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======================================================== ``controllers\_group\_runs\_total`` ``status``, ``group\_name`` Enabled Number of times that a controller process was run, labeled by controller group name ======================================== ================================================== ========== ====... | https://github.com/cilium/cilium/blob/main//Documentation/observability/metrics.rst | main | cilium | [
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.. only:: not (epub or latex or html) WARNING: You are looking at unreleased Cilium documentation. Please use the official rendered version released here: https://docs.cilium.io .. \_install\_metrics: \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* Running Prometheus & Grafana \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\... | https://github.com/cilium/cilium/blob/main//Documentation/observability/grafana.rst | main | cilium | [
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.. only:: not (epub or latex or html) WARNING: You are looking at unreleased Cilium documentation. Please use the official rendered version released here: https://docs.cilium.io .. \_hubble\_intro: \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* Network Observability with Hubble \*\*\*\*\*\*\*\*\*\*\... | https://github.com/cilium/cilium/blob/main//Documentation/observability/hubble/index.rst | main | cilium | [
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.. note:: The following commands use the ``-P`` (``--port-forward``) flag to automatically port-forward the Hubble Relay service from your local machine on port ``4245``. You can also omit the flag and create a port-forward manually with the Cilium CLI: .. code-block:: shell-session $ cilium hubble port-forward ℹ️ Hubb... | https://github.com/cilium/cilium/blob/main//Documentation/observability/hubble/port-forward.rst | main | cilium | [
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.. only:: not (epub or latex or html) WARNING: You are looking at unreleased Cilium documentation. Please use the official rendered version released here: https://docs.cilium.io .. \_hubble\_gsg: .. \_hubble\_ui: \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* Service Map & Hubble UI \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*... | https://github.com/cilium/cilium/blob/main//Documentation/observability/hubble/hubble-ui.rst | main | cilium | [
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.. only:: not (epub or latex or html) WARNING: You are looking at unreleased Cilium documentation. Please use the official rendered version released here: https://docs.cilium.io .. \_hubble\_cli: \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* Inspecting Network Flows with the CLI \*\*\*\*\*\... | https://github.com/cilium/cilium/blob/main//Documentation/observability/hubble/hubble-cli.rst | main | cilium | [
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.. only:: not (epub or latex or html) WARNING: You are looking at unreleased Cilium documentation. Please use the official rendered version released here: https://docs.cilium.io .. \_hubble\_setup: \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* Setting up Hubble Observability \*\*\*\*\*\*\*\*\*\*\*\*\*\... | https://github.com/cilium/cilium/blob/main//Documentation/observability/hubble/setup.rst | main | cilium | [
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flag or ``HUBBLE\_SERVER`` environment variable to set the Hubble server address (default: ``localhost:4245``). For more information, check out Hubble CLI's help message by running ``hubble help status`` or ``hubble help observe`` as well as ``hubble config`` for configuring Hubble CLI. .. note:: If you have :ref:`enab... | https://github.com/cilium/cilium/blob/main//Documentation/observability/hubble/setup.rst | main | cilium | [
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expired" connection timeout=30s error="rpc error: code = Unavailable desc = connection error: desc = \"transport: Error while dialing: dial tcp 10.96.49.4:443: connect: connection refused\"" subsys=hubble-relay time="2025-02-12T21:22:40.265123839Z" level=info msg="Failed to create peer notify client for peers change no... | https://github.com/cilium/cilium/blob/main//Documentation/observability/hubble/setup.rst | main | cilium | [
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.. only:: not (epub or latex or html) WARNING: You are looking at unreleased Cilium documentation. Please use the official rendered version released here: https://docs.cilium.io .. \_hubble\_enable\_tls: \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* Configure TLS with Hubble \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\... | https://github.com/cilium/cilium/blob/main//Documentation/observability/hubble/configuration/tls.rst | main | cilium | [
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set to ``false``, secrets containing the certificates must be created in the ``kube-system`` namespace, and the secret names must be provided to Helm. Provided files must be \*\*base64 encoded\*\* PEM certificates. In addition, the \*\*Common Name (CN)\*\* and \*\*Subject Alternative Name (SAN)\*\* of the certificate f... | https://github.com/cilium/cilium/blob/main//Documentation/observability/hubble/configuration/tls.rst | main | cilium | [
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shell-session $ helm install cert-manager jetstack/cert-manager \ --set webhook.hostNetwork=true \ --set webhook.tolerations='["operator": "Exists"]' Then configure an issuer and install Cilium. .. group-tab:: Helm When using Helm certificates are not automatically renewed. If you encounter issues with expired certific... | https://github.com/cilium/cilium/blob/main//Documentation/observability/hubble/configuration/tls.rst | main | cilium | [
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shell-session $ kubectl exec -it -n kube-system deployment/hubble-cli -- \ hubble observe --server tls://${IP?}:4244 \ --tls-server-name ${SERVERNAME?} \ --tls-ca-cert-files /var/lib/hubble-relay/tls/hubble-server-ca.crt failed to connect to '172.18.0.2:4244': context deadline exceeded: connection error: desc = "error ... | https://github.com/cilium/cilium/blob/main//Documentation/observability/hubble/configuration/tls.rst | main | cilium | [
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depth=0 CN = \*.default.hubble-grpc.cilium.io verify return:1 --- Certificate chain 0 s:CN = \*.default.hubble-grpc.cilium.io i:C = US, ST = San Francisco, L = CA, O = Cilium, OU = Cilium, CN = Cilium CA a:PKEY: id-ecPublicKey, 256 (bit); sigalg: ecdsa-with-SHA256 v:NotBefore: Aug 15 17:39:00 2024 GMT; NotAfter: Aug 15... | https://github.com/cilium/cilium/blob/main//Documentation/observability/hubble/configuration/tls.rst | main | cilium | [
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on the Hubble metrics API If you also want to enable authentication using mTLS on the Hubble metrics API, first create a ConfigMap with a CA certificate to use for verifying client certificates: :: kubectl -n kube-system create configmap hubble-metrics-ca --from-file=ca.crt Then, add the following flags to your Helm co... | https://github.com/cilium/cilium/blob/main//Documentation/observability/hubble/configuration/tls.rst | main | cilium | [
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.. only:: not (epub or latex or html) WARNING: You are looking at unreleased Cilium documentation. Please use the official rendered version released here: https://docs.cilium.io \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* Configuring Hubble exporter \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* \*\*... | https://github.com/cilium/cilium/blob/main//Documentation/observability/hubble/configuration/export.rst | main | cilium | [
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.. \_flow proto: https://github.com/cilium/cilium/blob/main/api/v1/flow/flow.proto Examples include: - To keep all information except pod labels: .. code-block:: shell-session hubble-export-fieldmask: time source.identity source.namespace source.pod\_name destination.identity destination.namespace destination.pod\_name... | https://github.com/cilium/cilium/blob/main//Documentation/observability/hubble/configuration/export.rst | main | cilium | [
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Cluster Mesh Troubleshooting ============================ Install the Cilium CLI ---------------------- .. include:: /installation/cli-download.rst Automatic Verification ---------------------- #. Validate that Cilium pods are healthy and ready: .. code-block:: shell-session cilium status #. Validate that Cluster Mesh ... | https://github.com/cilium/cilium/blob/main//Documentation/operations/troubleshooting_clustermesh.rst | main | cilium | [
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for remote clusters is picked up correctly. For each remote cluster, an info log message ``New remote cluster configuration`` along with the remote cluster name must be logged in the ``cilium-agent`` logs. If the configuration is not found, check the following: \* The ``cilium-clustermesh`` Kubernetes secret is present... | https://github.com/cilium/cilium/blob/main//Documentation/operations/troubleshooting_clustermesh.rst | main | cilium | [
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identities are synchronized correctly by running ``cilium-dbg identity list`` in one of the Cilium pods. It must list identities from all clusters. You can determine what cluster an identity belongs to by looking at the label ``io.cilium.k8s.policy.cluster``. If remote identities are not present, validate that Cilium a... | https://github.com/cilium/cilium/blob/main//Documentation/operations/troubleshooting_clustermesh.rst | main | cilium | [
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.. only:: not (epub or latex or html) WARNING: You are looking at unreleased Cilium documentation. Please use the official rendered version released here: https://docs.cilium.io .. warning:: Read the full upgrade guide to understand all the necessary steps before performing them. Do not upgrade to \ |NEXT\_RELEASE| bef... | https://github.com/cilium/cilium/blob/main//Documentation/operations/upgrade-warning.rst | main | cilium | [
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Service Mesh Troubleshooting ============================ Install the Cilium CLI ---------------------- .. include:: /installation/cli-download.rst Generic ------- #. Validate that the ``ds/cilium`` as well as the ``deployment/cilium-operator`` pods are healthy and ready. .. code-block:: shell-session $ cilium status M... | https://github.com/cilium/cilium/blob/main//Documentation/operations/troubleshooting_servicemesh.rst | main | cilium | [
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content-length: 19 < content-type: text/plain < date: Thu, 07 Jul 2022 12:25:56 GMT < server: envoy < \* Connection #0 to host localhost left intact # Flows for world identity $ kubectl -n kube-system exec ds/cilium -- hubble observe -f --identity 2 Jul 7 12:28:27.970: 127.0.0.1:54704 <- 127.0.0.1:13681 http-response F... | https://github.com/cilium/cilium/blob/main//Documentation/operations/troubleshooting_servicemesh.rst | main | cilium | [
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Defaulted container "cilium-agent" out of: cilium-agent, mount-cgroup (init), apply-sysctl-overwrites (init), mount-bpf-fs (init), clean-cilium-state (init) Jul 7 13:07:46.726: 10.0.0.95:42509 -> default/details-v1-5498c86cf5-cnt9q:9080 to-endpoint FORWARDED (TCP Flags: SYN) Jul 7 13:07:46.726: 10.0.0.95:42509 <- defau... | https://github.com/cilium/cilium/blob/main//Documentation/operations/troubleshooting_servicemesh.rst | main | cilium | [
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.. only:: not (epub or latex or html) WARNING: You are looking at unreleased Cilium documentation. Please use the official rendered version released here: https://docs.cilium.io .. \_admin\_upgrade: \*\*\*\*\*\*\*\*\*\*\*\*\* Upgrade Guide \*\*\*\*\*\*\*\*\*\*\*\*\* .. \_upgrade\_general: This upgrade guide is intended... | https://github.com/cilium/cilium/blob/main//Documentation/operations/upgrade.rst | main | cilium | [
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-------------------------------------------------------------------------------------- :term:`Helm` can be used to either upgrade Cilium directly or to generate a new set of YAML files that can be used to upgrade an existing deployment via ``kubectl``. By default, Helm will generate the new templates using the default ... | https://github.com/cilium/cilium/blob/main//Documentation/operations/upgrade.rst | main | cilium | [
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the upgrade notes specific to |CURRENT\_RELEASE|. Read them carefully and take the suggested actions before upgrading Cilium to |CURRENT\_RELEASE|. For upgrades to earlier releases, see the :prev-docs:`upgrade notes to the previous version `. The only tested upgrade and rollback path is between consecutive minor releas... | https://github.com/cilium/cilium/blob/main//Documentation/operations/upgrade.rst | main | cilium | [
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BPF Host Routing with IPsec however requires `a kernel bugfix <`https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c4327229948879814229b46aa26a750718888503>`\_. You can disable BPF Host Routing with ``--enable-host-legacy-routing=true``. \* Certificate generation with the CronJob method for H... | https://github.com/cilium/cilium/blob/main//Documentation/operations/upgrade.rst | main | cilium | [
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and had this flag explicitly set to ``true``, please unset it and let Cilium v1.18 migrate your rules prior to the upgrade to Cilium v1.19. Azure IPAM users are unaffected by this change, as Cilium continues to use old-style IP rules with Azure IPAM. \* The previously deprecated ``--l2-pod-announcements-interface`` fla... | https://github.com/cilium/cilium/blob/main//Documentation/operations/upgrade.rst | main | cilium | [
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under ``workqueue\_``. In this release any such metrics have been renamed and combined into the correct metric name prefixed with ``cilium\_operator\_``. As well, any remaining Operator k8s workqueue metrics that use the label ``queue\_name`` have had it renamed to ``name`` to be consistent with agent k8s workqueue met... | https://github.com/cilium/cilium/blob/main//Documentation/operations/upgrade.rst | main | cilium | [
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identities so that the numeric identities match those in the kvstore. This allows new and old Cilium instances in the rollout to agree. There are two ways to achieve this: you can either run a one-off ``cilium preflight migrate-identity`` script which will perform a point-in-time copy of all identities from the kvstore... | https://github.com/cilium/cilium/blob/main//Documentation/operations/upgrade.rst | main | cilium | [
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oldIdentity=11730 INFO[0003] Reusing existing global key key="k8s:class=deathstar;k8s:io.cilium.k8s.policy.cluster=default;k8s:io.cilium.k8s.policy.serviceaccount=default;k8s:io.kubernetes.pod.namespace=default;k8s:org=empire;" subsys=allocator INFO[0003] New ID allocated for key in CRD identity=17281 identityLabels="k... | https://github.com/cilium/cilium/blob/main//Documentation/operations/upgrade.rst | main | cilium | [
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on ``--identity-gc-interval`` and ``--identity-heartbeat-timeout`` settings. #. Once all identities have converged, re-deploy the Operator and the Agents with ``--identity-allocation-mode=doublewrite-readcrd``. This will cause Cilium to read identities only from CRDs, but continue to write them to the KVStore. #. Once ... | https://github.com/cilium/cilium/blob/main//Documentation/operations/upgrade.rst | main | cilium | [
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"cilium.io/v2" kind: CiliumNetworkPolicy metadata: name: allow-from-bar namespace: default spec: description: "Allow ingress traffic from bar" endpointSelector: matchLabels: name: foo ingress: - fromEndpoints: - matchLabels: name: bar matchExpressions: - key: io.cilium.k8s.policy.cluster operator: Exists .. \_cnp\_vali... | https://github.com/cilium/cilium/blob/main//Documentation/operations/upgrade.rst | main | cilium | [
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.. only:: not (epub or latex or html) WARNING: You are looking at unreleased Cilium documentation. Please use the official rendered version released here: https://docs.cilium.io .. \_admin\_guide: ############### Troubleshooting ############### This document describes how to troubleshoot Cilium in different deployment ... | https://github.com/cilium/cilium/blob/main//Documentation/operations/troubleshooting.rst | main | cilium | [
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-p cilium-1234 Generic ------- When logged in a host running Cilium, the cilium CLI can be invoked directly, e.g.: .. code-block:: shell-session $ cilium-dbg status KVStore: Ok etcd: 1/1 connected: https://192.168.60.11:2379 - 3.2.7 (Leader) ContainerRuntime: Ok Kubernetes: Ok OK Kubernetes APIs: ["core/v1::Endpoint", ... | https://github.com/cilium/cilium/blob/main//Documentation/operations/troubleshooting.rst | main | cilium | [
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allows to query multiple Hubble instances simultaneously and aggregate the results. See :ref:`hubble\_setup` to enable Hubble Relay if it is not yet enabled and install the Hubble CLI on your local machine. .. include:: /observability/hubble/port-forward.rst You can verify that Hubble Relay can be reached by using the ... | https://github.com/cilium/cilium/blob/main//Documentation/operations/troubleshooting.rst | main | cilium | [
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running on each node. By default when Cilium is run, it launches instances of ``cilium-health`` in the background to determine the overall connectivity status of the cluster. This tool periodically runs bidirectional traffic across multiple paths through the cluster and through each node using different protocols to de... | https://github.com/cilium/cilium/blob/main//Documentation/operations/troubleshooting.rst | main | cilium | [
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for ``bpf-ct-global-any-max`` and ``bpf-ct-global-tcp-max`` can be increased. Setting both of these options will be a trade-off of CPU for ``conntrack-gc-interval``, and for ``bpf-ct-global-any-max`` and ``bpf-ct-global-tcp-max`` the amount of memory consumed. You can track conntrack garbage collection related metrics ... | https://github.com/cilium/cilium/blob/main//Documentation/operations/troubleshooting.rst | main | cilium | [
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code-block:: shell-session kubectl -n kube-system exec -ti cilium-q8wvt -- cilium-dbg endpoint get 59084 .. image:: images/troubleshooting\_policy.png :align: center Importing this dump into a JSON-friendly editor can help browse and navigate the information here. At the top level of the dump, there are two nodes of no... | https://github.com/cilium/cilium/blob/main//Documentation/operations/troubleshooting.rst | main | cilium | [
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this rule creates an identity that represents all IPs within the ``/30`` and therefore, only requires the selector to select 1 identity. FQDN ~~~~ See section on :ref:`isolating the source of toFQDNs issues regarding identities and policy `. etcd (kvstore) ============== Introduction ------------ Cilium can be operated... | https://github.com/cilium/cilium/blob/main//Documentation/operations/troubleshooting.rst | main | cilium | [
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report failure in ``cilium-dbg status``. This will cause the liveness and readiness probe of Kubernetes to fail and Cilium will be restarted. \* A lock is acquired and released to test a write operation which requires quorum. If this operation fails, loss of quorum is reported. If quorum fails for three or more interva... | https://github.com/cilium/cilium/blob/main//Documentation/operations/troubleshooting.rst | main | cilium | [
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0.75, 0.27, 0.15 10:15:16 up 6 days, 7:28, 0 users, load average: 0.14, 0.04, 0.01 List unmanaged Kubernetes pods ------------------------------ Lists all Kubernetes pods in the cluster for which Cilium does \*not\* provide networking. This includes pods running in host-networking mode and pods that were started before... | https://github.com/cilium/cilium/blob/main//Documentation/operations/troubleshooting.rst | main | cilium | [
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-n kube-system exec cilium-kg8lv -- cilium-bugtool [...] $ # Copy the archive from the pod $ kubectl cp kube-system/cilium-kg8lv:/tmp/cilium-bugtool-20180411-155146.166+0000-UTC-266836983.tar /tmp/cilium-bugtool-20180411-155146.166+0000-UTC-266836983.tar [...] .. note:: Please check the archive for sensitive informatio... | https://github.com/cilium/cilium/blob/main//Documentation/operations/troubleshooting.rst | main | cilium | [
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.. only:: not (epub or latex or html) WARNING: You are looking at unreleased Cilium documentation. Please use the official rendered version released here: https://docs.cilium.io .. \_admin\_system\_reqs: \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* System Requirements \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* Before installing ... | https://github.com/cilium/cilium/blob/main//Documentation/operations/system_requirements.rst | main | cilium | [
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recommended to use kernel 5.10 or later (or equivalent such as 4.18 on RHEL 8.10). For a list of features that require newer kernels, see :ref:`advanced\_features`. In order for the eBPF feature to be enabled properly, the following kernel configuration options must be enabled. This is typically the case with distribut... | https://github.com/cilium/cilium/blob/main//Documentation/operations/system_requirements.rst | main | cilium | [
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Key-Value store =============== Cilium optionally uses a distributed Key-Value store to manage, synchronize and distribute security identities across all cluster nodes. The following Key-Value stores are currently supported: - etcd >= 3.1.0 Cilium can be used without a Key-Value store when CRD-based state management is... | https://github.com/cilium/cilium/blob/main//Documentation/operations/system_requirements.rst | main | cilium | [
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ICMP 8/0 egress ``worker-sg`` health checks ======================== =============== ==================== =============== Worker Nodes (``worker-sg``): ======================== =============== ==================== =============== Port Range / Protocol Ingress/Egress Source/Destination Description ======================... | https://github.com/cilium/cilium/blob/main//Documentation/operations/system_requirements.rst | main | cilium | [
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to collide with the main routing table which is between 253-255. Cilium uses the following routing table IDs: ================= ========================================================= Route table ID Purpose ================= ========================================================= 200 IPsec routing rules 202 VTEP ro... | https://github.com/cilium/cilium/blob/main//Documentation/operations/system_requirements.rst | main | cilium | [
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.. only:: not (epub or latex or html) WARNING: You are looking at unreleased Cilium documentation. Please use the official rendered version released here: https://docs.cilium.io .. \_performance\_scalability: Performance & Scalability ========================= Welcome to the performance and scalability guides. This sec... | https://github.com/cilium/cilium/blob/main//Documentation/operations/performance/index.rst | main | cilium | [
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.. only:: not (epub or latex or html) WARNING: You are looking at unreleased Cilium documentation. Please use the official rendered version released here: https://docs.cilium.io .. \_performance\_report: \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* CNI Performance Benchmark \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\... | https://github.com/cilium/cilium/blob/main//Documentation/operations/performance/benchmark.rst | main | cilium | [
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are being used, all test configurations can achieve transfer rates close to the line-rate of the network interface. The main difference is the CPU resources required to achieve it: .. image:: images/bench\_tcp\_stream\_32\_streams\_cpu.png .. \_request\_response: Request/Response Rate (TCP\_RR) ========================... | https://github.com/cilium/cilium/blob/main//Documentation/operations/performance/benchmark.rst | main | cilium | [
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as possible. This is by far the most stressful test for the system. .. image:: images/bench\_tcp\_crr\_32\_processes.png This benchmark outlines major differences between the tested configurations. In particular, it illustrates the overall cost of iptables which is optimized to perform most of the required work per con... | https://github.com/cilium/cilium/blob/main//Documentation/operations/performance/benchmark.rst | main | cilium | [
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are performed using standardized configuration. Upon popular request, we have included measurements for Calico for direct comparison. ============================ =================================================================== Configuration Name Description ============================ =============================... | https://github.com/cilium/cilium/blob/main//Documentation/operations/performance/benchmark.rst | main | cilium | [
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in tunneling (:ref:`arch\_overlay`) mode: .. code-block:: shell-session $ ansible-playbook -e mode=tunneling -i packet-hosts.ini playbooks/install-k8s-cilium.yaml $ ansible-playbook -e conf=vxlan -i packet-hosts.ini playbooks/run-kubenetbench.yaml The first command configures Cilium to use tunneling (``-e mode=tunnelin... | https://github.com/cilium/cilium/blob/main//Documentation/operations/performance/benchmark.rst | main | cilium | [
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.. only:: not (epub or latex or html) WARNING: You are looking at unreleased Cilium documentation. Please use the official rendered version released here: https://docs.cilium.io .. \_performance\_tuning: \*\*\*\*\*\*\*\*\*\*\*\* Tuning Guide \*\*\*\*\*\*\*\*\*\*\*\* This guide helps you optimize a Cilium installation f... | https://github.com/cilium/cilium/blob/main//Documentation/operations/performance/tuning.rst | main | cilium | [
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a GitHub issue if you experience any problems. Known issues with this feature are tracked `here `\_. .. note:: In-place upgrade by just enabling netkit on an existing cluster is not possible since the CNI plugin cannot simply replace veth with netkit after Pod creation. Also, running both flavors in parallel is current... | https://github.com/cilium/cilium/blob/main//Documentation/operations/performance/tuning.rst | main | cilium | [
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is enabled and the current GSO/GRO maximum sizes are less than 192k it will try to increase them, respectively when BIG TCP is disabled and the current maximum values are more than 64k it will try to decrease them. BIG TCP doesn't require network interface MTU changes. .. note:: In-place upgrade by just enabling BIG TC... | https://github.com/cilium/cilium/blob/main//Documentation/operations/performance/tuning.rst | main | cilium | [
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Note that after toggling the IPv4 BIG TCP option the Kubernetes Pods must be restarted for the changes to take effect. To validate whether your installation is running with IPv4 BIG TCP, run ``cilium status`` in any of the Cilium pods and look for the line reporting the status for "IPv4 BIG TCP" which should state "ena... | https://github.com/cilium/cilium/blob/main//Documentation/operations/performance/tuning.rst | main | cilium | [
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length on a per-node basis using a :ref:`CiliumNodeConfig object `. :: apiVersion: cilium.io/v2 kind: CiliumNodeConfig metadata: namespace: kube-system name: set-hubble-event-queue spec: nodeSelector: matchLabels: # Update selector to match your nodes io.cilium.update-hubble-event-queue: "true" defaults: hubble-event-q... | https://github.com/cilium/cilium/blob/main//Documentation/operations/performance/tuning.rst | main | cilium | [
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.. tabs:: .. group-tab:: Cilium CLI .. code-block:: shell-session cilium hubble disable .. group-tab:: Helm .. cilium-helm-install:: :namespace: kube-system :set: hubble.enabled=false MTU === The maximum transfer unit (MTU) can have a significant impact on the network throughput of a configuration. Cilium will automati... | https://github.com/cilium/cilium/blob/main//Documentation/operations/performance/tuning.rst | main | cilium | [
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packet hits the FQ queueing discipline on the physical device in the host namespace. .. note:: In-place upgrade by just enabling BBR on an existing cluster is not possible since Cilium cannot migrate existing sockets over to BBR congestion control. The best way to consume this is to either only enable it on newly built... | https://github.com/cilium/cilium/blob/main//Documentation/operations/performance/tuning.rst | main | cilium | [
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``bpf.mapDynamicSizeRatio`` as opposed to statically sized map configuration. eBPF Map Sizing =============== All eBPF maps are created with upper capacity limits. Insertion beyond the limit would fail or constrain the scalability of the datapath. Cilium is using auto-derived defaults based on the given ratio of the to... | https://github.com/cilium/cilium/blob/main//Documentation/operations/performance/tuning.rst | main | cilium | [
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``network-latency`` and ``network-throughput``, for example. To enable the former, run: .. code-block:: shell-session tuned-adm profile network-latency Set CPU governor to performance ------------------------------- The CPU scaling up and down can impact latency tests and lead to sub-optimal performance. To achieve max... | https://github.com/cilium/cilium/blob/main//Documentation/operations/performance/tuning.rst | main | cilium | [
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.. only:: not (epub or latex or html) WARNING: You are looking at unreleased Cilium documentation. Please use the official rendered version released here: https://docs.cilium.io .. \_identity-relevant-labels: \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* Limiting Identity-Relevant Labels \*\*\*\*\*... | https://github.com/cilium/cilium/blob/main//Documentation/operations/performance/scalability/identity-relevant-labels.rst | main | cilium | [
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the Agent is managing identities, restart the Cilium Agents to pickup the new label pattern. .. code-block:: shell-session kubectl rollout restart -n kube-system ds/cilium .. note:: Configuring Cilium with label patterns via ``labels`` Helm value does \*\*not\*\* override the default set of label patterns. That is to s... | https://github.com/cilium/cilium/blob/main//Documentation/operations/performance/scalability/identity-relevant-labels.rst | main | cilium | [
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.. only:: not (epub or latex or html) WARNING: You are looking at unreleased Cilium documentation. Please use the official rendered version released here: https://docs.cilium.io .. \_scalability\_guide: \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* Scalability report \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* This report is intended ... | https://github.com/cilium/cilium/blob/main//Documentation/operations/performance/scalability/report.rst | main | cilium | [
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used Prometheus v2.18.1 and Grafana v7.0.1 to retrieve and analyze ``etcd``, ``kube-apiserver``, ``cilium`` and ``cilium-operator`` metrics. ^^^^^^^^^^^^^^^^^^^^^^^^^^^ 3. Provision 2 worker nodes ^^^^^^^^^^^^^^^^^^^^^^^^^^^ This helped us to understand if our testing cluster was correctly provisioned and all metrics w... | https://github.com/cilium/cilium/blob/main//Documentation/operations/performance/scalability/report.rst | main | cilium | [
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\* Cilium Operator had a stable 5% CPU consumption while the pods were being created. .. figure:: images/image\_7\_02.png Similar to the behavior seen while increasing the number of worker nodes, adding new pods also increases Cilium memory consumption. \* As we increased the number of pods from 250 to 50000, we saw a ... | https://github.com/cilium/cilium/blob/main//Documentation/operations/performance/scalability/report.rst | main | cilium | [
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to the creation of the previous 250 CNPs, there was also an increase in CPU usage during the creation of the CCNPs. The CPU usage was similar even though the policies were effectively selecting more pods. .. figure:: images/image\_9\_03.png As all pods running in a node are selected by \*\*all 250 CCNPs created\*\*, we... | https://github.com/cilium/cilium/blob/main//Documentation/operations/performance/scalability/report.rst | main | cilium | [
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.. only:: not (epub or latex or html) WARNING: You are looking at unreleased Cilium documentation. Please use the official rendered version released here: https://docs.cilium.io .. \_hubble\_internals: \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* Hubble internals \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* .. note:: This documentation sectio... | https://github.com/cilium/cilium/blob/main//Documentation/internals/hubble.rst | main | cilium | [
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length is a bit mask of ones + 1. The most significant bit of this bit mask is the same position of the most significant bit position of 'n'. In other terms, the internal buffer size is always a power of 2 with 1 slot reserved for the writer. In effect, from a user perspective, the ring buffer capacity is one less than... | https://github.com/cilium/cilium/blob/main//Documentation/internals/hubble.rst | main | cilium | [
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.. only:: not (epub or latex or html) WARNING: You are looking at unreleased Cilium documentation. Please use the official rendered version released here: https://docs.cilium.io .. \_cilium\_operator\_internals: Cilium Operator =============== This document provides a technical overview of the Cilium Operator and descr... | https://github.com/cilium/cilium/blob/main//Documentation/internals/cilium_operator.rst | main | cilium | [
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identities. This garbage collection is necessary because a 16-bit unsigned integer represents the security identity, and thus we can only have a maximum of 65536 identities in the cluster. CRD Identity garbage collection ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ CRD identity allocation uses Kubernetes custom resource ``CiliumIde... | https://github.com/cilium/cilium/blob/main//Documentation/internals/cilium_operator.rst | main | cilium | [
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.. only:: not (epub or latex or html) WARNING: You are looking at unreleased Cilium documentation. Please use the official rendered version released here: https://docs.cilium.io .. \_security\_identities: \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* Security Identities \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* Security identiti... | https://github.com/cilium/cilium/blob/main//Documentation/internals/security-identities.rst | main | cilium | [
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.. only:: not (epub or latex or html) WARNING: You are looking at unreleased Cilium documentation. Please use the official rendered version released here: https://docs.cilium.io .. \_k8s\_install\_quick: .. \_k8s\_quick\_install: .. \_k8s\_install\_standard: \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* Cilium Qui... | https://github.com/cilium/cilium/blob/main//Documentation/gettingstarted/k8s-install-default.rst | main | cilium | [
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as per minikube documentation: `Install Minikube `\_. The following command will bring up a single node minikube cluster prepared for installing cilium. .. code-block:: shell-session minikube start --cni=cilium .. note:: - This may not install the latest version of cilium. - It might be necessary to add ``--host-dns-re... | https://github.com/cilium/cilium/blob/main//Documentation/gettingstarted/k8s-install-default.rst | main | cilium | [
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issues you can delete ``aws-node`` DaemonSet prior to installing Cilium. .. group-tab:: OpenShift .. include:: ../installation/requirements-openshift.rst \*\*Install Cilium:\*\* Cilium is a `Certified OpenShift CNI Plugin `\_ and is best installed when an OpenShift cluster is created using the OpenShift installer. Plea... | https://github.com/cilium/cilium/blob/main//Documentation/gettingstarted/k8s-install-default.rst | main | cilium | [
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.. only:: not (epub or latex or html) WARNING: You are looking at unreleased Cilium documentation. Please use the official rendered version released here: https://docs.cilium.io .. \_starwars\_demo: ####################################### Getting Started with the Star Wars Demo ####################################### .... | https://github.com/cilium/cilium/blob/main//Documentation/gettingstarted/demo.rst | main | cilium | [
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51373 k8s:io.cilium.k8s.policy.cluster=default 10.0.0.47 ready k8s:io.cilium.k8s.policy.serviceaccount=coredns k8s:io.kubernetes.pod.namespace=kube-system k8s:k8s-app=kube-dns 2843 Enabled Disabled 16530 k8s:class=deathstar 10.0.0.89 ready k8s:io.cilium.k8s.policy.cluster=default k8s:io.cilium.k8s.policy.serviceaccount... | https://github.com/cilium/cilium/blob/main//Documentation/gettingstarted/demo.rst | main | cilium | [
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Generation: 2 Managed Fields: API Version: cilium.io/v2 Fields Type: FieldsV1 fieldsV1: f:description: f:metadata: f:annotations: .: f:kubectl.kubernetes.io/last-applied-configuration: f:spec: .: f:endpointSelector: .: f:matchLabels: .: f:class: f:org: f:ingress: Manager: kubectl Operation: Update Time: 2020-06-15T14:1... | https://github.com/cilium/cilium/blob/main//Documentation/gettingstarted/demo.rst | main | cilium | [
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.. only:: not (epub or latex or html) WARNING: You are looking at unreleased Cilium documentation. Please use the official rendered version released here: https://docs.cilium.io \*\*\*\*\*\*\*\*\*\*\* Terminology \*\*\*\*\*\*\*\*\*\*\* .. \_label: .. \_labels: Labels ====== Labels are a generic, flexible and highly sca... | https://github.com/cilium/cilium/blob/main//Documentation/gettingstarted/terminology.rst | main | cilium | [
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node to all bind to well known ports such as ``80`` without causing any conflicts. The default behavior of Cilium is to assign both an IPv6 and IPv4 address to every endpoint. However, this behavior can be configured to only allocate an IPv6 address with the ``--enable-ipv4=false`` option. If both an IPv6 and IPv4 addr... | https://github.com/cilium/cilium/blob/main//Documentation/gettingstarted/terminology.rst | main | cilium | [
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the timestamp when a container was launched. Cilium requires to know which labels are meaningful and are subject to being considered when deriving the identity. For this purpose, the user is required to specify a list of string prefixes of meaningful labels. The standard behavior is to include all labels which start wi... | https://github.com/cilium/cilium/blob/main//Documentation/gettingstarted/terminology.rst | main | cilium | [
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``k8s-app=kube-dns`` core-dns (EKS) kube-system coredns 106 ``k8s-app=kube-dns``, ``eks.amazonaws.com/component=coredns`` cilium-operator cilium-operator 105 ``name=cilium-operator``, ``io.cilium/app=operator`` ======================== =================== ==================== ================= =========== =============... | https://github.com/cilium/cilium/blob/main//Documentation/gettingstarted/terminology.rst | main | cilium | [
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.. only:: not (epub or latex or html) WARNING: You are looking at unreleased Cilium documentation. Please use the official rendered version released here: https://docs.cilium.io .. \_getting\_help: ############ Getting Help ############ Cilium is a project with a growing community. There are numerous ways to get help w... | https://github.com/cilium/cilium/blob/main//Documentation/gettingstarted/gettinghelp.rst | main | cilium | [
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.. only:: not (epub or latex or html) WARNING: You are looking at unreleased Cilium documentation. Please use the official rendered version released here: https://docs.cilium.io Roadmap ======= The Cilium project is community driven, thus the work that gets done and the project's future roadmap is determined by what wo... | https://github.com/cilium/cilium/blob/main//Documentation/community/roadmap.rst | main | cilium | [
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.. only:: not (epub or latex or html) WARNING: You are looking at unreleased Cilium documentation. Please use the official rendered version released here: https://docs.cilium.io .. \_community-meeting: Community Meetings ================== The Cilium contributors gather regularly for a Zoom call open to everyone. Durin... | https://github.com/cilium/cilium/blob/main//Documentation/community/community.rst | main | cilium | [
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about what they are, how to get involved, or which ones are currently active, please check out the `SIG.md in the community repo `\_ | https://github.com/cilium/cilium/blob/main//Documentation/community/community.rst | main | cilium | [
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.. only:: not (epub or latex or html) WARNING: You are looking at unreleased Cilium documentation. Please use the official rendered version released here: https://docs.cilium.io .. \_intro: ############################### Introduction to Cilium & Hubble ############################### What is Cilium? =============== Ci... | https://github.com/cilium/cilium/blob/main//Documentation/overview/intro.rst | main | cilium | [
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wherein a large application is split into small independent services that communicate with each other via APIs using lightweight protocols like HTTP. Microservices applications tend to be highly dynamic, with individual containers getting started or destroyed as the application scales out / in to adapt to load changes ... | https://github.com/cilium/cilium/blob/main//Documentation/overview/intro.rst | main | cilium | [
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.. only:: not (epub or latex or html) WARNING: You are looking at unreleased Cilium documentation. Please use the official rendered version released here: https://docs.cilium.io .. \_component\_overview: \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* Component Overview \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* .. image:: ../images/ci... | https://github.com/cilium/cilium/blob/main//Documentation/overview/component-overview.rst | main | cilium | [
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e.g. tcpdump and socket filters. It has since been extended with additional data structures such as hashtable and arrays as well as additional actions to support packet mangling, forwarding, encapsulation, etc. An in-kernel verifier ensures that eBPF programs are safe to run and a JIT compiler converts the bytecode to ... | https://github.com/cilium/cilium/blob/main//Documentation/overview/component-overview.rst | main | cilium | [
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You can install [Redis](https://redis.io/docs/about/) or [Redis Stack](/docs/about/about-stack) locally on your machine. Redis and Redis Stack are available on Linux, macOS, and Windows. Here are the installation instructions: \* [Install Redis](/docs/install/install-redis) \* [Install Redis Stack](/docs/install/instal... | https://github.com/redis/redis-doc/blob/master//docs/install/_index.md | master | redis | [
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This guide shows you how to install Redis on macOS using Homebrew. Homebrew is the easiest way to install Redis on macOS. If you'd prefer to build Redis from the source files on macOS, see [Installing Redis from Source](/docs/install/install-redis/install-redis-from-source). ## Prerequisites First, make sure you have H... | https://github.com/redis/redis-doc/blob/master//docs/install/install-redis/install-redis-on-mac-os.md | master | redis | [
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0... | 0.067779 |
Most major Linux distributions provide packages for Redis. ## Install on Ubuntu/Debian You can install recent stable versions of Redis from the official `packages.redis.io` APT repository. {{% alert title="Prerequisites" color="warning" %}} If you're running a very minimal distribution (such as a Docker container) you ... | https://github.com/redis/redis-doc/blob/master//docs/install/install-redis/install-redis-on-linux.md | master | redis | [
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Redis is not officially supported on Windows. However, you can install Redis on Windows for development by following the instructions below. To install Redis on Windows, you'll first need to enable [WSL2](https://docs.microsoft.com/en-us/windows/wsl/install) (Windows Subsystem for Linux). WSL2 lets you run Linux binari... | https://github.com/redis/redis-doc/blob/master//docs/install/install-redis/install-redis-on-windows.md | master | redis | [
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You can compile and install Redis from source on variety of platforms and operating systems including Linux and macOS. Redis has no dependencies other than a C compiler and `libc`. ## Downloading the source files The Redis source files are available from the [Download](/download) page. You can verify the integrity of t... | https://github.com/redis/redis-doc/blob/master//docs/install/install-redis/install-redis-from-source.md | master | redis | [
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This is a an installation guide. You'll learn how to install, run, and experiment with the Redis server process. While you can install Redis on any of the platforms listed below, you might also consider using Redis Cloud by creating a [free account](https://redis.com/try-free?utm\_source=redisio&utm\_medium=referral&ut... | https://github.com/redis/redis-doc/blob/master//docs/install/install-redis/_index.md | master | redis | [
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that the instance is not reachable. ## Use Redis from your application Of course using Redis just from the command line interface is not enough as the goal is to use it from your application. To do so, you need to download and install a Redis client library for your programming language. You'll find a [full list of cli... | https://github.com/redis/redis-doc/blob/master//docs/install/install-redis/_index.md | master | redis | [
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