GeezerVison is showing github.com — fullstackpython.github.com/logging.html at gh-pages · xidianwlc/fullstackpython.github.com

Expand file tree

logging.html

Copy path

More file actions

Latest commit

History

283 lines (278 loc) · 14.3 KB

logging.html

Copy path

File metadata and controls

283 lines (278 loc) · 14.3 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

<!DOCTYPE html>

<title>Logging - Full Stack Python</title>

<!--[if lt IE 9]>

<![endif]-->

<style>

html,

body {

font-size: 18px;

color: #222;

background: #fefefe;

}

body {

padding-top: 10px;

}

.footer {

padding: 20px 0 30px 0;

}

a, a:hover {border-bottom: 1px dotted; color: #444;}

a:hover {text-decoration: none; color: #000;}

.logo-title a, .logo-title a:hover {font-size: 72px; font-weight: normal;

letter-spacing: .04em;

vertical-align: middle;

margin-left: 5px;

color: #000; text-decoration: none;

border-bottom: none;

font-family: "Helvetica Neue",

sans-serif;

line-height: .9em;}

.logo-title a:hover {color: gray;}

.logo-image {vertical-align: middle; border: none;}

.logo-header-section {margin: 15px 0 15px 0;}

a.list-group-item.active {background: #444; border: 1px solid #222;}

a.list-group-item.active:hover {background: #444; border: 1px solid #222;}

#sidebar {margin-top: 30px;}

.select-next {

min-height: 300px;

}

.choose-btn {

font-size: 1.1em;

margin: 10px 0 0 0;

}

.choose-next {

border: 1px solid black;

background-color: #444;

margin-left: 25px;

color: #ddd;

}

.choose-next a {

color: #eee;

}

.btn-full {width: 100%; box-shadow: 1px 2px 1px #222;}

p.under-btn {text-align: left; margin-top: 20px;}

h3.panel-head {margin: 5px 0 0 0; font-size: 26px; color: #fff;}

.smaller-item {font-size: .8em; padding: 5px 0 5px 10px;}

@media (max-width: 1200px) {

h3.panel-head {font-size: 22px;}

}

@media (max-width: 992px) {

.choose-next {

margin-left: 0px;

}

.select-next {

min-height: 100px;

}

.smaller-item {font-size: 1em; padding: 15px 0 15px 10px;}

}

@media (max-width: 600px) {

.logo-header-section {

margin: 20px 32px 0 0;

}

</style>

var _gaq = _gaq || [];

_gaq.push(['_setAccount', 'UA-19910497-7']);

_gaq.push(['_trackPageview']);

(function() {

var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;

ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';

var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);

})();

</script>

</head>

<body>

</a>

<span class="logo-title"><a href="/">Full Stack Python</a></span>

</div>

<h1>Logging</h1>

<p>Logging is a mechanism for monitoring web applications written with a

web framework. Runtime exceptions that prevent code from running are

important to log to investigate and fix the source of the problems.

Informational and debugging logging also helps to understand how the

application is performing even if code is working as intended.</p>

<p>Logging is often grouped into several categories:</p>

<ol>

<li>Information</li>

<li>Debug</li>

<li>Warning</li>

<li>Error</li>

</ol>

<p>Logging errors that occur while a web framework is running is crucial to

understanding how your application is performing.

<a href="http://raven.readthedocs.org/en/latest/">Raven</a> is a Python client for the

<a href="https://github.com/getsentry/sentry">Sentry</a> exception logging and

aggregation application. Raven provides the way to send exceptions to

Sentry, which should be deployed on a separate server from your production

infrastructure. Raven can also be used by Python scripts to send other

log data to Sentry for aggregation. Sentry provides a clean web application

interface for viewing the exceptions. Sentry can also be configured with a

mail plugin to send emails when exceptions occur.</p>

<h2>Logging Aggregators</h2>

<p>When you are running your application on several servers, it is helpful

to have a monitoring tool called a "logging aggregator". You can configure your

application to forward your system and application logs to one location that

provides tools for viewing, searching, and monitoring logging events across your cluster. </p>

<p>Another advantage of log aggregatortion tools is they allow you to set up custom alerts

and alarms so you can get notified when error rates breach a certain threshold.</p>

<h3>Log Aggregator Third Party Services</h3>

<ul>

<li><a href="https://www.loggly.com/">loggly</a> Loggly is a third party cloud based application that

aggregates logs. They have instructions for every major language, including python. It includes email

alerting on custom searches. </li>

<li><a href="https://papertrailapp.com/">papertrail</a> Paper trail is similar to both loggly and splunk and provides

integration with S3 for </li>

<li><a href="http://www.splunk.com/">splunk</a> Splunk offers third party cloud and self hosted solutions

for event aggregation. It excells at searching and data mining any text based data. </li>

</ul>

<h3>Open Source Log Aggregators</h3>

<ul>

<li><a href="http://graylog2.org/">Graylog2</a> Provides a central server for log aggregation as well as a GUI for

browsing and searching through log events. There are libraries for most major languages, including python.

Saves data in elasicache.</li>

<li><a href="http://logstash.net/">Logstash</a> Similar to Graylog2, logstash offers features to programatically

configure log data workflows.</li>

<li><a href="https://github.com/facebook/scribe">Scribe</a> A project written by Facebook to aggregate logs. It's designed

to run on multiple servers and scale with the rest of your cluster. Uses the Thrift messagaing format so it can

be used with any language. </li>

</ul>

<h2>Logging resources</h2>

<ul>

<li>

<p>This <a href="http://www.blog.pythonlibrary.org/2012/08/02/python-101-an-intro-to-logging/">intro to logging</a>

presents the Python logging module and how to use it.</p>

</li>

<li>

<p><a href="http://www.hybridcluster.com/blog/logging-storytelling/">Logging as Storytelling</a>

is a multi-part series working the analogy that logs should read like

a story so you can better understand what's taking place in your web

application.

<a href="http://www.hybridcluster.com/blog/logging-storytelling-lets-add-action/">Part 2 describes actions</a>

and

<a href="http://www.hybridcluster.com/blog/logging-storytelling-3-types/">part 3 talks about types</a>.</p>

</li>

</ul>

<h3>Logging isn't enough. How do I analyze more data about the app?</h3>

How do I monitor my app besides just the log files?

</p>

</div>

</a>

I want to learn more about the users of my application.

</p>

</div>

Something in the logs looks strange. How do I learn about

security?

</p>

</div>

How do I automate the server configuration I've set up?

</p>

</div>

</div> </div>

<div class="panel-heading"><h3 class="panel-head">Logging</h3></div>

<a href="/">Full Stack Python</a> is an open source book explaining

each layer of the Python web application stack along with the

best Python resources from around the web.

<hr/>

<a href="http://twitter.com/mattmakai">Matt Makai</a> designed and

wrote this site with assistance from community pull

requests. If you're on GitHub you can

<a href="https://github.com/makaimc">follow him</a>

to see what daily changes are made or

<a href="https://github.com/makaimc/fullstackpython.github.com">star the repository</a> for future reference.

</div>

<h3 class="panel-head">Table of Contents</h3>

</div>

<a href="/introduction.html" class="list-group-item smaller-item ">Introduction</a>

<a href="/bottle.html" class="list-group-item smaller-item ">Bottle</a>

<a href="/deployment.html" class="list-group-item smaller-item ">Deployment</a>

<a href="/other-web-frameworks.html" class="list-group-item smaller-item ">Other Web Frameworks</a>

<a href="/servers.html" class="list-group-item smaller-item ">Servers</a>

<a href="/web-frameworks.html" class="list-group-item smaller-item ">Web Frameworks</a>

<a href="/django.html" class="list-group-item smaller-item ">Django</a>

<a href="/operating-systems.html" class="list-group-item smaller-item ">Operating Systems</a>

<a href="/flask.html" class="list-group-item smaller-item ">Flask</a>

<a href="/web-servers.html" class="list-group-item smaller-item ">Web Servers</a>

<a href="/platform-as-a-service.html" class="list-group-item smaller-item ">Platform-as-a-service</a>

<a href="/databases.html" class="list-group-item smaller-item ">Databases</a>

<a href="/wsgi-servers.html" class="list-group-item smaller-item ">WSGI Servers</a>

<a href="/application-dependencies.html" class="list-group-item smaller-item ">Application Dependencies</a>

<a href="/cascading-style-sheets.html" class="list-group-item smaller-item ">Cascading Style Sheets</a>

<a href="/javascript.html" class="list-group-item smaller-item ">JavaScript</a>

<a href="/static-content.html" class="list-group-item smaller-item ">Static Content</a>

<a href="/source-control.html" class="list-group-item smaller-item ">Source Control</a>

<a href="/caching.html" class="list-group-item smaller-item ">Caching</a>

<a href="/task-queues.html" class="list-group-item smaller-item ">Task Queues</a>

<a href="/api-integration.html" class="list-group-item smaller-item ">API Integration</a>

<a href="/no-sql-datastore.html" class="list-group-item smaller-item ">NoSQL Data Stores</a>

<a href="/web-application-security.html" class="list-group-item smaller-item ">Web Security</a>

<a href="/logging.html" class="list-group-item smaller-item active">Logging</a>

<a href="/monitoring.html" class="list-group-item smaller-item ">Monitoring</a>

<a href="/configuration-management.html" class="list-group-item smaller-item ">Configuration Management</a>

<a href="/web-analytics.html" class="list-group-item smaller-item ">Web Analytics</a>

<a href="/best-python-resources.html" class="list-group-item smaller-item ">Best Python Resources</a>

<a href="/about-author.html" class="list-group-item smaller-item ">About the Author</a>

<a href="/change-log.html" class="list-group-item smaller-item ">Change Log</a>

<a href="/future-directions.html" class="list-group-item smaller-item ">Future Directions</a>

</div>

</div></div>

<hr/>

<a href="http://www.mattmakai.com/" class="underline">Matt Makai</a>

2014

</div>

</body>

</html>