Re: Having two servers and controlling my secondary server with the primary server
On 09.01.23 18:12, Mark Thomas wrote: Your mentor is wrong. Mark To elaborate on that: When one server is down, its configuration will be inactive as well. There's nothing that this non-running server will be able to do for you. You'll need to externalize the decision which server's responses to serve to /some/ external entity Olaf On 09/01/2023 14:56, Manisha Chermadurai wrote: Thanks for this. I have set up the solution for failover using nginx as a proxy server between my two tomcat servers. But my mentor told with only using tomcat server's configuration files, you can redirect the requests to another server if and only if the particular server is down. So I am searching for this solution, and came to know about this group. So I requested about this , may be I will get some ideas. Really thanks for response. On Mon, 9 Jan 2023, 8:21 pm Olaf Kock, wrote: On 09.01.23 15:22, Manisha Chermadurai wrote: Good evening Sir, I am trying to control my secondary server with the primary server of mine. Bothe are of versions 9.0. Primary server has been available in my physical machine and my secondary server is in virtual machine. Both are of windows 10. I am connecting the vm's 8080 port through the ip address from primary machine. It works fine. But I have a doubt like , Can I create my secondary server without allocating port ? I have tried it works fine, but there is no entry point for my server. I have doubt of creating a comnector for my vm's server from my primary server and the condition is also like I have to create a connector for my secondary server and it can be accessible only when my primary server is down. I have researched and tried many things for literally 2 weeks. But I got stuck in this. So, once again I repeat my question, it's I have to create a connector for my secondary server by my primary server and it will be only accessible when my primary server is down.So my client won't get chance to connect my secondary server through the ip and port. I have tried failover with nginx. But I want to try this only with my server.xml file. If I understand your use case correctly, I'd recommend to set up a load balancer that handles the failover. Other options depend on the scenario you're looking for: Should your secondary server be a hot-backup for the primary one (e.g. immediate failover with no downtime?) or a cold backup that get started only when some component determines that the primary server went down? You will need to configure a Connector (with a port) on both servers if you want to be able to access them. And I'd recommend to either use some orchestration for it, or just manually configure your second server. Tomcat itself is not the tool of choice to configure one server through another one. There are components that allow you to distribute deployed web applications (e.g. https://tomcat.apache.org/tomcat-9.0-doc/config/cluster-deployer.html), but that's a different use case than what you're asking for. If you absolutely want to work around a load balancer, you might be able to do some trickery with firewall-level redirection, but I'd say that this is less transparent than explicitly configuring a load balancer. Olaf - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Having two servers and controlling my secondary server with the primary server
Your mentor is wrong. Mark On 09/01/2023 14:56, Manisha Chermadurai wrote: Thanks for this. I have set up the solution for failover using nginx as a proxy server between my two tomcat servers. But my mentor told with only using tomcat server's configuration files, you can redirect the requests to another server if and only if the particular server is down. So I am searching for this solution, and came to know about this group. So I requested about this , may be I will get some ideas. Really thanks for response. On Mon, 9 Jan 2023, 8:21 pm Olaf Kock, wrote: On 09.01.23 15:22, Manisha Chermadurai wrote: Good evening Sir, I am trying to control my secondary server with the primary server of mine. Bothe are of versions 9.0. Primary server has been available in my physical machine and my secondary server is in virtual machine. Both are of windows 10. I am connecting the vm's 8080 port through the ip address from primary machine. It works fine. But I have a doubt like , Can I create my secondary server without allocating port ? I have tried it works fine, but there is no entry point for my server. I have doubt of creating a comnector for my vm's server from my primary server and the condition is also like I have to create a connector for my secondary server and it can be accessible only when my primary server is down. I have researched and tried many things for literally 2 weeks. But I got stuck in this. So, once again I repeat my question, it's I have to create a connector for my secondary server by my primary server and it will be only accessible when my primary server is down.So my client won't get chance to connect my secondary server through the ip and port. I have tried failover with nginx. But I want to try this only with my server.xml file. If I understand your use case correctly, I'd recommend to set up a load balancer that handles the failover. Other options depend on the scenario you're looking for: Should your secondary server be a hot-backup for the primary one (e.g. immediate failover with no downtime?) or a cold backup that get started only when some component determines that the primary server went down? You will need to configure a Connector (with a port) on both servers if you want to be able to access them. And I'd recommend to either use some orchestration for it, or just manually configure your second server. Tomcat itself is not the tool of choice to configure one server through another one. There are components that allow you to distribute deployed web applications (e.g. https://tomcat.apache.org/tomcat-9.0-doc/config/cluster-deployer.html), but that's a different use case than what you're asking for. If you absolutely want to work around a load balancer, you might be able to do some trickery with firewall-level redirection, but I'd say that this is less transparent than explicitly configuring a load balancer. Olaf - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Having two servers and controlling my secondary server with the primary server
Thanks for this. I have set up the solution for failover using nginx as a proxy server between my two tomcat servers. But my mentor told with only using tomcat server's configuration files, you can redirect the requests to another server if and only if the particular server is down. So I am searching for this solution, and came to know about this group. So I requested about this , may be I will get some ideas. Really thanks for response. On Mon, 9 Jan 2023, 8:21 pm Olaf Kock, wrote: > On 09.01.23 15:22, Manisha Chermadurai wrote: > > Good evening Sir, > > > > > > I am trying to control my secondary server with the primary server of > mine. > > Bothe are of versions 9.0. Primary server has been available in my > physical > > machine and my secondary server is in virtual machine. Both are of > windows > > 10. I am connecting the vm's 8080 port through the ip address from > primary > > machine. It works fine. But I have a doubt like , Can I create my > secondary > > server without allocating port ? I have tried it works fine, but there is > > no entry point for my server. I have doubt of creating a comnector for my > > vm's server from my primary server and the condition is also like I have > to > > create a connector for my secondary server and it can be accessible only > > when my primary server is down. I have researched and tried many things > for > > literally 2 weeks. But I got stuck in this. So, once again I repeat my > > question, it's I have to create a connector for my secondary server by > my > > primary server and it will be only accessible when my primary server is > > down.So my client won't get chance to connect my secondary server through > > the ip and port. I have tried failover with nginx. But I want to try this > > only with my server.xml file. > > If I understand your use case correctly, I'd recommend to set up a load > balancer that handles the failover. > > Other options depend on the scenario you're looking for: Should your > secondary server be a hot-backup for the primary one (e.g. immediate > failover with no downtime?) or a cold backup that get started only when > some component determines that the primary server went down? > > You will need to configure a Connector (with a port) on both servers if > you want to be able to access them. > > And I'd recommend to either use some orchestration for it, or just > manually configure your second server. Tomcat itself is not the tool of > choice to configure one server through another one. There are components > that allow you to distribute deployed web applications (e.g. > https://tomcat.apache.org/tomcat-9.0-doc/config/cluster-deployer.html), > but that's a different use case than what you're asking for. > > If you absolutely want to work around a load balancer, you might be able > to do some trickery with firewall-level redirection, but I'd say that > this is less transparent than explicitly configuring a load balancer. > > Olaf > > > > > > > - > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > >
Re: Having two servers and controlling my secondary server with the primary server
On 09.01.23 15:22, Manisha Chermadurai wrote: Good evening Sir, I am trying to control my secondary server with the primary server of mine. Bothe are of versions 9.0. Primary server has been available in my physical machine and my secondary server is in virtual machine. Both are of windows 10. I am connecting the vm's 8080 port through the ip address from primary machine. It works fine. But I have a doubt like , Can I create my secondary server without allocating port ? I have tried it works fine, but there is no entry point for my server. I have doubt of creating a comnector for my vm's server from my primary server and the condition is also like I have to create a connector for my secondary server and it can be accessible only when my primary server is down. I have researched and tried many things for literally 2 weeks. But I got stuck in this. So, once again I repeat my question, it's I have to create a connector for my secondary server by my primary server and it will be only accessible when my primary server is down.So my client won't get chance to connect my secondary server through the ip and port. I have tried failover with nginx. But I want to try this only with my server.xml file. If I understand your use case correctly, I'd recommend to set up a load balancer that handles the failover. Other options depend on the scenario you're looking for: Should your secondary server be a hot-backup for the primary one (e.g. immediate failover with no downtime?) or a cold backup that get started only when some component determines that the primary server went down? You will need to configure a Connector (with a port) on both servers if you want to be able to access them. And I'd recommend to either use some orchestration for it, or just manually configure your second server. Tomcat itself is not the tool of choice to configure one server through another one. There are components that allow you to distribute deployed web applications (e.g. https://tomcat.apache.org/tomcat-9.0-doc/config/cluster-deployer.html), but that's a different use case than what you're asking for. If you absolutely want to work around a load balancer, you might be able to do some trickery with firewall-level redirection, but I'd say that this is less transparent than explicitly configuring a load balancer. Olaf - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Having two servers and controlling my secondary server with the primary server
Good evening Sir, I am trying to control my secondary server with the primary server of mine. Bothe are of versions 9.0. Primary server has been available in my physical machine and my secondary server is in virtual machine. Both are of windows 10. I am connecting the vm's 8080 port through the ip address from primary machine. It works fine. But I have a doubt like , Can I create my secondary server without allocating port ? I have tried it works fine, but there is no entry point for my server. I have doubt of creating a comnector for my vm's server from my primary server and the condition is also like I have to create a connector for my secondary server and it can be accessible only when my primary server is down. I have researched and tried many things for literally 2 weeks. But I got stuck in this. So, once again I repeat my question, it's I have to create a connector for my secondary server by my primary server and it will be only accessible when my primary server is down.So my client won't get chance to connect my secondary server through the ip and port. I have tried failover with nginx. But I want to try this only with my server.xml file. Kindly help me with this question. Thank You for your support
