Process Identifier (PID)

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Apache Failure on Centos 7 not starting

hellau everyone, i have a problem, that i cant resolve alone, so i need your help. i have installed on a centos 7 apache when im asking for the status of the service (systemctl status httpd) so i ...
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24 views

Outputting PID of Rails server(s) with ps aux | grep - breaks when put into an alias? [migrated]

I'm trying to create an alias for an unwieldy command I'm using to output the PID and some other information about two rails servers I have running. When I simply run the command in terminal (over ...
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30 views

RamMap shows millions of processes that Task manager doesn't

I have a server 2008 box with 32GB RAM on and i have been investigating why it runs out of memory every 150 ish days. Task manager shows that we are running at 99% memory usage but all the processes ...
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1answer
940 views

Could not access pid file for elasticsearch

I am not a die-hard linux engineer, but I am having some problems with starting Elastic Search. Some stats: Server: Ubuntu Server 11.04 Elastic Search: 1.2.3 (installed with appitude) When I start ...
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4answers
10k views

What's a proper way of checking if a PID is running?

I have a .pid file, and I need to check if the process is running. So far I found two options kill -0 `cat something.pid` which prints out an error if the pid isn't running. I know this can be ...
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8answers
25k views

Port 80 is being used by SYSTEM (PID 4), what is that?

I am trying to use port 80 for my application server, but when I perform "netstat -aon" I get TCP 0.0.0.0:80 0.0.0.0:0 LISTENING 4 When I look up the process in ...
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0answers
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When is a pid needed in log rotation?

I've read that providing pid in the newsyslog.conf is to ensure that the process writes in the new log file. However, I've tried log rotation without providing a pid because I couldn't find one for ...
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1answer
46 views

Ubuntu: Postfix and Cyrus expecting saslauthd PID file in different locations

I'm running postfix and cyrus in parallel on my server, as far as I understand this is a quite common think to do. Both daemons use sasl authorization. However, postfix is looking for the saslauthd ...
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3answers
25 views

Log pid than cpu higher than a value

I'm looking for a way to log the pid of process higher than a fixed value of cpu (ex 40%). I tried with command like this : ps -eo pcpu,pid,user,args | sort -k 1,2 -r | head -10 But, first, it sorts ...
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28 views

Where to create an AF_LOCAL/AF_UNIX socket file when not allowed to write in /var/run?

FSH says that socket and pid files should go to /var/run However, for security purpose, only root can creates file and subdirectories in this location. A common solution is creating a subdirectory ...
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3answers
2k views

Given a PID on Windows - how do I find the command line instruction that executed it?

On a database, I can get a list of all the currently running processes, and the sql command that kicked them off. I'd like to do a similar thing on a windows box. I can get the list of processes, ...
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5answers
26k views

The PID of a bash child proccess (imapsync) - how do you get it?

Can any one tell me how to get the PID of a command executed in bash. E.g. I have a bash script that runs imapsync. When the script is killed the imapsync process does not always get killed, so I'd ...
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5answers
6k views

Are .pid files reliable for determining whether a process is running?

Many programs such as sshd create .pid files in /var/run/ that contain their process ID. Are these files reliable for determining whether a process is running? My guess is that these files are ...
8
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1answer
15k views

Init script does not create a PID file

I need to create an init script for an IRC logger. I copied /etc/init.d/skeleton. I filled in the configuration section to fit my needs and I also had to add --background to the start daemon command ...
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5answers
199 views

Get the pid if 2 tomcat(s) is running

I have 2 tomcat's running, how do I get the pid if both have similar names? ps -ef | grep java root 12952 1 0 10:01 pts/0 00:00:03 /usr/lib/jvm/jre/bin/java ...
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2answers
133 views

Reduce PID_MAX Safely

I have one server in a cluster that was experiencing a process table leak. Because the developer responsible for the code was unavailable for a few days I increased pid_max on the machine as follows: ...
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2answers
677 views

Is it normal for PID's to be over 65535?

I have a managed VPS running on CloudLinux 6.6 x86_64 standard. It has a few websites with MySQL, PHP and Apache running with CPanel. I am working on a PHP system that needs to manage a PID and ...
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2answers
400 views

screen command process id

First of all sorry for my bad english and i am new at linux. When i do this, it can write process id to pid file start () { echo -n "Starting someserver.jar: " java -jar ...
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1answer
54 views

How to get a process ID automaticly with command prompt [closed]

I´d want to know how to get a PID of a process with a single command in command prompt. I tried it with findstr, but I´m (apparently) not so smart to figure it out. You cannot use tasklist, because ...
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1answer
313 views

Pid and Lock files are not created in Nginx custom build Centos 7

I am trying to install nginx from source. After make install, I had a look at /var/run/ folder but I cant find the nginx.pid file and nginx.lock files there. This is my configuration: sudo ...
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2answers
6k views

Can start-stop-daemon use environmental variables?

I need to daemonize a Windows app running in Wine, and create a pid in /var/run. Since it requires an X11 session to run, I need to make sure the $DISPLAY variable is set in the running user's ...
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1answer
361 views

Restarting shell script with &disown using Monit

I have a shell script that runs a C++ backend mail system (PluginHandler). I need to monitor this process in Monit and restart it if it fails. The script: export ...
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1answer
504 views

Weird stuff in server error log?

I have a PHP script that shuts down server processes based on their PIDs. It seems like it works well, however, I found this weird stuff in Apache's error log. Any idea on what it's saying? [Thu Jul ...
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2answers
148 views

Problems with pid files when restoring OpenVZ snapshot

I am trying different ways to take snapshots of running openvz containers. Following this guide : http://openvz.org/Checkpointing_and_live_migration, I always encounter an issue with pid files ...
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5answers
31k views

How to get pid of just started process

I want to start process (eg. myCommand) and get its pid (to allow to kill it later). I tried ps and filter by name, but I can not distinguish process by names myCommand ps ux | awk ...
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Process identifier mask in z/OS

I've noticed a curious pattern to process identifier numbers on the z/OS system I'm working on (uname reports it as OS/390), they're either 1-4 digits long or 8 digits long but never in between. The ...
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3answers
6k views

What is the range of a PID on Linux and Solaris?

What is the maximum and minimum value for a PID (Process ID) on Linux and Solaris?
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1k views

Monit is not restarting process

I have monit to monit a process but it doesn't realize it is down. My monit configuration is this: check process xxx with pidfile /var/run/xxx.pid group yyy start program = "/etc/init.d/xxx start" ...
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1answer
1k views

sh bash script ambiguous redirect pid of file using single quotes

I have the following new line in my .sh file su --session-command='$javaCommandLine & >>$serviceLogFile 2>&1 & echo \$! >$pidFile' $serviceUser || return 1 When I had it ...
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2answers
130 views

How to map an ephemeral port to a pid?

I have a RHEL server with several apps on it and I am attempting to figure out which one of them is making calls to an external web service. I have TCP dumps that show the calls being made and through ...
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0answers
132 views

Upstart shows non-existent process running

I am using upstart 1.8-0ubuntu1 on Ubuntu-1210-quantal-64-minimal. It shows me nginx to be running, when it's not. # service nginx status nginx start/running, process 2543 # ps -p 2543 PID TTY ...
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7k views

Does kill -3 actually terminate a java process? Or just generate a thread dump?

CentOS 5.9 If I run kill -3 <java process pid> what actually happens? As per this red hat article, I understand that a Java Thread Dump is generated but is the process terminated? It doesn't ...
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5k views

how to get process file name from PID in MacOS?

Is it possible to get a file name of a process using PID? ps displays a lot of useful information about a process, but not a hint about a process executable file location.
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2answers
349 views

If I know the PID number of a process can I know its name?

If I have the PID number for a process (on a UNIX machine), how can I know the name of its associated process? What do I have to do?
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3answers
2k views

Identify PID of a transient network connection on HP-UX 11.23

We've tried lsof and tcpdump to capture the PID of a process that is attempting to make connections. Any ideas?
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3answers
3k views

How to kill these PHP process safely?

I have installed php5 in ubuntu and WordPress. It can run after installed. But after few days I've found there are lots of process and occupied a lot of memories. I try to use ps -aux | grep www-data ...
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ulimit -u could be exceeded by some user

Our server is forced to restart sometimes because some users (not all) could start more zombie suphp defunct processes than allowed through the RLIMIT_NPROC / ulimit -u statement. How is that ...
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2answers
425 views

What happens when pid_max is reached

As the title suggests, what happens when pid_max (32bit standard is 32768) is reached with many zombie-processes? On our server a user generates a lot of suphp defunct zombie processes and this ...
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1answer
77 views

Interfacing strace with Process Name instead of PID

How do I implement a wrapper script pstrace in bash that changees the interface of [sudo] strace -c -p [PID] to [sudo] pstrace -c -p [PROCESS-NAME] similar to how killall [PROCESS-NAME] is ...
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5answers
27k views

what permission to write PID file in /var/run

Ubuntu touch: cannot touch `/var/run/test.pid': Permission denied I am starting start-stop-daemon and like to write the PID file in /var/run start-stop-daemon is run as my-program-user /var/run ...
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1answer
582 views

Looking for way to log process terminations on OS X (Mac)

I'm looking for a way to log all process terminations on my Mac (OS X 10.6.8). (And see pid, timestamp, process name) I've implemented something similar for HP-UX, but it required a kernel-level ...
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1answer
23 views

dead parents tree for debugging

$ ps UID PID PPID C STIME TTY TIME CMD il 17626 1 0 14:02 ? 00:00:00 /bin/bash /usr/bin/xdg-open file:///media/distrpart/Downloads/utorrent/test.png I want to ...
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1answer
9k views

MySQL server quit without updating PID file

I need help on how to start the mysql server. The problem arise when the root directory was full. To be able to login to directadmin and start mysql, I added a soft link of the /var/lib/mysql/ to ...
2
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1answer
714 views

Can I recover a nano process from a previous terminal?

My system crashed while I was in a nano session with unsaved changes. When I log back in via SSH I see the nano process still running when I do a ps. davidparks21@devdb1:/opt/frugg_batch$ ps -ef | ...
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1k views

nscd dead but subsys locked

service nsd status nscd dead but subsys locked It starts fine but eventually crashes... server: logfile: "/var/log/nsd.log" pidfile: "/var/run/nsd/nsd.pid" What randomly causes NSD to do this? ...
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4answers
2k views

Apache process consumes too much CPU

I have an ubuntu apache/php server running php doing appx 100 hits/sec and a PHP cron running in the background. I get occasionally high CPU load on one of the Apache processes which stays high ...
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1answer
86 views

failure daemon and changing pid number

proftpd, sshd and apache processes run with /etc/init.d/its-script on linux distro. I was monitoring 21, 22 and 80 ports with farm monitoring service: every 5 minutes service check each port and ...
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319 views

Windows Server 2008 R2 Troubleshooting PID Leaking

One of our servers has been leaking PID like crazy. I wrote a simple scheduled script, and it seems that every day the highest PID increases by approx. 300'000. E.g., if on Aug.24 00:00 the highest ...
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1answer
14k views

How to find the .pid file for a given process

I'm setting up monit and want to monitor a given python application. Monit does this by looking at the .pid files for processes, but I don't know where this would be. I also tried creating my own ...
3
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1answer
318 views

AIX: is it somehow possible to get a ForeignAddress/PID pair like we are able to get in Linux with netstat?

In Linux (RHEL), we are able to get a ForeignAddress/PID pair with "netstat -ntp" command: [root@rhel ~]# netstat -ntp Active Internet connections (w/o servers) Proto Recv-Q Send-Q Local Address ...