Linux Development – Page 3

/lib/ld-linux.so.2: bad ELF interpreter: No such file or directory

1. ready to install oracle 10g on OracleLinux 7.

2. runInstaller, hit failed: /lib/ld-linux.so.2

bash-4.2$ ./runInstaller
./runInstaller: /tmp/10201/database/install/.oui: 
/lib/ld-linux.so.2: bad ELF interpreter: No such file or directory

bash-4.2$ ./runInstaller

./runInstaller: /tmp/10201/database/install/.oui:

/lib/ld-linux.so.2: bad ELF interpreter: No such file or directory

3. solution:

# yum install /lib/ld-linux.so.2

it’s outside the scope of:


oracle-rdbms-server-11gR2-preinstall-1.0-4.el7.x86_64.rpm	14-Oct-2015 06:24	18.9 K
oracle-rdbms-server-12cR1-preinstall-1.0-4.el7.x86_64.rpm	14-Oct-2015 06:18	17.7 K

copy pyenv installation onto other nodes

the step Im working on copying pyenv installation.

1. zip -r /tmp/my.pyenv.zip ~/.pyenv/
2. scp /tmp/my.pyenv.zip new:/tmp/
3. new# unzip /tmp/my.pyenv.zip -d ~/

1. zip -r /tmp/my.pyenv.zip ~/.pyenv/

2. scp /tmp/my.pyenv.zip new:/tmp/

3. new# unzip /tmp/my.pyenv.zip -d ~/

seems it’s simple, after setting env. it failed.

export PYENV_ROOT="$HOME/.pyenv"
export PATH="$PYENV_ROOT/bin:$PATH"

eval "$(pyenv init -)"

export PYENV_ROOT="$HOME/.pyenv"

export PATH="$PYENV_ROOT/bin:$PATH"

eval "$(pyenv init -)"

the problem is :

# pyenv init -
pyenv: no such command `init'

1 2	# pyenv init - pyenv: no such command `init'

well after checking, it was the problem that ~/.pyenv/libexec was not in the $PATH.

comparing the src and dest env.:

# ls -altr ~/.pyenv/bin/
total 12
-rwxr-xr-x. 1 root root 731 Dec 28 09:16 python-local-exec
lrwxrwxrwx. 1 root root 16 Dec 28 11:04 pyenv -&gt; ../libexec/pyenv
drwxr-xr-x. 12 root root 4096 Mar 29 08:54 ..
drwxr-xr-x. 2 root root 4096 Mar 29 09:45 .

# ls -altr ~/.pyenv/bin/
total 12
-rwxr-xr-x 1 root root 731 Dec 28 09:16 python-local-exec
drwxr-xr-x 12 root root 4096 Mar 29 09:02 ..
lrwxrwxrwx 1 root root 2695 Dec 28 09:16 pyenv
drwxr-xr-x 2 root root 4096 Mar 29 09:44 .

# ls -altr ~/.pyenv/bin/

total 12

-rwxr-xr-x. 1 root root 731 Dec 28 09:16 python-local-exec

lrwxrwxrwx. 1 root root 16 Dec 28 11:04 pyenv -> ../libexec/pyenv

drwxr-xr-x. 12 root root 4096 Mar 29 08:54 ..

drwxr-xr-x. 2 root root 4096 Mar 29 09:45 .

# ls -altr ~/.pyenv/bin/

total 12

-rwxr-xr-x 1 root root 731 Dec 28 09:16 python-local-exec

drwxr-xr-x 12 root root 4096 Mar 29 09:02 ..

lrwxrwxrwx 1 root root 2695 Dec 28 09:16 pyenv

drwxr-xr-x 2 root root 4096 Mar 29 09:44 .

the problem is that pyenv is now a binary, not sym.link instead.

FIX:
1. using zip -y or –symlinks option on backup.
2. or after unzip, remove pyenv binary under ~/.pyenv/bin/, install sym-link.

avahi-daemon[532]: SO_REUSEPORT failed: Protocol not available

scenario:

hit message error on os messages:

Mar 26 22:07:47 EL7 avahi-daemon[532]: SO_REUSEPORT failed: Protocol not available
Mar 26 22:07:47 EL7 avahi-daemon[532]: Failed to create server: No suitable network protocol available

1 2	Mar 26 22:07:47 EL7 avahi-daemon[532]: SO_REUSEPORT failed: Protocol not available Mar 26 22:07:47 EL7 avahi-daemon[532]: Failed to create server: No suitable network protocol available

service avahi failed to start.

My environment:
Oracle Linux 7 with UEK, 3.8.13-35.3.1.el7uek.x86_64

1 2	My environment: Oracle Linux 7 with UEK, 3.8.13-35.3.1.el7uek.x86_64

the problem is that SO_REUSEPORT is involved in linux kernel 3.9, while EK7 uses linux 3.10+. but oracle uek kernel not yet.

w/r:

$vi /etc/avahi/avahi-daemon.conf
disallow-other-stacks=yes

1 2	$vi /etc/avahi/avahi-daemon.conf disallow-other-stacks=yes

Reference:

Bug 484212 – net-dns/avahi-0.6.31-r2 with kernel <3.9 – avahi-daemon[3239]: SO_REUSEPORT failed: Protocol not available

Socket options SO_REUSEADDR and SO_REUSEPORT, how do they differ? Do they mean the same across all major operating systems?

WARNING : /lib64/libgudev-1.0.so.0: undefined symbol: g_type_class_adjust_private_offset

This is a scenario on xfce desktop crash after update some packages.

Error details:

Mar 25 00:09:18 EL7 gnome-session: ** (gnome-settings-daemon:1097): WARNING **: 
   /lib64/libgudev-1.0.so.0: undefined symbol: g_type_class_adjust_private_offset

1 2	Mar 25 00:09:18 EL7 gnome-session: (gnome-settings-daemon:1097): WARNING : /lib64/libgudev-1.0.so.0: undefined symbol: g_type_class_adjust_private_offset

Fix:

About libgudev, it’s a latest update on package: systemd/libgudev

systemd-libs-219-19.0.2.el7_2.4.x86_64
systemd-sysv-219-19.0.2.el7_2.4.x86_64
systemd-219-19.0.2.el7_2.4.x86_64
libgudev1-219-19.0.2.el7_2.4.x86_64

systemd-libs-219-19.0.2.el7_2.4.x86_64

systemd-sysv-219-19.0.2.el7_2.4.x86_64

systemd-219-19.0.2.el7_2.4.x86_64

libgudev1-219-19.0.2.el7_2.4.x86_64

bash-4.2$ ldd /lib64/libgudev-1.0.so.0| grep glib
    libglib-2.0.so.0 => /lib64/libglib-2.0.so.0 (0x00007ff99e57e000)
bash-4.2$ rpm -qf  /lib64/libglib-2.0.so.0
glib2-2.36.3-5.el7.x86_64

bash-4.2$ ldd /lib64/libgudev-1.0.so.0| grep glib

libglib-2.0.so.0 => /lib64/libglib-2.0.so.0 (0x00007ff99e57e000)

bash-4.2$ rpm -qf /lib64/libglib-2.0.so.0

glib2-2.36.3-5.el7.x86_64

check oracle yum website:

glib2-2.36.3-5.el7.x86_64.rpm	14-May-2014 00:58	2.1 M
glib2-2.40.0-4.el7.x86_64.rpm	26-Dec-2014 03:17	2.2 M
glib2-2.42.2-5.el7.x86_64.rpm	21-Nov-2015 16:00	2.2 M

My glib2 package version is outdated .

Fix:
1. download the latest glib2-2.42.2
2. switch the terminal or recovery mode.
3. update glib2 package.
4. reboot to graphic mode.

firefox 39+ cannot access SSLv3 sites

Well, as described in
firefox_39_completely_breaks_older_sslv3_pages

I cannot access sslv3 sites on error: SSL_ERROR_UNSUPPORTED_VERSION

alternative… using Firefox38… …………

firefox-38.3.0-2.el7.centos.x86_64

set about:config to :

security.tls.version.fallback-limit     0
security.tls.version.min                0

1 2	security.tls.version.fallback-limit 0 security.tls.version.min 0