Sakuragawa Asaba - # journalctl -xeu "Sakuragawa" (Page 3)

Bare Metal Installation of GlusterFS and Heketi

GlusterFS is a popular solution for distributed storage. To provide persistent storage for Kubenetes cluster from GlusterFS cluster, Heketi is spreadly used as an API.

Sakuragawa Asaba

15 Nov 2018 · 2 min read

Hands-on Rancher Container Cloud

Days before, I migrated docker-compose services to Rancher container cloud. I will demostrate how I deploy Gitea, a popular self-hosted coding hosting software, with full Web UI and native-like SSH functionality.

Sakuragawa Asaba

5 Sep 2018 · 3 min read

From OpenShift 3.7 to OKD 3.10: A Painful Upgrade

One of our internal production is running an OpenShift 3.7 cluster. As OKD 3.10 is rolling out, 3.7 is far too old and missing some useful new features. "Let's get it upgraded!" I shouted out, and nightmares started too to pour out. How did I break it? How should I fix it?

Sakuragawa Asaba

28 Aug 2018 · 5 min read

Use Docker Volumes with Local Filesystem Path and NFS

In docker containers, volumes could be mounted as a file or a path. Docker volumes could be even shared among containers, and provides same experience upon different backends.

Sakuragawa Asaba

15 Aug 2018 · 1 min read

Deploy Granafa with Prometheus and OAuth2 on OpenShift

Grafana has an official docker image. Though permission problems occurred in previous versions, it can running flawlessly. There is also an example in OKD. We will start with the examples, but also do further configuration with data sources and dashboards.

Sakuragawa Asaba

13 Aug 2018 · 4 min read

Linux

Linux Kernel Option: rp_filter

By default, Fedora server enables strict reverse path validation. It is indeed very safe but will also become a rabbit hole for those who are not very familiar with this feature.

Sakuragawa Asaba

19 Jul 2018 · 1 min read

Quick Reference Handbook: Setting Up Fedora Workstation Installation

Fedora Workstation is a up-to-date and easy-to-use GNU/Linux distribution. After installing Fedora Workstation 28, some tweaking work could be done to make the system more comfortable.

Sakuragawa Asaba

2 Jul 2018 · 2 min read

Gitea in Docker Container and Sharing SSH with Host

Gitea is an open-source GitHub clone. Gitea is developed with Golang and is much lighter than GitLab while providing most useful functions. It also has a similary user experience as GitHub does. Since Microsoft is acquiring GitHub, Gitea is a good choice for self-hosting lightweight solution.

Sakuragawa Asaba

12 Jun 2018 · 2 min read

Groovy Notes

String in Groovy In Groovy there are 6 types of strings. The differences among them are as below table. TypeGrammaVariable TranslationMultiple LineEscapeSingle Quoted'...'NoNo\Triple Quoted'''...'''NoYes\Double Quotation Mark"

Sakuragawa Asaba

3 Apr 2018 · 1 min read

Using IPMI Behind a Router or Proxy

IPMI is useful for administration, but is not that usable from outside a gateway. Yet we could map out the ports for connecting to IPMI.[1] PortProtocolUsage623UDPIPMI Commandline Tool5900TCPVNC Control5901TCPVNC

Sakuragawa Asaba

29 Mar 2018 · 1 min read

Setting Up Nextcloud 13 and Collabora Online for Private Online Office Platform with Docker

Nextcloud is a popular open-source online file storage solution, and Collabora Online, a LibreOffice-based online office suite, adds more along with NextCloud. The combination of the two is a powerful

Sakuragawa Asaba

16 Mar 2018 · 3 min read

Soft Router for Home Lab: Hardware, Topology and Software Choices

Why Soft Router There are a great many of choices for family users to buy a router, or family gateway. Most family gateways integrates router, switch and access point functions

Sakuragawa Asaba

19 Dec 2017 · 2 min read

Hands on OpenShift Origin

OpenShift is an even-more-popular container cloud. It could be hosted by redhat.com via openshift.com or it can be self-hosted. I'm playing with OpenShift under Fedora 27 Cloud, on

Sakuragawa Asaba

30 Nov 2017 · 2 min read

Setting Up Secured Work-spaces with YubiKey 4

I recently switched to Fedora 26 (due to working environment) and I would like to use YubiKey to maximize security and re-use existing credentials.

Sakuragawa Asaba

14 Nov 2017 · 2 min read

Getting CentOS Cloud Images to Single User Mode

I recently corrupted a CentOS hosted on OpenStack by adding an incorrect line in /etc/fstab, and CentOS prompts to me enter root password after a reboot. However in a

Sakuragawa Asaba

6 Nov 2017 · 1 min read

Old Talks: Bad Wireless Performance on LEDE/OpenWRT

My Mercury MW4530R wireless router was used as an AP under original firmware, and its 2.4GHz is getting less and worse stable. So I switch back to LEDE. As

Sakuragawa Asaba

11 Oct 2017 · 2 min read

Building Android (Resurrection Remix) Nougat From Source For Sony Xperia Z3

Resurrection Remix is always one of my favorite Android variants. It did have official builds for Xperia Z3 (D6603/D6653) but not availabe any more. Since its device are free

Sakuragawa Asaba

6 Sep 2017 · 3 min read

The Best Design is Others' Design

There're always some classic design that will appear on products. However, when those design combinations are highly alike, products become identical and some of them are absolutely doing plagiarism. This

Sakuragawa Asaba

28 Aug 2017 · 2 min read