Category Archives: Troubleshooting

Various problems solutions

TestRail: reset admin password
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13 May 2019

We have a TestRail installation but suddenly lose its Admin user password. The Reset Password says that “Email sending failed” although email was configured and users are able to get emails from the server. Also, the log /var/www/testrail.example.com/logs/log-2019-05-13.php didn’t says anything so will reset password in another way – by update this TestRail MySQL database… Read More »

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Arch Linux: Albion Online – Unable to preload the following plugins: libSDL2-2.0.so.0
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14 April 2019

Didn’t play in Albion Online for a while, but recalled about it and tried to play on my Arch Linux. It works fine from the Steam client, but I bought with a start package some time ago and can’t log in to Steam’s version with my old credentials. Okay – download game from the https://albiononline.com/ru/download,… Read More »

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Redis: Sentinel – bind 0.0.0.0, the localhost issue and the announce-ip option
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10 April 2019

Originally, in a Sentinel’s configs, I have used the bind 0.0.0.0 to make them accessible from external hosts. Because of this when I started rolling out this setup on a real environment faced with an issue when Sentinels could not determine a Master host and other Sentinel hosts. In this post – such an issue… Read More »

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Jenkins: your Jenkins data directory is almost full and automated disk cleanup
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27 March 2019

We have a Jenkins instance with a bunch of jobs. After a while – a new warning appeared: Jenkins: your Jenkins data directory /var/lib/jenkins (aka JENKINS_HOME) is almost full Checked disk usage with the ncdu and found few jobs which used really lot of space: [simterm] root@jenkins-production:/data/jenkins# du -h –max-depth 1 jobs/ .. 25G jobs/APITests …… Read More »

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Linux: telegram-desktop – no systray icon
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13 March 2019

Have the telegram-desktop installed via pacman on the Arch Linux. After starting – no systray’s icon present and thus can’t see new messages and even can’t exit in a normal way. This issue is not specific for the Arch Linux and happens on any Linux systems. Go to the Google and make search with “telegram linux… Read More »

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VirtualBox: Nonexistent host networking interface, name ‘wlp13s0’
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11 March 2019

Have the ~/VirtualBox VMs directory copied from my old laptop to a new PC. Now during VM’s launch – VirtualBox says: Nonexistent host networking interface, name ‘wlp13s0’ (VERR_INTERNAL_ERROR). Result Code: NS_ERROR_FAILURE (0x80004005) Component: ConsoleWrap Interface: IConsole {872da645-4a9b-1727-bee2-5585105b9eed} Check interfaces on the new PC: [simterm] $ ip a s 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue… Read More »

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Prometheus: RTFM blog monitoring set up with Ansible – Grafana, Loki, and promtail
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10 March 2019

After implementing the Loki system on my job’s project – I decided to add it for myself, so see my RTFM blog server’s logs. Also – want to add the node_exporter and alertmanager, to be notified about high disk usage. In this post, I’ll describe the Prometheus, node_exporter, Grafana, Loki, and promtail set up process… Read More »

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