Hi Udara, Tried to wait till it pings the hostname from the script before starting the cassandra with the following line and identified that the hostname is not getting resolved.
while ! ping -c1 $(hostname) &>>/tmp/hostname.log; do echo "IP is not UP" >> /tmp/hostname.log ; sleep 5 ; done And there is no option of appending the hostname into the '/etc/hosts' as it is not supported to the docker container. On Thu, Oct 16, 2014 at 10:10 AM, Udara Liyanage <ud...@wso2.com> wrote: > Hi Vishanth, > > When you ssh into the instance and execute the run script, it works and > when add as a entry point it does not means there may a difference between > the users who execute the script. When you ssh and execute, you execute as > root users. > @Sajith what is the user who execute the script when you add as an entry > point. > > On Thu, Oct 16, 2014 at 8:06 AM, Vishanth Balasubramaniam < > vishan...@wso2.com> wrote: > >> Hi, >> >> There is a problem with starting the cassandra from the Entrypoint at the >> docker file. BUT it totally works fine when I run the script >> (run_scripts.sh) inside the instance (ssh root@10.11.12.2). >> >> The following line is used in the docker file to call the run script at >> Entrypoint >> >> ENTRYPOINT /usr/local/bin/run_scripts.sh | /usr/sbin/sshd -D >> >> >> run_scripts.sh has the following lines of code to execute >> >> #!/bin/bash >> source /root/.bashrc >> /usr/local/bin/metadata_svc_bugfix.sh >> /etc/init.d/apache2 start > /tmp/apache_start.log >> /root/bin/init.sh > /tmp/init.log & >> opt/cassandra/bin/start.sh > /tmp/cassandra_start.log & >> >> >> from the run script I am calling the start.sh to start the cassandra, >> run_script contains the following >> >> #setting up the env variables >> export JAVA_HOME=/opt/java >> export CASSANDRA_HOME=/opt/cassandra >> export PATH=$PATH:/opt/cassandra/bin:/opt/java/bin >> export CASSANDRA_CONF=/opt/cassandra/conf >> export CLASSPATH=/opt/cassandra/lib/*.jar >> >> echo "127.0.0.1 localhost" >> /etc/hosts >> /opt/cassandra/bin/cassandra >> >> >> The cassandra didn't start at the Entrypoint, then I logged the error >> into a file using the following line >> /opt/cassandra/bin/cassandra >> /tmp/cassandra_start.log 2>&1 >> >> Error: Exception thrown by the agent : java.net.MalformedURLException: >> Local host name unknown: java.net.UnknownHostException: >> instance-00000001: instance-00000001 >> >> Then found the fix from the following discussion >> http://stackoverflow.com/questions/7496640/problem-on-starting-cassandra >> >> and modified the script replacing echo "127.0.0.1 localhost" >> >> /etc/hosts with >> echo "127.0.0.1 localhost.localdomain localhost instance-00000001" >> >> /etc/hosts >> >> But unfortunately I am not able to append the 'hosts' file in etc because >> it is a read only file. >> >> Why is it that it is able to start cassandra inside the instance using >> the same script but not from calling the script at entrypoint? >> >> Herewith I have attached all the Dockerfile, Run_scripts.sh and Start.sh. >> >> >> Thank you >> -- >> *Vishanth Balasubramaniam* >> Software Engineer >> WSO2 Inc.; http://wso2.com >> lean.enterprise.middleware >> >> mobile: *+94771737718* >> about me: *http://about.me/vishanth <http://about.me/vishanth>* >> >> > > > -- > > Udara Liyanage > Software Engineer > WSO2, Inc.: http://wso2.com > lean. enterprise. middleware > > web: http://udaraliyanage.wordpress.com > phone: +94 71 443 6897 > -- *Vishanth Balasubramaniam* Software Engineer WSO2 Inc.; http://wso2.com lean.enterprise.middleware mobile: *+94771737718* about me: *http://about.me/vishanth <http://about.me/vishanth>*
