Wednesday, April 13, 2016

How to install Bitcoin Classic Full Node on Amazon Linux EC2 (also valid for RHEL and CentOS)


bitcoin-classic


These are installation instructions (with compilation) for Bitcoin Classic (Full Node) under Amazon Linux 2016.03.0
They should also work on Red Hat RHEL and CentOS.


- Make sure your box is up to date:

       __|  __|_  )
       _|  (     /   Amazon Linux AMI
      ___|\___|___|

https://aws.amazon.com/amazon-linux-ami/2016.03-release-notes/

sudo yum update



- Install all this:

(This command is a single line)

sudo yum install git boost boost-devel autoconf automake gcc-c++ libtool openssl openssl-devel libevent libevent-devel



- Add PUIAS repository (needed for Berkeley DB when compiling the Bitcoin Wallet):

* Create this file:

sudo vim /etc/yum.repos.d/puias-computational.repo


* And add this content to it and save:
[puias-computational]
name=PUIAS Computational
baseurl=http://puias.math.ias.edu/data/puias/computational/6/x86_64/
enabled=1
gpgcheck=0


- Install DB48


sudo yum install db48 db48-devel



- Download Bitcoin Classic latest version from GitHub:


cd /usr/src

sudo git clone -b v0.12.0cl1 https://github.com/bitcoinclassic/bitcoinclassic.git

cd bitcoinclassic/


Note: Using label v0.12.0cl1 to avoid issues with lib-boost-1.55 (a 0.12.1 requisite)


- Configure:


sudo ./autogen.sh

sudo ./configure



Expected output:
$ sudo ./configure
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking whether to enable maintainer-specific portions of Makefiles... yes
checking whether make supports nested variables... (cached) yes
checking for g++... g++
checking whether the C++ compiler works... yes
checking for C++ compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking for style of include used by make... GNU
checking dependency style of g++... gcc3
checking for g++... g++
checking whether we are using the GNU Objective C++ compiler... no
checking whether g++ accepts -g... no
checking dependency style of g++... gcc3
checking how to print strings... printf
checking for gcc... gcc
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking dependency style of gcc... gcc3
checking for a sed that does not truncate output... /bin/sed
checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /bin/grep -E
checking for fgrep... /bin/grep -F
checking for ld used by gcc... /usr/bin/ld
checking if the linker (/usr/bin/ld) is GNU ld... yes
checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm -B
checking the name lister (/usr/bin/nm -B) interface... BSD nm
checking whether ln -s works... yes
checking the maximum length of command line arguments... 1572864
checking whether the shell understands some XSI constructs... yes
checking whether the shell understands "+="... yes
checking how to convert x86_64-unknown-linux-gnu file names to x86_64-unknown-linux-gnu format... func_convert_file_noop
checking how to convert x86_64-unknown-linux-gnu file names to toolchain format... func_convert_file_noop
checking for /usr/bin/ld option to reload object files... -r
checking for objdump... objdump
checking how to recognize dependent libraries... pass_all
checking for dlltool... no
checking how to associate runtime and link libraries... printf %s\n
checking for ar... ar
checking for archiver @FILE support... @
checking for strip... strip
checking for ranlib... ranlib
checking command to parse /usr/bin/nm -B output from gcc object... ok
checking for sysroot... no
checking for mt... no
checking if : is a manifest tool... no
checking how to run the C preprocessor... gcc -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking for dlfcn.h... yes
checking for objdir... .libs
checking if gcc supports -fno-rtti -fno-exceptions... no
checking for gcc option to produce PIC... -fPIC -DPIC
checking if gcc PIC flag -fPIC -DPIC works... yes
checking if gcc static flag -static works... no
checking if gcc supports -c -o file.o... yes
checking if gcc supports -c -o file.o... (cached) yes
checking whether the gcc linker (/usr/bin/ld -m elf_x86_64) supports shared libraries... yes
checking whether -lc should be explicitly linked in... no
checking dynamic linker characteristics... GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... yes
checking how to run the C++ preprocessor... g++ -E
checking for ld used by g++... /usr/bin/ld -m elf_x86_64
checking if the linker (/usr/bin/ld -m elf_x86_64) is GNU ld... yes
checking whether the g++ linker (/usr/bin/ld -m elf_x86_64) supports shared libraries... yes
checking for g++ option to produce PIC... -fPIC -DPIC
checking if g++ PIC flag -fPIC -DPIC works... yes
checking if g++ static flag -static works... no
checking if g++ supports -c -o file.o... yes
checking if g++ supports -c -o file.o... (cached) yes
checking whether the g++ linker (/usr/bin/ld -m elf_x86_64) supports shared libraries... yes
checking dynamic linker characteristics... (cached) GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
checking for ar... /usr/bin/ar
checking for ranlib... /usr/bin/ranlib
checking for strip... /usr/bin/strip
checking for gcov... /usr/bin/gcov
checking for lcov... no
checking for java... /usr/bin/java
checking for python... /usr/bin/python
checking for genhtml... no
checking for git... /usr/bin/git
checking for ccache... no
checking for xgettext... no
checking for hexdump... /usr/bin/hexdump
checking for readelf... /usr/bin/readelf
checking for c++filt... /usr/bin/c++filt
checking for pkg-config... /usr/bin/pkg-config
checking pkg-config is at least version 0.9.0... yes
checking whether byte ordering is bigendian... no
checking if compiler needs -Werror to reject unknown flags... no
checking for the pthreads library -lpthreads... no
checking whether pthreads work without any flags... no
checking whether pthreads work with -Kthread... no
checking whether pthreads work with -kthread... no
checking for the pthreads library -llthread... no
checking whether pthreads work with -pthread... yes
checking for joinable pthread attribute... PTHREAD_CREATE_JOINABLE
checking if more special flags are required for pthreads... no
checking for PTHREAD_PRIO_INHERIT... yes
checking for special C compiler options needed for large files... no
checking for _FILE_OFFSET_BITS value needed for large files... no
checking whether strerror_r is declared... yes
checking for strerror_r... yes
checking whether strerror_r returns char *... yes
checking whether the linker accepts -Wl,--large-address-aware... no
checking for __attribute__((visibility))... yes
checking for __attribute__((dllexport))... no
checking for __attribute__((dllimport))... no
checking for library containing clock_gettime... none required
checking whether C++ compiler accepts -fPIC... yes
checking whether C++ compiler accepts -Wstack-protector... yes
checking whether C++ compiler accepts -fstack-protector-all... yes
checking whether C++ preprocessor accepts -D_FORTIFY_SOURCE=2... yes
checking whether C++ preprocessor accepts -U_FORTIFY_SOURCE... yes
checking whether the linker accepts -Wl,--dynamicbase... no
checking whether the linker accepts -Wl,--nxcompat... no
checking whether the linker accepts -Wl,-z,relro... yes
checking whether the linker accepts -Wl,-z,now... yes
checking whether C++ compiler accepts -fPIE... yes
checking whether the linker accepts -pie... yes
checking endian.h usability... yes
checking endian.h presence... yes
checking for endian.h... yes
checking sys/endian.h usability... no
checking sys/endian.h presence... no
checking for sys/endian.h... no
checking byteswap.h usability... yes
checking byteswap.h presence... yes
checking for byteswap.h... yes
checking stdio.h usability... yes
checking stdio.h presence... yes
checking for stdio.h... yes
checking for stdlib.h... (cached) yes
checking for unistd.h... (cached) yes
checking for strings.h... (cached) yes
checking for sys/types.h... (cached) yes
checking for sys/stat.h... (cached) yes
checking sys/select.h usability... yes
checking sys/select.h presence... yes
checking for sys/select.h... yes
checking sys/prctl.h usability... yes
checking sys/prctl.h presence... yes
checking for sys/prctl.h... yes
checking for library containing getaddrinfo_a... -lanl
checking for library containing inet_pton... none required
checking whether strnlen is declared... yes
checking whether le16toh is declared... yes
checking whether le32toh is declared... yes
checking whether le64toh is declared... yes
checking whether htole16 is declared... yes
checking whether htole32 is declared... yes
checking whether htole64 is declared... yes
checking whether be16toh is declared... yes
checking whether be32toh is declared... yes
checking whether be64toh is declared... yes
checking whether htobe16 is declared... yes
checking whether htobe32 is declared... yes
checking whether htobe64 is declared... yes
checking whether bswap_16 is declared... yes
checking whether bswap_32 is declared... yes
checking whether bswap_64 is declared... yes
checking for MSG_NOSIGNAL... yes
checking for visibility attribute... yes
checking for Berkeley DB C++ headers... /usr/include/db4/
checking for main in -ldb_cxx-4.8... yes
checking miniupnpc/miniwget.h usability... no
checking miniupnpc/miniwget.h presence... no
checking for miniupnpc/miniwget.h... no
checking miniupnpc/miniupnpc.h usability... no
checking miniupnpc/miniupnpc.h presence... no
checking for miniupnpc/miniupnpc.h... no
checking miniupnpc/upnpcommands.h usability... no
checking miniupnpc/upnpcommands.h presence... no
checking for miniupnpc/upnpcommands.h... no
checking miniupnpc/upnperrors.h usability... no
checking miniupnpc/upnperrors.h presence... no
checking for miniupnpc/upnperrors.h... no
checking for QT... no
checking for QT... no
configure: WARNING: Qt dependencies not found; bitcoin-qt frontend will not be built
checking whether to build Bitcoin Classic GUI... no (Qt5)
checking for boostlib >= 1.20.0... yes
checking whether the Boost::System library is available... yes
checking for exit in -lboost_system... yes
checking whether the Boost::Filesystem library is available... yes
checking for exit in -lboost_filesystem... yes
checking whether the Boost::Program_Options library is available... yes
checking for exit in -lboost_program_options-mt... yes
checking whether the Boost::Thread library is available... yes
checking for exit in -lboost_thread... yes
checking whether the Boost::Chrono library is available... yes
checking for exit in -lboost_chrono-mt... yes
checking whether the Boost::Unit_Test_Framework library is available... yes
checking for dynamic linked boost test... yes
checking for SSL... yes
checking for CRYPTO... yes
checking for EVENT... yes
checking for EVENT_PTHREADS... yes
checking for ZMQ... no
configure: WARNING: libzmq version 4.x or greater not found, disabling
checking openssl/ec.h usability... yes
checking openssl/ec.h presence... yes
checking for openssl/ec.h... yes
checking whether to build bitcoind... yes
checking whether to build utils (bitcoin-cli bitcoin-tx)... yes
checking whether to build libraries... yes
checking if ccache should be used... no
checking if wallet should be enabled... yes
checking whether to build with support for UPnP... no
checking whether to build test_bitcoin... yes
checking whether to reduce exports... no
checking that generated files are newer than configure... done
configure: creating ./config.status
config.status: creating libbitcoinconsensus.pc
config.status: creating Makefile
config.status: creating src/Makefile
config.status: creating share/setup.nsi
config.status: creating share/qt/Info.plist
config.status: creating src/test/buildenv.py
config.status: creating qa/pull-tester/run-bitcoind-for-test.sh
config.status: creating qa/pull-tester/tests_config.py
config.status: creating qa/pull-tester/rpc-tests.py
config.status: creating src/config/bitcoin-config.h
config.status: executing depfiles commands
config.status: executing libtool commands
=== configuring in src/secp256k1 (/usr/src/bitcoinclassic/src/secp256k1)
configure: running /bin/sh ./configure --disable-option-checking '--prefix=/usr/local'  '--disable-shared' '--with-pic' '--with-bignum=no' '--enable-module-recovery' --cache-file=/dev/null --srcdir=.
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking how to print strings... printf
checking for style of include used by make... GNU
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking dependency style of gcc... gcc3
checking for a sed that does not truncate output... /bin/sed
checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /bin/grep -E
checking for fgrep... /bin/grep -F
checking for ld used by gcc... /usr/bin/ld
checking if the linker (/usr/bin/ld) is GNU ld... yes
checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm -B
checking the name lister (/usr/bin/nm -B) interface... BSD nm
checking whether ln -s works... yes
checking the maximum length of command line arguments... 1572864
checking whether the shell understands some XSI constructs... yes
checking whether the shell understands "+="... yes
checking how to convert x86_64-unknown-linux-gnu file names to x86_64-unknown-linux-gnu format... func_convert_file_noop
checking how to convert x86_64-unknown-linux-gnu file names to toolchain format... func_convert_file_noop
checking for /usr/bin/ld option to reload object files... -r
checking for objdump... objdump
checking how to recognize dependent libraries... pass_all
checking for dlltool... no
checking how to associate runtime and link libraries... printf %s\n
checking for ar... ar
checking for archiver @FILE support... @
checking for strip... strip
checking for ranlib... ranlib
checking command to parse /usr/bin/nm -B output from gcc object... ok
checking for sysroot... no
checking for mt... no
checking if : is a manifest tool... no
checking how to run the C preprocessor... gcc -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking for dlfcn.h... yes
checking for objdir... .libs
checking if gcc supports -fno-rtti -fno-exceptions... no
checking for gcc option to produce PIC... -fPIC -DPIC
checking if gcc PIC flag -fPIC -DPIC works... yes
checking if gcc static flag -static works... no
checking if gcc supports -c -o file.o... yes
checking if gcc supports -c -o file.o... (cached) yes
checking whether the gcc linker (/usr/bin/ld -m elf_x86_64) supports shared libraries... yes
checking dynamic linker characteristics... GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... no
checking whether to build static libraries... yes
checking whether make supports nested variables... (cached) yes
checking for pkg-config... /usr/bin/pkg-config
checking pkg-config is at least version 0.9.0... yes
checking for ar... /usr/bin/ar
checking for ranlib... /usr/bin/ranlib
checking for strip... /usr/bin/strip
checking for gcc... gcc
checking whether we are using the GNU C compiler... (cached) yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... (cached) none needed
checking dependency style of gcc... (cached) gcc3
checking how to run the C preprocessor... gcc -E
checking whether gcc and cc understand -c and -o together... yes
checking for gcc option to accept ISO C89... (cached) none needed
checking if gcc supports -std=c89 -pedantic -Wall -Wextra -Wcast-align -Wnested-externs -Wshadow -Wstrict-prototypes -Wno-unused-function -Wno-long-long -Wno-overlength-strings... yes
checking if gcc supports -fvisibility=hidden... yes
checking for __int128... yes
checking for __builtin_expect... yes
checking for x86_64 assembly availability... yes
checking for CRYPTO... yes
checking for main in -lcrypto... yes
checking for EC functions in libcrypto... yes
checking whether byte ordering is bigendian... no
configure: Using assembly optimizations: x86_64
configure: Using field implementation: 64bit
configure: Using bignum implementation: no
configure: Using scalar implementation: 64bit
configure: Using endomorphism optimizations: no
configure: Building ECDH module: no
configure: Building Schnorr signatures module: no
configure: Building ECDSA pubkey recovery module: yes
checking that generated files are newer than configure... done
configure: creating ./config.status
config.status: creating Makefile
config.status: creating libsecp256k1.pc
config.status: creating src/libsecp256k1-config.h
config.status: executing depfiles commands
config.status: executing libtool commands
=== configuring in src/univalue (/usr/src/bitcoinclassic/src/univalue)
configure: running /bin/sh ./configure --disable-option-checking '--prefix=/usr/local'  '--disable-shared' '--with-pic' '--with-bignum=no' '--enable-module-recovery' --cache-file=/dev/null --srcdir=.
checking whether make supports nested variables... yes
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
checking how to print strings... printf
checking for style of include used by make... GNU
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking dependency style of gcc... gcc3
checking for a sed that does not truncate output... /bin/sed
checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /bin/grep -E
checking for fgrep... /bin/grep -F
checking for ld used by gcc... /usr/bin/ld
checking if the linker (/usr/bin/ld) is GNU ld... yes
checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm -B
checking the name lister (/usr/bin/nm -B) interface... BSD nm
checking whether ln -s works... yes
checking the maximum length of command line arguments... 1572864
checking whether the shell understands some XSI constructs... yes
checking whether the shell understands "+="... yes
checking how to convert x86_64-unknown-linux-gnu file names to x86_64-unknown-linux-gnu format... func_convert_file_noop
checking how to convert x86_64-unknown-linux-gnu file names to toolchain format... func_convert_file_noop
checking for /usr/bin/ld option to reload object files... -r
checking for objdump... objdump
checking how to recognize dependent libraries... pass_all
checking for dlltool... no
checking how to associate runtime and link libraries... printf %s\n
checking for ar... ar
checking for archiver @FILE support... @
checking for strip... strip
checking for ranlib... ranlib
checking command to parse /usr/bin/nm -B output from gcc object... ok
checking for sysroot... no
checking for mt... no
checking if : is a manifest tool... no
checking how to run the C preprocessor... gcc -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking for dlfcn.h... yes
checking for objdir... .libs
checking if gcc supports -fno-rtti -fno-exceptions... no
checking for gcc option to produce PIC... -fPIC -DPIC
checking if gcc PIC flag -fPIC -DPIC works... yes
checking if gcc static flag -static works... no
checking if gcc supports -c -o file.o... yes
checking if gcc supports -c -o file.o... (cached) yes
checking whether the gcc linker (/usr/bin/ld -m elf_x86_64) supports shared libraries... yes
checking dynamic linker characteristics... GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... no
checking whether to build static libraries... yes
checking for g++... g++
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking dependency style of g++... gcc3
checking how to run the C++ preprocessor... g++ -E
checking for ld used by g++... /usr/bin/ld -m elf_x86_64
checking if the linker (/usr/bin/ld -m elf_x86_64) is GNU ld... yes
checking whether the g++ linker (/usr/bin/ld -m elf_x86_64) supports shared libraries... yes
checking for g++ option to produce PIC... -fPIC -DPIC
checking if g++ PIC flag -fPIC -DPIC works... yes
checking if g++ static flag -static works... no
checking if g++ supports -c -o file.o... yes
checking if g++ supports -c -o file.o... (cached) yes
checking whether the g++ linker (/usr/bin/ld -m elf_x86_64) supports shared libraries... yes
checking dynamic linker characteristics... (cached) GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
checking that generated files are newer than configure... done
configure: creating ./config.status
config.status: creating Makefile
config.status: creating pc/libunivalue.pc
config.status: creating pc/libunivalue-uninstalled.pc
config.status: creating univalue-config.h
config.status: executing depfiles commands
config.status: executing libtool commands
Fixing libtool for -rpath problems.
$


- Make:


sudo make


(At this point taking a coffee is advised)


- Install:


sudo make install



- Run:

This time in our folder and with our user (no sudo).


cd

nohup bitcoind -externalip=`wget --quiet -O- http://169.254.169.254/latest/meta-data/public-ipv4` &

head -50 .bitcoin/debug.log


Notes:
-externalip is used to tell bitcoind which Public IP to advertise on the Bitcoin network. This is extremely important when running a full-node in EC2.
- To obtain the Public IP of our node we use a standard EC2 Meta-Data API call. It can be used as shown on this example. No adjustments needed. You can learn more about EC2 Meta-Data in here.



2016-04-13 13:31:36 Bitcoin version v0.12.0.0-84d82a8 (2016-04-06 12:21:13 +0100)
2016-04-13 13:31:36 InitParameterInteraction: parameter interaction: -externalip set -> setting -discover=0
2016-04-13 13:31:36 InitParameterInteraction: parameter interaction: -whitelistforcerelay=1 -> setting -whitelistrelay=1
2016-04-13 13:31:36 Using OpenSSL version OpenSSL 1.0.1k-fips 8 Jan 2015
2016-04-13 13:31:36 Using BerkeleyDB version Berkeley DB 4.8.30: (February 21, 2011)
2016-04-13 13:31:36 Default data directory /home/ec2-user/.bitcoin
2016-04-13 13:31:36 Using data directory /home/ec2-user/.bitcoin
2016-04-13 13:31:36 Using config file /home/ec2-user/.bitcoin/bitcoin.conf
2016-04-13 13:31:36 Using at most 125 connections (1024 file descriptors available)
2016-04-13 13:31:36 Using 4 threads for script verification
2016-04-13 13:31:36 scheduler thread start
2016-04-13 13:31:36 HTTP: creating work queue of depth 16
2016-04-13 13:31:36 No rpcpassword set - using random cookie authentication
2016-04-13 13:31:36 Generated RPC authentication cookie /home/ec2-user/.bitcoin/.cookie
2016-04-13 13:31:36 HTTP: starting 4 worker threads
2016-04-13 13:31:36 Using wallet wallet.dat
2016-04-13 13:31:36 init message: Verifying wallet...
2016-04-13 13:31:36 CDBEnv::Open: LogDir=/home/ec2-user/.bitcoin/database ErrorFile=/home/ec2-user/.bitcoin/db.log
2016-04-13 13:31:36 Bound to [::]:8333
2016-04-13 13:31:36 Bound to 0.0.0.0:8333
2016-04-13 13:31:36 Cache configuration:
2016-04-13 13:31:36 * Using 2.0MiB for block index database
2016-04-13 13:31:36 * Using 32.5MiB for chain state database
2016-04-13 13:31:36 * Using 65.5MiB for in-memory UTXO set
2016-04-13 13:31:36 init message: Loading block index...
2016-04-13 13:31:36 Opening LevelDB in /home/ec2-user/.bitcoin/blocks/index
2016-04-13 13:31:36 Opened LevelDB successfully
2016-04-13 13:31:36 Using obfuscation key for /home/ec2-user/.bitcoin/blocks/index: 0000000000000000
2016-04-13 13:31:36 Opening LevelDB in /home/ec2-user/.bitcoin/chainstate
2016-04-13 13:31:36 Opened LevelDB successfully
2016-04-13 13:31:36 Using obfuscation key for /home/ec2-user/.bitcoin/chainstate: 0000000000000000
...


Reference: https://github.com/bitcoinclassic/bitcoinclassic/blob/develop/doc/build-unix.md