hiage

Ubuntu Prompt System Policy Prevents Modification of Network Settings for All Users

Edit /etc/polkit-1/localauthority/50-local.d/10-network-manager.pkla (the file might not exist)

sudo nano /etc/polkit-1/localauthority/50-local.d/10-network-manager.pkla
[Let all users modify system settings for network]
Identity=unix-user:*
Action=org.freedesktop.NetworkManager.settings.modify.system
ResultAny=no
ResultInactive=no

hiage

#Creating project_service_name_1 ... error
#
#ERROR: for project_service_name_1  Cannot start service service_name: endpoint with name project_service_name_1 already exists in network host
#
#ERROR: for service_name  Cannot start service service_name: endpoint with name project_service_name_1 already exists in network host
#ERROR: Encountered errors while bringing up the project.
 
docker network ls
docker network inspect host
docker network disconnect -f host project_service_name_1 

hiage

how to pull chart locally

helm repo add stable https://kubernetes-charts.storage.googleapis.com/
helm repo update
helm pull stable/chartmuseum --untar # optionally untar

hiage

-bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8)
/bin/sh: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8)
/bin/sh: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8)
/bin/sh: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8)

[root@dev ~]# cat /etc/redhat-release 
CentOS Linux release 8.2.2004 (Core)

hiage

Ulimit settings not being applied with SSH logins
April 14, 2011, 2:05 pm
On a RHEL5 server ulimit setting was not applied when I logged in using SSH. No matter what I did the setting remained the same. Doing a “su – ” to a user, however, worked like a treat. Strange! I did a bit of googling and found the following answer to my problem:

1. In /etc/pam.d/sshd add the line

session    required     pam_limits.so
2. In /etc/pam.d/login add the line

session    required     pam_limits.so

hiage

LInux

Three system configuration parameters must be set to support a large number of open files and TCP connections with large bursts of messages. Changes can be made using the /etc/rc.d/rc.local or /etc/sysctl.conf script to preserve changes after reboot.

1. /proc/sys/fs/file-max: The maximum number of concurrently open files.

fs.file-max = 1000000

2. /proc/sys/net/ipv4/tcp_max_syn_backlog: Maximum number of remembered connection requests, which are still did not receive an acknowledgment from connecting client. The default value is 1024 for systems with more than 128Mb of memory, and 128 for low memory machines.

net.ipv4.tcp_max_syn_backlog = 3240000

3. /proc/sys/net/core/somaxconn: Limit of socket listen() backlog, known in userspace as SOMAXCONN. Defaults to 128.

net.core.somaxconn = 3240000

hiage

org -> gnome -> mutter and uncheck the box " workspaces-only-on-primary"

or if you do not have installed dconf-editor you can use following terminal commands:

gsettings get org.gnome.mutter workspaces-only-on-primary to check the current setting. Probably it is "true".

gsettings set org.gnome.mutter workspaces-only-on-primary false to make the settings. Now workspace should contain all monitors.

hiage

const timer = ms => new Promise(res => setTimeout(res, ms));

setInterval(async () =>
{
      // Get all tweets
      const allTweets = document.querySelectorAll('.css-1dbjc4n.r-18u37iz.r-1wbh5a2.r-13hce6t');

      // Filter tweets 
      const filteredTweets =  Array.prototype.slice.call(allTweets).filter(x => x.innerText === '@username');

hiage

Use this Certificate Decoder to decode your PEM encoded SSL certificate and verify that it contains the correct information. 

#fulldetail
openssl x509 -text -noout -in dxxxx_net_id.pem

#check end date only
openssl x509 -enddate -noout -in dxxxx_net_id.pem
notAfter=Feb 24 23:59:59 2023 GMT

hiage

## OS Ubuntu 17.10

## Pre-Requisites
# apt-get install -y git build-essential libpcre3 libpcre3-dev libssl-dev libtool autoconf apache2-dev libxml2-dev libcurl4-openssl-dev automake pkgconf dialog apt-utils
# apt-get install -y g++ flex bison curl doxygen libyajl-dev libgeoip-dev libtool dh-autoreconf libcurl4-gnutls-dev libxml2 libpcre++-dev libxml2-dev libyajl2 yajl-tools
# apt-get install -y libgd2-xpm-dev libgeoip-dev libpam-dev  libpcre3 libpcre3-dev google-perftools libgoogle-perftools-dev libatomic-ops-dev libperl-dev 
# export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/lib/x86_64-linux-gnu/pkgconfig

## ModSecurity
# cd /usr/src