Redis easily installed and updated on the server
Part Ⅰ – Only necessary for the update
- Shut down Redis and safely shut down data storage
- 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
CentOS
Debian + Ubuntu + CentOS
Shell-Script
- ~# 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
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
Shell-Script
- ~# 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
Shell-Script
- 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
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.
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:
Shell-Script
- [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
Thus, the two following values must also be adapted in the Redis configuration /etc/redis/6379.conf.
Then definitely reload the daemon and restart Redis.
- WoltLab Suite
- WoltLab Suite 3.1
- WoltLab
- Update
- Upgrade
- Ubuntu
- Ubuntu 16.04
- Ubuntu 18.04
- Plesk Onyx
- Plesk Onyx 17.8.11
- Plesk
- Redis
- Redis 5.0.5
- Installation
- Plesk Obsidian
- WoltLab Suite 5.2
- Version (Software)
- Configuration (Computer)
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