Redis 5.0.5 Installation / Update / Upgrade

Redis 5.0.5 Installation or Update on Ubuntu18 + Debian + CentOS with Plesk and WoltLab

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Redis easily installed and updated on the server

Redis easily installed and updated on the server

Part Ⅰ – Only necessary for the update

Shut down Redis and safely shut down data storage

Bash

root@server:~# redis-cli
127.0.0.1:6379> SHUTDOWN SAVE
(1.89s)
not connected> quit
root@server:~#

Stop Redis instance: ~# systemctl stop redis_6379 or ~# service redis_6379 stop
Backup of the current Redis configuration /etc/redis/6379.conf and data files /var/lib/redis/6379/appendonly.aof and /var/lib/redis/6379/dump.rdb

Part Ⅱ – Installation / Update

Debian + Ubuntu

Bash

~# apt-get install build-essential
~# apt-get install tcl wget

CentOS

Bash

~# yum groupinstall 'Development Tools'
~# yum install tcl wget

Debian + Ubuntu + CentOS

Bash

~# wget http://download.redis.io/redis-stable.tar.gz
~# tar xvzf redis-stable.tar.gz
~# cd redis-stable/
~/redis-stable# make distclean
~/redis-stable# make
~/redis-stable# make test
...\o/ All tests passed without errors!...
~/redis-stable# make install
~/redis-stable# cd
~# cd utils/
~/utils# ./install_server.sh
Selected config:
Port : 6379
Config file : /etc/redis/6379.conf
Log file : /var/log/redis_6379.log
Data dir : /var/lib/redis/6379
Executable : /usr/local/bin/redis-server
Cli Executable : /usr/local/bin/redis-cli
Is this ok? Then press ENTER to go on or Ctrl-C to abort.
Copied /tmp/6379.conf => /etc/init.d/redis_6379
Installing service...
Success!
Starting Redis server...
Installation successful!
root@server:~/redis-stable/utils# cd
~/utils# cd
~# systemctl start redis_6379
~# systemctl status redis_6379

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Open Redis configuration – Testing Redis with Ping Pong

Bash

~# redis-cli
127.0.0.1:6379> ping
PONG
127.0.0.1:6379>

Display Redis version

Bash

~# redis-server --version
Redis server v=5.0.5 sha=00000000:0 malloc=jemalloc-5.1.0 bits=64 build=346d28814696cac3
~#

Part Ⅲ – Configure server for Redis

Option A: Settings for overcommit_memory and somaxconn

Bash

~# echo never > /sys/kernel/mm/transparent_hugepage/enabled
~# echo "vm.overcommit_memory = 1" >>  /etc/sysctl.conf  && sysctl  -p
~# echo "net.core.somaxconn = 65535" >>  /etc/sysctl.conf  && sysctl  -p

Check:
~# cat /sys/kernel/mm/transparent_hugepage/enabled
always madvise [never]
~# cat /proc/sys/net/core/somaxconn
65535

Option B: Settings for transparent_hugepage, overcommit_memory and somaxconn

Bash

Install the sysfsutils package:
~# apt install sysfsutils
and enter the following 3 lines in the file /etc/sysfs.conf (after the text):

kernel/mm/transparent_hugepage/enabled = never
vm.overcommit_memory = 1
net.core.somaxconn = 65535

Check:
~# cat /sys/kernel/mm/transparent_hugepage/enabled
always madvise [never]

~# sysctl -a | grep hugepage
sysctl: reading key "net.ipv6.conf.all.stable_secret"
sysctl: reading key "net.ipv6.conf.default.stable_secret"
sysctl: reading key "net.ipv6.conf.eth0.stable_secret"
sysctl: reading key "net.ipv6.conf.eth1.stable_secret"
sysctl: reading key "net.ipv6.conf.lo.stable_secret"
vm.hugepages_treat_as_movable = 0
vm.nr_hugepages = 0
vm.nr_hugepages_mempolicy = 0
vm.nr_overcommit_hugepages = 0

~# cat /proc/sys/net/core/somaxconn
65535
(Default = 128)

~# sysctl -a | grep commit
sysctl: reading key "net.ipv6.conf.all.stable_secret"
sysctl: reading key "net.ipv6.conf.default.stable_secret"
sysctl: reading key "net.ipv6.conf.eth0.stable_secret"
sysctl: reading key "net.ipv6.conf.eth1.stable_secret"
sysctl: reading key "net.ipv6.conf.lo.stable_secret"
vm.nr_overcommit_hugepages = 0
vm.overcommit_kbytes = 0
vm.overcommit_memory = 1
vm.overcommit_ratio = 50

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All changed settings are displayed here in the Redis configuration file /etc/redis/6379.conf. The first two values are caused by the following configuration for system.d.

Bash

daemonize yes
supervised systemd
logfile /var/log/redis_6379.log
dir /var/lib/redis/6379
maxclients 10000
maxmemory 15GB (Server hat 32G Memory)
maxmemory-policy volatile-ttl
maxmemory-samples 5
appendonly yes

The Highlight – The great finale – Configure Redis for system.d

We create the file redis.service in /lib/systemd/system/redis.service with the following content:

Bash

[Unit]
Description=Redis In-Memory Data Store
After=network.target

[Service]
Type=forking
PIDFile=/var/run/redis_6379.pid

User=redis
Group=redis

RuntimeDirectory=redis
RuntimeDirectoryMode=0755

ExecStart=/usr/local/bin/redis-server /etc/redis/redis.conf
ExecStop=/usr/local/bin/redis-cli shutdown
Restart=always

[Install]
WantedBy=multi-user.target

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Thus, the two following values must also be adapted in the Redis configuration /etc/redis/6379.conf.

Bash

daemonize yes
pidfile /var/run/redis/redis.pid

Then definitely reload the daemon and restart Redis.

Code

~# systemctl daemon-reload
~# systemctl restart redis_6379

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Redis 5.0.5 Installation / Update / Upgrade

Redis easily installed and updated on the server

Part Ⅰ – Only necessary for the update

Part Ⅱ – Installation / Update

Debian + Ubuntu

CentOS

Debian + Ubuntu + CentOS

Open Redis configuration – Testing Redis with Ping Pong

Display Redis version

Part Ⅲ – Configure server for Redis

Option A: Settings for overcommit_memory and somaxconn

Option B: Settings for transparent_hugepage, overcommit_memory and somaxconn

The Highlight – The great finale – Configure Redis for system.d

About the Author

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