### Install Graffiti

Source: https://github.com/skydive-project/skydive/blob/master/graffiti/README.md

Use 'go get' to install the Graffiti package. This command fetches and installs the Graffiti library into your Go workspace.

```console
go get github.com/skydive-project/skydive/graffiti
```

--------------------------------

### Start a Graffiti Hub

Source: https://github.com/skydive-project/skydive/blob/master/graffiti/README.md

Launches a Graffiti hub instance with embedded etcd for configuration. This is a basic command to get a hub running.

```console
$ graffiti hub --embedded-etcd
```

--------------------------------

### Deploy Skydive with Helm

Source: https://github.com/skydive-project/skydive/blob/master/README.md

Install the helm-git plugin, add the Skydive Helm repository, and then install the Skydive analyzer and agent. Port-forward the analyzer service to access the Web UI.

```bash
helm plugin install https://github.com/aslafy-z/helm-git --version 0.10.0
```

```bash
helm repo add skydive git+https://github.com/skydive-project/skydive@contrib/charts
```

```bash
helm repo update
```

```bash
helm install skydive-analyzer skydive/skydive-analyzer
```

```bash
helm install skydive-agent skydive/skydive-agent
```

```bash
kubectl port-forward service/skydive-analyzer 8082:8082
```

--------------------------------

### View Skydive Template Parameters

Source: https://github.com/skydive-project/skydive/blob/master/contrib/openshift/README.md

Displays the available installation parameters for the Skydive OpenShift template. This helps in customizing the deployment.

```bash
$ VERSION=v0.20.1
$ oc process --parameters -f https://raw.githubusercontent.com/skydive-project/skydive/${VERSION}/contrib/openshift/skydive-template.yaml
```

--------------------------------

### Install Skydive on Kubernetes

Source: https://github.com/skydive-project/skydive/blob/master/contrib/kubernetes/README.md

Apply the Skydive Kubernetes manifest to install the tool.

```bash
kubectl apply -f skydive.yaml
```

--------------------------------

### Install Skydive Binary

Source: https://github.com/skydive-project/skydive/blob/master/README.md

Download the latest Skydive binary and make it executable. Ensure it's placed in a directory included in your system's PATH.

```bash
curl -Lo - https://github.com/skydive-project/skydive-binaries/raw/jenkins-builds/skydive-latest.gz | gzip -d > skydive && chmod +x skydive && sudo mv skydive /usr/local/bin/
```

--------------------------------

### Get Skydive UI Access Info for ClusterIP Service

Source: https://github.com/skydive-project/skydive/blob/master/contrib/charts/skydive-analyzer/templates/NOTES.txt

Prints service details for ClusterIP services, guiding users on how to access the Skydive UI.

```bash
export UI_SERVICE=$(kubectl get --namespace {{ .Release.Namespace }} services {{ template "servicename" . }})
echo -e "To access Skydive UI use details from\n\n$UI_SERVICE"
```

--------------------------------

### Set up Skydive with Docker Compose

Source: https://github.com/skydive-project/skydive/blob/master/README.md

Download the Docker Compose configuration file and use it to start Skydive with an Elasticsearch backend for history support. Access the Web UI at http://localhost:8082.

```bash
curl -o docker-compose.yml https://raw.githubusercontent.com/skydive-project/skydive/master/contrib/docker/docker-compose.yml
```

```bash
docker-compose up
```

--------------------------------

### Run Skydive All-in-One

Source: https://github.com/skydive-project/skydive/blob/master/README.md

Start Skydive in all-in-one mode, which includes the analyzer and agent. Access the Web UI at http://localhost:8082.

```bash
SKYDIVE_ETCD_DATA_DIR=/tmp SKYDIVE_ANALYZER_LISTEN=0.0.0.0:8082 sudo -E /usr/local/bin/skydive allinone
```

--------------------------------

### Use Skydive Client with Docker

Source: https://github.com/skydive-project/skydive/blob/master/README.md

Run the Skydive command-line client within a Docker container to query network topology. This example performs a Gremlin query to list all vertices.

```bash
docker run --net=host -ti skydive/skydive client query "g.V()"
```

--------------------------------

### Query Nodes by Metadata

Source: https://github.com/skydive-project/skydive/blob/master/graffiti/README.md

Executes a Gremlin query to find nodes based on their metadata. This example filters nodes that have 'MyValue' set to 456.

```console
$ graffiti client query "G.V().Has('MyValue', 456)
[
	{
		"ID": "b107a00e-9119-464e-4dc2-4216926c4769",
		"Metadata": {
			"MyValue": "456",
			"Name": "TestNode2"
		},
		"Host": "lezordi",
		"Origin": "cli.lezordi",
		"CreatedAt": 1607037657642,
		"UpdatedAt": 1607037657642,
		"DeletedAt": null,
		"Revision": 1
	}
]
```

--------------------------------

### Get Skydive UI URL for LoadBalancer Service

Source: https://github.com/skydive-project/skydive/blob/master/contrib/charts/skydive-analyzer/templates/NOTES.txt

Exports the UI port and IP address for LoadBalancer services to access the Skydive UI.

```bash
export UI_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ template "servicename" . }})
export UI_IP=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.status.loadBalancer.ingress[0].ip}" services {{ template "servicename" . }})
echo "Skydive UI is running at: http://$UI_IP:$UI_PORT"
```

--------------------------------

### Get Skydive UI URL for NodePort Service

Source: https://github.com/skydive-project/skydive/blob/master/contrib/charts/skydive-analyzer/templates/NOTES.txt

Exports the UI port and IP address for NodePort services to access the Skydive UI.

```bash
export UI_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ template "servicename" . }})
export UI_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
echo "Skydive UI is running at: http://$UI_IP:$UI_PORT"
```

--------------------------------

### Query Edges and Related Nodes

Source: https://github.com/skydive-project/skydive/blob/master/graffiti/README.md

Performs a Gremlin query to find edges with a specific relation type and then filters the incoming vertices based on metadata. This example finds edges of type 'myrelation' and then selects incoming vertices with 'MyValue' less than 200.

```console
$ graffiti client query "G.E().Has('RelationType', 'myrelation').InV('MyValue', LT(200))"
[
	{
		"ID": "bf912bde-66be-461b-7b2f-15c9e1a3de53",
		"Metadata": {
			"MyValue": "123",
			"Name": "TestNode"
		},
		"Host": "lezordi",
		"Origin": "cli.lezordi",
		"CreatedAt": 1607037595421,
		"UpdatedAt": 1607037595421,
		"DeletedAt": null,
		"Revision": 1
	}
]
```

--------------------------------

### Create Skydive Project

Source: https://github.com/skydive-project/skydive/blob/master/contrib/openshift/README.md

Creates a new OpenShift project for Skydive and sets it as the current project. Use an empty node selector to ensure Skydive runs on all nodes.

```bash
oc adm new-project --node-selector='' skydive
oc project skydive
```

--------------------------------

### Deploy Skydive Analyzer and Agents

Source: https://github.com/skydive-project/skydive/blob/master/contrib/openshift/README.md

Deploys the Skydive analyzer and agents using the OpenShift template. Adjust the VERSION variable to the desired Skydive version.

```bash
# adjust VERSION for the current version - for example: v0.20.1 or master
VERSION=master
oc process -f https://raw.githubusercontent.com/skydive-project/skydive/${VERSION}/contrib/openshift/skydive-template.yaml | oc apply -f -
```

--------------------------------

### Create a Node with Metadata

Source: https://github.com/skydive-project/skydive/blob/master/graffiti/README.md

Injects a new node into the graph using the Graffiti client. Specify node name, type, and metadata. The output shows the created node's details.

```console
$ graffiti client node create --node-name TestNode --node-type mytype --metadata MyValue=123
{
  "ID": "bf912bde-66be-461b-7b2f-15c9e1a3de53",
  "Metadata": {
    "MyValue": "123",
    "Name": "TestNode"
  },
  "Host": "lezordi",
  "Origin": "cli.lezordi",
  "CreatedAt": 1607037595421,
  "UpdatedAt": 1607037595421,
  "DeletedAt": null,
  "Revision": 1
}
```

```console
$ graffiti client node create --node-name TestNode2 --node-type mytype --metadata MyValue=456
{
  "ID": "b107a00e-9119-464e-4dc2-4216926c4769",
  "Metadata": {
    "MyValue": "456",
    "Name": "TestNode2"
  },
  "Host": "lezordi",
  "Origin": "cli.lezordi",
  "CreatedAt": 1607037657642,
  "UpdatedAt": 1607037657642,
  "DeletedAt": null,
  "Revision": 1
}
```

--------------------------------

### Run Skydive with Docker

Source: https://github.com/skydive-project/skydive/blob/master/README.md

Deploy Skydive using a Docker container in all-in-one mode. Mount necessary volumes for Docker socket and network namespaces. Access the Web UI at http://localhost:8082.

```bash
docker run -d --privileged --pid=host --net=host -p 8082:8082 -p 8081:8081 \
    -e SKYDIVE_ANALYZER_LISTEN=0.0.0.0:8082 \
    -v /var/run/docker.sock:/var/run/docker.sock -v /run/netns:/var/run/netns \
    skydive/skydive allinone
```

--------------------------------

### Run Skydive UI with Docker

Source: https://github.com/skydive-project/skydive/blob/master/graffiti/README.md

Launches the Skydive UI in a Docker container, exposing it on port 8080. Access the UI by navigating to http://localhost:8080 in your browser.

```console
$ docker run -p 8080:8080 skydive/skydive-ui
```

--------------------------------

### Deploy Skydive Flow Exporter

Source: https://github.com/skydive-project/skydive/blob/master/contrib/openshift/README.md

Deploys the Skydive flow exporter using its OpenShift template. Ensure the VERSION variable is set to the correct Skydive version.

```bash
# adjust VERSION for the current version - for example: v0.20.1 or master
VERSION=master
oc process -f https://raw.githubusercontent.com/skydive-project/skydive/${VERSION}/contrib/openshift/skydive-flow-exporter-template.yaml | oc apply -f -
```

--------------------------------

### Deploy Skydive with Custom Log Level

Source: https://github.com/skydive-project/skydive/blob/master/contrib/openshift/README.md

Applies the Skydive OpenShift template with a custom log level, such as DEBUG. This is useful for troubleshooting.

```bash
# Installation with loglevel debug:
$ oc process --param=SKYDIVE_LOGGING_LEVEL=DEBUG -f https://raw.githubusercontent.com/skydive-project/skydive/${VERSION}/contrib/openshift/skydive-template.yaml  | oc apply -f -
```

--------------------------------

### Deploy Skydive to a Specific Namespace

Source: https://github.com/skydive-project/skydive/blob/master/contrib/kubernetes/README.md

Deploy Skydive to the `mynamespace` instead of the default namespace by updating the `skydive.yaml` manifest and applying it with the `-n` flag.

```bash
cat skydive.yaml | sed -e "s/namespace: default/namespace: mynamespace/" | kubectl apply -n mynamespace -f -
```

--------------------------------

### Default UI Configuration in JavaScript

Source: https://github.com/skydive-project/skydive/blob/master/statics/ui/index.html

Defines default settings for the Skydive UI, including bandwidth thresholds and theme. These can be extended by global variables.

```javascript
var defaultConfig = { "bandwidth_absolute_active": 1, "bandwidth_absolute_alert": 1000, "bandwidth_absolute_warning": 100, "bandwidth_relative_active": 0.1, "bandwidth_relative_alert": 0.8, "bandwidth_relative_warning": 0.5, "bandwidth_threshold": "relative", "bandwidth_update_rate": 5, "ssh_enabled": false, "theme": "dark", "topology": { "favorites": {}, }, }
var globalVars = << .GlobalVars >>
uiConfig = $.extend({}, defaultConfig, globalVars["ui"]);
var allPermissions = << .Permissions >>;
<< range $i, $asset := .ExtraAssets >>
<< if eq $asset.Ext ".css" >>  << end >>
<< if eq $asset.Ext ".js" >> << end >>
<< end >>
```

--------------------------------

### Check Skydive Deployment Status

Source: https://github.com/skydive-project/skydive/blob/master/contrib/openshift/README.md

Provides commands to verify the Skydive deployment by checking the overall status, pods, daemonsets, services, and routes.

```bash
# Overall status:  
oc status
# List all pods:  
oc get pods
# List all daemonsets:  
oc get daemonset
# List all services:  
oc get services
# List all routes:  
oc get routes
```

--------------------------------

### Access Skydive UI Endpoint

Source: https://github.com/skydive-project/skydive/blob/master/contrib/openshift/README.md

Retrieves the URL for the Skydive UI and analyzer endpoints. Use these URLs to access the Skydive interface in your browser.

```bash
# point your browser to skydive UI end-point  
oc get route skydive-ui -o jsonpath='http://{.spec.host}'
# Specify analyzer endpoint   
oc get route skydive-analyzer -o jsonpath='http://{.spec.host}'
```

--------------------------------

### Link Nodes with an Edge

Source: https://github.com/skydive-project/skydive/blob/master/graffiti/README.md

Creates an edge between two existing nodes using their IDs. Specify parent, child, edge type, and metadata. The output confirms the edge creation.

```console
$ graffiti client edge create --parent bf912bde-66be-461b-7b2f-15c9e1a3de53 --child b107a00e-9119-464e-4dc2-4216926c4769 --edge-type myrelation --metadata MyValue=789
{
  "Parent": "bf912bde-66be-461b-7b2f-15c9e1a3de53",
  "Child": "b107a00e-9119-464e-4dc2-4216926c4769",
  "ID": "2fb400a4-671b-4640-73ab-bb025a01ea99",
  "Metadata": {
    "MyValue": "789",
    "RelationType": "myrelation"
  },
  "Host": "lezordi",
  "Origin": "cli.lezordi",
  "CreatedAt": 1607037881247,
  "UpdatedAt": 1607037881247,
  "DeletedAt": null,
  "Revision": 1
}
```

--------------------------------

### Expose Skydive UI Management Port

Source: https://github.com/skydive-project/skydive/blob/master/contrib/kubernetes/README.md

Forward the Skydive analyzer UI management port (8082) to your local machine for access.

```bash
kubectl port-forward service/skydive-analyzer 8082:8082
```

--------------------------------

### Kubectl Command for Pod Deletion

Source: https://github.com/skydive-project/skydive/blob/master/contrib/kubernetes/samples/README.md

These commands are automatically executed by Skydive after it detects a secret change. They serve to delete the affected pods, prompting Kubernetes to re-create them with the updated secret.

```bash
kubectl delete pod wordpress-<hash>
```

```bash
kubectl delete pod wordpress-mysql-<hash>
```

--------------------------------

### Execute Skydive for Secret Update

Source: https://github.com/skydive-project/skydive/blob/master/contrib/kubernetes/samples/README.md

Use this command to trigger Skydive to re-create pods associated with a specific Kubernetes secret after its configuration has changed. Ensure you replace `<skydive-config-yaml>` with your Skydive configuration file path and `default/mysql-pass` with the actual secret name.

```bash
./skydive.sh -c <skydive-config-yaml> secret default/mysql-pass
```

--------------------------------

### Grant Skydive Privileges

Source: https://github.com/skydive-project/skydive/blob/master/contrib/openshift/README.md

Grants necessary privileges to Skydive components. The analyzer and agent run as privileged containers, and the analyzer requires cluster-reader access to gather cluster information.

```bash
# analyzer and agent run as privileged container
oc adm policy add-scc-to-user privileged -z default
# analyzer need cluster-reader access get all informations from the cluster
oc adm policy add-cluster-role-to-user cluster-reader -z default
```

--------------------------------

### Change Skydive Analyzer Listening Port

Source: https://github.com/skydive-project/skydive/blob/master/contrib/kubernetes/README.md

Modify the Skydive analyzer listening port from 8082 to 18082 by updating the `skydive.yaml` manifest.

```bash
cat skydive.yaml | sed -e s/8082/18082/ | kubectl apply -f -
```

--------------------------------

### Change Etcd Ports for Skydive

Source: https://github.com/skydive-project/skydive/blob/master/contrib/kubernetes/README.md

Adjust the etcd ports from 12379/12380 to 22379/22380 by modifying the `skydive.yaml` manifest.

```bash
cat skydive.yaml | sed -e s/12379/22379/ -e s/12380/22380/ | kubectl apply -f -
```

--------------------------------

### Change Elasticsearch Port for Skydive

Source: https://github.com/skydive-project/skydive/blob/master/contrib/kubernetes/README.md

Update the Elasticsearch port from 9200 to 19200 within the `skydive.yaml` manifest.

```bash
cat skydive.yaml | sed -e s/9200/19200/ | kubectl apply -f -
```

--------------------------------

### Uninstall Skydive from Kubernetes

Source: https://github.com/skydive-project/skydive/blob/master/contrib/kubernetes/README.md

Remove Skydive from your Kubernetes cluster by deleting its manifest.

```bash
kubectl delete -f skydive.yaml
```

--------------------------------

### Change Skydive Agent Listening Port

Source: https://github.com/skydive-project/skydive/blob/master/contrib/kubernetes/README.md

Modify the Skydive agent listening port from 8081 to 18081 by updating the `skydive.yaml` manifest.

```bash
cat skydive.yaml | sed -e s/8081/18081/ | kubectl apply -f -
```

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