minio/buildscripts/docker-entrypoint.sh
Nitish Tiwari d4b107adf4 Retry name lookup for kubernetes and docker swarm environment (#4800)
Wait for remote hosts to resolve instead of failing on first host
resolution error, when running in Kubernetes or Docker environment.

Note that

- Waiting is based on exponential back-off mechanism
- If run as a binary, server fails if remote host is not resolvable

This is needed because in orchestration platforms like Kubernetes, remote
hosts are started sequentially and all the hosts are not up initially,
though they are expected to come up in a short time frame
It is difficult to identify a cap on the waiting time due to
non-deterministic nature of infrastructure platforms, so the server waits
infinitely for the hosts to come up, while logging the error messages to
the console.

Fixes: https://github.com/minio/minio/issues/4669
2017-08-13 13:34:10 -07:00

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#!/bin/sh
#
# Minio Cloud Storage, (C) 2017 Minio, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# If command starts with an option, prepend minio.
if [ "${1}" != "minio" ]; then
if [ -n "${1}" ]; then
set -- minio "$@"
fi
fi
## Look for docker secrets in default documented location.
docker_secrets_env() {
local MINIO_ACCESS_KEY_FILE="/run/secrets/access_key"
local MINIO_SECRET_KEY_FILE="/run/secrets/secret_key"
if [ -f $MINIO_ACCESS_KEY_FILE -a -f $MINIO_SECRET_KEY_FILE ]; then
if [ -f $MINIO_ACCESS_KEY_FILE ]; then
export MINIO_ACCESS_KEY="$(cat "$MINIO_ACCESS_KEY_FILE")"
fi
if [ -f $MINIO_SECRET_KEY_FILE ]; then
export MINIO_SECRET_KEY="$(cat "$MINIO_SECRET_KEY_FILE")"
fi
fi
}
## Set access env from secrets if necessary.
docker_secrets_env
exec "$@"