- Arch-devops - lists.archlinux.org

[arch-devops] Mirrorbrain
by Phillip Smith 24 Sep '18

24 Sep '18

It's been discussed in the past, but I thought it worth having a semi-formal and documented discussion about it. Do we think setting up mirrorbrain[0] would be a worthwhile service? For those not familiar, the elevator pitch is that it's an open-source download redirector to coordinate a simple CDN. It is used by a number of open-source projects such as vlc, Gnome, KDE, LibreOffice and OpenSUSE. Architecturally speaking, it maintains a list of our mirrors and local copy of our repos, and monitors those mirrors for availability and staleness. HTTP(s) clients (ie, pacman) are then redirected to an appropriate mirror based on the clients geographic location and mirror health. Benefits include: 1. Ensuring users always receive up-to-date packages (mirrorbrain won't redirect to a mirror if that mirrors version of that package is outdated compared to the authoritative repository). 2. Automated monitoring of our mirror network to proactively detect stale or broken mirrors. Mirrorlist files (ie, /etc/pacman.d/mirrorlist) can be automatically generated based on MirrorBrain's data. 3. Reduced load on core mirrors, and load-balancing (for example, a 1Gbit mirror can be weighted to receive 10x the traffic of a 100MBps mirror). 4. Automatic MetaLink and Torrent file generation, with web-seeds (currently handled by hefur on luna?). Exceptions to redirection can be applied, for example to ensure security-sensitive files (checksum files perhaps) are always served directly from the authoritative repo. Requirements are pretty basic; apache with mod_asn, postgresql, and some python+perl modules. It can be run behind a reverse-proxy if we wanted to hide apache behind nginx. It's not a particular fast-moving project (last release 2014) but that's a reflection of it's stability IMHO. What do others think? I'm happy to take on the implementation project. Cheers, ~p [0] http://mirrorbrain.org/

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[arch-devops] Centralized log monitoring and alerting?
by Andrew Crerar 11 Sep '18

11 Sep '18

Hi all, On 2018-07-28 there were some discussions in #archlinux-devops around setting up some sort of centralized logging/monitoring/alerting solution for the various services on Apollo (and maybe other?) server(s). I had mentioned possibly using the ELK[1] stack for this task. There was some back and forth about it potentially being a bit heavy handed for what was needed and how we would most likely need to repurpose/dedicate something like nymeria to handle the stack. There was also the suggestion of possibly using something like tenshi[2] if we're aiming for a low overhead solution, however, there would be much writing of the regexes. With that being said, the purpose of this email is to have a more formal discussion around what we're trying to capture from the logs, the actions we want to have taken with what ends up being captured, and possibly come to a consensus on what tool(s) we could leverage. Thoughts? Regards, Andrew [1] https://www.elastic.co/de/elk-stack [2]https://github.com/inversepath/tenshi

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[arch-devops] Shutting down dragon (backup server)
by Florian Pritz 31 Aug '18

31 Aug '18

Hi, I'll turn off dragon.archlinux.org in 2 weeks unless someone objects. It used to host our backups, but these have since moved to vostok.archlinux.org. Evangelos and me checked if there are any important files left on there, but we couldn't find any. If someone else wants to check, you'll have two weeks to speak up. Otherwise I'll null the disks and cancel the contract. Florian

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[arch-devops] Github Domain Verification
by Giancarlo Razzolini 10 Aug '18

10 Aug '18

Hi All, I have added verification for our organization's domain on github [0]. This is an extra security feature that shows a "verified" badge [1] on our organization's profile. This is to help avoid impersonations to both our users and to our developers. Make sure you're always seeing the verified badge when using it. Regards, Giancarlo Razzolini [0] https://help.github.com/articles/verifying-your-organization-s-domain/ [1] https://paste.xinu.at/CgBNjk/

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[arch-devops] Hetzner 2FA and CAA added to domains
by Giancarlo Razzolini 07 Aug '18

07 Aug '18

Hi All, I have enabled Certificate Authority Authorization (RFC 6844) on both our main domains, archlinux.org and pkgbuild.com. Since we only use letsencrypt to issue certificates, I have added a CAA record only allowing it to issue SSL certificates. We can easily change it if needed in the future. I have also enabled 2FA for hetzner. Since it allows more than one token, the idea is for each one of us in the devops team to have a separate token. I'm going to send you all an encrypted email with the recovery key. This key should only be used in the unlikely event that we have any of our 2FA compromised or we need to login to the account in and emergency. If we use this recovery key, a new one should be issued and emailed to all the members again. I have created a token for myself, and I'm going to add another "master" token that I'll add to the ansible vault. You guys can use this token to login and create another for yourself. Please add your ansible username to the description, like I have done for my token. Aaron, since you don't have root access to the ansible repository, I can either give you access or, if you don't want to handle ansible stuff, I can email separately to you both the recovery key and the "master" token seed so you can create your own. Cheers, Giancarlo Razzolini

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[arch-devops] [RFC] Better security through Content Security Policy and other headers.
by Jelle van der Waa 04 Aug '18

04 Aug '18

Hi All, Below is a proposal to increase our websecurity for *.archlinux.org # Goal Better security through Content Security Policy and other headers. # How Either sending CSP headers via nginx or modifying the web application to send the correct headers. Configuring via nginx is probably the easiest way to distribute these changes. # Which sites bugs.archlinux.org bbs.archlinux.org wiki.archlinux.org git.archlinux.org pkgbuild.com pkgbuild.com/~* mailman.archlinux.org kanboard.archlinux.org planet.archlinux.org archlinux.org (django) aur.archlinux.org Excluded is security.archlinux.org, which already includes all of the below headers via flask-talisman. # Which headers ## X-XSS-Protection The HTTP X-XSS-Protection response header is a feature of Internet Explorer, Chrome and Safari that stops pages from loading when they detect reflected cross-site scripting (XSS) attacks. This is mostly superseded by CSP, but still is not harmfull to add. add_header X-Xss-Protection "1; mode=block" always; ## X-Content-Type-Options The X-Content-Type-Options response HTTP header is a marker used by the server to indicate that the MIME types advertised in the Content-Type headers should not be changed and be followed. Check bugtracker/archweb if this breaks attachments or other files which are download. add_header X-Content-Type-Options "nosniff" always; ## X-Frame-Options The X-Frame-Options HTTP response header can be used to indicate whether or not a browser should be allowed to render a page in a <frame>, <iframe> or <object> . Sites can use this to avoid clickjacking attacks, by ensuring that their content is not embedded into other sites. I don't believe we want to allow embedding our websites. add_header X-Frame-Options "SAMEORIGIN" always; ## Content-Security-Policy The HTTP Content-Security-Policy response header allows web site administrators to control resources the user agent is allowed to load for a given page. With a few exceptions, policies mostly involve specifying server origins and script endpoints. This helps guard against cross-site scripting attacks (XSS). This might differ a bit per site, Archweb for example requires unsafe-inline / unsafe-eval for JavaScript and CSS. But all our loaded content should be from the same origin and restricted. An example policy would be: add_header Content-Security-Policy "default-src 'self'; style-src 'self'; font-src 'self'; form-action 'self';" # Challenges * inline JavaScript => archweb/aurweb => use a nonce or rewrite. * inline CSS => archweb/aurweb => use a nonce or rewrite. * unsafe-eval => this should never be allowed and should be fixed # Verifying The following website nicely shows the enabled security headers. https://securityheaders.com/ More information about these headers can be found here. https://scotthelme.co.uk/hardening-your-http-response-headers/ -- Jelle van der Waa

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[arch-devops] Secondary backup ideas (Task #50)
by Phillip Smith 27 Jul '18

27 Jul '18

(Sorry, I can't reply to the original thread as I wasn't a member of the list at the time) Can I throw restic[0] in to the mix? It's very similar to borg, but super fast[1]. I moved away from borg a while ago for various reasons. It's written in golang, so it's a simple ELF executable to deploy. Supports lots of destinations[2] and multiple keys [3]. Specifically, I'm thinking the multiple key feature would allow us to have the client push backups to the backup server over a read-only connection (SSH, S3, rsync, whatever), then be able to run restic server-side to handle the cleanups. Anyway, 'food for thought' that we can discuss. Cheers, ~p [0] https://restic.net/ [1] My home desktop backup: ~121gb of source data on spinning-rust (not SSD); incremental backup takes ~8 seconds: scanned 11482 directories, 72707 files in 0:01 [0:07] 100.00% 13.298 GiB/s 121.249 GiB / 121.249 GiB 84189 / 84189 items 0 errors ETA 0:02 duration: 0:07, 15798.45MiB/s snapshot 8c4aea6d saved [2] https://restic.readthedocs.io/en/stable/030_preparing_a_new_repo.html [3] https://restic.readthedocs.io/en/stable/070_encryption.html

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[arch-devops] archweb questions
by Ross Boulet 23 Apr '18

23 Apr '18

Just a curiosity question. I posted a question [1] to the Arch Linux Forums regarding a function on the Arch website. Someone suggested I file a bug report, so the developers would be aware. But I looked at the "Projects in Git" [2] from the Arch Linux home page and did not see any recent updates to "archweb". I posted a question [3] in the arch-mirrors mailing list and was referred here. This leads me to a couple of questions: First, have I done all the reporting needed to get this issue to the proper place? Second, is the "archweb" in the git at [2] the same thing as the website, and if so, why didn't it show any updates? Thanks [1] https://bbs.archlinux.org/viewtopic.php?pid=1781381 [2] https://git.archlinux.org/ [3] https://lists.archlinux.org/pipermail/arch-mirrors/2018-April/000736.html -- Ross Boulet rossb(a)rossb.com -

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Re: [arch-devops] [arch-dev-public] Archweb (archlinux.org) upgrade
by Giancarlo Razzolini 21 Apr '18

21 Apr '18

Em abril 19, 2018 17:04 Jelle van der Waa escreveu: > Hi all, > > Tommorow evening we will be updating https://archlinux.org (archweb), so > expect some downtime due to upgrading. Since it's a major version bump > 1.8 => 1.11 some issues might occur, but in general it should be a > smooth upgrade (tm). > > P.S. Next up is porting archweb to Python 3, any help is appreciated! > Hi all, I expect we should have a downtime of about 1-2 hours. If you notice anything different post upgrade, please let us know. Both me and Jelle are going to probably be around on IRC too during the upgrade. Regards, Giancarlo Razzolini

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[arch-devops] Fwd: Archweb (archlinux.org) upgrade
by Jelle van der Waa 19 Apr '18

19 Apr '18

----- Forwarded message from Jelle van der Waa <jelle(a)vdwaa.nl> ----- > Date: Thu, 19 Apr 2018 22:04:21 +0200 > From: Jelle van der Waa <jelle(a)vdwaa.nl> > To: arch-devops(a)archlinux.org, arch-dev-public(a)archlinux.org > Subject: Archweb (archlinux.org) upgrade > > Hi all, > > Tommorow evening we will be updating https://archlinux.org (archweb), so > expect some downtime due to upgrading. Since it's a major version bump > 1.8 => 1.11 some issues might occur, but in general it should be a > smooth upgrade (tm). > > P.S. Next up is porting archweb to Python 3, any help is appreciated! > > -- > Jelle van der Waa ----- End forwarded message ----- -- Jelle van der Waa

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