The most common cause of crashes in MySQL is that it stopped or failed to start due to insufficient memory. To check this, you will need to review the MySQL error log after a crash. First, attempt to start the MySQL server by typing: sudo systemctl start mysql Then…
Grafana is the leading graph and dashboard builder for visualizing time series infrastructure and application metrics, but many use it in other domains including industrial sensors, home automation, weather, and process control. It provides a powerful and elegant way to create, explore, and share dashboards and data with your team and the world. In this tutorial, you will learn how to add Prometheus as a data source to your Grafana instance and install a pre-configured Prometheus Dashboard.
🟠 High ⏱ 5–30 min Last verified: 26 June 2019 Affected versions: 14.04 14.04.6 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]
🟢 Low ⏱ 5–15 min Last verified: 26 June 2019 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read • Source: Ubuntu Security Notice USN-4000-1 Related CVEs: CVE-2018-1084 Upstream summary: It was discovered that Corosync incorrectly handled certain requests. An attacker could possibly use this issue to cause a denial of service or execute […]
NFS, or Network File System, is a distributed file system protocol that allows you to mount remote directories on your server. This allows you to leverage storage space in a different location and to write to the same space from multiple servers. NFS works well for directories…
The LEMP software stack is a group of software that can be used to serve dynamic web pages and web applications. This is an acronym that describes a Linux operating system, with an Nginx web server. The backend data is stored in the MySQL database and the dynamic processing…
Redis is an open-source key-value data store, using an in-memory storage model with optional disk writes for persistence. It features transactions, a pub/sub messaging pattern, and automatic failover among other functionality. Redis has clients written in most languages with…
🟡 Medium ⏱ 5–30 min Last verified: 24 June 2019 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]
VNC will allow you to connect to your server remotely, as well as be able to use your keyboard, mouse, and monitor to interface with that server. Get it setup on your Ubuntu 12 cloud server.
tmux takes advantage of a client-server model, which allows you to attach terminals to a tmux session. Get it installed on your Ubuntu cloud server and begin using it with this tutorial.
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