Red Branch | For Future Reference …
There have been some changes to the NetApp menu and it took me a few minutes to find the location to apply export policies to a volume. It is currently (version 9.1) found under the ‘Junction Paths’ menu tab for the SVM.
I’m just recording some notes here on the steps I took to run a Minecraft (Spigot) server on a CentOS 7 server. Install Pre-requisites
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yum install git python-twisted-core python-psutil python-urwid python-twisted-web screen |
Get Java You could try using OpenJDK with
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[crayon-5ce18c8e04009569842572 ]yum install java-1.8.0-openjdk |
[/crayon] Or visit the Oracle website agree to the license agreement and download the jdk-8u131-linux-x64.rpm file. Copy that file to your server using SCP and… Read more »
Courtesy of Pete in work. To enable hostname auto completion in Bash, do the following: dig pop @dns.server.tld axfr | awk ‘$4 ~ /\yA\y/ && gsub(/.$/,””,$1) {print $1}’ > ~/.hosts If you would prefer to filter out hosts e.g. dev and swi, change awk to: awk ‘$4 ~ /\yA\y/ && ! /dev/ && ! /swi/… Read more »
The default user and password combination for a Dell iDRAC interface is root / calvin It can be manually reset when logging in to the web interface but when doing many machines at once and many actions at the same time the racadm tool is handy. To change the password use: racadm -r 192.168.1.23 -u… Read more »
Install the prerequisites. Below works for Debian-based distros such as Ubuntu/Mint:
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apt-get install libzookeeper-mt-dev |
Install python libraries:
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pip install zkpython pykeeper |
Example code below shows making a connection, getting the names of some child nodes and pulling info from each of those child nodes:
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import pykeeper import json client = pykeeper.ZooKeeper('192.168.1.2:2181') client.connect() coords = client.get_children('/druid/coordinator/_COORDINATOR') list_of_coord_addresses = [] for coord in coords: zk_coord = client.get('/druid/coordinator/_COORDINATOR/%s' % coord ) list_of_coord_addresses.append(zk_coord[0]) print(list_of_coord_addresses) |
Unfortunately I can’t get this installed on CentOS.
Ubuntu 18.04 includes check-mk in the repository version but it is an older version 1.2.8 (at the time of writing). Download check mk raw (get the latest stable URL from the website) :
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wget https://mathias-kettner.de/support/1.5.0p7/check-mk-raw-1.5.0p7_0.bionic_amd64.deb |
Try installing it:
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dpkg -i dpkg -i check-mk-raw-*.deb |
You may get dependency issues which can be resolved with:
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apt-get install -f |
Then try the install again:
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dpkg -i check-mk-raw-*.deb |
In the update from iDRAC 8 to iDRAC 9 it has been infuriating searching the ‘Storage’ menu only to discover that the storage is managed under ‘Configuration > Storage Configuration’ I’m convinced the user experience could be better! At the very least a link through for configuration.
Journald logs can be cleared by timescale or size as follows. Keep only 5 days worth of logs journalctl –vacuum-time=5d Retain only the past 500 MB: journalctl –vacuum-size=500M
The puppet agent can be disabled from running with:
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puppet disable "Some message here" |
And it can be re-enabled with:
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puppet enable |
But to check if puppet is currently disabled there is no check command. Instead look for the existence of the agent_disabled.lock file under:
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$vardir/state/agent_disabled.lock |
For the systems I was checking this was at:
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/opt/puppetlabs/puppet/cache/state/agent_disabled.lock |
I sometimes want to omit directories from my disk usage (du -sh *) checks. This includes virtual files systems such as proc / dev and also mounts to other filesystems (data in the example below). This is what works for me:
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du --exclude={proc,sys,dev,data} -sh * |
The equals sign appears to be optional and worked both ways for me…. Read more »
