Randomly my logstash is not running although my ES and Kibana are. When I run ./bin/logstash just to check I get
Could not find any executable java binary. Please install java in your PATH or set JAVA_HOME.
Though I checked env
[oracle@localhost logstash-1.5.0]$ env
ORBIT_SOCKETDIR=/tmp/orbit-oracle
HOSTNAME=localhost.localdomain
IMSETTINGS_INTEGRATE_DESKTOP=yes
TERM=xterm
SHELL=/bin/bash
HISTSIZE=1000
XDG_SESSION_COOKIE=8f78dac92e1ebdc1a96653d700000016-1436372602.837307-1570723081
WINDOWID=71303171
OLDPWD=/usr/oracle
QTDIR=/usr/lib64/qt-3.3
QTINC=/usr/lib64/qt-3.3/include
IMSETTINGS_MODULE=none
USER=oracle
LS_COLORS=rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:mi=01;05;37;41:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arj=01;31:*.taz=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.lz=01;31:*.xz=01;31:*.bz2=01;31:*.tbz=01;31:*.tbz2=01;31:*.bz=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.rar=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.axv=01;35:*.anx=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=01;36:*.au=01;36:*.flac=01;36:*.mid=01;36:*.midi=01;36:*.mka=01;36:*.mp3=01;36:*.mpc=01;36:*.ogg=01;36:*.ra=01;36:*.wav=01;36:*.axa=01;36:*.oga=01;36:*.spx=01;36:*.xspf=01;36:
GNOME_KEYRING_SOCKET=/tmp/keyring-OMprgW/socket
USERNAME=oracle
SESSION_MANAGER=local/unix:@/tmp/.ICE-unix/2326,unix/unix:/tmp/.ICE-unix/2326
PATH=/usr/java/jdk1.8.0_25//bin:/usr/lib64/qt-3.3/bin:/usr/java/jdk1.8.0_25//bin:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin:/usr/java/jdk1.8.0_25:/usr/java/jdk1.8.0_25:/usr/java/jdk1.8.0_25/:/usr/java/jdk1.8.0_25
This looked normal and sh -x bin/logstash agent -f logstash-es.conf
[oracle@localhost logstash-1.5.0]$ sh -x bin/logstash agent -f logstash-es.conf
+ unset CDPATH
+++ dirname bin/logstash
++ cd bin/..
++ pwd
+ . /usr/oracle/Desktop/logstash-1.5.0/bin/logstash.lib.sh
++ unset CDPATH
++++ dirname bin/logstash
+++ cd bin/..
+++ pwd
++ LOGSTASH_HOME=/usr/oracle/Desktop/logstash-1.5.0
++ export LOGSTASH_HOME
++ LS_HEAP_SIZE=500m
+ setup
+ '[' '' ']'
+ '[' '' = 1 ']'
+ '[' '' = 1 ']'
+ setup_java
+ '[' -z '' ']'
+ '[' -n /usr/java/jdk1.8.0_25 ']'
+ JAVACMD=/usr/java/jdk1.8.0_25/bin/java
+ '[' '!' -f /usr/java/jdk1.8.0_25/bin/java ']'
++ which /usr/java/jdk1.8.0_25/bin/java
+ JAVACMD=
+ '[' '!' -x '' ']'
+ echo 'Could not find any executable java binary. Please install java in your PATH or set JAVA_HOME.'
Could not find any executable java binary. Please install java in your PATH or set JAVA_HOME.
+ exit 1
And this seemed okay also.
here are some other info from my machine
[oracle@localhost logstash-1.5.0]$ echo $JAVA_HOME
/usr/java/jdk1.8.0_25
[oracle@localhost logstash-1.5.0]$ echo $PATH
/usr/java/jdk1.8.0_25//bin:/usr/lib64/qt-3.3/bin:/usr/java/jdk1.8.0_25//bin:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin:/usr/java/jdk1.8.0_25:/usr/java/jdk1.8.0_25:/usr/java/jdk1.8.0_25/:/usr/java/jdk1.8.0_25
[oracle@localhost logstash-1.5.0]$
After some long research just add export for the javacmd...