apt-get install php-pear
E: Unable to locate package pecl
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ubuntu php 7.3
LC_ALL=C.UTF-8 add-apt-repository ppa:ondrej/php
apt update
apt install php7.3 php7.3-cli php7.3-common
php -v
PHP 7.3.20-1+ubuntu16.04.1+deb.sury.org+1 (cli) (built: Jul 9 2020 16:33:48) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.3.20, Copyright (c) 1998-2018 Zend Technologies
with Zend OPcache v7.3.20-1+ubuntu16.04.1+deb.sury.org+1, Copyright (c) 1999-2018, by Zend Technologies
W: GPG error: http://ppa.launchpad.net/ondrej/php/ubuntu xenial InRelease: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY
apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E5267A6C
E: Unable to locate package add-apt-repository
apt-get install software-properties-common
varnish 6.4 ubuntu
vim /etc/apache2/ports.conf
Listen 127.0.0.1:8080
vim /etc/apache2/sites-available/000-default.conf
systemctl restart apache2.service
apt-get install make automake autotools-dev libedit-dev libjemalloc-dev libncurses-dev libpcre3-dev libtool pkg-config python-docutils python-sphinx graphviz autoconf-archive curl git
git clone https://github.com/varnishcache/varnish-cache
sh autogen.sh && sh configure && make
ldconfig
varnishd -a :80 -T localhost:6082 -b localhost:8080
curl -I http://127.0.0.1
HTTP/1.1 200 OK
Date: Tue, 28 Jul 2020 16:52:48 GMT
Server: Apache/2.4.18 (Ubuntu)
Last-Modified: Sun, 27 Nov 2016 03:03:10 GMT
Vary: Accept-Encoding
Content-Type: text/html
X-Varnish: 32801
Age: 0
Via: 1.1 varnish (Varnish/6.4)
ETag: W/"2c39-5423f985a9780-gzip"
Accept-Ranges: bytes
Connection: keep-alive
varnishtop: error while loading shared libraries: libvarnishapi.so.2: cannot open shared object file: No such file or directory
ldconfig
‘utf-8’ codec can’t decode byte 0xb0 in position 0: invalid start byte
sudo virsh pool-destroy $USER
veth with kernel namespaces
ip netns add netns0
ip netns list
netns0
ip netns exec netns0 ip link set lo up
ip link add veth-default type veth peer name veth-netns0
ip link set veth-netns0 netns netns0
ip a | grep veth
6: veth-default@if5:
link/ether 56:78:d4:a5:8f:55 brd ff:ff:ff:ff:ff:ff link-netns netns0
ip addr add 10.0.3.1/24 dev veth-default
ip link set veth-default up
ip a | grep veth
6: veth-default@if5:
link/ether 56:78:d4:a5:8f:55 brd ff:ff:ff:ff:ff:ff link-netns netns0
inet 10.0.3.1/24 scope global veth-default
valid_lft forever preferred_lft forever
ip netns exec netns0 ip link set veth-netns0 up
ip netns exec netns0 ip addr add 10.0.3.2/24 dev veth-netns0
ping 10.0.3.2
PING 10.0.3.2 (10.0.3.2) 56(84) bytes of data.
64 bytes from 10.0.3.2: icmp_seq=1 ttl=64 time=0.102 ms
64 bytes from 10.0.3.2: icmp_seq=2 ttl=64 time=0.062 ms
64 bytes from 10.0.3.2: icmp_seq=3 ttl=64 time=0.062 ms
^C
--- 10.0.3.2 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2082ms
echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -A FORWARD -o eno0 -i veth-default -j ACCEPT
iptables -A FORWARD -i eno0 -o veth-default -j ACCEPT
iptables -t nat -A POSTROUTING -s 10.0.3.2/24 -o eno0 -j MASQUERADE
ip netns exec netns0 route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.0.3.0 0.0.0.0 255.255.255.0 U 0 0 0 veth-netns0
ip netns exec netns0 ip route add default via 10.0.3.1
ip netns exec netns0 ping srv24x7.com
PING srv24x7.com (93.115.28.151) 56(84) bytes of data.
64 bytes from pagirnis.cloudlix.com (93.115.28.151): icmp_seq=1 ttl=58 time=1.19 ms
64 bytes from pagirnis.cloudlix.com (93.115.28.151): icmp_seq=2 ttl=58 time=1.47 ms
64 bytes from pagirnis.cloudlix.com (93.115.28.151): icmp_seq=3 ttl=58 time=1.65 ms
^C
--- srv24x7.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 1.190/1.437/1.649/0.189 ms
ip netns list
netns0 (id: 0)
openssl s_client check date
echo | openssl s_client -connect smtp.office365.com:587 -starttls smtp 2>/dev/null | openssl x509 -noout -dates
notBefore=May 22 07:01:10 2020 GMT
notAfter=Aug 20 07:01:10 2020 GMT
nmap on openvz host seems down
Note: Host seems down. If it is really up, but blocking our ping probes, try -Pn
Nmap done: 1 IP address (0 hosts up) scanned in 0.60 seconds
Raw packets sent: 2 (56B) | Rcvd: 0 (0B)
nmap --unprivileged -e venet0 -sV -v -v -T4 www.srv24x7.com
*WARNING* Binary location for [CHATTR] [/usr/bin/chattr] in /etc/csf/csf.conf is either incorrect, is not installed or is not executable
*WARNING* Binary location for [CHATTR] [/usr/bin/chattr] in /etc/csf/csf.conf is either incorrect, is not installed or is not executable
*WARNING* Missing or incorrect binary locations will break csf and lfd functionality
yum install e2fsprogs
csf -r
Error: Package: lsphp73-imap-7.3.20-1.el7.x86_64 (litespeed) Requires: libc-client.so.2007()(64bit)
yum install epel-release
yum install openlitespeed
Installing : libmcrypt-2.5.8-13.el7.x86_64 23/27
Installing : lsphp73-pecl-mcrypt-1.0.3-1.el7.7.3.x86_64
borg backup
borg init -e repokey /path/to/repo
borg create /path/to/repo::Day1 ~/public_html
borg create -v --stats /path/to/repo::Day2 ~/public_html
performance-critical code (chunking, compression, encryption) is implemented in C/Cython
local caching of files/chunks index data
quick detection of unmodified files
lz4 (super fast, low compression)
zstd (wide range from high speed and low compression to high compression and lower speed)
zlib (medium speed and compression)
lzma (low speed, high compression)
postfix remove received header
vi /etc/postfix/header_checks
/^Received:.*with ESMTPSA/ IGNORE
/^Received:/ IGNORE
/^X-Originating-IP:/ IGNORE
/^X-Mailer:/ IGNORE
/^Mime-Version:/ IGNORE
vi /etc/postfix/main.cf
mime_header_checks = regexp:/etc/postfix/header_checks
header_checks = regexp:/etc/postfix/header_checks
postmap /etc/postfix/header_checks
postfix reload
cloudflare style SNI proxy
git clone https://github.com/dlundquist/sniproxy.git
yum groupinstall "Development Tools"
yum install autoconf automake curl gettext-devel libev-devel pcre-devel perl pkgconfig rpm-build udns-devel
cd sniproxy
./autogen.sh && ./configure && make dist
rpmbuild --define "_sourcedir `pwd`" -ba redhat/sniproxy.spec
yum install /root/rpmbuild/RPMS/x86_64/sniproxy-0.6.0+git.10.g822bb80-1.el7.x86_64.rpm
sniproxy -c /etc/sniproxy.conf
Centos 7 x86_64:
sniproxy-0.6.0+git.10.g822bb80-1.el7.x86_64.rpm.gz