Enable --log-level=info for docker daemons for scalability jenkins job and e2e test.

cluster/common.sh

@@ -530,6 +530,11 @@ EOF
 KUBELET_TEST_LOG_LEVEL: $(yaml-quote ${KUBELET_TEST_LOG_LEVEL})
 EOF
   fi
+  if [ -n "${DOCKER_TEST_LOG_LEVEL:-}" ]; then
+      cat >>$file <<EOF
+DOCKER_TEST_LOG_LEVEL: $(yaml-quote ${DOCKER_TEST_LOG_LEVEL})
+EOF
+  fi
   if [ -n "${ENABLE_CUSTOM_METRICS:-}" ]; then
     cat >>$file <<EOF
 ENABLE_CUSTOM_METRICS: $(yaml-quote ${ENABLE_CUSTOM_METRICS})

cluster/gce/config-test.sh

@@ -69,6 +69,7 @@ ENABLE_CLUSTER_MONITORING="${KUBE_ENABLE_CLUSTER_MONITORING:-influxdb}"
 # Default Log level for all components in test clusters and variables to override it in specific components.
 TEST_CLUSTER_LOG_LEVEL="${TEST_CLUSTER_LOG_LEVEL:---v=4}"
 KUBELET_TEST_LOG_LEVEL="${KUBELET_TEST_LOG_LEVEL:-$TEST_CLUSTER_LOG_LEVEL}"
+DOCKER_TEST_LOG_LEVEL="${DOCKER_TEST_LOG_LEVEL:---log-level=info}"
 API_SERVER_TEST_LOG_LEVEL="${API_SERVER_TEST_LOG_LEVEL:-$TEST_CLUSTER_LOG_LEVEL}"
 CONTROLLER_MANAGER_TEST_LOG_LEVEL="${CONTROLLER_MANAGER_TEST_LOG_LEVEL:-$TEST_CLUSTER_LOG_LEVEL}"
 SCHEDULER_TEST_LOG_LEVEL="${SCHEDULER_TEST_LOG_LEVEL:-$TEST_CLUSTER_LOG_LEVEL}"

cluster/gce/configure-vm.sh

@@ -464,6 +464,11 @@ EOF
 kubelet_test_log_level: '$(echo "$KUBELET_TEST_LOG_LEVEL" | sed -e "s/'/''/g")'
 EOF
     fi
+    if [ -n "${DOCKER_TEST_LOG_LEVEL:-}" ]; then
+      cat <<EOF >>/srv/salt-overlay/pillar/cluster-params.sls
+docker_test_log_level: '$(echo "$DOCKER_TEST_LOG_LEVEL" | sed -e "s/'/''/g")'
+EOF
+    fi
     if [ -n "${CONTROLLER_MANAGER_TEST_ARGS:-}" ]; then
       cat <<EOF >>/srv/salt-overlay/pillar/cluster-params.sls
 controller_manager_test_args: '$(echo "$CONTROLLER_MANAGER_TEST_ARGS" | sed -e "s/'/''/g")'

cluster/saltbase/salt/docker/docker-defaults

@@ -7,5 +7,9 @@
 {% if pillar.get('network_provider', '').lower() == 'kubenet' %}
   {% set bridge_opts = "" %}
 {% endif -%}
-DOCKER_OPTS="{{grains_opts}} {{e2e_opts}} {{bridge_opts}} --iptables=false --ip-masq=false --log-level=warn"
+{% set log_level = pillar['log_level'] -%}
+{% if pillar['docker_test_log_level'] is defined -%}
+  {% set log_level = pillar['docker_test_log_level'] -%}
+{% endif -%}
+DOCKER_OPTS="{{grains_opts}} {{e2e_opts}} {{bridge_opts}} --iptables=false --ip-masq=false {{log_level}}"
 DOCKER_NOFILE=1000000

hack/jenkins/job-configs/kubernetes-e2e.yaml

@@ -139,6 +139,8 @@
                 export REGISTER_MASTER="true"
                 # Reduce logs verbosity
                 export TEST_CLUSTER_LOG_LEVEL="--v=2"
+                # TODO: Remove when we figure out #22166 and other docker potential slowness
+                export DOCKER_TEST_LOG_LEVEL="--log-level=info"
                 # TODO: Remove when we figure out the reason for occasional failures #19048
                 export KUBELET_TEST_LOG_LEVEL="--v=4"
                 # Increase resync period to simulate production