54 lines
1.7 KiB
Plaintext
54 lines
1.7 KiB
Plaintext
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#!/bin/sh
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# CONTEXT: GUEST during CONSTRUCTION as ROOT
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# PURPOSE: Install controller base required packages
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set -ex
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export DEBIAN_FRONTEND=noninteractive
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cat > "/etc/sysctl.d/10-redis-performance.conf" << _EOF_
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# See 'http://redis.io/topics/admin' for best practices.
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# Make sure to set the Linux kernel overcommit memory setting to 1.
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vm.overcommit_memory=1
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# Linux kernel will silently truncate 'tcp-backlog' to the value of
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# '/proc/sys/net/core/somaxconn' so make sure to raise both the value of
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# 'somaxconn' and 'tcp_max_syn_backlog' in order to get the desired effect.
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net.ipv4.tcp_max_syn_backlog=1024
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net.core.somaxconn=1024
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_EOF_
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cat > "/etc/rc.local" << _EOF_
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# Make sure to disable Linux kernel feature transparent huge pages,
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# it will affect greatly both memory usage and latency in a negative way.
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if test -f /sys/kernel/mm/transparent_hugepage/defrag; then
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echo never > /sys/kernel/mm/transparent_hugepage/defrag
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fi
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if test -f /sys/kernel/mm/transparent_hugepage/enabled; then
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echo never > /sys/kernel/mm/transparent_hugepage/enabled
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fi
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_EOF_
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add-apt-repository -y ppa:chris-lea/redis-server
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apt-get -y update
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apt-get install -y redis-server
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cat > "/etc/default/redis-server" << _EOF_
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# Call ulimit -n with this argument prior to invoking Redis itself.
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# This may be required for high-concurrency environments. Redis itself cannot
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# alter its limits as it is not being run as root.
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ULIMIT=65536
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_EOF_
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# Install Python driver for Redis ('redis-py').
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pip install redis
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# By default, redis-py will attempt to use the HiredisParser if installed.
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# Using Hiredis can provide up to a 10x speed improvement in parsing responses
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# from the Redis server.
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pip install hiredis
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