Inside nginx amplify_ insights from our engineers – 【126kr】

This blog post is the fourth in a series about how to monitor NGINX and how to make the most out of your web delivery infrastructure with NGINX Amplify.

The public beta version of NGINX Amplify is now used on thousands of servers. Database high availability Many sysadmins and DevOps personnel have implemented it in their development, staging, and production environments. Database utility Feedback has been very positive, but we are receiving many requests for more examples of how to use it in the real world.

We asked ourselves: who knows NGINX and NGINX Amplify the best? Well, it’s definitely our own DevOps professionals. Data recovery zagreb So, we interviewed two of our experienced operations engineers, Andrei Belov and Jason Thigpen. Database javascript We asked them to describe how they configure NGINX and NGINX Plus for better monitoring and how they use NGINX Amplify.

Before NGINX, I worked at a medium-sized Internet service provider which also provided a wide set of hosting services, including a large shared‑hosting farm powered by Apache. Database administrator jobs I started as a tech support engineer and moved up to become a site reliability engineer [SRE], then a systems engineering manager. Data recovery for iphone Now, at NGINX, I work with some of the largest cloud providers: building their load‑balancing systems, doing release engineering for NGINX Plus, and helping with DevOps tasks for NGINX Amplify infrastructure such as EC2, RDS, and Route 53. Data recovery victoria bc Any interesting projects in your past?

[Open source] NGINX was launched in 2004, and we started to use it at my previous job around 2007. 10k database Before NGINX we were using the OOPS caching proxy server (unmaintained since the early 2000s) in front of Apache 1. Data recovery software mac x . Cost of data recovery from hard drive For the first step of NGINX adoption, we put NGINX as a reverse proxy in front of Apache, gradually replacing our OOPS accelerators with NGINX. S cerevisiae database Then, we started to serve static files with NGINX, in order to further speed up the delivery of hosted websites.

The third step, which I led, was porting mod_aclr to support Apache 2. Snl database x which we’d just started to use back then, and embedding it in our setup. Database 4500 Apache behind NGINX receives the request, and if the request is trying to get a static file, Apache stops request processing, returning the response header X‑Accel‑Redirect back to NGINX along with the file location. Data recovery miami fl NGINX then serves the file to the user. Data recovery sd card That tremendously offloaded our hosting machines’ resources and basically saved us at times of peak load. Uottawa database Another thing that helped us was the support for keepalive to the upstreams behind NGINX. Top 10 data recovery software free download How did you monitor servers in the past?

Years ago, we used our own set of scripts, custom built for the task. Database query optimization We were taking stats and metrics from the machines, switches, and routers in our own data center using SNMP, then feeding it into a central database with a simple but quite functional web frontend. Qmobile data recovery What qualities are necessary for a good monitoring system?

Three months after it became a company, five years ago. No 1 data recovery software You’ve been with NGINX Amplify project since its very beginning. Data recovery iphone free What is the history of its software stack?

That was an interesting development. Database 11g After a set of whiteboarding sessions, we implemented a prototype in an on‑premises virtualization system. Data recovery thumb drive Then we quickly moved everything to EC2. Data recovery hardware tools The requests are now resolving through Route 53, then going to an NGINX Plus load‑balancing layer. Os x data recovery We use NGINX Plus everywhere in the stack. R studio data recovery download I work most frequently with the backend receiver services and with the application deployments. Data recovery western digital NGINX does not require a lot of attention; it just works. Top 5 data recovery software It only needs to be monitored properly. Data recovery mac How was your monitoring implemented? What did you try to use, what worked and what did not?

At the very beginning of the project, monitoring was not implemented. Database website Once the infrastructure started to grow, several months before public beta, we added different monitoring systems. Data recovery denver NGINX Plus live activity monitoring was used together with them. Data recovery galaxy s4 All these tools provide views on NGINX Plus status, with longer retention time. R studio data recovery free full version How did you start using NGINX Amplify for monitoring?

When the NGINX Amplify Agent became available, we installed it immediately in the developer stack. Data recovery equipment We wanted to start using it ourselves as early as possible. Database primary key With the release of private beta, we started to use it in the production stack. Database link oracle Which graphs do you usually look at?

It depends on the situation. 7 data recovery key Most frequently, I look at requests per second, network traffic, connections per second, and NGINX upstream errors.

We recently had an interesting situation. Database manager salary We usually have the NGINX Amplify Agent running together with another monitoring system agent, which monitors the system metrics. Database processing Last month, one server started to appear offline in that monitoring system for no apparent reason. Database xcode The server was working, but the monitoring agent failed.

In order to understand why the agent was not working correctly, we created a custom dashboard in NGINX Amplify. Database administrator salary We collected every possible system metric, including IOWait , iostat , and network metrics, and started looking for abnormalities. Data recovery iphone 4s We found a correlation between metrics: every time the service appeared down, we had a burst in IOWait . Fundamentals of database systems That information helped us troubleshoot the cloud storage issues that were occurring.

Depends on the situation. Database er diagram Generic system tools: vmstat , iostat , ps , and top . Data recovery tools linux Network tools: netstat , ifstat , ss , and tcpdump . Data recovery wizard for mac What do you find especially useful in NGINX Amplify?

Definitely the custom dashboards and custom graphs. Database etl Sometimes I need to monitor something very specific. Database lock Let’s say there’s something wrong with the server, and I need to find out the cause of the issue. Data recovery reviews Now I can make my own dashboard with graphs on anything. Database d b This helps me in detecting anomalies and finding the root cause of the issues. Ads b database What are you going to research more in NGINX Amplify? How are you going to extend its use for your systems?

I definitely want to research filters further. Database denormalization I think they provide an exceptional level of detail and are likely to become critical for complex troubleshooting.

I would describe myself as an “infrastructure automation enthusiast.” Generally, my roles have focused on building out infrastructure and automating management of it — not necessarily “set up 12 servers,” but rather “ensure we can easily and automatically create and destroy infrastructure resources on demand.”

In the early 2000s, I was the Systems Engineer for a graduate program at a university where I inherited an infrastructure consisting of beige box PCs stacked on wooden shelves. Pokemon y database I quickly acquired an old server rack from another department and built out a stack of redundant rack‑mounted hardware. Data recovery icon I virtualized everything on Xen, focusing on wrappers around common administration tasks giving me the flexibility to build out internal web tools primarily in PHP, Python, and Ruby and Rails behind NGINX.

As AWS gained popularity, more people became interested in “the cloud,” AKA “someone else’s computer.” I gained a lot of experience consulting on many onsite-to-cloud migrations over the years. Fda 510 k database I then spent some time working for an employer with one of the largest datacenter footprints. Google hacking database Through that combination of experience, I have established a vocabulary for defining network resources that can apply to both datacenter and cloud resources. Database concepts 6th edition pdf Ideally, I wanted to make those resources more agnostic to the platform. Data recovery utility What makes working on NGINX Amplify project interesting?

I have always had an interest in building a business on top of open source software and the communities behind it. Data recovery from hard drive NGINX fits that vision perfectly. Database objects In the NGINX Amplify team, we are constantly dealing with the challenge of scaling a production infrastructure from scratch to meet the demands of our growing customer base. Data recovery raid 5 This also gives us an opportunity to demonstrate best practices for how to run a software as a service (SaaS) product. Database architect Can you describe the software stack of NGINX Amplify?

We run NGINX at every layer of our stack. Data recovery options That starts with our load‑balancing layer at the edge, routing traffic to frontend and backend services. Database jobs We also run NGINX in front of each application server as a local reverse proxy. H2 database file Frontends and backends are distributed across multiple availability zones for redundancy and high availability. R studio data recovery serial key Do you run NGINX Amplify Agent in the stack?

We have run NGINX Amplify Agent on all nodes from day one. Database query languages NGINX Amplify complements NGINX to the point that I see no reason not to run it next to every instance. P d database You get a central location for visibility into what’s going on with your NGINX deployments and how that correlates to other system metrics. Database 101 Can you describe your day‑to‑day monitoring activities? What are you looking at?

Thankfully, I joined after Andrei and others had put together some really great overview dashboards. M power database Among other things, one of our “go to” dashboards covers requests per second, the amount of traffic sent and received, and counts of response status codes at every layer of our stack. Data recovery from external hard drive Using filters, we can get even more granular insight into exactly which response status codes we’re returning. Database join types Any interest in system‑level metrics: CPU, RAM, disk I/O?

I think system metrics are interesting as correlations to other NGINX metrics. Section 8 database We get them with the NGINX Amplify Agent, and it helps us paint the whole picture of what might be happening at any given time. Icd 9 database Do you predict trends with NGINX Amplify?

Today, this largely depends on existing known trends. Database xampp Since NGINX Amplify is a new product, we often have limited long‑term data. Database administrator jobs However, based on historical experience, we look at time periods that we consider “good” or “bad” and set thresholds for new NGINX Amplify alerts. Data recovery joondalup That feedback helps inform decisions for new graphs and filters that we can use in more meaningful ways. Database of genomic variants What special systems do you use for alerting?

We use NGINX Amplify alerts to send emails as we reach warning level thresholds. Database viewer We send similar critical level alerts to our on‑call escalation service, PagerDuty. H data recovery registration code free download How critical is a server failure?

A well‑architected infrastructure should handle a single host failure seamlessly, and ours is no exception. Database hardware Our NGINX Plus load‑balancing tier is key to handling a dynamic infrastructure. Database roles For instance, if we see a backend host behaving badly, we can quickly and easily prevent it from accepting production traffic and replace it with a new healthy instance using the upstream_conf interface . B tree database management system How do you do that?

We primarily use SaltStack for infrastructure orchestration. Database file At the simplest level, you can target your upstream load balancers with the Salt execution module http.query with the appropriate query to your upstream_conf endpoint. Data recovery near me Ideally, you utilize the Salt Reactor system to act on events triggered by beacons. Database job description Did you have events where you had a server failure and had to use your monitoring tools? What did you do then?

One memorable issue was surfaced through the monitoring of our message queueing and background jobs clusters. Data recovery 94fbr The NGINX Amplify Agent gave us the system‑level metrics that we further used for alerting. Database foreign key What we don’t want to see is alerting from customer emails. Database as a service We expect our infrastructure to alert us before our customers notice anything. Iphone 6 data recovery What do you usually look at in case of performance degradation?

We start with the overview dashboards that we have configured in NGINX Amplify, looking for quick and obvious visual correlations. Database google drive This will usually highlight a host or a service spike in some metric, whether it is requests per second, CPU usage, or errors. Data recovery geek squad Then we take that service or host out of its respective load‑balancing pool for forensics and manual maintenance. Database recovery pending As described above, we can also spin up a replacement machine while we continue tracing the issue with the failed server. Data recovery prices Which NGINX Amplify metrics and dashboards have been particularly helpful to you?

I remember we began seeing an increase in the nginx.http.status.5xx metric for one of our services. Database sharding We needed to narrow those down to understand which errors they were; we return a few different application level response status codes for different reasons. Database keys with example For that, using filters to split those into multiple metrics allowed us to create graphs comparing more specific application errors. Data recovery xfs This showed us that the increase in application errors was related to failed database connections. Database management systems 3rd edition Using this new insight we discovered an issue with our database hosting provider that we were able to troubleshoot and resolve with them. Database engineer salary What tools do you run in order to troubleshoot issues?

Tracing tools, tcpdump /Wireshark. Jstor database Many parts of the system tools output are presented in the dashboards already, so we only need to narrow things down to a particular service on the server and troubleshoot it. E m database The logs of the service usually help a lot. Data recovery richmond va Then we may take traffic captures with tcpdump , or even debug the application itself. Data recovery software Sometimes the problem is system‑level, and iostat together with other tools can be helpful. Data recovery advisor Which features of NGINX Amplify are you planning to research more and implement later?

I find filters really interesting. Database host name I really like the idea of applying filters to some metrics, and I want to understand them better. Database performance It is a very powerful tool that we plan to use extensively.