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README.md
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README.md
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# m2.nz
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Hugo
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Theme: https://github.com/vaga/hugo-theme-m10c
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config.toml
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config.toml
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baseURL = 'https://m2.nz/'
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baseURL = 'https://m2.nz/'
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languageCode = 'en-us'
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languageCode = 'en-us'
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title = 'Daniel Mason'
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title = 'm2.nz'
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theme = "m10c"
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theme = "m10c"
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[markup.goldmark.renderer]
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unsafe = true
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[menu]
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[menu]
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[[menu.main]]
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[[menu.main]]
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identifier = "home"
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identifier = "home"
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name = "Tags"
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name = "Tags"
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url = "/tags/"
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url = "/tags/"
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weight = 2
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weight = 2
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# [[menu.main]]
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[[menu.main]]
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# identifier = "about"
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identifier = "about"
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# name = "About"
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name = "CV"
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# url = "/about/"
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url = "/cv/"
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# weight = 3
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weight = 3
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[params]
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[params]
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author = "Daniel Mason"
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author = "Daniel Mason"
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favicon = "/favicon.ico"
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favicon = "/favicon.ico"
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[[params.social]]
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[[params.social]]
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icon = "gitlab"
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icon = "git-pull-request"
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name = "GitLab"
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name = "GitLab"
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url = "https://gitlab.com/idanoo"
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url = "https://git.m2.nz/idanoo"
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[[params.social]]
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icon = "send"
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name = "Mastodon"
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url = "https://mastodon.nz/@idanoo"
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[[params.social]]
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icon = "camera"
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name = "Pixelfed"
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url = "https://pixelfed.nz/idanoo"
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[[params.social]]
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icon = "message-square"
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name = "Matrix"
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url = "https://matrix.to/#/@idanoo:mtrx.nz"
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[params.style]
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[params.style]
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darkestColor = "#242930"
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darkestColor = "#242930"
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darkColor = "#353b43"
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darkColor = "#353b43"
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lightColor = "#afbac4"
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lightColor = "#afbac4"
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content/cv.md
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content/cv.md
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title = "Employment History"
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+++
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<div style="display: flex;">
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<div style="flex-direction: row; margin-right: 20px">
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<img alt="ezyVet Logo" title="ezyVet Logo" src="/ezyvet_logo.png">
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</div>
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<div style="flex-direction: row">
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<h3 style="margin-top: 5px">ezyVet</h3>
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<h4 style="margin-top:-16px; color: #afbac4">Site Reliability Engineer</h4>
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<p style="margin-top:-20px;">August 2019 - Current</p>
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</div>
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</div>
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My role at ezyVet is primarily focused on improving performance and response time across the full stack from PHP, MySQL and ElasticSearch improvements to optimizing AWS usage and cost.
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- Pushing for latest versions of services to keep frameworks up to date and utilize any performance improvements (PHP, MySQL, Elasticsearch, Redis upgrades)
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- Building automation pipelines through GitLab CI
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- Experience building a cross-platform Go application utilizing Websockets with AWS API Gateway and SQS/SNS/DynamoDB/Lambda/Terraform
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- Creating a full docker development environment for engineers to improve development workflows
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- Reducing RDS load and improving SQL query response time via query restructuring to make better use of compound indexes and foreign keys
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- Rebuilding Elasticsearch clusters to improve redundancy and response time with optimised indexes
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- Writing custom service monitoring tools in Go that interface directly with Docker, ElasticSearch and PHP-FPM
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- Optimising MySQL parameter groups to get the most out of each instance
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<br/>
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<div style="display: flex;">
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<div style="flex-direction: row; margin-right: 20px; margin-left: 5px">
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<img alt="Catalyst IT Logo" width="90" title="Catalyst IT Logo" src="/catalyst_logo.png">
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</div>
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<div style="flex-direction: row">
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<h3 style="margin-top: 5px">Catalyst IT</h3>
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<h4 style="margin-top:-16px; color: #afbac4">Devops Engineer</h4>
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<p style="margin-top:-20px;">October 2018 - August 2019</p>
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</div>
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</div>
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At Catalyst, I worked directly with several large corporate clients doing routine patching, performance improvements and general BAU. While primarily configuring CI/CD pipelines for full automated tested and deployments, I also gained experience with helm chart deployments into Kubernetes clusters hosted on OpenStack.I have also had the opportunity to gain more experience working with Puppet, Ansible and GitLab CI.
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<br/>
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<div style="display: flex;">
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<div style="flex-direction: row; margin-right: 20px">
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<img alt="ezyVet Logo" title="ezyVet Logo" src="/ezyvet_logo.png">
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</div>
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<div style="flex-direction: row">
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<h3 style="margin-top: 5px">ezyVet</h3>
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<h4 style="margin-top:-16px; color: #afbac4">Cloud Environment and Application Engineer</h4>
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<p style="margin-top:-20px;">August 2017 - October 2018</p>
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</div>
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</div>
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At ezyVet, I was primarily in charge of reviewing and merging code into our production environment as well as being our in-house DevOps/Infrastructure person. I occasionally did development work as well. In this position I gained vast experience in multiple areas as outlined below.
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The position currently included the following responsibilities:
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- Setting up and improving our CI/CD processes.
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- Maintaining and constantly improving our environment. (AWS/Terraform)
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- Setting up custom alerts / metrics with Cloudwatch & Grafana.
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- Responding proactively to the above alerts to fix potential issues.
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- Heavily involved in rolling out new technologies to our stack.
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- Revision, escalation and resolution of tickets and other critical issues.
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- Mentored Junior Developers through their induction into ezyVet.
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DevOps:
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- AWS: Consistently Improving our infrastructure to be efficient and reliable
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- Linux: Daily experience with Debian, Ubuntu and Arch.
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- CI / CD: Setting up and maintaining GitLab runners to run our Unit Tests / Automatic deploy pipelines inside docker containers.
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- Packer/Chef/Vagrant: Building custom AMI images for AWS & Vagrant for our development machines.
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- Terraform: Assisted migration of our AWS environments to code.
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- Virtualization: Setting up Vagrant / Virtual Box environments that mock our production environment.
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Programming:
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- PHP: Building small features and day-to-day bug fixes as well.
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- MySQL.
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- Shell / Bash: Created custom scripts to achieve specific goals.
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- Python / Node.js: Lambda functions in serverless.
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- HTML / CSS / JS / jQuery.
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Management:
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- Code Review: In charge of reviewing all code before it gets merged in to our production branches.
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- JIRA / Confluence / Freshdesk: Primarily used JIRA for ticket-tracking and Confluence for In-house documentation.
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- Mentoring: I have taken on several junior developers over the 2 years to train them and assist them in becoming familiar with out code-base and work-flow.
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<br/>
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<div style="display: flex;">
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<div style="flex-direction: row; margin-right: 20px">
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<img alt="ezyVet Logo" title="ezyVet Logo" src="/ezyvet_logo.png">
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</div>
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<div style="flex-direction: row">
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<h3 style="margin-top: 5px">ezyVet</h3>
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<h4 style="margin-top:-16px; color: #afbac4">Full Stack Developer</h4>
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<p style="margin-top:-20px;">March 2016 - August 2017</p>
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</div>
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</div>
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Focused on building new features and improving our cloud environment. Primarily working in PHP.
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content/posts/proxmox_rm_recovery.md
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title = "Recovering from a root 'rm' and why you need backups"
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tags = ["recovery", "backup", "proxmox"]
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date = "2021-02-06"
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description = "test"
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Last week I was finally getting around to fixing my backup tooling and validating the recovery procedures. I thought it would be a good idea to have rolling nightly backups on a secondary ZFS pool with weekly syncs to an external disk. I ended up using this exact command to purge the rolling backups:
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> `$ find ${BACKUP_FOLDER}/* -mtime +${DAYS_TO_KEEP} -exec rm {} \;`
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Before we go any further, I want to point out that I was using the variable `${BACKUP_DIR}`, not `${BACKUP_FOLDER}`.
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Can you see where this is going? Yeah.. I didn't pick that up before running my new majestic backup script. Half an hour later I came back to pages of ssh logs resembling `/bin/rm: command not found`. Oops. I instantly knew what had happened, I'd completely written off my Proxmox host and I was lucky it removed the `/bin/rm` binary before removing any actual data.
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Further investigation showed that I'd wiped most of /bin and the system was barely usable, I still had rsync.. yay! I quickly shutdown all of my containers/vms and rsync'd `/etc` to my primary ZFS cluster before rebooting to a fresh Proxmox install. After reformatting my root drive and reinstalling from scratch, I copied `/etc/pve/lxc` and
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`/etc/pve/qemu-sever` back into place, ran zpool import `{data,storage}` and gave it one more reboot.
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I have never been so relieved to check and see all of my containers booting up back to their normal state. There was one or two other small things I had to fix up post-install such as reinstall `nfs-kernel-server` and several other packages. Overal I was pretty lucky I could copy my container configs before reinstalling and total downtime was under an hour.
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### Backups are important
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**Test your backups.**
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Don't get caught out and expect everything to be there when you really need it.
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