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added grafana-deployment updates when configmaps are generated

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This commit is contained in:
Eduardo Gonzalez
2017-09-14 15:26:45 +02:00
parent 5a253f192b
commit 41972d362c
7 changed files with 243 additions and 25 deletions
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88
hack/grafana-dashboards-configmap-generator/bin/grafana_dashboards_generate.sh
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@@ -16,8 +16,12 @@ set -u
# Based on a configurable size limit, the tool will create 1 or N configmaps
# to allocate the .json resources (bin packing)
# Update: 20170914
# The tool also generates a grafana deployment manifest (-g option)
# parameters
# -o, --output-file
# -g, --grafana-manifest-file
# -i, --input-dir
# -s, --size-limit
# -x, --apply-configmap : true or false (default = false)
@@ -66,15 +70,18 @@ DATE_EXEC="$(date "+%Y-%m-%d-%H%M%S")"
BIN_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
TOOL_HOME="$(dirname $BIN_DIR)"
SCRIPT_BASE=`basename $0 | sed "s/\.[Ss][Hh]//"`
CONFIGMAP_DASHBOARD_PREFIX="grafana-dashboards"
TEMPLATES_DIR="$TOOL_HOME/templates"
DASHBOARD_HEADER_FILE="$TEMPLATES_DIR/dashboard.header"
DASHBOARD_FOOT_FILE="$TEMPLATES_DIR/dashboard.foot"
CONFIGMAP_HEADER="$TEMPLATES_DIR/ConfigMap.header"
GRAFANA_DEPLOYMENT_TEMPLATE="$TEMPLATES_DIR/grafana-deployment-template.yaml"
OUTPUT_BASE_DIR="$TOOL_HOME/output"
# Some default values
OUTPUT_FILE="$OUTPUT_BASE_DIR/grafana-dashboards-configMap-$DATE_EXEC.yaml"
GRAFANA_OUTPUT_FILE="$OUTPUT_BASE_DIR/grafana-deployment-$DATE_EXEC.yaml"
DASHBOARDS_DIR="$TEMPLATES_DIR/grafana-dashboards"
APPLY_CONFIGMAP="false"
@@ -89,6 +96,10 @@ while (( "$#" )); do
OUTPUT_FILE="$2"
shift
;;
"-g" | "--grafana-output-file")
GRAFANA_OUTPUT_FILE="$2"
shift
;;
"-i" | "--input-dir")
DASHBOARDS_DIR="$2"
shift
@@ -125,6 +136,26 @@ while (( "$#" )); do
shift
done
#
# Auxiliary Functions
#
indentMultiLineString() {
# Indent a given string (in one line including multiple \n)
test "$#" -eq 2 || { echo "INTERNAL ERROR: wrong call to function indentMultiLineString"; exit 1; }
local indent_number="$1"
local string="$2"
test "$indent_number" -ge 0 || { echo "INTERNAL ERROR: wrong indent number parameter: $indent_number"; exit 1; }
# prepare indentation text
local indent_string=""
for (( c=0; c<$indent_number; c++ )); do
indent_string="$indent_string "
done
echo "$string" | sed -e "s#^#$indent_string#" -e "s#\\\n#\\\n$indent_string#g"
}
#
# Main Functions
#
@@ -135,7 +166,7 @@ addConfigMapHeader() {
test "$#" -eq 1 && local id="$1" || local id=""
if [ "$id" ]; then
cat "$CONFIGMAP_HEADER" | sed "s/name: grafana-dashboards/name: grafana-dashboards-$id/"
cat "$CONFIGMAP_HEADER" | sed "s/name: $CONFIGMAP_DASHBOARD_PREFIX/name: $CONFIGMAP_DASHBOARD_PREFIX-$id/"
else
cat "$CONFIGMAP_HEADER"
fi
@@ -247,12 +278,23 @@ bin-pack-files() {
IFS=$OLDIFS
}
# prepareGrafanaDeploymentManifest() {
# local num_configmaps="$1"
#
# for (( i=0; i<$total_configmaps_created; i++ )); do
# echo "Creating deployment for $CONFIGMAP_DASHBOARD_PREFIX-$i"
#
# done
# }
# Some variables checks...
test ! -d "$TEMPLATES_DIR" && { echo "ERROR: missing templates directory $TEMPLATES_DIR"; exit 1; }
test -f "$DASHBOARD_FOOT_FILE" || { echo "Template $DASHBOARD_FOOT_FILE not found"; exit 1; }
test -f "$DASHBOARD_HEADER_FILE" || { echo "Template $DASHBOARD_HEADER_FILE not found"; exit 1; }
test -f "$CONFIGMAP_HEADER" || { echo "Template $CONFIGMAP_HEADER not found"; exit 1; }
test -f "$GRAFANA_DEPLOYMENT_TEMPLATE" || { echo "Template $GRAFANA_DEPLOYMENT_TEMPLATE not found"; exit 1; }
test ! -d "$OUTPUT_BASE_DIR" && { echo "ERROR: missing directory $OUTPUT_BASE_DIR"; exit 1; }
@@ -260,7 +302,9 @@ test ! -d "$OUTPUT_BASE_DIR" && { echo "ERROR: missing directory $OUTPUT_BASE_DI
test -d "$DASHBOARDS_DIR" || { echo "ERROR: Dashboards directory not found: $DASHBOARDS_DIR"; echoSyntax; exit 1; }
test -f "$OUTPUT_FILE" && { echo "ERROR: Output file already exists: $OUTPUT_FILE"; exit 1; }
test -f "$GRAFANA_OUTPUT_FILE" && { echo "ERROR: Output file already exists: $GRAFANA_OUTPUT_FILE"; exit 1; }
touch $OUTPUT_FILE || { echo "ERROR: Unable to create or modify $OUTPUT_FILE"; exit 1; }
touch $GRAFANA_OUTPUT_FILE || { echo "ERROR: Unable to create or modify $GRAFANA_OUTPUT_FILE"; exit 1; }
# Main code start
@@ -269,6 +313,8 @@ echo "# Configured size limit: $DATA_SIZE_LIMIT bytes"
echo "# Grafna input dashboards and datasources will be read from: $DASHBOARDS_DIR"
echo "# Grafana Dashboards ConfigMap will be created into file:"
echo "$OUTPUT_FILE"
echo "# Grafana Deployment manifest will be created into file:"
echo "$GRAFANA_OUTPUT_FILE"
echo
# Loop variables initialization
@@ -286,7 +332,7 @@ if [ "$to_process" ]; then
echo
echo "# Size limit not reached ($bytes_to_process). Adding all files into basic configmap"
echo
addConfigMapHeader >> $OUTPUT_FILE || { echo "ERROR in call to addConfigMapHeader function"; exit 1; }
addConfigMapHeader $n >> $OUTPUT_FILE || { echo "ERROR in call to addConfigMapHeader function"; exit 1; }
else
echo
echo "# Size limit not reached ($bytes_to_process). Adding remaining files into configmap with id $n"
@@ -302,24 +348,50 @@ echo "# Process completed, configmap created: $(basename $OUTPUT_FILE)"
echo "# Summary"
echo "# Total files processed: $total_files_processed"
echo "# Total amount of ConfigMaps inside the manifest: $total_configmaps_created"
echo
# Grafana deployment Processing (for every configmap)
#prepareGrafanaDeploymentManifest "$total_configmaps_created"
VOLUMES=""
VOLUME_MOUNTS=""
WATCH_DIR=""
for (( i=0; i<$total_configmaps_created; i++ )); do
configmap="$CONFIGMAP_DASHBOARD_PREFIX-$i"
echo "# Preparing grafana deployment to support configmap: $configmap"
test "$VOLUME_MOUNTS" && VOLUME_MOUNTS="$VOLUME_MOUNTS\n- name: $configmap\n mountPath: /var/$configmap" || VOLUME_MOUNTS="- name: $configmap\n mountPath: /var/$configmap"
test "$VOLUMES" && VOLUMES="$VOLUMES\n- name: $configmap\n configMap:\n name: $configmap" || VOLUMES="- name: $configmap\n configMap:\n name: $configmap"
test "$WATCH_DIR" && WATCH_DIR="$WATCH_DIR\n- '--watch-dir=/var/$configmap'" || WATCH_DIR="- '--watch-dir=/var/$configmap'"
# echo "DEBUG:"
# echo "VOLUMES: $VOLUMES"
# echo "VOLUME_MOUNTS: $VOLUME_MOUNTS"
# echo "WATCH_DIR: $WATCH_DIR"
echo
done
echo "# Processing grafana deployment template into $GRAFANA_OUTPUT_FILE"
sed -e "s#XXX_VOLUMES_XXX#$(indentMultiLineString 6 "$VOLUMES")#" \
-e "s#XXX_VOLUME_MOUNTS_XXX#$(indentMultiLineString 8 "$VOLUME_MOUNTS")#" \
-e "s#XXX_WATCH_DIR_XXX#$(indentMultiLineString 10 "$WATCH_DIR")#" \
$GRAFANA_DEPLOYMENT_TEMPLATE > $GRAFANA_OUTPUT_FILE
# If output file is empty we can delete it and exit
test ! -s "$OUTPUT_FILE" && { echo "# Configmap empty, deleting file"; rm $OUTPUT_FILE; exit 0; }
test ! -s "$GRAFANA_OUTPUT_FILE" && { echo "# Configmap empty, deleting file"; rm $GRAFANA_OUTPUT_FILE; exit 0; }
if [ "$APPLY_CONFIGMAP" = "true" ]; then
test -x "$(which kubectl)" || { echo "ERROR: kubectl command not available. Apply configmap not possible"; exit 1; }
echo
echo "# Applying configuration with $APPLY_TYPE method on namespace $NAMESPACE"
if kubectl -n $NAMESPACE $APPLY_TYPE -f "$OUTPUT_FILE"; then
echo
echo "# ConfigMap updated. Wait until grafana-watcher applies the changes and reloads the dashboards."
echo "# ConfigMap updated. Updating grafana deployment"
kubectl -n $NAMESPACE $APPLY_TYPE -f "$GRAFANA_OUTPUT_FILE" || { echo "Error applying Grafana deployment. Check yaml file: $GRAFANA_OUTPUT_FILE"; exit 1; }
else
echo
echo "ERROR APPLYING CONFIGURATION. Check yaml file"
echo "$OUTPUT_FILE"
echo "Error applying Configmap. Check yaml file: $OUTPUT_FILE"
fi
else
echo
echo "# To apply the new configMap to your k8s system do something like:"
echo "kubectl -n monitoring $APPLY_TYPE -f $(basename $OUTPUT_FILE)"
echo "kubectl -n monitoring $APPLY_TYPE -f $OUTPUT_FILE"
echo "kubectl -n monitoring $APPLY_TYPE -f $GRAFANA_OUTPUT_FILE"
echo
fi

3
hack/grafana-dashboards-configmap-generator/output/README.md
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@@ -1,2 +1 @@
### By default, this directory will include all generated manifests (if -o is not used)
### With -o, --output-file option we can force the tool to generate a file wherever we want
### This directory will include all generated manifests if no specific options are given

74
hack/grafana-dashboards-configmap-generator/templates/grafana-deployment-original.yaml Normal file
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@@ -0,0 +1,74 @@
apiVersion: apps/v1beta1
kind: Deployment
metadata:
name: grafana
spec:
replicas: 1
template:
metadata:
labels:
app: grafana
spec:
containers:
- name: grafana
image: grafana/grafana:4.4.1
env:
- name: GF_AUTH_BASIC_ENABLED
value: "true"
- name: GF_AUTH_ANONYMOUS_ENABLED
value: "true"
- name: GF_SECURITY_ADMIN_USER
valueFrom:
secretKeyRef:
name: grafana-credentials
key: user
- name: GF_SECURITY_ADMIN_PASSWORD
valueFrom:
secretKeyRef:
name: grafana-credentials
key: password
volumeMounts:
- name: grafana-storage
mountPath: /var/grafana-storage
ports:
- name: web
containerPort: 3000
resources:
requests:
memory: 100Mi
cpu: 100m
limits:
memory: 200Mi
cpu: 200m
- name: grafana-watcher
image: quay.io/coreos/grafana-watcher:v0.0.8
args:
- '--watch-dir=/var/grafana-dashboards'
- '--grafana-url=http://localhost:3000'
env:
- name: GRAFANA_USER
valueFrom:
secretKeyRef:
name: grafana-credentials
key: user
- name: GRAFANA_PASSWORD
valueFrom:
secretKeyRef:
name: grafana-credentials
key: password
resources:
requests:
memory: "16Mi"
cpu: "50m"
limits:
memory: "32Mi"
cpu: "100m"
volumeMounts:
- name: grafana-dashboards
mountPath: /var/grafana-dashboards
volumes:
- name: grafana-storage
emptyDir: {}
- name: grafana-dashboards
configMap:
name: grafana-dashboards

71
hack/grafana-dashboards-configmap-generator/templates/grafana-deployment-template.yaml Normal file
View File

@@ -0,0 +1,71 @@
apiVersion: apps/v1beta1
kind: Deployment
metadata:
name: grafana
spec:
replicas: 1
template:
metadata:
labels:
app: grafana
spec:
containers:
- name: grafana
image: grafana/grafana:4.4.1
env:
- name: GF_AUTH_BASIC_ENABLED
value: "true"
- name: GF_AUTH_ANONYMOUS_ENABLED
value: "true"
- name: GF_SECURITY_ADMIN_USER
valueFrom:
secretKeyRef:
name: grafana-credentials
key: user
- name: GF_SECURITY_ADMIN_PASSWORD
valueFrom:
secretKeyRef:
name: grafana-credentials
key: password
volumeMounts:
- name: grafana-storage
mountPath: /var/grafana-storage
ports:
- name: web
containerPort: 3000
resources:
requests:
memory: 100Mi
cpu: 100m
limits:
memory: 200Mi
cpu: 200m
- name: grafana-watcher
image: quay.io/coreos/grafana-watcher:v0.0.8
args:
XXX_WATCH_DIR_XXX
- '--grafana-url=http://localhost:3000'
env:
- name: GRAFANA_USER
valueFrom:
secretKeyRef:
name: grafana-credentials
key: user
- name: GRAFANA_PASSWORD
valueFrom:
secretKeyRef:
name: grafana-credentials
key: password
resources:
requests:
memory: "16Mi"
cpu: "50m"
limits:
memory: "32Mi"
cpu: "100m"
volumeMounts:
XXX_VOLUME_MOUNTS_XXX
volumes:
- name: grafana-storage
emptyDir: {}
XXX_VOLUMES_XXX

4
hack/scripts/generate-manifests.sh
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@@ -10,8 +10,10 @@ hack/scripts/generate-rules-configmap.sh > manifests/prometheus/prometheus-k8s-r
# Max Size per ConfigMap: 240000
# Input dir: assets/grafana
# output file: manifests/grafana/grafana-dashboards.yaml
# grafana deployment output file: manifests/grafana/grafana-deployment.yaml
test -f manifests/grafana/grafana-dashboards.yaml && rm -f manifests/grafana/grafana-dashboards.yaml
hack/grafana-dashboards-configmap-generator/bin/grafana_dashboards_generate.sh -s 240000 -i assets/grafana -o manifests/grafana/grafana-dashboards.yaml
test -f manifests/grafana/grafana-deployment.yaml && rm -f manifests/grafana/grafana-deployment.yaml
hack/grafana-dashboards-configmap-generator/bin/grafana_dashboards_generate.sh -s 240000 -i assets/grafana -o manifests/grafana/grafana-dashboards.yaml -g manifests/grafana/grafana-deployment.yaml
# Generate Grafana Credentials Secret
hack/scripts/generate-grafana-credentials-secret.sh admin admin > manifests/grafana/grafana-credentials.yaml

18
manifests/grafana/grafana-dashboards.yaml
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@@ -1,7 +1,7 @@
apiVersion: v1
kind: ConfigMap
metadata:
name: grafana-dashboards
name: grafana-dashboards-0
data:
deployment-dashboard.json: |+
{
@@ -821,7 +821,7 @@ data:
"timezone": "browser",
"title": "Deployment",
"version": 1
},
} ,
"inputs": [
{
"name": "DS_PROMETHEUS",
@@ -1882,7 +1882,7 @@ data:
"timezone": "browser",
"title": "Kubernetes Capacity Planing",
"version": 4
},
} ,
"inputs": [
{
"name": "DS_PROMETHEUS",
@@ -2628,7 +2628,7 @@ data:
"timezone": "",
"title": "Kubernetes Cluster Health",
"version": 12
},
} ,
"inputs": [
{
"name": "DS_PROMETHEUS",
@@ -3537,7 +3537,7 @@ data:
"timezone": "",
"title": "Kubernetes Cluster Status",
"version": 22
},
} ,
"inputs": [
{
"name": "DS_PROMETHEUS",
@@ -4213,7 +4213,7 @@ data:
"timezone": "",
"title": "Kubernetes Control Plane Status",
"version": 11
},
} ,
"inputs": [
{
"name": "DS_PROMETHEUS",
@@ -4660,7 +4660,7 @@ data:
"timezone": "browser",
"title": "Kubernetes Resource Requests",
"version": 2
},
} ,
"inputs": [
{
"name": "DS_PROMETHEUS",
@@ -5565,7 +5565,7 @@ data:
"timezone": "browser",
"title": "Nodes",
"version": 2
},
} ,
"inputs": [
{
"name": "DS_PROMETHEUS",
@@ -6010,7 +6010,7 @@ data:
"timezone": "browser",
"title": "Pods",
"version": 1
},
} ,
"inputs": [
{
"name": "DS_PROMETHEUS",

10
manifests/grafana/grafana-deployment.yaml
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@@ -43,7 +43,7 @@ spec:
- name: grafana-watcher
image: quay.io/coreos/grafana-watcher:v0.0.8
args:
- '--watch-dir=/var/grafana-dashboards'
- '--watch-dir=/var/grafana-dashboards-0'
- '--grafana-url=http://localhost:3000'
env:
- name: GRAFANA_USER
@@ -64,11 +64,11 @@ spec:
memory: "32Mi"
cpu: "100m"
volumeMounts:
- name: grafana-dashboards
mountPath: /var/grafana-dashboards
- name: grafana-dashboards-0
mountPath: /var/grafana-dashboards-0
volumes:
- name: grafana-storage
emptyDir: {}
- name: grafana-dashboards
- name: grafana-dashboards-0
configMap:
name: grafana-dashboards
name: grafana-dashboards-0