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Linux

Prefer/Precedence IPv4 over IPv6 for DNS lookups

We had an issue with DNS lookup/Querying the whois servers(Example: whois.crsnic.net) while Domain Search/Registration for any TLDs through WHMCS, Domain Manager etc. The tool/system used to timeout whenever the users searched a domain for availability. We found the following via CLI when telnet’ing to the whois server directly. The above indicates it attempts IPv6 DNS […]

Liblua error: relocation R_X86_64_32 against `luaO_nilobject_’

The full error will be like as below: ———————— /usr/bin/ld: /usr/local/lib/liblua.a(lapi.o): relocation R_X86_64_32 against `luaO_nilobject_’ can not be used when making a shared object; recompile with -fPIC /usr/local/lib/liblua.a: could not read symbols: Bad value ———————— I got the above error in between easyapache. It’s pretty sure lua is present in server but something went unoticed […]

Error while loading shared libraries: liblua.so

I got this liblua error while apache,php recompilation. At first I tried to find the dependencies of lua # ldd `which lua` linux-vdso.so.1 => (0x00007fff1dd7d000) liblua.so => not found libreadline.so.6 => /lib64/libreadline.so.6 (0x0000003b68800000) libncurses.so.5 => /lib64/libncurses.so.5 (0x0000003b68400000) libm.so.6 => /lib64/libm.so.6 (0x0000003b68000000) libdl.so.2 => /lib64/libdl.so.2 (0x0000003b67800000) libc.so.6 => /lib64/libc.so.6 (0x0000003b67400000) libtinfo.so.5 => /lib64/libtinfo.so.5 (0x0000003b6a400000) /lib64/ld-linux-x86-64.so.2 (0x0000003b67000000) […]

OpenVZ vps creation “Error in check_mount_restrictions (ploop.c:1627)”

I wasn’t able to create new vps in node due to following ploop error. From the log ————————— Creating image: /vz/private/350.tmp/root.hdd/root.hdd size=2306867K Creating delta /vz/private/350.tmp/root.hdd/root.hdd bs=2048 size=4614144 sectors v2 Storing /vz/private/350.tmp/root.hdd/DiskDescriptor.xml Error in check_mount_restrictions (ploop.c:1627): The ploop image can not be used on ext3 or ext4 file system without extents Failed to create image: Error […]

How to change username when you have only one account in Ubuntu?

You cannot simply login as root in Ubuntu at the start up. Do it as the following way: 1) Open terminal and switch to root user. You can open terminal in search or by pressing Ctl+Alt+t. 2) Unlock root account and enable login as root like below # passwd -u root (:::should be as root) […]

Where can you find the HOST_API_KEY of CloudFlare in server?

Suppose you have lot of servers and a new server setup is going on, and you want to install CloudFlare in it. While installation it asks for HOST_API_KEY. You can find the key on other servers from following file location. /root/.cpanel/datastore/cf_api It contains the key 🙂

Wowza Streaming Engine (RHEL/Centos/Fedora)

Wowza Streaming Engine (known as Wowza Media Server prior to version 4) is unified server software developed by Wowza Media Systems. The server is used for streaming of live and on-demand video, audio, and RIAs (rich Internet applications) over IP networks to desktop, laptop, and tablet computers, mobile devices, IPTV set-top boxes, internet-connected TV sets, […]

Red5 Media Server: Installation And Configuration (Centos/Fedora/RHEL)

Red5 Media Server delivers a powerful video streaming and multi-user solution to the ©Adobe ©Flash Player and other exciting client technologies. It works based on Java and some of the most powerful open source frameworks, Red5 stands as a solid solution for business of all sizes including the enterprise. Features ———— Streaming Video (FLV, F4V, […]

Install FFMPEG in Fedora/Centos/RHEL

Introduction ———— FFmpeg is a free software project that produces libraries and programs for handling multimedia data. FFmpeg is the leading multimedia framework, able to decode, encode, transcode, mux, demux, stream, filter and play pretty much anything that humans and machines have created. It supports the most obscure ancient formats up to the cutting edge. […]