Ggraphicsmagick 中断 mongoDB。我不知道为什么
Ggraphicsmagick breaks mongoDB. I don't know why
美好的一天！我有一个服务器，在开始缩略图创建过程后，它会拍照，在后台创建缩略图并在 mongoDB 中记录文件名。
我有问题。当我上传 30 张图片时，mongo 服务器中断（停止）。当我上传2张图片的时候，没问题。
为什么会这样？请有人解释一下！
更新：问题只出现在专用服务器上。我在本地主机上没有问题。
更新：附加 mongoBD 日志
upload.js
const
fs = require('fs'),
{Router} = require("express"),
router = Router(),
multer = require('multer'),
colors = require('colors'),
path = require('path'),
cryptoRandomString = require('crypto-random-string');
const
thumbnail = require('./thumbnail.js'),
db_controllers = require('./db_controllers.js'),
_meta = require('./meta.js');
helpers = require("../helpers.js"),
defaults = require("../defaults.js");
let storage = multer.diskStorage({
destination: function(req, file, cb) {
let uploads_dir = "public/models/"+req.body.model_id+"/"+req.body.album_id;
fs.exists("./"+uploads_dir, function(err) {
fs.mkdir(uploads_dir, {recursive: true}, function(err) {
cb(null, uploads_dir);
return;
});
});
},
filename: function (req, file, cb){
let random_name = cryptoRandomString({length: 15});
cb( null, file.originalname.replace(/[а-я-()]/gi, "").split('.').slice(0, -1).join('.') +"_"+ random_name + path.extname(file.originalname) );
}
});
var upload = multer({ storage: storage });
router.post('/uploadmultiple', upload.array('myFiles', 200), async function (req, res, next) {
const files = req.files;
if (!files) {
const error = new Error('Please choose files')
error.httpStatusCode = 400
return next(error)
}
let data = {
content: [],
covers: [],
};
let meta = _meta.GenerateMetaData(req);
thumb_sizes = { w: defaults.app.thumb_size.w, /*h: defaults.app.thumb_size.h*/ undefined };
for (file of files) {
console.log("++ "+file.originalname);
if (file.mimetype == 'image/jpeg' || file.mimetype == 'image/png' || file.mimetype == 'image/webp') {
extname = path.extname(file.filename);
filename = file.filename.split('.').slice(0, -1).join('.');
thumbnail.genThumbs(file.destination, file.filename, thumb_sizes);
if ( helpers.findString( filename, ["cover"] ) ) {
data.covers.push({
image: filename+"_thumbnail"+extname,
alt: meta.alt[ helpers.SetRandom( meta.alt.length ) ],
});
}
data.content.push({
original: file.filename,
thumbnail: filename+"_thumbnail"+extname,
type: "photo",
alt: meta.alt[ helpers.SetRandom( meta.alt.length ) ],
});
}
}
console.log(data);
data.title = meta.title,
data.description = meta.description,
data.album_id = req.body.album_id;
data.name = req.body.album_name;
data.model_id = req.body.model_id;
data.model_name = req.body.model_name;
data.sise = req.body.sise;
data.seo_description = req.body.seo_description;
data.tags = req.body.tags.split(',');
data.date = new Date(Date.now() + parseInt(req.body.published_after));
data.category = req.body.category;
data.author = cryptoRandomString({length: 20, type: 'url-safe'});
db_controllers.CreateAlbum(data, function() {
res.send(files);
});
});
thumbnail.js
const gm = require('gm').subClass({imageMagick: true});
const path = require('path');
const colors = require('colors');
const ffmpeg = require('fluent-ffmpeg');
const command = ffmpeg();
function genThumbs(origin_path, f_name, thumb_size) {
f_ext = path.extname(f_name);
f_name = f_name.split('.').slice(0, -1).join('.');
gm(origin_path+"/"+f_name+f_ext)
.resize(thumb_size.w, thumb_size.h)
.noProfile()
.write(origin_path+"/"+f_name+"_thumbnail"+f_ext, function(err) {
if (!err) {
console.log('thumbnails is generated');
//return (origin_path+"/"+f_name+"_thumbnail"+f_ext);
}
else {
console.log(err);
return(undefined);
}
});
}
module.exports.genThumbs = genThumbs;
db_controllers.js
const
colors = require('colors'),
defaults = require("../defaults.js");
const MongoClient = require("mongodb").MongoClient;
const options = {
useNewUrlParser: true,
useUnifiedTopology: true,
// keepAlive: 1,
// connectTimeoutMS: 60000,
// socketTimeoutMS: 60000,
// auto_reconnect: true,
}
const mongoClient = new MongoClient(defaults.mongo.url, options);
db_name = defaults.mongo.db;
albums_coll = defaults.mongo.albums_coll;
function CreateAlbum (data, callback) {
console.log("/upload/db_conttrollers.js CreateAlbum() – is working");
// ERROR HAPPENS HERE
mongoClient.connect(function(err, dbClient) {
if(err) throw err;
console.log("----- posts.js: CreateAlbumRecord(): client is created -----");
let collection = dbClient.db(db_name).collection(albums_coll);
data.views = 0;
collection.insertOne(data, function(err, res) {
if (err) throw err;
console.log("-- posts.js: CreateAlbumRecord(): album_object is inserted --");
callback();
});
});
}
module.exports.CreateAlbum = CreateAlbum;
错误文本
MongoServerSelectionError: connect ECONNREFUSED 127.0.0.1:27017
at Timeout.<anonymous> (/root/node_modules/mongodb/lib/core/sdam/server_selection.js:307:9)
at listOnTimeout (internal/timers.js:549:17)
at processTimers (internal/timers.js:492:7) {
name: 'MongoServerSelectionError',
reason: TopologyDescription {
type: 'Single',
setName: null,
maxSetVersion: null,
maxElectionId: null,
servers: Map { 'localhost:27017' => [ServerDescription] },
stale: false,
compatible: true,
compatibilityError: null,
logicalSessionTimeoutMinutes: null,
heartbeatFrequencyMS: 10000,
localThresholdMS: 15,
commonWireVersion: null
},
[Symbol(mongoErrorContextSymbol)]: {}
}
MongoDB 日志
2020-04-09T03:01:33.204+0000 I CONTROL [main] ***** SERVER RESTARTED *****
2020-04-09T03:01:33.218+0000 I CONTROL [main] Automatically disabling TLS 1.0, to force-enable TLS 1.0 specify --sslDisabledProtocols 'none'
2020-04-09T03:01:33.311+0000 W ASIO [main] No TransportLayer configured during NetworkInterface startup
2020-04-09T03:01:33.313+0000 I CONTROL [initandlisten] MongoDB starting : pid=13500 port=27017 dbpath=/var/lib/mongodb 64-bit host=ubuntu-s-1vcpu-1gb-fra1-01
2020-04-09T03:01:33.313+0000 I CONTROL [initandlisten] db version v4.2.5
2020-04-09T03:01:33.313+0000 I CONTROL [initandlisten] git version: 2261279b51ea13df08ae708ff278f0679c59dc32
2020-04-09T03:01:33.313+0000 I CONTROL [initandlisten] OpenSSL version: OpenSSL 1.1.1 11 Sep 2018
2020-04-09T03:01:33.313+0000 I CONTROL [initandlisten] allocator: tcmalloc
2020-04-09T03:01:33.313+0000 I CONTROL [initandlisten] modules: none
2020-04-09T03:01:33.313+0000 I CONTROL [initandlisten] build environment:
2020-04-09T03:01:33.313+0000 I CONTROL [initandlisten] distmod: ubuntu1804
2020-04-09T03:01:33.313+0000 I CONTROL [initandlisten] distarch: x86_64
2020-04-09T03:01:33.313+0000 I CONTROL [initandlisten] target_arch: x86_64
2020-04-09T03:01:33.313+0000 I CONTROL [initandlisten] options: { config: "/etc/mongod.conf", net: { bindIp: "127.0.0.1", port: 27017 }, processManagement: { timeZoneInfo: "/usr/share/zoneinfo" }, storage: { dbPath: "/var/lib/mongodb", journal: { enabled: true } }, systemLog: { destination: "file", logAppend: true, path: "/var/log/mongodb/mongod.log" } }
2020-04-09T03:01:33.318+0000 W STORAGE [initandlisten] Detected unclean shutdown - /var/lib/mongodb/mongod.lock is not empty.
2020-04-09T03:01:33.318+0000 I STORAGE [initandlisten] Detected data files in /var/lib/mongodb created by the 'wiredTiger' storage engine, so setting the active storage engine to 'wiredTiger'.
2020-04-09T03:01:33.318+0000 W STORAGE [initandlisten] Recovering data from the last clean checkpoint.
2020-04-09T03:01:33.318+0000 I STORAGE [initandlisten]
2020-04-09T03:01:33.318+0000 I STORAGE [initandlisten] ** WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine
2020-04-09T03:01:33.318+0000 I STORAGE [initandlisten] ** See http://dochub.mongodb.org/core/prodnotes-filesystem
2020-04-09T03:01:33.318+0000 I STORAGE [initandlisten] wiredtiger_open config: create,cache_size=256M,cache_overflow=(file_max=0M),session_max=33000,eviction=(threads_min=4,threads_max=4),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=100000,close_scan_interval=10,close_handle_minimum=250),statistics_log=(wait=0),verbose=[recovery_progress,checkpoint_progress],
2020-04-09T03:01:33.908+0000 I STORAGE [initandlisten] WiredTiger message [1586401293:908591][13500:0x7fbed1005b00], txn-recover: Recovering log 19 through 20
2020-04-09T03:01:33.987+0000 I STORAGE [initandlisten] WiredTiger message [1586401293:987910][13500:0x7fbed1005b00], txn-recover: Recovering log 20 through 20
2020-04-09T03:01:34.063+0000 I STORAGE [initandlisten] WiredTiger message [1586401294:63623][13500:0x7fbed1005b00], txn-recover: Main recovery loop: starting at 19/10112 to 20/256
2020-04-09T03:01:34.064+0000 I STORAGE [initandlisten] WiredTiger message [1586401294:64932][13500:0x7fbed1005b00], txn-recover: Recovering log 19 through 20
2020-04-09T03:01:34.125+0000 I STORAGE [initandlisten] WiredTiger message [1586401294:125783][13500:0x7fbed1005b00], txn-recover: Recovering log 20 through 20
2020-04-09T03:01:34.176+0000 I STORAGE [initandlisten] WiredTiger message [1586401294:176256][13500:0x7fbed1005b00], txn-recover: Set global recovery timestamp: (0, 0)
2020-04-09T03:01:34.228+0000 I RECOVERY [initandlisten] WiredTiger recoveryTimestamp. Ts: Timestamp(0, 0)
2020-04-09T03:01:34.243+0000 I STORAGE [initandlisten] Timestamp monitor starting
2020-04-09T03:01:34.255+0000 I CONTROL [initandlisten]
2020-04-09T03:01:34.255+0000 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2020-04-09T03:01:34.255+0000 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2020-04-09T03:01:34.255+0000 I CONTROL [initandlisten]
2020-04-09T03:01:34.273+0000 I SHARDING [initandlisten] Marking collection local.system.replset as collection version: <unsharded>
2020-04-09T03:01:34.282+0000 I STORAGE [initandlisten] Flow Control is enabled on this deployment.
2020-04-09T03:01:34.284+0000 I SHARDING [initandlisten] Marking collection admin.system.roles as collection version: <unsharded>
2020-04-09T03:01:34.285+0000 I SHARDING [initandlisten] Marking collection admin.system.version as collection version: <unsharded>
2020-04-09T03:01:34.291+0000 I SHARDING [initandlisten] Marking collection local.startup_log as collection version: <unsharded>
2020-04-09T03:01:34.291+0000 I FTDC [initandlisten] Initializing full-time diagnostic data capture with directory '/var/lib/mongodb/diagnostic.data'
2020-04-09T03:01:34.295+0000 I SHARDING [LogicalSessionCacheRefresh] Marking collection config.system.sessions as collection version: <unsharded>
2020-04-09T03:01:34.296+0000 I SHARDING [LogicalSessionCacheReap] Marking collection config.transactions as collection version: <unsharded>
2020-04-09T03:01:34.296+0000 I NETWORK [listener] Listening on /tmp/mongodb-27017.sock
2020-04-09T03:01:34.296+0000 I NETWORK [listener] Listening on 127.0.0.1
2020-04-09T03:01:34.296+0000 I NETWORK [listener] waiting for connections on port 27017
2020-04-09T03:01:35.005+0000 I FTDC [ftdc] Unclean full-time diagnostic data capture shutdown detected, found interim file, some metrics may have been lost. OK
2020-04-09T03:01:35.013+0000 I SHARDING [ftdc] Marking collection local.oplog.rs as collection version: <unsharded>
App 运行s 在最简单的 DigitalOcean Droplet 上。它有 1 Gb RAM。 Graphicsmagick / ImageMagick 使用所有 RAM 并中断 mongo。为避免这种情况，我将延迟 运行 缩略图生成器。现在可以正常使用了。
function genThumbs(origin_path, f_name, thumb_size, delay) {
f_ext = path.extname(f_name);
f_name = f_name.split('.').slice(0, -1).join('.');
setTimeout(function() {
gm(origin_path+"/"+f_name+f_ext)
.resize(thumb_size.w, thumb_size.h)
.noProfile()
.write(origin_path+"/"+f_name+"_thumbnail"+f_ext, function(err) {
if (!err) {
console.log('thumbnails is generated');
//return (origin_path+"/"+f_name+"_thumbnail"+f_ext);
}
else {
console.log(err);
return(undefined);
}
});
}, delay);
}
美好的一天！我有一个服务器，在开始缩略图创建过程后，它会拍照，在后台创建缩略图并在 mongoDB 中记录文件名。
我有问题。当我上传 30 张图片时，mongo 服务器中断（停止）。当我上传2张图片的时候，没问题。
为什么会这样？请有人解释一下！
更新：问题只出现在专用服务器上。我在本地主机上没有问题。 更新：附加 mongoBD 日志
upload.js
const
fs = require('fs'),
{Router} = require("express"),
router = Router(),
multer = require('multer'),
colors = require('colors'),
path = require('path'),
cryptoRandomString = require('crypto-random-string');
const
thumbnail = require('./thumbnail.js'),
db_controllers = require('./db_controllers.js'),
_meta = require('./meta.js');
helpers = require("../helpers.js"),
defaults = require("../defaults.js");
let storage = multer.diskStorage({
destination: function(req, file, cb) {
let uploads_dir = "public/models/"+req.body.model_id+"/"+req.body.album_id;
fs.exists("./"+uploads_dir, function(err) {
fs.mkdir(uploads_dir, {recursive: true}, function(err) {
cb(null, uploads_dir);
return;
});
});
},
filename: function (req, file, cb){
let random_name = cryptoRandomString({length: 15});
cb( null, file.originalname.replace(/[а-я-()]/gi, "").split('.').slice(0, -1).join('.') +"_"+ random_name + path.extname(file.originalname) );
}
});
var upload = multer({ storage: storage });
router.post('/uploadmultiple', upload.array('myFiles', 200), async function (req, res, next) {
const files = req.files;
if (!files) {
const error = new Error('Please choose files')
error.httpStatusCode = 400
return next(error)
}
let data = {
content: [],
covers: [],
};
let meta = _meta.GenerateMetaData(req);
thumb_sizes = { w: defaults.app.thumb_size.w, /*h: defaults.app.thumb_size.h*/ undefined };
for (file of files) {
console.log("++ "+file.originalname);
if (file.mimetype == 'image/jpeg' || file.mimetype == 'image/png' || file.mimetype == 'image/webp') {
extname = path.extname(file.filename);
filename = file.filename.split('.').slice(0, -1).join('.');
thumbnail.genThumbs(file.destination, file.filename, thumb_sizes);
if ( helpers.findString( filename, ["cover"] ) ) {
data.covers.push({
image: filename+"_thumbnail"+extname,
alt: meta.alt[ helpers.SetRandom( meta.alt.length ) ],
});
}
data.content.push({
original: file.filename,
thumbnail: filename+"_thumbnail"+extname,
type: "photo",
alt: meta.alt[ helpers.SetRandom( meta.alt.length ) ],
});
}
}
console.log(data);
data.title = meta.title,
data.description = meta.description,
data.album_id = req.body.album_id;
data.name = req.body.album_name;
data.model_id = req.body.model_id;
data.model_name = req.body.model_name;
data.sise = req.body.sise;
data.seo_description = req.body.seo_description;
data.tags = req.body.tags.split(',');
data.date = new Date(Date.now() + parseInt(req.body.published_after));
data.category = req.body.category;
data.author = cryptoRandomString({length: 20, type: 'url-safe'});
db_controllers.CreateAlbum(data, function() {
res.send(files);
});
});
thumbnail.js
const gm = require('gm').subClass({imageMagick: true});
const path = require('path');
const colors = require('colors');
const ffmpeg = require('fluent-ffmpeg');
const command = ffmpeg();
function genThumbs(origin_path, f_name, thumb_size) {
f_ext = path.extname(f_name);
f_name = f_name.split('.').slice(0, -1).join('.');
gm(origin_path+"/"+f_name+f_ext)
.resize(thumb_size.w, thumb_size.h)
.noProfile()
.write(origin_path+"/"+f_name+"_thumbnail"+f_ext, function(err) {
if (!err) {
console.log('thumbnails is generated');
//return (origin_path+"/"+f_name+"_thumbnail"+f_ext);
}
else {
console.log(err);
return(undefined);
}
});
}
module.exports.genThumbs = genThumbs;
db_controllers.js
const
colors = require('colors'),
defaults = require("../defaults.js");
const MongoClient = require("mongodb").MongoClient;
const options = {
useNewUrlParser: true,
useUnifiedTopology: true,
// keepAlive: 1,
// connectTimeoutMS: 60000,
// socketTimeoutMS: 60000,
// auto_reconnect: true,
}
const mongoClient = new MongoClient(defaults.mongo.url, options);
db_name = defaults.mongo.db;
albums_coll = defaults.mongo.albums_coll;
function CreateAlbum (data, callback) {
console.log("/upload/db_conttrollers.js CreateAlbum() – is working");
// ERROR HAPPENS HERE
mongoClient.connect(function(err, dbClient) {
if(err) throw err;
console.log("----- posts.js: CreateAlbumRecord(): client is created -----");
let collection = dbClient.db(db_name).collection(albums_coll);
data.views = 0;
collection.insertOne(data, function(err, res) {
if (err) throw err;
console.log("-- posts.js: CreateAlbumRecord(): album_object is inserted --");
callback();
});
});
}
module.exports.CreateAlbum = CreateAlbum;
错误文本
MongoServerSelectionError: connect ECONNREFUSED 127.0.0.1:27017
at Timeout.<anonymous> (/root/node_modules/mongodb/lib/core/sdam/server_selection.js:307:9)
at listOnTimeout (internal/timers.js:549:17)
at processTimers (internal/timers.js:492:7) {
name: 'MongoServerSelectionError',
reason: TopologyDescription {
type: 'Single',
setName: null,
maxSetVersion: null,
maxElectionId: null,
servers: Map { 'localhost:27017' => [ServerDescription] },
stale: false,
compatible: true,
compatibilityError: null,
logicalSessionTimeoutMinutes: null,
heartbeatFrequencyMS: 10000,
localThresholdMS: 15,
commonWireVersion: null
},
[Symbol(mongoErrorContextSymbol)]: {}
}
MongoDB 日志
2020-04-09T03:01:33.204+0000 I CONTROL [main] ***** SERVER RESTARTED *****
2020-04-09T03:01:33.218+0000 I CONTROL [main] Automatically disabling TLS 1.0, to force-enable TLS 1.0 specify --sslDisabledProtocols 'none'
2020-04-09T03:01:33.311+0000 W ASIO [main] No TransportLayer configured during NetworkInterface startup
2020-04-09T03:01:33.313+0000 I CONTROL [initandlisten] MongoDB starting : pid=13500 port=27017 dbpath=/var/lib/mongodb 64-bit host=ubuntu-s-1vcpu-1gb-fra1-01
2020-04-09T03:01:33.313+0000 I CONTROL [initandlisten] db version v4.2.5
2020-04-09T03:01:33.313+0000 I CONTROL [initandlisten] git version: 2261279b51ea13df08ae708ff278f0679c59dc32
2020-04-09T03:01:33.313+0000 I CONTROL [initandlisten] OpenSSL version: OpenSSL 1.1.1 11 Sep 2018
2020-04-09T03:01:33.313+0000 I CONTROL [initandlisten] allocator: tcmalloc
2020-04-09T03:01:33.313+0000 I CONTROL [initandlisten] modules: none
2020-04-09T03:01:33.313+0000 I CONTROL [initandlisten] build environment:
2020-04-09T03:01:33.313+0000 I CONTROL [initandlisten] distmod: ubuntu1804
2020-04-09T03:01:33.313+0000 I CONTROL [initandlisten] distarch: x86_64
2020-04-09T03:01:33.313+0000 I CONTROL [initandlisten] target_arch: x86_64
2020-04-09T03:01:33.313+0000 I CONTROL [initandlisten] options: { config: "/etc/mongod.conf", net: { bindIp: "127.0.0.1", port: 27017 }, processManagement: { timeZoneInfo: "/usr/share/zoneinfo" }, storage: { dbPath: "/var/lib/mongodb", journal: { enabled: true } }, systemLog: { destination: "file", logAppend: true, path: "/var/log/mongodb/mongod.log" } }
2020-04-09T03:01:33.318+0000 W STORAGE [initandlisten] Detected unclean shutdown - /var/lib/mongodb/mongod.lock is not empty.
2020-04-09T03:01:33.318+0000 I STORAGE [initandlisten] Detected data files in /var/lib/mongodb created by the 'wiredTiger' storage engine, so setting the active storage engine to 'wiredTiger'.
2020-04-09T03:01:33.318+0000 W STORAGE [initandlisten] Recovering data from the last clean checkpoint.
2020-04-09T03:01:33.318+0000 I STORAGE [initandlisten]
2020-04-09T03:01:33.318+0000 I STORAGE [initandlisten] ** WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine
2020-04-09T03:01:33.318+0000 I STORAGE [initandlisten] ** See http://dochub.mongodb.org/core/prodnotes-filesystem
2020-04-09T03:01:33.318+0000 I STORAGE [initandlisten] wiredtiger_open config: create,cache_size=256M,cache_overflow=(file_max=0M),session_max=33000,eviction=(threads_min=4,threads_max=4),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=100000,close_scan_interval=10,close_handle_minimum=250),statistics_log=(wait=0),verbose=[recovery_progress,checkpoint_progress],
2020-04-09T03:01:33.908+0000 I STORAGE [initandlisten] WiredTiger message [1586401293:908591][13500:0x7fbed1005b00], txn-recover: Recovering log 19 through 20
2020-04-09T03:01:33.987+0000 I STORAGE [initandlisten] WiredTiger message [1586401293:987910][13500:0x7fbed1005b00], txn-recover: Recovering log 20 through 20
2020-04-09T03:01:34.063+0000 I STORAGE [initandlisten] WiredTiger message [1586401294:63623][13500:0x7fbed1005b00], txn-recover: Main recovery loop: starting at 19/10112 to 20/256
2020-04-09T03:01:34.064+0000 I STORAGE [initandlisten] WiredTiger message [1586401294:64932][13500:0x7fbed1005b00], txn-recover: Recovering log 19 through 20
2020-04-09T03:01:34.125+0000 I STORAGE [initandlisten] WiredTiger message [1586401294:125783][13500:0x7fbed1005b00], txn-recover: Recovering log 20 through 20
2020-04-09T03:01:34.176+0000 I STORAGE [initandlisten] WiredTiger message [1586401294:176256][13500:0x7fbed1005b00], txn-recover: Set global recovery timestamp: (0, 0)
2020-04-09T03:01:34.228+0000 I RECOVERY [initandlisten] WiredTiger recoveryTimestamp. Ts: Timestamp(0, 0)
2020-04-09T03:01:34.243+0000 I STORAGE [initandlisten] Timestamp monitor starting
2020-04-09T03:01:34.255+0000 I CONTROL [initandlisten]
2020-04-09T03:01:34.255+0000 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2020-04-09T03:01:34.255+0000 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2020-04-09T03:01:34.255+0000 I CONTROL [initandlisten]
2020-04-09T03:01:34.273+0000 I SHARDING [initandlisten] Marking collection local.system.replset as collection version: <unsharded>
2020-04-09T03:01:34.282+0000 I STORAGE [initandlisten] Flow Control is enabled on this deployment.
2020-04-09T03:01:34.284+0000 I SHARDING [initandlisten] Marking collection admin.system.roles as collection version: <unsharded>
2020-04-09T03:01:34.285+0000 I SHARDING [initandlisten] Marking collection admin.system.version as collection version: <unsharded>
2020-04-09T03:01:34.291+0000 I SHARDING [initandlisten] Marking collection local.startup_log as collection version: <unsharded>
2020-04-09T03:01:34.291+0000 I FTDC [initandlisten] Initializing full-time diagnostic data capture with directory '/var/lib/mongodb/diagnostic.data'
2020-04-09T03:01:34.295+0000 I SHARDING [LogicalSessionCacheRefresh] Marking collection config.system.sessions as collection version: <unsharded>
2020-04-09T03:01:34.296+0000 I SHARDING [LogicalSessionCacheReap] Marking collection config.transactions as collection version: <unsharded>
2020-04-09T03:01:34.296+0000 I NETWORK [listener] Listening on /tmp/mongodb-27017.sock
2020-04-09T03:01:34.296+0000 I NETWORK [listener] Listening on 127.0.0.1
2020-04-09T03:01:34.296+0000 I NETWORK [listener] waiting for connections on port 27017
2020-04-09T03:01:35.005+0000 I FTDC [ftdc] Unclean full-time diagnostic data capture shutdown detected, found interim file, some metrics may have been lost. OK
2020-04-09T03:01:35.013+0000 I SHARDING [ftdc] Marking collection local.oplog.rs as collection version: <unsharded>
App 运行s 在最简单的 DigitalOcean Droplet 上。它有 1 Gb RAM。 Graphicsmagick / ImageMagick 使用所有 RAM 并中断 mongo。为避免这种情况，我将延迟 运行 缩略图生成器。现在可以正常使用了。
function genThumbs(origin_path, f_name, thumb_size, delay) {
f_ext = path.extname(f_name);
f_name = f_name.split('.').slice(0, -1).join('.');
setTimeout(function() {
gm(origin_path+"/"+f_name+f_ext)
.resize(thumb_size.w, thumb_size.h)
.noProfile()
.write(origin_path+"/"+f_name+"_thumbnail"+f_ext, function(err) {
if (!err) {
console.log('thumbnails is generated');
//return (origin_path+"/"+f_name+"_thumbnail"+f_ext);
}
else {
console.log(err);
return(undefined);
}
});
}, delay);
}