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It’s really worth taking a step back now and looking at what you’ve really done, if you’ve been putting the picture together: you have set up the skeleton of a small startup company, with name, mail, web, and file servers, and once you do the AWS lab, a code repositoryand two sites linked by VPN, one in a private cloud, one in a public cloud … without buying a single piece of hardware or going even once to a data center.4 attachmentsSlide 1 of 4

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CS 470: Unix/Linux Sysadmin Summer 2021 Lab 9 patching, grading, and the reaper ‼ IMPORTANT NOTE: EXPECT AND WATCH FOR ERRATA HERE ‼ At last, handing in and evaluating all your homework. It’s really worth taking a step back now and looking at what you’ve really done, if you’ve been putting the picture together: you have set up the skeleton of a small startup company, with name, mail, web, and file servers, and once you do the AWS lab, a code repository and two sites linked by VPN, one in a private cloud, one in a public cloud … without buying a single piece of hardware or going even once to a data center. Not bad for six weeks, eh? Six weeks ago, lots of you were total noobs. Pat yourself on the back. It’s also really worth noting that we cut lots of corners due to: • • • limitations of our hardware and network setup, like not having a publicly routable IP, our private network, like cutting out encryption certificates for services, which we would never, ever do in a real company, and to make sure no more was spent out of pocket, otherwise we’d each have registered a domain name and set up real inbound/outbound mail servers. Please keep all this in mind when and if using the materials as a reference. part zero: grading configuration Your grading configuration should be your first five VMs, up and running, from labs 1, 2, 3, 4, and 5. Lab 6 is graded via the lab 2 VM and the artifacts you were asked to store on your NFS server at the end of that lab. part one: patching 1. First, let’s bring the base operating system software up to date on each VM. In real life, we often test patches in test environments before deploying them to production environments. OpenBSD: $ sudo syspatch You set up a cron job to update the ports tree … but you haven’t been looking at the results. Add the following command as a cron job, and run it immediately to see if any of your ports have gotten out of date … # /usr/ports/infrastructure/bin/pkg_outdated … and if they have, update them! 1 2. FreeBSD: $ sudo freebsd-update fetch install We set up an up-to-date ports tree with portsnap … this is the command we use to check if any ports or packages are outdated … $ pkg version -l ” cs470.local) download_frd=1) errata v5, 8/16/2021: • Fixed broken SSH config snippet in step #9. (cs470 -> cs470.local) (https://sdsu.instructure.com/files/3193716/download? • Clarified grading setup in partJul zero. lecture_210707.pdf 7, 2021 Jul 7, 2021 Peter Bartoli (https://sds… download_frd=1) • Solaris memory guidance in step #5. • NEW step #12 for feedback pipeline for lab 6 grading bugs in the reaper. lab6v3.pdf lecture_210712.pdf (https://sdsu.instructure.com/files/3205508/download? Jul 12, 2021 Jul 12, 2021 download_frd=1) !! IMPORTANT NOTE: EXPECT AND WATCH FOR ERRATA HERE !! lecture_210719.pdf (https://sdsu.instructure.com/files/3226618/download? Jul 19, 2021 download_frd=1) 3.6 MB 1.1 MB 96 KB ( 129 KB Peter Bartoli (https://sds… 1.2 MB At last, handing in and evaluating all your homework. Jul 19, 2021 Peter Bartoli (https://sds… 37 KB It’s really worth taking a step back now and looking at what you’ve really done, if you’ve been putting the picture together: you have set up the skeleton of a small startup company, with name, mail, web, and file (https://sdsu.instructure.com/files/3277054/download? servers, and once you do the AWS lab, a code repository and two sites linked by VPN, one in a private cloud, lecture_210802.pdf Aug 2, 2021 Aug 2, 2021 Peter Bartoli (https://sds… 35 KB download_frd=1) one in a public cloud … without buying a single piece of hardware or going even once to a data center. Not bad for six weeks, eh? Six weeks ago, lots of you were total noobs. Pat yourself on the back. lecture_210809.pdf MoU.pdf (https://sdsu.instructure.com/files/3316200/download? Aug 9, 2021 download_frd=1) Aug 9, 2021 Peter Bartoli (https://sds… 32 KB Aug 2, 2021 Aug 2, 2021 Peter Bartoli (https://sds… 65 KB (https://sdsu.instructure.com/files/3211686/download? Jul 14, 2021 download_frd=1) Jul 14, 2021 Peter Bartoli (https://sds… 27 KB (https://sdsu.instructure.com/files/3248920/download? Jul 26, 2021 download_frd=1) Jul 26, 2021 Peter Bartoli (https://sds… 58 KB Jul 7, 2021 Peter Bartoli (https://sds… 136 KB (https://sdsu.instructure.com/files/3276361/download? download_frd=1) notes_lab_210714.pdf schedule.pdf (https://sdsu.instructure.com/files/3192604/download? Jul 7, 2021 download_frd=1) syllabus.pdf https://sdsu.instructure.com/courses/59703/files?preview=3372190 Page 1 of 2 Files 8/16/21, 10:28 AM All My Files https://sdsu.instructure.com/courses/59703/files?preview=3372190 Page 2 of 2 CS 470: Unix/Linux Sysadmin Summer 2021 Lab 9 patching, grading, and the reaper errata v2, 8/12/2021: • Added in lab 7 to part zero and steps 4 and 7; again, sorry for the late edition, but it had to be done for completeness. errata v3, 8/12/2021: • Added lab 7 to step #8. • Added clarification in step #9 to make sure EDORAS is in your known_hosts file. If you’re SSHing into EDORAS for the first time from any lab VM with the reaper, SSH agent forwarding will appear to fail. errata v4, 8/13/2021: • Fixed broken SSH config snippet in step #9. (cs470 -> cs470.local) errata v5, 8/16/2021: • Fixed broken SSH config snippet in step #9. (cs470 -> cs470.local) • Clarified grading setup in part zero. • Solaris memory guidance in step #5. • NEW step #12 for feedback pipeline for lab 6 grading bugs in the reaper. ‼ IMPORTANT NOTE: EXPECT AND WATCH FOR ERRATA HERE ‼ At last, handing in and evaluating all your homework. It’s really worth taking a step back now and looking at what you’ve really done, if you’ve been putting the picture together: you have set up the skeleton of a small startup company, with name, mail, web, and file servers, and once you do the AWS lab, a code repository and two sites linked by VPN, one in a private cloud, one in a public cloud … without buying a single piece of hardware or going even once to a data center. Not bad for six weeks, eh? Six weeks ago, lots of you were total noobs. Pat yourself on the back. It’s also really worth noting that we cut lots of corners due to: • • • limitations of our hardware and network setup, like not having a publicly routable IP, our private network, like cutting out encryption certificates for services, which we would never, ever do in a real company, and to make sure no more was spent out of pocket, otherwise we’d each have registered a domain name and set up real inbound/outbound mail servers. Please keep all this in mind when and if using the materials as a reference. part zero: grading configuration Your grading configuration should be your first five VMs, up and running on your computer, plus lab seven. You will run the reaper from your VMs from labs 1, 2, 3, 4, 5, and 7. 1 Lab 6 is graded via the lab 2 VM and the artifacts you were asked to store on your NFS server at the end of that lab. part one: patching 1. First, let’s bring the base operating system software up to date on each VM. In real life, we often test patches in test environments before deploying them to production environments. OpenBSD: $ sudo syspatch You set up a cron job to update the ports tree … but you haven’t been looking at the results. Add the following command as a cron job, and run it immediately to see if any of your ports have gotten out of date … # /usr/ports/infrastructure/bin/pkg_outdated … and if they have, update them! 2. FreeBSD: $ sudo freebsd-update fetch install We set up an up-to-date ports tree with portsnap … this is the command we use to check if any ports or packages are outdated … $ pkg version -l “

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