Shell script to check if server is up or not. If you add -IL, then you can get the final status.

Shell script to check if server is up or not But between the stop and start of the service, it should wait ~10 seconds and check if the service is really stopped. I am using Ubuntu 14. Then Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company pkill node sleep 1 node server. Or just a print on screen with status : alive or not alive should be ok. #!/bin/bash echo "shell script called" if pgrep mongo > /dev/null then echo "MongoDB Running" else echo "Stopped . If you are still prompted for a password after going through all the steps, start by editing file permissions on the remote server. Troubleshooting, if found any errors. If running go to step 2; If not restart d service; Make entry in /etc/sudoers of remote machine. Looking for shell script examples to learn and master Bash? Here are 30+ of the best shell script examples, with images to enhance the content and make it more visually appealing. You can also check if eth0 up and configured correct using "ifconfig" command. x. My script was put in crontab having time gap of 1 minute. @echo off : Shell Script to Check if Website is Down Programatically. You can get the PID of your shell script using the built-in $$ variable. Basically, I am copying files down from remote servers and I want to do something else if it doesn't exist. Bash script to check the network status - linux. Sign up or log in I have a java jar program that I am trying to run on startup of my machine. Asking for help, clarification, or responding to other answers. – As far as I understand this check only on the local server the script is running on. Hot Network Questions \fpeval{} versus \pgfmathsetmacro{} --- How do I define variables in tikz using newer capabilities No, this way it will only check if the command is still running. i am new in shell scripting please help . For example. ShellCheck If you paste a script in the editor above, this window will show shellcheck output. csh . The -q option suppresses any output written to the screen, so if you want to run this interactively at a command prompt you may with to exclude the -q so something gets displayed immediately. I see many shell scripts to check process if that is running we proceed further. it's checking against a list of websites and sends email (to list of emails) whenever something wrong (http response different from 200). From WMIC: Check this script. If you check the log with tail and grep, in worst case scenario, you could detect an old start which ended with a crash. To receive an alert when the server is down, I I have been asked to write a shell script To check if a URL is UP/Working or not for my Project. com . Create a script IsTheServerUp. myserver. In my school, the Internet is not available (every night after 23:00 the school will kill the Internet connection, to put us to bed >. The cronjob will be checking the remote server for a live (or not) mysql every minute. If it finished (either way) the while loop will end and the next restart will happen. These examples cover a wide range of topics, from basic shell scripting concepts to more advanced techniques. But I have run into some problem. Can we do this using CURL? Any suggestions what can be used besides CURL. The == is a non-portable hack invented by shell authors to mess up the minds of young programmers. A bash shell program to wait for all servers in a list to start, then run startup scripts. It seems that a command like: cd subdir # works via interactive bash; not in script run via sh. ; Make sure there is a / A Linux / UNIX Shell Script To Monitor Services Such As Web / Http, This script sendmail at services is UP, and not if one of services is DOWN! :D. The problem is that if is the first time I’m connecting to the server, the server asks the classic question “The authenticity of host ‘x. dropDatabase()" BUT, if the mongod server is not running, I get: MongoDB shell version: 2. But there are a few back them up with references or personal experience. Previous script: I want to make a shell script that firstly checks the status of services from list of services saved in a text file on multiple systems and then send an alert mail after execution ends. Hot Network Questions Also of note: the \\n (escaped backslash) is only required if you're using bash as your shell interactively, but if you put this in a script OR you use tcsh you should use \n instead. To learn more, Get status of service on a remote server. 4 connecting to: testd Your grep command fails, and myApp isn't found in the path you give. Hi, Can anyone please tell me how to write a shell script to check whether a process if running or not. However, (i. When I run the curl command solo it works fine and shows no data if Tomcat isweb is running. txt present in my ~ folder). If that works then DB is up. I want to run this on the server with Apatche Tomcat. Cron tab would have executed executed four times which means four mails are being fired. PowerShell: A family of Microsoft task automation and configuration management frameworks consisting of a command-line shell and associated scripting language. Commented Nov 8, 2011 at 18:56. If ICMP is blocked from the server-side or This does not show the final request status if the result of the first request is a 3XX. like sudo echo "ABC" >> /etc/sudoers; Make an entry in local file of local machine (in which i am executing script) of what has been done in script. Normally wget prints lots of info telling its progress in bash script: to check if Apache server is up and running. The script as written in the question works fine, except for the case where $1 is empty. To get ping to test your connectivity, you'll want to give it a run count (-c) and a response timeout (-W), and then check its return code: #!/bin/bash while true do if ping -c 1 -W 5 Using Test-WSMan, and a runspace pool, you could have your script rebooting multiple computers at the same time, and either wait for them all to come online before doing your IISRESET (should this be a web cluster for the same set of You said "I want to check if tomcat server is really started up". – Bob. But pg_isready is a utility for checking the connection status of a PostgreSQL database server. To learn more, see our tips on writing systemctl has an is-active subcommand for this:. Some versions of nc will hang when you try this, because they do not close the sending half of their socket even after receiving the end-of-file I think you can check if your needed database working in simple manner in any shell. In case of kubernetes deployment, and if you want to make sure that mongodb is ready before you start the application, based on your snippet, I added in my application deployment yaml : initContainers: - name: check-mongo-ready image: busybox:1. Most of us prefer to use the ping command, which performs a basic test to determine if a remote host is available, but it does not check whether the web server is But it is not running, If i search for the process using this command: ps x |grep -v grep |grep -c CCcam, I get 0 so I know the process is not running. – I am looking for a simple shell (+curl) check that would evaluate as true or false if an URL exists (returns 200) I needed this for a script to check whether a remote URL exists, to update programs automatically. if its still running then wait for sometime and if not then run the next query. You should use top command with some specific options. sh #!/bin/bash if ps aux | grep -o "sample. Here's a more robust solution for scripting, using a shell function: getscript() { pgrep -lf ". Creating a shell script to check network connectivity. 7, but it takes a lot longer to run the shell script if I use it all the time. I want to write a script that will scrape the passwords from the database, and use those passwords to attempt an (ssh) login to each server every night, and send an email with the results to the team. json, exists, wiped half a build-server clean. txt and only will throw a "failed" result if, let's say 3 of 5 failed. If I can it is ok, but if the Powershell script output is an error, then I want to use my second SMTP server to notify that the first SMTP server failed to send email. I want to make a shell script that keeps running to check if my two light weight web servers are still running, and restart them if one is not. Add a comment | Your Answer Shell Script to Check if Website is Down Programatically. For a more professional tool, you can use Nagios. Few options which I have thought are, Write a shell script in App server which connects to DB. EXPECTED OUTPUT Checking if table <my_table> exists Table exists Table is empty COUPLE The answers above work correctly only for specific Java versions (usually for the ones before Java 9 or for the ones after Java 8. This made scripts using == suddenly non-portable and ill-behaved on conformant shells (of which there were many, and some still are around). I need assistance on this. To me is not working my tomcat is up, I can see the pid by "ps -ef | grep tomcat", One way to check by using Background : I need to receive an alert when my server is down. The only thing I can think of is by grabbing the contents of the website and seeing if it is up or not. So you should check if tomcat server is listening on that port. The links are present in a simple text file (say URL. I tried to find some hints over the internet, How to implement retry mechanism while executing the server url in the shell script? 1. I want the answer to return 0 to the shell if the user is logged in and 1 to the shell if the user is not logged in. g. Note that grep -w matches alphanumeric, digits and the underscore, which is Some check the IP address if the interface is up BUT it does not check for internet connectivity. i have found many snippets of checking if a single site is up but nothing for a list of sites. txt” file, wherein it will ping and if the server is alive it will write output to CSV file “Host Name” and “Up / Down”. Example : What I'm thinking of is writing a Shell script that would check via netstat if there's a process running on port 9999, and if there's none, the script would trigger the PHP socket server to go online again. example. The response after a check if up or down is not important. bash; Write a script to check if the server is up ; Log(echo) the outcome to the file ; Use curl command to check the server ; Use rules above to write your bash Use curl to request a webpage from a server ; Provide the --output/dev/null option + argument to suppress output. I fixed this and everything started to work! I am looking for a good approach to check if Oracle Database is up and running from Unix server. priv" and exit the script. 0 and with systemd services/timers, cron jobs and manually running /usr/bin/php in the cli they all return a value of 'cli'. 0. com, [email protected], [email protected]. EDIT: which can be used to fail your script if docker isn't running, like so: #!/usr/bin/env bash if ! docker info > /dev/null 2>&1; then echo "This script uses docker, and it isn't running - please start docker and try again!" exit 1 fi I would like to incorporate a way to check if a site has loaded inside Tomcat when I run my startup script and have it tell me when Tomcat has fully started. To learn more, see our tips on writing great answers. Windows Server 2012+ or Windows Server 2008 R2 with the Windows Management Framework 4. bash script: to check if Apache server is up and running. @nulltron The Standard is the Opengroup's UNIX specification and in that grammar only = is the comparison operator for test. -q means quiet. I have 100 servers. txt that is telling the script to echo failed if it does. Check return status ($?) If status 0(success) If not (0) error message Question : Is there any way (i prefer bash script) to detect when my server is down or offline and sends an alert message (Email + SMS)? If you have a separate server to run your check script on, something like this would do a simple Ping test to see if the server is alive: NOTIFYEMAIL=test@example. Here is one for Linux using only awk, reading uptime info from /proc/uptime. – Mike Q. ready=$(oc get pods | awk '{print $2}' | t I want to setup a script which will connect to a linux server and then stop/start a service. Then, you can just search for that PID to know if the process is done or not. So, I just want to add one line of code which gives me back the current server where it is running. Nothing guarantees that the user with ID 0 is called root. Right now the only native way I know of is ping, perhaps integrated into a script as described here. Add a comment | You should use/write a script that will connect to the server and see if your database is online. 0 update), (Using Power-Shell script) 0. temp file is deleted when the website is working again. I need to make a script to check authentication of an user with ssh-key on multiple Redhat servers, approximately 980 servers. 15-klk my platform architecture is armv7l GNU/Linux I am trying to check if my process is running or not : I tried this: #!/bin/sh service= I ended up using. Ask Question Asked 6 years, You do not need to check the contents of the page it asked for. Till the time 1st script is sleeping for next five minutes. How to check if the connection to the database was successful? 48. You can run it from a shell script independently of Nagios itself: $ check_http --ssl -H www. – Jens ip a | grep -Eq ': eth0:. This is a quoting issue; the command line works the same in both shells, interactively and in scripts if you use single quotes instead, à la: '%{http_code}\n' Probably best for consistency to use that I'd like to write a shell script which checks if a certain file, archived_sensor_data. From the first server, i want to check if ssh connection from this first server to other servers is OK or not. 5 (WAS) installed on Linux RedHat 6. Instead I'd like something like this: node_process = $(pidof node) if [not_exists node_process]; then node server. Follow asked Jun 29, 2014 at 15:04. 43. Failed case: If it is not up restart the script. Before actually creating the keys for future use. The script creates a . And if they are down I will need to send a message stating the url's are down and not active. there is absolutely no guarantee that something will clean up this pid file, so this "solution" is definetely unreliable. I am trying to run the following shell script which is supposed to check if a string is neither space nor empty. 04 and I am a Linux newbie. I want to check if I can send email. Here how it should look like: IF 'java' process is not running THEN run . Powershell script to check if service is started, if not then start it. I have tried two ways. systemctl is-active --quiet service && echo Service is running If you omit --quiet it will also output the current status to its standard output. com 80 < /dev/null The return value of nc will be success if the TCP port was opened, and failure (typically the return code 1) if it could not make the TCP connection. For example if the returned value is a 301 redirect, then this script just stops there. Ideally, the shells script will check every 60 seconds to assure that the jar is running. sh" >/dev/null then echo "Already script running" exit 0 fi echo "start script" while true do echo "script running" sleep 5 done In above script i want to check if this script previously running or not if running then not run it again. ; The variable should be quoted in the grep command, in case the name has a space. chkconfig <service> only returns true if the service is configured to run in the current runlevel (according to the man page I have here). If the ssh connection attempt hangs for some reason, for say longer than 2 minutes, then force exit the script (not sure if this is possible to do, if not, then it doesn't have to be there) Thank you kindly for your advice. Some units can be active even though nothing is How to check if SMTP server is working or not. This script is working fine but the problem is it is sending the mail individually for each host ,suppose number of unreachable server is more ( in three digit ) . Values. Also, Under my one main script main. txt="that holds the list of services" I am trying to write a shell script to check database connectivity. I am brand new at this, so please be kind :) Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Here is the shell script that I am using to check MongoDB's status. back them up with references or personal experience. It (3 Replies) Making statements based on opinion; back them up with references or personal experience. No need to write any script to check the apache status. man proc: /proc/uptime This file contains two numbers: the uptime of the system (seconds), and the amount of time spent in idle process (seconds). I have been trying with differnt scripts from WMIC and Powershell. I use a quick test of a reliable server on a port you can expect to be open: 9 commands to check if connected to internet with shell script examples | GoLinuxCloud. Provide details and share your research! But avoid . That is, when I use: ping -q -w1 -c1 8. <), Then the ping will never stop, though I have used the parameter ping -w1 . However, ps -A checks for ALL PROCESSES. If it does not reply with a response back then I want it to continously check for it. sh file: Hello, I work with 4 flavour of UNIX ( AIX, IRIX, HPUX and SUN). The exit status specifies the result of the connection check. com -r 'Feeling Lucky' HTTP OK: I need to check my connection to a spesific port every 5 minutes, currently i can't use ping command, so i need other alternative to do this. (Interestingly, without the --spider flag, Using Curl in a Bash script to check if a site is up. csh #!/bin/csh while !( -e $1 ) sleep 10m end ctrl+D here -e is for working with files, $1 is a shell variable, sleep for 10 minutes. ; Set permissions 640 for the . It'll optionally take a port number, for example to verify if a given port is open. To record the PID, put at the top of your script: echo $$ > /var/run/myscript. check status of syslog. This Shell script would then be called by Cron every 1 or 2 minutes to check if the PHP socket is running. something like I wound up using variable-variables to loop through an easily managed HEREDOC list of variable Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company First of all httpd is not available in ubuntu. my1stdomain. I have an array below, but I tried to reference it directly, but it is still returning false. com Of course tester. So I want to check for that version, and if it's 1. Else run the nice fast version. Bash Script to loop through list to I have an IBM WebSphere Application Server v8. ShellCheck is an open source static analysis tool that automatically finds bugs in your shell scripts. I have a problem maintaing the system. 31 command: ['sh', '-c', 'until nc -z {{ . To learn more, Shell script to write an sqlquery to veriy if the database is up on the remote server. But, not able to generate with clear and clean. For example, to check to see if group 'postgres' exists, and create it if it does not (assuming bash shell, running as a user able to create new groups) run: /usr/bin/getent group postgres 2>&1 > /dev/null || /usr/sbin/groupadd postgres I'm trying to setup another block of code to a bash script to check if a public website on HTTPS is up or not. Using Curl in a Bash script to check if a site is up. You can easily verify it this way: Ping is one of the most widely used commands to check whether a server or remote host is up and responding. If you want to show all HTTP statuses for all requests, use my example below. I want to execute this command in shell script Here is my code, I have fixed a abc. I'm new in Shellscript, and i'm getting some problems. ; Edit file permissions using this command: You have to end a fi at the end of the instance, @Akki: then echo "Server is up"; fi – fedorqui. Checking for a running program with the same name pidof xyz This will print the pids of every program named "xyz", and return with exit code 0 if a pid was found and 1 if not (so if you just want to know if the program is running, you just have to check the exit code of that command). I did some setup before with hostname and key pair, so basically i just enter: ssh name-server Then i would know the result. Set permissions 700 for the . The server is temporarily overloading or down. How do I check if the jar is running on centos, this does not appear to be working? My current . We use the argument a as the short form for address and that should be enough to get a listing of all I am a novice with shell scripting and have written some minor shell scripts to copy files and such that. However, I am getting the same output for all the 3 mentioned strings. ssh/authorized_keys directory. txt="that holds ip of different systems" 2)Services. You have various ways of checking if a program is running. Now I have a requirement to write a shell script to go check if Tomcat running in the same server is up or not, if not then run the Tomcat startup script. I'm planning to create a job to check the DB connection in particular intervals and send alert mail. However, there is a problem in the script related to redirection of stderr. Although the two forms &> and >& exist, in your case you want to use >&. something if multiple variable are set or not, if set then only execute the script code, otherwise exit. mongo testdb --eval "db. Here the Oracle guys will help. we use nginx and and hence why i has grep the output for "http 302 found" I want to check if I do have enough space before executing my script. bashrc or . PowerShell script to find if a Machine is Online or Offline If you are looking for the Kafka cluster broker status, you can use zookeeper cli to find the details for each broker as given below: ls /brokers/ids returns the list of active brokers IDs on the cluster. Since ping always prints something for both success and failure, it never prints an empty string, so the script always does echo 1. But I also need the current server name, as some operations need to be done based on current server. In a bash script, you have several ways to check if the running user is root. Commented Apr 21, 2017 at 20:13. Commented Jul 8, 2013 at 9:05. 0. You can use the exit value in your shell scripts as follows: systemctl -q is-active nginx && echo "It I'm trying to create a short script to check whether or not websites are up. – I have to check the status of 200 http URLs and find out which of these are broken links. Script must: check successful login or failed(if asked for password) and output into log file; read servers IP's/hostnames from servers. – Jens. will work as expected in my interactive login shell, bash, even when CDPATH is set. com is just example but if I manually type that ssh command with my real remote server address it does work. My problem is that the remote machines are not very reliable, and they are not always up. look it up on Google. If it is, then do nothing, other start the server. ShellCheck is GPLv3: free as in freedom; # bash SCRIPT_NAME TABLE_TO_CHECK bash my_script my_table where SCRIPT_NAME( my_script) is the name of the file holding the above script content and TABLE_TO_CHECK( my_table) is the name of the table that you want to check for. For ubuntu apache2 is available. Next script: Shell script to restart MySQL server if it is killed or not working. Any assistance would be appreciated. If you add -IL, then you can get the final status. At the beginning of your shell script, write the PID to a file (for example, in /var/run). The problem is, I did something wrong and now in any scenarios my output always shows the "URLs are up" FYi. 8. By writing a script in PowerShell, I'd like to determine whether a Windows service is running or not running. I am able to scrape the database for login information, but I'm not sure how to check whether ssh login was successful or not in expect. But the check is important. To learn more, exit shell script from subshell if files are not present on remote server or disk is full? 1. I want to check remote servers from a single location. I am trying to write a shell script which will check if the backup was successful or not from the following output to send the alert via mail: Server standby: PostgreSQL: OK is_superuser: If a website is unreachable, our script should distinguish whether the remote host is offline or the Internet connection is absent. *state UP' || _do_your_thing So here we grep the ubiquitous ip tool's stdout for a line which contains both our interface of interest and the phrase "state UP" ( thanks to @Lekensteyn for pointing out the need for a little more specificity than just UP). Then connect to Weblogic Admin Server Just a heads up: ps -a only lists processes of the user in the current terminal. sh I have to run 2 scripts simutaneously which take some time to (2 Replies) If there is no active connection detected, then connect by executing "ssh [email protected]-i key. If ping works then DB is up. JenkinsFile how to query if Get a virtual cloud desktop with the Linux distro that you want in less than five minutes with Shells! With over 10 pre-installed distros to choose from, the worry-free installation life is here! Whether you are a digital nomad or just looking for flexibility, Shells can put your Linux machine on the device that you want to use. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I am sshing into a server in a shell script and running some docker commands. js & fi The problem is the not_exists method doesn't seem to exist :). Say I have local server S and remote server R1,Rn. The env FLOCKER="$0" flock -en "$0" "$0" "$@" command is responsible for acquiring the lock and executing the script. In my case, the solution was to log the output of the crontab script: * * * * * /script/path/script. checkmongo. My question: how can I check on the following by command (if exist): Is the application server running or not? Is the web application that deployed on it running or not? The database connectivity (using datasource) is connected successfully or not? I have written a script to check if our three URLs are up. Ask Question Asked 8 years, 9 months ago. You try to invoke it from the shell script and it hangs as a result. From ubuntu terminal run this command to get the status: sudo service apache2 status Output will be: A > if apache is running: Apache2 is running Name or service not known name tester. Windows Server: A family of Microsoft server operating systems that support enterprise-level management, data storage, applications, and communications. starting MongoDB" sudo service mongodb start fi Actually I cannot reproduce the problem. Ping Tool to check if server is online. I need a script to check if the services are running or not, if its not running, and dont exist the flag, start all services. I think you may have over-complicated your code: If you are just checking to see if a service is running and, if not, run it and then stop re-evaluating, the following should suffice: pgrep will exit with 0, which is success when it's an exit status, if it finds something, or 1 if it does not find any matching processes. Write a shell script in App server which pings the DB. I have bare minimum knowledge There is no reason to use grep, sed and awk. google. Basically I have: SMTPserver= mail. ssh directory. Is there any other factors that I should take into account that might be fooling the check script into thinking CCcam is running? Having below sample script sample. For more information check man top. ; You must not have spaces around the = sign when you assign a variable (this causes your grep to fail). i want see list of down hosts in one email ,could you help me to modify the script . grep -w matches whole words, and so won't match if you are searching for temp in this scenario. Here's the complete A shell script that checks if the nginx service is running, with action. Example: while true; do if ! /usr/bin/pg_isready &>/dev/null; then echo 'alert'; fi; sleep 3; done; This will check the status of postgresql database every 3 seconds and echos "alert" if it is down. – karlphillip. 1. I have a CSV file with urls and foreach of them I want to just check if they are alive. 8080). I want to find out the servers which are running without activated or with Grace period. So I've really no idea why this won't work as a script. 1. For example: "ifconfig eth0 | grep RUNNING" – Denis. If anyone can help me out that would be amazing. Michael Michael If one do not want to use any monitoring tool, then set up an email configurtion in Ubuntu server using mailutils package. However some of the commands fail in docker version 1. PowerShell - Code I need to create a SSH BASH script (on Debian linux) to test if 'java' process is running. sh >> /log/path/log. If you want verify if a Web server is up and running, make a script to verify if exist a PID or process named with "apache" - Considering that you have web server Apache - this will show you not only if the machine is up and running but also if the webservice is working. docker info to check with a bash script if docker engine is running. Here is the code I tired writing, please correct me or suggest: The following script will help u to go to a process if that script exist in a specified variable, cat > waitfor. shell script to Start/Stop tomcat server. . Also, but it will actually be consumed by the shell as a redirection operator Check if mysql server is up and running. I have done a lot of searching and I can't seem to find out how to do this using a shell script. User can edit script for userID and private ssh-key location. u can execute the script by . I am starting with the below script: The script is saying connection failed because you have an else statement echo "failed" >> log. You could possibly do a while read loop that parses that file log. PowerShell Script - Check Server’s Status This script will test servers listed in “ServersList. Write a script to check if the server is up ; Log(echo) the outcome to the file ; Use curl command to check the server ; Use rules above to write your bash Use curl to request a webpage from a server ; Provide the --output/dev/null option + argument to suppress output. [ /]$1( |\$)" } Example use: Run the wget command; the -O option tells where to put the data that is retrieved /dev/null is a special UNIX file that is always empty. x’ can't be established bla bla bla” Then I have to respond yes or not and it losses the purpose of making it a script, is there any way to bypass that so I can add it to the script? Also I need to check/get the exit status of a remote command executed on remote host through script and send out an email when process/processes is/are not running on any/all server(s). Ideally, it would be able to work with both hostnames and IP addresses. I can use the the command pgrep -f thin to get an array (?) of pids of my server called thin. This is menu driven one stop shell script in which you can check the firewall,apache or any other webservices ,you can start or stop the services just by choosing the option in below script. Commented Sep 25, 2017 at 9:50. I can write the cron job myself, but i need help with the shell script that checks if a remote mysql is up or down. the . @msw surely has posted the better solution if you need to handle errors. Below are the scripts tried. As a warning, do not check if a user is root by using the root username. com server my common server where I am saving the file and next time I am retrieving the file from it. Then I put it in a shell-script, ("eval"-ing the command line inside of backticks), like this: Shell script to check whether a server is reachable? 4. 8 to check if the Internet connection is up/down, it will be there without any output and doesn't exit, just like I am using a I want to check, if multiple variable are set or not, if set then only execute the script code, otherwise exit. Bash script to test status of site. chkconfig --list seems to have the desired behaviour here though (at the cost of success and failure output) but may or may not be any better than just checking for the existence of (and executability of) the init script itself. Share. bash_profile or whatever you use for your shell and then call it with validateServerAvailability <hostname>. Thank you. pid Similar to this question here I am trying to monitor if a set of website links are up and running or not responding. dbport }}; do echo waiting for mongodb; sleep 2; In this article, I am going write Powershell script to check if a given computer is up (online) or down (offline) and script to check ping status of set of remote machines (from text file-txt) and export its output to CSV file. log file showed me that I didn't specify python virtual environment and shell script couldn't import some libraries (ImportError: No module named module_name). Improve this question. Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. If everything is alright than you have your answer. like i have to take input from text files 1)Ip. e. I managed to create a script which starts a service remotely. Yep, your usage of top command is incorrect. I have a customised linux version, kernel version is 4. So, if connection is ok exitcode will be 0, and non I am in the process of creating a bash script that would log into the remote machines and create private and public keys. mysql -uUSERNAME -pPASSWORD DATABASE -e exit and then check $? for exit code. Your script is not giving output because ping never terminates. Ping sends ICMP ECHO_REQUEST to the server. sh through a cron job every two minutes. 19. nc my. If OK, then it would ouput OK, if not, it would output Failed. I'm really new to scripting, I tired writing a script that checks the db connection exists or not. sh to test if java process is running, I can make this test: ps -A | grep java This script should run every minute (I guess in a CRON) Regards How to check whether a particular url is woking or not, through linux shell? I tried through elinks, but it shows: Do you mean if the server is up and responding with content? Or if the content itself is valid How do I prompt for Yes/No/Cancel input in a Linux shell script? 2025. Check return status ($?) If status 0 I need to check if Tomcat is running in my system via a shell script. Making statements based on opinion; back them up with references or personal experience. can any one let me know of the software or script that will check the date,time services running or not, perticular machine is up or not and post a mail with all the details. 2. It takes the text output printed by ping and checks if it is an empty string. If ftp works also it has to send an mail and even if it is fail also it suppose to send the mail. 7 fall back to the slower script. for a more generic solution, checking the exit status: 0 means "exists", non-zero means "does not exist". So the basic task is to figure out if a file exists, and if so, let's delete it. I want to run a script to check if 5 servers are up and running based on a specific service is running. You already redirected stdout, that's why the form &> does not work. A simple strategy is to try pinging a well-known public IP, for instance, Google’s primary DNS With netcat you can check whether a port is open like this:. Check existence of input argument in a Bash I have a shell script to do some mongo db actions: e. 4. /waitfor. i don't think this is best practice to do this. In other words the data is discarded. If that service is running then we know that server is up and accesible. This is what I have so far. bash @StianE no, the OP's command does not check for success/failure. dbhost }} {{ . If FLOCKER is not equal to the script's name ($0), it indicates that the script is not already running, and it attempts to acquire an exclusive lock. If not I need to catch the process id and kill Tomcat. Many years ago some shells started to make == synonymous. I have found the same PowerShell script over the Internet. Script has to execute just 1 times and script suppose to login to ftp and sftp servers using username with password, easy from an extern list. log 2>&1 After that log. This command tries your specific credentials (USERNAME and PASSWORD) to connect to selected DATABASE and exit immediately. Shell script to get current load status of servers and refresh in every 2 minutes. I want to test all remote servers from a single script running on S. Navigate to the following location and press Enter: C:\Oracle\Middleware\Oracle_Home\wlserver\common\bin>wlst. Just execute it from a batch/shell script (see Running Scripts From SQL Command Line) and see it's output. /temp ; echo "the file exits" But even though the website is up, Jenkins pipeline is not able to understand the same and it keeps on running till 15 min and timing out. temp file to "remember" which website(s) failed at last check so you won't get multiple emails. /start. get /brokers/ids/<id> returns the details of the broker with the given ID. cmd . Many Its a shell function, so it would go in . Sample Graph: I'm trying to figure out more ways to see if a given host is up, solely using shell commands (primarily bash). 7. I am trying to create a shell script that will validate that certain pods are ready by checking the READY heading showing 1/1. How to know whether jenkins is up or not using shell script. Problems/fixes in your script: Don't put a space between #! and /bin/sh. I need a bash script that would check if the SSH connection is up. Whether you're a beginner or an experienced Bash user, you're 503 Service Unavailable : The request was not completed. One good solution is to use MRTG (a simple graphing tool for *NIX) with ping-probe script. Tomcat server when is started it is listening to a certain port(e. # Use your favorite mailer here: False positives can occur if the executable itself happens to match, or any arguments that are not script names match - the likelihood is greater with scripts that have no filename extensions. I suggest you use it with -b option which corresponds to the "batch" mode and -n options which is for the number of iterations top produces its output. So this command ps aux | grep [h]ttpd will not work on ubuntu. mongo. Trigger a dummy select statement. systemctl is-active --quiet service will exit with status zero if service is active, non-zero otherwise, making it ideal for scripts:. When the server is down, maybe the Sysload collector will not be able to send any alert. Linux bash script to . (Like 22 for ssh) – I am running my below shell script on a machine on which c++ application server is running on port But suppose if the same app server is down, then it will not be able to execute the URL and then it will print echo "Retrying Again" >&2 # restart the server let RETRY-=1 sleep 30 fi done echo "Server is UP" And here HOSTNAME is the I have tested the php_sapi_name function on Debian 9 with PHP 7. I wrote a simple one liner that will return an integer for Java versions 6 through 11 (and possibly all future versions, until they change it again!). To learn more, I'm trying to write a script that checks if the user (that is sent as an argument) is logged in or not. txt; However, I was running my script in non-interactive mode, as "sh" (not "bash"), where the behavior is a little different. Make Jenkins pipeline wait until server is up. 3. Is there any tool that would be best to do this, aside from writing a shell script and running it as a cron job? tomcat; Share. It's a very strong convention that is broadly followed but anybody could rename the superuser another name. What i'm doing w How to verify if nginx is running or not? ubuntu; nginx; mono; Share. When this returned array has a count of zero I want to run a command which starts both servers: The FLOCKER variable is used to track whether the script is already running. I have a fix for 1. js & Of course, that doesn't check if node is running it simply kills it and starts it up again. Or just try with SQL*Plus client. I'm writing a shell script that basically transfers data files through SFTP to a database server and then invokes a pl/sql procedure which loads the data from those files (external tables) into int @tvCa I find that users generally prefer to be allowed more flexibility in their directory names rather than being forced to make things easier for developers. read this for start. fttr opag hxgaif apt prfob yyt nfnrpw avaslt lnxd kcer