VirtualTam's bookmarks

1. cli53 - Command line tool for Amazon Route 53 2021-04-09

   tags: cloud/aws, command-line, network/dns

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2. USB filters / isolators for audio applications 2021-01-04

   tags: audio, diy, electronics, hiss, hum, usb

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   Available products:

   • https://www.alldaq.com/en/products/pc-sio/usb-isolators/adq-usb-30-iso/
   • https://pro.intona.eu/en/products/7054/
   • https://www.audiophonics.fr/en/diy-interfaces/audiophonics-usb-isolator-module-adum-4160-raspberry-pi-p-8395.html
   • https://hifimediy.com/product-category/usb-isolators/
   • https://www.amazon.com/AudioQuest-Jitterbug-USB-Filter/dp/B00YTA78FW

   Reviews:

   • https://www.audiosciencereview.com/forum/index.php?threads/audioquest-jitterbug-usb-filter-review.10205/
   • https://www.diyaudio.com/forums/digital-line-level/354894-usb-isolators-filters-audio-passive-active.html
   • https://www.diyaudio.com/forums/pc-based/326069-usb-isolator-dedicated-power.html
   • https://forum.rme-audio.de/viewtopic.php?id=29907
   • https://www.diyaudio.com/forums/digital-line-level/143175-usb-dac-isolation.html
   • https://www.diyaudio.com/forums/pc-based/151844-usb-galvanic-isolation.html
3. Open Distro for Elasticsearch | Open Distro 2020-12-20

   tags: cloud, cloud/aws, machine-learning, observability/elastic/elasticsearch, observability/logging, observability/tracing, programming/java, security/authentication, security/authorization

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   • https://github.com/opendistro-for-elasticsearch
   • https://aws.amazon.com/blogs/aws/new-open-distro-for-elasticsearch/
   • https://opendistro.github.io/for-elasticsearch/blog/releases/2020/12/announcing-trace-analytics/
   • https://logz.io/blog/open-distro-for-elasticsearch/
4. Balthazar Rouberol - Preparing the SRE interview 2020-09-28

   tags: algorithm, infrastructure, infrastructure/site-reliability-engineering, programming/job-interview

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   • https://www.amazon.com/Cracking-Coding-Interview-Programming-Questions/dp/0984782850/ref=sr_1_1?ie=UTF8&qid=1492689425&sr=8-1
   • http://www.columbia.edu/~jxz2101/#
   • https://github.com/adicu/interview_help/
   • https://github.com/nryoung/algorithms
   • https://github.com/keon/algorithms
5. IoT logging with MQTT, Fluentd / Fluent Bit and Loki 2020-08-15

   tags: embedded, fluentd, internet-of-things, network/mqtt, observability/grafana, observability/logging, observability/logging/grafana-loki

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   Open questions, potential solutions or workarounds:

   • Loki does not support out-of-order message ingestion
     • https://github.com/grafana/loki/issues/1544
     • https://github.com/project-hatohol/fluent-plugin-sort
   • There is not Java client for Loki
     • https://github.com/grafana/loki/issues/1158
     • https://grafana.com/docs/loki/latest/api/
     • https://github.com/grafana/loki/tree/master/cmd/fluent-bit
   • The Wiced MQTT queue might be limited depending on the volume of logs
     • https://iotexpert.com/2017/03/08/embedded-world-2017-wiced-wifi-mqtt-and-the-amazon-iot-cloud/
6. What is "AWS Security Scanner" in my server logs? 2020-07-31

   tags: cloud/aws, network, security

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   • https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/configuring-instance-metadata-service.html
   • https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-metadata.html
   • https://docs.aws.amazon.com/cli/latest/reference/ec2/modify-instance-metadata-options.html
   • https://aws.amazon.com/blogs/security/defense-in-depth-open-firewalls-reverse-proxies-ssrf-vulnerabilities-ec2-instance-metadata-service/
   • https://aws.amazon.com/blogs/aws/new-host-based-routing-support-for-aws-application-load-balancers/
   • https://aws.amazon.com/about-aws/whats-new/2018/07/elastic-load-balancing-announces-support-for-redirects-and-fixed-responses-for-application-load-balancer/
   • https://www.reddit.com/r/aws/comments/e18e5n/botexploit_what_is_this_trying_to_do_and_how
   • https://www.reddit.com/r/aws/comments/e18e5n/botexploit_what_is_this_trying_to_do_and_how/f8qympp/
   • https://forums.aws.amazon.com/thread.jspa?threadID=316889
   • https://owasp.org/www-community/attacks/Server_Side_Request_Forgery
   • https://www.wired.com/story/capital-one-paige-thompson-case-hacking-spree/
   • https://krebsonsecurity.com/2019/08/what-we-can-learn-from-the-capital-one-hack/
   • https://krebsonsecurity.com/2019/07/capital-one-data-theft-impacts-106m-people/
   • http://www.thecloudavenue.com/2019/08/how-capital-one-hack-was-achieved-in-aws.html
   • http://www.thecloudavenue.com/2019/11/changes-to-aws-ec2-instance-metadata-service.html
7. Percona Toolkit Documentation 2020-01-21

   tags: database, database/mysql, observability/logging, performance, programming/sql, query

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   • https://www.percona.com/blog/2018/09/13/analyzing-amazon-aurora-slow-logs-pt-query-digest/
   • https://www.jeffgeerling.com/blog/2018/analyzing-mysql-slow-query-log-pt-query-digest
8. AWS | Enable Enhanced Networking with Elastic Network Adapters for vintage OS AMIs 2019-09-17

   tags: chroot, cloud/aws, linux, linux/debian, linux/kernel, virtualization, xen

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   Paravirtual (PV) to Hardware Virtual Machine (HVM):

   • https://stackoverflow.com/questions/24330721/amazon-ec2-how-to-convert-an-existing-pv-ami-to-hvm

   ENA support:

   • https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/enhanced-networking-ena.html
   • https://forums.aws.amazon.com/thread.jspa?threadID=166135
   • https://aws.amazon.com/premiumsupport/knowledge-center/boot-error-linux-m5-c5/
   • https://bugs.centos.org/view.php?id=14107
   • https://ygrene.tech/how-to-enable-ena-support-for-aws-amis-in-5-steps-and-make-your-bamboo-remote-jobs-really-fast-f2a4254a9955

   Build Debian AMIs from scratch:

   • https://bootstrap-vz.readthedocs.io/en/master/
   • https://github.com/andsens/bootstrap-vz
   • https://www.slideshare.net/JamesBromberger/debian-cloud-building-the-debian-amis
   • https://blog.james.rcpt.to/2012/12/06/official-debian-images-on-amazon-web-services-ec2/

   Squeeze:

   • https://lists.debian.org/debian-cloud/2013/02/msg00023.html

   Wheezy:

   • https://lists.debian.org/debian-cloud/2014/10/msg00009.html
   • https://lists.debian.org/debian-cloud/2014/11/msg00000.html

   Boot to chroot:

   • https://unix.stackexchange.com/questions/85714/boot-into-a-chroot
   • https://wiki.debian.org/chroot
   • https://wiki.debian.org/Debootstrap
   • https://superuser.com/questions/384437/booting-linux-system-from-chroot-is-there-a-better-way-to-do-this/384457#384457
   • https://github.com/lemonsqueeze/boot-chroot
9. Amazon Web Services | Auto-scale bind to an elastic IP? 2019-09-09

   tags: cloud, cloud/aws, network, network/firewall, network/ip

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   Use case:

   • Set up an AutoScaling Group with exactly 1 min/max/desired instance
   • Attach an Elastic IP to the active instance

   Usually for interoperability reasons and/or IP-based network rules (80's firewall anyone?).

   • https://stackoverflow.com/questions/34849360/how-to-assign-eip-to-autoscaling-group-of-vpc-in-cloudformation-template
   • https://www.reddit.com/r/aws/comments/6k3gb2/auto_assign_eip/
10. AWS Tutorial: Enable Your Users to Configure Their Own Credentials and MFA Settings - Identity and Access Management 2019-08-08

    tags: cloud/aws, programming/api, security, security/authentication, security/authorization, user

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    • https://aws.amazon.com/blogs/security/how-to-delegate-management-of-multi-factor-authentication-to-aws-iam-users/
    • https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_examples_aws_my-sec-creds-self-manage.html
    • https://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_access-keys.html
11. Comparison of NAT Instances and NAT Gateways - Amazon Virtual Private Cloud 2019-06-27

    tags: cloud, cloud/aws, network, network/router, security

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    • https://www.theguild.nl/cost-saving-with-nat-instances/
    • https://dzone.com/articles/nat-instance-vs-nat-gateway
    • https://docs.aws.amazon.com/vpc/latest/userguide/VPC_NAT_Instance.html
    • https://docs.aws.amazon.com/vpc/latest/userguide/vpc-nat-gateway.html
    • https://aws.amazon.com/blogs/aws/new-managed-nat-network-address-translation-gateway-for-aws/
    • https://dzone.com/articles/aws-vpc-nat-instance-failover
    • https://aws.amazon.com/articles/high-availability-for-amazon-vpc-nat-instances-an-example/
12. CloudWatch GetMetricData support by mtanda · Pull Request #11624 · grafana/grafana · GitHub 2019-04-04

    tags: cloud/aws, observability, observability/grafana

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    • https://docs.aws.amazon.com/AmazonCloudWatch/latest/APIReference/API_MetricDataQuery.html
    • https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/using-metric-math.html
    • https://community.grafana.com/t/how-to-plot-the-rate-of-change-or-the-incline-of-a-line-plot/14334/6
13. How can I get the size of an Amazon S3 bucket? - Server Fault 2019-03-25

    tags: bucket, cloud/aws, command-line, s3, storage

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14. amazon web services - AWS S3 Bucket name already exists - Server Fault 2019-02-25

    tags: cloud/aws, fqdn, network/url, s3, storage

    [ permalink ]

    • https://docs.aws.amazon.com/AmazonS3/latest/dev/UsingBucket.html
    • https://docs.aws.amazon.com/AmazonS3/latest/dev/BucketRestrictions.html
    • https://www.reddit.com/r/aws/comments/8axd8e/how_come_s3_bucket_names_are_globally_unique/
15. amazon web services - How should I handle `deposed` resources in Terraform? - Stack Overflow 2019-02-19

    tags: cloud/aws, configuration-management/terraform

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    • https://github.com/hashicorp/terraform/issues/10753#issuecomment-267638933
16. Monitoring OS metrics for Amazon RDS with Grafana - Percona Database Performance Blog 2019-02-14

    tags: cloud/aws, database, database/mysql, observability, observability/grafana

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    • https://grafana.com/dashboards/707
    • https://grafana.com/dashboards/702
17. eksctl - a CLI for Amazon EKS | a CLI for Amazon EKS 2019-02-04

    tags: cloud, cloud/aws, command-line, linux/container/kubernetes

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    • https://github.com/weaveworks/eksctl
18. How to find Unused Amazon EC2 Security groups - Stack Overflow 2019-01-22

    tags: cloud, cloud/aws, infrastructure, network, programming/python, security

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    • https://gist.github.com/miketheman/2630437
    • https://gist.github.com/TomRyan-321/0cf6e48937cbe9513afc50117d6ffd6f
19. amazon s3 - What is the purpose of the expiration time in signed S3 urls? - Information Security Stack Exchange 2019-01-10

    tags: cloud/aws, cryptography, cryptography/hash, security, security/authorization

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20. CI/CD for Lambda Functions with Jenkins – A Cloud Guru 2018-12-19

    tags: amazon, cloud/aws, continuous-integration, continuous-integration/jenkins

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    • https://jenkins.io/doc/pipeline/steps/aws-lambda/
    • https://wiki.jenkins.io/display/JENKINS/AWS+Lambda+Plugin
    • https://github.com/jenkinsci/aws-lambda-plugin
    • https://docs.aws.amazon.com/lambda/latest/dg/lambda-python-how-to-create-deployment-package.html