Parse-Server 安装中的 MongoError write EPIPE”
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【中文标题】Parse-Server 安装中的 MongoError write EPIPE”【英文标题】:MongoError write EPIPE” in Parse-Server Installation 【发布时间】:2016-04-25 23:12:12 【问题描述】:我正在帮助一位朋友将 Parse 应用程序迁移到专用服务器而不是托管服务提供商,但我在尝试解决我认为服务器上的 Parse Server 实例中发生的错误时遇到了困难。
首先,这是来自 PM2 日志的错误堆栈,每次向服务器发送 GET 或 POST 时都会抛出该堆栈:
parse-wrapper-0 (err): at null.<anonymous> (/usr/lib/node_modules /parse-server/node_modules/mongodb-core/lib/connection/pool.js:119:12)
parse-wrapper-0 (err): at g (events.js:273:16)
parse-wrapper-0 (err): at emitTwo (events.js:100:13)
parse-wrapper-0 (err): at emit (events.js:185:7)
parse-wrapper-0 (err): at Socket.<anonymous> (/usr/lib/node_modules/parse-server/node_modules/mongodb-core/lib/connection/connection.js:144:49)
parse-wrapper-0 (err): at Socket.g (events.js:273:16)
parse-wrapper-0 (err): at emitOne (events.js:90:13)
parse-wrapper-0 (err): error: Uncaught internal server error. [MongoError: server localhost:27017 received an error "name":"MongoError","message":"write EPIPE"]
parse-wrapper-0 (err): name: 'MongoError',
parse-wrapper-0 (err): message: 'server localhost:27017 received an error "name":"MongoError","message":"write EPIPE"' MongoError: server localhost:27017 received an error "name":"MongoError","message":"write EPIPE"
parse-wrapper-0 (err): at null.<anonymous> (/usr/lib/node_modules/parse-server/node_modules/mongodb-core/lib/topologies/server.js:308:40)
parse-wrapper-0 (err): at emitTwo (events.js:100:13)
parse-wrapper-0 (err): at emit (events.js:185:7)
parse-wrapper-0 (err): at null.<anonymous> (/usr/lib/node_modules/parse-server/node_modules/mongodb-core/lib/connection/pool.js:119:12)
parse-wrapper-0 (err): at g (events.js:273:16)
parse-wrapper-0 (err): at emitTwo (events.js:100:13)
parse-wrapper-0 (err): at emit (events.js:185:7)
parse-wrapper-0 (err): at Socket.<anonymous> (/usr/lib/node_modules/parse-server/node_modules/mongodb-core/lib/connection/connection.js:144:49)
parse-wrapper-0 (err): at Socket.g (events.js:273:16)
parse-wrapper-0 (err): at emitOne (events.js:90:13)
由于我不太确定问题的性质(我查看了 write EPIPE 错误是什么,但不确定为什么它会在 GET 上发生或为什么每次都会关闭),我只是给出我能想到的与此相关的服务器的所有信息。
这是目前的相对用户结构:
root -defuser:运行 mongo 实例以及 nginx -parse:通过 PM2 运行解析
这是 PM2 正在使用的生态系统.json 文件:
"apps":[
"name" : "parse-wrapper",
"script" : "/usr/bin/parse-server",
"watch" : true,
"merge_logs" : true,
"cwd" : "/home/parse",
"env" :
"PARSE_SERVER_CLOUD_CODE_MAIN": "cloud/main.js",
"PARSE_SERVER_DATABASEURI": "mongodb://parse:SUPERPASSWORDHERE@domain.here:27017/beerdb?ssl=true",
"PARSE_SERVER_APPLICATION_ID": "super secret Parse key",
"PARSE_SERVER_MASTER_KEY" : " master key"
]
这是 mongo.conf 文件:
# mongod.conf
# for documentation of all options, see:
# http://docs.mongodb.org/manual/reference/configuration-options/
# Where and how to store data.
storage:
dbPath: /var/lib/mongodb
journal:
enabled: true
# engine:
# mmapv1:
# wiredTiger:
# where to write logging data.
systemLog:
destination: file
logAppend: true
path: /var/log/mongodb/mongod.log
# network interfaces
net:
port: 27017
bindIp: 0.0.0.0
ssl:
mode: requireSSL
PEMKeyFile: /etc/ssl/mongo.pem
#processManagement:
security:
authorization: enabled
#operationProfiling:
#replication:
#sharding:
setParameter:
failIndexKeyTooLong: false
## Enterprise-Only Options:
#auditLog:
#snmp:
我不认为 nginx 与此有任何关系,但这里的配置无论如何:
# HTTP - redirect all requests to HTTPS
server
listen 80;
listen [::]:80 default_server ipv6only=on;
return 301 https://$host$request_uri;
# HTTPS - serve html from /usr/share/nginx/html, proxy requests to /parse/
# through to Parse Server
server
listen 443;
server_name domain.here;
root /usr/share/nginx/html;
index index.html index.htm;
ssl on;
# Use certificate and key provided by Let's Encrypt:
ssl_certificate /etc/letsencrypt/live/domain.here/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/domain.here/privkey.pem;
ssl_session_timeout 5m;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_prefer_server_ciphers on;
ssl_ciphers 'EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH';
# Pass requests for /parse/ to Parse Server instance at localhost:1337
location /
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-NginX-Proxy true;
proxy_pass http://localhost:1337/parse/;
proxy_ssl_session_reuse off;
proxy_set_header Host $http_host;
proxy_redirect off;
我在这里基本上没有想法,虽然我不是一个专家,不仅仅是设置 Apache,所以这可能是一个愚蠢的疏忽或我的头脑。因此,如果有任何帮助,我们将不胜感激,如果是简单的,我们深表歉意。
【问题讨论】:
【参考方案1】:我的部署遇到了同样的问题。事实证明 Parse Dashboard 与 MongoDB 建立了很多连接(在我的情况下 > 1k 连接),因此我们必须增加 mongo.conf
中的最大连接限制和文件描述符限制(取决于您的操作系统)。
例如,在 Linux 中:
编辑mongo.conf
文件并添加maxConns = 10000
编辑/etc/sysctl.conf
文件并添加fs.file-max = 10000
正在运行ulimit -n 50000
【讨论】:
fs.file-max = 1000000 in sysctl.conf 为我解决了一个问题,即 GridFS 在尝试使用 ~500MB 文件时导致上述错误。以上是关于Parse-Server 安装中的 MongoError write EPIPE”的主要内容,如果未能解决你的问题,请参考以下文章
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