Yet Another Sysadmin NOte - Linux

You can read in this article: https://medium.com/@devfire/how-to-become-a-devops-engineer-in-six-months-or-less-366097df7737

ZKUI is an open source (under Apache 2.0 license ) a UI dashboard that allows CRUD operations on Zookeeper. But sometimes you can want to upload something to the Zookeeper via ZKUI automatically. And as far as I could understand ZKUI don't have API for this purpose, but you can always use cUrl . First of all, you need to authenticate in the ZKUI using LDAP login/password: curl -c COOKIE --data "username=USERNAME&password=PASSWORD&action= 'Sign In' " https: //ZKUI_ADDRESS/login After that, you can use the COOKIE file to communicate with ZKUI. Use the next commands: To export all data to a file: curl -c COOKIE -b COOKIE -s -S "https: //ZKUI_ADDRESS/export?zkPath=/" > FILE To import data from a file: curl -c COOKIE -b COOKIE -s -S --form scmFile=@FILE --form Import=submit https: //ZKUI_ADDRESS/ import Please note: you can set "--form scmOverwrite=true" if you want to overwrite existing properties. ...

In this article, I tried to collect all my experience and add links which I used to set up authentication in Zookeeper. First of all, you need to run Zookeeper (ZK) with the password for "super" user. We need to use DigestAuthenticationProvider for this. Need to generate digest of a given password and after that, you can run Zookeeper with option -DSERVER_JVMFLAGS=-Dzookeeper.DigestAuthenticationProvider.superDigest=super:<password digest> How to generate digest of a given password. For generating  digest you need to do next: /bin/java -cp "/opt/zookeeper-3.4.9.jar /opt/lib/slf4j-api-1.6.1.jar" org.apache.zookeeper.server.auth.DigestAuthenticationProvider super:pass (by link , you can find a slightly different way). The output will be: super:CiymZRNkXx0HJFQhdpGmqJqKuHM= Please note: this is example and digest may not match the password. After that, you need to set SERVER_JVMFLAGS and restart Zookeeper: export SERVER_JVMFLAGS="-Dzookeeper....

It has been reported that at least MacOS High Sierra has a default root account with no password.  You can check it for yourself by going to System Preferences > Users & Groups > Click the lock to make changes. Then use "root" with no password and try it for several times. I think, currently, we cannot be 100 % sure that this issue does not apply to other MacOS versions.

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Yes, you can to upload not only text to the Consul KV store! The first step is encoding your artifact to the base64, and second - upload it. But as you probably know - you can put up to 512kb to the Consul KV store, and encoding artifacts to the base64 growing up the size of artifacts something about 30%. And you know, of course,  - Consul store all data in the KV in the memory , so do not neglect this feature. You can encode and put artifact using command something like this: base64 terraform.tgz | consul kv put -token=$CONSUL_HTTP_TOKEN terraform/us-central1/tool/config -