Category: Web
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Spam to aol.com
Some open relay spams a lot with this kind of messages: Delivered-To: abondarenko@gmail.com Received: by 2002:aa6:c2c8:0:b0:16a:1e8a:2c54 with SMTP id i8csp1735690lkp; Fri, 17 Dec 2021 09:01:32 -0800 (PST) X-Google-Smtp-Source: ABdhPJwYX2tMoVU+eJjTP1qslWMcUikk61IbaTmPrak3WWvb1fbofSlY0ftgYqX9WBAiH5rL/PIy X-Received: by 2002:a2e:bf1e:: with SMTP id c30mr3535718ljr.408.1639760491902; Fri, 17 Dec 2021 09:01:31 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1639760491; cv=none; d=google.com; s=arc-20160816; b=Pp3pD2GTGMOH8vYn+zs+n31Y3/RsUhm8SrzMWHMf4MAqnnojNhRemwUANtHgYhjd/9 M9F2iuIpJkYkdd5SqyzP2623PIWs8ahgMoEWWU5s9exmqAhICUtDc0BODLwWpzw1pbYi +XoA0yQkL79W+wWdCnn2D+EGR1LCr2dxnrH4A3OgsTTXG573/yQ3fAxMvT/qdSTCHf+X VtaHKSEHgU5vkfo20EF6hKF9h46d/KyaMspGtr4XhVeUPgvl3EWf/LilXOnbcctYH+q7 Q2ys7jcbeyltrTxwhVhJAy0gUu2ozZvSYh1SqR5MeWSbIb5/ClGinRy5cg5nimLi2jig…
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Let’s encrypt cert updates
Let’s encrypt is wonderful, but certificate are getting expired every 3 months. Since it’s a first time I need to renew them, I have done it manually. The tool authenticates you (by default) with special file created in the .well-know/acme-challenge directory of the root, so the blog engine should not interfere or rewrite anything and should not return it’s own 404 page. Historically my nginx.conf has lots of existing redirects and rules,…
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TOC and collapsible block samples
I am writing some tool for my daily work that produces fancy HTML page from RHEL, CentOS or Fedora log and config files, so it would be more easy to read them. Nothing special, just some bash scripts with sed, grep and awk that produce HTML with some CSS and JQuery. TOC I really liked: http://projects.jga.me/toc/ It’s very easy to use and implement, it just…
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I2P browser
https://c.na7.visual.force.com/500A000000Vn1HlIAJ
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Today’s news on security
Article: https://techcrunch.com/2016/10/21/many-sites-including-twitter-and-spotify-suffering-outage/
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Interesing “feature” of the Mediawiki
Just have a bit digged in the Mediawiki, that is quite popular Wiki engine 🙂 Found out that the articles are located in the “prefix_text” table, with all the changes, obviously. So changes are being stored as a new copy of the article: if you have 100kb article and you need to save a change in 1 symbol, there would be 100kb growth (plus additional data) of the table. No wonder that…
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Backuping mysql
Recently I have to backup mysql database on quite heavily loaded server and I wanted to make backup daily on one hand and I wanted them not to affect production on the other. DB size is more than 150 Gb, about 50k users daily. First approach was ty try to simply run musqldump and see what would happen. Site was down right after the backup has begun. Then…
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Leaseweb IPv6 PTR
Just for the record: Leaseweb does not support PTR record setting for the IPv6 address from the web panel, but you can ask the support team to set it with ticket. Google rejects my mail that comes from the IPv6 network with “PTR not found” message.