Posted on March 5, 2020
(Last modified on August 19, 2026)
• Other languages:
日本語
Downloading and installing the Zabbix Agent From the Zabbix official site, go to Download Zabbix agents (in Japanese), specify macOS and the zabbix version, and download it
Open the pkg file you downloaded and install it
By the way, it is set up so that it runs automatically when MacOS starts
Copy # file location /Library/LaunchDaemons/com.zabbix.zabbix_agentd.plist # startup script /usr/local/sbin/zabbix_agentd -c /usr/local/etc/zabbix/zabbix_agentd.conf -f # log /var/log/zabbix/zabbix_agentd-out.log /var/log/zabbix/zabbix_agentd-err.log Configuration Change Hostname as appropriate, and change the Server field to the IP of the Zabbix Server
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Posted on March 3, 2020
(Last modified on August 19, 2026)
• Other languages:
日本語
When I bought a PowerEdge R630 I did not actually need RAID, but an S140 came with it by default, so I figured I might as well build the server in a RAID configuration — and got stuck.
The server build plan Since there are 4 HDDs, I considered installing Debian Linux or VMware ESXi on RAID5
Boot failure from the rear USB port There is no CD/DVD drive included and no PXE boot environment either, so I created a boot disk on USB, plugged it into a rear USB port and powered the machine on, at which point it froze at “Initilize Firmware Interfaces” and did not go any further.
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Posted on February 12, 2020
(Last modified on August 19, 2026)
• Other languages:
日本語
When WordPress will not upload images, the following points are often raised
The destination for the images is not writable You are going over the image size limit set in php.ini An image compression plugin is involved There is simply not enough disk space CPU load has hit 100% Uploads stopped working from 2019? In particular, the symptom of an error occurring kept happening even though I had not changed php.ini or any plugin.
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Posted on January 28, 2020
(Last modified on August 19, 2026)
• Other languages:
日本語
When I installed the latest version of Hugo on CentOS7, it would no longer start because of the error below
./hugo version
./hugo: /lib64/libstdc++.so.6: version GLIBCXX_3.4.20' not found (required by ./hugo) ./hugo: /lib64/libstdc++.so.6: version GLIBCXX_3.4.21’ not found (required by ./hugo)
Checking the GCC version Copy # strings /usr/lib64/libstdc++.so.6 | grep GLIBCXX GLIBCXX_3.4 GLIBCXX_3.4.1 GLIBCXX_3.4.2 GLIBCXX_3.4.3 GLIBCXX_3.4.4 GLIBCXX_3.4.5 GLIBCXX_3.4.6 GLIBCXX_3.4.7 GLIBCXX_3.4.8 GLIBCXX_3.4.9 GLIBCXX_3.4.10 GLIBCXX_3.4.11 GLIBCXX_3.4.12 GLIBCXX_3.4.13 GLIBCXX_3.4.14 GLIBCXX_3.4.15 GLIBCXX_3.4.16 GLIBCXX_3.4.17 GLIBCXX_3.4.18 GLIBCXX_3.4.19 It looks like the GCC version on CentOS is still old
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Posted on January 28, 2020
(Last modified on August 19, 2026)
• Other languages:
日本語
The beautifulhugo theme this site uses was pinned to a particular branch and was not being updated to the latest version, so these are my notes on switching it to master
There had been updates on the official site and yet the theme inside the submodule was not updating; I wondered why, and it turned out to be because it was on a specific branch. (I thought I had set it to master when I first installed it…?)
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Posted on January 24, 2020
(Last modified on August 19, 2026)
• Other languages:
日本語
Environment where the problem happens Model: TS-269 Pro
Old firmware: 4.3.4.1029
New firmware: 4.3.4.2351
File sharing from Windows10 and sharing over Mac SMB could no longer connect as guest.
Guest login worked on the old firmware, but after the new firmware guest login stopped working
Checking the settings In Control Panel → Privilege settings, under “Edit Shared Folder Permission”, I confirmed that the files (folders) that should allow guest login have read/write checked for everyone In Control Panel → Network & File Services, under “Microsoft Networking”, I confirmed that “Enable file service for Microsoft networking” is checked I unchecked “Enable file service for Microsoft networking” and pressed the Apply button, then checked it again and pressed the Apply button (restarting the file sharing service) Even after all of these checks, guest login does not work
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Posted on November 21, 2019
(Last modified on August 19, 2026)
• Other languages:
日本語
When I tried to run a certain theme with Hugo on MacOS Sierra, the error below appeared and it would not start
Error: listen tcp 127.0.0.1:1313: socket: too many open files
Looking into it, it turned out that the ulimit on the Mac needs to be changed, and I solved it by referring to macOS Sierraでulimitを変更する方法 - Carpe Diem
(in Japanese).
$ ulimit -a
Maximum size of core files created (kB, -c)0Maximum size of a process’s data segment (kB, -d) unlimited
Maximum size of files created by the shell (kB, -f) unlimited
Maximum size that may be locked into memory (kB, -l) unlimited
Maximum resident set size (kB, -m) unlimited
Maximum number of open file descriptors (-n)524288Maximum stack size (kB, -s)8192Maximum amount of cpu time in seconds (seconds, -t) unlimited
Maximum number of processes available to a single user (-u)2048Maximum amount of virtual memory available to the shell (kB, -v) unlimited
Posted on October 24, 2019
(Last modified on August 19, 2026)
• Other languages:
日本語
Notes on updating from MWEB 3.2.8 or earlier to 3.3.x MWEB is easy to use as a MarkDown editor on the Mac, but when you upgrade from a version older than 3.2.8 to 3.3 or later, a little bit of work is required.
If your version is older than 3.2.8, simply updating the app to the latest version will not work
On the official MWEB site there is a note about this, “MWeb version 3.2.8 and bellow update to version 3.3.1 notice - MWeb ”
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Posted on October 24, 2019
(Last modified on August 19, 2026)
• Other languages:
日本語
Kitematic on the Mac I use started erroring out when pulling Docker images and stopped working properly I suspect the symptom started after I upgraded Docker some time ago and bumped Kitematic’s version along with it.
Environment and symptoms Here I write out the environment I am running and the details of the problem
Environment Symptoms This error appears just as the image download from Docker Hub is about to finish.
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Posted on September 3, 2019
(Last modified on August 19, 2026)
• Other languages:
日本語
On VMware ESXi, I tried to back up a guest OS inside the ESXi server to OVF from a client.
VMware OVF Toolを利用してESXi 6.7からVMをエクスポート - redj’s blog (in Japanese) I used that detailed article as a reference. (Thanks)
When I stopped the guest OS and tried the backup, an error occurred
Copy # ofvtool vi://[username]:[password]@[ESXi IP or FQDN]/[inventory name] [output OVF name].ovf Error: Fault cause: vim.fault.InvalidState
With backups on the older Vsphere you had to switch to maintenance mode, and the cause was that I had done exactly that.
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