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Questions tagged [ipvs]

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Requests to ipvsadm server hang in state SYN_RECV, direct requests to real server OK

I have IPVS configured as: $ ipvsadm --save -A -t localhost:<port> -s rr -a -t localhost:<port> -r <other_hostname>:<port> -m -w 1 It seems to be running: $ ipvsadm IP ...
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1answer
176 views

IPVS traffic doesn't seem to go through netfilter on the director node

I have the following setup on a director node running keepalived: native IP 10.65.5.72 VIP 10.65.5.230 keepalived DR mode enabled for port 80 and 443 I was debugging a problem where I couldn't ...
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60 views

Keepalived_vrrp issue

Configuration debian version 9.7 architecture ppc64 Issue I am running keepalived and i am encountering an issue with IPVS, here are the logs : Feb 16 17:02:35 srv Keepalived_vrrp[10109]: IPVS: ...
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130 views

Docker UDP 'response'

Simply put, I have 2 containers for a service in a swarm mode. Container receives udp packets and sends them back to multiple clients, which ip's and ports are stored in db. Load-balancing: packets ...
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0answers
452 views

Keepalived forwarding UDP traffic to one node via NAT

I am having issues with load balancing UDP Syslog to my Graylog cluster nodes. At first everything seemed to work normal but it seems that traffic is flowing for 99% to one of the two nodes. I have ...
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1answer
651 views

How do I list Docker VIP addresses?

I can list all container IP address inside a docker overlay network using: ~# docker network inspect <network_id> I'm trying to do resolver troubleshooting in some Docker swarm stack. It seems ...
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1answer
2k views

Publish Docker Swarm services on specific IP addresses

On Centos 7.4 I am setting up a swarm where I want to run multiple routers all reachable on port 80/443. The purpose is to host multiple environment (test/staging...) on a single swarm, all ...
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2answers
619 views

ipvs status and netns?

Is the IPVS effort dead? I can't find docs newer than 2011, and most docs are ca. 2004. It does some interesting things, and I'd like to figure out how to make it work across netns. Specificallty, ...
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1answer
54 views

50% of requests failing to one host

I've encountered a weird bug and ran out of ways to troubleshoot it. I've set up 3 virtual machines: LVS, RS1 and RS2. RS1 and RS2 are running a simple php website. RS2 is an exact copy of RS1 with ...
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1k views

LVS + keepalived for load balancing transparent SQUID proxies

I need to load balance a number of SQUID proxies configured in transparent mode. Below is a simple diagram with one LB and SQUID boxes. ---------- | Client | ...
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1answer
4k views

Setting up a LVS on CentOS

I have a 3 node(dedicated servers from a provider) CentOS 7.x cluster. I am trying to set up LVS using the link here. Each of my machines already has 3 extra alias IP addresses assigned to it. I want ...
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1answer
1k views

Load balancing Bind9 with Keepalived and LVS

How can I correctly configure LVS to masqerade/NAT packets from virtual ip to/from clients? Currently I have: UDP 10.47.1.80:domain rr -> 10.47.1.51:domain Masq 10 0 ...
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1answer
1k views

LVS + HA Proxy for L4 to L7 load balancing

Currently we are using HA proxy for our load balancing needs. We are planning to integrate LVS with HA proxy to create a load balancing solution that can take care of L4 to L7 load balancing and HA. ...
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1answer
4k views

Keepalived sync daemon

I've enabled lvs_sync_daemon_interface option however it looks like sync daemon is not working Active node: [MASTER:~]# ipvsadm -Lnc IPVS connection entries pro expire state source ...
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1answer
555 views

Monitoring Linux Kernel Space Processing

I'm running two "services" that are served in linux kernel-space: Linux Netfilter Firewall ("iptables") Linux Virtual Server Loadbalancer ("IPVS", "LVS") Now I want to (performance-)monitor my "...