k3s/docs/man/kube-scheduler.1.md

2.4 KiB

% KUBERNETES(1) kubernetes User Manuals % Scott Collier % October 2014

NAME

kube-scheduler - Schedules containers on hosts.

SYNOPSIS

kube-scheduler [OPTIONS]

DESCRIPTION

The kubernetes scheduler is a policy-rich, topology-aware, workload-specific function that significantly impacts availability, performance, and capacity. The scheduler needs to take into account individual and collective resource requirements, quality of service requirements, hardware/software/policy constraints, affinity and anti-affinity specifications, data locality, inter-workload interference, deadlines, and so on. Workload-specific requirements will be exposed through the API as necessary.

The kube-scheduler can take several options.

OPTIONS

-address="127.0.0.1" The address to serve from.

**-alsologtostderr=**false log to standard error as well as files.

-api_version="" The API version to use when talking to the server.

-insecure_skip_tls_verify=false If true, the server's certificate will not be checked for validity. This will make your HTTPS connections insecure.

-log_backtrace_at=:0 when logging hits line file:N, emit a stack trace.

-log_dir="" If non-empty, write log files in this directory.

-log_flush_frequency=5s Maximum number of seconds between log flushes.

-logtostderr=false log to standard error instead of files.

-master="" The address of the Kubernetes API server.

**-port=**10251 The port that the scheduler's http service runs on.

-stderrthreshold=0 logs at or above this threshold go to stderr.

-v=0 log level for V logs.

-version=false Print version information and quit.

-vmodule= comma-separated list of pattern=N settings for file-filtered logging.

EXAMPLES

The kube-scheduler can be called manually or from systemd. An example unit file looks as such:

[Unit]
Description=Kubernetes Scheduler

[Service]
EnvironmentFile=/etc/kubernetes/config
EnvironmentFile=/etc/kubernetes/apiserver
EnvironmentFile=/etc/kubernetes/scheduler
ExecStart=/usr/bin/kube-scheduler \
    --logtostderr=${KUBE_LOGTOSTDERR} \
    --v=${KUBE_LOG_LEVEL} \
    --master=${KUBE_MASTER}
Restart=on-failure

[Install]
WantedBy=multi-user.target

Where the variables are stored in the /etc/kubernetes/ environment files.

HISTORY

October 2014, Originally compiled by Scott Collier (scollier@redhat.com) based on the kubernetes source material and internal work.