118 lines
3.6 KiB
Bash
Executable File
118 lines
3.6 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# SHELLDOC-IGNORE
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# -------------------------------------------------------
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function showWelcome {
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cat <<Welcome-message
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_ _ _ ______
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| | | | | | | _ \\
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| |_| | __ _ __| | ___ ___ _ __ | | | |_____ __
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| _ |/ _\` |/ _\` |/ _ \\ / _ \\| '_ \\ | | | / _ \\ \\ / /
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| | | | (_| | (_| | (_) | (_) | |_) | | |/ / __/\\ V /
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\\_| |_/\\__,_|\\__,_|\\___/ \\___/| .__/ |___/ \\___| \\_(_)
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This is the standard Hadoop Developer build environment.
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This has all the right tools installed required to build
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Hadoop from source.
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Welcome-message
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}
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# -------------------------------------------------------
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function showAbort {
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cat <<Abort-message
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___ _ _ _
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/ _ \\| | | | (_)
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/ /_\\ \\ |__ ___ _ __| |_ _ _ __ __ _
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| _ | '_ \\ / _ \\| '__| __| | '_ \\ / _\` |
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| | | | |_) | (_) | | | |_| | | | | (_| |
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\\_| |_/_.__/ \\___/|_| \\__|_|_| |_|\\__, |
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__/ |
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|___/
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Abort-message
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}
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# -------------------------------------------------------
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function failIfUserIsRoot {
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if [ "$(id -u)" -eq "0" ]; # If you are root then something went wrong.
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then
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cat <<End-of-message
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Apparently you are inside this docker container as the user root.
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Putting it simply:
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This should not occur.
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Known possible causes of this are:
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1) Running this script as the root user ( Just don't )
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2) Running an old docker version ( upgrade to 1.4.1 or higher )
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End-of-message
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showAbort
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logout
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fi
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}
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# -------------------------------------------------------
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function warnIfLowMemory {
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MINIMAL_MEMORY=2046755
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INSTALLED_MEMORY=$(grep -F MemTotal /proc/meminfo | awk '{print $2}')
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if [[ $((INSTALLED_MEMORY)) -lt $((MINIMAL_MEMORY)) ]]; then
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cat <<End-of-message
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_ ___ ___
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| | | \\/ |
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| | _____ __ | . . | ___ _ __ ___ ___ _ __ _ _
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| | / _ \\ \\ /\\ / / | |\\/| |/ _ \\ '_ \` _ \\ / _ \\| '__| | | |
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| |___| (_) \\ V V / | | | | __/ | | | | | (_) | | | |_| |
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\\_____/\\___/ \\_/\\_/ \\_| |_/\\___|_| |_| |_|\\___/|_| \\__, |
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__/ |
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|___/
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Your system is running on very little memory.
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This means it may work but it wil most likely be slower than needed.
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If you are running this via boot2docker you can simply increase
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the available memory to at least ${MINIMAL_MEMORY}KiB
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(you have ${INSTALLED_MEMORY}KiB )
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End-of-message
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fi
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}
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# -------------------------------------------------------
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showWelcome
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warnIfLowMemory
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failIfUserIsRoot
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# -------------------------------------------------------
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