Redis 6.x/7.x Install on Centos7.9（单机多实例）

原创 OnTheRoad 2022-09-26

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1. Redis 6.x/7.x Install on Centos7.9 单机多实例

1.1. 主机设置

1.1.1. 创建 Redis 用户

## 创建用户、用户组
groupadd redis && useradd -g redis redis
## 设置用户密码
echo "redis123" |passwd --stdin  redis

## 配置用户环境变量
su - redis
echo "export PATH=\$PATH:/usr/local/redis/bin" >> ~/.bash_profile

1.1.2. 安装依赖

yum install -y gcc-c++ autoconf automaker

1.1.3. 主机优化

设置内存 OOM 策略

cat >> /etc/sysctl.conf << EOF
net.core.somaxconn = 32768
vm.overcommit_memory = 1
EOF

sysctl -p

设置 Redis 可利用的 open files

该数值可限制 Redis 最大客户端连接数。maxclients = open files - 32

cat >> /etc/security/limits.conf << EOF
# For Redis
redis   soft    nproc   2047
redis   hard    nproc   16384
redis   soft    nofile  65535
redis   hard    nofile  65535
EOF

禁用 THP

## 查看 THP
cat /sys/kernel/mm/transparent_hugepage/enabled 
[always] madvise never

## 禁用 THP
echo "echo never > /sys/kernel/mm/transparent_hugepage/enabled" >> /etc/rc.local

重启系统，使设置生效。针对 RedHat 需将 /sys/kernel/mm/transparent_hugepage/enabled 修改为 /sys/kernel/mm/redhat_transparent_hugepage/enable。

cat /sys/kernel/mm/transparent_hugepage/enabled 
always madvise [never]

1.2. 多实例安装 Redis

1.2.1. 编译安装

官方链接： https://download.redis.io/redis-stable.tar.gz

华为云镜像：https://repo.huaweicloud.com/redis/

## 1. 下载源码包
export VERSION=6.2.5
export VERSION=7.0.4

wget https://repo.huaweicloud.com/redis/redis-${VERSION}.tar.gz

## 2. 解压
tar -zxvf redis-${VERSION}.tar.gz

## 3. 编译
cd redis-${VERSION}/

## 4. 编译 redis
make

## 5. 安装
## 将 Redis 安装到指定目录(默认安装位置 /usr/local/bin/redis-server）
make PREFIX=/usr/local/redis-${VERSION} install

1.2.2. 创建软连接

创建软连接，便于后续版本升级。

export VERSION=7.0.4

ln -s /usr/local/redis-${VERSION} /usr/local/redis

chown -R redis:redis /usr/local/redis*
chmod -R 755 /usr/local/redis*

[redis@localhost ~]# tree -L 2 /usr/local/redis-$VERSION
/usr/local/redis-7.0.4
└── bin
    ├── redis-benchmark
    ├── redis-check-aof -> redis-server
    ├── redis-check-rdb -> redis-server
    ├── redis-cli
    ├── redis-sentinel -> redis-server
    └── redis-server

1 directory, 6 files

[root@localhost ~]# ll /usr/local/|grep redis
lrwxrwxrwx. 1 redis redis   22 Sep 26 15:16 redis -> /usr/local/redis-7.0.4
drwxr-xr-x. 3 redis redis 4096 Sep 26 11:52 redis-7.0.4

1.2.3. 多实例配置

1.2.3.1. 目录设置

export VERSION=7.0.4
export RDATA=/redis-data

for REDIS_PORT in 6381 6382 6383
  do
    echo ">>> ${REDIS_PORT}"
    mkdir -p $RDATA/${REDIS_PORT}
    cp ~/redis-${VERSION}/redis.conf $RDATA/${REDIS_PORT}/redis_${REDIS_PORT}.conf
    chown -R redis:redis $RDATA/${REDIS_PORT}
    chmod -R 755 $RDATA/${REDIS_PORT}
    chmod -R 644 $RDATA/${REDIS_PORT}/redis_${REDIS_PORT}.conf    
  done

[root@localhost ~]# tree -L 2 $RDATA
/redis-data/
├── 6381
│   └── redis_6381.conf
├── 6382
│   └── redis_6382.conf
└── 6383
    └── redis_6383.conf

1.2.3.2. 准备配置文件

export RDATA=/redis-data

for REDIS_PORT in 6381 6382 6383
  do
    echo ">>> start  for ${REDIS_PORT}"
    sed -i 's|^bind|#bind|g' $RDATA/${REDIS_PORT}/redis_${REDIS_PORT}.conf
    sed -i 's|^daemonize.*$|daemonize yes|g' $RDATA/${REDIS_PORT}/redis_${REDIS_PORT}.conf
    sed -i 's|^#.requirepass.*$|requirepass redis123|g' $RDATA/${REDIS_PORT}/redis_${REDIS_PORT}.conf
    sed -i "s|^dir.*$|dir $RDATA/${REDIS_PORT}/|g" $RDATA/${REDIS_PORT}/redis_${REDIS_PORT}.conf
    sed -i "s|^port.*$|port ${REDIS_PORT}|g" $RDATA/${REDIS_PORT}/redis_${REDIS_PORT}.conf
    sed -i "s|^pidfile.*$|pidfile /var/run/redis_${REDIS_PORT}.pid|g" $RDATA/${REDIS_PORT}/redis_${REDIS_PORT}.conf
    sed -i "s|^logfile.*$|logfile $RDATA/${REDIS_PORT}/redis_${REDIS_PORT}.log|g" $RDATA/${REDIS_PORT}/redis_${REDIS_PORT}.conf
    echo ">> config for ${REDIS_PORT}"
    cat $RDATA/${REDIS_PORT}/redis_${REDIS_PORT}.conf |grep -E '^#bind|^daemonize.*$|^requirepass.*$|^dir.*$|^logfile.*$|^port.*$'
    echo ">>> end for ${REDIS_PORT}"
    sleep 10
  done

预期输出内容如下

>>> start  for 6381
>>  config for 6381
#bind 127.0.0.1 -::1
port 6381
daemonize yes
pidfile /var/run/redis_6381.pid
logfile /redis-data/6381/redis_6381.log
dir /redis-data/6381/
requirepass redis123
>>> end for 6381

配置文件内容如下（可根据实际需要，进一步修改配置内容）：

export RDATA=/redis-data

[root@localhost ~]# grep -Ev '^\s*#|^$' $RDATA/6381/redis_6381.conf
protected-mode yes
port 6381
tcp-backlog 511
timeout 0
tcp-keepalive 300
daemonize yes
pidfile /var/run/redis_6381.pid
loglevel notice
logfile /redis-data/6381/redis_6381.log
databases 16
always-show-logo no
set-proc-title yes
proc-title-template "{title} {listen-addr} {server-mode}"
stop-writes-on-bgsave-error yes
rdbcompression yes
rdbchecksum yes
dbfilename dump.rdb
rdb-del-sync-files no
dir /redis-data/6381/
replica-serve-stale-data yes
replica-read-only yes
repl-diskless-sync yes
repl-diskless-sync-delay 5
repl-diskless-sync-max-replicas 0
repl-diskless-load disabled
repl-disable-tcp-nodelay no
replica-priority 100
acllog-max-len 128
requirepass redis123
lazyfree-lazy-eviction no
lazyfree-lazy-expire no
lazyfree-lazy-server-del no
replica-lazy-flush no
lazyfree-lazy-user-del no
lazyfree-lazy-user-flush no
oom-score-adj no
oom-score-adj-values 0 200 800
disable-thp yes
appendonly no
appendfilename "appendonly.aof"
appenddirname "appendonlydir"
appendfsync everysec
no-appendfsync-on-rewrite no
auto-aof-rewrite-percentage 100
auto-aof-rewrite-min-size 64mb
aof-load-truncated yes
aof-use-rdb-preamble yes
aof-timestamp-enabled no
 
slowlog-log-slower-than 10000
slowlog-max-len 128
latency-monitor-threshold 0
notify-keyspace-events ""
hash-max-listpack-entries 512
hash-max-listpack-value 64
list-max-listpack-size -2
list-compress-depth 0
set-max-intset-entries 512
zset-max-listpack-entries 128
zset-max-listpack-value 64
hll-sparse-max-bytes 3000
stream-node-max-bytes 4096
stream-node-max-entries 100
activerehashing yes
client-output-buffer-limit normal 0 0 0
client-output-buffer-limit replica 256mb 64mb 60
client-output-buffer-limit pubsub 32mb 8mb 60
hz 10
dynamic-hz yes
aof-rewrite-incremental-fsync yes
rdb-save-incremental-fsync yes
jemalloc-bg-thread yes

1.2.3.3. 配置开机启停

创建 service 配置文件

for REDIS_PORT in 6381 6382 6383
  do
    echo ">>> start for ${REDIS_PORT}"
    echo "[Unit]" >> /etc/systemd/system/redis-${REDIS_PORT}.service
    echo "Description=The redis-server Process Manager for ${REDIS_PORT}" >> /etc/systemd/system/redis-${REDIS_PORT}.service
    echo "After=syslog.target network.target" >> /etc/systemd/system/redis-${REDIS_PORT}.service
    echo "[Service]" >> /etc/systemd/system/redis-${REDIS_PORT}.service
    echo "Type=forking" >> /etc/systemd/system/redis-${REDIS_PORT}.service
    echo "User=redis" >> /etc/systemd/system/redis-${REDIS_PORT}.service
    echo "LimitNOFILE=65536" >> /etc/systemd/system/redis-${REDIS_PORT}.service
    echo "WorkingDirectory=/redis-data/${REDIS_PORT}" >> /etc/systemd/system/redis-${REDIS_PORT}.service
    echo "ExecStart=/usr/local/redis/bin/redis-server /redis-data/${REDIS_PORT}/redis_${REDIS_PORT}.conf" >> /etc/systemd/system/redis-${REDIS_PORT}.service
    echo "ExecStop=/usr/local/redis/bin/redis-cli -p ${REDIS_PORT} shutdown" >> /etc/systemd/system/redis-${REDIS_PORT}.service
    echo "[Install]" >> /etc/systemd/system/redis-${REDIS_PORT}.service
    echo "WantedBy=multi-user.target" >> /etc/systemd/system/redis-${REDIS_PORT}.service
    cat /etc/systemd/system/redis-${REDIS_PORT}.service
    sleep 10
  done

预期的输出

>>> start for 6381
[Unit]
Description=The redis-server Process Manager for 6381
After=syslog.target network.target
[Service]
Type=forking
User=redis
LimitNOFILE=65536
WorkingDirectory=/redis-data/6381
ExecStart=/usr/local/redis/bin/redis-server /redis-data/6381/redis_6381.conf
ExecStop=/usr/local/redis/bin/redis-cli -p 6381 shutdown
[Install]
WantedBy=multi-user.target

加载 service 文件

systemctl daemon-reload

开机自启

## 批量启用开机自启
for REDIS_PORT in 6381 6382 6383
  do
    echo ">>> enable redis-${REDIS_PORT}"
    systemctl enable redis-${REDIS_PORT}
  done

## 批量启动 redis 服务进程
for REDIS_PORT in 6381 6382 6383
  do
    echo ">>> start redis-${REDIS_PORT}"
    systemctl start redis-${REDIS_PORT}
  done

## 批量停止 redis 服务进程
for REDIS_PORT in 6381 6382 6383
  do
    echo ">>> stop redis-${REDIS_PORT}"
    systemctl stop redis-${REDIS_PORT}
  done

## 批量重启 redis 服务进程
for REDIS_PORT in 6381 6382 6383
  do
    echo ">>> restart redis-${REDIS_PORT}"
    systemctl restart redis-${REDIS_PORT}
  done

## 批量查看 redis 进程状态
for REDIS_PORT in 6381 6382 6383
  do
    echo ">>> status redis-${REDIS_PORT}"
    systemctl status redis-${REDIS_PORT}
  done

## 批量禁用 redis 开机自启
for REDIS_PORT in 6381 6382 6383
  do
    echo ">>> disable redis-${REDIS_PORT}"
    systemctl disable redis-${REDIS_PORT}
  done

验证启动结果

[root@localhost ~]# ps -ef|grep redis
redis    16650     1  0 15:34 ?        00:00:00 /usr/local/redis/bin/redis-server *:6381
redis    16662     1  0 15:34 ?        00:00:00 /usr/local/redis/bin/redis-server *:6382
redis    16674     1  0 15:34 ?        00:00:00 /usr/local/redis/bin/redis-server *:6383
root     16698 13584  0 15:34 pts/1    00:00:00 grep --color=auto redis

1.2.3.4. 手动启停 Redis

## 1. # 手动启动
su - redis
export REDIS_PORT=6381
cd /usr/local/redis/bin
./redis-server /redis-data/${REDIS_PORT}/redis_${REDIS_PORT}.conf

## 2. 查看 redis 进程
[redis@localhost bin]$ ps -ef|grep redis
root     17014 13584  0 15:38 pts/1    00:00:00 su - redis
redis    17015 17014  0 15:38 pts/1    00:00:00 -bash
redis    17077     1  0 15:39 ?        00:00:00 ./redis-server *:6381
redis    17090 17015  0 15:39 pts/1    00:00:00 ps -ef
redis    17091 17015  0 15:39 pts/1    00:00:00 grep --color=auto redis
[redis@localhost bin]$ 

## 3. 连接 redis，密码为 redis123
/usr/local/redis/bin/redis-cli -c -h 127.0.0.1 -p ${REDIS_PORT} -a "redis123"

## 4. 结束 redis 进程
/usr/local/redis/bin/redis-cli -c -h 127.0.0.1 -p ${REDIS_PORT} -a "redis123" shutdown

redis

最后修改时间：2022-09-26 19:44:27

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