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latuminggi
/ Add a Disk to Expand Storage of Existing LVM
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November 20, 2024 03:59
Add a Disk to Expand Storage of Existing LVM
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| ### This walkthrough has been tested on Ubuntu Linux 22.04 LTS for xfs filesystem | |
| ### Reference: https://www.cyberciti.biz/faq/howto-add-disk-to-lvm-volume-on-linux-to-increase-size-of-pool | |
| # df -h | grep -v tmpfs | |
| Filesystem Size Used Avail Use% Mounted on | |
| /dev/mapper/VG_SERVER-LV_ROOT 45G 7.9G 38G 18% / | |
| /dev/sda2 974M 374M 533M 42% /boot | |
| # lvs | |
| LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert |
latuminggi
/ Informative Linux Terminal with Horizontal Separator
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November 4, 2023 03:51
Informative Linux Terminal with Horizontal Separator
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| ### This bash script below has been tested on Oracle Linux 8 | |
| ### Put these 3 lines in the bottom file of your ~/.bashrc | |
| export SERVER_NAME="[MyServerName] " | |
| export PS0='\[\e[1;33m\]└─ exec @ \D{%F %T%z} $(eval printf %.0s─ '{36..'"${COLUMNS:-$(tput cols)}"\}; echo)\[\e[m\]\n' | |
| export PS1="\n\[\e[1;33m\]┌$(eval printf %.0s─ '{2..'"${COLUMNS:-$(tput cols)}"\}; echo)\n├─ \h ($(eval hostname -I|cut -f1 -d' ')) ${SERVER_NAME}@ \w\n├─ \[\e[1;36m\]\u \\$\[\e[m\] " | |
| ### Adjust env SERVER_NAME, save and execute command below | |
| $ source ~/.bashrc |
latuminggi
/ GMapsDECtoDMS.php
Last active
February 10, 2022 13:45
Convert Decimal degrees (DEC) to Degrees, minutes, and seconds (DMS) for Google Maps (bonus Embed URL)
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| function GMapsDECtoDMS($latitude, $longitude) { | |
| // $latitude and $longitude must be a float value | |
| // e.g. National Monument (-6.175413294875829, 106.82718181252345) | |
| $latitudeDirection = $latitude < 0 ? 'S': 'N'; | |
| $longitudeDirection = $longitude < 0 ? 'W': 'E'; | |
| $latitudeNotation = $latitude < 0 ? '': ''; | |
| $longitudeNotation = $longitude < 0 ? '': ''; |
latuminggi
/ nginx http upstream with fallback
Last active
September 3, 2021 09:01
nginx http upstream with fallback if upstream return http error page
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| ### nginx http upstream with fallback if upstream return http error page ### | |
| ### https://www.digitalocean.com/community/tools/nginx | |
| # upstream members of soa | |
| upstream soa { | |
| server 11.22.33.41:1234 max_fails=1 fail_timeout=1m; | |
| server 11.22.33.42:1234 max_fails=1 fail_timeout=1m; | |
| server 11.22.33.43:1234 max_fails=1 fail_timeout=1m backup; | |
| server 11.22.33.44:1234 max_fails=1 fail_timeout=1m backup; | |
| } |
latuminggi
/ Disable weak SSH ciphers in Linux
Last active
April 16, 2025 13:37
Disable weak SSH ciphers in Linux
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| ### Disable weak SSH ciphers in Linux ### | |
| # check ssh ciphers, macs, and kexalgorithms | |
| sshd -T | grep "\(ciphers\|macs\|kexalgorithms\)" | |
| # edit sshd_config | |
| nano /etc/ssh/sshd_config | |
| # add following conf lines into most bottom of sshd_config file | |
| Ciphers [email protected],[email protected],aes256-ctr,aes128-ctr |
latuminggi
/ Disable ICMP Timestamp Response Ubuntu LTS
Created
July 27, 2021 09:54
Disable ICMP Timestamp Response Ubuntu LTS
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| ### Disable ICMP Timestamp Response Ubuntu LTS ### | |
| # sysctl disable tcp_timestamps | |
| echo 0 > /proc/sys/net/ipv4/tcp_timestamps && \ | |
| echo "net.ipv4.tcp_timestamps = 0" > /etc/sysctl.d/tcp_timestamps.conf && \ | |
| sysctl -p && \ | |
| sysctl -a | grep "net\.ipv4\.tcp_timestamps" | |
| # open icmp to specified segment | |
| iptables -A INPUT -s 10.10.0.0/16 -p icmp -m icmp --icmp-type 8 -j ACCEPT |
latuminggi
/ Updating glibc, libstdc++, and gcc on RHEL (CentOS) 6
Last active
July 21, 2021 07:08
Updating glibc, libstdc++, and gcc on RHEL / CentOS 6
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| ### Updating glibc, libstdc++, and gcc on RHEL / CentOS 6 ### | |
| # https://code.visualstudio.com/docs/remote/linux#_updating-glibc-and-libstdc-on-rhel-centos-6 | |
| # https://serverkurma.com/linux/how-to-update-glibc-newer-version-on-centos-6-x/ | |
| # https://gist.github.com/harv/f86690fcad94f655906ee9e37c85b174 | |
| # https://copr.fedorainfracloud.org/coprs/mosquito/myrepo-el6/ | |
| # WARNING !!! | |
| # Do not run this script on anything mission critical without a rollback strategy | |
| # since it does update libraries that other applications depend on. |
latuminggi
/ COMPILE NGINX 1.20.1 RHEL (CentOS?) 6
Last active
July 23, 2021 14:34
COMPILE NGINX 1.20.1 RHEL/(CentOS?) 6
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| ### COMPILE NGINX 1.20.1 RHEL/(CentOS?) 6 ### | |
| # installing dependencies | |
| yum install git yum-utils gcc gcc-c++ pcre-devel zlib-devel make unzip libuuid-devel \ | |
| openssl-devel libxml2-devel libxslt-devel libgcrypt-devel libgpg-error-devel \ | |
| pcre pcre-devel geoip-devel cpp gd-devel | |
| # install glibc | |
| wget https://copr-be.cloud.fedoraproject.org/results/mosquito/myrepo-el6/epel-6-x86_64/glibc-2.17-55.fc20/glibc-common-2.17-55.el6.x86_64.rpm \ | |
| https://copr-be.cloud.fedoraproject.org/results/mosquito/myrepo-el6/epel-6-x86_64/glibc-2.17-55.fc20/glibc-headers-2.17-55.el6.x86_64.rpm \ |
latuminggi
/ COMPILE PHP 8.0 RHEL (CentOS?) 6
Last active
May 29, 2024 16:26
COMPILE PHP 8.0 RHEL/(CentOS?) 6
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| ### COMPILE PHP 8.0 RHEL/(CentOS?) 6 ### | |
| # You can find PHP 8.0 repository here: | |
| # https://pkgs.dyn.su/el6-extras/x86_64 | |
| # installing dependencies | |
| # https://coderwall.com/p/ggmpfa/php-configuration-error-and-solutions-in-rpm | |
| yum install -y autoconf autotools gmp-devel libcurl-devel postgresql postgresql-devel sqlite sqlite-devel \ | |
| libxslt-devel net-snmp-devel readline-devel aspell aspell-devel unixODBC-devel libicu-devel libc-client-devel \ | |
| freetype-devel libXpm-devel libpng-devel libvpx-devel enchant-devel libmcrypt-devel libmemcached-devel \ |
latuminggi
/ Install Let's Encrypt with ACME.sh in Nginx
Last active
August 19, 2021 01:39
Install Let's Encrypt with ACME.sh in Nginx
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| ### Install Let's Encrypt with ACME.sh in Nginx ### | |
| # clone acme (as root) | |
| git clone https://github.com/acmesh-official/acme.sh.git && \ | |
| cd acme.sh && \ | |
| ./acme.sh --install -m [email protected] | |
| # create cert ---------------------------------------------------------------------- | |
| # acme.sh is an alias for /root/.acme.sh/acme.sh |
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