PMM-13391 Bump up loki and fix the config

build/ansible/roles/loki/files/Dockerfile.loki

@@ -1,7 +1,7 @@
 # TODO: the image should be percona/pmm-server:3 once PMM v3 is released.
 
 # To build the image, run the following in the project root directory (mind the dot):
-# docker buildx build --platform=linux/amd64 --progress plain -t perconalab/pmm-server:loki-3.2 -f ./build/ansible/roles/loki/files/Dockerfile.loki .
+# docker buildx build --platform=linux/amd64 --progress plain -t perconalab/pmm-server:loki-3.3.1 -f ./build/ansible/roles/loki/files/Dockerfile.loki .
 FROM perconalab/pmm-server:3-dev-latest
 
 ENV GF_ANALYTICS_CHECK_FOR_UPDATES=false
@@ -17,8 +17,8 @@ USER pmm
 
 EXPOSE 3100
 
-# To launch it: 
-#  `docker run -d --name loki --platform=linux/amd64 -p 3100:3100 -p 443:8443 perconalab/pmm-server:loki-3.2`
+# To launch it:
+#  docker run -d --name loki --platform=linux/amd64 -p 3100:3100 -p 443:8443 perconalab/pmm-server:loki-3.3.1
 
 # To upload data to Loki:
 #  curl -X POST -k \

build/ansible/roles/loki/files/config.yml

@@ -18,9 +18,6 @@ common:
     kvstore:
       store: inmemory
 
-ingester_rf1:
-  enabled: false
-
 query_range:
   results_cache:
     cache:
@@ -41,7 +38,6 @@ schema_config:
 pattern_ingester:
   enabled: true
   metric_aggregation:
-    enabled: true
     loki_address: 127.0.0.1:3100
 
 ruler:

build/ansible/roles/loki/tasks/main.yml

@@ -13,7 +13,7 @@
     sslcacert: /etc/pki/tls/certs/ca-bundle.crt
 
 - name: Install Loki and Promtail
-  yum:
+  dnf:
     name: "{{ item }}"
     state: latest
     disablerepo: "*"
@@ -99,3 +99,14 @@
 
 - name: Remove ansible markers from pmm.conf
   command: sed -i '/^#LOKI_LOCATION_.*/d' /etc/nginx/conf.d/pmm.conf
+
+- name: Clean up dnf cache
+  command: dnf clean all
+
+- name: Remove package cache directories
+  file:
+    path: "{{ item }}"
+    state: absent
+  loop:
+    - /var/cache/dnf
+    - /var/cache/yum