# 源代码编译安装redis





## 一、系统环境

* OS： Openeuler 24.03 LTS
* Redis版本：7.2.12
* 架构：哨兵模式
* 目录规划：
  * /data/redis/DATA
  * /data/redis/LOGS





## 二、系统配置

### 2.1 前置配置



1、系统内核

```
echo 65535 > /proc/sys/net/core/somaxconn
echo 1 > /proc/sys/vm/overcommit_memory

sysctl -w net.core.somaxconn=65535
sysctl -w vm.overcommit_memory=1
echo "net.core.somaxconn = 65535" | tee -a /etc/sysctl.conf
echo "vm.overcommit_memory = 1" | tee -a /etc/sysctl.conf
```



2、安装系统依赖包

```
yum -y install yum install make gcc gcc-c++
```



3、创建用户

```
id redis || useradd -u 6379 redis -s /sbin/nologin -M
```



4、创建数据目录

```
install -d /data/redis/DATA /data/redis/LOGS -o redis -g redis
```



### 2.2 Redis 编译安装



1、下载

```
export version=7.2.12
wget http://download.redis.io/releases/redis-${version}.tar.gz
tar axvf redis-${version}.tar.gz
cd redis-${version}
```



2、编译安装

```
make distclean
make BUILD_TLS=no -j $(nproc --all)
make PREFIX=/usr/local/redis-${version} install
cd /usr/local/ && ln -svf redis-${version} redis
```





默认使用jemalloc分配器，所以先安装jemalloc内存管理器

```
cd deps/jemalloc
./configure && make -j 8 && make install
```





3、完成后使用以下检测版本

```
./redis-server --version                                                               
Redis server v=7.2.12 sha=00000000:0 malloc=jemalloc-5.3.0 bits=64 build=67aa91aee02876f6
```





4、创建系统环境变量

```
cat >/etc/profile.d/redis.sh<<EOF
export PATH=\$PATH:/usr/local/redis/bin
EOF
```



5、创建配置文件

```
cat >/etc/redis.conf <<EOF
### GENERAL CONFIGURATION
bind 0.0.0.0
port 6379
daemonize no
supervised no
protected-mode no
dir "/data/redis/DATA"
dbfilename dump.rdb
pidfile /var/run/redis_6379.pid
loglevel notice
logfile "/data/redis/LOGS/redis.log"
databases 16
always-show-logo yes
maxmemory 0
maxmemory-policy volatile-lru
appenddirname "appenddir"
appendfilename "appendonly.aof"

### Snapshot settings
save 900 1
save 300 10
save 60 10000

### SAFE CONFIGURE
# 禁止使用FLUSHALL
rename-command FLUSHALL ""

# 至少需要1台健康的从节点，主节点才能写入
min-replicas-to-write 1
# 延迟小于5秒slave才判定为健康slave
min-replicas-max-lag 5

### REPLICATION
replica-serve-stale-data yes
replica-read-only yes

#replicaof 172.20.5.11 6379
#slave-announce-port 6379
#slave-announce-ip 10.96.200.25
EOF
```





6、创建systemd文件

```
cat >/usr/lib/systemd/system/redis.service<<EOF
[Unit]
Description=redis-server
After=network.target

[Service]
Type=simple
User=redis
Group=redis
ExecStart=/usr/local/redis/bin/redis-server /etc/redis.conf \
                                            --daemonize no \
                                            --supervised systemd
ExecStop=/usr/local/redis/bin/redis-cli shutdown
LimitNOFILE=65535
NoNewPrivileges=yes
#OOMScoreAdjust=-900
#PrivateTmp=yes
TimeoutStartSec=infinity
TimeoutStopSec=infinity
UMask=0077
WorkingDirectory=/data/redis


[Install]
WantedBy=multi-user.target
EOF
```







## 三、Sentinel架构配置



### 3.1 创建配置文件



1、写入sentinel配置文件

```
cat >/etc/redis-sentinel.conf<<EOF
protected-mode no       
supervised systemd
port 26379
daemonize no
maxclients 10000
pidfile "/var/run/redis-sentinel.pid"
loglevel notice
logfile "/data/redis/LOGS/sentinel.log"
dir "/tmp"

sentinel monitor mymaster 110.10.2.41 6379 2
sentinel auth-pass mymaster vqiu@8848

sentinel down-after-milliseconds mymaster 10000
sentinel failover-timeout mymaster 15000
EOF
```





2、创建systemd文件

```
cat >/usr/lib/systemd/system/redis-sentinel.service<<EOF
[Unit]
Description=Redis Sentinel
After=network.target
After=network-online.target
Wants=network-online.target

[Service]
Type=simple
User=root
Group=root
ExecStart=/usr/local/redis/bin/redis-sentinel /etc/redis-sentinel.conf --supervised systemd
ExecStop=/usr/local/redis/bin/redis-cli -p 26379 redis-sentinel
LimitNOFILE=10240

[Install]
WantedBy=multi-user.target
EOF
```





### 3.2 启动服务



```
systemctl restart redis-sentinel
```



### 3.3 测试

```
# redis-cli -p 26379 sentinel master mymaster
# redis-cli -p 26379 sentinel slaves mymaster
# redis-cli -p 26379 sentinel sentinels mymaster
# redis-cli -p 26379 sentinel get-master-addr-by-name mymaster
```







## 参考引用

* 【1】 https://vqiu.cn/redis-sentinel-deployment/