Welcome!

Containers Expo Blog Authors: Jamie Madison, Dalibor Siroky, PagerDuty Blog, Stackify Blog, Matt Lonstine

Related Topics: @DevOpsSummit, Linux Containers, Containers Expo Blog

@DevOpsSummit: Blog Post

Docker + Solr How-to: Monitoring the Official Solr Docker Image By @seti321 | @DevOpsSummit #DevOps

A rapidly growing number of organizations are using Solr and Docker in production

Docker + Solr How-to: Monitoring the Official Solr Docker Image
By Stefan Thies

The official Solr Image on Docker Hub was released just a few weeks ago and already has 16K pulls. Why not more? Well, there are more than 200 different Solr images on Docker Hub — probably because no official Image was available!

A rapidly growing number of organizations are using Solr and Docker in production and they are probably happy about the new official Image. Needless to say, monitoring Solr is essential in production. Docker is disruptive in many ways, and there are many things that are slightly different and worth mentioning.  These include:

  1. Changed deployment for Solr and its monitoring tools using Dockerfile, Docker Compose or various Orchestration Tools
  2. There is a new Layer to monitor: Container Metrics and Events, see: Docker Events and Metrics monitoring and SPM for Docker
  3. Logging has changed: containers log to the console and logs need to be retrieved from Docker-Daemon instead getting them from the Solr log file.  Check out our post on the subject: Innovative Docker Log Management
  4. Official Images may not provide options for monitoring (such as JMX).  However, the official Image for Solr provides an option to pass parameters to the Java Runtime Environment.  We we will use this option for Solr monitoring in this post.

Next, I’m going to demonstrate the setup of a Solr node with SPM. The final setup will provide the full Solr & Docker Monitoring and Logging package:

  • Detailed Application Metrics for Solr, deployed on Docker
  • Detailed Container Metrics and Docker Events
  • Centralized Logs for all Containers by SPM for Docker

Let’s first decide on one of the following options to monitor Solr on Docker:

  1. Build your own Solr container with a mix of open-source monitoring/alerting tools. I’m not going to go into detail about this option today because dealing with a mix of open-source DevOps tools and a non-official Solr image doesn’t sound clean; plus, we can do better.
  2. Use a standalone monitoring agent, which queries metrics from the Solr container. This requires a setup for JMX and Docker networking configurations for the monitor and Solr. The metrics gathered by remote agents are limited and, in the Docker context, running an external monitoring process plus Solr processes consumes more resources.  And the next option …
  3. Inject an SPM in-process monitoring agent into Solr. This option has the lowest resource usage and has support for advanced monitoring functions like Transaction Tracing and AppMap.

We’ll go with Option #3 in this blog post, as it provides the best insights into Solr.  Sematext provides the SPM Client (this includes the monitoring agent and metrics sender) pre-installed in a Docker Image.  We refer to this dockerized SPM Client as “SPM Client Image/Container” in the following instructions.  The main trick here is to mount a volume from SPM Client Container into Solr Containers in order to load the monitoring library that’s part of the SPM Client Container.

Let’s have a look at the desired setup and how to get there:

Solr_image_infographic

We’ll use the latest Docker-Compose Version (> v1.5) because we can than use environment variables substitution in Docker-Compose.

1) Configure and start SPM-Client Container

The SPM Token is a unique identifier for monitored applications – if you haven’t created an SPM App for Solr, then create one here first. Should take about 37 seconds.

# Set the SPM Token as Environment Variable
export SPM_TOKEN=4feb144c-4da8-4081-83b5-b0b8e06e743a
# Set the JVM Name, which appears in SPM JVM Metrics Report
# In addition we will use it as Hostname for the Solr container
export JVM_NAME=SOLR1

2) Create SPM Client and Solr service in docker-compose.yml Note: you may copy this file to make changes for additional Solr options; all parameters are set as Environment Variables.

spm-client-solr:
image: sematext/spm-client
container_name: spm-client-solr
hostname: spm-client-solr
environment:
- SPM_CONFIG=${SPM_TOKEN} solr javaagent ${JVM_NAME}

SOLR1:
image: solr
hostname: solr1
ports:
- "8983:8983"
volumes_from:
- spm-client-solr
environment:
- SOLR_OPTS=-Dcom.sun.management.jmxremote -javaagent:
/opt/spm/spm-monitor/lib/
spm-monitor-solr.jar=${SPM_TOKEN}::${JVM_NAME}
command: bin/solr -f

In the Environment variable “SOLR_OPTS” in the Docker-Compose file above we see options for the SPM in-process monitor to inject a .jar file from the SPM Client Volume.  The SOLR_OPTS string is taken from SPM install instructions.  It includes the SPM Token (the ${SPM_TOKEN} part) and provides the JVM name so we can distinguish between multiple Solr instances if we run N of them on the same host (the ::${JVM_NAME} part).

3) Run Solr and SPM Monitor

We are now ready to fire up Solr:

docker-compose up -d

Solr_image_code

All done! After about a minute, metrics for the Docker Host, JVMs and Solr nodes will appear in SPM.  Because we chose a consistent naming for Container hostname, and JVM name we can immediately see, in every chart, the relevant filters named “SOLR1”.  This is much better than some random Container IDs.

Solr_image_screen_4

Solr Metrics Overview

But what about my Solr Logs and the Container Metrics?
Simply run SPM for Docker – it collect logs as well as container and host metrics.  It can also parse Solr logs and store them in Logsene (see Logsene 1-Click ELK Stack), which is awesome because it means you can have both Solr/OS/JVM metrics AND Solr logs all in one place!  Or do you maybe like to ssh to your servers and grep log files?

Docker Logs & Metrics Steps:
First we create the SPM App with the type “Docker” for Docker-specific metrics and then we create a Logsene App for our logs. Then we use the generated App Tokens to run SPM for Docker.

docker run -d -name spm-agent -e SPM_TOKEN=SPM_DOCKER_APP_TOKEN -e LOGSENE_TOKEN=LOGSENE_APP_TOKEN

After a few minutes, you will get Host and Container Metrics together with Events and Logs in SPM, as shown here:

Solr_image_screen_2

Please note that logs from the containers are automatically shipped and parsed! No setup for log shippers? That is correct — there is NO complicated setup of syslog, Logstash, Docker log drivers, etc.  All this work is done by SPM for Docker. For example, each log line has a “node_name” field for the Solr node. It takes the timestamp, severity, class, thread and source from the Solr log and each log is automatically tagged with the container ID and image name. Moving from SPM Metrics to detailed Solr Logs including Exceptions and parsed Stack Traces is just another mouse click away! Look:

Solr_image_screen_3

Multi-Line Exception, captured and parsed from Solr container

solr-logsene

The filters next to field stats on the right side of the screen make it easy to identify containers with the most logs by choosing “container_name”.  That’s just a little detail in the Logsene UI – feel free to explore it by creating Alerts or Kibana 4 Dashboards for your container logs.

Like what you saw here? To monitor Docker and Solr with SPM just get a free account here!  And drop us an email or hit us on Twitter with suggestions, questions or comments.  Solr and Docker are topics we enjoy chatting about with the community!

Filed under: Monitoring, Search Tagged: devops, docker, performance monitoring, solr, spm

Read the original blog entry...

More Stories By Sematext Blog

Sematext is a globally distributed organization that builds innovative Cloud and On Premises solutions for performance monitoring, alerting and anomaly detection (SPM), log management and analytics (Logsene), and search analytics (SSA). We also provide Search and Big Data consulting services and offer 24/7 production support for Solr and Elasticsearch.

@ThingsExpo Stories
DX World EXPO, LLC, a Lighthouse Point, Florida-based startup trade show producer and the creator of "DXWorldEXPO® - Digital Transformation Conference & Expo" has announced its executive management team. The team is headed by Levent Selamoglu, who has been named CEO. "Now is the time for a truly global DX event, to bring together the leading minds from the technology world in a conversation about Digital Transformation," he said in making the announcement.
"Space Monkey by Vivent Smart Home is a product that is a distributed cloud-based edge storage network. Vivent Smart Home, our parent company, is a smart home provider that places a lot of hard drives across homes in North America," explained JT Olds, Director of Engineering, and Brandon Crowfeather, Product Manager, at Vivint Smart Home, in this SYS-CON.tv interview at @ThingsExpo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
SYS-CON Events announced today that Conference Guru has been named “Media Sponsor” of the 22nd International Cloud Expo, which will take place on June 5-7, 2018, at the Javits Center in New York, NY. A valuable conference experience generates new contacts, sales leads, potential strategic partners and potential investors; helps gather competitive intelligence and even provides inspiration for new products and services. Conference Guru works with conference organizers to pass great deals to gre...
The Internet of Things will challenge the status quo of how IT and development organizations operate. Or will it? Certainly the fog layer of IoT requires special insights about data ontology, security and transactional integrity. But the developmental challenges are the same: People, Process and Platform. In his session at @ThingsExpo, Craig Sproule, CEO of Metavine, demonstrated how to move beyond today's coding paradigm and shared the must-have mindsets for removing complexity from the develop...
In his Opening Keynote at 21st Cloud Expo, John Considine, General Manager of IBM Cloud Infrastructure, led attendees through the exciting evolution of the cloud. He looked at this major disruption from the perspective of technology, business models, and what this means for enterprises of all sizes. John Considine is General Manager of Cloud Infrastructure Services at IBM. In that role he is responsible for leading IBM’s public cloud infrastructure including strategy, development, and offering m...
"Evatronix provides design services to companies that need to integrate the IoT technology in their products but they don't necessarily have the expertise, knowledge and design team to do so," explained Adam Morawiec, VP of Business Development at Evatronix, in this SYS-CON.tv interview at @ThingsExpo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
To get the most out of their data, successful companies are not focusing on queries and data lakes, they are actively integrating analytics into their operations with a data-first application development approach. Real-time adjustments to improve revenues, reduce costs, or mitigate risk rely on applications that minimize latency on a variety of data sources. In his session at @BigDataExpo, Jack Norris, Senior Vice President, Data and Applications at MapR Technologies, reviewed best practices to ...
Widespread fragmentation is stalling the growth of the IIoT and making it difficult for partners to work together. The number of software platforms, apps, hardware and connectivity standards is creating paralysis among businesses that are afraid of being locked into a solution. EdgeX Foundry is unifying the community around a common IoT edge framework and an ecosystem of interoperable components.
Large industrial manufacturing organizations are adopting the agile principles of cloud software companies. The industrial manufacturing development process has not scaled over time. Now that design CAD teams are geographically distributed, centralizing their work is key. With large multi-gigabyte projects, outdated tools have stifled industrial team agility, time-to-market milestones, and impacted P&L stakeholders.
"Akvelon is a software development company and we also provide consultancy services to folks who are looking to scale or accelerate their engineering roadmaps," explained Jeremiah Mothersell, Marketing Manager at Akvelon, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
"IBM is really all in on blockchain. We take a look at sort of the history of blockchain ledger technologies. It started out with bitcoin, Ethereum, and IBM evaluated these particular blockchain technologies and found they were anonymous and permissionless and that many companies were looking for permissioned blockchain," stated René Bostic, Technical VP of the IBM Cloud Unit in North America, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Conventi...
In his session at 21st Cloud Expo, Carl J. Levine, Senior Technical Evangelist for NS1, will objectively discuss how DNS is used to solve Digital Transformation challenges in large SaaS applications, CDNs, AdTech platforms, and other demanding use cases. Carl J. Levine is the Senior Technical Evangelist for NS1. A veteran of the Internet Infrastructure space, he has over a decade of experience with startups, networking protocols and Internet infrastructure, combined with the unique ability to it...
22nd International Cloud Expo, taking place June 5-7, 2018, at the Javits Center in New York City, NY, and co-located with the 1st DXWorld Expo will feature technical sessions from a rock star conference faculty and the leading industry players in the world. Cloud computing is now being embraced by a majority of enterprises of all sizes. Yesterday's debate about public vs. private has transformed into the reality of hybrid cloud: a recent survey shows that 74% of enterprises have a hybrid cloud ...
"Cloud Academy is an enterprise training platform for the cloud, specifically public clouds. We offer guided learning experiences on AWS, Azure, Google Cloud and all the surrounding methodologies and technologies that you need to know and your teams need to know in order to leverage the full benefits of the cloud," explained Alex Brower, VP of Marketing at Cloud Academy, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clar...
Gemini is Yahoo’s native and search advertising platform. To ensure the quality of a complex distributed system that spans multiple products and components and across various desktop websites and mobile app and web experiences – both Yahoo owned and operated and third-party syndication (supply), with complex interaction with more than a billion users and numerous advertisers globally (demand) – it becomes imperative to automate a set of end-to-end tests 24x7 to detect bugs and regression. In th...
"MobiDev is a software development company and we do complex, custom software development for everybody from entrepreneurs to large enterprises," explained Alan Winters, U.S. Head of Business Development at MobiDev, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
Coca-Cola’s Google powered digital signage system lays the groundwork for a more valuable connection between Coke and its customers. Digital signs pair software with high-resolution displays so that a message can be changed instantly based on what the operator wants to communicate or sell. In their Day 3 Keynote at 21st Cloud Expo, Greg Chambers, Global Group Director, Digital Innovation, Coca-Cola, and Vidya Nagarajan, a Senior Product Manager at Google, discussed how from store operations and ...
"There's plenty of bandwidth out there but it's never in the right place. So what Cedexis does is uses data to work out the best pathways to get data from the origin to the person who wants to get it," explained Simon Jones, Evangelist and Head of Marketing at Cedexis, in this SYS-CON.tv interview at 21st Cloud Expo, held Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA.
SYS-CON Events announced today that CrowdReviews.com has been named “Media Sponsor” of SYS-CON's 22nd International Cloud Expo, which will take place on June 5–7, 2018, at the Javits Center in New York City, NY. CrowdReviews.com is a transparent online platform for determining which products and services are the best based on the opinion of the crowd. The crowd consists of Internet users that have experienced products and services first-hand and have an interest in letting other potential buye...
SYS-CON Events announced today that Telecom Reseller has been named “Media Sponsor” of SYS-CON's 22nd International Cloud Expo, which will take place on June 5-7, 2018, at the Javits Center in New York, NY. Telecom Reseller reports on Unified Communications, UCaaS, BPaaS for enterprise and SMBs. They report extensively on both customer premises based solutions such as IP-PBX as well as cloud based and hosted platforms.