Nginx启动报错Cannot allocate memory
农凯戈 人气:0
**本文转载自: https://www.93bok.com**
### 前言
今天改了nginx的一个配置参数,所以就reload了一下,我去,竟然报错了Cannot allocate memory起不来,日志报错如下:
***
- 报错如下图
![Pr3ihn.png](https://s1.ax1x.com/2018/08/06/Pr3ihn.png)
```bash
[alert] 21470#0: mmap(MAP_ANON|MAP_SHARED, 536870912) failed (12: Cannot allocate memory)
```
### 解决
##### 1. 查看一下内存还剩多少
```bash
free -m
```
***
```bash
total used free shared buff/cache available
Mem: 992 427 77 81 487 314
Swap: 0 0 0
```
***
##### 2. 修改配置文件
```bash
vim /etc/nginx/nginx.conf
```
***
```bash
fastcgi_cache_path https://img.qb5200.com/download-x/data/www/wordpress/fastcgi/ngx_fcgi_cache levels=2:2 keys_zone=ngx_fcgi_cache:500m inactive=30s max_size=5g;
```
***
>* 把上边的500m改成free内存的数量即可,但是也不要一点不剩,这里我改成了50m
##### 3. 修改完配置文件之后测试一下配置文件是否通过检测
```bash
nginx -t
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful
```
##### 4. 重启nginx成功
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