_in_bytes
+cat /sys/fs/cgroup/memory/memory.failcnt
+cat /sys/fs/cgroup/memory/memory.max_usage_in_bytes
+cat /sys/fs/cgroup/memory/memory.limit_in_bytes
+cat /proc/sys/vm/swappiness
+
 # Final result depends on the exit code of the ipa-run-tests
 test "$tests_result" -eq 0 -a "$install_result" -eq 0

ipatests/azure/scripts/azure-run-integration-tests.sh

@@ -26,4 +26,13 @@ chmod -R o+rX "$IPA_TESTS_LOGSDIR"
 find "$IPA_TESTS_LOGSDIR" -mindepth 1 -maxdepth 1 -not -name '.*' -type d \
     -exec tar --remove-files -czf {}.tar.gz {} \;
 
+echo "Report memory statistics"
+cat /sys/fs/cgroup/memory/memory.memsw.failcnt
+cat /sys/fs/cgroup/memory/memory.memsw.limit_in_bytes
+cat /sys/fs/cgroup/memory/memory.memsw.max_usage_in_bytes
+cat /sys/fs/cgroup/memory/memory.failcnt
+cat /sys/fs/cgroup/memory/memory.max_usage_in_bytes
+cat /sys/fs/cgroup/memory/memory.limit_in_bytes
+cat /proc/sys/vm/swappiness
+
 exit $tests_result

ipatests/azure/templates/test-jobs.yml

@@ -44,6 +44,15 @@ steps:
 
 - template: run-test.yml
 
+- script: |
+    set -eux
+    free -m
+    cat /sys/fs/cgroup/memory/memory.memsw.max_usage_in_bytes
+    cat /sys/fs/cgroup/memory/memory.max_usage_in_bytes
+    cat /proc/sys/vm/swappiness
+  condition: succeededOrFailed()
+  displayName: Host's memory statistics
+
 - task: PublishTestResults@2
   inputs:
     testResultsFiles: 'ipa_envs/*/$(CI_RUNNER_LOGS_DIR)/nosetests.xml'