mirror of https://github.com/fluxcd/cli-utils.git
138 lines
3.8 KiB
Markdown
138 lines
3.8 KiB
Markdown
[kind]: https://github.com/kubernetes-sigs/kind
|
|
|
|
# Demo: Server Side Apply
|
|
|
|
This demo shows how to invoke server-side apply,
|
|
instead of the default client-side apply.
|
|
|
|
First define a place to work:
|
|
|
|
<!-- @makeWorkplace @testE2EAgainstLatestRelease -->
|
|
```
|
|
DEMO_HOME=$(mktemp -d)
|
|
```
|
|
|
|
Alternatively, use
|
|
|
|
> ```
|
|
> DEMO_HOME=~/hello
|
|
> ```
|
|
|
|
## Establish the base
|
|
|
|
<!-- @createBase @testE2EAgainstLatestRelease -->
|
|
```
|
|
BASE=$DEMO_HOME/base
|
|
mkdir -p $BASE
|
|
OUTPUT=$DEMO_HOME/output
|
|
mkdir -p $OUTPUT
|
|
GREEN='\033[0;32m'
|
|
RED='\033[0;31m'
|
|
NC='\033[0m' # No Color
|
|
|
|
function expectedOutputLine() {
|
|
if ! grep -q "$@" "$OUTPUT/status"; then
|
|
echo -e "${RED}Error: output line not found${NC}"
|
|
echo -e "${RED}Expected: $@${NC}"
|
|
exit 1
|
|
else
|
|
echo -e "${GREEN}Success: output line found${NC}"
|
|
fi
|
|
}
|
|
```
|
|
|
|
## Create the first "app"
|
|
|
|
Create the config yaml for two config maps: (cm-a, cm-b).
|
|
|
|
<!-- @createFirstConfigMaps @testE2EAgainstLatestRelease-->
|
|
```
|
|
cat <<EOF >$BASE/config-map-a.yaml
|
|
apiVersion: v1
|
|
kind: ConfigMap
|
|
metadata:
|
|
name: cm-a
|
|
labels:
|
|
name: test-config-map-label
|
|
EOF
|
|
|
|
cat <<EOF >$BASE/config-map-b.yaml
|
|
apiVersion: v1
|
|
kind: ConfigMap
|
|
metadata:
|
|
name: cm-b
|
|
labels:
|
|
name: test-config-map-label
|
|
data:
|
|
foo: sean
|
|
EOF
|
|
```
|
|
|
|
## Run end-to-end tests
|
|
|
|
The following requires installation of [kind].
|
|
|
|
Delete any existing kind cluster and create a new one. By default the name of the cluster is "kind".
|
|
|
|
<!-- @deleteAndCreateKindCluster @testE2EAgainstLatestRelease -->
|
|
```
|
|
kind delete cluster
|
|
kind create cluster
|
|
```
|
|
|
|
Use the kapply init command to generate the inventory template. This contains
|
|
the namespace and inventory id used by apply to create inventory objects.
|
|
<!-- @createInventoryTemplate @testE2EAgainstLatestRelease-->
|
|
```
|
|
kapply init $BASE | tee $OUTPUT/status
|
|
expectedOutputLine "namespace: default is used for inventory object"
|
|
```
|
|
|
|
Apply the "app" to the cluster. All the config maps should be created, and
|
|
no resources should be pruned.
|
|
<!-- @runServerSideApply @testE2EAgainstLatestRelease -->
|
|
```
|
|
kapply apply $BASE --server-side --reconcile-timeout=1m | tee $OUTPUT/status
|
|
expectedOutputLine "configmap/cm-a apply successful"
|
|
expectedOutputLine "configmap/cm-b apply successful"
|
|
expectedOutputLine "apply result: 2 attempted, 2 successful, 0 skipped, 0 failed"
|
|
expectedOutputLine "reconcile result: 2 attempted, 2 successful, 0 skipped, 0 failed, 0 timed out"
|
|
|
|
# There should be only one inventory object
|
|
kubectl get cm --selector='cli-utils.sigs.k8s.io/inventory-id' --no-headers | wc -l | tee $OUTPUT/status
|
|
expectedOutputLine "1"
|
|
# There should be two config maps that are not the inventory object
|
|
kubectl get cm --selector='name=test-config-map-label' --no-headers | wc -l | tee $OUTPUT/status
|
|
expectedOutputLine "2"
|
|
# ConfigMap cm-a had been created in the cluster
|
|
kubectl get configmap/cm-a --no-headers | wc -l | tee $OUTPUT/status
|
|
expectedOutputLine "1"
|
|
# ConfigMap cm-b had been created in the cluster
|
|
kubectl get configmap/cm-b --no-headers | wc -l | tee $OUTPUT/status
|
|
expectedOutputLine "1"
|
|
```
|
|
|
|
Update a config map to update a field owned by the default field manager.
|
|
Update both config maps, using a different field-manager to create a
|
|
conflict, but the the --force-conflicts flag to overwrite successfully.
|
|
The conflicting field is "data.foo".
|
|
<!-- @runServerSideApplyWithForceConflicts @testE2EAgainstLatestRelease -->
|
|
```
|
|
cat <<EOF >$BASE/config-map-b.yaml
|
|
apiVersion: v1
|
|
kind: ConfigMap
|
|
metadata:
|
|
name: cm-b
|
|
labels:
|
|
name: test-config-map-label
|
|
data:
|
|
foo: baz
|
|
EOF
|
|
|
|
kapply apply $BASE --server-side --field-manager=sean --force-conflicts --reconcile-timeout=1m | tee $OUTPUT/status
|
|
expectedOutputLine "configmap/cm-a apply successful"
|
|
expectedOutputLine "configmap/cm-b apply successful"
|
|
expectedOutputLine "apply result: 2 attempted, 2 successful, 0 skipped, 0 failed"
|
|
expectedOutputLine "reconcile result: 2 attempted, 2 successful, 0 skipped, 0 failed, 0 timed out"
|
|
```
|